NAFFCOInert® Manual - Rev.11

®
NAFFCOInert
INERT GAS EXTINGUISHING SYSTEMS
CONSTANT FLOW TECHNOLOGY
Design, Installation, Operation

and Maintenance Manual for
NAFFCOInert® Systems
200 bar systems

300 bar systems
PART NUMBER 027650015-NF NF-DIOMM-NAFFCOINERT-2015 - 11

All NAFFCOInert® System components are approved and certified compliant with recognized international norms.
Certifications relate to individual products, and are clearly indicated on each respective product page.
NAFFCOInert® System
Record of Revisions
RECORD OF REVISIONS
Design, Installation, Operation and Maintenance Manual for NAFFCOInert® Systems
Initial Release Date...................................................................................................................................................................................................................... May 2015
Revision / Description of Change Revision Date
Revision 01 ......................................................................................................................................................................................................................................June 2015
1. Section 3.1.1 Cylinder mounting parts single row for 67l, 80l and 140 l cylinder - Bracket Dimension for
267mm dia. cylinder & 360mm dia. cylinder included (pages # 27 & 28)
Revision 02 ........................................................................................................................................................................................................................................July 2015
1. Section 3.1 Cylinder - New cylinders dimension added in the technical data table. Model number correction in
cylinder/valve assembly table. (Page # 27)
2. Section 4.3 Selection of cylinders - Agent Filling mass of 67L/300 Bar & 140L/200 bar cylinders added in
Table 4-10. (Page # 53)
3. Section 4.1.1 Limitations - cylinders - Storage floor loading capacity of 67L/300 Bar & 140L/200 Bar added,
Table 4-11, 4-13 (Page # 55)
4. Section 5.4.1 Labels and signs - Name plate model number changed. Table 5.4: Part numbers for cylinders
depending on extinguishing agent updated. (Page # 77 & 78)
Revision 03 ......................................................................................................................................................................................................................................June 2016
1. General - Model Number of all equipment’s updated.
2. General - Change of wording: “valve” replaced by “discharge valve”; “pressure regulator” replaced by “constant
flow and pressure discharge regulator” ;“protection cap” replaced by “safety/shipping cap”
3. General - “LPCB” deleted in the complete manual.
4. Section 1.7 Glossary - technical definitions - New Definition for Storage Quantity & Discharge Time. (Page
#17)
5. Table 2-2 Physical properties of inert gas extinguishing agents (SI Units) - Global Warming Potential
added (Page #23 & #24)
6. Table 2-3 Maximum human exposure time at reduced oxygen levels - Replaced (Page #25)
7. Section 3.2 Cylinder Mounting Parts - Updated rack Assembly Details added (Page #30 to #43)
8. Section 3.11.1 Pressure Relief Devices for Manifold - Added to (Page #58)
9. Section 3.11.2 Pressure and flow detector switch - Design Pressure & Test Pressure Added (Page #58)
10. Section 3.12 Selector valve (for multi-zone distribution) (under UL validation) - Added to Page # 59
11. Section 3.13 Pneumatic control panel (for multi-zone distribution) (under UL validation) - Added to Page
to #59 & #60 with subchapters 3.13.1 to 3.13.5
12. Section 4.2.1 Formula for the calculation of the minimum design quantity - K1 & K2 values corrected
(Page #64)
13. Section 4.4.1 Limitations cylinders - Weight per metre corrected (Page #73)
14. Section 4.4.3.1 Limitations nozzles and location of the nozzles - Revised (Page #75 to #77)
15. Section 4.4.4 Limitations according to UL certification (UL2127) - Limitations due to minimum design
nozzle pressure (Table 4-16 Minimum design nozzle pressure) updated with latest tested values (Page # 78)
16. Section 5.3.2 Pipe supports - Revised with Additional Details (Page # 97 & #98)
17. Section 5.3.6 Earthing of the pipework - Revised with Drawings (Page # 99 & # 100)
18. Section 5.3.8 Electrical clearance - Added (Page #100)
19. Section 5.8 System assembly - Pressure Switch Connection Drawings added (Page #114 & # 115)
20. Section 6.4 NAFFCOInert® System multi-sector distribution - Selector Valve Usage Details, Limitations and
3
Page
other details included (Page # 128 to #133)

21. Section 7.3.2.2 Electromagnetic release device - Added (Page #140)
NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

Record of Revisions
Revision 04 ......................................................................................................................................................................................................................................Aug 2016
1. Section 3.11.3- Added details of Release Circuit Disable Switch
2. Section 3.12, 3.13- Comments on components noted regarding UL Validation.
3. Section 3.13.1- Corrected operating temperature instead of mentioned operating pressure.
4. Section 3.13.6- Added details regarding detection and control panel information.
5. Section 7.3.1.3- Added maintenance information regarding Releasing circuit disable switch.
6. Section 4.2.2- The Design Concentration for IG01, IG100, IG55 & IG541 adjusted as per
NFPA 2001 and UL 2127 (Page # 64 & # 65)
Revision 05 ......................................................................................................................................................................................................................................Dec 2016
1. Section 3.2.2- Mounting details for cylinder rack assembly updated (Page # 33 to # 47)
2. Section 3.10- Nozzle orifice diameter for 1 1/2" updated upto 25.5mm (Page # 61)
3. Section 3.12.1- Selector Valve with Pilot Cylinder assembly for Multi-zone Distribution added (Page # 63)
4. Section 4.2.1- K1 Value updated for IG541 (Page # 69)
5. Section 4.5.1.5- VdS Calculation Software updated for 60 sec discharge time (Page # 100 to # 107)
6. Section 5.4.2- In Warning sings the term"Fire protection system" changed to"NAFFCOInert® fire suppression
system" (Page # 119)
7. Section 5.6.2- Manifold dimensions included for all cylinder capacities (Page # 123)
8. Section 6.4.3.1- Actuation Scenarios included for selector valve with pilot cylinder (Page # 143)
9. Section 3.12.3- Added Pneumatic Control Panel Fixing Details (Page # 65)
Revision 06 ......................................................................................................................................................................................................................................Mar 2017
1. System Temperature Range Upgraded -20oC to 65oC (Page #86, #140, #152 & #115)
Revision 07 ......................................................................................................................................................................................................................................Sep 2017
1. Section 3.1- Added details of cylinder manufacturuing in compliance to IS7285 (Peso) (Page # 30)
2. Section 3.3.1- Added new Constant Flow Pressure Discharge Devices, Part No. B08401000-NF (Page # 50)
3. Section 3.11.4- Added monitoring switch electro mangnetic discharge devices (Page # 64)
4. Section 3.11.5- Added Tamper Switch (Page # 64)
5. Section 3.12.1- Added Pneumatic Panel Actuation sequence (Page # 65)
6. Section 5.4.1- System Label added for Peso approved Cylinders. (Page # 121)
Revision 08 ......................................................................................................................................................................................................................................Jan 201
6
1. Section 3.12.1- Added Selector Valve multizone distribution options (Page #65)
2. Section 3.3- Added B04390031-NF cylinder head valve as option (Page# 50)
3. Section 3.12.3- Added accessories for pneumatic hose and quick connection fittings (Page# 67)
3. Section 6.4.3.1- Added actuaion scenarios for mult-zone system with pilot cylinder (Page# 150)
Revision 08A...................................................................................................................................................................................................................................... May 2020
1. Section 3.12- 4Inch Selector Valve added (Page #65)
Revision 09 ......................................................................................................................................................................................................................................March 2021
1. Section 3.1- Added Details of cylinder manufacturing in accordance to UN ISO 9809-2 (DOT Approved) (Page# 31)
2. Section 3.2.1 & Section 3.2.2 - Added Model Nos and configuration of RACK assembly for UN ISO 9809-2
(DOT) Approved cyllinders (Page# 35 to 50)
3. Section 3.4.3- Updated missing Model Nos of electomagnetic release device (Page# 56)
4. Section 5.4.1- Label details added for UN ISO 9809-2 (DOT) Approved cyllinders (Page# 126 & 128)
5. Appendix- IATA classification added in the MSDS (Page# 171 to194)
Revision 10 ......................................................................................................................................................................................................................................Sep 2021
1. Section 3.10.1 - Added Details of Silent Nozzle - NSN 04613 Series (Page# 65-66)
4
Revision 11 ......................................................................................................................................................................................................................................Dec 2021

Page
1. Section 3.4.3.4, 3.4.3.5 & 3.4.3.6 - Added Details of Explosion Proof Actuators (Page# 58 & Page# 59)

Record of Revisions
(This page is left blank intentionally)
5 Page

Contents
CONTENTS
1 NOTES ON THE DOCUMENTATION ...................................................................................................................................................... 16
1.1 Other Applicable Documents................................................................................................................................................................................................... 16
1.2 Storage of the Documents.......................................................................................................................................................................................................... 16
1.3 Symbols Used .......................................................................................................................................................................................................................................... 16
1.4 Applicability of this Manual......................................................................................................................................................................................................... 16
1.5 Subject to Change............................................................................................................................................................................................................................... 16
1.6 List of Abbreviations.......................................................................................................................................................................................................................... 16
1.7 Glossary - Technical Definitions .......................................................................................................................................................................................... 18
1.8 Metric Conversion Factors ......................................................................................................................................................................................................... 22
Part 1 - NAFFCOInert® System - Design Manual
2 GENERAL INFORMATION .................................................................................................................................................................................. 23

2.1 Introduction ................................................................................................................................................................................................................................................. 23
2.2 Types of Inert Gases ...................................................................................................................................................................................................................... 26
2.3 Safety Precautions.............................................................................................................................................................................................................................. 25
2.3.1 Environment and Exposure....................................................................................................................................................................................................... 25
2.3.2 Hazard Due to Reduced Oxygen Level ....................................................................................................................................................................... 25
2.3.3 NOAEL and LOAEL........................................................................................................................................................................................................................... 26
2.3.4 General Safety Precautions...................................................................................................................................................................................................... 26
2.3.5 Additional Safety Precautions for Cylinders Including Transportation ...................................................................................... 26
3 COMPONENT DESCRIPTIONS ..................................................................................................................................................................... 28
3.1 Cylinder ........................................................................................................................................................................................................................................................... 30
3.2 Cylinder Mounting Parts ............................................................................................................................................................................................................... 33
3.2.1 Floor Mounting Rack Assembly Configuration ................................................................................................................................................... 34
3.2.2 Wall Mounting Rack Assembly Configuration ..................................................................................................................................................... 35
3.3 Discharge Valve ................................................................................................................................................................................................................................. 52
3.3.1 Constant Flow & Pressure Discharge Regulator .............................................................................................................................................. 53
3.3.2 Gasket .............................................................................................................................................................................................................................................................. 54
3.3.3 Pressure Gauge ................................................................................................................................................................................................................................. 55
3.3.3.1 Pressure Gauge for IG01 ............................................................................................................................................................................................................ 55
3.3.3.2 Pressure Gauge for IG100 ......................................................................................................................................................................................................... 55
3.3.3.3 Pressure Gauge for IG55 ............................................................................................................................................................................................................ 55
3.3.3.4 Pressure Gauge for IG541 ......................................................................................................................................................................................................... 55
3.4 Release Device ................................................................................................................................................................................................................................... 56
3.4.1 Manual/Pneumatic Release Device ................................................................................................................................................................................. 56
3.4.2 Pneumatic Release Device ....................................................................................................................................................................................................... 56
6
3.4.3 Electromagnetic Release Device ..................................................................................................................................................................................... 57

Page
3.4.3.1 Electromagnetic Release Device With and Without Diode..................................................................................................................... 57

Contents
3.4.3.2 Reset Tool for Electromagnetic Release Device ............................................................................................................................................... 57

3.4.3.3 Adapter ............................................................................................................................................................................................................................................................ 57
3.4.3.4 Explosion Proof Actuator .......................................................................................................................................................................................................... 58
3.4.3.5 Release Actuator .............................................................................................................................................................................................................................. 58
3.5 Pilot Hose...................................................................................................................................................................................................................................................... 59
3.6 Discharge Hoses .................................................................................................................................................................................................................................. 60
3.6.1 Discharge Hose DN16 for 140l Cylinders ................................................................................................................................................................. 60
3.6.2 Discharge Hose DN12 straight.............................................................................................................................................................................................. 61
3.7 Bleed Valve................................................................................................................................................................................................................................................. 62
3.8 Manifold Check Valve ................................................................................................................................................................................................................... 62
3.9.1 Manifolds ....................................................................................................................................................................................................................................................... 63
3.9.2 End Cap.......................................................................................................................................................................................................................................................... 64
3.10 Nozzles ............................................................................................................................................................................................................................................................ 65
3.10.1 Silent Nozzles ............................. .......................................................................................................................................................................................................... 67
3.11.1 Pressure Relief Device for Manifold ................................................................................................................................................................................ 69
3.11.2 Pressure and Flow Detector Switch................................................................................................................................................................................. 69
3.11.3 Releasing Circuit Disable Switch ................................................... ................................................... ................................................... 69
3.11.4 Monitoring Switch for Electric Release Devices

................................................................................................................................................................................. 70
3.11.5 Tamper Switch........................................................................................ ................................................... ........................................................................... 70
3.12 Selector Valve (For Multi-Zone Distribution) .............................................................................................................................................................. 71

3.12.1 Pneumatic Control Panel (For Multi-Zone Distribution) ............................................ ........................................................................................ 72
3.12.2 Selector Valve with Pilot Cylinder Assembly ...................................................................................... ............................................................... 72

3.12.3 Pneumatic Control Panel (For Multi-distribution) .................................... .................................................. ............................................................... 73
3.13 Pneumatic Control Panel Fixing details ................................................... ................................................... ..................................................................................................... 74
3.13.1 Pressure Reducing Valve .......................................................................................................................................................................................................... 75

3.13.2 Inlet Connection for ¼” Hi-Flex Hose ........................................................................................................................................................................... 75
3.13.3 3/2 way Solenoid Valves with Manual Over-Ride G1/8”............................................................................................................................ 75
3.13.4 Pneumatic Control Panel Size ................................................... .................................................................................................................................................................. 75
3.13.5 Detection and Control .....................................................................................................................................................................................................................

Panel Information 75
4 DESIGN....................................................................................................................................................................................................................................... 76
4.1 Determine the Volume of the Hazard ............................................................................................................................................................................ 77
4.1.1 Rectangular Enclosure ................................................................................................................................................................................................................ 77
4.1.2 Non-Rectangular Irregular Enclosure .................................................................................................................................................................................................. 77
4.1.3 Integrity Test of the Enclosure ............................................................................................................................................................................................... 78

4.1.4 Limitations - Enclosure ................................................................................................................................................................................................................... 78
4.2 Calculation of Extinguishing Agent ................................................................................................................................................................................... 78
4.2.1 Formula for the Calculation of the Minimum Design Concentration ............................................................................................ 79
4.2.2 Calculation of Design Concentration .............................................................................................................................................................................. 79
4.2.3 Alternative Quick Calculation .................................................................................................................................................................................................. 80
4.2.4 Adjustments................................................................................................................................................................................................................................................ 85
4.2.4.1 Altitude and Temperature Adjustments ....................................................................................................................................................................... 85
7
4.2.4.2 Reserve Quantity.................................................................................................................................................................................................................................. 85

Page
4.2.4.3 Unclosable Openings....................................................................................................................................................................................................................... 85

4.2.4.4 Relief Devices to Avoid Overpressure .......................................................................................................................................................................... 86
4.3 Selection of Cylinders...................................................................................................................................................................................................................... 86
Contents
4.3.1 Dependency of the Pressure Inside the Cylinder and the Ambient Temperature ........................................................ 87
4.3.2 Define the Number of Cylinders ........................................................................................................................................................................................... 88
4.3.3 Check of the Final Oxygen Concentration................................................................................................................................................................ 88
4.4 Limitations .................................................................................................................................................................................................................................................... 88
4.4.1 Limitations Cylinders ........................................................................................................................................................................................................................ 88
4.4.2 Define the Pipework and the Location of the Pipework ............................................................................................................................. 89
4.4.3 Define the Nozzles and the Location of the Nozzles .................................................................................................................................... 89
4.4.3.1 Limitations - Nozzles and the Location of the Nozzles............................................................................................................................... 90
4.4.4 Limitations According to UL Certification (UL2127) ...................................................................................................................................... 93
4.5 Vds Calculation Software for Gas Extinguishing Systems ..................................................................................................................... 95
4.5.1 Quick Start Guide of the Vds Calculation Software ...................................................................................................................................... 96
4.5.1.1 Project - Input Screen...................................................................................................................................................................................................................... 97
4.5.1.2 Sections Graphic - Input Screen ......................................................................................................................................................................................... 98
4.5.1.3 Calculations Zones - Input Screen.................................................................................................................................................................................... 99
4.5.1.4 Storage - Input Screen ................................................................................................................................................................................................................. 100
4.5.1.5 Gas Calculation Report ................................................................................................................................................................................................... 101
Part 2 - NAFFCOInert® System - Installation, Operation and Maintenance Manual

5 INSTALLATION............................................................................................................................................................................................................. 118
5.1 Scope ........................................................................................................................................................................................................................................................... 118
5.2 Responsibilities....................................................................................................................................................................................................................................118
5.2.1 Responsibilities - Design Engineer ................................................................................................................................................................................118
5.2.2 Responsibilities - Installer ........................................................................................................................................................................................................118
5.3 Pipework .....................................................................................................................................................................................................................................................118
5.3.1 Selection of Pipework ................................................................................................................................................................................................................. 118
5.3.2 Pipe Supports........................................................................................................................................................................................................................................ 120
5.3.3 Installation of Pipes ......................................................................................................................................................................................................................... 121
5.3.4 Cleaning of Pipework .....................................................................................................................................................................................................................122
5.3.5 Installation of Nozzles .................................................................................................................................................................................................................. 122
5.3.6 Earthing of the Pipework ........................................................................................................................................................................................................... 122
5.3.7 Testing of the Pipework ..................................................................................................................................................................................................................... 123
5.3.8 Electrical Clearance ....................................................................................................................................................................................................................... 123

5.4 Cylinders ..................................................................................................................................................................................................................................................... 124
5.4.1 Labels and Signs ............................................................................................................................................................................................................................... 124
5.4.2 Additional Safety Precautions for Storage Room and Protected Enclosure ............................................................. 133
5.4.3 NAFFCOInert® Battery Location.......................................................................................................................................................................................... 134
5.5 Wall Mounting Cylinder Support ....................................................................... .......................................................................................................... 135
5.6 Manifold Assembly........................................................................................................................................................................................................................... 135
5.6.1 Manifold Mounting Support ............................................................................................................................................................................................................... 135
5.6.2 Manifold Assembly Steps......................................................................................................................................................................................................... 137

5.7 NAFFCOInert® Battery Installation.................................................................................................................................................................................... 138
5.7.1 Single Row................................................................................................................................................................................................................................................ 138
8
5.7.2 Double Row ............................................................................................................................................................................................................................................. 139

Page
5.8 System Assembly ............................................................................................................................................................................................................................. 140

5.9 Tests and Checks Before Commissioning ............................................................................................................................................................ 148

Contents
5.9.1 Pilot Line Test ...................................................................................................................................................................................................................................... 148

5.9.2 Electrical Test of the System ................................................................................................................................................................................................ 150
5.9.3 Commissioning Checklist ......................................................................................................................................................................................................... 150
5.10 Necessary Documents ................................................................................................................................................................................................................ 151
6 OPERATION .................................................................................................................................................................................................................... 152
6.1 Operating Procedures .................................................................................................................................................................................................................. 152
6.2 Personnel Safety ............................................................................................................................................................................................................................... 153
6.3 NAFFCOInert® System 1 Zone .............................................................................................................................................................................................. 153
6.4 ®
NAFFCOInert System Multi-Sector Distribution............................................................................................................................................... 154
6.4.1 Limitations ................................................................................................................................................................................................................................................. 155
6.4.2 Equivalent Length Values ........................................................................................................................................................................................................ 155
6.4.3 Detail Layout of Cylinder Bank Assembly .............................................................................................................................................................. 155
6.4.3.1 Actuation Scenarios with Pilot Cylinder assembly ........................................................................................................................................ 156
6.4.3.2 Actuation Scenarios with Pneumatic Control Panel..................................................................................................................................... 157
6.4.4 Reserve System ................................................................................................................................................................................................................................. 158
7 INSPECTION AND MAINTENANCE ..................................................................................................................................................... 159
7.1 Restrictions and Precautions................................................................................................................................................................................................ 159
7.2 Inspection and Maintenance Program ....................................................................................................................................................................... 159
7.3 Inspection Intervals ......................................................................................................................................................................................................................... 159
7.3.1 At Least Semi-Annual Inspections ................................................................................................................................................................................. 160
7.3.1.1 Pressure Gauge and Cylinder............................................................................................................................................................................................. 160
7.3.1.2 Discharge Valve…............................................................................................................................................................................................................................... 161
7.3.1.3 Release Devices ................................................................................................................................................................................................................................ 163
7.3.1.4 Components............................................................................................................................................................................................................................................ 163
7.3.1.5 Pipework, Pipe Supports and Manifolds .................................................................................................................................................................. 163
7.3.1.6 Nozzles……. ................................................................................................................................................................................................................................................. 163
7.3.1.7 Pilot and Discharge Hoses ..................................................................................................................................................................................................... 163
7.3.1.8 Cylinder Assembly ........................................................................................................................................................................................................................... 164
7.3.1.9 Cylinder Wall Mounting Support and Rack for Cylinder............................................................................................................................. 164
7.3.1.10 Manifold Mounting Support and Rack for Manifold .......................................................................................................................................... 164
7.3.1.11 Storage Room....................................................................................................................................................................................................................................... 164

7.3.1.12 Pressure and Flow Detector Switch ............................................................................................................................................................................. 164
7.3.1.13 Protected Enclosure....................................................................................................................................................................................................................... 164
7.3.1.14 Electromagnetic Release Device..................................................................................................................................................................................... 165
7.3.2 At Least Annual Inspections ................................................................................................................................................................................................. 165
7.3.2.1 Pressure Gauge (Calibrated Test Gauge) ........................................................................................................................................................... 165
7.3.2.2 Electromagnetic Release Device..................................................................................................................................................................................... 165
7.4 Maintenance ........................................................................................................................................................................................................................................... 166
9
7.4.1 5 Year or 10 Year Maintenance (Depending on Local Regulations)........................................................................................ 166

Page
7.4.1.1 Cylinder……. ................................................................................................................................................................................................................................................ 166

7.4.1.2 Pilot and Discharge Hose ........................................................................................................................................................................................................ 166

Contents
7.4.2 10 Year Maintenance.................................................................................................................................................................................................................... 167

7.4.2.1 Discharge Valve Replacement........................................................................................................................................................................................... 167
7.4.2.2 Pilot and Discharge Hose Replacement.................................................................................................................................................................. 167
7.5 Personnel Training........................................................................................................................................................................................................................... 167
8 POST DISCHARGE MAINTENANCE .................................................................................................................................................. 168
8.1 General ......................................................................................................................................................................................................................................................... 168
8.2 Disassembly............................................................................................................................................................................................................................................ 168
8.3 Refilling of an NAFFCOInert® Cylinder........................................................................................................................................................................ 169
8.4 Re-installation of an NAFFCOInert ® Cylinder....................................................................................................................................................... 170
9 MALFUNCTIONING.................................................................................................................................................................................................. 171
9.1 General ......................................................................................................................................................................................................................................................... 171
10 RECYCLING AND DISPOSAL ..................................................................................................................................................................... 172
11 LIMITED WARRANTY ........................................................................................................................................................................................... 173
11.1 Limitation of liability ......................................................................................................................................................................................................................... 173
11.2 Non-assignment of Warranty................................................................................................................................................................................................ 174
11.3 Use of Non NAFFCO Products .......................................................................................................................................................................................... 174
APPENDIX
IG01 Material Safety Data Sheet .............................................................................................................................................................................................................. 175
IG100 Material Safety Data Sheet............................................................................................................................................................................................................ 181
IG55 Material Safety Data Sheet .............................................................................................................................................................................................................. 187
IG541 Material Safety Data Sheet .......................................................................................................................................................................................................... 193
Tapered Thread Port Assembly .................................................................................................................................................................................................................. 200
Pressure and Flow Detector Switch........................................................................................................................................................................................................ 201
Commissioning Test for NAFFCOInert® System.......................................................................................................................................................................... 202
10
Page

Contents
11 Page

List of Figures
LIST OF FIGURES
Title Figure Page

Pneumatic Control Panel F ixing 3-1 70
Temperature/pressure graph for IG01 4-1 83
Nozzle placement in a non-rectangular enclosure 4-5 86
Nozzle location 4-6 86
Example of pipework with one discharge level 4-7 87
Example of pipework with two discharge level 4-8 87
Example of nozzle discharge with obstructions 4-9 88
Example of nozzle discharge without obstructions 4-10 88
Limitation tee splits 4-11 90
Project input screen VdS calculation software 4-12 93
Section Graphic input screen VdS calculation software 4-13 94
Calculation zone input screen VdS calculation software 4-14 95
Storage input screen VdS calculation software 4-15 96
Overpressure VdS calculation software 4-16 97
Distance between pipe supports and nozzles 5-1 117
Location of pipe supports and elbows 5-2 117
Earthing of pipework 5-3 119
Installation height of the cylinder wall mounting support 5-4 131
Distance between the discharge port of the discharge valve and the centre of the 5-5 132
manifold
Manifold assembly steps 5-6 133
End cap attached to the manifold mounting support 5-7 134
Securely fixed cylinder 5-8 135
Cylinder double row 5-9 135
System Assembly 5-10 136
Removal of protection cap and outlet safety plug 5-11 138
Connecting the constant flow and pressure discharge regulator to the discharge valve 5-12 138
Connecting the discharge hose 5-13 139
Connecting the pressure gauge 5-14 139
Pressure gauge unit - pressure switch connection 5-15 140
12
Connecting pneumatic release devices 5-16 140

Page
Resetting the electromagnetic release device 5-17 141

Connecting the electromagnetic release device 5-18 141

List of Figures
LIST OF FIGURES
Title Figure Page

Connecting the electromagnetic release device to power supply 5-19 142
Installation of a manual/pneumatic release device on top of the electromagnetic release 5-20 142
device
Connecting adapters and pilot hoses to the pneumatic release devices on the slave 5-21 143
valves
Connecting the bleed valve 5-22 143
Installation of the pilot line 5-23 144
Test Unit 5-24 145
Pilot Line test 5-25 146
Typical view of an NAFFCOInert ® System for the protection of one hazard area 6-1 149
Typical view of an NAFFCOInert ® System for the protection of two hazard areas 6-2 150
Multiple Zone System 6-3 152
P&ID Multiple Zone System 6-4 154
Discharge Valve performance test 7-1 157
Electromaganetic Release Devices 7-2 161
13 Page

List of Tables
LIST OF TABLES
Title Tabl le Page

Metric conversion factors 1-1 21
Inert gas extinguishing agent quality requirements 2-1 23
Physical properties of inert gas extinguishing agents (SI Units) 2-2 24
Relative hazards to people from reduced oxygen levels (hypoxia) 2-3 25
NOAEL and LOAEL values 2-4 25
IG01 concentrations according to UL2127 4-1 75
Total flooding quantity for IG01 (SI Units) 4-5 77
Altitude correction factors according to ISO 14250 and NFPA 2001 4-9 81
Filling mass of NAFFCOInert ® cylinders at 15°C 4-10 82
Storage floor loading capacity for 67 litres cylinders per metre 4-11 84
Minimum and maximum pipeline flow rates 4-14 89
Bullhead tee split limits and side/through split limits 4-15 89
Minimum design nozzle pressure 4-16 90
NPT threads according to ANSI/ASME B1.20.1 5-1 115
R threads according to ISO 7-1 5-2 116
Maximum distance between two pipe supports 5-3 116
Part numbers for cylinders depending on extinguishing agent 5-4 128
Distance between two manifold mounting support 5-5 133
Components for system assembly 5-6 137
Restriction conditions specified in NFPA 2001 and recommended by EPA 6-1 149
Equivalent Length Values 6-2 151
Inspection and maintenance intervals 7-1 156
14 Page

Notes of the Documentation
15 Page

1. NOTES ON THE DOCUMENTATION

Thank you for buying our NAFFCOInert® System. Before installing and using this appliance, please read this manual
carefully and keep it in a safe place for future reference. The instructions below are intended to help you throughout
the entire manual.
The present document is divided into two manuals:
• Part 1: NAFFCOInert® System - Design Manual
• Part 2: NAFFCOInert® System - Installation, Operation and Maintenance Manual
1.1. Other Applicable Documents
When assembling the NAFFCOInert® System, pay attention to all the installation instructions for the components
and assemblies. These instructions are included with the individual components of the system and the additional
components.
We accept no liability for any damage caused by failure to observe these instructions!
1.2. Storage of the Documents
Please pass on this manual and all other applicable documents and auxiliary equipment to the authorized person,
whose responsibility it is to ensure that the manual and auxiliary equipment are available whenever required.
1.3. Symbols Used
Please observe all safety instructions in this document for the installation of the NAFFCOInert® System! Symbols in
these instructions:
DANGER!
Immediate risk of serious injury or death!
CAUTION!
Potentially dangerous situations for people and / or the product and / or the environment!
NOTE:
Useful information and instructions.
1.4. Applicability of this Manual
This manual is used for designing, installing, operating and maintaining a NAFFCOInert® System in accordance with
UL listing.
1.5. Subject to Change
The data and information such as illustrations, drawings, descriptions, dimensions, weights, materials, technical and
other performances as well as the products and services described in general product descriptions, catalogues,
brochures, websites and price lists are subject to change and may be modified or updated at any time without prior
announcement by National Fire Fighting Manufacturing FZCO.
With the exception of agreed rights of use, the supplier National Fire Fighting Manufacturing FZCO or licenser are
generally owner of all industrial and intellectual property rights, especially industrial property rights, patent and
intellectual property rights including exploitation rights and rights of modification regarding the delivered products.
NOTE:
16
Each sales agent is obliged to hand over the NAFFCOInert® Design, Installation, Operation and
Maintenance Manual to the end user. National Fire Fighting Manufacturing FZCO will not
Page
accept any liability in the event that the sales agent does not comply with this condition.

1.6. List of Abbreviations

A Ampere
AC Alternating Current
AHJ Authority Having Jurisdiction
AISI American Iron and Steel Institute
ANSI American National Standards Institute
atm Atmospheric Pressure
BSPT British Standard Pipe Thread
C Celsius
CEA Council for Estate Agencies
CGA Compressed Gas Association
CrMo-steel Chromium Molybdenum Alloy Steel; also known as Chrome-Moly
CTC Canadian Transport Commission
DC Direct Current
DN Nominal Diameter
DOT U.S. Department of Transportation
DSL Domestic Substances List
DF Design Factor
DQ Design Quantity
e.g. For example (abbreviation of Latin “exempli gratia”)
EINECS European Inventory of Existing Commercial Chemical Substances
ELINCS European List of Notified Chemical Substances
EPA U.S. Environmental Protection Agency
EU European Union
F Fahrenheit
FDQ Final Design Quantity
FIG. Figure
ft Foot/Feet
Hg Mercury
Hz Hertz (Frequency)
i.e. That is (abbreviation of Latin “id est”)
in Inch
ISO International Standards Organization
kg Kilogram
kg/m3 Kilogram Per Cubic Metre
kJ Kilojoule
l Litre
17
lb. Pound
Page
lbf Pound-Force
LOAEL Lowest Observable Adverse Effect Level

LPCB Loss Prevention Certification Board

mA Milliampere
mbar Millibar
MDQ Minimum Design Quantity
mm Millimetre
m3 Cubic Metre
MSDS Material Safety Data Sheet
NFPA National Fire Protection Association
N Newton
Nm Newton Metre
NOAEL No Observed Adverse Effect Level
n.o.s Not Otherwise Specified
NPT National Pipe Thread (U.S.)
NDSL Non-Domestic Substances List
Pa Pascal
PMCC Pensky-Martens Closed-Cup Flash-Point Test
psi Pound-Force Per Square Inch
Rev. No. Revision Number
SARA The Superfund Amendments and Reauthorization Act
Sch. Schedule
SF Safety Factor
SI International System of Units
TSCA Toxic Substances Control Act
UL Underwriters Laboratories
V Volt
VAC Volts Alternating Current
VDC Volts of Direct Current
WHMIS Workplace Hazardous Materials Information System
WN Welding Neck
1.7. Glossary - Technical Definitions
This glossary contains terms in an alphabetical list relating to:
Part 1: NAFFCOInert® System - Design Manual
Part 2: NAFFCOInert® System - Installation, Operation and Maintenance Manual
Alternating Current (AC): an electric current that reverses its direction at regularly recurring intervals.
Ampere: the unit of measurement of electrical current produced in a circuit by 1 volt acting through a resistance of 1
ohm.
18
Approved: acceptance of the relevant Authority Having Jurisdiction.

Page

ASME: the registered trademark of The American Society of Mechanical Engineers, formerly the American Society
of Mechanical Engineers. ASME is a professional association, an engineering society, a standards organization, a
research and development organization, a lobbying organization, a provider of training and education, and a non-
profit organization.
ASTM: known until 2001 as the American Society for Testing and Materials (ASTM), is an international standards
organization that develops and publishes technical standards.
Atmospheric Pressure: the force per unit area exerted on a surface by the weight of air above that surface in the
atmosphere of the earth.
Authority Having Jurisdiction: organization, office, surveyor or individual responsible for approving equipment,
installations or procedures.
Boundary Surface: the sum of any area of walls, ceilings and floors in an enclosure.
Class A fire: fire in ordinary combustible materials, e.g. fires involving solid materials normally of organic nature,
such as rubbers, wood, paper, data processing equipment etc. These fires typically produce deep-seated fires that
may require higher design concentrations for extended holding times.
Class A Polymeric Fire: fire in plastic materials such as polypropylene or PVC. These fires typically produce deep-
seated fires that may require extended holding times.
Class B Fire: fire in combustible liquids, mainly hydrocarbons, solvents, glycols, methanol, oils, tars and other
additives. These fires produce surface fires.
Class C Fire: NFPA 2001, fire that involves energized electrical equipment where the electrical resistivity of the
extinguishing agent is of importance.
Clean Agent: electrically non-conductive, volatile, or gaseous extinguishing agent that does not leave a residue
upon evaporation.
Commissioning: process by which an equipment, facility, or plant (which is installed, or is complete) is tested to
verify if it functions according to its design objectives or specifications.
Container: used as synonym for “cylinder” in the VdS calculation software.
Deep-Seated Fire: fire involving a flammable, which due to the way of storage contains oxygen. The flammable e.g.
bulk paper, rolls of paper, furs, dust collectors, vaults etc. will when on fire create a layer of more or less solid ash
preventing the extinguishing agent to reach the flame. The fire will continue until the oxygen within the material is
reduced to below the level sustaining the fire.
Design Concentration: the required minimum concentration of extinguishing agent in percent which has to be
achieved inside the protected enclosure including safety factors.
Design Quantity (DQ): the quantity of extinguishing agent to be discharged into the enclosure.
Design Factor (DF): a fraction of the extinguishing agent minimum design quantity added thereto deemed appro-
priate due to a specific feature of the protection application or design of the suppression system.
Discharge Rate: the ratio of the quantity of agent discharged from a nozzle to the discharge time measured within
±1 second. When a minimum discharge rate is indicated, reference is made to the minimum quantity of agent
discharged and the time measured within ±1 second.
Discharge Time: the time it takes to achieve a release of the required specific design quantity. ISO and NFPA
19
specify that 95% of the extinguishing agent including the allocated safety factor shall not exceed 60 seconds for
Page
Class B fuel hazards, and 120 seconds for Class A surface fire hazards or Class C hazards.

Document: a form of information, a record or the capturing of some event or thing so that the information will not be
lost. Normally, a document is written, but a document can also be made with pictures and sounds. A document can
be put into an electronic form and saved and stored in a computer as a uniquely named file. Product labels and
stickers on products containing product specifications are also considered as documents.
Enclosure: the casing, housing, partitions or walls which surround the protected hazard and substantially will
contain the extinguishing agent for a sufficient length of time to achieve the fire extinguishing objectives.
Engineered System: a system that requires individual design and calculation to determine the flow rates, pipe size,
nozzles, nozzle pressures, area protected by each nozzle, quantity of extinguishing agent, and the number and
types of nozzles and their placement in a specific system.
Extinguishing Agent Concentration: the portion of extinguishing agent in a mixture of extinguishing agent and air
expressed in volume percent.
Final Design Quantity (FDQ): the quantity of extinguishing agent determined from extinguishing agent minimum
design quantity as adjusted to account for design factors and pressure adjustment.
Fire Alarm: an audible and/or visual device that alerts occupants that a fire occurs. Fire alarms usually signal
occupants to evacuate.
Gross Volume: volume enclosed by building elements
Height: the measurement of vertical distance
Hold Time: period where the design concentration is higher than the cup burner extinguishing agent concentration in
the protected enclosure. The general definition is that the hold time starts when design concentration throughout the
enclosure is reached and lasts until the concentration at the tallest hazard in the enclosure has dropped to less than
the extinguishing agent concentration. The minimum hold time is normally 15 minutes unless specified otherwise by
the Authority Having Jurisdiction. The determination of the required hold time, may depend on:
1. Response time of trained personnel
2. Arrival time of fire department
3. Sources of persistent ignition
4. Excessive enclosure leakage
5. System enclosure venting requirements
6. Inertion and re-flash hazards
7. Cool-down time of hot equipment
8. Run-down time of rotating equipment
Inert Gas Extinguishing Agent: an extinguishing agent that contains as primary components one or more of the
gases argon or nitrogen. Inert gases that are blends of gases can also contain carbon dioxide as a secondary
component.
NAFFCOInert® Battery: several inert gas cylinders combined in one unit.
Inspection: a visual examination of the system or portion thereof to verify that it appears to be in operating condition
and is free of physical damage.
Listed: equipment, materials, or services included in a list published by an organization acceptable to the Authority
Having Jurisdiction and concerned with evaluation of products or services, that maintains periodic inspection of
20
production of listed equipment or materials or periodic evaluation of services, and whose listing states that either the
Page
equipment, material, or service meets appropriate designated standards or has been tested and found suitable for a
specified purpose.

