MTEC.4660.GB-E-1 Operation and Maintenance Manual FHE Serie English Rev. E 03-2020 PDF

DEHUMIDIFIERS FOR RADIANT COOLING SYSTEMS WITH HEAT RECOVERY
FHE
SERIE
TECHNICAL MANUAL
Incorporated in this document are the following:

• Declaration of conformity
• Technical manual
RETAIN FOR FUTURE REFERENCE
• Dimensional drawing
Read and understand

Multiple instructions: the instructions before
&RQVXOWWKHVSHFL¿FSDUW undertaking any work on
the unit
MTEC.4660.GB-E-1 Operation and maintenance manual FHE serie English Rev. E 03-2020
Reproduction, data storage and transmission, even partial, of this publication, in any form, without the prior written authorisation of the Com-
pany, is prohibited. The Company can be contacted for all inquiries regarding the use of its products.
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and instructions regarding use and maintenance at any time, without notice.
Declaration of conformity
We declare under our own responsibility that the below equipment complies in all parts with the CEE and EN directives.
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INDEX
1. INTRODUCTION ................................................................................................................................................................................... 5
1.1 Preliminary information .................................................................................................................................................... 5
1.2 Aim and content of the manual ........................................................................................................................................ 5
1.3 How to store this manual ................................................................................................................................................. 5
1.4 Manual updates ............................................................................................................................................................... 5
1.5 How to use this manual ................................................................................................................................................... 5
1.6 Potential risks .................................................................................................................................................................. 6
1.7 General description of symbols use................................................................................................................................. 7
1.8 Safety symbols used........................................................................................................................................................ 8
1.9 Limitations and prohibited use ......................................................................................................................................... 9
8QLWLGHQWL¿FDWLRQ ........................................................................................................................................................... 9
2. SAFETY ............................................................................................................................................................................................. 10
2.1 Warning re potentially hazardous toxic substances ....................................................................................................... 10
2.2 Refrigerant handling ...................................................................................................................................................... 10
2.3 Prevention of inhalation of high vapor concentrations ................................................................................................... 11
2.4 Procedures in the event of accidental release of refrigerant ......................................................................................... 11
2.5 Main Toxicological information on the type of refrigerant used ...................................................................................... 11
2.6 First aid measures ......................................................................................................................................................... 11
3. TECNICHAL CHARACTERISTICS ..................................................................................................................................................... 12
3.1 Unit description .............................................................................................................................................................. 12
3.2 Accessories description ................................................................................................................................................. 14
3.3 Main components .......................................................................................................................................................... 15
3.4 Aeraulic circuit functioning principles ............................................................................................................................. 15
3.5 Refrigeran circuit layout ................................................................................................................................................. 16
3.6 Operation mode ............................................................................................................................................................. 17
3.7 Technical Data ............................................................................................................................................................... 18
3.8 Hydraulic circuit pressure drops .................................................................................................................................... 19
3.9 (I¿FLHQF\RIWKHKHDWUHFRYHU\....................................................................................................................................... 19
3.10 Fans ............................................................................................................................................................................. 20
3.11 Operation limits ............................................................................................................................................................ 22
3.12 Sound data .................................................................................................................................................................. 23
3.13 Safety devices ............................................................................................................................................................. 24
3.14 Electric data ................................................................................................................................................................. 24
4. INSTALLATION ................................................................................................................................................................................... 24
4.1 General safety guidelines and and use of symbols ....................................................................................................... 24
4.2 Health and safety Considerations .................................................................................................................................. 25
4.3 Personal protective equipment ...................................................................................................................................... 25
4.4 Inspection ...................................................................................................................................................................... 26
4.5 Storage .......................................................................................................................................................................... 26
4.6 Unpacking ...................................................................................................................................................................... 26
4.7 Lifting and handling........................................................................................................................................................ 27
4.8 Location and minimum technical clearances ................................................................................................................. 27
4.9 Condensate draining connections ................................................................................................................................. 28
4.10 Water coil hydraulic connection ................................................................................................................................... 28
4.11 How to vent the unit ..................................................................................................................................................... 28
4.12 Ductwork unit connection............................................................................................................................................. 29
%DODQFLQJDQGFDOLEUDWLRQRIDLUÀRZ ............................................................................................................................ 30
4.14 Serial interface card RS485 (INSE) ............................................................................................................................. 30
4.15 Filter extraction ............................................................................................................................................................ 30
4.16 Heat recovery extraction .............................................................................................................................................. 30
4.17 Electric connections: preliminary safety information .................................................................................................... 31
4.18 Electrical data .............................................................................................................................................................. 32
4.19 Electric connections ..................................................................................................................................................... 32
5. UNIT START UP .................................................................................................................................................................................. 33
5.1 Preliminary checks......................................................................................................................................................... 33
MTEC.4660.IT-E-1 Operation and maintenance manual FHE serie English Rev. E 03-2020
3
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5.2 Description of the control panel ..................................................................................................................................... 34
5.3 Remote control panel..................................................................................................................................................... 36
6. USE ..................................................................................................................................................................................................... 38
6.1 Switch the unit on .......................................................................................................................................................... 38
6.2 Stop ............................................................................................................................................................................... 38
6.3 Stand-by ........................................................................................................................................................................ 38
6.4 How to change the set points ........................................................................................................................................ 39
6.5 Acoustic signal silencing ................................................................................................................................................ 40
6.6 Displaying during an alarm ............................................................................................................................................ 40
6.7 Alarm reset..................................................................................................................................................................... 40
7. UNIT MAINTENANCE ......................................................................................................................................................................... 40
7.1 General warnings........................................................................................................................................................... 40
7.2 Drive access .................................................................................................................................................................. 41
7.3 Periodical checks ........................................................................................................................................................... 41
7.4 Refrigerant circuit repair ................................................................................................................................................ 41
8. DECOMMISSIONING......................................................................................................................................................................... 42
8.1 Disconnect the unit ........................................................................................................................................................ 42
8.2 Disposal, recovery and recycling ................................................................................................................................... 42
8.3 RAEE Directive (Only UE) ............................................................................................................................................. 42
9. DIAGNOSIS AND TROUBLESHOOTING .......................................................................................................................................... 43
)DXOW¿QGLQJ .................................................................................................................................................................. 43
10.DIMENSIONAL DRAWINGS .............................................................................................................................................................. 44
4
1. INTRODUCTION
1.1 Preliminary information

Reproduction, storage or transmission of any part of this publication in any form, without the prior written consent of the Company, is pro-
hibited.
The unit to which these instructions refer, is designed to be used for the the purposes described and to be operated in accordance with
these instructions.
The Company will not be liable for claims for damage caused to persons, animals, material goods or property caused by improper installa-
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This document is intended to provide information only and does not form a contract with third parties.
The Company pursues a policy of constant improvement and development of its products and therefore reserves the right to change the
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1.2 Aim and content of the manual

These instructions are intended to provide the information required for the selection, installation, use and maintenance of the unit.
They have been prepared in accordance with the European Union laws and with the technical standards in force at the date of issue of the
instructions.
The instructions contain all the necessary information to prevent any reasonably foreseeable misuse.
1.3 How to store this manual

The manual must be kept in a suitable place with easy access for users and operators, protected from dust and damp.
The manual must always accompany the unit during the entire life cycle of the same and therefore must be transferred to any subsequent
user.
1.4 Manual Update

It is recommended that the manual is updated to the latest revision available.
If updates are sent to the customer they must be added to this manual.
The latest information regarding the use of its products is available by contacting the Company.
1.5 How to use this manual
The manual is an integral part of the unit.
Users or operators must consult the manual before performing any operation and especially so when transporting, han-
dling, installating, maintaining, or dismantling the unit in order to eliminate uncertainty and reduce risk.
In these instructions symbols have been used (described in the following paragraphs) to draw the attention of operators
and users to the operations that have a higher risk and which must be performed safely.
5
1.6 Potential Risks

Whilst the unit has been designed to minimize any risk posed to the safety of people who will interact with it, it has not been technically
possible to eliminate completely the causes of risk. It is therefore necessary to refer to the requirements and symbolism below:
LOCATION OF
RISK
POTENTIAL RISK METHOD OF INJURY PRECAUTIONS
Thermal heat Avoid any contact,

Small stab wounds. Contact
exchangers. use protective gloves.
Insertion of sharp objects

Cuts, eye damage, Never put objects through the pro-
Fan and fan grilles. through the grid while the fans
broken bones. tection grilles.
are operating.
Internal component:
Avoid any contact, use protective
compressors and Burns. Contact
gloves.
discharge pipes
Internal component: Adequate protection of power ca-

Electrocution, Defect in the supply cable in-
electric cables and bles, ensure correct earthing of all
severe burns. sulation, live metallic parts.
metallic parts metal parts.
Fire due to short circuit or Size cables and mains protection

External to unit: Poisoning,
overheating of the supply ca- system in accordance with iee regu-
unit enclosure severe burns.
ble external to unit. lations.
High evaporating pressure Carefully check the evaporating

Low pressure safety Poisoning,
causing a refgrigerant dis- pressure during the maintenance
valve. severe burns.
charge during maintenance. operations.
If possible, do not open the refrig-

Poisoning, Activation of the high pressure erant circuit valve; carefuly check
High pressure safety
severe burns, safety valve with the refriger- the condensing pressure; use all
valve.
hearing loss. ant circuit open. the personal protective equipment
required by law.
Fire due to natural disasters

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Entire unit ([WHUQDO¿UH or combustions of elements
equipment
nearby unit
Plan the necessary precautions both
electrical (suitable differential ma-
gneto and electrical protection of the
Explosion, injuries, burns, poi- Breakages, failures due to natu- supply lines; greatest care during the
Entire unit
soning, folgoramento for natural ral disasters or earthquake connections of the metal parts), and
disasters or earthquake. mechanical (special anchors or sei-
smic vibrations to prevent breakages
or accidental falls ).
6
1.7 General Description of Symbols Used
Safety symbols combined in accordance with ISO 3864-2:
BANNED
A black symbol inside a red circle with a red diagonal indicates an action that should not be performed.
WARNING
A black graphic symbol added to a yellow triangle with black edges indicates danger.
ACTION REQUIRED
A white symbol inserted in a blue circle indicates an action that must be done to avoid a risk.
Safety symbols combined in accordance with ISO 3864-2:
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7
1.8 Safety symbols used
GENERAL RISK
Observe all signs placed next to the pictogram. The failure to follow directions may create a risk situation that may
be injurious to the user.
ELECTRICAL HAZARD
Observe all signs placed next to the pictogram.
The symbol indicates components of the unit and actions described in this manual that could create an electrical
hazard.
MOVING PARTS
The symbol indicates those moving parts of the unit that could create risk.
HOT SURFACES
The symbol indicates those components with high surface temperature that could create risks.
SHARP SURFACES
The symbol indicates components or parts that could cause stab wounds.
EARTH CONNECTION
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READ AND UNDERSTAND THE INSTRUCTIONS

Read and understand the instructions of the machine before any operations.
RECOVER OR RECYCLE MATERIAL
1.9 Limitations and prohibited use

The machine is designed and built exclusively for the uses described in “Limitations of use” of the technical manual.
Any other use is prohibited because it may pose a potential risk to the health of operators and users.
The unit is not suitable for operations in environments:

• excessively dusty or potentially explosive atmospheres;
• where there are vibrations;
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• where there are aggressive atmospheres
8
8QLWLGHQWLÀFDWLRQ
Each unit has a rating plate that provides key information regarding the machine.
The rating plate may differ from the one shown below as the example is for a standard unit without accessories.
For all electrical information not provided on the label, refer to the wiring diagram.
A facsimile of the label is shown below:
Manufacturer: PD322111
1FHE.026K-2A 123456
Modello Matricola
Model Serial number
1 21/2017
Categoria PED Data di fabbricazione
PED Category Manifacture date
R134A
Tipo refrigerante
Refrigerant type
0,59 Kg
2
Gruppo fluido
Fluid group
1430
GWP LE
0,84 ton
MI
C1 C2
C3 C4
Carica refrigerante CO2 Equivalente

Refrigerant charge CO2 Equivalente
SI
230V-1ph-50Hz 3,50 A 0,60 kW

Tensione-Fasi-Frequenza
Voltage-Phases-Frequency F.L.A. (A) F.L.I. (kW)
C
LATO BASSA PRESSIONE LATO ALTA PRESSIONE

LOW PRESSURE SIDE HIGH PRESSURE SIDE
FA
10 bar 20,06 bar

PS PS
Min Max Min Max
-30 °C +130 °C -30 °C +130 °C

Temperatura di progetto Temperatura di progetto
Design temperature Design temperature
80 Kg
Peso a vuoto
Weight
Contiene gas fluorurati ad effetto serra disciplinati dal protocollo di Kyoto

Contains fluorinated greenhouse gasses covered by the Kyoto protocol
The product label should never be removed from the unit.
9
2. SAFETY
2.1 Warning re potentially hazardous toxic substances
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• 5D7HWUDÀXRURHWKDQH+)&DE\ZHLJKW&$61R
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The lubricant used is polyester oil. Please refer to the information provided on the compressor data plate.
For further information regarding the characteristics of the refrigerant and oil used, refer to the safety data sheets
available from the refrigerant and oil manufacturers.
Main Ecological Information Regarding the Types of refrigerants Fluids used.
(19,5210(17$/3527(&7,21Read the ecological information and the following instructions carefully.
2.1.3 Persistence and degradation

The refrigerants used decompose in the lower atmosphere (troposphere) relatively quickly. The decomposed products are highly dispersible
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compounds (as stipulated in the guidelines to the UNECE). The constituent refrigerants of R407C (R32, R125 and R134a), do not damage
the ozone layer. These substances are regulated under the Montreal Protocol (revised 1992) and regulations EC no. 2037/200 of 29 June
2000.
2.1.4 Effects of discharges
Discharges into the atmosphere of this product does not cause a long-term contamination.
2.1.5 Exposure controls and personal protection

Wear protective clothing and gloves, protect your eyes and face
2.1.6 Professional exposure limits

R134A
HFC-134a TWA 1000 ppm
2.2 Refrigerant handling
Users and maintenance personnel must be adequately informed about the possible risks of handling potentially
toxic substances. Failure to follow such instructions can cause damage to personnel or to the unit.
10
2.3 Prevent inhalation of high vapor concentration

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heavier than air and can form dangerous concentrations near the ground where the ventilation rate is lower. Always ensure adequate venti-
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between liquid refrigerant and the eyes or skin.
2.4 Procedures to be adopted in the event of accidental release of refrigerant

Ensure suitable personal protection (especially respiratory protection) during cleaning operations.
If deemed safe, isolate the source of the leak. If the leakage is small and if adequate ventilation is provided, allow the refrigerant to evapo-
rate. If the loss is substantial ensure that measures are taken to adequately ventilate the area.
Contain spilled material with sand, earth or other suitable absorbent material.
Do not allow the refrigerant to enter drains, sewers or basements, as pockets of vapor can form.
2.5 Main Toxicological Information Regarding the Type of refrigerant used

2.5.1 Inhalation
A high atmospheric concentration can cause anaesthetic effects with possible loss of consciousness. Prolonged exposure may lead to
irregular heartbeat and cause sudden death. Higher concentrations may cause asphyxia due to the reduced oxygen content in the atmo-
sphere.
2.5.2 Contact with skin

Splashes of nebulous liquid can produce frostbite. Probably not hazardous if absorbed trough the skin. Repeated or prolonged contact may
remove the skin’s natural oils, with consequent dryness, cracking and dermatitis.
2.5.3 Contact with eyes

Splashes of liquid may cause frostbite.
2.5.4 Ingestion
While highly improbable, may produce frostbite.
2.6 First Aid Measures
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2.6.1 Inhalation
Move the person away from the source of exposure, keep him/her warm and let him/her rest. Administer oxygen if necessary. Attempt
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assistance.
2.6.2 Contact with skin

In case of contact with skin, wash immediately with lukewarm water. Thaw tissue using water. Remove contaminated clothing. Clothing may
stick to the skin in case of frostbite. If irritation, swelling or blisters appear, seek medical assistance.
11
2.6.3 Contact with eyes
Rinse immediately using an eyewash or clean water, keeping eyelids open, for at least ten minutes. Seek medical assistance.
2.6.4 Ingestion
Do not induce vomiting. If the injured person is conscious, rinse his/her mouth with water and make him/her drink 200-300ml of water. Seek
immediate medical assistance.
2.6.5 Further medical treatment

Treat symptoms and carry out support therapy as indicated. Do not administer adrenaline or similar sympathomimetic drugs following
exposure, due to the risk of cardiac arrhythmia.
3. TECHNICAL CHARACTERISTICS
3.1 Unit description
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DUHDZLWKYHU\KLJKHQHUJ\HI¿FLHQFFRPELQHGZLWKUDGLDQWFRROLQJV\VWHPV7KHXQLWVKDYHEHHQGHVLJQHGWRJUDQWWKHGHKXPLGL¿FDWLR-
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lows.
3.1.1 Frame
All units are made from hot-galvanised thick sheet metal, painted with polyurethane powder enamel and stoved at 180°C to ensure the best
resistance against the cor-rosions. The frame is self-supporting with removable panels. The drip tray is made in painted galvanized steel
and it is present in all units. The standard colour is RAL 9016.
3.1.2 Refrigerant circuit

The refrigerant circuit is made by using in-ternational primary brands components and according to ISO 97/23 concerning welding proce-
dures. The refrigerant gas used in is R134a.
3.1.3 Compressor
The compressor is alternative type equip-ped and thermal overload protection by a klixon embedded in the motor winding. It’s mounted on
rubber vibration dampers to reduce the noise.
3.1.4 Heat exchangers

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PLQLXP¿QVLVPP
3.1.5 Heat recovery

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3.1.6 Water coil

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IDFWRU7KHZDWHUFRLOLVXVHGWRLPSURYHWKHGHKXPLGL¿FDWLRQFDSDFLW\LQVXPPHUPRGHZKLOHLWLVEHLQJXVHGDVDKHDWLQJFRLOLQZLQWHU
mode. All units are supplied with a built-in modulating 3-way valve which keeps constant the air supply temperature under varying external
air conditions.
3.1.7 Water condenser

Type-brazed plate, made of stainless steel AISI 316; The water condenser is used in the summer season as cooling integration.
3.1.8 Fans
The supply fan is centrifugal type, double inlet with forwards blades, with EC Fan mo-tor directly connected. The exhaust fan is plug fan
type with backwards blades, with EC fan motor directly connected.
12
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tial disposal, class G4, according to EN 779:2002.
3.1.10 Microprocessor
All FHE units are supplied with an advanced software for the complete control of the hydronic and air distribution side.
The software can manage:
- The management of the operation according to a probe of temperature and humidity.
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- Activation of of winter or summer sensible load integration, according to the summer or winter set point
- Management of supply air temperature trough discharge limit probe sensor (standard).
- Modulating valve for the proper management of the water battery power
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- Management dumper
- Machine Allarm display
- Supervisor and BMS connection trough serial card RS485 (Optional) a/o XWEB Module (Optional).
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- Antifreeze management.
- Summer/Winter commutation.
3.1.11 Electrical panel