LOAEL: Lowest Observable Adverse Effect Level. The lowest concentration at which an adverse toxicological or
physiological effect has been observed in humans.
Maintenance: a “thorough check” to give maximum assurance that the extinguishing system will operate as
intended. Design parameters should be closely examined for hazard changes since the last inspection, parts and
components should be closely examined and tested or replaced if necessary.
Maximum Concentration: concentration achieved from the actual extinguishing agent quantity at the maximum
ambient temperature in the protected enclosure.
Minimum Design Quantity (MDQ): the minimum quantity of extinguishing agent to be discharged into the en-
closure.
NOAEL: No Observable Adverse Effect Level. The highest concentration at which no adverse toxicological or
physiological effect has been observed in humans.
Net Volume: gross volume minus the volume of permanent impermeable building elements in the enclosure.
Normally Occupied Area: area that is intended for occupancy, where people are present most of the time.
Normally Unoccupied Area: area that is normally not occupied by people, but which may be entered occasionally
for brief periods. Examples: transformer bays, switch-houses, pump rooms, vaults, engine test stands, cable trays,
tunnels, microwave relay stations, flammable liquid storage areas, enclosed energy systems.
Nozzle: a device that is used to distribute the extinguishing agent within a specific volume or over a specific area or
both.
Nozzle Coverage: maximum area or volume protected by one nozzle. The nozzle coverage is normally defined on
the basis of location or projection distance and the discharge rate. A sufficient number of nozzles must always be
installed to adequately cover the volume of the entire hazard.
Protected Area: all areas, rooms, enclosures that are connected to a fire extinguishing system.
PTFE Tape: PolyTetraFluoroEthylene tape (EN 751-3) is a thin tape that is used as a sealant for threads.
Reserve Quantity: quantity of extinguishing agent available for further discharge in addition to storage quantity.
Safety Factor (SF): a multiplier of the extinguishing agent concentration to determine the extinguishing agent
minimum design concentration.
Sea Level Equivalent of Extinguishing Agent: the extinguishing agent concentration in volume percent at sea
level for which the partial pressure of extinguishing agent matches the ambient partial pressure of extinguishing
agent at a given altitude.
Sea Level Equivalent of Oxygen: the oxygen concentration in volume percent at sea level for which the partial
pressure of oxygen matches the ambient partial pressure of oxygen at a given altitude.
Shall: indicates a mandatory requirement.
Should: indicates a recommendation.
Storage Quantity: the total quantity of extinguishing agent kept available for use within a flooding area, comprising
the design quantity.
Time Delay: time between the release of the inert gas and the discharge through the nozzles.
21
Total Flooding: the act and manner of discharging an extinguishing agent to achieve a specified minimum extin-
guishing agent concentration throughout a hazard volume.
Page

Total Flooding System: a system consisting of a supply of extinguishing agent and of a distribution network,
arranged to discharge the extinguishing agent into the hazard volume and to fill that hazard volume to an effective
extinguishing agent concentration to achieve a total flooding condition in a hazard volume.
Units: metric units of measurements are in accordance with the modernized metric system, known as the In-
ternational System of Units (SI). Three units - inch, litre and bar - outside of but recognized by SI, are commonly
used in fire protection. These units are listed in Table 1-1 in chapter 1.8.
VdS: an independent German institution ensuring safety and trust in the fields of fire protection and security.
1.8. Metric Conversion Factors
Name of unit Unit symbol Conversion factor U.S.
millimetre mm 1 in = 25,4 mm
litre L 1 gal. = 3,785 l
cubic metre m3 1 ft3 = 0,028317 m3
kilogram kg 1 lb. = 0,4536 kg
kilogram per cubic metre kg/m3 1 lb./ft3 = 16,0185 kg/m3
pascal pa 1 psi = 6895 Pa
bar bar 1 psi = 0,0689 bar
bar bar 1 bar = 105 Pa
Table 1-1 Metric Conversion
22 Page

Part 1 : NAFFCOInert® System - Design Manual
Component Descriptions
2. GENERAL INFORMATION
2.1. Introduction
The NAFFCOInert® System is a fire suppression system, that is particularly useful for suppressing fires in hazards
where an electrically non-conductive medium is required; where clean-up of other extinguishing agents is a problem;
or where the hazard is normally occupied and requires a non-toxic extinguishing agent and where an extinguishing
capability with low weight is required.
The following examples are typical hazards protected by a NAFFCOInert® System:
 Computer rooms
 Telecommunication switch gear
 Storages
 Vaults
 Process equipment
 Machinery spaces
 Historic buildings and museums
 All normally occupied or unoccupied electronic areas where equipment is either very sensitive or
irreplaceable
The NAFFCOInert® System is designed for fires of class A, class B and class C.
 Class A Fire: fire in ordinary combustible materials, e.g. fires involving solid materials normally of organic
nature, such as rubbers, wood, paper, data processing equipment etc. These fires typically produce deep-
seated fires that may require higher design concentrations for extended holding times.
 Class A Polymeric Fire: fire in plastic materials such as polypropylene or PVC. These fires typically produce
deep-seated fires that may require extended holding times.
 Class B Fire: fire in combustible liquids, mainly hydrocarbons, solvents, glycols, methanol, oils, tars and
other additives. These fires produce surface fires.
 Class C Fire: NFPA 2001, fire involves for energized electrical equipment (at 480 Volts or less) where the
electrical resistivity of the extinguishing agent is of importance.
The NAFFCOInert® System uses inert gas as extinguishing agent. The inert gas is stored in chromium molybdenum
alloy steel cylinders located in a safe and accessible location. The inert gas is distributed and discharged into the
area affected by fire through a network of pipes and nozzles. Each nozzle is drilled with a specific fixed opening
designed to deliver a uniform amount of extinguishing agent into the protected area. The cylinders are connected to
the pipework or the manifold by means of flexible discharge hoses and constant flow and pressure discharge
regulators. Various types of actuators are available for the release of the inert gas into the protected area in case of
fire.
The NAFFCOInert® System can be actuated by detection and control equipment for automatic system operation
along with providing local and remote manual operation as needed. Accessories are used to provide alarms,
ventilation control, door closures, or other auxiliary shutdown functions.
The NAFFCOInert® System combines an environmentally safe extinguishing agent, highly effective detection
devices and specially developed components for a fast extinguishing agent discharge. The resulting rapid fire
suppression reduces property damage to the lowest possible level.
The NAFFCOInert® System is designed for total flooding in accordance with NFPA 2001 Standard on Clean Agent
23
Fire Extinguishing Systems and ISO14520-1 Gaseous fire-extinguishing systems and the U.S. Environmental
Page
.
Protection Agency

The complexity of the NAFFCOInert® System does not allow for any simple method of manual calculation.
Therefore, the flow calculations and design criteria described in this manual have been incorporated into a VdS
calculation software. The calculations are based on conserving mass, energy and momentum in the pipework. The
routine calculates the flow in quasi-steady state steps from the initiation of the discharge to the final gas distribution.
The system designer must become thoroughly familiar with this manual in order to learn the proper procedures for
applying the input parameters to the NAFFCOInert® System flow calculation software. There are a number of
limitations to these input parameters which must be observed if accurate results are to be obtained.
2.2. Types of Inert Gases
The NAFFCOInert® System is designed for the use with inert gases:
 IG01 (Argon)
 IG100 (Nitrogen)
 IG55 (Argon and Nitrogen)
 IG541 (Nitrogen, Argon and Carbon dioxide)
As inert gases are derived from gases present in the earth’s atmosphere, they exhibit no ozone depletion potential
and they do not contribute to global warming.
When an inert gas is discharged into an enclosure, it introduces the proper mixture of gas that will allow persons to
breathe in a reduced oxygen atmosphere. The advantages of inert gases are:
 People safe at concentration levels required to suppress fire
 Zero ozone depletion potential.
 Zero global warming potential
 Colourless, odourless
 No residue to clean up after discharge
 No decomposition products
 Electrically non-conductive
 Natural gas present in the atmosphere
 Stored as a gas
 Fogging does not occur when agent is discharged
The extinguishing effect of the NAFFCOInert® System is based on distributing the inert gas into the protected area
by total flooding. All gases used in the NAFFCOInert® System are chemically inert. Therefore they have an excellent
extinguishing efficiency with fires of class A, B and C. All gases used in the NAFFCOInert® System are suitable for
the extinguishing of deep-seated fires.
IG01 IG100 IG55 IG541
99.9%
N2 --- 50% 52%
minimum
Composition in Volume Percent 99.9%
Ar --- 50% 40%
minimum
CO2 --- --- 0% 8%
Water Content in Percent by 0.005% 0.005% 0.005% 0.005%
Weight maximum maximum maximum maximum
Table 2-1 Inert gas extinguishing agent quality requirements
24 Page

IG01 IG100 IG55 IG541

Chemical Formula Ar N2 N2 / Ar N2 / Ar / CO2
Molecular Weight 39.90 g/mole 28.02 g/mole 33.95 g/mole 34.00 g/mole
Boiling Point at 760 mm Hg -189.85°C -195.80°C -190.10°C -196.00°C
Boiling Point at 1.013 bar -185.90°C -195.80°C -196.00°C -196.00°C
Freezing Point -189.35°C -210.01°C -199.70°C -78,5°C
Critical Temperature -122.30°C -146.95°C -134.7°C N/A
Critical Pressure 4903 kPa 3399 kPa 4150 kPa N/A
NOAEL 43% 43% 43% 43%
LOAEL 52% 52% 52% 52%
Specific Heat, Vapour at Constant
0.519 kJ/kg 1.04 kJ/kg 0.782 kJ/kg 0.574 kJ/kg
Pressure (1 atm) at 25°C
Heat of Vaporization at Boiling Point 163 kJ/kg 199 kJ/kg 181 kJ/kg 220 kJ/kg
Relative Dielectric Strength at 1 atm
1.01 1.0 1.01 1.03
at 734 mm Hg at 25°C (N2 = 1.0)
Solubility of Water in Extinguishing
0.006% 0.0013% 0.006% 0.015%
Agent at 25°C
Ozone Depletion Potential (ODP) 0 0 0 0
Global warming potential (GWP) 0 0 0 0
Table 2-2 Physical properties of inert gas extinguishing agents (SI Units)
2.3. Safety Precautions

The design, installation, operation, testing and maintenance of the NAFFCOInert® System must be in accordance
with, but not necessarily limited to, the recommendations of National Fire Fighting Manufacturing FZCO, plus the
applicable requirements set forth in the latest editions of the following standards:
 NFPA 2001 Standard on Clean Agent Fire Extinguishing Systems
 ISO 14520-1 Gaseous fire-extinguishing systems
The standards and requirements listed, as well as all other applicable codes and standards, must be used as
“minimum” safety precaution standards.
Before handling the NAFFCOInert® System, all responsible personnel must be thoroughly trained in the safe
handling of the cylinders as well as in the proper procedures for installation, removal, filling, and connection of all
components. The NAFFCOInert® System uses equipment under high pressure (up to 360 bar / 5220 psi). Any
person installing or servicing a NAFFCOInert® System must be aware of the safety issues in order to avoid any
dangerous situation.
2.3.1. Environment and Exposure
Inert extinguishing agent gases do not cause any decomposition product when exposed to temperatures up to
2000°C (3632°F). Inert gases have no negative influence on equipment or materials which are operated in normal
office environment. As inert gases are derived from gases present in the earth’s atmosphere, full-scale testing can
be performed without concerns about environmental impact.
2.3.2. Hazard due to reduced oxygen level
25
The design concentration of extinguishing agent reduces the oxygen level in the air to approximately 12% to 13%. At
this level the air is still breathable, although there is impairment in physical performance.
Page

If a person is exposed to this reduced oxygen level, a quick evacuation out of the enclosure should lead to a fast and
healthy recovery with no long-lasting physiological effects. Unnecessary exposure of personnel to any extinguishing
agent must be avoided by evacuation from the protected area prior to discharge.
Oxygen Concentration in Volume Maximum Human Exposure
Hazard Type
Percent Time
Normally occupied area > 12% 5 minutes
Normally occupied area 10% to 12% 3 minutes
Normally unoccupied area 8% to 10% 30 seconds
0 seconds
Normally unoccupied area < 8%
(Humans must not be exposed)
Table 2-3 Maximum human exposure time at reduced oxygen levels
2.3.3. NOAEL and LOAEL

The NOAEL (No Observable Adverse Effect Level) and the LOAEL (Lowest Observable Adverse Effect Level) are
used in several international standards to establish minimum exposure levels to mixtures of extinguishing agent and
air.
NOAEL and LOAEL values are normally applied to chemicals with known toxic effects, however, in order that inert
gases can be cross-referenced to these standards, functional equivalents have been agreed based upon the
physiological effects in humans in hypoxic atmospheres. For inert gas the NOAEL corresponds to an oxygen level of
12%-vol and the LOAEL to an oxygen level of 10%-vol.
Equivalent Maximum Concentration of
Level Minimum Level of Oxygen
Extinguishing Agent (inert gas)
NOAEL 12%-vol 43%-vol
LOAEL 10%-vol 52%-vol
Table 2-4 NOAEL and LOAEL values
2.3.4. General Safety Precautions

The following safety procedures must be observed at all times:
DANGER!
Always wear safety goggles, safety shoes, helmet and protective clothing, when working on the
NAFFCOInert® System.
DANGER!
Always do the work in a clean and well-lit area with good airflow.
DANGER!
Do not eat, drink or smoke in the work area.
2.3.5. Additional safety precautions for cylinders including transportation
DANGER!
Do not handle, move or leave a cylinder unfastened without the protection cap.
DANGER!
Each NAFFCOInert® cylinder is factory-equipped with a protection cap installed on cylinder
outlet, and securely chained to the cylinder to prevent loss. The protection cap must be
26
installed on the cylinder at all times, except when the cylinder is connected to the pipework or
when the cylinder is filled or refilled.
Page

DANGER!
Cylinders must be transported properly secured. Cylinders must not be rolled, dragged or slid,
nor allowed to be slid from tailgates of vehicles. Cylinders next to the driver’s cabin must be
parallel with vehicle axles or standing up.
DANGER!
Cylinders must not be dropped or permitted to strike against other surfaces or each other.
DANGER!
Cylinders must be stored standing upright and secured in place.
DANGER!
Always secure a standing cylinder to prevent falling.
DANGER!
Do not grab the protective cap to move or lift the cylinder.
DANGER!
If pressure must be released from a cylinder, secure the cylinder properly for pressure bleed-
off. The outlet force may exceed 2000N (449.61 lbf).
CAUTION!
Always obey the local transportation regulations and ensure proper shipping documents.
CAUTION!
Refilling of NAFFCOInert® cylinders must only be performed by National Fire Fighting
Manufacturing FZCO certified filling stations.
27 Page

3. COMPONENT DESCRIPTIONS
This chapter provides a functional description of the components in the NAFFCOInert® System designed for use
with inert gases. National Fire Fighting Manufacturing FZCO offers all components to configure a complete 200 or
300 bar system.
DANGER!
For your own safety, do not allow anyone other than fire protection personnel - qualified and
trained by National Fire Fighting Manufacturing FZCO - to install, service or repair this
NAFFCOInert® System. Any improper use is forbidden.
NOTE:
The NAFFCOInert® System must not be combined with components produced by other
manufacturers than National Fire Fighting Manufacturing FZCO. The use of non-genuine
National Fire Fighting Manufacturing FZCO components shall be considered as improper use.
We accept no liability. The limited warranty does not apply to malfunction, failure or damage of
the NAFFCOInert® System if non-genuine components are used.
NOTE:
The NAFFCOInert® System is built according to the state-of-the-art and recognised safety rules
and regulations. The NAFFCOInert® System must be installed, inspected, maintained, tested and
recharged only by fire protection personnel - qualified and trained by National Fire Fighting
Manufacturing FZCO - in accordance with existing regulations, rules and guidelines including
requirements of the Governmental and/or Local Authority and other regulatory authorities, i.e.:
NFPA 2001 Standard on Clean Agent Fire Extinguishing Systems.
NOTE:
National Fire Fighting Manufacturing FZCO cannot be held responsible for eventual damage
caused by inappropriate, improper or irresponsible use and/or for repairs made to the product
by unauthorized personnel. Intended use includes observance of this manual and all other
applicable documents, as well as adherence to maintenance and inspection conditions
NOTE:
Due to continuous improvement of our products, National Fire Fighting Manufacturing FZCO
reserves the right to modify products without prior notice. Therefore, the delivered components
may differ from the components pictured in this chapter, without any change in the use and the
characteristics of the components.
Components according to the figure on page 28

1 Cylinder 11 Manifold Mounting Support
2 Cylinder Mounting Support 12 Support For Manifold
3 Floor Mounting Vertical Steel Post 13 Manifold
4 Discharge Valve 14 Pneumatic Release Device
5 Pressure Gauge with Low Pressure Switch 15 Bleed Valve
6 Electromagnetic Release Device 16 Manifold Check Valve
7 Manual/Pneumatic Release Device 17 Nozzle
8 Discharge Hose 18 Safety/Shipping Cap
28
9 Pilot Hose 19 Adaptor

Page
10 Constant Flow and Pressure Discharge Regulator 20 Label

13
12
16
11
8
7
9 14 19 15 17
6
4 5
10
18
20
1 29 Page

3.1. Cylinder
The cylinder for vertical installation only is a red-coated steel construction. The cylinders are constructed, tested and
marked in accordance to ISO 9809 Standard with TPED Directives (Pi Mark) or UN ISO 9809-2 Standard (DOT
Approved) or PESO (CCOE) Approvals. Each cylinder is delivered with a protection cap.
Safety/shipping cap
Red plastic protection cap

Discharge Valve
Cylinder
Technical Data
Water volume 67 litres 67 litres 67 litres 67 litres 80 litres
External diameter 267mm 356mm 267mm 356mm 267mm
Height 1470mm 900mm 1526mm 900mm 1710mm
Working pressure 200 bar 200 bar 300 bar 300 bar 200 bar
Test pressure 300 bar 300 bar 450 bar 450 bar 300 bar
Safety/shipping cap
W80 x 1/11“
thread
Color of Body RAL 3000
Material CrMo-steel
Conformity 2010/35/EU - TPED
Technical Data
Height 1025mm 1780mm 1090mm 1690mm 1760mm
Working pressure 200 bar 300 bar 300 bar 200bar 300 bar
Test pressure 300 bar 450 bar 450 bar 300 bar 450 bar
Safety/shipping cap
W80 x 1/11“
thread
Color of Body RAL 3000
Material CrMo-steel
30
Conformity 2010/35/EU - TPED

Page

Cylinder/valve Assembly
Model No. (Filled NFIG01-200- NFIG01-200- NFIG01-300- NFIG01-300- NFIG01-200-
IG01) 067A 067B 067A 067B 080A
IG100) 067A 067B 067A 067B 080A
IG55) 067A 067B 067A 067B 080A
IG541) 067A 067B 067A 067B 080A
Cylinder/Valve Assembly
External diameter 356mm 267mm 356mm 356 mm 356 mm
Model No. (Filled NFIG01-200- NFIG01-300- NFIG01-300-
NFIG01-200-140 NFIG01-300-140
IG01) 080B 080A 080B
IG100) 080B 080A 080B 140 140
Model No. (Filled NFIG55-200- NFIG55-300- NFIG55-300-
NFIG55-200-140 NFIG55-300-140
IG55) 080B 080A 080B
IG541) 080B 080A 080B 140 140
Technical Data *
Height 1520 mm 1580mm 1740mm 1825 mm 1665mm
Working pressure 200 bar 300 bar 200 bar 300 bar 300 Bar
Test pressure 300 bar 450 bar 300 bar 450 bar 450 Bar
Thread 25E
Color of Body RAL3000
Material 34CrMo4 EN10083
Design & Approval IS 7285 (Part:2): 2004
31 Page

Cylinder/valve Assembly*
IG01) 068 068 080 080 140A
IG100) 068 068 080 080 140A
IG55) 068 068 080 080 140A
IG541) 068 068 080 080 140A
Technical Data
Water volume 80 litres 80 litres 140 litres 140 litres
External diameter 267mm 267mm 360mm 360mm
Height 1780mm 1780mm 1745 mm 1745mm
Working pressure 200 bar 300 bar 200 bar 300 Bar
Test pressure 300 bar 450 bar 300 bar 450 Bar
Thread 25E
Color of Body RAL3000
Material 34CrMo4 EN10083
Design & Approval UN ISO 9809-2 Standard (DOT Approved)
Cylinder/valve Assembly
Water volume 80 litres 80 litres 140 litres 140 litres
Working pressure 200 bar 300 bar 200 bar 300 bar
External diameter 267mm 267mm 360mm 360mm
Model No. (Filled NFIG01-200- NFIG01-300- NFIG01-200- NFIG01-300-
IG01) 080D 080D 140D 140D
Model No. (Filled NFIG100-200- NFIG100-300- NFIG100-200 NFIG100-300-
IG100) 080D 080D 140D 140D
Model No. (Filled NFIG55-200- NFIG55-300- NFIG55-200- NFIG55-300-
IG55) 080D 080D 140D 140D
Model No. (Filled NFIG541-200- NFIG541-300- NFIG541-200 NFIG541-300-
IG541) 080D 080D 140D 140D
*All Cylinder/ Valve Assemblies manufactured with PESO (CCOE) approved cylinders are limited only with UL Listing
32 Page

3.2. Cylinder Mounting Parts
No. Description
1 Vertical Steel Post
2 Rack Mounting Slotted Channel
3 Middle Support
4 Outer Support
5 Base
6 Manifold Support
7 Gazette Plate
8 U Bolt M10
9 Threaded Rod M10
10 Bolt M10
11 Nut M10
12 Nut M10
13 M10 Washer
14 M10 Washer
33 Page

3.2.1 Floor Mounting Rack Assembly Configuration

Single-Row Mounting
Mounting configuration are used to secure the cylinders to a wall or other
suitable mounting surface. Single row cylinder mounting kits for
configuration of 1 to 5 cylinders. A single- row cylinder rack utilizes the
cylinder mounting rack, along with Slotted Square beam backing to secure
the cylinders. The assembly part numbers include all the hardware required
to secure the cylinders to the rear support.
Double-Row Mounting
Double-row cylinder mounting may be used when it is necessary to have
up to 10 cylinders in a single storage rack. A double-row cylinder storage
rack utilizes slotted square beam and threaded rod to secure the cylinders.
The assembly part numbers include all the hardware required to assemble
the racking and secure the cylinders. The installer must provide the
hardware necessary to secure the rear support to the mounting structure.
Other Mounting
There will be times when the system will require a number of cylinders that
does not match any of the configurations above. Because of this, NAFFCO
makes available additional racking options for cylinder storage. Details for
these racking configurations are shown below.
34 Page

3.2.2 Wall Mounting Rack Assembly Configuration

Single-Row Mounting
Double-Row Mounting
Other Mounting 35 Page

Single Row Floor Mounting Cylinder Rack with Manifold Support (267 Dia)
Channel
100x50x5
INERT GAS SINGLE ROW FLOOR MOUNTING CYLINDER RACK DIMENSION DETAILS (Ø267 CYLINDER)
MODEL No. A B C2/3x D D E G H I J
NFIG-RA01-001F/67L-200 534 409 980 1470 173.5 510 1922 204.5 -
NFIG-RA01-001F/67L-300 534 409 1017 1526 173.5 510 1978 204.5 -
NFIG-RA01-001F/80L-200 534 409 1140 1710 173.5 510 2162 204.5 -
NFIG-RA01-001F/80L-300 534 409 1187 1780 173.5 510 2232 204.5 -
NFIG-RI01-001F/68L-200 534 409 1013 1520 173.5 510 1972 204.5 -
NFIG-RI01-001F/68L-300 534 409 1053 1580 173.5 510 2032 204.5 -
NFIG-RI01-001F/80L-200 534 409 1160 1740 173.5 510 2192 204.5 -
NFIG-RI01-001F/80L-300 534 409 1217 1825 173.5 510 2277 204.5 -
NFIG-RD01-001F/80L 534 409 1187 1780 173.5 510 2232 204.5 -
NFIG-RA01-002F/67L-200 841 716 980 1470 173.5 510 1922 204.5 307
NFIG-RA01-002F/67L-300 841 716 1017 1526 173.5 510 1978 204.5 307
NFIG-RA01-002F/80L-200 841 716 1140 1710 173.5 510 2162 204.5 307
NFIG-RA01-002F/80L-300 841 716 1187 1780 173.5 510 2232 204.5 307
NFIG-RI01-002F/68L-200 841 716 1013 1520 173.5 510 1972 204.5 307
NFIG-RI01-002F/68L-300 841 716 1053 1580 173.5 510 2032 204.5 307
NFIG-RI01-002F/80L-200 841 716 1160 1740 173.5 510 2192 204.5 307
NFIG-RI01-002F/80L-300 841 716 1217 1825 173.5 510 2277 204.5 307
NFIG-RD01-002F/80L 841 716 1187 1780 173.5 510 2232 204.5 307
NFIG-RA01-003F/67L-200 1148 1023 980 1470 173.5 510 1922 204.5 307
NFIG-RA01-003F/67L-300 1148 1023 1017 1526 173.5 510 1978 204.5 307
NFIG-RA01-003F/80L-200 1148 1023 1140 1710 173.5 510 2162 204.5 307
NFIG-RA01-003F/80L-300 1148 1023 1187 1780 173.5 510 2232 204.5 307
NFIG-RI01-003F/68L-200 1148 1023 1013 1520 173.5 510 1972 204.5 307
NFIG-RI01-003F/68L-300 1148 1023 1053 1580 173.5 510 2032 204.5 307
NFIG-RI01-003F/80L-200 1148 1023 1160 1740 173.5 510 2192 204.5 307
NFIG-RI01-003F/80L-300 1148 1023 1217 1825 173.5 510 2277 204.5 307
NFIG-RD01-003F/80L 1148 1023 1187 1780 173.5 510 2232 204.5 307
NFIG-RA01-004F/67L-200 1455 1330 980 1470 173.5 510 1922 204.5 307
NFIG-RA01-004F/67L-300 1455 1330 1017 1526 173.5 510 1978 204.5 307
NFIG-RA01-004F/80L-200 1455 1330 1140 1710 173.5 510 2162 204.5 307
36
NFIG-RA01-004F/80L-300 1455 1330 1187 1780 173.5 510 2232 204.5 307
NFIG-RI01-004F/68L-200 1455 1330 1013 1520 173.5 510 1972 204.5 307
Page
NFIG-RI01-004F/68L-300 1455 1330 1053 1580 173.5 510 2032 204.5 307
Tabl le Continued in nexx t page.. .....................

NFIG-RI01-004F/80L-200 1455 1330 1160 1740 173.5 510 2192 204.5 307
NFIG-RI01-004F/80L-300 1455 1330 1217 1825 173.5 510 2277 204.5 307
NFIG-RD01-003F/80L 1455 1330 1187 1780 173.5 510 2232 204.5 307
NFIG-RA01-005F/67L-200 1762 1637 980 1470 173.5 510 1922 204.5 307
NFIG-RA01-005F/67L-300 1762 1637 1017 1526 173.5 510 1978 204.5 307
NFIG-RA01-005F/80L-200 1762 1637 1140 1710 173.5 510 2162 204.5 307
NFIG-RA01-005F/80L-300 1762 1637 1187 1780 173.5 510 2232 204.5 307
NFIG-RI01-005F/68L-200 1762 1637 1013 1520 173.5 510 1972 204.5 307
NFIG-RI01-005F/68L-300 1762 1637 1053 1580 173.5 510 2032 204.5 307
NFIG-RI01-005F/80L-200 1762 1637 1160 1740 173.5 510 2192 204.5 307
NFIG-RI01-005F/80L-300 1762 1637 1217 1825 173.5 510 2277 204.5 307
NFIG-RD01-005F/80L 1762 1637 1187 1780 173.5 510 2232 204.5 307
Single Row Floor Mounting Cylinder Rack with Manifold Support (356 Dia)
Channel
100x50x5
INERT GAS SINGLE ROW FLOOR MOUNTING CYLINDER RACK DIMENSION DETAILS ( Ø356 CYLINDER)
C
MODEL No. A B D E G H I J
2/3x D
NFIG-RA02-001F/67L-200 623 498 600 900 218 600 1352 249 -
NFIG-RA02-001F/67L-300 623 498 600 900 218 600 1352 249 -
NFIG-RA02-001F/80L-200 623 498 683 1025 218 600 1477 249 -
NFIG-RA02-001F/80L-300 623 498 727 1090 218 600 1542 249 -
NFIG-RA02-001F/140L-200 623 498 1127 1690 218 600 2142 249 -
NFIG-RA02-001F/140L-300 623 498 1173 1760 218 600 2212 249 -
NFIG-RI02-001F/140L-300 623 498 1110 1665 218 600 2117 249 -
NFIG-RD02-001F/140L 623 498 1163 1745 218 600 2197 249 -
NFIG-RA02-002F/67L-200 1019 894 600 900 218 600 1352 249 396
NFIG-RA02-002F/67L-300 1019 894 600 900 218 600 1352 249 396
NFIG-RA02-002F/80L-200 1019 894 683 1025 218 600 1477 249 396
NFIG-RA02-002F/80L-300 1019 894 727 1090 218 600 1542 249 396
NFIG-RA02-002F/140L-200 1019 894 1127 1690 218 600 2142 249 396
NFIG-RA02-002F/140L-300 1019 894 1173 1760 218 600 2212 249 396
NFIG-RI02-002F/140L-300 1019 894 1110 1665 218 600 2117 249 396
37
NFIG-RD02-002F/140L 1019 894 1163 1745 218 600 2197 249 396
NFIG-RA02-003F/67L-200 1415 1290 600 900 218 600 1352 249 396
Page
NFIG-RA02-003F/67L-300 1415 1290 600 900 218 600 1352 249 396
NFIG-RA02-003F/80L-200 1415 1290 683 1025 218 600 1477 249 396
NFIG-RA02-003F/80L-300 1415 1290 727 1090 218 600 1542 249 396
Tabl le Continued in nexx t page..

NFIG-RA02-003F/140L-300 1415 1290 1173 1760 218 600 2212 249 396
NFIG-RI02-003F/140L-300 1415 1290 1110 1665 218 600 2117 249 396
NFIG-RD02-003F/140L 1415 1290 1163 1745 218 600 2197 249 396
NFIG-RA02-004F/67L-200 1811 1686 600 900 218 600 1352 249 396
NFIG-RA02-004F/67L-300 1811 1686 600 900 218 600 1352 249 396
NFIG-RA02-004F/80L-200 1811 1686 683 1025 218 600 1477 249 396
NFIG-RA02-004F/80L-300 1811 1686 727 1090 218 600 1542 249 396
NFIG-RA02-004F/140L-200 1811 1686 1127 1690 218 600 2142 249 396
NFIG-RA02-004F/140L-300 1811 1686 1173 1760 218 600 2212 249 396
NFIG-RI02-004F/140L-300 1811 1686 1110 1665 218 600 2117 249 396
NFIG-RD02-004F/140L 1811 1686 1163 1745 218 600 2197 249 396
NFIG-RA02-005F/67L-200 2207 2082 600 900 218 600 1352 249 396
NFIG-RA02-005F/67L-300 2207 2082 600 900 218 600 1352 249 396
NFIG-RA02-005F/80L-200 2207 2082 683 1025 218 600 1477 249 396
NFIG-RA02-005F/80L-300 2207 2082 727 1090 218 600 1542 249 396
NFIG-RA02-005F/140L-200 2207 2082 1127 1690 218 600 2142 249 396
NFIG-RA02-005F/140L-300 2207 2082 1173 1760 218 600 2212 249 396
NFIG-RI02-005F/140L-300 2207 2082 1110 1665 218 600 2117 249 396
NFIG-RD02-005F/140L 2207 2082 1163 1745 218 600 2197 249 396
Double Row Floor Mounting Cylinder Rack with Manifold Support (267 Dia)
INERT GAS DOUBLE ROW FLOOR MOUNTING CYLINDER RACK DIMENSION DETAILS (Ø267 CYLINDER)
MODEL No. A B C 2/3x D D E F G H I J

NFIG-RA01-010F/67L-200 534 409 980 1470 173.5 292 800 1922 204.5 -
NFIG-RA01-010F/67L-300 534 409 1017 1526 173.5 292 800 1978 204.5 -
NFIG-RA01-010F/80L-200 534 409 1140 1710 173.5 292 800 2162 204.5 -
NFIG-RA01-010F/80L-300 534 409 1187 1780 173.5 292 800 2232 204.5 -
NFIG-RI01-010F/68L-200 534 409 1013 1520 173.5 292 800 1972 204.5 -
NFIG-RI01-010F/68L-300 534 409 1053 1580 173.5 292 800 2032 204.5 -
NFIG-RI01-010F/80L-200 534 409 1160 1740 173.5 292 800 2192 204.5 -
NFIG-RI01-010F/80L-300 534 409 1217 1825 173.5 292 800 2277 204.5 -
NFIG-RD010F/80L 534 409 1187 1780 173.5 292 800 2232 204.5 -
NFIG-RA01-020F/67L-200 841 716 980 1470 173.5 292 800 1922 204.5 307
NFIG-RA01-020F/67L-300 841 716 1017 1526 173.5 292 800 1978 204.5 307
NFIG-RA01-020F/80L-200 841 716 1140 1710 173.5 292 800 2162 204.5 307
NFIG-RA01-020F/80L-300 841 716 1187 1780 173.5 292 800 2232 204.5 307
NFIG-RI01-020F/68L-200 841 716 1013 1520 173.5 292 800 1972 204.5 307
NFIG-RI01-020F/68L-300 841 716 1053 1580 173.5 292 800 2032 204.5 307
NFIG-RI01-020F/80L-200 841 716 1160 1740 173.5 292 800 2192 204.5 307
NFIG-RI01-020F/80L-300 841 716 1217 1825 173.5 292 800 2277 204.5 307
38
NFIG-RD01-02F/80L 841 716 1187 1780 173.5 292 800 2232 204.5 307
NFIG-RA01-030F/67L-200 1148 1023 980 1470 173.5 292 800 1922 204.5 307
Page
NFIG-RA01-030F/67L-300 1148 1023 1017 1526 173.5 292 800 1978 204.5 307
NFIG-RA01-030F/80L-200 1148 1023 1140 1710 173.5 292 800 2162 204.5 307
NFIG-RA01-030F/80L-300 1148 1023 1187 1780 173.5 292 800 2232 204.5 307
NFIG-RI01-030F/68L-200 1148 1023 1013 1520 173.5 292 800 1972 204.5 307
NFIG-RI01-030F/68L-300 1148 1023 1053 1580 173.5 292 800 2032 204.5 307
NFIG-RI01-030F/80L-200 1148 1023 1160 1740 173.5 292 800 2192 204.5 307
NFIG-RI01-030F/80L-300 1148 1023 1217 1825 173.5 292 800 2277 204.5 307
NFIG-RD01-030F/80L 1148 1023 1187 1780 173.5 292 800 2232 204.5 307
NFIG-RA01-040F/67L-200 1455 1330 980 1470 173.5 292 800 1922 204.5 307
NFIG-RA01-040F/67L-300 1455 1330 1017 1526 173.5 292 800 1978 204.5 307
NFIG-RA01-040F/80L-200 1455 1330 1140 1710 173.5 292 800 2162 204.5 307
NFIG-RA01-040F/80L-300 1455 1330 1187 1780 173.5 292 800 2232 204.5 307
NFIG-RI01-040F/68L-200 1455 1330 1013 1520 173.5 292 800 1972 204.5 307
NFIG-RI01-040F/68L-300 1455 1330 1053 1580 173.5 292 800 2032 204.5 307
NFIG-RI01-040F/80L-200 1455 1330 1160 1740 173.5 292 800 2192 204.5 307
NFIG-RI01-040F/80L-300 1455 1330 1217 1825 173.5 292 800 2277 204.5 307
NFIG-RD01-040F/80L 1455 1330 1187 1780 173.5 292 800 2232 204.5 307
NFIG-RA01-050F/67L-200 1762 1637 980 1470 173.5 292 800 1922 204.5 307
NFIG-RA01-050F/67L-300 1762 1637 1017 1526 173.5 292 800 1978 204.5 307
NFIG-RA01-050F/80L-200 1762 1637 1140 1710 173.5 292 800 2162 204.5 307
NFIG-RA01-050F/80L-300 1762 1637 1187 1780 173.5 292 800 2232 204.5 307
NFIG-RI01-050F/68L-200 1762 1637 1013 1520 173.5 292 800 1972 204.5 307
NFIG-RI01-050F/68L-300 1762 1637 1053 1580 173.5 292 800 2032 204.5 307
NFIG-RI01-050F/80L-200 1762 1637 1160 1740 173.5 292 800 2192 204.5 307
NFIG-RI01-050F/80L-300 1762 1637 1217 1825 173.5 292 800 2277 204.5 307
NFIG-RD01-050F/80L 1762 1637 1187 1780 173.5 292 800 2232 204.5 307
NFIG-RA01-041F/67L-200 1455 1330 980 1470 173.5 292 800 1922 204.5 307
NFIG-RA01-041F/67L-300 1455 1330 1017 1526 173.5 292 800 1978 204.5 307
NFIG-RA01-041F/80L-200 1455 1330 1140 1710 173.5 292 800 2162 204.5 307
NFIG-RA01-041F/80L-300 1455 1330 1187 1780 173.5 292 800 2232 204.5 307
NFIG-RI01-041F/68L-200 1455 1330 1013 1520 173.5 292 800 1972 204.5 307
NFIG-RI01-041F/68L-300 1455 1330 1053 1580 173.5 292 800 2032 204.5 307
NFIG-RI01-041F/80L-200 1455 1330 1160 1740 173.5 292 800 2192 204.5 307
NFIG-RI01-041F/80L-300 1455 1330 1217 1825 173.5 292 800 2277 204.5 307
NFIG-RD01-041F/80L 1455 1330 1187 1780 173.5 292 800 2232 204.5 307
NFIG-RA01-051F/67L-200 1762 1637 980 1470 173.5 292 800 1922 204.5 307
NFIG-RA01-051F/67L-300 1762 1637 1017 1526 173.5 292 800 1978 204.5 307
NFIG-RA01-051F/80L-200 1762 1637 1140 1710 173.5 292 800 2162 204.5 307
NFIG-RA01-051F/80L-300 1762 1637 1187 1780 173.5 292 800 2232 204.5 307
NFIG-RI01-051F/68L-200 1762 1637 1013 1520 173.5 292 800 1972 204.5 307
NFIG-RI01-051F/68L-300 1762 1637 1053 1580 173.5 292 800 2032 204.5 307
NFIG-RI01-051F/80L-200 1762 1637 1160 1740 173.5 292 800 2192 204.5 307
NFIG-RI01-051F/80L-300 1762 1637 1217 1825 173.5 292 800 2277 204.5 307
NFIG-RD01-051F/80L 1762 1637 1187 1780 173.5 292 800 2232 204.5 307
Double Row Floor Mounting Cylinder Rack with Manifold Support (356 Dia)
Channel
100x50x5
39 Page

INERT GAS DOUBLE ROW FLOOR MOUNTING CYLINDER RACK DIMENSION DETAILS (Ø356 CYLINDER)
C
MODEL No. A B D E F G H I J
2/3x D
NFIG-RA02-010F/67L-200 623 498 600 900 218 381 985 1352 249 -
NFIG-RA02-010F/67L-300 623 498 600 900 218 381 985 1352 249 -
NFIG-RA02-010F/80L-200 623 498 683 1025 218 381 985 1477 249 -
NFIG-RA02-010F/80L-300 623 498 727 1090 218 381 985 1542 249 -
NFIG-RA02-010F/140L-200 623 498 1127 1690 218 381 985 2142 249 -
NFIG-RA02-010F/140L-300 623 498 1173 1760 218 381 985 2212 249 -
NFIG-RI02-010F/140L-300 623 498 1110 1665 218 381 985 2117 249 -
NFIG-RD02-010F/140L 623 498 1163 1745 218 381 985 2197 249 -
NFIG-RA02-020F/67L-200 1019 894 600 900 218 381 985 1352 249 396
NFIG-RA02-020F/67L-300 1019 894 600 900 218 381 985 1352 249 396
NFIG-RA02-020F/80L-200 1019 894 683 1025 218 381 985 1477 249 396
NFIG-RA02-020F/80L-300 1019 894 727 1090 218 381 985 1542 249 396
NFIG-RA02-020F/140L-200 1019 894 1127 1690 218 381 985 2142 249 396
NFIG-RA02-020F/140L-300 1019 894 1173 1760 218 381 985 2212 249 396
NFIG-RI02-020F/140L-300 1019 894 1110 1665 218 381 985 2117 249 396
NFIG-RD02-020F/140L 1019 894 1745 1665 218 381 985 2117 249 396
NFIG-RA02-030F/67L-200 1415 1290 600 900 218 381 985 1352 249 396
NFIG-RA02-030F/67L-300 1415 1290 600 900 218 381 985 1352 249 396
NFIG-RA02-030F/80L-200 1415 1290 683 1025 218 381 985 1477 249 396
NFIG-RA02-030F/80L-300 1415 1290 727 1090 218 381 985 1542 249 396
NFIG-RA02-030F/140L-200 1415 1290 1127 1690 218 381 985 2142 249 396
NFIG-RA02-030F/140L-300 1415 1290 1173 1760 218 381 985 2212 249 396
NFIG-RI02-030F/140L-300 1415 1290 1110 1665 218 381 985 2117 249 396
NFIG-RD02-030F/140L 1415 1290 1163 1745 218 381 985 2197 249 396
NFIG-RA02-040F/67L-200 1811 1686 600 900 218 381 985 1352 249 396
NFIG-RA02-040F/67L-300 1811 1686 600 900 218 381 985 1352 249 396
NFIG-RA02-040F/80L-200 1811 1686 683 1025 218 381 985 1477 249 396
NFIG-RA02-040F/80L-300 1811 1686 727 1090 218 381 985 1542 249 396
NFIG-RA02-040F/140L-200 1811 1686 1127 1690 218 381 985 2142 249 396
NFIG-RA02-040F/140L-300 1811 1686 1173 1760 218 381 985 2212 249 396
NFIG-RI02-040F/140L-300 1811 1686 1110 1665 218 381 985 2117 249 396
NFIG-RD02-040F/140L 1811 1686 1163 1745 218 381 985 2197 249 396
NFIG-RA02-050F/67L-200 2207 2082 600 900 218 381 985 1352 249 396
NFIG-RA02-050F/67L-300 2207 2082 600 900 218 381 985 1352 249 396
NFIG-RA02-050F/80L-200 2207 2082 683 1025 218 381 985 1477 249 396
NFIG-RA02-050F/80L-300 2207 2082 727 1090 218 381 985 1542 249 396
NFIG-RA02-050F/140L-200 2207 2082 1127 1690 218 381 985 2142 249 396
NFIG-RA02-050F/140L-300 2207 2082 1173 1760 218 381 985 2212 249 396
NFIG-RI02-050F/140L-300 2207 2082 1110 1665 218 381 985 2117 249 396
NFIG-RD02-050F/140L 2207 2082 1163 1745 218 381 985 2197 249 396
NFIG-RA02-041F/67L-200 1811 1686 600 900 218 381 985 1352 249 396
NFIG-RA02-041F/67L-300 1811 1686 600 900 218 381 985 1352 249 396
NFIG-RA02-041F/80L-200 1811 1686 683 1025 218 381 985 1477 249 396
NFIG-RA02-041F/80L-300 1811 1686 727 1090 218 381 985 1542 249 396
NFIG-RA02-041F/140L-200 1811 1686 1127 1690 218 381 985 2142 249 396
NFIG-RA02-041F/140L-300 1811 1686 1173 1760 218 381 985 2212 249 396
NFIG-RI02-041F/140L-300 1811 1686 1110 1665 218 381 985 2117 249 396
NFIG-RD02-041F/140L 1811 1686 1163 1745 218 381 985 2197 249 396
NFIG-RA02-051F/67L-200 2207 2082 600 900 218 381 985 1352 249 396
NFIG-RA02-051F/67L-300 2207 2082 600 900 218 381 985 1352 249 396
NFIG-RA02-051F/80L-200 2207 2082 683 1025 218 381 985 1477 249 396
NFIG-RA02-051F/80L-300 2207 2082 727 1090 218 381 985 1542 249 396
40
NFIG-RA02-051F/140L-200 2207 2082 1127 1690 218 381 985 2142 249 396
NFIG-RA02-051F/140L-300 2207 2082 1173 1760 218 381 985 2212 249 396
NFIG-RI02-051F/140L-300 2207 2082 1110 1665 218 381 985 2117 249 396
Page
NFIG-RD02-051F/140L 2207 2082 1163 1745 218 381 985 2197 249 396

Singal Row Wall Mounting Cylinder Rack with Manifold Support (267 Dia)
INERT GAS SINGLE ROW WALL MOUNTING CYLINDER RACK DIMENSION DETAILS (Ø267 CYLINDER)
MODEL No. A C 2/3x D D E G H I J

NFIG-RA01-001W/67L-200 267 980 1470 173.5 410 1922 133.5 -
NFIG-RA01-001W/67L-300 267 1017 1526 173.5 410 1978 133.5 -
NFIG-RA01-001W/80L-200 267 1140 1710 173.5 410 2162 133.5 -
NFIG-RA01-001W/80L-300 267 1187 1780 173.5 410 2232 133.5 -
NFIG-RI01-001W/68L-200 267 1013 1520 173.5 410 1972 133.5 -
NFIG-RI01-001W/68L-300 267 1053 1580 173.5 410 2032 133.5 -
NFIG-RI01-001W/80L-200 267 1160 1740 173.5 410 2192 133.5 -
NFIG-RI01-001W/80L-300 267 1217 1825 173.5 410 2277 133.5 -
NFIG-RD01-001W/80L 267 1187 1780 173.5 410 2232 133.5 -
NFIG-RA01-002W/67L-200 574 980 1470 173.5 410 1922 133.5 307
NFIG-RA01-002W/67L-300 574 1017 1526 173.5 410 1978 133.5 307
NFIG-RA01-002W/80L-200 574 1140 1710 173.5 410 2162 133.5 307
NFIG-RA01-002W/80L-300 574 1187 1780 173.5 410 2232 133.5 307
NFIG-RI01-002W/68L-200 574 1013 1520 173.5 410 1972 133.5 307
NFIG-RI01-002W/68L-300 574 1053 1580 173.5 410 2032 133.5 307
NFIG-RI01-002W/80L-200 574 1160 1740 173.5 410 2192 133.5 307
NFIG-RI01-002W/80L-300 574 1217 1825 173.5 410 2277 133.5 307
NFIG-RD01-002W/80L 574 1187 1780 173.5 410 2232 133.5 307
NFIG-RA01-003W/67L-200 881 980 1470 173.5 410 1922 133.5 307
NFIG-RA01-003W/67L-300 881 1017 1526 173.5 410 1978 133.5 307
NFIG-RA01-003W/80L-200 881 1140 1710 173.5 410 2162 133.5 307
NFIG-RA01-003W/80L-300 881 1187 1780 173.5 410 2232 133.5 307
NFIG-RI01-003W/68L-200 881 1013 1520 173.5 410 1972 133.5 307
41
NFIG-RI01-003W/68L-300 881 1053 1580 173.5 410 2032 133.5 307

NFIG-RI01-003W/80L-200 881 1160 1740 173.5 410 2192 133.5 307
Page
NFIG-RI01-003W/80L-300 881 1217 1825 173.5 410 2277 133.5 307

NFIG-RD01-003W/80L 881 1187 1780 173.5 410 2232 133.5 307

NFIG-RA01-004W/67L-200 1188 980 1470 173.5 410 1922 133.5 307
NFIG-RA01-004W/67L-300 1188 1017 1526 173.5 410 1978 133.5 307
NFIG-RA01-004W/80L-200 1188 1140 1710 173.5 410 2162 133.5 307
NFIG-RA01-004W/80L-300 1188 1187 1780 173.5 410 2232 133.5 307
NFIG-RI01-004W/68L-200 1188 1013 1520 173.5 410 1972 133.5 307
NFIG-RI01-004W/68L-300 1188 1053 1580 173.5 410 2032 133.5 307
NFIG-RI01-004W/80L-200 1188 1160 1740 173.5 410 2192 133.5 307
NFIG-RI01-004W/80L-300 1188 1217 1825 173.5 410 2277 133.5 307
NFIG-RD01-004W/80L 1188 1187 1780 173.5 410 2232 133.5 307
NFIG-RA01-005W/67L-200 1495 980 1470 173.5 410 1922 133.5 307
NFIG-RA01-005W/67L-300 1495 1017 1526 173.5 410 1978 133.5 307
NFIG-RA01-005W/80L-200 1495 1140 1710 173.5 410 2162 133.5 307
NFIG-RA01-005W/80L-300 1495 1187 1780 173.5 410 2232 133.5 307
NFIG-RI01-005W/68L-200 1495 1013 1520 173.5 410 1972 133.5 307
NFIG-RI01-005W/68L-300 1495 1053 1580 173.5 410 2032 133.5 307
NFIG-RI01-005W/80L-200 1495 1160 1740 173.5 410 2192 133.5 307
NFIG-RI01-005W/80L-300 1495 1217 1825 173.5 410 2277 133.5 307
NFIG-RD01-005W/80L 1495 1187 1780 173.5 410 2232 133.5 307
Singal Row Wall Mounting Cylinder Rack with Manifold Support (356 Dia)
INERT GAS SINGLE ROW WALL MOUNTING CYLINDER RACK DIMENSION DETAILS (Ø356 CYLINDER)
C
MODEL No. A D E G H I J
2/3x D
NFIG-RA02-001W/67L-200 356 600 900 218 500 1352 178 -
NFIG-RA02-001W/67L-300 356 600 900 218 500 1352 178 -
NFIG-RA02-001W/80L-200 356 683 1025 218 500 1477 178 -
NFIG-RA02-001W/80L-300 356 727 1090 218 500 1542 178 -
NFIG-RA02-001W/140L-200 356 1127 1690 218 500 2142 178 -
NFIG-RA02-001W/140L-300 356 1173 1760 218 500 2212 178 -
NFIG-RI02-001W/140L-300 356 1110 1665 218 500 2117 178 -
NFIG-RD02-001W/140L 356 1163 1745 218 500 2197 178 -
NFIG-RA02-002W/67L-200 752 600 900 218 500 1352 178 396
42
NFIG-RA02-002W/67L-300 752 600 900 218 500 1352 178 396

NFIG-RA02-002W/80L-200 752 683 1025 218 500 1477 178 396
Page
NFIG-RA02-002W/80L-300 752 727 1090 218 500 1542 178 396

NFIG-RA02-002W/140L-200 752 1127 1690 218 500 2142 178 396
NFIG-RA02-002W/140L-300 752 1173 1760 218 500 2212 178 396
NFIG-RI02-002W/140L-300 752 1110 1665 218 500 2117 178 396
NFIG-RD02-002W/140L 752 1163 1745 218 500 2197 178 396
NFIG-RA02-003W/67L-200 1148 600 900 218 500 1352 178 396
NFIG-RA02-003W/67L-300 1148 600 900 218 500 1352 178 396
NFIG-RA02-003W/80L-200 1148 683 1025 218 500 1477 178 396
NFIG-RA02-003W/80L-300 1148 727 1090 218 500 1542 178 396
NFIG-RA02-003W/140L-200 1148 1127 1690 218 500 2142 178 396
NFIG-RA02-003W/140L-300 1148 1173 1760 218 500 2212 178 396
NFIG-RI02-003W/140L-300 1148 1110 1665 218 500 2117 178 396
NFIG-RD02-003W/140L 1148 1163 1745 218 500 2197 178 396
NFIG-RA02-004W/67L-200 1544 600 900 218 500 1352 178 396
NFIG-RA02-004W/67L-300 1544 600 900 218 500 1352 178 396
NFIG-RA02-004W/80L-200 1544 683 1025 218 500 1477 178 396
NFIG-RA02-004W/80L-300 1544 727 1090 218 500 1542 178 396
NFIG-RA02-004W/140L-200 1544 1127 1690 218 500 2142 178 396
NFIG-RA02-004W/140L-300 1544 1173 1760 218 500 2212 178 396
NFIG-RI02-004W/140L-300 1544 1110 1665 218 500 2117 178 396
NFIG-RD02-004W/140L 1544 1163 1745 218 500 2197 178 396
NFIG-RA02-005W/67L-200 1940 600 900 218 500 1352 178 396
NFIG-RA02-005W/67L-300 1940 600 900 218 500 1352 178 396
NFIG-RA02-005W/80L-200 1940 683 1025 218 500 1477 178 396
NFIG-RA02-005W/80L-300 1940 727 1090 218 500 1542 178 396
NFIG-RA02-005W/140L-200 1940 1127 1690 218 500 2142 178 396
NFIG-RA02-005W/140L-300 1940 1173 1760 218 500 2212 178 396
NFIG-RI02-005W/140L-300 1940 1110 1665 218 500 2117 178 396
NFIG-RD02-005W/140L 1940 1163 1745 218 500 2197 178 396
Double Row Wall Mounting Cylinder Rack with Manifold Support (267 Dia)
43 Page

INERT GAS DOUBLE ROW WALL MOUNTING CYLINDER RACK DIMENSION DETAILS ( Ø267 CYLINDER)
C
MODEL No. A D E F G H I J
2/3x D
NFIG-RA01-010W/67L-200 267 980 1470 173.5 292 700 1922 133.5 -
NFIG-RA01-010W/67L-300 267 1017 1526 173.5 292 700 1978 133.5 -
NFIG-RA01-010W/80L-200 267 1140 1710 173.5 292 700 2162 133.5 -
NFIG-RA01-010W/80L-300 267 1187 1780 173.5 292 700 2232 133.5 -
NFIG-RI01-010W/68L-200 267 1013 1520 173.5 292 700 1972 133.5 -
NFIG-RI01-010W/68L-300 267 1053 1580 173.5 292 700 2032 133.5 -
NFIG-RI01-010W/80L-200 267 1160 1740 173.5 292 700 2192 133.5 -
NFIG-RI01-010W/80L-300 267 1217 1825 173.5 292 700 2277 133.5 -
NFIG-RD01-010W/80L 267 1187 1780 173.5 292 700 2232 133.5 -
NFIG-RA01-020W/67L-200 574 980 1470 173.5 292 700 1922 133.5 307
NFIG-RA01-020W/67L-300 574 1017 1526 173.5 292 700 1978 133.5 307
NFIG-RA01-020W/80L-200 574 1140 1710 173.5 292 700 2162 133.5 307
NFIG-RA01-020W/80L-300 574 1187 1780 173.5 292 700 2232 133.5 307
NFIG-RI01-020W/68L-200 574 1013 1520 173.5 292 700 1972 133.5 307
NFIG-RI01-020FW/68L-300 574 1053 1580 173.5 292 700 2032 133.5 307
NFIG-RI01-020W/80L-200 574 1160 1740 173.5 292 700 2192 133.5 307
NFIG-RI01-020W/80L-300 574 1217 1825 173.5 292 700 2277 133.5 307
NFIG-RD01-020W/80L 574 1187 1780 173.5 292 700 2232 133.5 307
NFIG-RA01-030W/67L-200 881 980 1470 173.5 292 700 1922 133.5 307
NFIG-RA01-030W/67L-300 881 1017 1526 173.5 292 700 1978 133.5 307
NFIG-RA01-030W/80L-200 881 1140 1710 173.5 292 700 2162 133.5 307
NFIG-RA01-030W/80L-300 881 1187 1780 173.5 292 700 2232 133.5 307
NFIG-RI01-030W/68L-200 881 1013 1520 173.5 292 700 1972 133.5 307
NFIG-RI01-030W/68L-300 881 1053 1580 173.5 292 700 2032 133.5 307
NFIG-RI01-030W/80L-200 881 1160 1740 173.5 292 700 2192 133.5 307
NFIG-RI01-030W/80L-300 881 1217 1825 173.5 292 700 2277 133.5 307
NFIG-RD01-030W/80L 881 1187 1780 173.5 292 700 2232 133.5 307
NFIG-RA01-040W/67L-200 1188 980 1470 173.5 292 700 1922 133.5 307
NFIG-RA01-040W/67L-300 1188 1017 1526 173.5 292 700 1978 133.5 307
NFIG-RA01-040W/80L-200 1188 1140 1710 173.5 292 700 2162 133.5 307
NFIG-RA01-040W/80L-300 1188 1187 1780 173.5 292 700 2232 133.5 307
NFIG-RI01-040W/68L-200 1188 1013 1520 173.5 292 700 1972 133.5 307
NFIG-RI01-040W/68L-300 1188 1053 1580 173.5 292 700 2032 133.5 307
NFIG-RI01-040W/80L-200 1188 1160 1740 173.5 292 700 2192 133.5 307
NFIG-RI01-040W/80L-300 1188 1217 1825 173.5 292 700 2277 133.5 307
NFIG-RD01-040W/80L 1188 1187 1780 173.5 292 700 2232 133.5 307
NFIG-RA01-050W/67L-200 1495 980 1470 173.5 292 700 1922 133.5 307
NFIG-RA01-050W/67L-300 1495 1017 1526 173.5 292 700 1978 133.5 307
NFIG-RA01-050W/80L-200 1495 1140 1710 173.5 292 700 2162 133.5 307
NFIG-RA01-050W/80L-300 1495 1187 1780 173.5 292 700 2232 133.5 307
NFIG-RI01-050W/68L-200 1495 1013 1520 173.5 292 700 1972 133.5 307
NFIG-RI01-050W/68L-300 1495 1053 1580 173.5 292 700 2032 133.5 307
NFIG-RI01-050W/80L-200 1495 1160 1740 173.5 292 700 2192 133.5 307
NFIG-RI01-050W/80L-300 1495 1217 1825 173.5 292 700 2277 133.5 307
NFIG-RD01-050W/80L 1495 1187 1780 173.5 292 700 2232 133.5 307
NFIG-RA01-041W/67L-200 1188 980 1470 173.5 292 700 1922 133.5 307
NFIG-RA01-041W/67L-300 1188 1017 1526 173.5 292 700 1978 133.5 307
NFIG-RA01-041W/80L-200 1188 1140 1710 173.5 292 700 2162 133.5 307
NFIG-RA01-041W/80L-300 1188 1187 1780 173.5 292 700 2232 133.5 307

44
Page

NFIG-RI01-041W/68L-300 1188 1053 1580 173.5 292 700 2032 133.5 307
NFIG-RI01-041W/80L-200 1188 1160 1740 173.5 292 700 2192 133.5 307
NFIG-RI01-041W/80L-300 1188 1217 1825 173.5 292 700 2277 133.5 307
NFIG-RD01-041W/80L 1188 1187 1780 173.5 292 700 2232 133.5 307
NFIG-RA01-051W/67L-200 1495 980 1470 173.5 292 700 1922 133.5 307
NFIG-RA01-051W/67L-300 1495 1017 1526 173.5 292 700 1978 133.5 307
NFIG-RA01-051W/80L-200 1495 1140 1710 173.5 292 700 2162 133.5 307
NFIG-RA01-051W/80L-300 1495 1187 1780 173.5 292 700 2232 133.5 307
NFIG-RI01-051W/68L-200 1495 1013 1520 173.5 292 700 1972 133.5 307
NFIG-RI01-051W/68L-300 1495 1053 1580 173.5 292 700 2032 133.5 307
NFIG-RI01-051W/80L-200 1495 1160 1740 173.5 292 700 2192 133.5 307
NFIG-RI01-051W/80L-300 1495 1217 1825 173.5 292 700 2277 133.5 307
NFIG-RD01-051W/80L 1495 1187 1780 173.5 292 700 2232 133.5 307
Double Row Wall Mounting Cylinder Rack with Manifold Support (356 Dia)
45 Page

INERT GAS DOUBLE ROW WALL MOUNTING CYLINDER RACK DIMENSION DETAILS (Ø356 CYLINDER)
C
MODEL No. A D E F G H I J
2/3x D
NFIG-RA02-010W/67L-200 356 600 900 218 381 885 1352 178 -
NFIG-RA02-010W/67L-300 356 600 900 218 381 885 1352 178 -
NFIG-RA02-010W/80L-200 356 683 1025 218 381 885 1477 178 -
NFIG-RA02-010W/80L-300 356 727 1090 218 381 885 1542 178 -
NFIG-RA02-010W/140L-200 356 1127 1690 218 381 885 2142 178 -
NFIG-RA02-010W/140L-300 356 1173 1760 218 381 885 2212 178 -
NFIG-RI02-010W/140L-300 356 1110 1665 218 381 885 2117 178 -
NFIG-RD02-010W/140L 356 1163 1745 218 381 885 2197 178 -
NFIG-RA02-020W/67L-200 752 600 900 218 381 885 1352 178 396
NFIG-RA02-020W/67L-300 752 600 900 218 381 885 1352 178 396
NFIG-RA02-020W/80L-200 752 683 1025 218 381 885 1477 178 396
NFIG-RA02-020W/80L-300 752 727 1090 218 381 885 1542 178 396
NFIG-RA02-020W/140L-200 752 1127 1690 218 381 885 2142 178 396
NFIG-RA02-020W/140L-300 752 1173 1760 218 381 885 2212 178 396
NFIG-RI02-020W/140L-300 752 1110 1665 218 381 885 2117 178 396
NFIG-RD02-020W/140L 752 1163 1745 218 381 885 2197 178 396
NFIG-RA02-030W/67L-200 1148 600 900 218 381 885 1352 178 396
NFIG-RA02-030W/67L-300 1148 600 900 218 381 885 1352 178 396
NFIG-RA02-030W/80L-200 1148 683 1025 218 381 885 1477 178 396
NFIG-RA02-030W/80L-300 1148 727 1090 218 381 885 1542 178 396
NFIG-RA02-030W/140L-200 1148 1127 1690 218 381 885 2142 178 396
NFIG-RA02-030W/140L-300 1148 1173 1760 218 381 885 2212 178 396
NFIG-RI02-030W/140L-300 1148 1110 1665 218 381 885 2117 178 396
NFIG-RD02-030W/140L 1148 1163 1745 218 381 885 2197 178 396
NFIG-RA02-040W/67L-200 1544 600 900 218 381 885 1352 178 396
NFIG-RA02-040W/67L-300 1544 600 900 218 381 885 1352 178 396
NFIG-RA02-040W/80L-200 1544 683 1025 218 381 885 1477 178 396
NFIG-RA02-040W/80L-300 1544 727 1090 218 381 885 1542 178 396
NFIG-RA02-040W/140L-200 1544 1127 1690 218 381 885 2142 178 396
NFIG-RA02-040W/140L-300 1544 1173 1760 218 381 885 2212 178 396
NFIG-RI02-040W/140L-300 1544 1110 1665 218 381 885 2117 178 396
NFIG-RD02-040W/140L 1544 1163 1745 218 381 885 2197 178 396
NFIG-RA02-050W/67L-200 1940 600 900 218 381 885 1352 178 396
NFIG-RA02-050W/67L-300 1940 600 900 218 381 885 1352 178 396
NFIG-RA02-050W/80L-200 1940 683 1025 218 381 885 1477 178 396
NFIG-RA02-050W/80L-300 1940 727 1090 218 381 885 1542 178 396
NFIG-RA02-050W/140L-200 1940 1127 1690 218 381 885 2142 178 396
NFIG-RA02-050W/140L-300 1940 1173 1760 218 381 885 2212 178 396
NFIG-RI02-050W/140L-300 1940 1110 1665 218 381 885 2117 178 396
NFIG-RD02-050W/140L 1940 1163 1745 218 381 885 2197 178 396
NFIG-RA02-041W/67L-200 1544 600 900 218 381 885 1352 178 396
NFIG-RA02-041W/67L-300 1544 600 900 218 381 885 1352 178 396
NFIG-RA02-041W/80L-200 1544 683 1025 218 381 885 1477 178 396
NFIG-RA02-041W/80L-300 1544 727 1090 218 381 885 1542 178 396
NFIG-RA02-041W/140L-200 1544 1127 1690 218 381 885 2142 178 396
NFIG-RA02-041W/140L-300 1544 1173 1760 218 381 885 2212 178 396
NFIG-RI02-041W/140L-300 1544 1110 1665 218 381 885 2117 178 396
NFIG-RD02-041W/140L 1544 1163 1745 218 381 885 2197 178 396
NFIG-RA02-051W/67L-200 1940 600 900 218 381 885 1352 178 396
NFIG-RA02-051W/67L-300 1940 600 900 218 381 885 1352 178 396
NFIG-RA02-051W/80L-200 1940 683 1025 218 381 885 1477 178 396
NFIG-RA02-051W/80L-300 1940 727 1090 218 381 885 1542 178 396
NFIG-RA02-051W/140L-200 1940 1127 1690 218 381 885 2142 178 396
46
NFIG-RA02-051W/140L-300 1940 1173 1760 218 381 885 2212 178 396
NFIG-RI02-051W/140L-300 1940 1110 1665 218 381 885 2117 178 396
Page
NFIG-RD02-051W/140L 1940 1163 1745 218 381 885 2197 178 396

Floor Mounting Cylinder Rack (267 Dia)
MODEL No. MODEL No. MODEL No.

NFIG-RA01-001F/67L-200 NFIG-RA01-010F/67L-200 NFIG-RA01-002F/67L-200
NFIG-RA01-001F/80L-300
NFIG-RA01-010F/80L-300 NFIG-RA01-002F/80L-300
NFIG-RI01-001F/68L-200
NFIG-RI01-010F/68L-200 NFIG-RI01-002F/68L-200
NFIG-RI01-001F/68L-300
NFIG-RI01-001F/80L-200
NFIG-RI01-001F/80L-300
NFIG-RD01-001F/80L NFIG-RI01-010F/80L-300 NFIG-RI01-002F/80L-300
NFIG-RD01-010F/80L NFIG-RD01-002F/80L

NFIG-RI01-020F/68L-200 NFIG-RI01-003F/68L-200 NFIG-RI01-030F/68L-200
NFIG-RI01-030F/68L-300
NFIG-RI01-030F/80L-200
NFIG-RD01-003F/80L NFIG-RI01-030F/80L-300
NFIG-RD01-020F/80L
NFIG-RD01-030F/80L
MODEL No.
MODEL No. MODEL No. NFIG-RA01-005F/67L-200
NFIG-RA01-004F/80L-300 NFIG-RA01-040F/80L-300 NFIG-RI01-005F/68L-200
NFIG-RI01-004F/68L-300
NFIG-RI01-004F/80L-200
NFIG-RD01-040F/80L

47

NFIG-RD01-050F/80L NFIG-RD01-041F/80L NFIG-RD01-051F/80L
Page

Floor Mounting Cylinder Rack (356 Dia)

NFIG-RA02-001F/67L-200
NFIG-RA02-001F/67L-300
NFIG-RA02-001F/80L-200
NFIG-RA02-001F/80L-300
NFIG-RA02-001F/140L-200
NFIG-RA02-001F/140L-300
NFIG-RI02-001F/140L-300
NFIG-RD02-001F/140L
MODEL No. MODEL No.

MODEL No.
NFIG-RA02-030F/67L-200
NFIG-RI02-020F/67L-200 NFIG-RA02-003F/67L-200
NFIG-RA02-030F/67L-300
NFIG-RA02-030F/80L-200
NFIG-RA02-030F/80L-300
NFIG-RA02-030F/140L-200
NFIG-RA02-030F/140L-300
NFIG-RI02-030F/140L-300
NFIG-RD02-020F/140L NFIG-RD02-003F/140L NFIG-RD02-030F/140L

NFIG-RA02-004F/67L-200
NFIG-RA02-004F/67L-300
NFIG-RA02-004F/80L-200
NFIG-RA02-004F/80L-300
NFIG-RA02-004F/140L-200
NFIG-RA02-004F/140L-300
NFIG-RI02-004F/140L-300
NFIG-RD02-004F/140L

NFIG-RA02-051F/80L-200
48
NFIG-RA02-051F/80L-300
NFIG-RA02-051F/140L-200
NFIG-RA02-051F/140L-300
Page
NFIG-RI02-051F/140L-300
NFIG-RD02-051F/140L

Wall Mounting Cylinder Rack (267 Dia)
MODEL No.
MODEL No. MODEL No.
NFIG-RA01-001W/67L-200
NFIG-RA01-010W/67L-200 NFIG-RA01-002W/67L-200
NFIG-RA01-001W/67L-300
NFIG-RA01-001W/80L-200
NFIG-RA01-001W/80L-300
NFIG-RI01-001W/68L-200 NFIG-RI01-010W/68L-200 NFIG-RI01-002W/68L-200
NFIG-RI01-001W/68L-300
NFIG-RI01-010W/68L-300 NFIG-RI01-002W/68L-300
NFIG-RI01-001W/80L-200
NFIG-RI01-001W/80L-300
NFIG-RD01-001W/80L NFIG-RI01-010W/80L-300 NFIG-RI01-002W/80L-300
NFIG-RD01-010W/80L NFIG-RD01-002W/80L

NFIG-RA01-020W/67L-200
NFIG-RA01-020FW/67L-300
NFIG-RA01-020W/80L-200
NFIG-RA01-020W/80L-300
NFIG-RI01-020W/68L-200
NFIG-RI01-020FW/68L-300
NFIG-RI01-020W/80L-200
NFIG-RI01-020FW/80L-300 NFIG-RD01-003W/80L NFIG-RD01-030W/80L
NFIG-RD01-020FW/80L

NFIG-RA01-004W/67L-200 NFIG-RA01-040W/67L-200 NFIG-RA01-005W/67L-200
NFIG-RD01-004W/80L NFIG-RD01-040W/80L NFIG-RD01-005W/80L

49

Page


Wall Mounting Cylinder Rack (356 Dia)
MODEL No.
MODEL No. MODEL No.
NFIG-RA02-001W/67L-200
NFIG-RA02-001W/67L-300
NFIG-RA02-001W/80L-200
NFIG-RI02-001W/140L-300 NFIG-RA02-010W/140L-300 NFIG-RA02-002W/140L-300



50

NFIG-RI02-050W/140L-300 NFIG-RD02-041W/140L NFIG-RI02-051W/140L-300
Page
NFIG-RD02-050W/140L NFIG-RD02-051W/140L

Rack Assembly Model Selection Component Descriptions
NFIG-RXXX-XXXX/XXL-XXX
300- SYSTEM PRESSURE
200- SYSTEM PRESSURE
67L- CYLINDER CAPACITY (ISO 9809-2 -CYLINDER TYPE)

68L- CYLINDER CAPACITY (IS 7285-2 -CYLINDER TYPE)
80L- CYLINDER CAPACITY (DOT UN -CYLINDER TYPE)
140L- CYLINDER CAPACITY (DOT UN -CYLINDER TYPE)
051W- NINE CYLINDER DOUBLE ROW WALL MOUNTING
041W- SEVEN CYLINDER DOUBLE ROW WALL MOUNTING
050W- TEN CYLINDER DOUBLE ROW WALL MOUNTING
005W- FIVE CYLINDER SINGLE ROW WALL MOUNTING
040W- EIGHT CYLINDER DOUBLE ROW WALL MOUNTING
004W- FOUR CYLINDER SINGLE ROW WALL MOUNTING
030W- SIX CYLINDER DOUBLE ROW WALL MOUNTING
003W- THREE CYLINDER SINGLE ROW WALL MOUNTING

020W- FOUR CYLINDER DOUBLE ROW WALL MOUNTING
002W- TWO CYLINDER SINGLE ROW WALL MOUNTING
010W- TWO CYLINDER DOUBLE ROW WALL MOUNTING
001W- SINGLE CYLINDER WALL MOUNTING
051F- NINE CYLINDER DOUBLE ROW FLOOR MOUNTING
041F- SEVEN CYLINDER DOUBLE ROW FLOOR MOUNTING
050F- TEN CYLINDER DOUBLE ROW FLOOR MOUNTING
005F- FIVE CYLINDER SINGLE ROW FLOOR MOUNTING
040F- EIGHT CYLINDER DOUBLE ROW FLOOR MOUNTING
004F- FOUR CYLINDER SINGLE ROW FLOOR MOUNTING
030F- SIX CYLINDER DOUBLE ROW FLOOR MOUNTING
003F- THREE CYLINDER SINGLE ROW FLOOR MOUNTING
020F- FOUR CYLINDER DOUBLE ROW FLOOR MOUNTING
002F- TWO CYLINDER SINGLE ROW FLOOR MOUNTING
010F- TWO CYLINDER DOUBLE ROW FLOOR MOUNTING
001F- SINGLE CYLINDER FLOOR MOUNTING

I - IS 7285-2 (CYLINDER TYPE)
51
A - ISO 9809-2 (CYLINDER TYPE)

D - DOT UN (CYLINDER TYPE)
Page
02- 356 SIZE CYLINDER

01- 267 SIZE CYLINDER
Dimensions of UN ISO 9809-2 cylinders are similar for a particualr capacity irrespective of its working pressure.

3.3. Discharge Valve
Technical Data
Part number B04801218 -NF B04802020 -NF
Connection for release device M42 x 1.5 M42 x 1.5
W28.8 x 14TPI W28.8 x 14TPI
Inlet connection (25E EN ISO 113631- 1) (25E EN ISO 113631- 1)
Discharge port W21.8 x 1/14” DIN 477 W21.8 x 1/14” DIN 477
Burst disc 300 bar 450 bar
Port for pilot hose G 1/8” G 1/8”
Monitoring port M10 x 1 M10 x 1
Working pressure 200 bar 300 bar
Outlet orifice size 12 mm 12 mm
Flow rate Kv = 2.66 / Cv = 3.09 Kv = 2.66 / Cv = 3.09
Operating pressure 200 bar at 15°C 300 bar at 15°C
Leak rate at 20 bar to 200 bar 10-4 mbar l/s 10-4 mbar l/s
Max. 200 Nm with 3 layers of Max. 200 Nm with 3 layers of
Torque moment
PTFE tape (EN 751-3) PTFE tape (EN 751-3)
Material discharge valve Brass Brass
2010/35/EU 2010/35/EU
Conformity
89/106 ECC - CPR 89/106 ECC - CPR
Connection for release device

M42 x 1.5
Port for pilot hose

Discharge port
W21.8 x 1/14 DIN 477
Monitoring port (for a pressure

Burst disc gauge with an integrated pressure
300 bar (200 bar version) switch)
450 bar (300 bar version)
Cylinder connection
25 E EN ISO11363-1
Outlet safety plug
52 Page

The Cylinder head valve shall be pressure seat type valve.

The head valve is available in two different valves for both
The solenoid operated head valve can be operated by electric

actuator and manual.
Technical Data
Part number B04390031-NF* B04390054-NF*
Operating Voltage 24V DC 12V DC
Material Brass
Inlet connection W28.8 x 14TPI (25E ENISO 113631 - 1)
Test Pressure 300 bar
Port for Pilot Hose G1/8”
Orifice size 12 mm
Flow Rate Kv=2.66;; Cv=3.09
* Used on Pilot Actuators and limited for UL Listed Systems only
3.3.1. Constant Flow and Pressure Discharge Regulator

Technical Data
Part number B08400003 - NF / B08401000-NF*
Inlet connection W21.8 x 1/14” DIN 477
Outlet connection W21.8 x 1/14” DIN 477
Nominal inlet pressure 200 / 300 bar
Maximum inlet pressure 360 bar
Inlet orifice size 12 mm
Static outlet pressure 60 bar
Dynamic outlet pressure see chart below
Material Brass B08400003-NF
53 Page

The constant flow and pressure discharge regulator modulates the

discharge pressure to a constant pressure, which still delivers the
extinguishing agent within 60 seconds or 120 seconds (depending
on the kind of Class fire), but with significant performance and cost
benefits. It prevents discharge freeze-up and explosive force of
discharge. Low-pressure manifolds and pipework can be used -
that means lower costs.
After a system discharge, no reconditioning of the constant flow
and pressure discharge regulator is necessary. Functional tests
are possible even while the system is armed.
The constant flow and pressure discharge regulator is screwed B08401000-NF
with a gasket on the discharge port of the discharge valve.
3.3.2. Gasket
Technical Data
Part number 024100104-NF
Working pressure 360 bar at 20°C
Material PA 6
The gasket is used in between the connection of the constant flow
and pressure discharge regulator to the discharge port of the
discharge valve.
54 Page

3.3.3. Pressure Gauge
The pressure gauge measures the pressure in the cylinder. It is equipped with an integrated pressure switch to
supervise the loss of pressure in the cylinder. A separate 200 bar or 300 bar pressure gauge is used for each inert
gas.
Each valve must be equipped with a pressure gauge. The pressure gauge is connected to the monitoring port of the
valve.
Wiring Diagram
NC
Not for use
Not for use
3.3.3.1. Pressure Gauge for IG01 3.3.3.2. Pressure Gauge for IG100
Technical Data Technical Data
Part number Connection Working pressure Part number Connection Working pressure
029720221- NF M10 x 1 200 bar 029720219-NF M10 x 1 200 bar
029720217-NF M10 x 1 300 bar 029720215-NF M10 x 1 300 bar
3.3.3.3. Pressure Gauge for IG55 3.3.3.4. Pressure Gauge for IG541
Technical Data Technical Data
55
Part number Connection Working pressure Part number Connection Working pressure
Page
029720220- NF M10 x 1 200 bar 029720222-NF M10 x 1 200 bar

029720216-NF M10 x 1 300 bar 029720218-NF M10 x 1 300 bar

3.4. Release Device
The NAFFCOInert® System can be combined with four different types
of release devices.
The different types of release devices are specified in this chapter.
The manual/pneumatic release device allows manual or pneumatic
actuation of several system components. This release device is used for
pneumatic actuation of multiple cylinders in series, which are connected
to the master cylinder by a pilot hose. Manual actuation is accomplished
by pulling the hand lever on the manual/pneumatic release device. In
the closed position the manual/pneumatic release device is secured
with a safety pin. By removing the safety pin, the hand lever can be
manually pressed down to activate the valve so that inert gas is
released.
3.4.1. Manual/Pneumatic Release Device
Technical Data
Part number PA0652-2 PA0652-6
B04420065 - NF (NLAC-0652-2) (NLAC-0652-6)
Valve connection M42 x 1.5 1”-11 BSPP
Working pressure 300 bar
Pneumatic connection G 1/8”
Material Brass and stainless steel Stainless Steel
Actuation Force <150 N
min. 21 bar for 300 bar systems:
Actuation p max. = 360 bar 280 Psi (19.3 Bar)
pressure min. 15 bar for 200 bar systems:
p max. = 240 bar
89/106/EEC,
Conformity - -
VdS
3.4.2. Pneumatic Release Device
Technical Data
Part number B04420066 - NF
Valve connection M42 x 1.5
Working pressure 300 bar
Pneumatic connection G 1/8”
Material Brass
p max. = 360 bar
Actuation pressure
p max. = 240 bar
89/106/EEC,
Conformity
VdS
This release device is used for pneumatic actuation of multiple cylinders
56
in series, which are connected to the master cylinder by a pilot hose.

Cylinders equipped with the pneumatic release device serve as slave
Page
cylinders.

3.4.3. Electromagnetic Release Device

The electromagnetic release device is used to actuate the system electrically. It is mounted on top of the master
valve and is operated by an electrical signal from a fire detection system. In order to actuate the electromagnetic
release device a constant DC voltage of 24 V is required.
The electromagnetic release device can be combined with the manual release device or the manual/pneumatic
release device or the pneumatic release device.
3.4.3.1. Electromagnetic Release Device with and without Diode
Technical Data
B04425146-NF/ B04425148-NF(with diode)
Part number B04425147-NF/ B04425149-NF(without diode)
Nominal voltage 24 VDC
Electrical connection ---
Nominal current 0.5 A
Protection class IP65
Brass and stainless steel
Material
Plastic protection cap
Conformity 89/106/EEC
3.4.3.2. Reset Tool for Electromagnetic Release Devices

Technical Data
Part number 02300064 - NF
Connection M42 x 1.5
Material Brass
The reset tool is used to reset the electromagnetic release device
piston after system discharge. The reset tool is screwed into the bottom
of the electromagnetic release device.
3.4.3.3. Adapter
Technical Data
Part number 029510006 - NF
Connection G1/8” / M12 x 1.5
Material Brass
The adapter is used for the connection of pilot hoses to the manual/
pneumatic release device or to the pneumatic release device.
57 Page

3.4.3.4 Explosion Proof Actuator
The actuator of the primary releasing devices used on gaseous extinguishing system. A supervisory feature is
integrated into these solenoid actuators to indicate when the device is incorrectly installed or disconnected. The fire
suppression system cannot operate unless the actuator is properly installed .
Technical Data
Part number PA0546-2 (NEX - 0546)
Enclosure Material Stainless Steel
Valve Connection 1”-11 BSPP
Voltage Supply 24 VDC
Monitoring Current <30mA
Enclosure Type Rating Type 4X
Protection class IP66
Ambient Temperature -20o C to + 65o C
Approval UL 864, 1203,50e / CSA C22.2 NO. 30:20
UL,IEC,CENELEC EN & CSA C22.2 No. 60079-0 & 60079-1
IEC 60529
cURus. Class I, Division I, Group A, B, C & D, T5
E492320 Class I, Zone I, AEx db IIC T5 Gb / Ex db IIC T5 Gb
II 2 G Ex db IIC T5 Gb
UL 21 ATEX 2557X
CE 0539 II 2 G Ex db IC T5 Gb
IECEx UL 21.0050X
Ex db IIC T5 Gb
58 Page

3.4.3.6 Release Actuator

The High Pressure supervised latching actuator is specially designed with operating pressure of up to 300 bar.
This patented component signals the system panel if the actuator has not been installed correctly.
Technical Data
Part number PA0441-1 (NRA - 0441)
Voltage Supply 24 VDC
Monitoring Current <30mA
Ambient Temperature -20o C to + 55o C
Corrosion Resistant Material or finish on exterior components
Recognised Component to UL 864
Swivel Adaptor CDA 360 Brass or SS
Nose Material Type II Anodized Aluminum or Brass or SS
J unction Box Type II Anodized Aluminum or Brass or SS
3.5.
Technical Data
Part number B06920211 - NF B06920212 - NF B06920213 - NF
Connection 2 x M12 x 1.5 2 x M12 x 1.5 2 x M12 x 1.5
Length 400 mm 700 mm 500 mm
Bending radius 75 mm 75 mm 75 mm
Nominal diameter DN 6 DN 6 DN 6
Working pressure 400 bar 400 bar 400 bar
Burst pressure 1600 bar 1600 bar 1600 bar
Max.operating temp. -40 C to + 100o C
o
Standard EN 857 2 SC
Material
 Connection Galvanized steel
 Hose inner layer Oil resistant synthetic rubber
 Hose insert Two high tensile steel wire braided inserts
 Hose outer layer Oil resistant and weatherproof synthetic rubber
Conformity VdS
59 Page

The pilot hose is used to build up the pilot line, i.e. for the connection of several release devices and/or for the
connection of the valve to the release device. The pilot hose may only be used in accordance with component approval in
stationary inert gases fire extinguishing systems. Several cylinders, equipped with valves, can be connected with pilot hoses.
3.6. Discharge Hoses

3.6.1. Discharge Hose DN16 for 140L Cylinder
Technical Data
Part number B06920225-NF
Nominal diameter DN16
Connection thread inlet W21.8 x 1/14” • G3/4”
Length 400mm
Working pressure Max. 350 bar
Burst pressure 1400 bar
Bending radius 180 mm
Max.operating temperature -40o C to + 100o C
Standard EN 853 2 SN
Material
 Connection Galvanized steel
 Hose insert Two high tensile steel wire braided inserts
 Hose outer layer Oil resistant and weatherproof synthetic rubber
Conformity VdS
The discharge hose is used for the connection of the constant flow and
pressure discharge regulator to the check valve.
The discharge hose is provided with one W21.8 x 1/14” nut and one G3/4”
nut. The nuts are protected with plastic caps, which must be removed
before installation.
60
The W21.8 x 1/14“ nut with the inserted gasket is installed on the constant
flow and pressure discharge regulator. The G3/4“ nut with the inserted
Page
gasket is connected to a check valve.