The switch board is made according to norms CEE 73/23 and 89/336 . The accessibility to the board is possible after removing the front
panel of the unit and the OFF positioning of the main switch. The board is prepared for connection to the main power supply and the control
signals, it is equipped with a terminal board with voltage free contacts for :
remote ON - OFF ,
Summer / Winter ( Open = Summer ; Closed = Heating )
Hygrostat (only in the version with Remote mechanical Thermostat - hygrostat )
Thermostat (only in the version with Remote mechanical Thermostat - hygrostat ).
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as a function of the pressure drops of the plant.
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3.1.12 Control and Protection Devices

All units are supplied with the following control and protection devices:
1. Defrost thermostat; which signals to the microprocessor control, the necessity to make the defrost cycle and determines its duration.
2. Temperature sensor; it is a device that signals to the electronic control the overcoming limits(water inlet temperature to the water coil).
In such a situation the operation of the compressor is disabled, by leaving the fan only in operation, when the conditions are restored within
the limits, the compressor will restart. This feature is normally used in winter operation. the probe blocks the operation of the compressor
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period necessarily requires the use of a remote thermostat with seasonal summer winter change over (not supplied).
3.1.13 Built in electronic sensor (RGDD)

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3.1.14 Test
All the units are fully assembled and wired at the factory, carefully evacuated and dried after leak tests under pressure and then charged
with ecologic refrigerant. They are all fully operational tested before shipment. They all conform to European Directives and are individually
marked with the CE label and provided with Conformity Declaration.
13
3.2 Accessories description
3.2.1 Serial interface card RS485 (INSE)

This interface card enables the controller to comunicate with other devices using Modbus protocol.
3.2.2 Remote control panel (PCRL)

This panel can be mounted up to 50m (maximum) from the unit and replicates all of the control functions. It is connected using a twin cable
of 2.5 mm2 section.
14
3.3 Main components
Air Filter
Control panel with

display
Exhaust Fan with EC

+LJKW (I¿FHQF\ +HDW
motor
Recovery
Supply Fan with EC

Direct Expansion + motor
Water Coil
Air Filter
Compressor
Motorized regulaton
dumper Plate Exchanger
Fresh Air Supply Air

PD[
3.4 Aeraulic circuit functioning principles Return Air W.C. Exhaust Air
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ble volume by 460 m3 (0.3 vol/h), in compliance with regional and na-
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m3KLQWKHZLQWHUPRGHDQGLV¿[HGWRP3/h in summer mode.
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DUHFRYHU\UDWLQJRILQWHUPVRIDLUWHPSHUDWXUH&DQGDLUWHP-
perature 20°C. The stale air is expelled from the environment by the fan
(1), while the outside air is sucked through the fan (2).
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GOHVERWKWKHEDODQFHRIÀRZVRIDLUWKDWWKHDLUÀRZUHFLUFXODWLRQVXP-
mer. 1
3
Return Air
PD[
15
3.5 Refrigeran circuit layout
5HIULJHUDQWFLUFXLWIXQFWLRQLQJSULQFLSOHV
7KHIXQFWLRQLQJRIWKHGHKXPLGL¿HUPRGHO)+(LVDVIROORZVWKHIDQ 14 15 16 17
takes the air humid from the ambient trough the fan (7) and it’s made
JRWKURXJKWKH¿OWHUDQGWKHFURVVÀRZKHDWSUHFRROLQJZDWHU
coil (2) where it’s cooled and brought to a condition closed to satura- 1 1
tion. Now it passes through the evaporating coil (3) where it’s fatherly
FRROHGDQGGHKXPLGL¿HG$WWKLVWLPHWKHIXQFWLRQDOLW\PRGHPD\EH
The air passes now through the condensing coil (5) where it’s post
heated (with a constant humidity) and in the post-cooling coil (6) where
it’s reported to the required conditions.
7
12
'HKXPLGLÀFDWLRQZLWKQHXWUDODLU
The cooling system works partially in the water through the heat ex-
changer (10) and partially in the air with the heat exchanger (5) which 18
will then make a post-heating at constant humidity blowing air in in the
11
room in thermally neutral conditions.
'HKXPLGLÀFDWLRQZLWKFRROLQJ
2 3 5
7KHFRROLQJFLUFXLWLQWKLVFDVHSHUIRUPLQJZRUNVRIWKHFRQGHQ-
sation in the water through the heat exchanger (10), the heat exchan-
ger (5) is intercepted by the valve (6) and the air supplied in the room is
6
the same as leaving the evaporator coil (3), cold and dried.
9 8
19 4
1
10
13
1 $LU¿OWHU 10 Water condenser

2 Pre-Cooling coil 11 Exhaust fan with EC motor
3 Evaporator 12 +LJKHI¿FLHQF\FURVVÀRZKHDWUHFRYHU\
4 Compressor 13 Return motorized damper
5 Air Condenser 14 WC exhaust air
6 6ROHQRLG9DOYH 15 Fresh air
7 Supply fan with EC 16 Exhaust Air
8 Dryer Filter 17 Electrical Panel
9 Body rolling 18 Modulating 3-way valve
16
3.6 Operation mode Fresh Air Supply Air

PD[
3.6.1 Summer operation (COMPRESSOR ON)
Whit this selected mode the unit renews the ambient air with the out- Return Air W.C. Exhaust Air
VLGHWKURXJKWKHKHDWH[FKDQJHUIRUKLJKHI¿FLHQF\DLUÀRZLVLQFUHDVHG PD[ PD[
so as to allow operation of refrigerant circuit; for this purpose the r
recycling dumper will be open, the supply fan is operated at maximum
capacity and the unit works with external air and partial recirculation. 2
7KHSRVVLEOHIXQFWLRQVLQWKLVFRQ¿JXUDWLRQDUH
• Renewal + Air Dryers neutral: The condensing unit partially in air and
partially in the water through the condenser plate, obtaining dry air and
thermally neutral.
• 5HQHZDO 'HKXPLGL¿FDWLRQ ZLWK FRROLQJ 7KH XQLW RSHUDWHV ZLWK
RIWKHFRQGHQVDWLRQZDWHUREWDLQLQJGU\DQGFRROHGDLU
1
3
Return Air
PD[
7KH)+(XQLWVFDQQRWRSHUDWHZLWKRXWWKHLQWHJUDWLRQRIFROGKRWZDWHUFRLO,QWKHFDVHRIORZZDWHUÀRZRUDEVHQ-
ce the unit is kept in stand-by and the safety devices are activated.
Fresh Air Supply Air

3.6.1 Winter operation and middle season (COMPRESSOR OFF) PD[
Whit this selected mode, the unit renews the ambient air with the out- Return Air W.C. Exhaust Air
VLGHWKURXJKWKHKHDWH[FKDQJHURIKLJKHI¿FLHQF\ PD[ PD[
7KHDLUÀRZLVUHGXFHGWRWKHYDOXHUHTXLUHGE\WKHVWDQGDUG·
vol / h), the recirculation damper is closed and the unit operates with
IUHVKDLU
7KHSRVVLEOHIXQFWLRQVLQWKLVFRQ¿JXUDWLRQDUH
• Renewal with heated air: The compressor is switched off, the bat-
tery can be supplied with hot water from radiant system, (even due
WRWKHKLJKHI¿FLHQF\RIWKHKHDWH[FKDQJHULVDEOHWRREWDLQD
supply air temperature 17°C, without using hot water and ambient
air temperature of -5 ° C), and behaves like a normal air handling
with recovery.
,QZLQWHUPRGHWKH)+(XQLWVKDYHWKHFRPSUHVVRURIIDQGRSHUDWHDVDKHDWLQJGHYLFHZLWKKLJKHI¿FLHQF\KHDW
recovery .
17
3.7 Technical Data
FHE Model 26
Refrigerant R134A
Refrigerant charge Kg 0,59
Global warming potential (GWP) 1430
Equivalent CO2 charge t 0,84
8VHIXOGHKXPLGLÀFDWLRQFDSDFLW\IURPWKHQHWK\JURVFRSLFFRQWHQWRIWKHH[WHUQDODLU (1)
l/24h 30,1
Total cooling Power (from the net hygroscopic content of the external air) (1)
W 1380
Recovered winter heating power (2) W 950
(IÀFHQF\ZLQWHUUHFRYHU\ (2)
90
(IÀFHQF\VXPPHUUHFRYHU\ (1)
70
Power supply 93K+] 230/1/50

Compressor absorbed power (1)
W 340
Supply fan absorbed power (min÷nom÷max) W ··
Return fan absorbed power (min÷nom÷max) W ··
Supply fan nominal useful prevalence (nom÷max) Pa ·
Return fan nominal useful prevalence (nom÷max) Pa ·
&RLOZDWHUÁRZPLQ¸PD[ l/h ·

Water pressure drop (nom.) kPa 15
6XPPHUVXSSO\DLUÁRZ m3/h 260

2XWGRRUDLUÁRZ6XPPHU:LQWHU m /h
3
·
:LQWHUVXSSO\DLUÁRZ m /h
3
·
Nominal available static pressure Pa 50
Sound power level (3) dB(A) 47

Sound Pressure Level (4)
dB(A) 39
Weight kg 80
Performance refer to the following conditions:

5RRP7HPS&58$PELHQW7HPS&58)UHVK$LU6\VWHPYROXPHPK:DWHU,1&:DWHU)ORZOK
$PELHQW7HPS&585RRP7HPS&)UHVK$LUV\VWHPDWPD[LPXP
(3) Sound Power level according to ISO 9614.
6RXQG3UHVVXUHOHYHOPHDVXUHGDWPWIURPWKHXQLWLQIUHH¿HOGFRQGLWLRQVDFFRUGLQJZLWK,62DWWKHQRUPDOZRUNLQJFRQGLWLRQV
18
3.8 Hydraulic circuit pressure drops
The graphics below show the pressure drops of the hydraulic circuit of the FHE unit; They include the water coil, the plate heat exchanger
and the 3 way modulating valve.
Pressure drop (KPa) 80,0
70,0
60,0
50,0
40,0
30,0
20,0
10,0
150 200 250 300 350 400
:DWHU)ORZOK
(IÀFLHQF\RIWKHKHDWUHFRYHU\
WINTER (Room conditions 20°C, 50% u.r. - Ambient conditions -5°C, 80% u.r.)
98%
96%
94%
92%
90%
88%
80 90 100 110 120 130
Fresh air (m3K
SUMMER (Room conditions 26°C, 60% u.r. - Ambient conditions 35°C, 50% u.r.)
84%
82%
80%
78%
76%
74%
72%
80 90 100 110 120 130
Fresh air (m3K
19
3.10 Fans
Supply fan
160
Available static pressure (Pa)
140
7
120
6
100 5
80 4
60 3
2
40
20 1
0
240 245 250 255 260 265
6XSSO\DLUÁRZP K
3
Input power 1 2 3 4 5 6 7
260 m3/h 18W 30W 36W 40W 46W 51W 60W
Exhaust fan
160
Available static pressure (Pa)
140
7 7 7
6 6 6
120
5 5 5
100
4 4 4
80
60 3 3 3
2 2 2
40
20 1 1 1
0
60 70 80 90 100 110 120 130
6XSSO\DLUÁRZP3K
Input power 1 2 3 4 5 6 7
80 m3/h 10W 11W 11W 12W 12W 12W 12W
100 m3/h 11W 13W 15W 15W 17W 18W 18W
130 m3/h 11W 13W 15W 19W 22W 30W 34W
20
3.11 Operation limits
Winter operation
35
Room temperature (°C)
30
25
20
15
10
-25 -20 -15 -10 -5 0 5 10 15 20 25
Ambient temperature (°C)
Summer operation
35
Room temperature (°C)
30
25
20
15
15 20 25 30 35 40 45
Ambient temperature (°C)
7KHXQLWVDUHGHVLJQHGDQGPDQXIDFWXUHGWRZRUNZLWKUHODWLYHKXPLGLW\IURPD
The units MUST be used within the operation limit indicated in the diagrams. The warranty will be invalidated if the
units are used in ambient conditions outside the limits reported. If there is the necessity to operate in different condi-
WLRQVSOHDVHFRQWDFWRXUWHFKQLFDORI¿FH
The units are designed and manufactured to work with ambient temperatures from 10°C to 50°C
The units are designed to operate within false ceiling and/or heated technical room. The units are NOT suitable for
outdoor installations and / or technical room w/o heat (attics, rooms communicating with the outside) as it may form
condensation on the walls and inside the unit cabinet causing damages.
21
3.12 Sound Data

7KHQRLVHRIWKH)+(XQLWLVGH¿QHGPDLQO\E\WKHQXPEHURIUHYROXWLRQVRIWKHIDQVUHVSRQVLEOHIRUWKHJUHDWHUSDUWRIWKHVRXQGSRZHU
JHQHUDWHGE\WKHXQLW2EYLRXVO\IRUDJLYHQDLUÀRZUDWHWKHQXPEHURIUHYROXWLRQVRIWKHIDQVZLOOEHVPDOOHULIWKHUHTXLUHGVWDWLFSUHVVXUH
will be low, while it will be higher ( and therefore with greater noise level) in case of highest static pressure requirement. The table below
shows the trend of sound levels according to some operating points (model / static pressure) of the unit:
Sound Data
Octave band (Hz) Lw Lp

Mod.26 Pa 63 125 250 500 1K 2K 4K 8K
dB dB(A) dB(A)
dB dB dB dB dB dB dB dB
7 140 68,1 59,3 53,2 51,7 50,6 45,2 41,8 32,7 68,9 55 47
6 120 66,1 57,3 51,2 49,7 48,6 43,2 39,8 30,7 66,9 53 45
5 100 65,1 56,3 50,2 48,7 47,6 42,2 38,8 29,7 65,9 52 44
4 80 63,1 54,3 48,2 46,7 45,6 40,2 36,8 27,7 63,9 50 42
3 60 61,1 52,3 46,2 44,7 43,6 38,2 34,8 25,7 61,9 48 40
2 50 60,1 51,3 45,2 43,7 42,6 37,2 33,8 24,7 60,9 47 39
1 20 59,1 50,3 44,2 42,7 41,6 36,2 32,8 23,7 59,9 46 38
Lw: Sound power level according to ISO 9614.

/S6RXQG3UHVVXUHOHYHOPHDVXUHGDWPWIURPWKHXQLWLQIUHH¿HOGFRQGLWLRQVDFFRUGLQJZLWK,62GXFWHGXQLW
3.13 Safety devices

3.11.1 High pressure switch
The high pressure switch stops the unit when the condensing pressure is higher than the set value. The restart is manual (you need to press
the button on the pressure switch) and it can be carried out only when the pressure is under the value indicated by the differential set.
3.11.2 Defrost thermostat

It’s a device which signals to the electronic control, the necessity to make the defrost cycle. Once the defrost cycle is activated, the defrost
thermostat determines also its conclusion.
3.11.3 Defrost probe

It is a device that signals to the electronic control the necessity to activate the defrost operation. Once the defrost cycle is activated, the NTC
probe defrost determines also its conclusion ( used in versions without electronic probe of temperature and humidity) .
3.11.4 Defrost
7KHIURVWRQWKHFRLOREVWUXFWVWKHDLUÀRZUHGXFHVWKHDYDLODEOHH[FKDQJHDUHDDQGFRQVHTXHQWO\WKHXQLWSHUIRUPDQFHVDQGFDQVHULRXVO\
damage the system. All the units are supplied, standard, with a control which defrost automatically the heat exchanger if necessary. This
control provides a temperature probe (defrost thermostat) on the unit evaporator. When the defrost cycle is required, the microprocessor
control (according to set parameters) starts working (the yellow led turns on) according to these modalities:
- air defrost: the compressor is switched off while the fan keeps on working.
For both modalities, at the end of the defrost cycle, there is the dripping time.
For the model GH50-50W, the defrost is cyclical (the microprocessor makes the defrost cyle every 30 minutes), for the GH100-200, both
air cooled and water cooled, the defrost cycle is made in relation to the defrost panel.
22
3.14 Electric data
Electric data
Power supply 9a+] 230/1/50 Control circuit 9a+] 24/1/ 50
Auxiliary circuit 9a+] 230/1/50 Fans power supply 9a+] 230/1/50
4. INSTALLATION
4.1 General safety guidelines and and use of symbols
Before undertaking any task the operator must be fully trained in the operation of the machines to be used and
their controls. They must also have read and be fully conversant with all operating instructions.
All maintenance must be performed by TRAINED personnel and be in accordance with all national and local regu-
lations.
The installation and maintenance of the unit must comply with the local regulations in force at the time of the installa-
tion.
Avoid contact and do not insert any objects into moving parts.
4.2. Health and safety Considerations
The workplace must be kept clean, tidy and free from objects that may prevent free movement. Appropriate ligh-
ting of the work place shall be provided to allow the operator to perform the required operations safely. Poor or too
strong lighting can cause risks.
Ensure that work places are always adequately ventilated and that respirators are working, in good condition and
comply fully with the requirements of the current regulations.
23
4.3 Personal protective equipment
When operating and maintaining the unit, use the following personal protective equipment listed below, required
by law.
Protective footwear.
Eye protection.
Protective gloves.
Respiratory protection.
Hearing protection.
4.4 Inspection
:KHQLQVWDOOLQJRUVHUYLFLQJWKHXQLWLWLVQHFHVVDU\WRVWULFWO\IROORZWKHUXOHVUHSRUWHGRQWKLVPDQXDOWRFRQIRUPWRDOOWKHVSHFL¿FDWLRQV
of the labels on the unit, and to take any possible precautions of the case. Not observing the rules reported on this manual can create
dangerous situations. After receiving the unit, immediately check its integrity. The unit left the factory in perfect conditions; any eventual
damage must be questioned to the carrier and recorded on the Delivery Note before it is signed. The company must be informed, within
8 days, of the extent of the damage. The Customer should prepare a written statement of any severe damage.
%HIRUHDFFHSWLQJWKHXQLWFKHFN
• The unit did not suffer any damage during transport;
• The delivered goods are conforming to what shown in the delivery note.
In Case of Damage
• List the damage on the delivery note
• Inform the Company of the extent of the damage within 8 days of receipt of the goods. After this time any claim will not be considered.
• A full written report is required for cases of severe damage.
4.5 Storage
Units should be stored under cover and ideally, should remain in their packaging. The tools that are supplied for opening the electrics box
should be formally transferred to the person responsible for the plant.
24
4.6 Unpacking
Packaging could be dangerous for the operators.
It is advisable to leave packaged units during handling and remove it before the installation.
The packaging must be removed carefully to prevent any possible damage to the machine.
The materials constituting the packaging may be different in nature (wood, cardboard, nylon, etc.).
The packaging materials should be seperated and sent for disposal or possible recycling to specialist waste
companies.
4.7 Lifting and handling