3.6.2. Discharge Hose DN12 Straight

Technical Data
Nominal diameter DN12
Connection thread inlet W21.8 x 1/14” • G3/4”
Length 400mm
Working pressure Max. 380 bar
Burst pressure 1520 bar
Bending radius 130 mm
Max.operating temperature -40o C to + 100o C
Standard EN 853 2 SN
Material
 Connection W21.8 x 1/14” Brass
 Connection G3/4” Steel coated
 Hose insert Two high tensile steel wire braided
inserts
 Hose outer layer Oil resistant and weatherproof synthetic
rubber
Conformity VdS
The discharge hose is used for the connection of the constant flow and pressure
discharge regulator to the check valve. The discharge hose is provided with one
W21.8 x 1/14” nut and one G3/4” nut.
61
The nuts are protected with plastic caps, which must be removed before
installation. The W21.8 x 1/14“ nut with the pressed gasket is installed on the
Page
constant flow and pressure discharge regulator. The G3/4“ nut with the inserted
gasket is connected to a check valve.

NAFFCOInert®
3.7. Bleed Valve

Technical Data
Part number 029730040 -NF
Connection thread inlet G1/8” ISO 228-1
Closing pressure 0.7 - 1.5 bar
Material Brass
Conformity VdS
The bleed valve is installed at the end of the pilot line at the last pneumatic
release device. The bleed valve prevents an accidental system release. The
bleed valve is provided with a connection thread G1/8” DIN ISO 228-1 for the
connection at the end of the pilot line at the last pneumatic release device.
3.8. Manifold Check Valve
Technical Data
Nominal diameter DN 12
Connection thread inlet G3/4” DIN ISO 228-1
Connection thread outlet R1” DIN EN 10226-1
Pressure to open < 0.1 bar
Leak rate at 20 bar ≤ 20 bubbles / 1 min
Material
 Housing Brass
 Ball Stainless Steel
 Seating Thermoplastic
Conformity VdS
The check valve prevents a backflow of the extinguishing agent into the
62
cylinder. The check valve is provided with a connection thread R1“ DIN EN
10226-1 for the connection to the manifold and a connection thread G3/4“
Page
DIN ISO 228-1 for the connection to the discharge hose.

NAFFCOInert®
3.9. Manifolds
Manifolds are used to connect several cylinders at 100 bar pressure. They can only be used with discharge valves
with constant flow and pressure discharge regulators.
Manifolds are offered in 2, 3, 4 and 5 cylinder configurations utilizing for cylinders. For systems that require more
than 5 cylinders, manifolds must be interconnected into a common feed pipe.
When utilizing multiple cylinders or a Reserve supply of cylinders in a common cylinder bank a discharge manifold is
necessary. Multiple cylinders may be connected to a common discharge manifold to allow delivery of agent through
a single piping network. Discharge Manifolds may be used in combination or modified as necessary to fit the exact
quantity of cylinders required for the system. Each manifold is designed to be connected to the cylinder via a Check
Valve and Discharge Hose and comes ready assembled.
3.9.1. Manifold
Manifold Part Number
Manifold Description 267 Dia Cylinder 356 Dia Cylinder
2 Cylinder Manifold NFIG-267-SRM2 NFIG-360-SRM2
For cylinder banks of more than 5 Cylinders it may be necessary to interconnect multiple manifolds. Manifolds may be
connected as center feed, end feed or “H” feed configurations into a common discharge pipe.
Once the manifold is assembled and the cylinders connected, the manifold should not be supported by the cylinders.
The manifold piping should be secured with pipe hangers or brackets to support the manifold when the containers are
removed.
63 Page

NAFFCOInert®
3.9.2 End Cap

1" NPT
15
41
ISOMETRIC VIEW
MANIFOLD END CAP 1"SIZE
2" NPT
20
48
ISOMETRIC VIEW

25
65
ISOMETRIC VIEW
64 Page

NAFFCOInert®
3.10.Nozzles
Technical Data
Connection Thread R½” DIN R¾” DIN R1” DIN R1½” DIN
EN 10226-1 EN 10226-1 EN-10226-1 EN-10226-1
Orifice Size 3~10mm 7~14mm 10~18mm 15~26mm
Working Pressure 60 bar at 20°C
Material nozzle
Brass
body
Conformity Vds
The nozzle distributes the extinguishing agent evenly in the extinguishing zone in the calculated flooding time.
Nozzles are designed to direct the discharge of inert gas using the stored pressure from the cylinders. Nozzles are
available in 360° discharge patterns.
The nozzle selection depends on the hazard and location to be protected.
Nozzles are available with a connection thread R 1½“, R1“, R½“ & R¾“ and can be screwed into every fitting
corresponding to the pressure stage and the thread. The nozzle outlet must point downwards to distribute the
extinguishing agent effectively and to prevent pollution.
Size A B
½” 48 mm 13 mm
¾” 59 mm 16 mm
1” 75 mm 20 mm
1½” 104 mm 26 mm
65 Page

NAFFCOInert®
PART NUMBER & ORIFICE Ø FOR 360° RADIAL NOZZLE
Connection Thread Part Number Orifice Ø Part Number Orifice Ø
N360 030 15 3mm N360 035 15 3.5mm
N360 040 15 4mm N360 045 15 4.5mm
N360 050 15 5mm N360 055 15 5.5mm
R½” DIN EN 10226-1 N360 060 15 6mm N360 065 15 6.5mm
N360 070 15 7mm N360 075 15 7.5mm
N360 080 15 8mm N360 085 15 8.5mm
N360 090 15 9mm N360 095 15 9.5mm
N360 070 20 7mm N360 075 20 7.5mm
N360 080 20 8mm N360 085 20 8.5mm
N360 090 20 9mm N360 095 20 9.5mm
R¾” DIN EN 10226-1 N360 100 20 10mm N360 105 20 10.5mm
N360 110 20 11mm N360 115 20 11.5mm
N360 120 20 12mm N360 125 20 12.5mm
N360 130 20 13mm N360 135 20 13.5mm
N360 100 25 10mm N360 105 25 10.5mm
N360 110 25 11mm N360 115 25 11.5mm
N360 120 25 12mm N360 125 25 12.5mm
N360 130 25 13mm N360 135 25 13.5mm

R1” DIN EN 10226-1
N360 140 25 14mm N360 145 25 14.5mm
N360 150 25 15mm N360 155 25 15.5mm
N360 160 25 16mm N360 165 25 16.5mm
N360 170 25 17mm N360 175 25 17.5mm
N360 150 40 15mm N360 155 40 15.5mm
N360 160 40 16mm N360 165 40 16.5mm
N360 170 40 17mm N360 175 40 17.5mm
N360 180 40 18mm N360 185 40 18.5mm
N360 190 40 19mm N360 195 40 19.5mm

R1½” DIN EN 10226-1 N360 200 40 20mm N360 205 40 20.5mm
N360 210 40 21mm N360 215 40 21.5mm
N360 220 40 22mm N360 225 40 22.5mm
N360 230 40 23mm N360 235 40 23.5mm
N360 240 40 24mm N360 245 40 24.5mm

66
N360 250 40 25mm N360 255 40 25.5mm

Page

NAFFCOInert®
S3.10.1 S SILENT NOZZLE (NSN 04613 SERIES)
Silent nozzle of this product are used in stationary fire extinguishing systems. The silent nozzle distributes the
extinguishing agent evenly in the extinguishing zone on the calculated flooding time.
Legend
O Orifice diameter D Outer diameter
I Connection thread L Length
Technical data
Type NSN 04613 Series
60 bar (operation allowed only in combination with the

Operating pressure
constant flow and pressure discharge regulator series
• IG-55
Operating medium
• IG-541
104 +/-5 dBA

Noise development (pressure in front of nozzle: 27 +/-3 bar;
mass flow: 33 +/-4 kg/min
Orifice diameter (O) refer below table
Connection thread (I) refer below table
Outer diameter (D) refer below table
Length (L) refer below table
Maximum operating temperature range -20°C to +50°C
Material • Brass
• Nozzle body • Inox
• Filter parts
Weight depending on variants approx. 1,5 kg (depending on variants)
67 Page

NAFFCOInert®
PART NUMBER & ORIFICE Ø FOR NOZZLE
Orifice diameter (O) Connection thread (I) Outer diameter (D) Length (L)
Article number
[mm] EN 10226-1 [mm] [mm]
NSN 04613101 Ø3
NSN 04613102 Ø 3,5
NSN 04613103 Ø4
NSN 04613104 Ø 4,5
NSN 04613105 Ø5
NSN 04613106 Ø 5,5
NSN 04613107 Ø6
NSN 04613108 Ø 6,5 R 1/2 " 71
NSN 04613109 Ø7
NSN 04613110 Ø 7,5
NSN 04613111 Ø8
NSN 04613112 Ø 8,5
NSN 04613113 Ø9
NSN 04613114 Ø 9,5
NSN 04613115 Ø 10
NSN 04613001 Ø9
NSN 04613002 Ø 9,5
Ø 114
NSN 04613003 Ø 10
NSN 04613004 Ø 10,5
NSN 04613005 Ø 11
NSN 04613006 Ø 11,5
NSN 04613007 Ø 12
NSN 04613008 Ø 12,5
NSN 04613009 Ø 13
NSN 04613010 Ø 13,5 R 1" 151
NSN 04613011 Ø 14
NSN 04613012 Ø 14,5
NSN 04613013 Ø 15
NSN 04613014 Ø 15,5
NSN 04613015 Ø 16
NSN 04613016 Ø 16,5
68
NSN 04613017 Ø 17
Page
NSN 04613018 Ø 17,5

NSN 04613019 Ø 18

NAFFCOInert®
3.11.1. Pressure relief device for manifold
Technical Data
Set pressure 66 bar at 20°C / 957 psi at 68°F
Connection thread G½”
The pressure relief device for manifold is a safety device to prevent over pressure during discharge.
In case of overpressure the pressure relief device for manifold opens and the extinguishing agent is evacuated
through its outlet.
The pressure relief device for manifold is provided with an inlet male which can be screwed into the manifold. The
outlet female can be connected to any fitting and pipe corresponding to the pressure stage and the thread, to direct
extinguishing agent to an appropriated area.
3.11.2. Pressure and Flow Detector Switch
Technical Data
Opening pressure 2 Bar
Design pressure 200 bar
Test pressure 300 bar
Inlet Connection thread G½” or G¾”
Power Source 400 VAC / 3A or 24VAC / 10A
Protection IP65
The pressure and flow detector switch is connected to the manifold and to a power supply. It reacts in the earliest stage
of extinguishing agent discharge at 2 bar pressure and energizes or de-energizes electrically operated equipment. After
a discharge the pressure and flow detector switch must be reset manually.
For the connection of the pressure and flow detector switch refer of the appendix, Page 199.
3.11.3. Releasing Circuit Disable Switch *

This manual disable keyed switch enables the operator to put the suppression release circuit disable by electrically isolating
the connected agent release signal in case of repair or maintenance of electromagnetic release device. This allows the
operator to work in the area protected by the suppression system without accidentally released system.
The device consist of a stainless steel faceplate, green LED, amber LED and a switch assembly.
Technical Data
Part number RCDS-1 (Potter)
Contact Rating 1 AMP @ 40 VDC
Power Requirements 24 VDC, 10mA
Temperature Range -22°F to 140°F ( -30°C to 60°C)
Approvals UL, ULC
* Not Covered in FM Approval
69
Note: Refer to the switch instructions and control panel manual for proper wiring instructions.
Page

NAFFCOInert®
3.11.4. Monitoring Switch for Electromagnetic Release Devices*

The Monitoring switch for electromagnetic release
device monitors that the electromagnetic actuator
is properly in place to actuate the system. It is
connected to the alarm box.
It is a compact design remains in the cylinder and
simply clamps around the valve base. Also it is easy to
retrofit with the existing installation set up.
Application
- Specifying a physical switch to disconnect the release
circuit in place of a software controlled disconnect
- Creating a supervisory condition on the associated
release panel
Note: Pin from switch needs to be pushed in at least 3mm after installation.
Part Number 029905200 - NF
Artical Code B0480
Dimensions Wx H x D: 11,8 cm x 9,1 cm x 6,6 cm
Contact NO or NF (Cables Included)
Temperature Range -30o C to 60o C (-22o F to 140o F)
B0480
* Not Covered in FM Approval
3.11.5 Tamper Devices

Part Number 028000358 - NF
70 Page

NAFFCOInert®
The tamper device is a red sticker with an imprint WARRANTY . It is used as a seal to avoid manipulation of the
electromagnetic release device after installation It is also used to seal the electrical control box in a multi-zone system,
Attach a tamper device on all electromagnetic release device after installation as shown on the picture. Use new tamper
devices after maintenance.
Attach a tamper device on the left and right side of all electrical control boxes in multizone system after installatioin as
shown on the picture below. Use new tamper devices after maintenance.
3.12. Selector Valve (For Multi- Zone Distribution)

Selector Valve allow a single agent supply to be utilized for protection
of multiple zones by using the same number of cylinders.
It is necessary to use the selector valve to utilize the multiple
cylinders to protect the multiple zones. Selector Valves direct the
extinguishing agent to the appropriate flooding zone and reduces the
total amount of agent and number of cylinders required.
The Selector Valve body is available in Carbon Steel. Selector Valve is
a ball valve that control the flow of inert gas through the piping network
until the valve is activated either by manually or electrically. The actuation
pressure for the selector valve is 8-10 bar pressure. Each selector valve
is equipped with the monitoring device which shows the valve position
(Open or Closed) that provides a visual indication of the valve status.
Technical Data
Part number B05511050- NF B05511150- NF B05511250 - NF B05511350 - NF B05511450- NF B05511550- NF
Diameter G1” (DN25) G1½” (DN40) G2” (DN50) G2½” (DN65) G3” (DN80) 4 ” (DN100)
Connection NPT Female Threaded Flanged End
Working Pressure 140 Bar
Actuation Pressure 8-10 Bar
Material Carbon Steel
Selector Valve Multizone Distribution with Solenoid Head Valve and Diiferential Head Valve
Pilot cylinder assembly for selector valve actuation consists of Both of these actuation methods result in the opening of a nitrogen
Manual / Pneumatic release device which allows manual or pilot cylinder that pneumatically opens the Selector Valve. Each
pneumatic actuation of the selector valve for the individual zones Selector Valve is equipped with the monitoring device which shows
for system operation. Manual actuation is accomplished by pulling the valve Position (Open or Closed) that provides a visual indication
the hand lever on the manual/pneumatic release device is secured of the valve status. Pop Off Valve is used to reset the Selector Valve
with a safety pin. By removing the safety pin, the hand lever can be after the system discharge.
manually pressed down to actuate the valve so that the nitrogen
71
is released from the cartridge. Electric magnetic device is used to

actuate the system electrically. It is mounted top of the pilot cylinder
Page
valve and is operated by an electrical signal of constant DC voltage

of 24V electric solenoid from the fire detection system.
* Option 1 & 2 applicable only for UL Listed System

NAFFCOInert®
3.12.1 Solenoid Head Valve (Option - 1)
1. Selector Valve 5. Pilot Cylinder, W28.8 x 14TPI Threaded

2. High Pressure Primary Regulator to 25E EN ISO 113631-1
(Set Pressure -6 to 10 Bar) UL Listed 6. Pop Off Valve, Set Pressure 175 Psi
3. 1/4" High Pressure Pilot Hose
4. Discharge Valve,
Part Number: B04390031 (24V) / B04390054 (12V)
3.12.2 Differential Head Valve (Option - 2)
1. Selector Valve (Ref: Clause 3.12) 6. Electromagnetic Release Device

2. High Pressure Primary Regulator Part number: B04425146-NF
(Set Pressure 6 to 10 Bar) UL Listed 7. Manual/Pneumatic Release Device
3. 1/4 High Pressure Pilot Hose (Max. Length 1.5Mtr) Part number: B04420065-NF
8. Pressure Gauge, Patt number: 029720221-NF
72
4. Constant Flow & Pressure Discharge

Regulator, Part number: B8400003-NF 9. Pilot Cylinder, W28.8x14TPI Threaded to
Page
25E EN ISO 113631-1

5. Discharge Valve, Patt number: B04801218-NF 10. Pop off Valve, Set Pressure 175 Psi

NAFFCOInert®
3.12.3 Pneumatic Control Panel (Option - 3)

The pneumatic control panel is made of several individual components, which are fixed on a support of control panel
arrangement.
Pneumatic Inlet Hose

1/4" NPT from Manifold
B08920212 Marking Arial

=
h 4mm
L 700mm
Inlet Pressure
60bar (Max.) Cover sheets for mounting plate in
Case 3/2 Way valve is not installed
Pneumatic Outlet
DN8 (Bulkhead Fitting)
Electrical Interface Box (24 VDC)
Electrical Inlet
PG Gland (Cable 3, 5-8mm)
Outlet Pressure
Protection Zone 8bar
Manual Reset
Reset and Manual Actuation

- The Valve must be under pressure and the control signal must be off
- To reset the valve turn the manual override (reset) to Pos.1 and back to Pos.0 until valve stops to operate (noise)
- For manual actuation of the valve turn the manual override (manual actuation) to Pos.1 and back to Pos.0 until valve
stop to operate (noise)
- To vent the system afterwards push the bleed valve until air flow stops
Accessories
Pneumatic hose and Quick connection fittings not included in the scope of supply along with pneumatic panel
(Can we supplied along with Pneumatic Control Panel up on request)
Pneumatic Hose Quick Connection Fitting
Pneumatic Hose Quick Connection Fitting

73
Outside Diameter: 8mm Connection Size: Ø 8mm

Page
Inside Diameter: 6mm Material: Nickel Plated Brass

NAFFCOInert®
SIZE OF ZONE PANEL
S.NO. NO. OF ZONE LENGTH (L) HEIGTH (H) DEPTH (D)
1 2 TO 5 470mm 450mm 6mm

2 6 TO 10 700mm 450mm 6mm
3 11 TO 15 1000mm 450mm 6mm

BILL OF MATERIAL FOR 15 ZONE PANEL
S. NO. DESCRIPTION QTY
13 Reducing, brass, G 1/4"I, 1/4" NPT o, WP 16 bar, WS17 2
1 3/2way Valve/electro pneumatic/24DC/UL-Coil/G1/8/bistable/1-10bar/DN5/Temp.-10oC to +60oC 15
14 Fixation "Normafix" K, size 1, clamp size 63-80mm 3
2 Mounting plate for 3/2-way valve connection G 1/8 3
15 Connector type B / IP 65 / Contacts 2 + grounding / cable inlet PG / Ø6-8mm 15
3 L-fitting (Blue Serie), rotatable, R1/4a., for tube outside- Ø8 mm, WP max. 15bar, Plastic/MS vern. 2
16 Screw in fitting AGN 1/4" CEL06 2
4 Fitting Straight, R 1/8 a, tube outside- Ø8 mm, WP max. 315 bar, WS117, WS214, steel zinc 15
coated 17 Hp Tube 2SC DN 6 / B06920212 1
5 Plug, Hex 6mm, G1/4, O-Ring, WP max. 60 bar, WT max. 80°C, brass nickel coated 3 18 Bleed valve 029730040 1
6 Silencer sintered, flat, G1/4a., WP max. 10 bar, WT-10°C bis 250°C 1 19 Plug with hex / 1/4"NPT / type straight / steel calv.coated / thread sealed 1
7 Hose clamp, steel coated (W1), clamp size 60,0 - 80,0mm, B 20,0 mm 3 20 Distance sheet, aluminium, 56 x 15 x 7 mm 6
8 Manometer Typ 111.11, Ø2.5", G 1/4" bottom radial, 0-16 bat, UL252 1 21 Distance sheet, aluminium, 45 x 45 x 8 mm 1
9 Cover Sheet for mounting plate G1/4 for connection G 1/8 0 22 Screw hex M8 x 20 6
10 HP regulator / 1/4' / NPT / 5-125 psig (0,3 to 3,5 bar) / without manometer 1 23 Electrical interface box Rittal PK9521.050 1
11 Mounting plate aluminium / 450(H) x 1000(L) x 6(D) mm 1 24 Connector 2
12 Reducing nipple, G 1/4a., G 1/8i., WS 17, WP max. 60 bar, WT max. 150°C, brass inc coated 1 25 Cable Trunking 1
3.13. Pneumatic Control Panel fixing details
Optional
Clips will be delivered as non fixed part

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Figure 3-1 Pneumatic Control Panel Fixing details

NAFFCOInert®
3.13.1 Pressure Reducing Valve

Technical Data
Connection thread G1/4”
Maximum pressure 207 bar (3000 psig)
Operating temperature -
-15°C to 65°C (-4°F to 150°F)
Inlet connection for hi-flex hose 1/4”
Conformity UL listed (SA1089)
3.13.2. Inlet Connection for ¼” Hi-Flex Hose
3.13.3. 3/2 way Solenoid Valves with Manual Over-Ride G1/8”

Technical Data
Nominal voltage 24 VDC - 2W
Maximum pressure 10 bar
Conformity UL standard 429 electrically operated valves
3.13.4. Pneumatic Control Panel Size

Part number Name Zones Length in mm Height in mm Depth in mm
NF-SVCB02 2 Zones 470 450 6mm
NF-SVCB07 Control panel with 7 Zones 700 450 6mm
NF-SVCB08 different 8 Zones 700 450 6mm
NF-SVCB09 configurations 9 Zones 700 450 6mm
(zones)
3.13.5. Detection and Control Panel Information
NAFFCOInert® system shall be used in conjunction with a UL Listed/FM Approved Fire Alarm/Extinguishing control panel that
is compatible with the system and to refer the control panel manual. All detection and notification devices shall also be
UL Listed/FM Approved compatible with the control panel.
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NAFFCOInert®
4. DESIGN
The design of the NAFFCOInert® System must be in accordance with, but not necessarily limited to, the
recommendations of National Fire Fighting Manufacturing FZCO and the applicable requirements set forth in the
latest editions of the following standards:
“minimum” design standards. Also compliance with the Authority Having Jurisdiction must be required and good
engineering practices must be implemented.
The NAFFCOInert® System is designed for total flooding in accordance with the standards mentioned above.
The designer must be trained and certified by National Fire Fighting Manufacturing FZCO. The designer must
consider and address possible fire hazards within the protected enclosure at the design stage.
The designer must consider the effect of extinguishing agent distribution through the hazard when the
NAFFCOInert® System is operational and in use. The design must be based on a detailed knowledge of the
protected area, its use and the necessity of personnel protection.
It is important to consider the fire precautions of the premises as a whole. NAFFCOInert® System can only be part of
a fire protection concept in combination with other fire protection measures, e.g. a fire detection system.
The design engineer must become thoroughly familiar with this design manual in order to define the proper pro-
cedures for applying the input parameters to the VdS calculation software. There are a number of limitations to these
input parameters which must be observed if accurate results are to be obtained. Most of these limitations are in the
VdS calculation software.
NOTE:
For a sample calculation with the VdS calculation software, refer to chapter 4.5.
Before you start to design a NAFFCOInert® System, the following data must be known:
 Kind and use of enclosure to be protected (i.e. computer room, storage room, museum etc.)
 Volume of the enclosure including false ceilings / subfloors and special characteristics of the
enclosure (i.e. closable and unclosable openings, ventilation systems, unclosable leakages at cables
entries, windows)
 Minimum and maximum temperatures in the enclosure
 Altitude of the enclosure above or below sea level
 Structural strength of the enclosure
 Storage conditions of the cylinders
 Distance between the protected enclosure and the storage room of cylinders
The NAFFCOInert® System is designed for fires of class A, B, C (refer also to chapter 2). The NAFFCOInert®
System is not designed for local application.
IG55, IG541, IG100 and IG01 shall not be used on fires involving the following materials unless the agents
have been tested to the satisfaction of the Authority Having Jurisdiction:
 Certain chemicals or mixtures of chemicals, such as cellulose nitrate and gunpowder, which are
capable of rapid oxidation in the absence of air
76
 Reactive metals such as lithium, sodium, potassium, magnesium, titanium, zirconium, uranium,
and plutonium
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NAFFCOInert®
 Metal hydrides
 Chemicals capable of undergoing auto thermal decomposition, such as certain organic
peroxides and hydrazine
However, there are certain restrictions that must be addressed by the design engineer before applying the input
data. The following chapters describe the essential design parameters and design limitations which must be
considered.
CAUTION!
For hazards beyond the scope described in this manual, the designer must consult National
Fire Fighting Manufacturing FZCO, NFPA 2001 and ISO14520 on the suitability of inert gas as
extinguishing agent for the protection, necessary design concentration and personnel
exposure effects from that concentration.
4.1. Determine the Volume of the Hazard
The first step in the design of NAFFCOInert® System is to calculate the volume of each enclosure to be protected.
With the exception of solid objects, the enclosure must be considered as an empty room, when calculating the
volume of the enclosure. Solid objects are e.g. columns, beams, cut-out room sections, closets that will always be
closed, ducts that pass completely through the area without any openings, and any other large, permanently fixed
objects that cannot be removed from the enclosure.
For small enclosures, the equipment of the enclosure must also be considered, because the equipment reduces a
considerable percentage of the enclosure volume. Consider if the reduced volume will raise the effective
concentration of the extinguishing agent in normally occupied areas from the NOAEL to the LOAEL. This con-
sideration must be carefully balanced against the need to maintain an adequate concentration even when the
enclosure is empty.
4.1.1. Rectangular Enclosure
1. Make a drawing of the enclosure where you need to find the volume.
2. Measure the length, width and height of the enclosure.
3. For the calculation of the volume, multiply the length by the width and then by the height. Use the same units,
whether feet, metres or inches, in all measurements.
4. Subtract the volume of solid objects in order to calculate the net volume of the enclosure.
Calculate the volume of each solid object separately and add them together to determine the volume of all solid
objects.
4.1.2. Non-Rectangular Irregular Enclosure

1. Make a drawing of the enclosure where you need to find the volume.
or rectangular sections first and then
2. Divide the enclosure into measurable sections, mapping out square
irregular sections separately.
3. Measure the length, width and height of each section.
4. Calculate of the volume of each section separately by multiplying the length by the width and then by the height.
Use the same units, whether feet, metres or inches, in all measurements.
5. Add the result of all sections together to determine the volume of the enclosure.
6. Subtract the volume of solid objects in order to calculate the net volume of the enclosure.
Calculate the volume of each solid object separately and add them together to determine the volume of all solid
objects.
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NAFFCOInert®
4.1.3. Integrity Test of the Enclosure

For a NAFFCOInert® System you must perform an integrity test of the enclosure to locate and then effectively seal
any significant leaks that could result in a failure of the enclosure to hold the extinguishing agent concentration level
for the specified hold time. For the calculation of the extinguishing agent concentration for the specified hold time, a
blower door test may be performed to establish the integrity of enclosures.
The blower door fan is used to blow air into or out of the enclosure, creating either a positive or negative pressure
differential between inside and outside. This pressure difference forces air through all air leaks of the enclosure. The
tighter the enclosure, the less air is needed from the blower door fan to create a pressure change in the enclosure.
For detailed information refer to the standards of NFPA 2001 Standard on Clean Agent Fire Extinguishing Systems.
4.1.4. Limitations - Enclosure

 Structural strength of the enclosure: walls, ceilings, false ceilings, floors, subfloors, doors, windows etc. of the
enclosure must withstand any increase of pressure during discharge. If the pressure due to discharge
presents a threat to the structural strength of the enclosure, venting must be provided to prevent excessive
pressures. Refer also to chapter 4.2.4.4.
 The enclosure must be non-combustible or fire-resistant for at least 30 minutes, so that the enclosure is
maintained until the end of the hold time.
NOTE:
To avoid loss of extinguishing agent through openings to adjacent areas, openings must
either be permanently sealed or equipped with automatic closures.
CAUTION!
Forced-air ventilating systems using additional air must shut down or close automatically be-
fore or simultaneously with the discharge of the extinguishing agent, because their continued
operation can adversely affect the performance of the NAFFCOInert® System or result in
propagation of the fire.
4.2. Calculation of the Extinguishing Agent
The procedure to determine the quantity of the extinguishing agent required to protect a specified hazard is as
follows:
1. Calculate the design quantity of gas required to protect a room of the given volume and the given risk (refer to
chapter 4.2.1).
2. Calculate the design concentration of gas required to protect a room of the given volume and the given risk
(refer to chapter 4.2.2).
3. Corrections due to forced-air ventilating systems, interconnected volumes or unclosable openings if necessary
(refer to chapter 4.2.4).
4. The height and temperature dependence of the design quantity has to be taken into account (refer to chapter
4.2.4).
5. The final storage quantity is based on the design quantity and the reserve quantity, which have to be determined
according to chapter 4.3.2.
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NAFFCOInert®
4.2.1. Formula for the Calculation of the Minimum Design Concentration

The minimum design quantity can be calculated with the formula:
V   100 
W     ln  
s
  100  C 
Definitions:
W = Agent Quantity [lb or kg]
V = Volume of the test enclosure [ft3 or m3 ]
S = Specific Volume of clean agent at the test temperature T [ft3 /lb or m3 /kg]
T = Test enclosure temperature after the design concentration has been achived in the enclosure
C = Agent volume concentration [ percent ]
The relevant values of K1 and K2 are:
IG01: K1 = 0.56119 and K2 = 0.00205
IG100: K1 = 0.79968 and K2 = 0.00293
IG55: K1 = 0.659 and K2 = 0.002416
IG541: K1 = 0.65799 and K2 = 0.002293
T: minimum anticipated temperature in the enclosure in °C.
C: design concentration of inert gas in volume percent.
NOTE:
A temperature adjustment is already integrated in this formula. It is universally valid for
designs according to NFPA 2001 (2015) and ISO 14520-1 (2000).
4.2.2. Calculation of the Design Concentration
The second step in the design of NAFFCOInert® System is to calculate the required design concentration for the
enclosure to be protected.
NFPA 2001 requires that 95% of the design quantity must be discharged within 60 seconds for Class B fuel hazards,
and 120 seconds for Class A surface fire hazards or Class C hazards from the start of the discharge. NAFFCOInert®
System must, therefore, be designed to meet this criterion unless the Authority Having Jurisdiction permits a longer
discharge time. The NAFFCOInert® System is listed for discharge times of the required range according to NFPA
2001.
The minimum design concentration for NAFFCOInert® System according to UL 2127 depends on the class of fire.
IG01 Extinguishing Agent Safety Factor IG01 Design Safety Factor IG01 Design
Risk (NFPA)
Concentration [%-vol ] Concentration [%-vol ] (UL2127) Concentration [%-vol ]
Class A (*) 30.7 1.2 36.84 - -
Class B(**) 40.3 1.3 52.39 - -
Class C 30.7 1.35 41.44 - -
Table 4-1 IG01 concentrations according to NFPA 2001, UL2127 & FM5600
Risk (NFPA) (UL2127)
Concentration [%-vol ] Concentration [%-vol ] Concentration [%-vol ]
Class A (*) 30.92 1.2 37.10 1.004 37.25
79
Class B(**) 31.13 1.3 40.47 - -

Class C 30.92 1.35 41.74 -
1.004 41.91
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NAFFCOInert®
Risk (NFPA)
Class A (*) 32.29 1.2 38.75 - -
Class B(**) 30.51 1.3 39.66 - -
Class C 32.29 1.35 43.59 - -
Risk (NFPA)
Class A (*) 29.04 1.2 34.85 1.046 36.45
Class B(**) 32.43 1.3 42.16 - -
Class C 29.04 1.35 39.20 1.046 41.00
(*) According to NFPA 2001, section 5.4.2.4, the design concentration of a Class A fire can’t be lower than the
extinguishing concentration of a Class B fire.
(**) For a Class B fire the specified minimum design concentration is for heptane. If the hazard contains liquids with a
cup burner value higher than tested for heptane the design concentration has to be determined in accordance with
NFPA 2001, as a guide for comparison of extinguishing concentration of ignitable liquids see ISO 14520 to verify if
the cup burner value exceeds that for heptane. For IG100 and IG541, the penalty factors shown above for Class A
and C fuels shall also be applied to other Class B fuels with higher cup burner values than heptane.
NOTE:
If there are flammable liquids in one calculation area, the maximum design concentration must
be applied.
4.2.3. Alternative Quick Calculation

A quick quantity calculation can be made by using the flooding factors as shown in table 4-5 to table 4-8.
 Select the row corresponding to the lowest anticipated temperature in the protected enclosure.
 Read off the flooding factor from the column for the required design concentration.
If you want to use IG100 for example as extinguishing agent, the flooding factor at a temperature of 20°C and design
concentration of 42% is 0.545 kg/m3.
Only set design concentrations are given. If the design concentration required is between those given in the tables,
then extrapolation will provide an acceptable flooding factor.
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NAFFCOInert®
Specific
Volume requirements of IG01 per unit volume of Hazard V agent/Venclosure
Tempera vapour
ture °C volume Design Concentration (Percent by Volume)
m3/kg C
T S 34 38 42 46 50 54 58 62
-40 0.479 0 0.522 0.601 0.685 0.775 0.872 0.976 1.091 1.217
-35 0.489 3 0.511 0.588 0.671 0.758 0.853 0.956 1.068 1.191
-30 0.499 6 0.501 0.576 0.657 0.743 0.836 0.936 1.046 1.167
-25 0.509 8 0.491 0.565 0.644 0.728 0.819 0.917 1.025 1.143
-20 0.520 1 0.481 0.554 0.631 0.714 0.803 0.899 1.005 1.120
-15 0.530 4 0.472 0.543 0.619 0.700 0.787 0.882 0.985 1.009
-10 0.540 6 0.463 0.533 0.607 0.686 0.772 0.865 0.966 1.078
-5 0.550 9 0.454 0.523 0.596 0.674 0.758 0.849 0.948 1.058
0 0.561 2 0.446 0.513 0.585 0.661 0.744 0.833 0.931 1.038
5 0.571 5 0.438 0.504 0.574 0.649 0.731 0.818 0.914 1.020
10 0.581 7 0.430 0.495 0.564 0.638 0.718 0.804 0.898 1.002
15 0.592 0 0.423 0.486 0.554 0.627 0.705 0.790 0.883 0.984
20 0.602 3 0.416 0.478 0.545 0.616 0.693 0.777 0.868 0.968
25 0.612 6 0.409 0.470 0.536 0.606 0.682 0.764 0.853 0.951
30 0.622 8 0.402 0.462 0.527 0.596 0.670 0.751 0.839 0.936
35 0.633 1 0.395 0.455 0.518 0.586 0.659 0.739 0.825 0.920
40 0.643 4 0.389 0.448 0.510 0.577 0.649 0.727 0.812 0.906
45 0.653 6 0.383 0.440 0.502 0.568 0.639 0.716 0.799 0.892
50 0.663 9 0.377 0.434 0.494 0.559 0.629 0.704 0.787 0.878
55 0.674 2 0.371 0.427 0.487 0.550 0.619 0.694 0.775 0.864
60 0.684 5 0.366 0.421 0.479 0.542 0.610 0.683 0.763 0.851
65 0.694 7 0.360 0.414 0.472 0.534 0.601 0.673 0.752 0.839
70 0.705 0 0.355 0.408 0.465 0.526 0.592 0.663 0.741 0.827
75 0.715 3 0.350 0.403 0.459 0.519 0.584 0.654 0.730 0.815
80 0.725 6 0.345 0.397 0.452 0.511 0.575 0.645 0.720 0.803
85 0.735 8 0.340 0.391 0.446 0.504 0.567 0.636 0.710 0.792
90 0.746 1 0.335 0.386 0.440 0.497 0.560 0.627 0.700 0.781
95 0.756 4 0.331 0.381 0.434 0.491 0.552 0.618 0.691 0.770
100 0.766 6 0.326 0.376 0.428 0.484 0.545 0.610 0.682 0.760
Table 4-5 Total flooding quantity for IG01 (SI Units)
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NAFFCOInert®
Specific Volume requirements of IG100 per unit volume of Hazard Vagent/Venclosure

Tempera vapour
m3/kg C
T S 34 38 42 46 50 54 58 62
-40 0.682 5 0.523 0.601 0.685 0.775 0.872 0.977 1.091 1.217
-35 0.697 1 0.512 0.589 0.671 0.759 0.853 0.956 1.068 1.191
-30 0.711 8 0.501 0.576 0.657 0.743 0.836 0.936 1.046 1.167
-25 0.726 4 0.491 0.565 0.644 0.728 0.819 0.917 1.025 1.143
-20 0.741 1 0.481 0.554 0.631 0.714 0.803 0.899 1.005 1.120
-15 0.755 7 0.472 0.543 0.619 0.700 0.787 0.882 0.985 1.009
-10 0.770 4 0.463 0.533 0.607 0.686 0.772 0.865 0.966 1.078
-5 0.785 0 0.454 0.523 0.596 0.674 0.758 0.849 0.948 1.058
0 0.799 7 0.446 0.513 0.585 0.661 0.744 0.833 0.931 1.038
5 0.814 3 0.438 0.504 0.574 0.649 0.731 0.818 0.914 1.020
10 0.829 0 0.430 0.495 0.564 0.638 0.718 0.804 0.898 1.002
15 0.843 6 0.423 0.486 0.554 0.627 0.705 0.790 0.883 0.984
20 0.858 3 0.416 0.478 0.545 0.616 0.693 0.777 0.868 0.968
25 0.872 9 0.409 0.470 0.536 0.606 0.682 0.764 0.853 0.951
30 0.887 6 0.402 0.462 0.527 0.596 0.670 0.751 0.839 0.936
35 0.902 2 0.395 0.455 0.518 0.586 0.659 0.739 0.825 0.920
40 0.916 9 0.389 0.448 0.510 0.577 0.649 0.727 0.812 0.906
45 0.931 5 0.383 0.440 0.502 0.568 0.639 0.715 0.799 0.892
50 0.946 2 0.377 0.434 0.494 0.559 0.629 0.704 0.787 0.878
55 0.960 8 0.371 0.427 0.487 0.550 0.619 0.694 0.775 0.864
60 0.975 5 0.366 0.421 0.479 0.542 0.610 0.683 0.763 0.851
65 0.990 1 0.360 0.414 0.472 0.534 0.601 0.673 0.752 0.839
70 1.004 8 0.355 0.408 0.465 0.526 0.592 0.663 0.741 0.827
75 1.019 4 0.350 0.402 0.459 0.519 0.584 0.654 0.730 0.815
80 1.034 1 0.345 0.397 0.452 0.511 0.575 0.645 0.720 0.803
85 1.048 7 0.340 0.391 0.446 0.504 0.567 0.636 0.710 0.792
90 1.063 4 0.335 0.386 0.440 0.497 0.559 0.627 0.700 0.781
95 1.078 0 0.331 0.381 0.434 0.491 0.552 0.618 0.691 0.770
100 1.092 7 0.326 0.375 0.428 0.484 0.544 0.610 0.681 0.760
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NAFFCOInert®

Tempera vapour
m3/kg C
T S 34 38 42 46 50 54 58 62
-40 0.568 17 0.524 0.603 0.688 0.778 0.875 0.980 1.095 1.221
-35 0.563 24 0.513 0.591 0.673 0.761 0.856 0.959 1.072 1.196
-30 0.587 32 0.503 0.579 0.659 0.746 0.839 0.940 1.050 1.171
-25 0.599 40 0.493 0.567 0.646 0.731 0.822 0.921 1.029 1.147
-20 0.611 48 0.483 0.556 0.633 0.716 0.806 0.903 1.008 1.125
-15 0.623 55 0.474 0.545 0.621 0.702 0.790 0.885 0.989 1.103
-10 0.635 63 0.465 0.535 0.609 0.689 0.775 0.868 0.970 1.082
-5 0.647 71 0.456 0.525 0.598 0.676 0.761 0.852 0.952 1.062
0 0.659 79 0.448 0.515 0.587 0.664 0.747 0.837 0.935 1.042
5 0.671 86 0.440 0.506 0.576 0.652 0.733 0.822 0.918 1.024
10 0.683 94 0.432 0.497 0.566 0.640 0.720 0.807 0.902 1.006
15 0.696 02 0.424 0.488 0.556 0.629 0.708 0.793 0.886 0.988
20 0.708 10 0.417 0.480 0.547 0.619 0.696 0.779 0.871 0.971
25 0.720 17 0.410 0.472 0.538 0.608 0.684 0.766 0.856 0.955
30 0.732 25 0.403 0.464 0.529 0.598 0.673 0.754 0.842 0.939
35 0.744 33 0.397 0.456 0.520 0.588 0.662 0.742 0.828 0.924
40 0.756 41 0.390 0.449 0.512 0.579 0.651 0.730 0.815 0.909
45 0.768 48 0.384 0.442 0.504 0.570 0.641 0.718 0.802 0.895
50 0.780 56 0.378 0.435 0.496 0.561 0.631 0.707 0.790 0.881
55 0.792 64 0.373 0.429 0.488 0.553 0.622 0.696 0.778 0.868
60 0.804 71 0.367 0.422 0.481 0.544 0.612 0.686 0.766 0.855
65 0.816 79 0.362 0.416 0.474 0.536 0.603 0.676 0.755 0.842
70 0.828 87 0.356 0.410 0.467 0.528 0.594 0.666 0.744 0.830
75 0.840 95 0.351 0.404 0.460 0.521 0.586 0.656 0.733 0.818
80 0.853 02 0.346 0.398 0.454 0.513 0.578 0.647 0.723 0.806
85 0.865 10 0.341 0.393 0.448 0.506 0.569 0.638 0.713 0.795
90 0.877 18 0.337 0.387 0.441 0.499 0.562 0.629 0.703 0.784
95 0.889 26 0.332 0.382 0.435 0.493 0.554 0.621 0.693 0.773
100 0.901 33 0.328 0.377 0.430 0.486 0.547 0.612 0.684 0.763
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NAFFCOInert®

Tempera vapour
m3/kg C
T S 34 38 42 46 50 54 58 62
-40 0.562 4 0.521 0.600 0.684 0.773 0.870 0.975 1.089 1.214
-35 0.574 3 0.511 0.587 0.669 0.757 0.852 0.954 1.066 1.189
-30 0.586 3 0.500 0.575 0.656 0.742 0.834 0.935 1.044 1.165
-25 0.598 2 0.490 0.564 0.643 0.727 0.818 0.916 1.023 1.142
-20 0.610 2 0.481 0.553 0.630 0.713 0.802 0.898 1.003 1.119
-15 0.622 1 0.471 0.542 0.618 0.699 0.786 0.881 0.984 1.098
-10 0.634 1 0.463 0.532 0.606 0.686 0.772 0.864 0.966 1.077
-5 0.646 0 0.454 0.522 0.595 0.673 0.757 0.848 0.948 1.067
0 0.658 0 0.446 0.513 0.584 0.661 0.744 0.833 0.931 1.038
5 0.669 9 0.438 0.504 0.574 0.649 0.730 0.818 0.914 1.019
10 0.681 9 0.430 0.495 0.564 0.638 0.717 0.804 0.898 1.001
15 0.693 8 0.423 0.486 0.554 0.627 0.705 0.790 0.882 0.984
20 0.705 8 0.416 0.478 0.545 0.616 0.693 0.777 0.868 0.968
25 0.717 7 0.409 0.470 0.536 0.606 0.682 0.764 0.853 0.951
30 0.729 7 0.402 0.462 0.527 0.596 0.670 0.751 0.839 0.936
35 0.741 6 0.395 0.455 0.518 0.586 0.660 0.739 0.826 0.921
40 0.753 6 0.389 0.448 0.510 0.577 0.649 0.727 0.812 0.906
45 0.765 5 0.383 0.441 0.502 0.568 0.639 0.716 0.800 0.892
50 0.777 5 0.377 0.434 0.494 0.559 0.629 0.705 0.787 0.878
55 0.789 4 0.371 0.427 0.487 0.551 0.620 0.694 0.776 0.865
60 0.801 4 0.366 0.421 0.480 0.543 0.610 0.684 0.764 0.852
65 0.813 3 0.361 0.415 0.473 0.535 0.601 0.674 0.753 0.840
70 0.825 3 0.355 0.409 0.466 0.527 0.593 0.664 0.742 0.827
75 0.837 2 0.350 0.403 0.459 0.519 0.584 0.655 0.731 0.816
80 0.849 2 0.345 0.397 0.453 0.512 0.576 0.645 0.721 0.804
85 0.861 1 0.341 0.392 0.446 0.505 0.568 0.636 0.711 0.793
90 0.873 1 0.336 0.386 0.440 0.498 0.560 0.628 0.701 0.782
95 0.885 0 0.331 0.381 0.434 0.491 0.553 0.619 0.692 0.772
100 0.897 0 0.327 0.376 0.429 0.485 0.545 0.611 0.683 0.761
84 Page

NAFFCOInert®
4.2.4. Adjustments
4.2.4.1. Altitude and Temperature Adjustments
According to NFPA 2001 (2015) and ISO 14520 (2000), the design quantity of the extinguishing agent must be
adjusted to compensate only for ambient pressures that vary by more than 11% (equivalent to approximately 1000 m
of elevation change) from standard sea level pressure (1.013 mbar). The ambient pressure is affected by changes in
altitude, pressurization or de-pressurization of the protected enclosure, and weather-related barometric pressure
changes. The quantity of extinguishing agent is determined by multiplying the quantity determined in chapter 4.2.1
by the ratio of the average ambient enclosure pressure to the standard sea level pressure. Correction factors for
gaseous agents are shown in Table 4-9.
Equivalent Altitude Metres Correction factor
- 1000 1.130
0 1.000
1000 0.885
1500 0.830
2000 0.785
2500 0.735
3000 0.690
3500 0.650
4000 0.610
4500 0.565
Table 4-9 Altitude correction factors according to ISO 14520 (2000) and NFPA 2001 (2015)
4.2.4.2. Reserve Quantity

Normally the Authority Having Jurisdiction determines whether a hazard requires a reserve set of NAFFCOInert®
cylinders, either connected to the pipework or spare.
NFPA 2001, Standard on Clean Agent Fire Extinguishing Systems, states: “Reserve Agent Supply. Where required,
a reserve agent supply shall consist of as many multiples of the primary agent supply as the authority having
jurisdiction considers necessary.” “Uninterrupted Protection. Where uninterrupted protection is required, both the
primary and the reserve agent supplies shall be permanently connected to the distribution piping and arranged for
easy changeover.”
4.2.4.3. Unclosable Openings
If there are unclosable openings in an enclosure, the loss of extinguishing agent must be compensated by extending
the discharge time. In order to determine the additional required concentration of extinguishing agent, an integrity
test of the enclosure must be performed to determine the loss through unclosable openings. The loss of
extinguishing agent through unclosable openings can be compensated by extending the discharge time or by
applying additional extinguishing agent.
NOTE:
According to NFPA 2001 (2015), 95% of the extinguishing agent design concentration must be
discharged within 60 seconds for Class B fuel hazards, and 120 seconds for Class A surface
fire hazards or Class C hazards from the start of the discharge.
85
NOTE:
According to NFPA 2001 (2015), the maximum permitted time to extinguish a fire is 30
Page
seconds, after the end of the discharge.

NAFFCOInert®
4.2.4.4. Relief Devices to Avoid Overpressure

Special consideration must be given to inert gas systems with extinguishing agent concentrations greater than 10
percent where the concern exists that the high concentration can result in significant overpressure in the enclosure
during discharge. In order to compensate an eventual overpressure and to avoid damage to the enclosure and
equipment in the enclosure, suitable pressure relief devices must be provided. If any excessive (positive or negative)
pressure in the enclosure, the vent openings shall be ducted directly to a safe location outdoors.
4.3. Selection of Cylinders
 Define the pressure of the system (200 bar or 300 bar)
 Define the size of the cylinders
 Define how many cylinders are required
NOTE:
67, 68, 80 and 140 litres NAFFCOInert® cylinders are available for the 200 bar System.
67, 68, 80 and 140 litres NAFFCOInert® cylinders are available for the 300 bar System.
NOTE:
Only one cylinder size and one system pressure must be used in a NAFFCOInert® system.
Components must agree to the chosen system pressure (200 or 300 bar). The cylinders are
factory-filled.
NOTE:
The NAFFCOInert® cylinders must not be combined with components produced by other
manufacturers than National Fire Fighting Manufacturing FZCO. The use of non-genuine
NAFFCO components shall be considered as improper use. We accept no liability.
Cylinder capacity Extinguishing agent filling mass in kilogram at 15°C

IG01 IG100 IG55 IG541
67 litres, 200 bar 23.87 14.97 19.17 20.08
67 litres, 300 bar 34.18 20.67 26.92 27.82
68 litres, 200 bar 24.23 15.20 19.46 20.38
68 litres, 300 bar 34.69 20.98 27.33 28.24
80 litres, 200 bar 28.50 17.88 22.89 23.98
80 litres, 300 bar 40.81 24.68 32.15 33.22
140 litres, 200 bar 49.88 31.29 40.06 41.96
140 litres, 300 bar 71.41 43.19 56.26 58.14
Table 4-10 Filling mass of NAFFCOInert® cylinders at 15°C
The filling tolerance for each cylinder is +0 / -2.5 % of the nominal filling pressure.
86 Page

NAFFCOInert®
4.3.1. Dependency of the Pressure Inside the Cylinder and the Ambient Temperature
The filling pressure of 200 bar or 300 bar is measured at 15°C according to international standards. The pressure
inside the cylinder depends on the ambient temperature.
Figure 4-1 Temperature/pressure graph for IG01
87 Page

NAFFCOInert®
4.3.2. Define the Number of Cylinders

The number of required NAFFCOInert® cylinders is determined from the adjusted design quantity with the following
formula.
N = Qadj / Qcyl
Definitions:
N : Number of cylinders
Qadj : Design quantity adjusted in kg
Qcyl : Filling mass of cylinder, in kg
If the result has decimal places, the result must be rounded up to the next whole number.
4.3.3. Check of the Final Oxygen Concentration
As only completely filled cylinders can be used, the achieved extinguishing agent concentration is higher than the
design concentration. The maximum achievable concentration is thus depending on the design concentration,
volume of the enclosure, cylinder pressure and cylinder size.
The oxygen concentration is automatically calculated by the VdS calculation software. Check that the calculated
oxygen concentration is above NOAEL or LOAEL on the minimum and maximum anticipated hazard temperature.
4.4. Limitations
4.4.1. Limitations - Cylinders

 The floor of the storage room must be able to carry the weight of the filled cylinders.
Weight per metre of 67 litres cylinders 200 bar cylinders 300 bar cylinders
Single Row 310 kg 390 kg
Double Row 620 kg 780 kg
Table 4-11 Storage floor loading capacity for 67 litres cylinders per metre
Single row 485 kg 530 kg
88
Double row 964 kg 1060 kg

Page

NAFFCOInert®
Single Row 690 kg 750 kg
Double Row 1380 kg 1500 kg
 Cylinders must be located as close as possible to the protected areas.

 Cylinders and components must be located and arranged so that inspection, testing, recharging, and main-
tenance activities are facilitated and interruption of protection is held to a minimum.
 If the cylinders are located outside a protected area, they must be located as close as possible to the protected
area in an easily accessible location and they must be effectively ventilated.
 Cylinders must not be exposed to ambient temperatures exceeding 65°C (149°F).
CAUTION!
Do not store cylinders so that they can be rendered inoperable or unreliable due to
mechanical damage or harsh weather conditions or exposure to chemicals or by any other
foreseeable cause.
If the exposure of the cylinders to such conditions is unavoidable then suitable enclosures or
protective measures must be employed.
NOTE:
Each NAFFCOInert® cylinder has a permanent marking specifying the kind of extinguishing
agent (IG01, IG100, IG55 and IG541), the pressurization level of the NAFFCOInert® cylinder
and nominal volume of extinguishing agent.
4.4.2. Define the Pipework and the Location of the Pipework
 Define the minimum and maximum height of the ceiling
 Define the dimensions of all pipework sectors
 Define the size of the pipes
 Define the number of the pipes
 Define the location of all fittings
 Define the number of all fittings
 Define the pipe supports
The pipework between the connected cylinders and the nozzles must be by the shortest route, with a minimum of
fittings. Every attempt must be made to keep the system in reasonable balance by supplying the nozzles from a
central point, if this can be done without substantially increasing the length and volume of the pipes. The maximum
pipe run permissible will be almost proportional to the total quantity of the extinguishing agent to be discharged. All
elevation changes in the pipework must be clearly indicated so that these will not be overlooked in the flow
calculations.
4.4.3. Define the Nozzles and the Location of the Nozzles
 Define the minimum and maximum height of the ceiling
 Define the location of the nozzles
 Define the nozzle area coverage
 Define the number of nozzles
 Define the size of nozzles
The nozzle is the ultimate device that distributes the extinguishing agent to the protected area. The nozzle flow rate
89
depends upon the velocity, pressure and density of the extinguishing agent as it enters the nozzle. The flow rate
Page
from each nozzle is limited to the amount of flow that the pipeline can deliver to the nozzle.

NAFFCOInert®
4.4.3.1. Limitations - Nozzles and the Location of the Nozzles

 The maximum protected area per nozzle is 100 m2.
 The maximum height covered by one nozzle is 5m. If the ceiling height exceeds the maximum allowable ceiling
height of 5 m, multiple levels of different heights for nozzles must be designed into the system.
 The maximum distance between two nozzles is 10 m.
 The minimum ceiling height is 0.3 m. (false ceiling/ sub floor / trench void)
 Nozzles must be mounted vertically to the ceiling or subfloor surface and oriented with the orifices radiating
symmetrically outward from the pipework.
 If the enclosure is not rectangular, a second nozzle must be installed, even if the enclosure is smaller than the
maximum protected area of 100 m2 per nozzle. Refer to figure 4-5.
Figure 4-5 Nozzle placement in a non-rectangular enclosure
Nozzle Location:
Nozzles must be located symmetrically or almost symmetrically within the protected area. The nozzle are designed
to be located above or close to the centre line of the protected area to discharge towards the perimeter of the area
covered.
90
Figure 4-6 Nozzle location

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NAFFCOInert®
Maximum Cover Height:

An additional level of nozzles is required for rooms with a ceiling height of more than 5 metres. If the ceiling height
exceeds 5 metres nozzles must be installed at several levels.
Figure 4-7 Example of pipework with one discharge level
91
Figure 4-8 Example of pipework with two discharge levels

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NAFFCOInert®
Obstructions to Nozzle Discharge:

Consider when planning the location of nozzles: obstructions such as racks, beam, cable trays and tall items of
equipment in a room have the potential to disrupt the flow pattern of the extinguishing agent from the nozzle. If the
flow of the extinguishing agent is forced down to the floor, for example, it is unlikely that concentration will be
achieved at the mid or upper elevations. Certainly uniform dispersion and concentration will not be achieved.
This position of the nozzles is

NOT recommended
Figure 4-9 Example of nozzle discharge with obstructions
This position of the nozzles

is recommended
Figure 4-10 Example of nozzle discharge without obstructions
 Obstructions located near the nozzle could impede the discharge of extinguishing agent and can affect the
distribution of the extinguishing agent within the enclosure. Obstructions i.e ducts, cables, trays, large conduits,
and light fixtures can disrupt the flow pattern of the extinguishing agent from the nozzles. If the flow of the
extinguishing agent is forced down to the floor, for example, it is unlikely that required concentration will be
92
achieved at the mid or upper elevations. Certainly a uniform dispersion and concentration will not be achieved.
Page

NAFFCOInert®
NOTE:
The number, placement and type of the nozzles must ensure that the design concentration will
be distributed in all parts of the protected area. The extinguishing agent must not splash
flammable liquids or create dust clouds that could extend the fire, create an explosion, or
otherwise adversely affect the contents or integrity of the protected area.
4.4.4. Limitations According to UL Certification (UL2127)
1. Description of the general principles utilized in the calculation method
Refer to the formula for the calculation of the minimum design concentration in chapter 4.2.1.
The complexity of the NAFFCOInert® System does not allow for any simple method of manual calculation.
Therefore, the flow calculations and design criteria described in this manual have been incorporated into a VdS
calculation software. The calculations are based on conserving mass, energy and momentum in the pipework.
The routine calculates the flow in quasi-steady state steps from the initiation of the discharge to the final gas
distribution. The system designer must become thoroughly familiar with this manual in order to learn the proper
procedures for applying the input parameters to the NAFFCOInert® System flow calculation software. There are a
number of limitations to these input parameters which must be observed if accurate results are to be obtained.
2. Limitation of the cylinder volume to the pipe volume ratio
The highest ratio is 94.8% (when expressed as the pipe volume (in L) divided by the extinguishing agent free
volume at 21°C/70°F (in m3) multiplied by 100).
3. Limitation of minimum and maximum pipeline flow rates
Pipe Flow Limit Summary
Pipe size
½” ¾” 1” 1¼” 1½” 2” 2½” 3” 4” 5” 6”
in inch
Minimum
0.0386 0.0677 0.1097 0.1899 0.2585 0.4262 0.6079 0.9388 1.6155 2.5404 3.6683
flow kg/s
Maximum
0.7802 1.3687 2.2181 3.8380 5.2252 8.6139 12.287 18.974 32.673 51.3473 74.1451
flow kg/s
Table 4-14 Minimum and maximum pipeline flow rates
4. Limitations regarding the types of tee splits (for example: bullhead or side outlet) and attached fittings
The intended range of flow splits and information on the orientation, installation, and critical length for each type
of split. The type of splits covered are side/through and bullhead orientations. Since this is for inert gas, the tee
orientation can be in any direction.
Bullhead tee split limits Side/through split limits
Minimum split 50% / 50% 20% / 80%
Maximum split 13% / 87% 60% / 40%
Since bullhead tee outlets are symmetrical, For side tees the side split is references
either of them can be the major/minor flow. first with the through split referenced
second. So the side can handle between
20% and 60% of the extinguishing agent
split, while the through can handle between
80% and 40% of the extinguishing agent
93
split.
Table 4-15 Bullhead tee split limits and side/through split limits
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NAFFCOInert®
BULL TEE BULL TEE FLOW BULL TEE FLOW

SPLIT LIMITS SPLIT LIMITS
OUT OUT OUT -50% OUT -50% OUT -87% OUT -13%
BULL TEE BULL TEE

MINIMUM MAXIMUM
UNBALANCE UNBALANCE
IN IN -100% IN -100%
SIDE TEE SIDE TEE FLOW SIDE TEE FLOW

SPLIT LIMITS SPLIT LIMITS
IN OUT IN -100% OUT -80% IN -100% OUT -40%
SIDE TEE SIDE TEE

MINIMUM MAXIMUM
UNBALANCE UNBALANCE
OUT OUT -20% OUT -60%
Figure 4.11 Limitations tee splits
5. Limitations on conditions that result in an extinguishing agent time imbalance condition at each nozzle, for
example, limits on the variance for extinguishing agent arrival time and run-out time between nozzles
Use the VdS calculation software limitations for maximum difference in transport time as the limitation that
addresses both arrival and run-out imbalances. For the testing conducted, the limit would be 14.05 second.
6. Limitations due to minimum design nozzle pressure
Type of gas Pressure (bar) determined by Class A and B fire tests
IG01 41.02
IG100 21.0
IG55 22.8
IG541 21.3
Table 4-16 Minimum design nozzle pressure
7. Method for determining nozzle orifice area and selection of nozzle, as well as nozzle flow information, limits for
minimum and maximum nozzle orifice area in relation to the attached pipe area
The method to determine the nozzle orifice area is usually done by the VdS calculation software, so this part of
the UL requirements will be taken care of in your calculation examples.
 minimum area ratio as 0.01733 or 1.7%
 maximum area ratio as 0.25641 or 25.6%
94
8. Nozzle area coverage limitations and information on location of nozzle in the protected area
Page
Refer to chapter 4.4.3 and chapter 4.4.3.1.

NAFFCOInert®
9. Filling weights or volumes of each size cylinder

Refer to table 4-10
10. Minimum and maximum design discharge time
The minimum discharge time would be 23.8 seconds based on the VdS calculation software tests, and 60
seconds (Class B fire) or 120 seconds (Class A fire and Class C fire) based on the fire tests (95% of the
extinguishing agent mass).
11. Operating temperature range limitations
The NAFFCOInert® System operates safely at temperatures from - 20°C to +65°C (-4°F to +149°F).
12. Description of the design of a NAFFCOInert® System including a sample calculation including all VdS calculation
software input screens and the resulting hydraulic calculation report
Refer to chapter 4.5
13. Equivalent length values of all fittings and all system equipment through which the extinguishing agent flows
The resistance coefficient is integrated automatically into the VdS calculation software.
14. Limitation master cylinder
One master cylinder will be open upto 45 slave cylinders. Additional master cylinder required for every 45
slave cylinders.
4.5. VdS calculation software for gas extinguishing systems
The basis for an optimal application of inert gas fire extinguishing systems are the hydraulic equations combining the
technical data of the installation components (pipe diameters, nozzle placement, resistance coefficients etc.) with the
specific properties of the extinguishing agent and the physical conditions during the discharge (e.g. pressure in the
pipes and at the nozzles, temperature).
From all this results the data necessary for the installation, such as discharge time, nozzle orifices, pipe diameters
and recommendations for pressure relief devices.
The VdS calculation software allows you to calculate inert gas extinguishing installations of very different
construction. Your input of flooding areas, gas storage, and pipework will be saved in project files which the program
accesses for any calculation. You can modify these parameters anytime and make a recalculation of any system
with altered parameters to see the effects on the discharge time or on the distribution of the extinguishing agent
amongst the nozzles. The results can be printed or viewed on screen.
For the intended purpose of the VdS calculation software it is necessary that the user of the VdS calculation software
has the required knowledge of inert gas extinguishing systems and of the state of the art of the field of inert gas
extinguishing systems and that the user creates NAFFCOInert® System layouts which represent this knowledge.
Below you find an overview of the functions of the VdS calculation software.
Quantity calculation for IG01, IG100, IG55 and IG541 according to the regulations:
 VdS 2380 Fire Extinguishing Systems using non-liquefied Inert Gases
Dimensioning
 of a completely entered pipework

 Pipe diameter, grading according to pipe catalogue
95
 Nozzle orifice diameters

Listing of the required material: pipes, fittings, nozzles
Page
 Graphic display of the pipework

NAFFCOInert®
 Calculation of O2 and CO2 concentrations in the flooded area after the discharge
 Calculation of a recommended value for the pressure relief opening
Recalculation of a completely entered installation
 Dynamic flooding
 Quantity per nozzle
 Discharge time and maximum mass flow
 Recommended value for the pressure relief opening,
 Calculation of O2 and CO2 concentrations in the flooded area after the discharge
Required Input
 Layout of the pipework
 Discharge time
 Storage of cylinders (Container):
- Volume
- Filling pressure at 15°C
- Number of cylinders
- Storage temperature
 Component, pipe, and nozzle data:
- Resistance coefficients of combinations of valves, discharge hoses and check valves.
- Nozzle coefficients
 Nozzles
- Nozzle type
- Number of nozzle orifices for each nozzle
 Pipes
- Pipe type
- Length
 Fittings
4.5.1. Quick Start Guide of the VdS Calculation Software

In the following chapters, we perform a sample calculation for the protection of an enclosure with the VdS calculation
software.
NOTE:
For detailed information about the VdS calculation software and its use, refer to the software
manual of the VdS calculation software.
Example:
 Our sample enclosure is a computer room with the dimensions 7 m x 8 m x 2.5 m, the volume of the room is
140m3.
 The computer room has no subfloor and no false ceiling.
 The highest admissible overpressure in the enclosure is 1 mbar (100 Pa).
 The ambient temperature in the enclosure is 20°C.
 IG541 is used as extinguishing agent
The calculation is according to NFPA 2001 guidelines.
Pipes: schedule 80
96 Page

NAFFCOInert®
4.5.1.1. Project - Input Screen

The tab “Project” provides general information on the respective project. Enter your project information like name of
the project, project number, building, object etc.
Figure 4-12 Project input screen VdS calculation software
97 Page

NAFFCOInert®
4.5.1.2. Sections Graphic - Input Screen

The pipework must be divided into sections and clearly identified for flow calculation purposes. Each section must be
determined by a starting node and an end node.
A new section of the pipework is identified whenever there is a change in the size of a pipe or change of flow rate or
elevation. A pipe section ends at the junction of each fitting in the pipework. Fittings are included in the sections that
follow them.
The length of one section (length between two nodes) must not exceed 20m. If sections are longer than 20m, they
must have node points every 20m.
Figure 4-13 Sections graphic input screen VdS calculation software
98 Page

NAFFCOInert®
4.5.1.3. Calculation Zones - Input Screen

The protected enclosure, in this case our computer room, is calculated on the input screen “Calculation zones”.
If there are several protected enclosures, the VdS calculation software, calculates the design quantity for each
enclosure separately. In each calculation zone, the extinguishing agent is distributed equally among all nozzles
assigned to the calculation zone.
1. Enter the volume of the enclosure in m3 in the line “Total volume”, in our example 140m3. The “Total surface of the
zone” (total surface of the enclosure) is automatically calculated by the VdS calculation software.
2. Enter the highest admissible overpressure in the enclosure (1 mbar or 100 Pa in our example) in the line “Max.
overpressure”.
3. Enter the temperature in the protected enclosure in the line “Design temperature”.
4. Select the assigned nozzles for the project.
5. Enter the extinguishing agent concentration in the line “Extinguishing concentration CL”.
6. Select the class of fire at the end of the line “Design (safety) factor DF”.
Figure 4-14 Calculation zone input screen VdS calculation software

99 Page

NAFFCOInert®
4.5.1.4. Storage - Input Screen

Now, we define the storage conditions of the extinguishing agent on the tab “Storage”.
In our example, we assume that:
 the storage quantity (design quantity plus safety factor) is stored in 2 cylinders with a volume of 140 litres at an
absolute filling pressure of 309 bar
 the filling temperature is 15°C and the storage temperature 20°C
 the discharge time is 120 seconds
The “Container storage pressure” (absolute pressure) and the “Gas mass in one container” are automatically
calculated by the VdS calculation software.
Figure 4-15 Storage input screen VdS calculation software
100 Page

NAFFCOInert®
4.5.1.5. Gas Calculation Report

When all data is entered in the VdS calculation software, you can generate a hydraulic calculation report.
The hydraulic calculation report contains the following information:
 Project information: General information and error messages (for example discharge time exceeds the
maximum allowed discharge time, pressure in the pipe to high, etc.)
 Input data : Your input data
 Calculation results: The designed system, to be evaluated
 The points for you to check are :
- the calculated diameters of the pipes
- the calculated diameters of the nozzle orifices
- the calculated discharge time
Figure 4-16 Overpressure VdS calculation software 101 Page

NAFFCOInert®
VdS SCHADENVERHÜTUNG CEODEUX B08405000 Page: 1

Version: 2.2.01
Licenced to: NAFFCO ( ULEX 15844 ) Serial no: [dongle]
File: C:\Program Files \VdS Flow Calc \projects\example manual UL- copie.prj - Results 17-07-16
Project:
Project-No:
Building:
Object: COMPUTER ROOM - 140 m3
Contractor:
Owner:
Project engineer:
Date: 17-07-16
Regulation rule for calculation of IG541 quantities: NFPA 2001
Altitude above sealevel: 1m
Atmospheric correction factor: 1.000
Pipe catalogue: Sch40-ANSI.rkl

Component catalogue: Naffco.arm
Nozzle catalogue: Naffco.noz
Error messages:
No error detected
11002
4
8 6
11001
7 5
2
3
1
102 Page

NAFFCOInert®

Version: 2.2.01
Input Data: Pipe System
Section- Starting- Endnode Length Height Pipetype Diameter Fitting Component Nb of containers
No: node Nozzle [m] [m] [mm] ** * code coefficient IG541 quantity
1 0 1 0.40 0.40 12 11.7 - - 2

2 1 2 0.88 0.00 41 26.6 E - -
3 2 3 0.15 0.00 41 26.6 E - -
4 3 4 1.00 1.00 41 26.6 E - -
5 4 5 1.50 0.00 41 26.6 E - -
6 5 6 1.00 0.00 41 26.6 E - -
7 6 7 1.00 0.00 41 26.6 E - -
8 7 8 1.10 0.00 41 26.6 E - -
9 8 11001 0.05 -0.05 30 20.0 T-90° - - 0.00
10 8 9 2.30 0.00 41 20.9 T-0° - -
11 9 11002 0.05 -0.05 30 20.0 E - - 0.00
* C=Component, B=Bend, T=T-Piece, E=Elbow, P=Pressure control valve

** If a pipe diameter is equal zero see the extra table of the calculated diameters
Legend of pipetypes
Type Pipeclass Pipe roughness
12 Hoses and Ball Valves hose
41 Galv. Sch40 pipe ANSI B36.10 ASTM A53/A106 grade B galvanized
30 Nozzles smooth
Nozzle data:
No. Calculation zone Diameter [mm]

11001 ROOM VOID 9.0
11002 ROOM VOID 9.0
Legend of nozzles:
Type Number C1 C2 C3 C4 C5 C6
of orifices
1 Naffco Inert Nozzle 1 -0.40000 0.00810 0.00330 0.00000 0.00000 0.00000
103 Page

NAFFCOInert®

Version: 2.2.01
Calculation zone data:
Calculation of design quantity:
Zone Total Volume of Calculated Total Max. Over- Design Extinguish- Design Design Design
volume building volume surface pressure temp. conc. factor conc. quantity
[m³] parts [m³] [m³] [m²] [mbar] [°C] [% Vol] [% Vol] [kg]
1 ROOM VOID 140.0 0.0 140.0 0.0 1.000 20.0 28.5 1.35 38.5 96.43

Calczone no. 1: (Class C Fire)
Altitude above sealevel: 1.0 m
IG541 storage input data:
Container volume: 140.0 l

Container filling pressure: 300.0 bar abs
Container filling temperature: 15.0 °C
Storage temperature: 20.0 °C
Supplement factor: 1.00
Number of containers: 2
Discharge time (input value): 120.0 s 104 Page

NAFFCOInert®

Version: 2.2.01
Calculation results:
IG541 design data:
Design quantity: 96.43 kg
Minimum storage quantity: 96.43 kg
Container pressure: 308.9 bar abs
IG541-mass in one container: 58.2 kg
Actual storage quantity: 116.4 kg
Discharge time:
Discharge time : 92.1 s
System information:
Pipe system working pressure: 31.9 bar abs
Container working pressure: 216.2 bar abs
Total network volume: 4.2 l

Version: 2.2.01
File: C:\Program Files (x86)\VdS Flow Calc \projects\example manual UL- copie.prj - Results 17-07-16
Pipe system pressures during the controlled phase of the discharge 39.1 seconds after start
Section- Starting- Endnode Pressure Temperature Flowrate Pipedimension

No: node Nozzle [bar abs] [°C] [kg/s] Di [mm] DN
1 0 1 155.4 -14.1 0.50 11.7 CEODE

2 1 2 31.1 -58.2 0.99 26.6 1
3 2 3 30.8 -58.2 0.99 26.6 1
4 3 4 30.4 -56.1 0.99 26.6 1
5 4 5 30.0 -53.0 0.99 26.6 1
6 5 6 29.6 -51.0 0.99 26.6 1
7 6 7 29.2 -49.2 0.99 26.6 1
8 7 8 28.7 -47.3 0.99 26.6 1
9 8 11001 28.1 -47.0 0.50 20.0 3/4 N
10 8 9 28.2 -39.9 0.49 20.9 3/4
11 9 11002 27.9 -39.9 0.49 20.0 3/4 N
105 Page

NAFFCOInert®
Version: 2.2.01
Nozzle data:
Calculation- Nozzle Nozzle Number of Pipeconnection Orifice IG541 out-

zone no: no. type orifices Di [mm] DN [mm] put [kg]
1 11001 1 1 20.0 3/4 N 9.0 59.2

1 11002 1 1 20.0 3/4 N 9.0 57.2
IG541 distribution by calculation zone
Calculation zone Number of 100% design 95% design Calculated

nozzles quantity [kg] quantity [kg] total output [kg]
1 ROOM VOID 2 96 92 116
Max. transport time difference between nozzles 11002 and 11001 is 0.09 s

Version: 2.2.01
File: C:\Program Files (x86)\VdS Flow Calc \projects\example manual UL- copie.prj - Results 17-07-16
Concentrations:
Calculation- Gascomposition after the discharge of the design quantity [%]

zone no: O2 CO2 AR N2
1 12.9 3.1 16.0 68.0
Total flooded design quantity within discharge time: 96.43 kg
Calculation- Gascomposition after total discharge [%]

1 11.7 3.5 18.3 66.5
Total flooded IG541 mass: 116.0 kg
Pressure relief opening:

106
Calculation- Recommended area against overpressure

zone no: Area [m²] Overpressure [mbar] Max. flow [kg/s]
Page
1 0.082 1.0 0.99

NAFFCOInert®

Version: 2.2.01
Component list:
Nozzle-type Number C1 C2 C3 C4 C5 C6
1 2 -0.40000 0.00810 0.00330 0.00000 0.00000 0.00000
Pipe-type Di [mm] DN Length [m]
12 11.7 CEODE 0.400

41 26.6 1 6.600
30 20.0 3/4 Nozz 0.200
41 20.9 3/4 2.300
Number of bends (+) and elbows (-)
Bend-type Di [mm] DN Number
-90 26.6 1 7
-90 20.0 3/4 Nozz 1
Number of T-distributors (in- and outdiameter)
Number Input 90-out 90-out 0-out
1 26.6 20.0 0.0 20.9
107 Page

NAFFCOInert®

Version: 2.2.01
Dynamic flooding results

The calculation bases on a mean nozzle pressure!
Flooding Storage Flooded Flow Storage Pressure downstream Pressure at

time [s] mass [kg] ratio [%] [kg/s] pressure [bar] control valve [bar] nozzle [bar]
0.0 116.4 0.0 0.00 308.9 1.0 1.0

2.6 113.6 2.9 1.00 296.0 31.7 28.0
2.8 113.3 3.2 1.00 294.8 31.7 28.0
3.1 113.1 3.4 1.00 293.6 31.7 28.0
5.1 111.1 5.5 0.99 281.4 31.7 28.0
7.1 109.1 7.6 0.99 275.0 31.7 28.0
9.1 107.1 9.6 0.99 265.7 31.7 28.0
11.0 105.1 11.7 0.99 254.0 31.7 28.0
16.0 100.2 16.8 0.99 233.7 31.7 28.0
21.0 95.2 22.0 0.99 217.5 31.7 28.0
26.0 90.2 27.2 0.99 198.1 31.7 28.0
31.0 85.3 32.2 0.99 181.7 31.7 28.0
36.0 80.3 37.4 0.99 165.3 31.7 28.0
41.0 75.4 42.5 0.99 149.3 31.7 28.0
46.0 70.4 47.7 0.99 135.0 31.7 28.0
51.0 65.5 52.8 0.99 123.5 31.7 28.0
56.0 60.5 58.0 0.99 110.9 33.7 29.7
61.0 55.5 63.2 0.99 97.0 37.9 33.5
66.0 50.6 68.2 0.99 86.1 41.0 36.3
71.0 45.6 73.4 0.99 76.6 43.3 38.4
76.0 40.7 78.5 0.99 66.6 40.1 35.5
81.0 35.7 83.7 0.99 55.8 37.2 32.9
86.0 30.7 88.9 0.99 47.1 34.4 30.4
91.0 25.8 93.9 0.99 38.1 32.2 28.4
96.0 20.8 99.1 0.98 29.3 28.0 24.6
101.0 16.6 103.5 0.76 22.7 21.4 18.7
106.0 13.3 106.9 0.59 18.1 16.8 14.7
111.0 10.7 109.6 0.47 14.6 13.6 11.9
116.0 8.7 111.7 0.37 12.1 11.1 9.7
121.0 7.0 113.4 0.31 9.9 9.1 7.5
126.0 5.5 115.0 0.30 7.8 7.2 6.1
131.0 4.4 116.1 0.17 6.3 5.8 5.2
136.0 3.7 116.9 0.13 5.3 5.0 4.5
141.0 3.1 117.5 0.11 4.9 4.5 4.0
146.0 2.6 118.0 0.10 4.1 3.8 3.4
Discharge time at valve: 92.1 s

108 Page

NAFFCOInert®
Version: 2.2.01
File: C:\Program Files\VdS Flow Calc \projects\example manual UL- copie.prj - Results 17-07-16
Storage mass [kg] Flooded ratio [%]

125 125
100 100
75 75
50 50
25 25
0 0
0 25 50 75 100 125 150 0 25 50 75 100 125 150
Time [s] Time [s]
Flow [kg/s] Storage pressure [bar]

1.0 350
0.9 300
0.8
250
0.6
200
0.5
150
0.4
100
0.3
0.1 50
0.0 0
0 25 50 75 100 125 150 0 25 50 75 100 125 150
Time [s] Time [s]
Pressure downstream control valve [bar] Pressure at the nozzle [bar]

45 40
40 35
35
30
30
25
25
20
20
15
15
10
10
5 5
0
50 75 100 125 150 0 25 50 75 100 125 150
Time [s] Time [s]
109 Page

NAFFCOInert®

Version: 2.2.01
Licenced to: NAFFCO-AUH ( ULEX 15844 ) Serial no: [dongle]
File: C:\Program Files\VdS Flow Calc\projects\example manual UL- copie.prj - Results 28-11-16
Project:
Project-No:
Building:
Object: Computer Room - 110 m3
Contractor:
Owner:
Project engineer:
Date: 28-11-16
Altitude above sealevel: 1m
Pipe catalogue: Sch40-ANSI.rkl

Component catalogue: Naffco.arm
Nozzle catalogue: Naffco.noz
Error messages:
No error detected
11002
4
8 6
11001
7 5
2
3
110 Page

NAFFCOInert®

Version: 2.2.01
Input Data: Pipe System
Section- Starting- Endnode Length Height Pipetype Diameter Fitting Component Nb of containers
No: node Nozzle [m] [m] [mm] ** * code coefficient IG541 quantity
1 0 1 0.40 0.40 12 11.7 - - 2

2 1 2 0.88 0.00 41 35.1 E - -
3 2 3 0.15 0.00 41 35.1 E - -
4 3 4 1.00 1.00 41 35.1 E - -
5 4 5 1.50 0.00 41 35.1 E - -
6 5 6 1.00 0.00 41 35.1 E - -
7 6 7 1.00 0.00 41 35.1 E - -
8 7 8 1.10 0.00 41 35.1 E - -
9 8 11001 0.05 -0.05 30 20.0 T-90° - - 0.00
10 8 9 2.30 0.00 41 21.0 T-0° - -
11 9 11002 0.05 -0.05 30 20.0 E - - 0.00
* C=Component, B=Bend, T=T-Piece, E=Elbow, P=Pressure control valve

** If a pipe diameter is equal zero see the extra table of the calculated diameters
Legend of pipetypes
Type Pipeclass Pipe roughness
12 Hoses and Ball Valves hose
41 Galv. Sch40 pipe ANSI B36.10 ASTM A53/A106 grade B galvanized
30 Nozzles smooth
Nozzle data:
No. Calculation zone Diameter [mm]

11001 ROOM VOID 10.0
11002 ROOM VOID 10.0
Legend of nozzles:
Type Number C1 C2 C3 C4 C5 C6
of orifices
1 Naffco Inert Nozzle 1 -0.40000 0.00810 0.00330 0.00000 0.00000 0.00000
111 Page

NAFFCOInert®

Version: 2.2.01
Calculation zone data:
Calculation of design quantity:
Zone Total Volume of Calculated Total Max. Over- Design Extinguish- Design Design Design
volume building volume surface pressure temp. conc. factor conc. quantity
[m³] parts [m³] [m³] [m²] [mbar] [°C] [% Vol] [% Vol] [kg]
1 ROOM VOID 110.0 0.0 110.0 0.0 1.000 20.0 28.5 1.35 38.5 75.77

Calczone no. 1: (Class C Fire)
Altitude above sealevel: 1.0 m
IG541 storage input data:
Container volume: 140.0 l

Container filling pressure: 300.0 bar abs
Container filling temperature: 15.0 °C
Storage temperature: 20.0 °C
Supplement factor: 1.00
Discharge time (input value): 60.0 s
112 Page