When unloading the unit, it is strongly recommended that sudden movements are avoided in order to protect the refrigerant circuit, copper
tubes or any other unit component. Units can be lifted by using a forklift or, alternatively, using belts. Take care that the method of lifting does
not damage the side panels or the cover. It is important to keep the unit horizontal at all time to avoid damage to the internal components.
4.8 Location and minimum technical clearances
The unit has to be installed such that maintenance and repair is possible. The warranty does not cover costs for the
provision of lifting apparatus, platforms or other lifting systems required to perform repairs during warranty period.
The installation site should be chosen in accordance with EN 378-1 and 378-3 standards. When choosing the
installation site, all risks caused by accidental refrigerant leakage should be taken into consideration.
In the drawing the installation type is illustrated. It is important not to cover the
top and bottom part of the unit to allow the connections and the frontal part to
DOORZWKHFOHDQLQJDQGWKHUHSODFHPHQWRIWKHDLU¿OWHUVWKHFRQWUROFLUFXLWWKH
maintenance of the electrical panel .
25
4.9 Condensate draining connections

Condensate draining should be done with a rubber pipe passing through the condensate draining connection located on the suction side of
the unit. The discharge hole is 20mm diameter.
PP
Air intake
Condensate Draining
Water inlet
Power supply and
electrical connections Water outlet
(cable 2x1,5 mt)
On the condensate discharge pipe it must be installed a syphon with a minimum height equal to the suction pressure
of the fan, in any case never less than 35mm.
4.10 Water coil hydraulic connection

7KHGHKXPLGL¿HULVFRQQHFWHGWRWKHFRROHGZDWHUSODQWWRJUDQWWKHLQOHWLQDPELHQWRIDLULQQHXWUDOFRQGLWLRQV2QWKHXQLWVWKHFRQQHFWLRQ
is done using the female gas attacks ½” always present on the unit.
We recommend to power the unit with a dedicated water pump for a correct operation. It is strongly recommended
WRFRQQHFWWKHXQLWXSVWUHDPRIWKHV\VWHPPDQLIROGWRHQVXUHDSURSHUZDWHUÀRZVHHLOOXVWUDWLRQ
OK! NO!
26
The inlet maximum water temperature allowed is 50°C.

The inlet maximum water temperature allowed is 10°C.
È fortemente consigliato collegare l’unità a monte del collettore dell’impianto in modo da assicurare la corretta
alimentazione idrica.
4.11 How to vent the unit

For a correct operation of the system it is mandatory to remove the air from the hydraulic circuit. To do that it’s recommended to use the
proper vent valve positioned in front of the unit (see picture).
9HQWYDOYH
27
4.12 Ductwork unit connection

The FHE units must be connected to the air ducts in order to supply the treated clean air in the bedrooms and the living room and return air
from the polluted rooms (kitchen, bathrooms). The air transfer through the different rooms generally occurs through the gaps under doors,
and are not, as a rule , requested return air grilles. A typical example of air distribution is shown in the following scheme:
Fresh Air
Exhaust Air
Exhaust air intake
6XSSO\DLUÀRZ Recirculating Air 6XSSO\DLUÀRZ
6XSSO\DLUÀRZ
Exhaust air intake
,QRUGHUWRHQDEOHWKHSURSHURSHUDWLRQRIWKHXQLWLWLVLPSRUWDQWWRHQVXUHDFRQVWDQWDLUÀRZYHU\FORVHWRWKH
QRPLQDOYDOXH7KHPD[LPXPDOORZHGGHYLDWLRQLV:KHQFRPPLVVLRQLQJWKHXQLWFKHFN¿UVWWKHDLUÀRZ
UDWHDQGFKDQJHLIQHFHVVDU\WKHVHWWLQJRIWKHWULPPHUVRIWKHIDQVDFFRUGLQJWRWKHVSHFL¿FSODQWUHTXLUHPHQWV
(ducts length / required static pressure ).
RECOMMENDED AIR SPEED
Model Ø Distribution duct (mm) $LUÁRZP3K Area (m2) $LUVSHHGPV
FHE 26 160 260 0,0201 3,6
Ø Return and exhaust ducts (mm) $LUÁRZP3K Area (m2) $LUVSHHGPV
FHE 26 125 80 0,0123 1,8
FHE 26 125 100 0,0123 2,3
FHE 26 125 130 0,0123 3,0
28
%DODQFLQJDQGFDOLEUDWLRQRIDLUÁRZ
)RUDSURSHURSHUDWLRQRIWKHXQLWLWLVQHFHVVDU\WREDODQFHWKHDLUÀRZLQWKHGLIIHUHQWVHFWLRQVRIGXFWZRUNVDVKDYLQJJHQHUDOO\SDWKV
ZLWKGLIIHUHQWOHQJWKV\RXZLOOKDYHWRLQKRPRJHQHRXVSUHVVXUHORVVDQGFRQVHTXHQWO\GLIIHUHQWDLUÀRZUDWHV,QIDFWLQWKHDEVHQFHRI
DGHTXDWHEDODQFLQJRIWKHSUHVVXUHGURSVIRUH[DPSOHE\UHIHUULQJWRWKHGLDJUDPLQSDUDJUDSKZHZLOOKDYHKLJKDLUÀRZLQSRLQW
slightly lower than the point 2 and very low at point 3. The same can be said of the points 4, 5 and 6.
To balance the pressure drops of the ductworks we will act on the calibration grids placed in the various supply and return grills (Component
QRWVXSSOLHGIURPWKH&RPSDQ\DGMXVWLQJWKHVHFWLRQRIWKHJULGWKHJUHDWHUGLDPHWHUORZHUSUHVVXUHGURSJUHDWHUDLUÀRZ,WFDUULHGRXW
WKHEDODQFLQJRIWKHV\VWHP\RXZLOOKDYHWRSURFHHGZLWKWKHFDOLEUDWLRQRIWKHXQLWDLUÀRZE\DGMXVWLQJWKHEXLOWLQWULPPHUV
4.13.1 Supply and exhaust fan adjusting trimmers
$OOXQLWVDUHIDFWRU\FDOLEUDWHGZLWKWKHQRPLQDODLUÀRZYDOXHVVHHWDEOHDWSDUDQGDYDLODEOHVWDWLFSUHVVXUH

of 50 Pa.
PT1 : trimmer of the supply fan in summer mode.

PT2 : trimmer of the supply fan in winter mode.
PT3 : trimmer of the exhaust fan.
As we see in the following picture, the trimmer has a single measurement range:
MS1 MS2 MS3
Indicatively it can be considered that the displacement of the trimmer from one number to the next or previous, leads
WRDQLQFUHDVHGHFUHDVHRIWKHDYDLODEOHSUHVVXUHRI3DDWWKHQRPLQDODLUÀRZ
The factory settings are: PT1 : 5 ; PT2 : 4 ; PT3 : 4 .
)RUWKHSXUSRVHRIQRLVHUHGXFWLRQLWLVQHFHVVDU\WKDWWKHDLUYHORFLW\LQWKHGXFWV1(9(5H[FHHGPVHF$ERYH
WKLVDLUVSHHGLWJUHDWO\UHGXFHVWKHGHKXPLGL¿FDWLRQFDSDFLW\RIWKHXQLWDQGLQFUHDVHVWKHULVNRIFRQGHQVDWLRQRI
ZDWHUHQWUDLQPHQWLQWKHDLUGXFWVZLWKSRWHQWLDOGDPDJHVWRWKHIXUQLWXUHDQGRUÀRRUV
29
4.14 Serial interface card RS485 (INSE)
Supervision system interface serial board (MODBUS RS485 available only)The installation of the card will allow the unit to be plugged in
and connected to a system with MODBUS protocol. This system allows you to remotely monitor all parameters of the unit and change their
YDOXHV7KHVHULDOLQWHUIDFHERDUGLVQRUPDOO\¿WWHGDWWKHIDFWRU\ZKHUHLWLVSURYLGHGVHSDUDWHO\LVQHFHVVDU\WRUHVSHFWWKHSRODULW\RIWKH
wiring as shown in the diagram. Any reversal of polarity will result in the non-functioning unit. The supervision connectivity cable must be
telephone one type 2x0, 25 mm27KHXQLWLVFRQ¿JXUHGDWWKHIDFWRU\ZLWKVHULDODGGUHVV,QFDVHRIXVLQJWKH02'%86V\VWHP\RXFDQ
request the list of variables by contacting the assistance.
TELEPHONE LINE
CONNECTION CABLE WITH