NAFFCOInert®

Version: 2.2.01
Calculation results:
IG541 design data:
Design quantity: 75.77 kg
Minimum storage quantity: 75.77 kg
Container pressure: 308.9 bar abs
IG541-mass in one container: 58.2 kg
Actual storage quantity: 116.4 kg
Discharge time:
Discharge time : 58.5 s
System information:
Pipe system working pressure: 29.2 bar abs
Container working pressure: 216.2 bar abs
Total network volume: 6.9 l

Version: 2.2.01
Pipe system pressures during the controlled phase of the discharge 31.1 seconds after start
Section- Starting- Endnode Pressure Temperature Flowrate Pipedimension

No: node Nozzle [bar abs] [°C] [kg/s] Di [mm] DN
1 0 1 156.5 -13.6 0.60 11.7 CEODE

2 1 2 28.8 -60.5 1.21 35.1 11/4
3 2 3 28.7 -60.5 1.21 35.1 11/4
4 3 4 28.5 -58.7 1.21 35.1 11/4
5 4 5 28.3 -56.1 1.21 35.1 11/4
6 5 6 28.1 -54.5 1.21 35.1 11/4
7 6 7 27.9 -52.9 1.21 35.1 11/4
8 7 8 27.7 -51.2 1.21 35.1 11/4
9 8 11001 27.4 -50.9 0.62 20.0 3/4 N
10 8 9 27.1 -44.3 0.59 21.0 3/4
11 9 11002 26.6 -44.6 0.59 20.0 3/4 N
113 Page

NAFFCOInert®
Version: 2.2.01
Nozzle data:
Calculation- Nozzle Nozzle Number of Pipeconnection Orifice IG541 out-

zone no: no. type orifices Di [mm] DN [mm] put [kg]
1 11001 1 1 20.0 3/4 N 10.0 59.7

1 11002 1 1 20.0 3/4 N 10.0 56.7
IG541 distribution by calculation zone
Calculation zone Number of 100% design 95% design Calculated

nozzles quantity [kg] quantity [kg] total output [kg]
1 ROOM VOID 2 76 72 116
Max. transport time difference between nozzles 11002 and 11001 is 0.07 s

Version: 2.2.01
Concentrations:
Calculation- Gascomposition after the discharge of the design quantity [%]

1 12.9 3.1 16.0 68.0
Total flooded design quantity within discharge time: 75.77 kg
Calculation- Gascomposition after total discharge [%]

1 10.0 4.2 21.5 64.3
Total flooded IG541 mass: 116.0 kg
Pressure relief opening:
Calculation- Recommended area against overpressure

zone no: Area [m²] Overpressure [mbar] Max. flow [kg/s]
1 0.099 1.0 1.21

114 Page

NAFFCOInert®

Version: 2.2.01
Component list:
Nozzle-type Number C1 C2 C3 C4 C5 C6
1 2 -0.40000 0.00810 0.00330 0.00000 0.00000 0.00000
Pipe-type Di [mm] DN Length [m]
12 11.7 CEODE 0.400

41 35.1 11/4 6.600
30 20.0 3/4 Nozz 0.200
41 21.0 3/4 2.300
Number of bends (+) and elbows (-)
Bend-type Di [mm] DN Number
-90 35.1 11/4 7

-90 20.0 3/4 Nozz 1
Number of T-distributors (in- and outdiameter)
Number Input 90-out 90-out 0-out
1 35.1 20.0 0.0 21.0
115 Page

NAFFCOInert®

Version: 2.2.01
Dynamic flooding results

The calculation bases on a mean nozzle pressure!
Flooding Storage Flooded Flow Storage Pressure downstream Pressure at

time [s] mass [kg] ratio [%] [kg/s] pressure [bar] control valve [bar] nozzle [bar]
0.0 116.4 0.0 0.00 308.9 1.0 1.0

2.2 113.3 4.1 1.21 295.1 29.1 27.0
2.5 113.0 4.5 1.21 293.6 29.1 27.0
2.7 112.7 4.9 1.21 292.1 29.1 27.0
3.0 112.4 5.3 1.21 290.9 29.1 27.0
5.0 110.0 8.4 1.21 278.9 29.1 27.0
7.5 107.0 12.4 1.21 266.8 29.1 27.0
9.5 104.5 15.7 1.21 252.9 29.1 27.0
11.0 102.1 18.9 1.21 241.8 29.1 27.0
16.0 96.1 26.8 1.21 221.5 29.1 27.0
21.0 90.1 34.7 1.21 196.3 29.1 27.0
26.0 84.0 42.8 1.21 177.7 29.1 27.0
31.0 78.0 50.7 1.21 156.7 29.1 27.0
36.0 72.0 58.6 1.21 139.4 29.1 27.0
41.0 65.9 66.6 1.21 124.0 29.1 27.0
46.0 59.9 74.6 1.21 109.6 31.5 29.3
51.0 53.9 82.5 1.21 94.7 36.5 34.0
56.0 47.8 90.5 1.21 80.6 41.0 38.2
61.0 41.8 98.5 1.21 68.4 39.4 36.7
66.0 35.8 106.4 1.21 56.1 35.4 32.9
71.0 29.7 114.4 1.21 45.2 31.4 29.1
76.0 23.7 122.3 1.21 34.6 29.4 27.2
81.0 17.7 130.3 1.15 24.7 23.1 21.4
86.0 13.2 136.2 0.77 18.0 16.6 15.3
91.0 10.0 140.4 0.57 13.8 12.6 11.7
96.0 7.5 143.7 0.44 10.5 9.8 9.1
101.0 5.7 146.1 0.32 8.1 7.4 6.7
106.0 4.2 148.1 0.26 6.0 5.7 5.3
111.0 3.3 149.3 0.16 5.0 4.6 4.4
116.0 2.6 150.2 0.13 4.2 3.8 3.6
Discharge time at valve: 58.5 s

116 Page

NAFFCOInert®
Version: 2.2.01
Storage mass [kg] Flooded ratio [%]

125 175
150
100
125
75
100
75
50
50
25
25
0 0
0 25 50 75 100 125 0 25 50 75 100 125
Time [s] Time [s]
Flow [kg/s] Storage pressure [bar]

1.5 350
1.3 300
250
1.0
200
0.8
150
0.5
100
0.3
50
0.0 0
0 25 50 75 100 125 0 25 50 75 100 125
Time [s] Time [s]
Pressure downstream control valve [bar] Pressure at the nozzle [bar]

45 40
40 35
35
30
30
25
25
20
20
15
15
10
10
5 5
0 0
0 25 50 75 100 125 0 25 50 75 100 125
Time [s] Time [s]
117
Page

NAFFCOInert®
-
Installation
5. INSTALLATION
The installation of the NAFFCOInert® System must be in accordance with, but not necessarily limited to, the
recommendations of National Fire Fighting Manufacturing FZCO, plus the applicable requirements set forth in the
latest editions of the following standards:
 ISO 14520 Gaseous fire-extinguishing systems
“minimum” installation standards. Also compliance with the Authority Having Jurisdiction must be required and
good engineering practices must be implemented.
The NAFFCOInert® System must be installed to facilitate proper inspection, testing, manual operation, recharging
and any other required maintenance as may be necessary. The NAFFCOInert® System must not be subject to
severe weather conditions or mechanical, chemical or other damage that could render the equipment inoperative.
5.1 Scope
The following installation procedures, should as a minimum, be carried out as described. The procedures together
with commissioning checks are intended to ensure the required designed properties and the correct function/
operation of the installed NAFFCOInert® System. The installer of a NAFFCOInert® System must be familiar with
these procedures. The intentions of the procedures are also to minimize risk to personnel during and after
installation.
5.2 Responsibilities
5.2.1 Responsibilities - Design Engineer
It is the responsibility of the design engineer of a NAFFCOInert® System to ensure that the requirements listed
herein are incorporated in the project documentation and that detailed information and procedures are made
available to the installer.
5.2.2 Responsibilities - Installer
It is the responsibility of the installer that his skilled labour force is presented with this installation instruction and
that detailed information and procedures are explained to the executor.
5.3 Pipework
5.3.1 Selection of Pipework
The correct type and size of pipes and fittings must be selected individually for each system. Temperatures,
operating pressures and ambient conditions must be considered.
According to NFPA 2001 and ISO 14520-1 pipes and fittings must be of noncombustible material with physical and
chemical characteristics such that its integrity under stress can be predicted with reliability. Pipes and fittings
should be made of galvanized steel or copper. Pipes and fittings must be able to withstand the anticipated
pressures and low temperatures.
CAUTION!
Do not use non-metallic pipes and class 150-lb or cast-iron fittings!
CAUTION!
The identification number of each pipe must not be painted over, concealed, or removed!
118 Page

NAFFCOInert®
Installation
CAUTION!
Any deviations in the routing of the pipework or in the number of fittings must be approved by
the design engineer before installation!
CAUTION!
The pipework must not be subjected to mechanical, chemical, vibration or other damages.
The selected piping schedule must always be in accordance with the requirements of the Authority Having
Jurisdiction.
Pressure rated pipes like standard carbon steel pipes, low temperature carbon steel pipes, stainless steel pipes,
pipes according to AISI 304 or AISI 316 can be used for the pipework.
Recommended pipe qualities and fittings are specified below. Fittings must withstand a test pressure of 1.5 times
of the maximum pressure in the pipework.
The wall thickness of alternative pipe qualities shall be calculated in accordance with ASME B31.1. The following
pipes and fittings can be used, for example:
Example 1:
 Pipes: Galvanized welded steel pipes according to DIN 2458, steel 37.2
 Fittings: Malleable Iron ½” to and including 3” acct. DIN 2950/EN 10242 pressure tested at Mill to 100 bar.
Seamless steel fittings to acct. EN 10241 pressure tested at Mill to 150 bar.
Example 2:
 Pipes: Schedule 80, ANSI B 36.10 - 1979, ASTM A 53, Grade B / A 106 Grade B
 Fittings: Malleable Iron Class 300 or Forged Steel Class 2000/3000 Lbs
 Other Pipe and Fittings qualities depending on local regulation
The pipework must be installed so that it cannot be damaged by its own weight, temperature, fluctuations,
vibration, release of the extinguishing agent or other installation inherent or factory influences. All pipework must
be easily accessible and must additionally be secured by pipe supports.
All threads of the pipes and pipe components like fittings, nozzles must be sealed with PTFE tape. PTFE tape
must be applied according to EN 751-3 or other applicable standards.
Pipe diameters must be determined with the VdS calculation software. Ensure that the type and size of the
selected pipes in the VdS calculation software is identical to the pipes installed on-site.
Outside Diameter of Pipe
Pipes Size Hand Tight Engagement Nominal Useful Length
OD
(Inch) (mm) (Inch) (mm) (Inch) (mm) (Inch)
1/2 21.34 0.840 8.13 0.320 13.56 0.5337
3/4 26.67 1.050 8.61 0.339 13.86 0.5457
1 33.40 1.315 10.16 0.400 17.34 0.6828
1 1/4 42.16 1.660 10.67 0.420 17.95 0.7068
1 1/2 48.26 1.900 10.67 0.420 18.38 0.7235
2 60.32 2.375 11.07 0.436 19.22 0.7565
2 1/2 73.02 2.875 17.32 0.682 28.89 1.1375
3 88.90 3.500 19.46 0.766 30.48 1.2000
119
4 114.30 4.500 21.44 0.844 33.02 1.3000

5 141.30 5.563 23.80 0.937 35.72 1.4063
Page
6 168.30 6.625 24.33 0.958 38.42 1.5125

Table 5-1 NPT threads according to ANSI/ASME B1.20.1

NAFFCOInert®
Installation
Pipes Size Outside Diameter Of Pipe OD Hand Tight Engagement Nominal Useful Length
(Not Defined In ISO 7-1)
(Inch) (mm) (Inch) (mm) (Inch) (mm) (Inch)
1/2 21.34 0.840 8.2 0.3228 13.2 0.5197
3/4 26.67 1.050 9.5 0.3740 14.5 0.5709
1 33.40 1.315 10.4 0.4094 16.8 0.6614
1 1/4 42.16 1.660 12.7 0.5000 19.1 0.7520
1 1/2 48.26 1.900 12.7 0.5000 19.1 0.7520
2 60.32 2.375 15.9 0.6260 23.4 0.9213
2 1/2 73.02 2.875 17.5 0.6890 26.7 1.0512
3 88.90 3.500 20.6 0.8110 29.8 1.1732
4 114.30 4.500 25.4 1.0 35.8 1.4095
5 141.30 5.563 28.6 1.13 40.1 1.5787
6 168.40 6.625 28.6 1.13 40.1 1.5787
Table 5-2 R threads according to ISO 7-1
Although the pipework is not subjected to continuous pressurization, care must be taken that the type of pipes
installed can withstand the maximum stress at maximum storage temperatures. According to NPFA 2001 the
maximum allowable stress levels must be established at values of 67% of the minimum yield strength or 25% of
the minimum tensile strength, whichever is less.
5.3.2 Pipe Supports
The pipework must be securely fastenend to pipe supports to prevent unacceptable vertical or lateral movement
during discharge. The pipework must be securely supported with due allowance for extinguishing agent thrust
forces and thermal expansion and contraction. The pipework and pipe supports must not be subjected to
mechanical, chemical, vibration, or other damage. Combustible materials must not be used. Obey also the
standard ASME B31.1, Power Piping Code.
Pipe supports must be connected directly to the structure of the building and must not be used as supports for
other objects. The structure of the building to which the pipe supports are attached, must be strong enough to take
the load.
The low temperature generated during discharge must be taken into account when designing pipe supports. The
pipe supports and their anchors must also be able to withstand static and dynamic loads.
Pipes longer than 1m must be fixed with pipe supports. The maximum distance between two pipe supports along
the pipework must not exceed the values given in table 5-3.
Nominal diameter (mm) Maximum distance between two pipe supports (m)
< DN25 2
DN25 to DN50 3
> DN50 4
Table 5-3 Maximum distance between two pipe supports
120 Page

NAFFCOInert®
Installation
Pipe supports must be fitted 300 mm from a nozzle.
Figure 5-1 Distance between pipe supports and nozzles
Pipe supports must be located between elbows that are 600mm apart.
Figure 5-2 Location of pipe supports and elbows
The distance between a pipe support and the last nozzle must be as short as possible and must not exceed:
• 0.1 m for pipes of a nominal diameter less than DN25
• 0.25 m for pipes of a nominal diameter greater or equal DN25
NOTE:
When selecting pipe supports, consider the galvanic corrosion potential between the selected
materials.
5.3.3 Installation of Pipes
Pipes and fittings must have threads cut to NPT or BSPT threads. The inside of all pipes and fittings must be
smooth, clean, and free from blisters, loose mill scale, sand, and dirt before installation.
PTFE tape must be applied only to the male threads of the pipe, according to EN 751-3 or other applicable
121
standards.
Page

NAFFCOInert®
Installation
NOTE:
Pipes and fittings must be installed in strict accordance with the system drawings. Any
deviations in the routing of the pipes or in the number of fittings must be approved by the
design engineer before installation.
5.3.4 Cleaning of Pipework
Before the installation of nozzles, the pipework must be cleaned. The pipework must be blown free from impurities,
burrs and dirt by using compressed air or dry nitrogen, to ensure that the nozzles will not be obstructed from inside
of the pipework during a discharge.
NOTE:
A certificate, that the pipework has been cleaned, must be issued at the end.
5.3.5 Installation of Nozzles
Nozzles are all delivered with male NPT or BSPT threads. PTFE tape must be applied to the threads according to
EN 751-3 or other applicable standards and tightened with a suitable steel bar.
Nozzles must be installed in such a manner that they cannot detach from the pipework during discharge. Adequate
supports must be provided for nozzles.
During the installation of the nozzles, the pipework must be inspected internally to detect the possibility of any oil
or particulate matter,that could affect the distribution of extinguishing agent by reducing the nozzle orifice diameter
or by clogging the nozzle.
Nozzles must be oriented in such a manner that an optimum extinguishing agent distribution is achieved.
CAUTION!
Do not damage the thread of the nozzle! If the thread is damaged, replace the nozzle!
CAUTION!
The nozzles must be installed such that they will not cause injury to personnel. The
extinguishing agent must not be discharged at head height or below where people in a
normally occupied area could be injured by the discharge. The extinguishing agent must not
directly be discharged on any loose objects or shelves, cabinet tops or similar surfaces where
loose objects could be propelled by the discharge.
NOTE:
Nozzles must be installed in strict accordance with the system drawings. Any deviations in the
location of the nozzles or in the number of nozzles must be approved by the design engineer
before installation.
NOTE:
We recommend to mark each nozzle with a special sealing paint, so that it is possible to find
out if the pipework or the nozzles were manipulated.
5.3.6 Earthing of the Pipework
As the NAFFCOInert® System is used for inerting, the pipework must be adequately bonded and earthed.
Potential equalization conductors between all pipes must be provided, for the simple reason that an electrostatic
charging of conductors not bonded to earth may occur during the discharge of the extinguishing agent. These
conductors may discharge to other objects with sufficient energy to initiate an explosion.
122 Page

NAFFCOInert®
Installation
Figure 5-3 Earthing of pipework
NOTE:
A green/yellow colored wire must be used exclusively for the identification of earthing.
5.3.7 Testing of the Pipework
The pipework must be pneumatically tested in a closed circuit for a period of 10 minutes at 40 psig (276 kPa). After
10 minutes, the pressure drop must not exceed 20 percent of the test pressure.
Exception according to NFPA 2001: the pressure test can be omitted if the total pipework has only one change in
direction between the cylinder and the nozzle, and where the pipework is physically checked for tightness.
A flow test using nitrogen or an inert gas must be performed on the pipework to verify that the flow is continuous
and that the pipework and nozzles are unobstructed.
NOTE:
A discharge test is generally not recommended.
5.3.8 Electrical Clearance
All system components must be located to maintain no less than minimum clearances from energized electrical
parts.
The following references must be considered as the minimum electrical clearance requirements for the installation
of NAFFCOInert® systems:
(1) ANSI C2
(2) NFPA 70
(3) 29 CFR 1910, Subpart S
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NAFFCOInert®
Installation
5.4 Cylinders
5.4.1 Labels and Signs
Cylinders are filled with the extinguishing agent at a National Fire Fighting Manufacturing FZCO manufacturing
facility and labelled with filling, safety, transport, maintenance and warning information.
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NAFFCOInert®
Installation
Labels and Signs
125 Page

NAFFCOInert®
Installation
Labels and Signs
126 Page

NAFFCOInert®
Installation
Labels and Signs
127 Page

NAFFCOInert®
Installation
Labels and Signs
Monthly maintenance:
Compressed gas N.O.S
UN 1006 NAFFCOInert® • Check pressure gauge. If
pressure loss exceeds 5%
(adjusted for temperature)
FACTORY FILLED
SPECIFICATIONS FOR Clean Agent Fire Suppression recharge unit.
MODEL NFIG01-300-140A Semi Annually:
System • Check Pressure gauge. If
TARE WEIGHT pressure loss exceeds 5%
recharge unit.
AGENT WEIGHT ARGON (IG 01) • Check cylinder weight, if

weight loss exceeds 5% of
full weight specified on
70.9 kg
Prior to installation, read and comply with all the NAFFCOInert® Clean Agent Fire label; have an authorized
GROSS WEIGHT Suppression Systems Design, Installation and Maintenance Manual and this label. Only NAFFCO dealer repair and
trained personnel shall store, handle, transport, install, inspect, maintain, and test refill system.
cylinder and components in accordance with: • Check that all parts are
• National Fire Protection Association Standard 2001 Titled: Standard for Clean Agent free from damage,
PRESSURE cylinders are held in place,
Fire Extinguishing Systems.
tubing pipe and nozzles
300 bar • NAFFCOInert® Clean Agent Fire Suppression Systems Design, Installation and are secure and free from
Maintenance Manual. damage and nozzles are
Year of manufacturing
• Systems designed and installed in accordance with the Design, Installation and free from obstructions.
Maintenance Manual for NAFFCOInert ® system; Part No: 027650015-NF • Record date and service
• Suitable for use between -4°F and149°F (-20°C to +65°C). performed on record tag
Filling location • System cylinder has been factory tested to 450 bar (6525 psi) provided.
• Transport and store cylinder in the vertical position only. • Safely restore system to
operating condition.
RECYCLING PROTECTS THE ENVIRONMENT.
CAUTION: Pressurized DO NOT DISPOSE. DISCHARGE ONLY IN CASE OF FIRE.
cylinder capable of violent IF CONTAINER CONTENTS MUST BE REMOVED FOR SERVICE, MAINTENANCE OR
discharge! Never handle or DISMANTLING OF THE CLEAN AGENT SYSTEM - PRIOR TO REMOVAL, CONTACT
transport without safety YOUR LOCAL INSTALLER OR MANUFACTURER FOR INSTRUCTIONS ON HANDLING
devices installed. The EQUIPMENT AND RECLAIMING OR RECYCLING CLEAN AGENT. DO NOT COVER,
pressurized cylinder can be Clean Agent
REMOVE OR DEFACE THIS LABEL.
extremely dangerous and Extinguishing System Unit
can cause property
damage, severe injury or EX15844
death. Safety plugs must WARNING: AVOID EXPOSURE TO VAPORS,
be installed in the
discharge outlets at all
times unless mounted in
FUMES, AND PRODUCTS OF COMBUSTION. 140 L – 300 bar (4350 psi)
the bracket or otherwise Manufactured by:
safely secured. @59°F (15°C)
National Fire Fighting manufacturing FZCO,
PO Box 17014, Dubai, United Arab Emirates. HMIS # 000.
E-mail: info@naffco.com, www.naffco.com Label Pt.# I S 11403360-NF
FACTORY FILLED
recharge unit.
AGENT WEIGHT ARGON, NITROGEN (IG 55) • Check cylinder weight, if

56.0 kg
can cause property
128

be installed in the
Page


NAFFCOInert®
Installation
FACTORY FILLED
recharge unit.
AGENT WEIGHT NITROGEN (IG 100) • Check cylinder weight, if

43.1 kg
can cause property
be installed in the
FACTORY FILLED
recharge unit.
AGENT WEIGHT NITROGEN, ARGON, CO2 (IG 541) • Check cylinder weight, if
58.14 kg
extremely dangerous and
can cause property Extinguishing System Unit
WARNING: AVOID EXPOSURE TO VAPORS,
129
death. Safety plugs must

be installed in the
@59°F (15°C)
Page
safely secured.

NAFFCOInert®
Installation
130
Page

NAFFCOInert®
Installation
Assembly Model Cylinder Label Part Cylinder Cylinder Working Extinguishing

Number Part Number Number Size Radius Pressure Agent
NFIG01-200-067A 0017101-NF 10672267-NF 67 litres 267 mm 200 bar IG01
NFIG01-200-067B 0017102-NF 10672360-NF 67 litres 356 mm 200 bar IG01
NFIG01-200-140 0017105-NF 11402360-NF 140 litres 356 mm 200 bar IG01
131

Page

NAFFCOInert®
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Assembly Model Cylinder Label Part Cylinder Cylinder Working Extinguishing

Number Part Number Number Size Radius Pressure Agent
NFIG01-200-080D 0017101D-NF 50802267-NF 80 litres 267 mm 200 bar IG01
NFIG01-200-068 0017111-NF IS10682267-NF 68 litres 267 mm 200 bar IG01
NFIG55 -200-068 0557311-NF IS30682267-NF 68 litres 267 mm 200 bar IG55
NFIG55 -200-080 0557313-NF IS30802267-NF 80 litres 267 mm 200 bar IG55
NFIG01-300-140A 0018115-NF IS11403360-NF 140 litres 356 mm 300 bar IG01
NFIG55--300--080 0558313--NF IS30803267-NF 80 litres 267 mm 300 bar IG55
NFIG541--300--080 5418413--NF IS40803267-NF 80 litres 267 mm 300 bar IG541
Note: Label Part Nos suffixed with 'IS' is for cylinders manufactured as per IS 7285 Standard and is limited only for UL Listed System
Table 5-4 Part numbers for cylinders & labels depending on extinguishing agent
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NAFFCOInert®
Installation
5.4.2 Additional Safety Precautions for Storage Room and Protected Enclosure
CAUTION!
Attach warning signs to all entrance doors of the gas storage room. The warning sign in
national language and in English must contain the following information:
DANGER!
GAS STORAGE AREA!
NAFFCOInert® FIRE SUPPRESSION SYSTEM
AUTHORISED PERSONNEL ONLY!
Gas storage area!

®
Fire Suppression System
Authorized personnel only!
CAUTION!
Attach warning signs to all entrance doors of the protected enclosures. The warning sign in
national language and in English must contain the following information:
THIS ROOM IS PROTECTED BY A FIRE SUPPRESSION SYSTEM!
LEAVE THE ROOM IMMEDIATELY WHEN ALARM SOUNDS!
This room is protected by NAFFCOInert® Fire

Suppression system! Leave the room immediately
when alarm sounds
CAUTION!
Attach warning signs to all exit doors of the protected enclosures. The warning sign in national
language and in English must contain the following information:
THIS ROOM IS PROTECTED BY A FIRE SUPPRESSION SYSTEM!
LEAVE THE ROOM IMMEDIATELY WHEN ALARM SOUNDS!
TAKE THE EMERGENCY EXITS!
133 Page

NAFFCOInert®
Installation
This room is protected by NAFFCOInert® Fire

Suppression system! Leave the room immediately
when alarm sounds Take emergency exits!
NOTE:
Operating instructions must be permanently fixed inside the storage room in a visually
unobstructed position.
NOTE:
The name of the installer, and the name of the company responsible for maintenance of the
system must be available. Record the year of installation and the date of an essential change.
Instructions for use, and maintenance and relevant data of the installation must always be
available, including a plan of the pipework and plans of the protected areas.
5.4.3 NAFFCOInert® Battery Location
Cylinders must be securely installed and secured according to the installation guidelines in this manual and in a
manner that provides for convenient individual servicing or content weighing.
NOTE:
Before starting with the NAFFCOInert® battery assembly, check the floor and the wall for
unevenness. If there is any unevenness, remove it, so that the NAFFCOInert® battery can be
assembled properly.
NOTE:
At least 600mm (0.6m) of clearance must be in front of the NAFFCOInert® battery in order to
assemble the NAFFCOInert® battery and to exchange a cylinder.
NOTE:
Cylinders must be located and mounted where they will not be accidentally damaged or moved.
If necessary, install suitable protection to prevent the cylinder from damage or movement.
NOTE:
Cylinders must be installed in strict accordance with the system drawings. Any deviations in
the location, size or in the number of cylinders must be approved by the design engineer before
installation.
NOTE:
Cylinders must be located as close as possible to the protected areas.
NOTE:
Cylinders and accessories must be located and arranged so that inspection, testing,
134
recharging, and maintenance activities are facilitated and interruption of protection is held to a
minimum.
NOTE:
Page
Install a thermometer with an accuracy of +/- 1°C at the place where the cylinders are stored.

NAFFCOInert®
Installation
5.5 Wall Mounting Cylinder Support

DANGER!
Do not remove the protection cap until you start with the system assembly, chapter 5.8.
1. Calculate the position for the cylinder wall mounting support (2/3 height of the cylinder).
2. Mark the calculated height for the cylinder wall mounting support with a suitable pen on the wall or solid structure
and drill boreholes.
3. Align the cylinder wall mounting support.
4. Fix the cylinder wall mounting support horizontally to a wall or solid structure using suitable dowels and bolts.
5. Fix an end cap to each end of the cylinder wall mounting support.
Figure 5-4 Installation height of the cylinder wall mounting support
5.6 Manifold Assembly

5.6.1 Manifold Mounting Support
The mounting position of the manifold mounting support depends both on the height of the cylinder and discharge port
of the discharge valve. The distance between the discharge port of the discharge valve and the centre of the
manifold should be approximately 500 mm. Refer to figure 5-5. The upper borehole for mounting the manifold
mounting support must be drilled at this height.
1. Remove the protection cap of one cylinder to measure the height of the discharge port of the discharge valve.
135
NOTE:
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Immediately reinstall the protection cap to the cylinder.

NAFFCOInert®
Installation
2. Calculate the position of the upper borehole of the manifold mounting support.
NOTE:
If necessary, make a pre-assembly with the constant flow and pressure discharge regulator, the
discharge hose, the manifold and the manifold mounting support. Remove the safety/shipping
cap for pre-assembly and immediately reinstall it after pre-assembly.
3. Hold the manifold on the wall or solid structure to mark the boreholes.
NOTE:
The open side of the manifold mounting support must face upwards.
4. Drill the holes at the marked height.
5. Fix the manifold wall mounting support to the wall or solid structure using suitable dowels and bolts.
6. Tighten the bolts. The manifold mounting support must be firmly attached to the wall or solid structure and not be
able to move.
7. When mounting the second manifold mounting support, take care of the correct distance between two manifold
mounting support. The distance between two manifold mounting support depends on the length of the manifold
Refer to table
- . 5-5
Figure 5-5 Distance between the discharge port of the discharge valve and the centre of the manifold
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NAFFCOInert®
Installation
5.6.2 Manifold
The numbers of the following assembly steps correspond to the numbering in figure 5-6.
Figure 5-6 Manifold assembly steps
No. Description Diameter of Cylinders Capacity A

1 Manifold Check Valve 267 67ltr & 80ltr 307
2 Manifold End Cap 356 67ltr, 80ltr & 140ltr 400
3 U Bolt with Nut/ Washer
1. Manifold Check Valve

a. Wrap self-adhesive PTFE tape around the R1” thread of the check valve according to EN 751-3 or any
applicable standard. Stretch the PTFE tape easily while wrapping it around the thread in order to avoid bulges
and to improve adherence.
b. Cut off the PTFE tape cleanly and press it carefully by hand against the thread.
c. Screw a check valve in each manifold inlet connection Rc1” and tighten it according to the Tapered Thread
Port Assembly, appendix page 174-175.
NOTE:
According to NFPA 2001, each manifold inlet must be equipped with a check valve to prevent
loss of extinguishing agent and to ensure personnel safety if the system is operated when any
cylinders are removed for maintenance.
2. Manifold Connector
A manifold connector is used for the connection of two manifolds.
a. Wrap self-adhesive PTFE tape around the each R2” thread of the manifold according to EN 751-3 or any
applicable standard. Stretch the PTFE tape easily while wrapping it around the thread in order to avoid bulges
and to improve adherence.
b. Cut off the PTFE tape cleanly and press it carefully by hand against the thread.
c. Screw the manifold connector to the R2” thread of the first manifold and tighten it by hand.
d. Screw the second manifold into the manifold connector and tighten it according to the Tapered Thread Port
Assembly, appendix page 174-175.
NOTE:
137
Make sure, that all check valves attached to the two manifolds, face in the same direction and
that they are correctly aligned.
Page

NAFFCOInert®
Installation
3. Support for Manifold

a. Put the U bolt for manifold.
b. Push the U bolt for manifold together with the manifold carefully into the manifold mounting support. First tighten
the U bolt for manifold by spanner.
c. Attach an end cap to each manifold mounting support as shown in figure 5-7.
Figure 5-7 Support for Manifold
NOTE:
An adjustment of the manifolds may be necessary when all cylinders are in place.
NOTE:
A special kind of manifolds is equipped with an accessory port, where components like
a pressure relief device for manifold or a pressure and flow detector switch can be
connected to the pipework by using a fitting (refer to chapter 3.10).
5.7 NAFFCOInert® Battery Installation

5.7.1 Single row
1. Put the cylinder on the cylinder wall mounting.
2. Fix the threaded rod with the cylinder into the cylinder wall mounting support.
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NAFFCOInert®
Installation
Figure 5-8 Securely fixed cylinder
5.7.2 Double Row

1. Fit the bolt into profile of the cylinder wall mounting support. Tighten the nut against the washer and use the
support bracket as a template for the exact location of the bolt. Tighten the nut against the washer
2. Put the support bracket on the bolt.
3. For the first row of cylinders, put the cylinders between the support bracket the second row cylinder.
4. Put the outer bracket on the bolt and secure it with a nut.
WALL MOUNTING
SLOTTED CHANNEL
MIDDLE SUPPORT
OUTER
SUPPORT
139 Page
Figure 5.9 Cylinder Double Row

NAFFCOInert®
Installation
5.8 System Assembly
Figure 5-10 System assembly

140Page

NAFFCOInert®
Installation
Position Part
1a / 1b Cylinder 200 Bar or 300 Bar
2a / 2b Discharge Valve 200 Bar or 300 Bar
3 Constant flow and pressure discharge regulator
4 Electromagnetic release device
5 Manual/Pnuematic release device
6 Pneumatic release device
7 Adapter M12x1.5 – G1/8”
8a / 8b Pressure gauge 200 Bar or 300 Bar
9 Bleed valve
10 Discharge Hose
11 Pilot Hose
12 Manifold
13 Manifold Check valve
14 Manifold end cap
15 Manifold Support
16 U Bolt with Nut/ Washer
17 M10 Threaded Rod with Nut/ Washer
18 Wall Mounting Slotted Channel
19 Other Support
20 Base for Manifold Support
21 Threaded Tee
22 Label
Table 5-6 Components for system assembly
1. When all cylinders are securely fastened, remove the protection cap from the cylinder and store it near the
cylinder. Refer to figure 5-11.
DANGER!
The protection cap and the outlet safety plug must be installed on the cylinder at all times,
except when the cylinder is connected to the pipework or when the cylinder is filled or refilled.
2. Remove the red protection cap from the discharge valve. Refer to figure 5-8.
3. Remove the outlet safety plug from the discharge port. Refer to figure 5-8.
4. Make sure, that the discharge port W21.8 x 1/14 inch DIN 477 of each discharge valve is facing to the right. Refer
to figure 5-8.
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NAFFCOInert®
Installation
Figure 5-11 Removal of protection cap and outlet safety plug
5. Mount the constant flow and pressure discharge regulator to the discharge port of the discharge valve. Put a
gasket between the discharge valve and the constant flow and pressure discharge regulator when assembling.
Tighten the constant flow and pressure discharge regulator with a torque of 50 +0/-5 Nm.
NOTE:
The constant flow and pressure discharge regulator is equipped with a connection port for the
discharge hose. The connection port must face upwards. Refer to figure 5-12.
142 Page
Figure 5-12 Connecting the constant flow and pressure discharge regulator to the discharge valve

NAFFCOInert®
Installation
6. Connect the discharge hose to the constant flow and pressure discharge regulator and to the check valve at
the manifold.
. Tighten the swivel nuts of the discharge hose with a torque of 30 - 40 Nm. Refer to figure 5-13.
Figure 5-13 Connecting the discharge hose
7. Before assembling the pressure gauge, make sure that the O-ring seal back-up ring is not damaged. Mount a
pressure gauge (200 bar or 300 bar depending on your system) to the monitoring port of the discharge valve.
The pressure gauge can be turned 360 degrees. Screw in pressure gauge to the monitoring port up to the stop
and turn back a maximum of one turn for correct orientation. The pressure gauge can be mounted and
removed even if the discharge valve is pressurized. If no pressure gauge is mounted the monitoring port of
the discharge valve must be sealed with the screw plug. Refer to figure 5-14.
143
Figure 5-14 Connecting the pressure gauge

Page

NAFFCOInert®
Installation
If a pressure gauge is mounted it must be wired to a supervised circuit in the control panel. The control panel
provides a supervisory signal if the pressure in the cylinder drops. Refer to figure 5-15.
Low pressure switch
• The low pressure switch is closed
Pressure gauge Pressure gauge Pressure gauge under pressure
unit n unit 2 unit 1 • The low pressure switch opens,
when the pressure drops
Panel monitoring
End of line resistor (undelivered)
Figure 5-15 Pressure gauge unit - pressure switch connection
8. Mounting a pneumatic release device on all slave cylinders and tighten the pneumatic release devices with a
torque of 50 Nm 0/-15 Nm. Refer to figure 5-16.
Figure 5-16 Connecting the pneumatic release devices
9. Reset the electromagnetic release device with the reset tool. For resetting screw the reset tool into the bottom
of the electromagnetic release device. Refer to figure 5-17.
DANGER!
Before mounting the electromagnetic release device on top of the master valve, check if the red
marking on the actuating pin is visible! The electromagnetic release device is activated, if the
actuating pin is visible. Reset the electromagnetic release device with the reset tool before
144
mounting. Failure to reset the electromagnetic release device will result in accidental discharge
when the electromagnetic release device is installed on the valve. Personal injury and/or
property damage could occur.
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NAFFCOInert®
Installation
Figure 5-17 Resetting the electromagnetic release device
10. Mount the electromagnetic release device on top of the master valve and tighten it with a torque of 50 Nm 0/-
15 Nm. Refer to figure 5-18.
145
Figure 5-18 Connecting the electromagnetic release device
The electromagnetic release device is operated by an electrical signal from a fire detection system. In order to
Page
actuate the electromagnetic release device a constant DC voltage of 24V is required.

NAFFCOInert®
Installation
Figure 5-19 Connecting the electromagnetic release device to power supply
11. Mount a manual/pneumatic release device on top of the electromagnetic release device and tighten it with a
torque of 50 Nm 0/-15Nm. Refer to figure 5-20.
Figure 5-20 Installation of a manual/pneumatic release device on top of the electromagnetic release device
146 Page

NAFFCOInert®
Installation
12. Mount an adapter with the G1/8” thread to all connections of the pneumatic release devices on the slave
valves, except for the last connection on the last pneumatic release device. Tighten the adapters with a torque
of 8 -10 Nm. Refer to figure 5-21.
Figure 5-21 Connecting adapters and pilot hoses to the pneumatic release devices on the slave valves
13. Connect the pilot hoses between the adapters at the M12x1.5 thread and tighten the pilot hoses with a torque
of 8 - 10 Nm.
14. Screw a bleed valve with the G1/8” DIN ISO 228-1 thread into the connection of the last pneumatic release
device on the last slave valve and tighten it with a torque of 8 - 10 Nm. Refer to figure 5-22.
Figure 5-22 Connecting the bleed valve
CAUTION!
A bleed valve must always be installed at the end of each pilot line! The bleed valve vents an
overpressure in the pilot line and therefore prevents an accidental system release.
NOTE:
The bleed valve is installed at the end of the pilot line or at the last pneumatic release device.
In case of leakage (malfunction) on the master valve, the bleed valve prevents a slow pressure
build-up in the pilot line and therefore prevents an accidental system release. In case of a
normal discharge, the bleed valve closes and allows the pressure to increase in the pilot line
and a release of the slave valves.
15. Remove the safety plug from the port for pilot hose on the master valve and mount an adapter with the G1/8”
thread to the port for pilot hose and tighten it with a torque of 8 -10 Nm. Refer to figure 5-23.
16. Connect a pilot hose between the adapter at the port for pilot hose on the master valve and the adapter at the
pneumatic release device on the first slave valve. Tighten the pilot hoses with a torque of 8 - 10 Nm. Refer to
figure 5-23.
147 Page

NAFFCOInert®
Installation
bleed valve
port for pilot hose
slave discharge valve

master slave discharge valve slave discharge valve
discharge valve
Figure 5-23 Installation of the pilot line
CAUTION!
Do not remove the safety plug from the port for pilot hose on the slave valve!
17. Connect the manifold to the pipework according to the Tapered Thread Port Assembly, appendix page 174-
175.
5.9 Tests and checks before commissioning
This chapter is a guide for final tests and inspections before the NAFFCOInert® System is commissioned.
Commissioning testing must be performed onsite to verify the functionality, continued availability, safety and
efficiency of the NAFFCOInert® System.
The complete system must be tested by qualified personnel to prove the correct operation of all required functions.
All mechanical components must be checked for their suitability for the application and to make sure that the
installation is in accordance with the system listing.
NOTE:
On page 174-175 you find a Commissioning Test for NAFFCOInert® System which guides you
step by step through the commissioning procedure.
5.9.1 Pilot line test
Test the pilot line for complete tightness with an appropriate test unit.
The test unit for the pilot line test consists of a portable high-pressure cylinder (5 l - 200 bar for example) and is
filled with inert gas. The valve of the test unit must be equipped with a pressure reducing unit and with a manual
ball valve and a high pressure flexible hose.
NOTE:
Normally, this type of high-pressure cylinder and pressure reducing unit is available as gas
carrier.
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NAFFCOInert®
Installation
High pressure flexible hose
Hand wheel valve
Pressure reducing unit

(high pressure/low pressure)
High pressure cylinder
Figure 5-24 Test unit
1. Disconnect the pilot hose from the port for pilot hose on the master valve. Refer to figure 5-25.
2. Connect the end of the pilot hose, which was disconnected in step 1, to the high pressure flexible hose of the
test unit and tighten it carefully. Refer to figure 5-25.
3. Open the hand wheel valve of the high pressure cylinder of the test unit and pressurise the pilot line to 3 bar
maximum.
4. When the pilot line is pressurized to 3 bar maximum, close the hand wheel valve of the test unit and the tap of
the pressure reducing unit.
5. Wait for 10 minutes and then check the pressure in the pilot line. If the pressure in the pilot line has not
dropped, the pilot line is free from leakage.
CAUTION!
If the pressure in the pilot line has dropped, there is one or more leakage in the pilot line. In
this case, check all pilot line connections for tightness. Additionally test all pilot line
connections with leak spray. Repeat step 3 - 5 until the pilot line is free from leakage.
6. If the pilot line is free from leakage or if all leakage is eliminated, disconnect the high pressure flexible hose of
the test unit from the pilot line.
7. Connect the pilot hose to the port for pilot hose of the master valve and tighten it with a torque of 8 -10 Nm.
NOTE:
149
We strictly recommend to test all connections of the cylinder/valve assembly with leak spray.
NOTE:
Page
A certificate, that the pilot line test was performed successfully, must be issued at the end.

NAFFCOInert®
Installation
Figure 5-25 Pilot Line Test
5.9.2 Electrical test of the system

The NAFFCOInert® System must be electrically tested before it is commissioned. All electrical functions of the
NAFFCOInert® System must be tested.
5.9.3 Commissioning Checklist

After the NAFFCOInert® System installation is completed, Perform the following inspections and tests (on pages
134-140) you find a Commissioning check list for NAFFCOInert® System which guides you step by step through
the commissioning procedure.
1. Make sure that the pressure gauges of the cylinders indicate the correct pressure and that they are installed in
accordance with the installation drawings.
2. Make sure that all cylinders are securely fastened in the wall for cylinder and that all cylinder wall mounting
support are properly installed.
3. The pipework must be inspected for compliance with the system drawings, NFPA 2001 or ISO 14520-1 as
appropriate, design limitations within this manual and the VdS calculation associated with each independent
150
pipework and nozzle configuration.

Page

NAFFCOInert®
Installation
4. Make sure that the manifold, the pipework and pipe supports are securely installed. Make sure that all fittings
are tight and securely fastened to prevent extinguishing agent leakage or hazardous movements during dis-
charge.
5. The Pipework must be cleaned, blown free of foreign material and inspected internally to ensure that oil or
particulate matter will not soil the hazard area or reduce the nozzle orifice area and affect agent distribution.
6. The Pipework must be pressure tested in accordance with the requirements of NFPA 2001 or ISO 14520-1.
7. Make sure that the check valves are installed in the proper location as indicated in the installation drawings.
8. Make sure that the nozzles are installed in the correct locations and have the correct part numbers and orifice
sizes as indicated in the installation drawings. The nozzles must be oriented such that optimum extinguishing
agent distribution can be achieved. Check the nozzle orifices for any obstructions.
9. The nozzles, piping, manifold mounting support and bolts for manifolds must be installed such that they will not
cause injury to personnel. The extinguishing agent must not be discharged at head height or below where
people in a normal work area could be injured by the discharge. The extinguishing agent must not be
discharged directly on any loose objects or shelves, cabinet tops or similar surfaces where loose objects could
be propelled by the discharge.
10. Manual/Pneumatic release devices must be clearly identified and properly installed where they are easily
accessible. Manual/pneumatic release devices that actuate the NAFFCOInert® System must be properly
identified as to their purpose. Particular care should be taken where manual/pneumatic release devices for
more than one system are in close proximity and could be confused and the wrong system actuated. In this
case, manual/pneumatic release devices must be clearly identified as to which hazard area they affect.
11. If a reserve quantity is required, make sure that it is according to NFPA 2001 (refer to chapter 4.2.4.2).
5.10 Necessary documents
After the installation is finished, the installer must submit all technical documents giving sufficient information to
estimate the hazards and the effectiveness of the inert gas extinguishing system as follows:
 Name of the Owner
 Location of the Risk
 Drawings of the protected enclosures (minimum scale 1:100)
 Protected Risk
 Type, arrangement, surface coverage, performance characteristics and possibly direction of the nozzles
 Pressure drop data for Valves and Fittings
 Calculation of the required inert gas storage quantity
 Hydraulic calculations including appropriate isometric drawings and length of pipes and pipe diameter
(internal diameter; alternatively nominal width and wall thickness; as the case may be, the wall thickness
may also be part of the system approval; for individual projects these specifications will then be required
only in the event of a deviation)
 Location and size of the storage room including filling pressure, ambient temperature
 Inspection and Maintenance instructions, and
 Possible endangerment of the neighborhood or danger from the Neighborhood
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NAFFCOInert®
Part 2 : NAFFCOInert System - Installation, Operation and Maintenance Manual
Operation
6. OPERATION
The NAFFCOInert® System is a fire suppression system based on a constant flow technology that uses inert gas
IG01, IG100, IG55 and IG541 as extinguishing agent. The NAFFCOInert® System operates safe at temperatures from
- 20 °C to + 65°C (-4°F to + 149°F) according to ISO 14520 -1/EN12094 and NFPA 2001. Inert gas fire suppression
systems are based in the principle of reducing the oxygen concentration inside the protected area.
The required quantity of inert gas is held in high-pressure (200 or 300 bar) cylinders by discharge valves with
constant flow and pressure discharge regulators. In case of fire, the discharge valves are actuated by release
devices.
An Electromagnetic Release Device is mounted on top of the master discharge valve and is operated by an electrical
signal from a fire detection system in the protected enclosure. Additionally a Manual/Pneumatic release device is
mounted on top of the electromagnetic release device, in order to provide additionally a manual actuation.
As soon as a fire is detected by the fire detection system a signal is sent to the electromagnetic release device of the
master discharge valve. The electromagnetic release device then actuates the master discharge valve. Alternatively
the system can be manually actuated. Slave discharge valves are connected to the master discharge valve by pilot
hoses. When the master discharge valve opens, pressure is built up in the pilot line and is passed on to the
pneumatic release devices on the slave discharge valves. Each pneumatic release device then automatically opens
the slave discharge valves.
The inert gas is released almost simultaneously from all cylinder discharge valve assemblies across the constant
flow and pressure discharge regulators into the discharge hoses and then into the manifold. The gas from all the
cylinders is collected in the manifold and then discharged across the pipework to the nozzles. The nozzles distribute
the inert gas into the hazard area.
As soon as the hazard area is flooded with inert gas, the oxygen concentration in the air decreases quickly and
uniformly until it reaches a level where combustion is no longer supported. The fire suffocates as a result.
6.1 Operating procedure
A fire extinguishing system which is based on inert gases for enclosures presents a risk of suffocation. To prevent
suffocation, additional life safety systems (i.e. fire detection system, alarms) must be installed.
NOTE:
Additional life safety systems are not part of the NAFFCOInert® System. They must be provided
by external companies.
Automatic Actuation:
For an automatic actuation the NAFFCOInert® System must be connected to a fire detection system. In case of fire
the fire detection systems sends a signal to the NAFFCOInert® System and actuates the system automatically.
Manual Operation:
1. Proceed to the appropriate NAFFCOInert® System master valve/cylinder for the hazard in the gas storage room.
2. Remove the safety pin from the manual release device.
3. Press the hand lever of the manual release device down.
DANGER!
When the NAFFCOInert® System is actuated, everyone must evacuate the hazard area
immediately. Make sure no one enters the hazard area. Call the fire department immediately.
152
DANGER!
Do not intentionally remain in the area during a discharge because the release of gas will
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create considerable turbulence in the enclosure and may be dangerous to life.

NAFFCOInert®
Operation
6.2 Personnel Safety

The extinguishing agent concentration and the reduced oxygen concentration may be dangerous to life. Personnel
must be trained in how to behave in case of fire and how to evacuate the hazard area.
Oxygen concentration Restriction conditions (NFPA 2001) Restriction conditions (EPA)
It may take no longer than 5 minutes to It may take no longer than 1 minute to
12% or more
egress the area. egress the area.
It may take no longer than 3 minutes to It may take no longer than 1 minute to
10% - 12%
egress the area. egress the area.
Normally unoccupied area and it shall Normally unoccupied area and it shall
Below 10%
be within 30s to egress the area be within 30s to egress the area
Table 6-1 Restriction conditions specified in NFPA 2001 and recommended by EPA
NOTE:
The operator is responsible for the appropriate safety precautions and any measures to be
taken for the protection of life.
NOTE:
We recommend to inform the local fire department that an inert gas extinguishing system has
been installed.
6.3 NAFFCOInert® System 1 Zone
Figure 6-1 Typical view of NAFFCOInert System for the protection of one hazard area
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NAFFCOInert®
Operation
Figure 6-1 shows a typical NAFFCOInert® System installed for the protection of one hazard area. The hazard area is
a server room with a subfloor. According to NFPA 2001 the NAFFCOInert® cylinders are stored close to the
protected area. The server room is protected by four nozzles - two nozzles for the server room and two nozzles for
the subfloor.
6.4 NAFFCOInert® System Multi-Sector Distribution
A selector valve is used when multiple hazards are protected by the same set of cylinders. The selector valve directs
the extinguishing agent to the appropriate flooding zone. It reduces the total amount of extinguishing agent and the
number of cylinders required. When multiple-zone are protected by the same set of cylinders, each hazard requires
a selector valve.
Selector valves are available in 1”; 1½” ; 2” ; 2½” and 3” sizes. All sizes are supplied with BSPT threaded ends.
Each selector valve is equipped with a limit switch that provides a visual/electric indication of the status of the valve
(open or closed). The selector valve can be pneumatically operated by a pneumatic control panel.
The minimum actuation pressure of the selector valve is 8 bar.
After installation, the selector valve must be in the closed position. The handle must always be fixed on the
pneumatic actuator in its specific location.
Figure 6-2 Typical view of a NAFFCOInert System for the protection of two hazard areas
Figure 6-2 shows a typical NAFFCOInert® System installed for the protection of two hazard areas. The hazard areas
154
are server rooms with subfloors and a difference in elevation. According to NFPA 2001 the NAFFCOInert® cylinders
are stored close to the protected area. Each server room is protected by four nozzles - two nozzles for the server
room and two nozzles for the subfloor.
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NAFFCOInert®
Operation
6.4.1 Limitations
Selector Valve:
 Minimum number of selector valves: 2
 Maximum number of selector valves: unlimited (see local regulation rules)
NOTE:
For the determination of the manifold size, start with the largest system (system with the
highest estimate flow rate).
NOTE:
After calculating the largest area, complete additional system calculations for the remaining
systems. Use the manifold pipe size calculated for largest area.
NOTE:
A selector valve can be used for multi-zones when all areas are considered as separate fire
hazards.
NOTE:
Each pipe network must be calculated individually to determine the size of pipes and nozzles,
to verify discharge time and to calculate nozzle orifice sizes.
NOTE:
At the end of the installation, make sure that the manual over-rides of all 3/2 way solenoid
valves are in the closed position. All connections from the manifold to the inlet port of the
selector valve must be tested for tightness at both ends.
NOTE:
Special considerations shall be made when using a selector valve controlled system to
protect adjacent hazards that may simultaneously become involved in a fire.
6.4.2 Equivalent Length Values
The following tables list the Equivalent Length values that have been established for the system components that
can be added to a NAFFCOInert® piping network.
Selector Valves Pipe Size Resistance flow calculation for
Equivalent length values (mm)
BSPT (mm) VDS software
1” (25mm) 113 1
1½” (40mm) 130 1
2” (50mm) 140 1
2½” (65mm) 220 1
3” (80mm) 226 1
Table 6-2 Equivalent Length Values
6.4.3 Detailed Layout of a Cylinder Bank Assembly

The system illustrated in figure 6-3 shows of a bank of 8 cylinders that will provide protect two separate hazards.
(with 3 separate zones for extension in the future). The piping and instrumentation diagram (figure 6-4) shows the
connections of the NAFFCOInert® multi-zone system UL.
155 Page

NAFFCOInert®
Operation
6.4.3.1. Actuation Scenarios for Multi - Zone System with Pilot Cylinder
Fire in zone A (5 cylinders): activation of the electromagnetic release device on the NAFFCOInert® master cylinder
(number 5 in figure 6-3.1) and simultaneously of PC 1 Piolot Cylinder.
Fire in zone B (3 cylinders): activation of the electromagnetic release device on the NAFFCOInert® master cylinder
Fire in zone C (2 cylinders): activation of the electromagnetic release device on the NAFFCOInert® master cylinder
The minimum hold time corresponds to the discharge time of the system in which it is used.
PC 3 PC 2 PC 1
Cyl 5 Cyl 4 Cyl 3 Cyl 2 Cyl 1
Figure 6-3. Multiple Zone System with Pilot C ylinder

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NAFFCOInert®
Operation
(Note) 6.4.3.1 is applicable only for UL Listed System
6.4.3.2. Actuation Scenarios for Multi - Zone system with Pneumatic Control Panel
Fire in zone 1 (8 cylinders): activation of the electromagnetic release device on the NAFFCOInert® master cylinder
(number 8 in figure 6-3) and simultaneously of 3/2 way solenoid valves SV1. The minimum hold time corresponds to
the discharge time of the system in which it is used.
Fire in zone 2 (4 cylinders): activation of the electromagnetic release device on the NAFFCOInert® master cylinder
(number 4 in figure 6-3) and simultaneously of 3/2 way solenoid valves SV2. The minimum hold time corresponds to
the discharge time of the system in which it is used.
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NAFFCOInert®
Operation
Figure 6-4 . Multiple - Zone System with pneumatic C ontrol Panel
1 Discharge Valve 13 Pressure and Flow Detector Switch

Constant Flow and Pressure Discharge 14 Nozzle
2 Regulator 15 Pressure Gauge
3 Pneumatic Release Device Pneumatic Control Panel for Multi-Zone
Manual/Pneumatic Release Device 16
4 Systems
5 Electromagnetic Release Device 16a Pressure Reducing Valve
6 Bleed Valve 3/2 Way Solenoid Valve with Manual Over-
7 Pilot Hose and Adapter for Pilot Hoses 16b
Ride G1/8”
8 Discharge Hose 16c Electrical Control Box
9 Manifold Check Valve
10 Pressure Relief Device for Manifold 16d Nipple M12x1.5 (M) - 1/4”-NPT(M)
11 Cylinder 17 Selector Valve Pneumatic Actuator
12 Outer Support 18 Label
6.4.4 Reserve System
The authority having jurisdiction will determine whether a hazard requires a reserve set of inert gas cylinders, either
connected or spares.
NFPA 2001 : “Where required, the reserve quantity shall be as many multiples of the primary supply as the authority
158
having jurisdiction considers necessary. Where uninterrupted protection is required, both primary and reserve supply
shall be permanently connected to the distribution piping and arranged for easy changeover”
Page
A reserve of NAFFCOInert® cylinders is recommended for multiple hazards when they are protected by the same
set of cylinders.

NAFFCOInert®
Part 2 : NAFFCOInert® System - Installation, operation and maintenance manual
Inspection and Maintenance
7. INSPECTION AND MAINTENANCE

Inspection and maintenance of the NAFFCOInert® System must be in accordance with, but not necessarily limited
to, the recommendations of National Fire Fighting Manufacturing FZCO, plus the applicable requirements set forth in
the latest editions of the following standards:
“minimum” inspection and maintenance standards. Also compliance with the Authority Having Jurisdiction must be
required and good engineering practices must be implemented.
Regular inspections and maintenance must be performed to ensure that the system will function properly. Frequency
and type of Inspection and maintenance depend on the nature of the installation, legal and official regulations,
environmental conditions, etc.
Inspections and maintenance must be performed by qualified personnel specially designated for this work,
thoroughly instructed in their duties, with a comprehensive knowledge of the installation.
7.1 Restrictions and Precautions
The following inspection and maintenance procedures and intervals represent the minimum requirements for the
NAFFCOInert® System. These procedures do not preclude those required applicable standards and/or the Authority
Having Jurisdiction. More frequent service intervals may be necessary if systems are installed in more severe
environmental conditions.
7.2 Inspection and Maintenance Program
A regular inspection and maintenance program must be established for the continuous operation of the
NAFFCOInert® System. A periodic inspection and maintenance program must be established and obeyed.
An inspection and maintenance log book must be maintained for ready reference. This log book must include the
following data and can be completed with additional information by the inspector.
 Inspection and maintenance date
 Inspection and maintenance interval
 Name of Inspector
 Inspection and maintenance procedures performed
 Results of any Inspection
 Maintenance performed as a result of the inspection
 Any other event affecting the installation, e.g. fires, unintentional discharge, deactivation, malfunctioning, etc.
7.3 Inspection Intervals
The installer must provide the user with an inspection program for the system and components. The program must
include instructions on the action to be taken in respect of faults.
The inspection program is intended to detect faults at an early stage to allow rectification before the system may
have to operate. A suitable programme is as follows.
DANGER!
Inspections must be performed by qualified personnel only!
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NAFFCOInert®
Interval Inspection and maintenance Refer to chapter

Pressure gauge and cylinder 7.3.1.1
Discharge valve 7.3.1.2
Release devices 7.3.1.3
Components 7.3.1.4
Pipework, pipe supports and manifolds 7.3.1.5
Nozzles 7.3.1.6
Pilot and discharge hoses 7.3.1.7
At least semi-annually
Cylinder assembly 7.3.1.8
Cylinder wall mounting support and rack for cylinder 7.3.1.9
Manifold mounting support and rack for manifold 7.3.1.10
Storage room 7.3.1.11
Pressure and flow detector switch 7.3.1.12
Protected enclosure 7.3.1.13
Electromagnetic release device 7.3.1.14
Pressure gauge (calibrated test gauge) 7.3.2.1
At least annually
Electromagnetic release device 7.3.2.2
Cylinder 7.4.1.1
5 year maintenance
Pilot and discharge hoses test 7.4.1.2
Valve replacement 7.4.2.1
10 year maintenance
Pilot and discharge hose replacement 7.4.2.2
Table 7-1 Inspection and maintenance intervals
CAUTION!
If any changes are made to the NAFFCOInert® System or its components which could have an
adverse influence on the effectiveness of the NAFFCOInert® System (characteristics of fire risk,
enclosure, ventilation etc.), the insurer (if applicable) must be informed and the NAFFCOInert®
System must be modified as appropriate. Any change or extension of the NAFFCOInert® System
must be performed by qualified personnel approved for the NAFFCOInert® System.
NOTE:
After a discharge of the NAFFCOInert® System the system must be controlled and
commissioned by the approved and qualified personnel.
7.3.1. At least Semi-Annual Inspection

7.3.1.1. Pressure Gauge and Cylinder
Check if the pressure gauges on the cylinders indicate approximately 200 bar or 300 bar at 15°C (59°F) ambient
temperature, depending on your NAFFCOInert® System. The pressure varies with lower or higher temperatures.
If a pressure gauge of a NAFFCOInert® cylinder shows a loss in pressure (adjusted for temperature) of more than 5
percent, the cylinder must be refilled or replaced.
160
DANGER!
If the needle of the pressure gauge is in the red sector, immediately refill or replace the
Page
cylinder and report this to National Fire Fighting Manufacturing FZCO.

NAFFCOInert®
CAUTION!
200 bar cylinder: if the indicated pressure is below 180 bar, the cylinder must be refilled or
replaced. 300 bar cylinder: if the indicated pressure is below 270 bar, the cylinder must be
refilled or replaced.
NOTE:
Refer also to chapter 4.3 and chapter 4.3.1. Refer also to the “Material safety data sheets” of
the different extinguishing agents in the appendix of this manual.
7.3.1.2. Discharge Valve

Check the operating position of the discharge valves (visual inspection). Check the burst disc for damage. If the
burst disc is damaged, consult National Fire Fighting Manufacturing FZCO for replacement.
Test the performance of the discharge valve. A performance test of the discharge valve can be executed with filled
cylinders. During the performance test, the correct opening and closing of the discharge valve are checked.
pneumatic constant flow and
discharge hose pilot hose
release pressure discharge
manual/pneumatic
device regulator
release device
electromagnetic
release device
port for pilot hose
master discharge
slave discharge valve slave discharge valve slave discharge valve
valve
Figure 7-1 Discharge Valve performance test
Performance Test Steps:

1. If your NAFFCOInert® System is connected to detection and/or control equipment (i.e. alarm devices, smoke
detectors), disconnect the NAFFCOInert® System from the connected detection and/or control equipment.
2. Disconnect the electrical power supply from the electromagnetic release device on the master discharge valve.
3. Disconnect all pilot hoses and all adapters.
4. Seal the port for pilot hose on the master discharge valve with the corresponding safety nut.
5. Remove all release devices from the discharge valves (manual/pneumatic and electromagnetic release device
from the master discharge valve and the pneumatic release devices from the slave discharge valves).
6. Remove all discharge hoses from the constant flow and pressure discharge regulators.
7. Remove all constant flow and pressure discharge regulators with the gasket from the discharge ports of the
discharge valves.
8. Seal the discharge port of each discharge valve securely with the outlet safety plug. Tighten the outlet safety
plug with a torque of 35 Nm maximum.
9. In order to test the performance of a discharge valve, the discharge valve must be activated. Therefore, screw
the manual/pneumatic release device in the inactivated position to the discharge valve.
161
10. In order to actuate the discharge valve, remove the safety pin from the manual/pneumatic release device and
pull the hand lever. The discharge valve is now actuated. The pressure in the discharge valve chamber drops
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NAFFCOInert®
and simultaneously the pressure in the cylinder lifts up a piston inside the discharge valve and opens the
discharge valve. Pressure builds up in the discharge port of the discharge valve.
11. Push the hand lever of the Manual/Pneumatic release device back to the inactivated position and secure the
pneumatic/manual release device with the safety pin.
12. Unscrew the manual/pneumatic release device.
13. Carefully unscrew the outlet safety plug by a half turn for degassing the pressure in the discharge port. If you
can clearly hear gas escaping for a short time, the opening and the closing of the discharge valve function
properly.
CAUTION!
The degassing must stop immediately, when the valve closes. If the valve does not close, the
outlet safety plug must not be detached.
CAUTION!
If the discharge valve is not closing, this indicates a malfunction and the discharge valve
needs to be replaced immediately. In order to replace the discharge valve, empty the cylinder
by discharging the extinguishing agent through the discharge port by opening the outlet
safety plug a half turn, so that the inert gas can escape slowly. Make sure, that the cylinder is
securely fastened before discharging.
14. Steps 8 - 13 must be performed for each discharge valve of your NAFFCOInert® System.
System re-assembly after the Performance Test:
After the performance test, the NAFFCOInert® System must be re-assembled. Refer also to chapter 5.8, steps 4 -15.
1. Remove the outlet safety plug from the discharge port.
2. Mount the constant flow and pressure discharge regulator to the discharge port of the discharge valve. Put a
new gasket between each discharge valve and constant flow and pressure discharge regulator when assem-
bling. Tighten the constant flow and pressure discharge regulator with a torque of 50 +0/-5 Nm.
3. Connect the discharge hose to the constant flow and pressure discharge regulator. Tighten the swivel nuts of
the discharge hose with a torque of 30 - 40 Nm.
4. Mount a pneumatic release device on all slave cylinders and tighten the pneumatic release devices with a
torque of 50 Nm +0/-15 Nm.
5. Check the electromagnetic release device. If the red marking on the actuating pin is visible, reset the elec-
tromagnetic release device before mounting. Refer to chapter 5.8 step 9.
6. Mount the electromagnetic release device on top of the master discharge valve and tighten it with a torque of 50
Nm 0/-15 Nm.
7. Mount a manual/pneumatic release device on top of the electromagnetic release device and tighten it with a
torque of 50 Nm +0/-15Nm.
8. Connect the adapters to all connections of the pneumatic release devices on the slave discharge valves.
9. Connect the pilot hoses between the adapters at the M12 x 1.5 thread and tighten the pilot hoses with a torque
of 8 - 10 Nm.
10. 10. Mount an adapter with the G1/8” thread to the port for pilot hose on the master discharge valve and tighten it
with a torque of 8 - 10 Nm.
162
11. Connect a pilot hose between the adapter at the port for pilot hose on the master discharge valve and the
adapter at the pneumatic release device on the first slave discharge valve. Tighten the pilot hoses with a torque
of 8 - 10 Nm.
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NAFFCOInert®
7.3.1.3. Release Devices

 Manual/Pneumatic Release Device: check that the manual/pneumatic release device is not obstructed,
especially the hand lever (visual inspection). The manual/pneumatic release device must always be freely
accessible and secured by a safety pin.
 Electromagnetic Release Device:Check the electrical connections for wear and damage.
 Pneumatic Release Device:check the pneumatic release devices on all slave cylinders for physical damage,
deterioration or corrosion (visual inspection). If any deterioration or corrosion is evident replace the pneumatic
release device.
 Releasing Circuit Disable switch:Inspect the device is intact before starting any repair or maintenance and replace.
7.3.1.4. Components
Check all NAFFCOInert® System components for physical damage, deterioration or corrosion (visual inspection). If
any deterioration or corrosion is evident replace the damaged parts.
7.3.1.5. Pipework, Pipe Supports and Manifolds
Check the pipework, pipe supports and manifolds for physical damage, deterioration or corrosion (visual inspection).
If any deterioration or corrosion is evident replace the damaged parts. Tighten loose parts. Clean the pipework, if
necessary with water and a suitable detergent.
CAUTION!
Do not use corrosive cleaning solutions, high alkaline cleaners or chlorine for cleaning,
because they could cause corrosion.
7.3.1.6. Nozzles
Check the nozzles for physical damage, deterioration or corrosion (visual inspection). If any physical damage,
deterioration or corrosion is evident replace the nozzle. Nozzles must be replaced by nozzles with the same part
number.
CAUTION!
Do not interchange nozzles, since interchanging can adversely affect the proper extinguishing
agent distribution and concentration within the protected enclosure!
Make sure that the nozzles are not obstructed. If there are any obstructions, remove these obstructions. Remove dirt
and dust from the nozzle.
CAUTION!
7.3.1.7. Pilot and Discharge Hoses

 Pilot hoses: Check the pilot hoses for damage, abrasion, cuts, kinks (visual inspection). If visual examination
shows any deficiency, the hoses must be replaced immediately. Make sure, that the pilot hoses are securely
fastened.
 Discharge hoses: Check the discharge hoses for damage, abrasion, cuts, kinks (visual inspection). If visual
examination shows any deficiency, the hoses must be immediately replaced. Make sure, that the discharge
163
hoses are securely fastened.

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NAFFCOInert®
7.3.1.8. Cylinder Assembly

Check the cylinder assembly (cylinder, discharge valve, constant flow and pressure discharge regulator, pressure
gauge and release device) for leakage, physical damage, deterioration, corrosion. If any deterioration, leakage or
corrosion is evident replace the damaged parts.
7.3.1.9. Cylinder Wall Mounting Support and Rack for Cylinder
Check all cylinder wall mounting support and rack for cylinder for physical damage, deterioration, corrosion and
tightness (visual inspection). If any deterioration or corrosion is evident replace the damaged parts. Tighten loose
parts.
7.3.1.10. Manifold Mounting Support and Rack for Manifold
Check all manifold mounting support and rack for manifold for physical damage, deterioration, corrosion and
tightness (visual inspection). If any deterioration or corrosion is evident replace the damaged parts. Tighten loose
parts.
7.3.1.11. Storage Room
Make sure that the access to the storage room is unobstructed.
Verify that the temperature in the storage room does not exceed the operating temperature range for cylinders,
discharge valves and other components from -20°C to +65°C ( -4°F to +149°F).
7.3.1.12. Pressure and Flow Detector Switch
Check the pressure and flow detector switch for physical damage, deterioration or corrosion (visual inspection). If
any physical damage, deterioration or corrosion is evident replace the pressure and flow detector switch.
Remove dirt and dust from the pressure and flow detector switch.
CAUTION!
Make sure that the pressure and flow detector switch is activated. If the pressure and flow detector switch is not
activated, perform the following steps to activate the pressure and flow detector switch manually:
1. Activate the pressure and flow detector switch manually by pushing the manual actuation button. Refer to page
162 of the appendix
2. Make sure that the pressure and flow detector switch initiates a signal on the control panel.
3. Reset the pressure and flow detector switch manually by pushing the reset actuation button. Refer to page 162
of the appendix.
7.3.1.13. Protected Enclosure
Check the protected enclosure to determine whether boundary penetration or other changes have occurred that
could affect leakage and the distribution of extinguishing agent. If this cannot be visually determined, repeat the
integrity test of the enclosure according to chapter 4.1.3.
DANGER!
If the integrity test reveals increased leakage that would result in an inability to retain the
extinguishing agent for the required period, the NAFFCOInert® System must be re-designed
164
with the VdS calculation software to ensure that the required extinguishing agent
concentration can be achieved and maintained.
Page
Check the protected enclosure for changes in the volume of the enclosure and changes in the type of hazard.

NAFFCOInert®
DANGER!
If there are changes in the volume of the enclosure and/or changes in the type of hazard, the
NAFFCOInert® System must be re-designed with the VdS calculation software to ensure that
the required extinguishing agent concentration can be achieved and maintained.
7.3.1.14. Electromagnetic Release Device
Make sure that the electromagnetic release device complies with the system drawings and that the power supply is
sufficient to activate the electromagnetic release device and other electrical operated accessories, i.e. alarm devices,
forced-air ventilation control devices.
CAUTION!
In order to avoid an accidental discharge of the system, unscrew the electromagnetic release
device from the master valve for maintenance.
NOTE:
Cables must be secured to cable trays (solid construction element) with cable strips or other
suitable means according normal practice.
7.3.2. At least Annual Inspections

7.3.2.1. Pressure Gauge (Calibrated Test Gauge)
The pressure gauge of the cylinder must be compared to a separate calibrated test gauge. The test gauge shall
have an accuracy grade of 2A (0.5 percent of full scale).
7.3.2.2. Electromagnetic Release Device
Each electromagnetic release device must be disassembled annually from each master discharge valve.
After disassembling activate the electromagnetic release device. When the electromagnetic release device is
activated you can see the red marking of the electromagnetic release device pin (refer to figure 7-2).
Reset the electromagnetic release device pin with the reset tool for electromagnetic release device by screwing it
into the bottom of the electromagnetic released device. Refer to chapter 3.3.3.2.
Correct position of the electromagnetic Incorrect position of the electromagnetic release

release device pin for installation on the top of device pin for installation on the top of the master
the master discharge valve. discharge valve.
Figure 7-2 Correct and incorrect position of the electromagnetic release device pin for installation
After the reset of the electromagnetic release device pin, reassemble the electromagnetic release device on top of
the master discharge valve.
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NAFFCOInert®
7.4 Maintenance
Maintenance work shall be conducted in such a manner as to keep the shut-down period to a minimum, both in time
and extent. In multi-area NAFFCOInert® System installations, the protected areas can be shut down sequentially so
as to disable only a small part of the NAFFCOInert® System installation at any one time.
7.4.1. 5 year or 10 year Maintenance (Depending on Local Regulations)
7.4.1.1. Cylinder
According to DOT, CTC or similar inert gas cylinders must not shall be recharged without retesting if more than 5
years have elapsed since the date of the first installation or of the last test and inspection.
Cylinders continuously in service without discharging must be given a complete external visual inspection every 5
years or more frequently if required. The visual inspection shall be in accordance with Section 3 of CGA C-6,
Standard for Visual Inspection of Steel Compressed Gas Cylinders, except that the cylinders need not be emptied or
stamped while under pressure. All inspections have to be performed by inspectors approved by CGA / DOT or any
equivalent organization.
Inspections must be made only by qualified personnel and the results must recorded on both of the following:
 A record tag permanently attached to each cylinder
 A suitable inspection report. A completed copy of the inspection report must be furnished to the owner of the
system or an authorized representative. These records must be retained by the owner for the life of the
NAFFCOInert® System.
If the external visual inspection indicates that a cylinder has been damaged, additional strength tests must be
performed, or otherwise the cylinder must be replaced.
DANGER!
Cylinders are pressurized vessels containing inert gas. The pressure causes considerable
thrust when a release device is actuated. Therefore the protection cap supplied with the
cylinder must be installed when handling or storing the cylinder, or whenever it is not
securely fastened. The protection cap prevents objects from striking the discharge valve
and/or release device, and reduces and redirects the thrust if the cylinder is accidentally
discharged.
DANGER!
The cylinder must not be exposed to temperatures exceeding 54.4°C (130°F).
NOTE:
The transportation of charged cylinders that have not been tested within 5 years could be
illegal. Federal and local regulations should be consulted before transporting. Refer to
National Fire Protection pamphlet 2001, Section 4-2.1. 8.1 or any equivalent standard.
7.4.1.2. Pilot and Discharge Hose
Pilot and discharge hoses are wear parts and their deterioration will mainly depend on environmental conditions. A
specific replacement program must be set up in accordance with the harshness of the conditions of use.
NOTE:
We strictly recommend to replace all pilot and discharge hoses every ten years.
166
NFPA 2001 allows the use of pilot and discharge hoses for a period exceeding five years, if the pilot and discharge
hoses are tested every five years at 1½ times the maximum cylinder pressure at 54.4°C (130°F).
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NAFFCOInert®
Hydrostatic test procedure according to NFPA 2001:
1. Remove the pilot and discharge hoses from any attachment.
2. Fill each pilot and discharge hose with water and place them in a protective enclosure designed to permit visual
observation of the test.
3. Apply pressure at a rate-of-pressure rise to reach the test pressure within a minimum of 1 minute. Maintain the
test pressure for 60 seconds.
4. Note any distortion or leakage. If the test pressure has not dropped or if the swivel nuts have not moved, release
the pressure. The hose is then considered to have passed the hydrostatic test if no permanent distortion has
taken place.
5. Each pilot or discharge hose that has passed the test must be marked to show the date of test.
6. Each pilot or discharge hose that has passed the test must be completely dried internally before re-installation.
7.4.2. 10 Year Maintenance
7.4.2.1. Discharge Valve Replacement
Discharge Valves must be replaced every 10 years.
7.4.2.2. Pilot and Discharge Hose Replacement
All pilot and discharge hoses must be replaced every 10 years from the date of production. The date of production is
indicated on the hoses.
7.5 Personnel Training
All qualified personnel who may be expected to inspect, test, maintain or operate the NAFFCOInert® System must
be trained and kept adequately trained in the functions they are expected to perform.
167 Page

NAFFCOInert®
Part 2 : NAFFCOInert® System - Installation, Operation and Maintenance Manual
Post Discharge Maintenance
8. POST DISCHARGE MAINTENANCE

8.1 General
This chapter contains post fire maintenance instructions for the NAFFCOInert® System. The information in this
chapter is only for qualified personnel and for Filling Stations Certified by National Fire Fighting Manufacturing FZCO.
DANGER!
The refilling of the cylinders and re-installation works shall be done as soon as possible
within 24 hours.
CAUTION!
After discharge of the NAFFCOInert® System, the NAFFCOInert® System must be controlled,
commissioned and approved by qualified personnel. The handling of the cylinders and
components must be accomplished in accordance with the instructions contained in this
manual and applicable standards.
CAUTION!
If the NAFFCOInert® System is not functional for more than 24 hours, this must be reported to
the insurer (if applicable) and the Authority Having Jurisdiction. Other fire prevention
measures must be carried out immediately.
8.2 Disassembly
DANGER!
Before disassembling the NAFFCOInert® System shut-down the power supply of the system.
DANGER!
Make sure, that all pressure has been relieved from the NAFFCOInert® System before
disassembling. Pressurized cylinders are extremely hazardous. The discharge valve is
capable of producing high discharge thrusts if not handled properly.
CAUTION!
Handle all dismantled parts carefully in order to avoid damage.
The following steps must be repeated until all cylinders are ready for transportation.
1. Disconnect all wiring from the electromagnetic release device.
2. Unscrew the discharge hoses from the constant flow and pressure discharge regulators.
3. Unscrew the pilot hoses from the release devices (either the manual/pneumatic or the pneumatic release
device) and the port for pilot hose on the master discharge valve.
4. Unscrew the manual/pneumatic release device from the electromagnetic release device of the master discharge
valve.
5. Unscrew the electromagnetic release device of the master discharge valve.
6. Unscrew the pneumatic releases device of the slave discharge valves.
7. Unscrew the pressure gauges from the monitoring port of the discharge valves.
8. Dispose of all gaskets, which were installed between the discharge port of the discharge valve and the constant
flow and pressure discharge regulators.
9. Screw an outlet safety plug on the discharge port of each discharge valve.
168
10. Screw a safety/shipping cap on each cylinder.

Page

NAFFCOInert®
DANGER!
Always fit the protection cap on the cylinder before moving the cylinder. Failure can result in
serious bodily injury, death, or property damage.
DANGER!
Do not grab the protective cap to move or lift the cylinder.
11. Unfasten the bolt for cylinder: remove the screw, the nut and the washer from the middle of the bracket for
cylinder and keep them in a safe place.
12. Take the cylinder out of the bolt for cylinder.
13. Put the cylinder on a cylinder carrier and fix it securely.
14. Move the cylinder to a transportation vehicle and fasten it securely.
DANGER!
Cylinders must be transported properly secured. Cylinders must not be rolled, dragged or
slid, nor allowed to be slid from tailgates of vehicles. Cylinders next to the driver’s cabin must
be parallel with vehicle axles or standing up.
DANGER!
Cylinders must not be dropped or permitted to strike against other surfaces or each other.
8.3 Recharging of an NAFFCOInert® cylinder
Before removing the discharge valve for filling, make sure that all pressure has been relieved from the cylinder.
Relief of Pressure
1. Mount a manual/pneumatic release device on the discharge valve.
2. Remove the safety pin from the manual/pneumatic release device and activate the manual/pneumatic release
device by pulling the hand lever in order to release the inert gas.
3. When all inert gas is released, close the manual/pneumatic release device.
4. Remove the manual/pneumatic release device from the discharge valve.
5. Remove the discharge valve from the cylinder.
Assembly and Filling
1. Screw the discharge valve with W28,8 x 1/14” inlet into the cylinder using a maximum torque of 200 Nm and 3
layers of PTFE tape.
2. Screw the discharge valve with 1”NGT inlet in accordance to CGA V-1 into the cylinder.
3. Remove the screw plug, from the monitoring port of the discharge valve.
4. Remove the outlet safety plug from the discharge port of the discharge valve.
5. Fill the cylinder via the discharge port of the discharge valve.
6. Screw the outlet safety plug on the discharge port of the discharge valve and tighten it with a torque of 35 Nm.
7. Close the monitoring port of the discharge valve with the screw plug.
8. Screw the safety/shipping cap on the cylinder.
* For Refilling the system cylinders must be filled or recharged by factory/authoriz ed filling station
169
CAUTION!
The pressure gauge of the NAFFCOInert® System is not to be used to determine when the
intended charging pressure has been reached. A constant flow and pressure discharge
Page
regulator is to be used when the pressure source is a tank of high pressure gas.