SERIAL INTERFACE CARD ADAPTER UNITS
4.14 Filter extraction

5HPRYHWKHIURQWSDQHOVDQGH[WUDFWWKH¿OWHUVDVVKRZQLQWKHLPDJHEHORZ
7KH¿OWHULQJPDWHULDOFDQEHUHXVHGE\EORZLQJRUDVSLUDWLRQZLWKDLU'XHWRLWVKLJKHI¿FLHQF\WKH¿OWHUPDWHULDOFDQ
EHUHJHQHUDWHGQRPRUHWKDQWKUHHRUIRXUWLPHVDIWHUZKLFKLWZLOOEHQHFHVVDU\WRUHSODFHWKH¿OWHULWVHOI
4.15 Heat recovery extraction
Remove the heat recovery as shown in the picture. Never use water to clean the heat recovery. Only use a vacuum
FOHDQHUWRDYRLGGDPDJHVRQWKH¿QV
30
(OHFWULFFRQQHFWLRQVSUHOLPLQDU\VDIHW\LQIRUPDWLRQ
The electric panel is located inside the unit at the top of the technical compartment where the various components of the refrigerant circuit
are also to be found. To access the electrical board, remove the front panel of the unit:
Power connections must be made in accordance to the wiring diagram enclosed with the unit and in accordance
to the norms in force.
Make sure the power supply upstream of the unit is (blocked with a switch). Check that the main switch handle is
padlocked and it is applied on the handle a visible sign of warning not to operate.
,WPXVWEHYHUL¿HGWKDWHOHFWULFVXSSO\LVFRUUHVSRQGLQJWRWKHXQLWHOHFWULFQRPLQDOGDWDWHQVLRQSKDVHVIUHTXHQ-
cy) reported on the label in the front panel of the unit.
3RZHUFDEOHDQGOLQHSURWHFWLRQPXVWEHVL]HGDFFRUGLQJWRWKHVSHFL¿FDWLRQUHSRUWHGRQWKHIRUPRIWKHZLULQJ
diagram enclosed with the unit.
The cable section must be commensurate with the calibration of the system-side protection and must take into
DFFRXQWDOOWKHIDFWRUVWKDWPD\LQÀXHQFHWHPSHUDWXUHW\SHRILQVXODWLRQOHQJWKHWF
Power supply must respect the reported tolerances and limits: If those tolerances should not be respected, the
warranty will be invalidated.
Make all connections to ground provided by law and legislation.
Before any service operation on the unit, be sure that the electric supply is disconnected.
FROST PROTECTION
If opened, the main switch cuts the power off to any electric heater and antifreeze device supplied with the unit, in-
cluding the compressor crankcase heaters. The main switch should only be disconnected for cleaning, maintenance
or unit reparation.
31
4.17 Electrical data
The electrical data reported below refer to the standard unit without accessories.
In all other cases refer to the data reported in the attached electrical wiring diagrams.
7KHOLQHYROWDJHÀXFWXDWLRQVFDQQRWEHPRUHWKDQRIWKHQRPLQDOYDOXHZKLOHWKHYROWDJHXQEDODQFHEHWZHHQ
RQHSKDVHDQGDQRWKHUFDQQRWH[FHHGDFFRUGLQJWR(1,IWKRVHWROHUDQFHVVKRXOGQRWEHUHVSHFWHG
please contact our Company.
Model 26
Power supply 9a+] 230/1/50
Control board 9a+] 9
Auxiliary circuit 9a+] 230/1/50
Fans power supply 9a+] 230/1/50
Line section mm 2
1,5
PE section mm 2
1,5
Electric data may change for updating without notice. It is therefore necessary to refer always to the wiring diagram
present in the units.
4.19 Electric connections
The numbering of the terminals may change without notice. For their connection is mandatory to refer to the wiring
diagram supplied along with the unit.
All terminals shown below are present in the terminal board inside the electrical box. All electric connections have to be made by the in-
staller, in site.
0L1 0N1
UNIT POWER SUPPLY
Units are supplied with voltage 230/1/50; it is recommended to interpose a main switch on the
power line. Please refer to the wiring diagram for the correct sizing.
5(027(6800(5:,17(5&+$1*(29(5
L1 88 To remotely switch the unit from heating to cooling.
Connections must be potential-free.
The units are supplied with bridged terminals.
Contact closed, unit in WINTER mode,
Contact open, unit SUMMER mode.
5(027(212))
43-5 9 To switch the unit on or off remotely.
Connections must be potential-free.
The units are supplied with bridged terminals.
Contact closed, unit ON,
Contact open, unit OFF.
32
HOT WATER PUMP

26 N1 To be connected to terminals 26 and N1; with maximum absorption of current of 1A. In the case
RIKLJKHULQSXWFXUUHQWDQDSSURSULDWHUHOD\PXVWEHXVHG,QWKHVWDQGDUGFRQ¿JXUDWLRQWKH
microprocessor turns off the water pump when the set point is reached. This solution allows an
important reduction of electric power consumption when the set point is reached or when the
unit is in standby.
REMOTE CONTROL PANEL

60 61 The remote control panel replicates all of the functions on the main controller panel and can be
connected up to a maximum distance of 50 meters from the unit. The panel has to be connec-
ted to the unit by 2 wires having diameter 0.75 mm2. The power supply cables must be separa-
ted from the remote control panel wires, in order to avoid interference. The control panel has to
be connected to the terminals 60 - and 61 + . The control panel cannot be installed in an area
- + subject to excessive vibration, corrosive gases, is a dirty environment or has a high humidity
level. The ventilation openings must not be blocked.
90 91 0N1
92 REMOTE GENERAL ALARM
For remote display of a general alarm, connect the visual or audible device between terminals
90-91-92.
Contacts 90/91 NC (Normally closed)
Contacts 91/92 NO (Normally opened)
5. UNIT START UP
5.1 Preliminary checks
Before starting the unit the checks detailed in this manual of the electric supply and connections, the hydraulic system and the refrigerant
circuit, should be performed.
Start-up operations must be performed in accordance with the instructions detailed in the previous paragraphs.
5.1.1 Before start-up
Damage can occur during shipment or installation. It is recommended that a detailed check is made, before the
installation of the unit, for possible refrigerant leakages caused by breakage of capillaries, pressure switch con-
nections, tampering of the refrigerant pipework, vibration during transport or general abuse suffered by the unit.
9HULI\WKDWWKHXQLWLVLQVWDOOHGLQDZRUNPDQOLNHPDQQHUDQGLQDFFRUGDQFHZLWKWKHJXLGHOLQHVLQWKLVPDQXDO
&KHFNWKDWDOOSRZHUFDEOHVDUHSURSHUO\FRQQHFWHGDQGDOOWHUPLQDOVDUHFRUUHFWO\¿[HG
97KHRSHUDWLQJYROWDJHEHWZHHQSKDVHV567LVWKHRQHVKRZQRQWKHXQLWODEHOV
• Check that the unit is connected to the system earth.
• Check that there is no refrigerant leakage.
• Check for oil stains, sign of a possible leak.
• Check that the refrigerant circuit shows the correct standing pressure on the pressure gauges (if present) otherwise use external ones.
• Check that the Shrader port caps are the correct type and are tightly closed.
• Check that all water connections are properly installed and all indications on unit labels are observed.
7KHV\VWHPPXVWEHÀXVKHG¿OOHGDQGYHQWHGLQRUGHUWRHOLPLQDWHDQ\DLU
• Check that the water temperatures are within the operation limits reported in the manual.
• Before start up check that all panels are replaced in the proper position and locked with fastening screws.
Do not modify internal wiring of the unit as this will immediately invalidate the warranty.
33
5.2 Description of the control panel
UP Key
(menu navigation, scroll through
the parameters, scroll values of the
Summer mode key parameters..)
DOWN Key
(menu navigation, scroll through
the parameters, scroll values of the
Winter mode key parameters..)
SET key
(set-point view, access to menu, con-
¿UP WKH YDOXH RI WKH SDUDPHWHU GX- MENU’ KEY
ring the adjustment...) (access and navigation of the menu)
5.2.1 Display icons
ICON FUNCTION
Icon ON when the display show a value of temperature or pression.
(°C = Celsius degrees; °F = Fahrenheit degrees; BAR = pression in Bar; PSI = pression in Psi)
Time frame between defrosts.
Icon blinking on alarm.
Function menu active.

Icon ON: Defrost cycle activated.
Icon blinking: Defrost cycle timeout activated.
,FRQEOLQNLQJZDWHUÀRZDODUP
Circulating pump is active.
Icon ON if the fans are running.

Icon ON: the compressor is turned on
Icon blinking: the compressor is in the ignition timing.
,FRQ21LIWKH9I3IDQG9IDRXWSXWVDUHDFWLYH
Icon ON if the unit is turned ON and show the working mode of the unit: Cooling or heating.
Icon HP and LP blinking if high pressure or low pressure alarms are active.
34
5.2.2 Keys function
KEY FUNCTION
03UHVVDQGUHOHDVH makes it possible to enter the functions menu.
6(73UHVVDQGUHOHDVHLQWKHPDLQGLVSOD\
makes it possible to display the set points;
Summer humidity set, in the bottom line will appear the label SETU.
Winter humidity set, in the bottom line will appear the label SETI.
Summer temperature set, in the bottom line will appear the label SETC.
Winter temperature set, in the bottom line will appear the label SETH
3UHVVIRUVHFRQGVDQGUHOHDVHLQWKHPDLQGLVSOD\
makes it possible to modify the set points;
Allows the display of the temperatures

1 click: The bottom line displays tbfr: Heat recovery inlet temperature
2 clicks: The bottom line displays Tamb: Ambient temperature
3 clicks: The bottom line displays tpre: temperature after water coil
4 clicks: The bottom line displays rH: ambient humidity
In programming mode it allows the user to scroll through parameter codes or to change values.
In standard mode allows the display of the different temperatures in opposite way of the above arrow.
In programming mode allows to scroll through the parameter codes or increases the values.
If pressed for 5 seconds, it makes it possible to switch the unit on or off in summer mode.
If pressed for 5 seconds, it makes it possible to switch the unit on or off in winter mode.
If the unit is in OFF or in stand-by mode, all the set-points will be shown by pressing repeatedly the SET key. When the unit is ON in an
VSHFL¿FRSHUDWLRQPRGHLWZLOOEHSRVVLEOHWRUHDGRQO\WKHVHWSRLQWVUHODWHGWRLW
35
5.3 Remote control panel
5.3.1 Installation
7KHUHPRWHFRQWUROSDQHOLVPRXQWHGRQDSDQHOZLWK[PPFXWRXW¿[HGZLWKVFUHZ
7RREWDLQ,3SURWHFWLRQIRUWKHSDQHOXVHWKHUXEEHUJDVNHW5*:9RSWLRQDO)RUZDOOPRXQWLQJXVHWKH9.,7SODVWLFDGDSWHUDVLOOX-
strated in the picture.
Electric data can be updated without notice. It is therefore necessary to always refer to the wiring diagram provided
in the unit.
If there is damage to the remote control or there is a faulty connection, failure of communication will be indicated in the
display with the message “noL” (no link).
36
5.3.2 Display icons
ICON FUNCTION
Icon ON when the display show a value of temperature or pression.
(°C = Celsius degrees; °F = Fahrenheit degrees; BAR = pression in Bar; PSI = pression in Psi)
Time frame between defrosts.
Icon blinking on alarm.
Function menu active.