NAFFCOInert®
CAUTION!
Use only clean cylinders without any remnants of PTFE tape, paint particles or other
contamination. Contamination can cause leaks in the discharge valve and can lead to
malfunction of the discharge valve.
CAUTION!
Do not fill cylinders super-cooled. Super-cool filling can cause leakage of the discharge valve.
CAUTION!
For safety reasons, the outlet safety plug and the protection cap must be installed on the
cylinder at all times, except when the cylinder is connected to the pipework or when the
cylinder is filled or refilled.
8.4 Reinstallation of an NAFFCOInert® cylinder
1. Re-install the NAFFCOInert® battery. For the single row installation, refer to chapter 5.7.1. For the double row
installation refer to chapter 5.7.2.
2. For system assembly refer to chapter 5.8.
NOTE:
Use a new gasket between the discharge valve and the constant flow and pressure discharge
regulator when re-assembling.
NOTE:
Reset the electromagnetic release device with the reset tool for electromagnetic release
device before mounting it on top of the discharge valve.
170 Page

NAFFCOInert®
Malfunctioning
9. MALFUNCTIONING
9.1 General
Malfunctioning of the NAFFCOInert® System can only be caused by improper installation or the use of non-genuine
National Fire Fighting Manufacturing FZCO components, which is considered as improper use.
NOTE:
Strictly obey this “Design, Installation, Operation and Maintenance Manual for NAFFCOInert®
Systems” to avoid malfunctioning of the NAFFCOInert® System.
NOTE:
If the NAFFCOInert® System is not designed, installed, operated and maintained correctly,
National Fire Fighting Manufacturing FZCO cannot be held responsible for any possible
breakage, damage and malfunctions.
171 Page

NAFFCOInert®
Recycling and Disposal
10. RECYCLING AND DISPOSAL

All parts of the NAFFCOInert® System and all accessories must be returned to National Fire Fighting Manufacturing
FZCO or to an authorized representative for recycling and disposal.
The packaging of the NAFFCOInert® System must be handed over to a proper disposal organization.
DANGER!
The disposal of the cylinder must only be by qualified specialists.
172 Page

NAFFCOInert®
Limited Warranty
11. LIMITED WARRANTY

National Fire Fighting Manufacturing FZCO warrants to the original purchasers that the products manufactured by it
shall be free form defects in materials and workmanship under normal use for a period of one (1) year from the date
of manufacture. Provided the product is supplied and installed by an authorised National Fire Fighting Manufacturing
FZCO distributor, in accordance with the written instructions contained in the instruction manuals or other data
supplied with products, and when the National Fire Fighting Manufacturing FZCO products have not been altered or
modified and as long as the following conditions are met:
1. The original purchaser must maintain a semi-annual maintenance agreement with an authorised distributor,
commencing with the date the National Fire Fighting Manufacturing FZCO product was accepted by the
purchaser and placed into service. The service agreement must remain in effect for the duration of the
warranty.
2. The National Fire Fighting Manufacturing FZCO. warranty registration card must be completed and returned to:
National Fire Fighting Manufacturing FZCO,
P.O. Box: 17014, Dubai - United Arab Emirates
Email: info@naffco.com, www.naffco.com
If within thirty (30) days after the buyer’s discovery of what buyer believes is a defect, buyer notifies in writing and
ships the product to National Fire Fighting Manufacturing FZCO, P.O. Box: 17014, Dubai - United Arab Emirates.
National Fire Fighting Manufacturing FZCO at its option, and within forty-five (45) days of receipt, will repair, replace
or refund the purchase price of that part or product found by National Fire Fighting Manufacturing FZCO to be
defective. Failure of the buyer to give such written notice and ship the product within thirty (30) days shall be deemed
obsolete and unconditional waiver of any and all claims of buyer arising out of such defect.
This warranty does not extend to any product or parts that is not installed and used continuously after installation in
accordance with National Fire Fighting Manufacturing FZCO instructions, all applicable state and local regulations,
and all applicable national standards. This warranty does not extend to any product or part that has been damaged
by accident, misuse, abuse, failure to maintain, or neglect, nor does it extend to any product or party which has been
modified, altered, dissembled, or repaired in the field.
This warranty does not cover any cosmetic issues, such as scratches, dents, marring, fading of colors or
discoloration. In no event shall National Fire Fighting Manufacturing FZCO be liable for consequential or incidental
damages arising from the purchase and or use of National Fire Fighting MFG FZCO, including but not limited to:
damages resulting from loss of use of National Fire Fighting Manufacturing FZCO products, the costs of replacing
discharge suppression agent, damages for lost profits or income, or damages for resulting harm to property other
than the National Fire Fighting Manufacturing FZCO products.
Furthermore, National Fire Fighting Manufacturing FZCO is not liable for defects in product compliance due to
normal wear of those parts, which by their nature, are subject to continuous wear.
Except as expressly set forth above, and subject to the limitation of liability below, NATIONAL FIRE FIGHTING
MANUFACTURING FZCO MAKES NO OTHER WARRANTY, EXPRESS OR IMPLIED, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, with respect to its products and parts, whether used alone or in combination with others. National Fire
Fighting Manufacturing FZCO disclaims all warranties not stated herein.
11.1 Limitation of liability
173
National Fire Fighting Manufacturing FZCO total liability for any and all losses and damages arising out of any cause
breach of this warranty, shall in no event exceed the purchase price of the products or parts in respect of which such
Page
cause arises, whether such cause be based on theories of contract, negligence, strict liability, tort or otherwise.

NAFFCOInert®
Limited Warranty
National Fire Fighting Manufacturing FZCO shall not be liable for incidental, consequential, lost profit or punitive
damages or other losses. National Fire Fighting Manufacturing FZCO shall not be liable for, and buyer assumes any
liability for, all personal injury and property damage connected with the handling, transportation, possession, further
manufacture, other use or resale of products, whether used alone or in combination with any other products or
materials, except to the extent any such personal injury or property damage caused solely by a breach of this
warranty.
NOTE:
Some States do not allow the exclusion or limitation of incidental, consequential, or punitive
damages, so the above limitation or exclusion may not apply to you. The warranty gives you
specific legal rights, and you may have other rights that vary from state to state. The portions
of this limited warranty and limitation of liability shall be considered severable and all portions
which are not disallowed by applicable law shall remain in full force and effect.
11.2 Non-assignment of W arranty
The limited warranty set forth herein may not be assigned, transferred or sold in any way and extends only to the
original purchaser.
11.3 Use of Non-NAFFCO P roducts
All National Fire Fighting Manufacturing FZCO products are furnished using all National Fire Fighting Manufacturing
FZCO components. All units must exclusively use National Fire Fighting Manufacturing FZCO components,
especially for connection(s) to the tubing. Failure to use National Fire Fighting Manufacturing FZCO components
exclusively voids all warranties and will release National Fire Fighting Manufacturing FZCO of any and all liability on
the performance of the National Fire Fighting Manufacturing FZCO components and unit.
174 Page

NAFFCOInert®
Appendix
IG01 MATERIAL SAFETY DATA SHEET

Section 1: Identification of the Material and Supplier
Product Name IG01
Recommended Use Fire extinguishing agent
Supplier Identification National Fire Fighting MFG FZCO,
P.O. Box: 17014,
Dubai - United Arab Emirates
Tel: +971 4 815 1111, Fax: +971 4 815 1222
Section 2: Hazards Identification

Physical State Gas. [NORMALLY A COLOURLESS GAS: MAY BE A CLEAR COLOURLESS
LIQUID AT LOW TEMPERATURES. SOLD AS A COMPRESSED GAS IN
STEEL CYLINDERS.]
Emergency Overview WARNING!
GAS:
CONTENTS UNDER PRESSURE.
Do not puncture or incinerate container. Can cause rapid suffocation.
May cause severe frostbite.
LIQUID:
Extremely cold liquid and gas under pressure.
Can cause rapid suffocation.
Do not puncture or incinerate container. May cause target organ damage,
based on animal data. Contact with rapidly expanding gases or liquids can
cause frostbite.
Target Organs May cause damage to the following organs: lungs.
Routes of Entry Inhalation
Potential Acute Health Effects Eyes Contact with rapidly expanding gas may cause burns or frostbite.
Contact with cryogenic liquid can cause frostbite and cryogenic
burns.
Skin Contact with rapidly expanding gas may cause burns or frostbite.
burns.
Inhalation Acts as a simple asphyxiant.
Ingestion Ingestion is not a normal route of exposure for gases. Contact
with cryogenic liquid can cause frostbite and cryogenic burns.
Potential Chronic Health Effects Chronic effects May cause target organ damage, based on animal data.
Target organs May cause damage to the following organs: lungs.
Medical Conditions Aggravated Pre-existing disorders involving any target organs mentioned in this MSDS as
by Overexposure being at risk may be aggravated by over-exposure to this product.
See toxicological information (Section 11)
175
Section 3: Composition / Information on Ingredients

Component Name CAS# / Codes Concentration R Phrases EU Classification
Page
Argon 7440-37-1, EC#231-147-0 100% None Non-flammable gas

NAFFCOInert®
Appendix
Section 4: First Aid Measures

No action shall be taken involving any personal risk or without suitable training. If it is suspected that fumes
are still present, the rescuer should wear an appropriate mask or self-contained breathing apparatus. It may
be dangerous to the person providing aid to give mouth-to-mouth resuscitation.
Eye contact Check for and remove any contact lenses. Immediately flush eyes with plenty of
water for at least 15 minutes, occasionally lifting the upper and lower eyelids.
Get medical attention immediately.
Skin contact None expected.
Frostbite Try to warm up the frozen tissues and seek medical attention.
Inhalation Move exposed person to fresh air. If not breathing, if breathing is irregular or if
respiratory arrest occurs, provide artificial respiration or oxygen by trained
personnel.
Loosen tight clothing such as a collar, tie, belt or waistband. Get medical
attention immediately.
Ingestion As this product is a gas, refer to the inhalation section.
Section 5: Fire-Fighting Measures

Flammability of the Product Non-flammable
Products of Combustion Not applicable
Fire-Fighting Media and Use an extinguishing agent suitable for the surrounding fire.
Instructions Apply water from a safe distance to cool container and protect surrounding
area. If involved in fire, shut off flow immediately if it can be done without risk.
Contains gas under pressure. In a fire or if heated, a pressure increase will
occur and the container may burst or explode.
Special Protective Equipment for Fire-fighters should wear appropriate protective equipment and self-contained
Fire-Fighters breathing apparatus (SCBA) with a full face-piece operated in positive pressure
mode.
Section 6: Accidental Release Measures

Personal Precautions Immediately contact emergency personnel. Keep unnecessary personnel away.
Use suitable protective equipment (section 8). Shut off gas supply if this can be
done safely. Isolate area until gas has dispersed.
Environmental Precautions Avoid dispersal of spilled material and runoff and contact with soil, waterways,
drains and sewers.
Methods for Cleaning Up Immediately contact emergency personnel. Stop leak if without risk. Note: see
Section 1 for emergency contact information and Section 13 for waste disposal.
Section 7: Handling and Storage

Handling High pressure gas. Do not puncture or incinerate container. Use equipment
rated for cylinder pressure. Close valve after each use and when empty. Protect
cylinders from physical damage; do not drag, roll, slide, or drop. Use a suitable
hand truck for cylinder movement. Never allow any unprotected part of the body
176
to touch uninsulated pipes or vessels that contain cryogenic liquids. Prevent

entrapment of liquid in closed systems or piping without pressure relief devices.
Some materials may become brittle at low temperatures and will easily fracture.
Page

NAFFCOInert®
Appendix
Storage Cylinders should be stored upright, with valve protection cap in place, and firmly
secured to prevent falling or being knocked over. Cylinder temperatures should
not exceed 52 °C (125°F).
For additional information concerning storage and handling refer to Compressed
Gas Association pamphlets P-1 Safe Handling of Compressed Gases in
Containers and P-12 Safe Handling of Cryogenic Liquids available from the
Compressed Gas Association, Inc.
Section 8: Exposure Controls / Personal Protection

Engineering Controls Use only with adequate ventilation. Use process enclosures, local exhaust
ventilation or other engineering controls to keep worker exposure to airborne
contaminants below any recommended or statutory limits.
Potential Acute Health Effects Eyes Safety eye-wear complying with an approved standard should
be used when a risk assessment indicates this is necessary to
avoid exposure to liquid splashes, mists or dusts.
When working with cryogenic liquids, wear a full face shield.
Skin Personal protective equipment for the body should be selected
based on the task being performed and the risks involved and
should be approved by a specialist before handling this product.
Respiratory Use a properly fitted, air-purifying or air-fed respirator complying
with an approved standard if a risk assessment indicates this is
necessary. Respirator selection must be based on known or
anticipated exposure levels, the hazards of the product and the
safe working limits of the selected respirator.
The applicable standards are (US) 29 CFR 1910.134 and
(Canada) Z94.4-93
Hands Chemical-resistant, impervious gloves complying with an
approved standard should be worn at all times when handling
chemical products if a risk assessment indicates this is
necessary.
Insulated gloves suitable for low temperatures
Personal protection in Self-contained breathing apparatus (SCBA) should
case of a large spill be used to avoid inhalation of the product.
Product Name IG01 Oxygen Depletion [Asphyxiant]
Consult local authorities for acceptable exposure limits.
Section 9: Physical and Chemical Properties

Physical State Compressed gas
Colour Colourless
Odour None
Flash Point (PMCC) (°C/F) Non-flammable
Solubility In Water Negligible
Boiling / Condensation Point -185.87°C (-302.57°F)
3
Specific Volume (ft /lb) 0.622 m3/kg (9.8 ft3/lb)
177
Gas Density (lb/ft3) 1.608 kg/m3 (0.102 lb/ft3)

Page

NAFFCOInert®
Appendix
Section 10: Stability and Reactivity

Stability and Reactivity The product is stable.
Hazardous Decomposition Under normal conditions of storage and use, hazardous decomposition products
Products should not be produced.
Hazardous Polymerization Under normal conditions of storage and use, hazardous polymerization will not
occur.
Section 11: Toxicological Information

Toxicity data
Chronic effects on humans May cause damage to the following organs: lungs.
Other toxic effects on humans No specific information is available in our database regarding the other toxic
effects of this material to humans.
Specific effects
Carcinogenic effects No known significant effects or critical hazards.
Mutagenic effects No known significant effects or critical hazards.
Reproduction toxicity No known significant effects or critical hazards.
Section 12: Ecological Information

Aquatic eco-toxicity Not available.
Environmental fate Not available.
Environmental hazards No known significant effects or critical hazards.
Toxicity to the environment Not available.
Section 13: Disposal Considerations

Products removed from the cylinder must be disposed of in accordance with appropriate Federal, State, local
regulations. Do not dispose of locally. Do not dispose of the product in the domestic waste or at any waste collection
places.
Section 14: Transport Information

Proper
Regulatory UN Packing
Shipping Class Label Additional Information
Information Number Group
Name
Limited quantity
Yes.
Compressed Not Packaging Instruction
DOT
UN1006 gases, n.o.s 2.2 applicable Passenger Aircraft
Classification
(IG01) (gas). Quantity limitation: 75 kg
Cargo Aircraft
Quantity limitation: 150 kg
Explosive Limit and
Limited Quantity Index
Compressed Not 0.125
TDG
UN1006 gases, n.o.s 2.2 applicable
Classification Passenger Carrying
178
(IG01) (gas).
Road or Rail Index
75
Page

NAFFCOInert®
Appendix
-
Compressed Not
IATA UN1006 gases, n.o.s 2.2 applicable
Classification (gas).
(IG01)
-
Compressed Not
Mexico
(IG01)
“Refer to CFR 49 (or Authority Having Jurisdiction) to determine the information required for shipment of the product.”
Section 15: Regulatory Information

Classification and labelling have been performed according to EU directives 67/548/EEC and 99/45/EC
including amendments (2001/60/EC and 2006/8/EC)
EU Hazard Symbol and
Non-flammable gas. Not classified as a dangerous substance.
Indication of Danger
R phrases None
S phrases S9 Keep container in a well-ventilated place.
US REGULATIONS (Federal, State) and INTERNATIONAL CHEMICAL REGISTRATION LAWS
TSCA Listing This product contains ingredients that are listed on or exempt from listing on the
EPA Toxic Substance Control Act Chemical Substance Inventory.
EINECS Listing All ingredients in this product are listed on the European Inventory of Existing
Commercial Chemical Substances (EINECS) or the European List of Notified
Chemical Substances (ELINCS) or are exempt from listing.
DSL/NDSL (Canadian) Listing All ingredients in this product are listed on the Domestic Substance List (DSL) or
the Non-Domestic Substance List (NDSL) or are exempt from listing.
WHMIS Classification This product was classified in accordance with the hazard criteria of the
Canadian Controlled Products Regulations and the MSDS contains all the
information required by these regulations.
California Proposition 65 This product does not contain materials which the State of California has found
to cause cancer, birth defects or other reproductive harm.
SARA Title III Sect. 302 (EHS) This product does not contain any chemicals subject to SARA Title III Section
302.
SARA Title III Sect. 304 This product does not contain any chemicals subject to SARA Title III Section
304.
SARA Title III Sect. 311/312
Immediate (Acute) Health Hazard - Pressure Hazard
Categorization
SARA Title III Sect. 313 This product does not contain a chemical which is listed in Section 313 at or
above the minimum concentrations.
179 Page

NAFFCOInert®
Appendix
Section 16: Other Information

United States Label GAS:
Requirements CONTENTS UNDER PRESSURE.
LIQUID:
Extremely cold liquid and gas under pressure. Can cause rapid suffocation.
Canada Label Requirements Class A: Compressed gas.
Hazardous Material Information Health 0
System (U.S.A.) Flammability 0
Physical hazards 0
System (U.S.A.) Liquid: Fire hazard 0
Reactivity 0
Personal protection
National Fire Protection
Association (U.S.A.)

Association (U.S.A.) Liquid:
Notice to Reader
To the best of our knowledge, the information contained herein is accurate. However, neither the above-named supplier,
hazards
nor any ofand
its sh
subsidiaries, assumes any liability whatsoever for the accuracy or completeness of the information contained
herein.
Final determination of suitability of any material is the sole responsibility of the user. All materials may present unknown
ould be used with caution. Although certain hazards are described herein, we cannot guarantee that these
are the only hazards that exist.
180 Page

NAFFCOInert®
Appendix

Product Name IG100
P.O. Box: 17014,
Tel: +971 4 815 1111, Fax: +971 4 815 1222

STEEL CYLINDERS.]
GAS:
LIQUID:
Do not puncture or incinerate container. May cause target organ damage, based
on animal data. Contact with rapidly expanding gases or liquids can cause
frostbite.
burns.
burns.
Ingestion Ingestion is not a normal route of exposure for gases. Contact with
cryogenic liquid can cause frostbite and cryogenic burns.
181

Page
Nitrogen 7727-37-9, EC#231-783-9 100% None Non-flammable gas

NAFFCOInert®
Appendix

Eye Contact Check for and remove any contact lenses. Immediately flush eyes with plenty of
Skin Contact None expected.
personnel.

Products of Combustion Decomposition products may include the following materials: nitrogen oxides
Instructions Apply water from a safe distance to cool container and protect surrounding area.
If involved in fire, shut off flow immediately if it can be done without risk.
Special Protective Equipment Fire-fighters should wear appropriate protective equipment and self-contained
for Fire-Fighters breathing apparatus (SCBA) with a full face-piece operated in positive pressure
mode.

drains and sewers.

182

Page

NAFFCOInert®
Appendix

Potential Acute Health Effects Eyes Safety eye-wear complying with an approved standard should be
used when a risk assessment indicates this is necessary to avoid
exposure to liquid splashes, mists or dusts.
(Canada) Z94.4-93
necessary.
Product Name Nitrogen Oxygen Depletion [Asphyxiant]

Colour Colourless
Odour None
Flash point (PMCC) (°C/F) Non-flammable
Solubility in Water Negligible
183
3
Specific Volume (ft /lb) 0.8582 m3/kg (13.8889 ft3/lb)
Page

NAFFCOInert®
Appendix

occur.

Toxicity Data
Chronic Effects on Humans May cause damage to the following organs: lungs.
Other Toxic Effects on Humans No specific information is available in our database regarding the other toxic
Specific Effects
Carcinogenic Effects No known significant effects or critical hazards.
Mutagenic Effects No known significant effects or critical hazards.
Reproduction Toxicity No known significant effects or critical hazards.
Section 12: Ecological information

Aquatic Eco-Toxicity Not available.
Environmental Fate Not available.
Environmental Hazards No known significant effects or critical hazards.
Toxicity To The Environment Not available.

places.

Proper
Name
Limited quantity
Yes.
Compressed
Not Packaging instruction
DOT gases, n.o.s.
UN1066 (IG100) 2.2 applicable Passenger aircraft
Classification
(gas). Quantity limitation: 75 kg
Cargo aircraft
Explosive Limit and
Compressed Limited Quantity Index
gases, n.o.s. Not 0.125
TDG
UN1066 (IG100) 2.2 applicable
184
(gas).
Road or Rail Index
75
Page

NAFFCOInert®
Appendix
Compressed -
Mexico gases, n.o.s. Not
IATA UN1066 2.2 applicable
Classification
Classification (IG100) (gas).
Compressed -
Mexico gases, n.o.s. Not
UN1066 (IG100) 2.2 applicable

EU Hazard Symbol and Non-flammable gas. Not classified as a dangerous substance.
R phrases None
MA Right To Know Law All components have been checked for inclusion on the Massachusetts
Substance List (MSL). Those components present at or above the minimum
concentration include: Nitrogen
PA Right To Know Law This product contains the following chemicals found on the Pennsylvania
Hazardous Sub- stance List: Nitrogen
NJ Right To Know Law This product contains the following chemicals found on the NJ Right To Know
Hazardous Substance List: Nitrogen
185 Page

NAFFCOInert®
Appendix
302.
304.
SARA Title III Sect. 311/312 Immediate (Acute) Health Hazard - Pressure Hazard
Categorization
United States label GAS:
requirements CONTENTS UNDER PRESSURE.
Do not puncture or incinerate container.
LIQUID:
Canada label requirements Class A: Compressed gas.
Physical hazards 0
Reactivity 0
Personal protection

Notice to Reader
nor any of its subsidiaries, assumes any liability whatsoever for the accuracy or completeness of the information contained
186
herein.
hazards and should be used with caution. Although certain hazards are described herein, we cannot guarantee that these
Page

NAFFCOInert®
Appendix

Product Name IG55
P.O. Box: 17014,
Tel: +971 4 815 1111, Fax: +971 4 815 1222

STEEL CYLINDERS.]
GAS:
LIQUID:
frostbite.
burns.
burns.
Ingestion Ingestion is not a normal route of exposure for gases. Contact
with cryogenic liquid can cause frostbite and cryogenic burns.
187 Page

NAFFCOInert®
Appendix

Argon 7440-37-1, EC#231-147-0 50% None Non-Flammable Gas
Nitrogen 7727-37-9, EC#231-783-9 50% None Non-Flammable Gas

personnel.

Products of Combustion Decomposition products may include the following materials: nitrogen oxides
Special Protective Equipment Fire-fighters should wear appropriate protective equipment and self-contained
for Fire-Fighters breathing apparatus (SCBA) with a full face-piece operated in positive pressure
mode.

drains and sewers.
188 Page

NAFFCOInert®
Appendix


(Canada) Z94.4-93
Hands Chemical-resistant, impervious gloves complying with an approved
standard should be worn at all times when handling chemical
products if a risk assessment indicates this is necessary.
Personal protection in Self-contained breathing apparatus (SCBA) should be
case of a large spill used to avoid inhalation of the product.

189

Colour Colourless
Page
Odour None

NAFFCOInert®
Appendix

Solubility In Water Negligible
Specific Volume (ft3/lb) 0.70810 m3/kg (11.34267 ft3/lb)

occur.

Toxicity Data
Specific Effects

Toxicity to the Environment Not available.

places.

Proper
Name
Limited quantity
Yes.
Compressed Not Packaging instruction
DOT
UN1956 gases, n.o.s 2.2 applicable Passenger aircraft
Classification
190
Cargo aircraft
Page

NAFFCOInert®
Appendix
Explosive Limit and

TDG
(IG55) (gas).
Road or Rail Index
75
-
Compressed Not
(IG55)
-
Compressed Not
Mexico
(IG55)

R phrases None
WHMIS Classification This product was classified in accordance with the hazard criteria of the Canadian
Controlled Products Regulations and the MSDS contains all the information
required by these regulations.
MA Right To Know Law All components have been checked for inclusion on the Massachusetts
Substance List (MSL). Those components present at or above the minimum
concentration include: Nitrogen - Argon
PA Right To Know Law This product contains the following chemicals found on the Pennsylvania
Hazardous Substance List: Nitrogen - Argon
191 Page

NAFFCOInert®
Appendix
NJ Right To Know Law This product contains the following chemicals found on the NJ Right To Know
Hazardous Substance List: Nitrogen - Argon
California Proposition 65 This product does not contain materials which the State of California has found to
cause cancer, birth defects or other reproductive harm.
SARA Title III Sect. 302 (EHS) This product does not contain any chemicals subject to SARA Title III Section 302.
SARA Title III Sect. 304 This product does not contain any chemicals subject to SARA Title III Section 304.
Categorization
United States label GAS:
requirements CONTENTS UNDER PRESSURE.
LIQUID:
Canada label requirements Class A: Compressed gas.
Physical hazards 0
Reactivity 0
Personal protection

Notice to Reader
herein.
192
Page

NAFFCOInert®
Appendix

Product Name IG541
P.O. Box: 17014,
Tel: +971 4 815 1111, Fax: +971 4 815 1222

STEEL CYLINDERS.]
GAS:
LIQUID:
frostbite.
burns.
burns.
Ingestion Ingestion is not a normal route of exposure for gases. Contact with
cryogenic liquid can cause frostbite and cryogenic burns.
193 Page

NAFFCOInert®
Appendix

Nitrogen 7727-37-9
52% None Non-flammable gas
EC#231-783-9
Argon 7440-37-1
40% None Non-flammable gas
EC#231-147-0
Carbon Dioxide 124-38-9 8% None Non-flammable gas

personnel.

Flammability of The Product Non-flammable
Products of Combustion None
Contains gas under pressure. In a fire or if heated, a pressure increase will occur
and the container may burst or explode.
Special Protective Equipment for Fire-fighters should wear appropriate protective equipment and self-contained
Fire-Fighters breathing apparatus (SCBA) with a full face-piece operated in positive pressure
mode.

drains and sewers.
194
Page

NAFFCOInert®
Appendix

Handling High pressure gas. Do not puncture or incinerate container. Use equipment rated
for cylinder pressure. Close valve after each use and when empty. Protect

(Canada) Z94.4-93
necessary.
195

Colour Colourless
Page

NAFFCOInert®
Appendix
Odour None
Solubility in Water Negligible
Boiling / Condensation Point -196°C (-320.8°F)
Specific Volume (ft3/lb) 0.693 m3/kg (11.1 ft3/lb)

occur.

Toxicity Data
Specific Effects

Toxicity To The Environment Not available.

places.

Proper
Name
Limited quantity
Yes.
Compressed Not Packaging instruction
DOT
UN1956 gases, n.o.s 2.2 applicable Passenger aircraft
196
Classification
Cargo aircraft
Page

NAFFCOInert®
Appendix
Explosive Limit and

TDG
(IG541) (gas).
Road or Rail Index
75
-
Compressed Not
(IG541)
-
Compressed Not
Mexico
(IG541)

R phrases None
302.
304.
Categorization
This product does not contain a chemical which is listed in Section 313 at or
197
SARA Title III Sect. 313

Page

NAFFCOInert®
Appendix

United States Label GAS:
Requirements CONTENTS UNDER PRESSURE.
LIQUID:
Canada Label Requirements Class A: Compressed gas.
Physical hazards 0
Reactivity 0
Personal protection

Notice to Reader
herein.
198 Page

NAFFCOInert®
Appendix
Tapered Thread Port Assembly

(according to “Parker Hannifin Corporation 4300 Catalog”)
Tapered Thread Ports
Tapered thread ports include NPTF, BSPT and metric taper. The tapered threads in these ports serve two functions:
1. to hold the fitting in place while under pressure and
2. to serve as the primary seal.
Tapered thread port
The variety of thread forms available under taper threads include:

 NPT - American Standard Taper Pipe Thread (ANSI B1.20.1).
 NPTF - Dryseal American Standard Taper Pipe Thread (SAE J476, ANSI B1.20.3).
 BSPT or JIS “PT” - British Standard Pipe, Tapered (BS21, JIS B 0203, ISO 7), also known as “R” for male
and “Rc” for female.
 M-Keg – Metric taper threads (DIN 158)
However, variations in condition of mating threads, fitting and port materials, assembly procedures and operating
conditions make self-sealing highly improbable. Some type of thread sealant is, therefore, required to achieve proper
seal and, in some cases, additional lubricity to prevent galling.
Types of Sealant/Lubricant
Sealant/Lubricants assist in sealing and provide lubrication during assembly, reducing the potential for galling. Pipe
thread sealants are available in various forms such as dry pre-applied, tape, paste and anaerobic liquid. Pre-applied
sealants, such as powdered PTFE are usually applied to connectors by the manufacturer. Connectors with some of
these sealants may be remade a few times without needing additional sealant.
PTFE tape, if not applied properly, can contribute to system contamination during assembly and installation. In
addition, because of PTFE’s high lubricity, fittings can be more easily over tightened; and it does not offer much
resistance to loosening due to vibration.
199
Paste sealants can also contribute to system contamination, if not applied properly. They are also messy to work
with; and some types require a cure period after component installation, prior to system start up.
Page

NAFFCOInert®
Appendix
Anaerobic liquids are available from several manufacturers and perform sealing as well as thread locking functions.
They are applied to the connectors by the user and require a cure period prior to system start up. Some are soluble
in common hydraulic fluids and will not contaminate the system. For proper performance they need to be applied to
clean and dry components, carefully following the manufacturer’s directions.
Tapered Thread Port Assembly
The proper method of assembling tapered threaded connectors is to assemble them finger tight and then wrench
tighten further to the specified number of turns from finger tight given in the table below.
The following assembly procedure is recommended to minimize the risk of leakage and/or damage to components.
1. Inspect components to ensure that male and female port threads and sealing surfaces are free of burrs, nicks
and scratches, or any foreign material.
2. Apply sealant/lubricant to male pipe threads if not pre-applied. If PTFE tape is used it should be wrapped 1½ to
2 turns in clockwise direction when viewed from the pipe thread end.
CAUTION!
More than two turns of tape may cause distortion or cracking of the port.
3. Screw the connector into the port to the finger tight position.
4. Wrench tighten the connector to the appropriate turns from finger tight values shown in the table below, making
sure that the tube end of a shaped connector is aligned to receive the incoming tube or hose assembly. Never
back off (loosen) pipe threaded connectors to achieve alignment.
5. If leakage persists after following the above steps, check for damaged threads and total number of threads
engaged.
If threads on the fitting are badly nicked or galled, replace the fitting. If port threads are damaged, re-tap, if possible,
or replace the component. If the port is cracked, replace the component.
Normally, the total number of tapered threads engaged should be between 3½ and 6. Any number outside of this
range may indicate either under or over tightening of the joint or out of tolerance threads. If the joint is under
tightened, tighten it further but no more than one full turn. If it is over tightened, check both threads, and replace the
part which has out-of-tolerance threads.
As a general rule, pipe fittings with tapered threads should not be assembled to a specific torque because the torque
required for a reliable joint varies with thread quality, port and fitting materials, sealant used, and other factors.
Where many of these factors are well-controlled, such as particular jobs on an assembly floor, a torque range that
produces the desired results may be determined by test and used in lieu of turns count for proper joint assembly.
Tapered Pipe Thread Size
Turns from Finger Tight
BSPT NPTF
1/8-28 1/8-27 2-3
1/4-19 1/4-18 2-3
3/8-19 3/8-18 2-3
1/2-14 1/2-14 2-3
3/4-14 3/4-14 2-3
1-11 1-11 1/2 1.5 - 2.5
1 1/4-11 1 1/4-11 1/2 1.5 - 2.5
200
1 1/2-11 1 1/2-11 1/2 1.5 - 2.5

2-11 2-11 1/2 1.5 - 2.5
Page
Assembly turns from finger tight values for steel, stainless steel and brass pipe fittings

NAFFCOInert®
Appendix
Technical Data Pressure and Flow Detector Switch
201 Page

NAFFCOInert®
Commissioning Test for
Page 1 of 4
GENERAL CUSTOMER INFORMATION
Company: Test Performed By:

Address:
Name Signature
Telephone:
Protection Hazard: Name Signature
Date of test:
Name Signature
Location of
NAFFCOInert® System:
Comments:
THE FOLLOWING TESTS HAVE TO BE PERFORMED IN STEP BY STEP AS LISTED BELOW!
ENCLOSURE Result of test Comments

Check if the net volume of the protected enclosure corresponds with the project
specification. □ Passed □ Failed
Check if the class of fire corresponds with the project specification. □ Passed □ Failed
Make sure that the enclosure is cleaned. □ Passed □ Failed
Check if the pressure relief opening has been taken into consideration and compare
the maximum overpressure of building parts. □ Passed □ Failed
Check if the relief devices are kept clear and that the warning signs for the relief
devices are attached. □ Passed □ Failed
Check if the doors are self-closing. □ Passed □ Failed

Make sure that all doors (in- and outside) are provided with warning signs. □ Passed □ Failed
CYLINDERS Result of test Comments

Make sure that the floor construction of the storage room will carry the load of
cylinders. Refer to chapter 4.4.1. □ Passed □ Failed
Check if the cylinder wall mounting support are fastened securely to a solid and stable
structure. Refer to chapter 5.5. □ Passed □ Failed
Check if the bracket for cylinder are fastened securely. Refer to chapter 5.7. □ Passed □ Failed
Check if the cylinders are labelled with the correct cylinder label. Refer to chapter
5.4.1. □ Passed □ Failed
Make sure that the type of gas, the number of cylinders, the volume and the filling
pressure correspond with the project specification.
Minimum/maximum pressure acceptable: □ Passed □ Failed
202
200 bar system: 190 bar - 200 bar at 15°C

300 bar system: 285 bar - 300 bar at 15°C
Page
Make sure that the protection caps of the cylinders are available. □ Passed □ Failed

NAFFCOInert®
Page 2 of 4
MANIFOLDS Result of test Comments

Check if the specification of the manifolds corresponds with the project specification
(pressure test, check valve, end cap etc.). Refer to chapter 5.6. □ Passed □ Failed
Check if the bolts are tightened and if the manifold mounting support are installed and
fastened to a solid and stable structure. Refer to chapter 5.6.1. □ Passed □ Failed
Check if all bracket for manifold are tightened securely.
Refer to chapter 5.6.1. □ Passed □ Failed
Check if the check valves are connected correctly. Refer to chapter 5.6.2. □ Passed □ Failed
Make sure that all manifold inlet connections Rc1” are equipped with a check valve.
Refer to chapter 5.6.2. □ Passed □ Failed
DISCHARGE HOSE Result of test Comments

Check if the discharge hoses correspond with the project specification. □ Passed □ Failed
Make sure that the discharge hoses are fixed and tightened securely to the
connection port of the constant flow and pressure discharge regulator and to the
check valve. □ Passed □ Failed
Refer to chapter 5.8.
Make sure that the swivel nuts are tightened. Refer to chapter 5.8. □ Passed □ Failed
Check if the discharge hoses have a smooth bending. Minimum bending radius 160
mm. Refer to chapter 5.8. □ Passed □ Failed
PRESSURE GAUGE / ELECTROMAGNETIC RELEASE DEVICE Result of test Comments

Check if the indicated pressure on the pressure gauge corresponds with the project
specification. □ Passed □ Failed
During the commissioning test, make sure that the electromagnetic release devise is
disconnected or isolated from the release control panel. □ Passed □ Failed
PILOT LINE Result of test Comments

Check if the electromagnetic release devises, manual/pneumatic and pneumatic
release devises are installed as indicated in the project documentation. Refer to □ Passed □ Failed
chapter 5.8.
Make sure that the pneumatic release devices are installed and tightened securely
Refer to chapter 5.8. □ Passed □ Failed
Make sure that the pneumatic release devices are connected by pilot hoses. Refer to
chapter 5.8. □ Passed □ Failed
Make sure that the master valve is connected to the pneumatic release devices of the
slave valves by a pilot hose. Refer to chapter 5.8. □ Passed □ Failed
Make sure that the swivel connections of the pilot hoses are tightened securely. Refer
to chapter 5.8. □ Passed □ Failed
Make sure that one electromagnetic release device controls no more than 45
□ Passed □ Failed
203
NAFFCOInert® cylinders.
Make sure that a bleed valve is installed on the last pneumatic release device at the
end of the pilot line. Refer to chapter 5.8. □ Passed □ Failed
Page

NAFFCOInert®
Page 3 of 4
PIPEWORK Result of test Comments

Make sure that the pipework has been flushed. Refer to chapter 5.3.4. □ Passed □ Failed
Check if the pipe supports are fastened securely to a solid and stable structure. Refer
to chapter 5.3.2. □ Passed □ Failed
Make sure that the distance between the pipe supports does not exceed the
maximum recommended distance. Refer to chapter 5.3.2 □ Passed □ Failed
Check if the correct pipe schedule and the correct fittings are used. □ Passed □ Failed
Make sure that the pipework has been leak and pressure tested. Refer to chapter
5.3.7. □ Passed □ Failed
NOZZLE Result of test Comments

Check if the nozzles are installed according to the Vds calculation (size and orifice). □ Passed □ Failed
Check if the nozzles are securely screwed into the fittings. Refer to chapter 5.3.5. □ Passed □ Failed
PILOT LINE Result of test Comments

Make sure that the pilot line test was successfully performed. Refer to chapter 5.9.1. □ Passed □ Failed
ELECTRICAL FUNCTION Result of test Comments

Check the function of the electromagnetic release device by energizing the
electromagnetic release device for 2 minutes. □ Passed □ Failed
If the test of the electromagnetic release device was successful, reset the
electromagnetic release device with the reset tool for electromagnetic release device □ Passed □ Failed
and mount the electromagnetic release device on the master valve.
If a pressure and flow detector switch is installed, check the proper operation. □ Passed □ Failed
Test the contact of the pressure gauge with integrated pressure switch. □ Passed □ Failed
Make sure that a forced-air ventilation stop is provided. □ Passed □ Failed
DOCUMENTS Result of test Comments

®
Make sure that the NAFFCOInert design, installation, operation and maintenance
manual was delivered to the customer. □ Passed □ Failed
Make sure that the detailed operating instructions were delivered to the customer. □ Passed □ Failed
204 Page

NAFFCOInert®
Page 4 of 4
COMMENTS
Commissioning engineer Signature Date
Customer Signature Date
Cut the Commissioning Test for NAFFCOInert® System off from the manual and fax or mail the filled out document to
National Fire Fighting MFG FZCO,
205
P.O. Box: 17014,

Page

NAFFCOInert®
206 Page

NAFFCOInert®
NATIONAL FIRE FIGHTING MANUFACTURING FZCO
PO BOX: 262169, JEBEL ALI SOUTH FREEZONE
DUBAI, UNITED ARAB EMIRATES,
Tel: +971 48151111, Fax: +971 48151222
Email: info@naffco.com, www.naffco.com NF-DIOMM-NAFFCOINERT-2015-11

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Design, Installation, Operation

200 bar systems

PART NUMBER 027650015-NF NF-DIOMM-NAFFCOINERT-2015 - 11

other details included (Page # 128 to #133)

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

Revision 11 ......................................................................................................................................................................................................................................Dec 2021

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

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NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

Part 1 - NAFFCOInert® System - Design Manual

2 GENERAL INFORMATION .................................................................................................................................................................................. 23

3.4.3 Electromagnetic Release Device ..................................................................................................................................................................................... 57

3.4.3.1 Electromagnetic Release Device With and Without Diode..................................................................................................................... 57

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

3.4.3.2 Reset Tool for Electromagnetic Release Device ............................................................................................................................................... 57

3.11.4 Monitoring Switch for Electric Release Devices

3.12 Selector Valve (For Multi-Zone Distribution) .............................................................................................................................................................. 71

3.12.2 Selector Valve with Pilot Cylinder Assembly ...................................................................................... ............................................................... 72

3.13 Pneumatic Control Panel Fixing details ................................................... ................................................... ..................................................................................................... 74

3.13.1 Pressure Reducing Valve .......................................................................................................................................................................................................... 75

3.13.5 Detection and Control .....................................................................................................................................................................................................................

4.1.3 Integrity Test of the Enclosure ............................................................................................................................................................................................... 78

4.2.4.2 Reserve Quantity.................................................................................................................................................................................................................................. 85

4.2.4.3 Unclosable Openings....................................................................................................................................................................................................................... 85

Part 2 - NAFFCOInert® System - Installation, Operation and Maintenance Manual

5.3.8 Electrical Clearance ....................................................................................................................................................................................................................... 123

5.6.2 Manifold Assembly Steps......................................................................................................................................................................................................... 137

5.7.2 Double Row ............................................................................................................................................................................................................................................. 139

5.8 System Assembly ............................................................................................................................................................................................................................. 140

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

5.9.1 Pilot Line Test ...................................................................................................................................................................................................................................... 148

7.3.1.11 Storage Room....................................................................................................................................................................................................................................... 164

7.4.1 5 Year or 10 Year Maintenance (Depending on Local Regulations)........................................................................................ 166

7.4.1.1 Cylinder……. ................................................................................................................................................................................................................................................ 166

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

7.4.2 10 Year Maintenance.................................................................................................................................................................................................................... 167

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

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NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

Title Figure Page

Connecting pneumatic release devices 5-16 140

Resetting the electromagnetic release device 5-17 141

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

Title Figure Page

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

Title Tabl le Page

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

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NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

1. NOTES ON THE DOCUMENTATION

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

1.6. List of Abbreviations

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

LPCB Loss Prevention Certification Board

Approved: acceptance of the relevant Authority Having Jurisdiction.

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for

NF-DIOMM-NAFFCOINERT-2015-11 Design, Installation, Operation and Maintenance Manual for