Icon ON: Defrost cycle activated.
Icon blinking: Defrost cycle timeout activated.
,FRQEOLQNLQJZDWHUÀRZDODUP
Circulating pump is active.
Icon ON if the fans are running.

Icon ON: the compressor is turned on
Icon blinking: the compressor is in the ignition timing.
,FRQ21LIWKH9I3IDQG9IDRXWSXWVDUHDFWLYH
Icon ON if the unit is turned ON and show the working mode of the unit: Cooling or heating.
Icon HP and LP blinking if high pressure or low pressure alarms are active.
5.2.2 Key function
KEY FUNCTION
03UHVVDQGUHOHDVH makes it possible to enter the functions menu.
6(73UHVVDQGUHOHDVHLQWKHPDLQGLVSOD\
makes it possible to display the set points;
Summer humidity set, in the bottom line will appear the label SETU.
Winter humidity set, in the bottom line will appear the label SETI.
Summer temperature set, in the bottom line will appear the label SETC.
Winter temperature set, in the bottom line will appear the label SETH
3UHVVIRUVHFRQGVDQGUHOHDVHLQWKHPDLQGLVSOD\
makes it possible to modify the set points;
Allows the display of the temperatures
1 click: The bottom line displays tbfr: Heat recovery inlet temperature
2 clicks: The bottom line displays Tamb: Ambient temperature
3 clicks: The bottom line displays tpre: temperature after water coil
4 clicks: The bottom line displays rH: ambient humidity
In programming mode it allows the user to scroll through parameter codes or to change values.
In standard mode allows the display of the different temperatures in opposite way of the above arrow.
In programming mode allows to scroll through the parameter codes or increases the values.
If pressed for 5 seconds, it makes it possible to switch the unit on or off in summer mode.
If pressed for 5 seconds, it makes it possible to switch the unit on or off in winter mode.
If the unit is in OFF or in stand-by mode, all the set-points will be shown by pressing repeatedly the SET key. When the unit is ON in an
VSHFL¿FRSHUDWLRQPRGHLWZLOOEHSRVVLEOHWRUHDGRQO\WKHVHWSRLQWVUHODWHGWRLW
37
6. USE
6.1 Switch the unit on
In order to power the unit, turn the main switch to the ON position.
The display shows the ambient temperature (top) and ambient humidity (bottom).
6.1.1 Summer mode
Press the key for 5 seconds, the unit turn on in summer mode; the icon blinking, after few seconds the (fan) and (pump)
icons will be activated. After few minutes the icon will be is ON and the compressor will be activated.
6.1.2 Winter mode
Press the , key for 5 seconds, the unit turn on in winter mode; the icon blinking, after few seconds the (fan) and (pump) icons
will be activated. After few minutes the icon will be is ON and the compressor will be activated.
6.2 Stop
6.2.1 Summer mode
To stop the unit in heating mode, press the key . The LED switches off. The unit goes into stand-by mode.
6.2.2 Winter mode
To stop the unit in heating mode, press the key . The LED switches off. The unit goes into stand-by mode.
6.3 Stand-by
When the unit is switched off from the keyboard or the remote panel, it goes into standby mode. In this mode, the microprocessor control
displays the sensor readings and is also able to manage alarm situations. The only visible signal on the display is the green led of circuit1
and the temperatures. If the unit is switched off from remote ON/OFF the label OFF is displayed.
Stand-by display
In stand-by mode, the display shows the label OFF only if the remote ON/OFF potential-free contact is open.
38
6.4 How to change the set points
When modifying or varying the machine’s operating parameters, make sure that you do not create situations that
FRQÀLFWZLWKWKHRWKHUVHWSDUDPHWHUV
The complete display of the 3 set points (heating, domestic hot water, cooling) is ONLY available when the unit is in
stand-by mode. It is suggested to put the unit in stand by when modifying set points. If the unit is not in stand-by, the
only editable parameters are the ones related to the operation mode of the unit (eg. In heating mode it is only possible
to change the heating and domestic hot water set points, in cooling mode it is only possible to change the cooling and
domestic hot water set points.)
Select the required set point using the key. The following label appears at the bottom of the display:
SEtU Summer humidity set point;
SEtI Winter humidity set point;
SEtC Summer temperature set point;
SEtH Winter humidity set point.
To set the required set-points press again the NH\IRUVHFRQGVWKHFXUUHQWYDOXHEOLQNLQJDQGFDQEHPRGL¿HGXVLQJWKH ,

keys to set the new value. Then press the key to save the parameter and exit the menu.
All set points refer to the ambient air recovery conditions.
6.4.1 Adjustable parameters
7KHDGMXVWDEOHVHWSRLQWVWKDWFDQEHPRGL¿HGE\WKHHQGXVHUDUH
Label Function Adjustment limit Default value
SEt U Summer humidity set point ·

SEt I Winter humidity set point ·
SEt C Summer temperature set point ·& 26°C
SEt H Winter temperature set point ·& 22°C
PAS Password (Contact the Company)
The units are supplied with a very sophisticated control system with many other parameters that are not adjustable by the
end user; these parameters are protected by a manufacturer password.
39
6.5 Acoustic signal silencing

Pressing and releasing one of the keys; the buzzer is switched off, even if the alarm condition remains in place.
6.6 Displaying during an alarm
alarm code in the bottom line:

• HP + + alarm code in the bottom line*: high pressure alarm
• + alarm code in the bottom line*
* the bottom side of the display shows alternately the alarm code and the normal visualization.
LP, HP, FLOW and icons, are blinking in presence of an alarm.
6.7 Alarm reset

Press the key (the menu AlrM appears at the bottom right of the display). Press the key to display the alarm event. In case of
multiple alarms use the using the , keys, to scroll through the list of the active alarms.
7KHUHDUHWZRW\SHVRIDODUPV
5HVHWDODUPV
RST label appears on the upper part of the display. In this case press the key to reset.
1RQUHVHWDODUPV
nO label appears on the upper part of the display. In this case the alarm is permanent; contact the company service.
7. MANUTENZIONE UNITÀ
7.1 General warnings
Maintenance can:
• .HHSWKHHTXLSPHQWRSHUDWLQJHI¿FLHQWO\
• Prevent failures
• Increase the equipment life
It is advisable to maintain a record book for the unit which details all operations performed on the unit as this will
facilitate troubleshooting.
Maintenance must be performed in compliance with all requirements of the previous paragraphs.
Use personal protective equipment required by regulations as compressor casings and discharge pipes are at high
WHPSHUDWXUHV&RLO¿QVDUHVKDUSDQGSUHVHQWDFXWWLQJKD]DUG
40
7.2 Drive access

Access to the unit once installed, should only be possible to authorized operators and technicians. The owner of the equipment is the com-
pany legal representative, entity or person owns the property where the machine is installed.
They are fully responsible for all safety rules given in this manual and regulations.
7.3 Periodical checks
The start-up operations should be performed in compliance with all requirements of the previous paragraphs.
All of the operations described in this chapter MUST BE PERFORMED BY TRAINED PERSONNEL ONLY. Before
commencing service work on the unit ensure that the electric supply is disconnected. The top case and dischar-
ge line of compressor are usually at high temperature. Care must be taken when working in their surroundings.
$OXPLQLXPFRLO¿QVDUHYHU\VKDUSDQGFDQFDXVHVHULRXVZRXQGV&DUHPXVWEHWDNHQZKHQZRUNLQJLQWKHLU
VXUURXQGLQJV$IWHUVHUYLFLQJUHSODFHWKHFRYHUSDQHOV¿[LQJWKHPZLWKORFNLQJVFUHZV
(YHU\PRQWKV
It is advisable to perform periodic checks in order to verify the correct working of the unit.
Check that safety and control devices work correctly as previously described.
&KHFNDOOWKHWHUPLQDOVRQWKHHOHFWULFERDUGDQGRQWKHFRPSUHVVRUDUHSURSHUO\¿[HG
• Check and clean the sliding terminals of the contactors.
• Check for water leaks in the hydraulic system.
&KHFNFRUUHFWRSHUDWLRQRIWKHÀRZVZLWFKDQGFOHDQWKHVWUDLQHUVRQWKHSLSHZRUN
• Check the compressor crankcase heater has the proper supply and is functioning correctly.
&KHFNWKHVWDWHRIWKH¿QQHGFRLOUHPRYLQJDQ\GHEULVRUOHDYHV,ISRVVLEOHXVHFRPSUHVVHGDLUWREORZWKURXJKLQWKHRSSRVLWHGLUHFWLRQ
WRWKHDLUÀRZ,IWKHFRLOLVKHDYLO\FORJJHGFOHDQLWZLWKDORZSUHVVXUHZDVKHUWDNLQJFDUHWRDYRLGGDPDJLQJWKHDOXPLQLXP¿QV
• Check mounting of fan blades and their balancing.
(QGRIVHDVRQVRUXQLWVZLWFKHGRII
If the unit is to be left out of commission for a long period, the hydraulic circuit should be drained down. This operation is compulsory if the
DPELHQWWHPSHUDWXUHLVH[SHFWHGWRGURSEHORZWKHIUHH]LQJSRLQWRIWKHÀXLGLQWKHFLUFXLWZDWHURU*O\FROPL[
7.4 Refrigerant circuit repair
If the refrigerant circuit is to be emptied, all the refrigerant must be recovered using the correct equipment.
For leak detection, the system should be charged with nitrogen using a gas bottle with a pressure reducing valve, until 15 bar pressure is
UHDFKHG$Q\OHDNDJHLVGHWHFWHGXVLQJDEXEEOHOHDN¿QGHU,IEXEEOHVDSSHDUGLVFKDUJHWKHQLWURJHQIURPWKHFLUFXLWEHIRUHEUD]LQJXVLQJ
the proper alloys.
Never use oxygen instead of nitrogen: explosions may occur.
41
Site assembled refrigerant circuits must be assembled and maintained carefully, in order to prevent malfunctions.
Therefore:
• $YRLGRLOUHSOHQLVKPHQWZLWKSURGXFWVWKDWDUHGLIIHUHQWIURPWKDWVSHFL¿HGDQGWKDWDUHSUHORDGHGLQWRWKHFRPSUHVVRU
• In the event of a gas leakage on machines using refrigerant R134A, R410A even if it is only a partial leak, do not top up. The entire charge
PXVWEHUHFRYHUHGWKHOHDNUHSDLUHGDQGDQHZUH¿JHUDQWFKDUJHZHLJKHGLQWRWKHFLUFXLW
• When replacing any part of the refrigerant circuit, do not leave it exposed for more than 15 minutes.
• ,WLVLPSRUWDQWZKHQUHSODFLQJDFRPSUHVVRUWKDWWKHWDVNEHFRPSOHWHGZLWKLQWKHWLPHVSHFL¿HGDERYHDIWHUUHPRYLQJWKHUXEEHUVHDOLQJ
caps.
• When replacing the compressor following a burn out, it is advisable to wash the cooling system with appropriate products including a
¿OWHUIRUDFLG
• When under vacuum do not switch on the compressor.
8. DECOMMISSIONING
8.1 Disconnect the unit
All decommissioning operations must be performed by authorized personnel in accordance with the national legisla-
tion in force in the country where the unit is located.
• Avoid spills or leaks into the environment.

• Before disconnecting the machine please recover:
• the refrigerant gas;
• Glycol mixture in the hydraulic circuit;
• the compressor lubricating oil.
Before decommissioning the machine can be stored outdoors, providing that it has the electrical box, refrigerant circuit and hydraulic circuit
intact and closed.
8.2 Disposal, recovery and recycling

The frame and components, if unusable, should be taken apart and sorted by type, especially copper and aluminum that are present in
large quantities in the machine.
All materials must be recovered or disposed in accordance with national regulations.
8.3 RAEE Directive (only UE)
The crossed-out bin symbol on the label indicates that the product complies with regulations on waste electrical and
electronic equipment.
The abandonment of the equipment in the environment or its illegal disposal is punishable by law.
This product is included in the application of Directive 2012/19/EU on the management of waste electrical and electronic equipment
(WEEE).
The unit should not be treated with household waste as it is made of different materials that can be recycled at the appropriate facilities.
Inform through the municipal authority about the location of the ecological platforms that can receive the product for disposal and its subse-
quent proper recycling.
The product is not potentially dangerous for human health and the environment, as it does not contain dangerous substances as per Direc-
tive 2011/65/EU (RoHS), but if abandoned in the environment it has a negative impact on the ecosystem.
5HDGWKHLQVWUXFWLRQVFDUHIXOO\EHIRUHXVLQJWKHXQLWIRUWKH¿UVWWLPH,WLVUHFRPPHQGHGQRWWRXVHWKHSURGXFWIRUDQ\SXUSRVHRWKHUWKDQ
that for which it was designed, as there is a risk of electric shock if used improperly.
42
9. DIAGNOSIS AND TROUBLESHOOTING

9.1 )DXOWÀQGLQJ
All units are checked and tested at the factory before shipment, however, during operation an anomaly or failure can occur.
%(685(725(6(7$1$/$5021/<$)7(5<28+$9(5(029('7+(&$86(2)7+()$8/75(3($-
7('5(6(70$<5(68/7,1,55(92&$%/('$0$*(727+(81,7
Code Alarm description Cause Solution
9HUL¿FDUHWRWDOHDVVHQ]DGLDULDQHO
circuito idraulico ed eventuale spurgo
AhiP High pressure alarm ,QVXI¿FLHQWZDWHUÀRZ GHOODVWHVVD9HUL¿FDGHOODSRUWDWD
d’acqua all’unità (vedere catalogo
tecnico).
APBa Room sensor temperature error PBa
APBr Pre-treatment sensor error PBr
APbf Antifreeze sensor error PBf Damaged sensor Contact the service department
APBu Room sensor humidity error PBu
APBc Antifreeze sensor error PBc
AtFr Antifreeze alarm PBFr

Alarm of exceeded temperature/pres- Only warning; the unit restore automa-
sure threshold tically its operation mode.
AtMr Too high fresh air temperature PBFr
&KHFNWKHZDWHUÀRZWRWKHXQLWVHH
AFL Flussostato ,QVXI¿FLHQWZDWHUÀRZ
technical catalog).
Defrost ended by maximum defrost Only warning; the unit restore automa-
Atdf Defrost time too long
time tically its operation mode.
AHFr 2YHUFRPLQJDLU¿OWHUZRUNLQJKRXUV 'LUW\DUL¿OWHU &OHDQDQGRUUHSODFHWKHDLU¿OWHU
43
238 210 134
FHE 26
8
148
29 68
6 7
9
351
2
300
303,5 278,5
10.DIMENSIONAL DRAWINGS
163
10
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MTEC.4660.IT-E-1 Operation and maintenance manual FHE serie English

44
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1 ARIA DI MANDATA
2 ARIA DI RIPRESA
3 ARIA DI RIPRESA WC
4 ARIA ESTERNA
51 480 51
5 ARIA ESPULSA 582 452 582
6 SCARICO CONDENSA Ø 20 111 180 182 109

91
7 INGRESSO ALIMENTAZIONE ELETTRICA 4
5 5
8 USCITA ACQUA Ø 1/2 “ GM 12 12 5
Ø 5 Ø
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Ø 1
10 SPAZIO PER ESTRAZIONE FILTRI
Rev. E 03-2020
45
46
47
HIDROS SpA
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6HGHRSHUDWLYD9LD(0DWWHLƒFDSƒ3LRYHGL6DFFR3G,WDO\
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Technical data shown in this booklet are not binding.
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The reference languages for the whole documentation are Italian and English. The other languages are to be considered only as guidelines.

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DEHUMIDIFIERS FOR RADIANT COOLING SYSTEMS WITH HEAT RECOVERY

Incorporated in this document are the following:

Read and understand

1.1 Preliminary information

1.2 Aim and content of the manual

1.3 How to store this manual

1.4 Manual Update

1.5 How to use this manual

The manual is an integral part of the unit.

1.6 Potential Risks

Thermal heat Avoid any contact,

Insertion of sharp objects

Internal component: Adequate protection of power ca-

Fire due to short circuit or Size cables and mains protection

High evaporating pressure Carefully check the evaporating

If possible, do not open the refrig-

Fire due to natural disasters

1.7 General Description of Symbols Used

Safety symbols combined in accordance with ISO 3864-2:

Safety symbols combined in accordance with ISO 3864-2:

1.8 Safety symbols used

READ AND UNDERSTAND THE INSTRUCTIONS

RECOVER OR RECYCLE MATERIAL

1.9 Limitations and prohibited use

The unit is not suitable for operations in environments:

Carica refrigerante CO2 Equivalente

230V-1ph-50Hz 3,50 A 0,60 kW

LATO BASSA PRESSIONE LATO ALTA PRESSIONE

10 bar 20,06 bar

-30 °C +130 °C -30 °C +130 °C

Contiene gas fluorurati ad effetto serra disciplinati dal protocollo di Kyoto

The product label should never be removed from the unit.

• 5D7HWUDÀXRURHWKDQH +)&D E\ZHLJKW&$61R

Main Ecological Information Regarding the Types of refrigerants Fluids used.

(19,5210(17$/3527(&7,21Read the ecological information and the following instructions carefully.

2.1.3 Persistence and degradation

2.1.5 Exposure controls and personal protection

2.1.6 Professional exposure limits

2.2 Refrigerant handling

2.3 Prevent inhalation of high vapor concentration

2.4 Procedures to be adopted in the event of accidental release of refrigerant

2.5 Main Toxicological Information Regarding the Type of refrigerant used

2.5.2 Contact with skin

2.5.3 Contact with eyes

2.6 First Aid Measures

2.6.2 Contact with skin

2.6.5 Further medical treatment

3.1.2 Refrigerant circuit

3.1.4 Heat exchangers

3.1.5 Heat recovery

3.1.6 Water coil

3.1.7 Water condenser

3.1.11 Electrical panel

3.1.12 Control and Protection Devices

3.1.13 Built in electronic sensor (RGDD)

3.2 Accessories description

3.2.1 Serial interface card RS485 (INSE)

3.2.2 Remote control panel (PCRL)

3.3 Main components

• 5D7HWUDÀXRURHWKDQH+)&DE\ZHLJKW&$61R

(19,5210(17$/3527(&7,21Read the ecological information and the following instructions carefully.

Power supply 93K+] 230/1/50

&RLOZDWHUÁRZPLQ¸PD[ l/h ·

$OOXQLWVDUHIDFWRU\FDOLEUDWHGZLWKWKHQRPLQDODLUÀRZYDOXHVVHHWDEOHDWSDUDQGDYDLODEOHVWDWLFSUHVVXUH

03UHVVDQGUHOHDVH makes it possible to enter the functions menu.

03UHVVDQGUHOHDVH makes it possible to enter the functions menu.