Installation Manual YIDH - B22S

Installation
and
Maintenance
Manual
INVERTER-DRIVEN
MULTI-SPLIT SYSTEM
HEAT PUMP
AIR CONDITIONERS
Type Model
(H,Y,C)IDH015B22S
(H,Y,C)IDH018B22S
(H,Y,C)IDH024B22S
Ducted (H,Y,C)IDH027B22S
(High Static) (H,Y,C)IDH030B22S
(H,Y,C)IDH036B22S
(H,Y,C)IDH048B22S
(H,Y,C)IDH054B22S
(H,Y,C)IDM006B22S
(H,Y,C)IDM008B22S
(H,Y,C)IDM012B22S
(H,Y,C)IDM015B22S
(H,Y,C)IDM018B22S
Ducted
(H,Y,C)IDM024B22S
(Medium Static)
(H,Y,C)IDM027B22S
(H,Y,C)IDM030B22S
(H,Y,C)IDM036B22S
(H,Y,C)IDM048B22S
(H,Y,C)IDM054B22S
IMPORTANT:
READ AND UNDERSTAND

THIS MANUAL BEFORE
INSTALLING THIS HEAT
PUMP AIR CONDITIONER.
KEEP THIS MANUAL FOR
FUTURE REFERENCE. P5417013
Important Notice
●● Johnson Controls, Inc. pursues a policy of continuing improvement in design and performance in its
products. As such, Johnson Controls, Inc. reserves the right to make changes at any time without
prior notice.
●● Johnson Controls, Inc. cannot anticipate every possible circumstance that might involve a potential hazard.
●● This heat pump air conditioning unit is designed for standard air conditioning applications only. Do
not use this unit for anything other than the purposes for which it was intended for.
●● The installer and system specialist shall safeguard against leakage in accordance with local codes.
The following standards may be applicable, if local regulations are not available. International
Organization for Standardization: (ISO 5149 or European Standard, EN 378). No part of this manual
may be reproduced in any way without the expressed written consent of Johnson Controls, Inc..
●● If you have questions, please contact your distributor or dealer.
●● This manual provides common descriptions, basic and advanced information to maintain and service
this heat pump air conditioning unit which you operate as well for other models.
●● This heat pump air conditioning unit has been designed for a specific temperature range. For optimum
performance and long life, operate this unit within the range limits according to the table below.
Temperature
Maximum Minimum
Cooling Indoor 89oF DB/73oF WB (32oC DB/23oC WB) 69oF DB/59oF WB (21oC DB/15oC WB)
Operation Outdoor 118oF DB (48oC DB) * 14oF DB (-10oC DB) *
Heating Indoor 80oF DB (27oC DB) 59oF DB ( 15oC DB)

Operation Outdoor 59oF WB (15oC WB) * -4oF WB (-20oC WB) *
DB: Dry Bulb, WB: Wet Bulb
* The temperature may change depending on the outdoor unit.
●● This manual should be considered as a permanent part of the air conditioning equipment and should
remain with the air conditioning equipment.
Product Inspection upon Arrival

1. Upon receiving this product, inspect it for any damages incurred in transit. Claims for damage, either
apparent or concealed, should be filed immediately with the shipping company.
2. Check the model number, electrical characteristics (power supply, voltage, and frequency rating),
and any accessories to determine if they agree with the purchase order.
3. The standard utilization for this unit is explained in these instructions. Use of this equipment for
purposes other than what it is designed for is not recommended.
4. Please contact your local agent or contractor as any issues involving installation, performance, or
maintenance arise. Liability does not cover defects originating from unauthorized modifications
performed by a customer without the written consent of Johnson Controls, Inc. Performing any
mechanical alterations on this product without the consent of the manufacturer will render your
warranty null and void.
P5417013-rev.3 i
TABLE OF CONTENTS
1. Introduction......................................................................................................................................................1
2. Safety Instructions...........................................................................................................................................1
3. Before Installation............................................................................................................................................7
3.1 Combination of Outdoor Unit and Indoor Unit.........................................................................................7
3.2 Transportation and Handling...................................................................................................................7
3.3 Factory-Supplied Accessories.................................................................................................................7
3.4 Necessary Tools and Instrument List for Installation...............................................................................8
4. Installation Location.........................................................................................................................................8
5. Installation Work............................................................................................................................................ 11
5.1 Location of Suspension Bolts................................................................................................................ 11
5.2 Installing Suspension Bolts...................................................................................................................12
5.3 Intaking Air from Bottom Side................................................................................................................12
5.4 Working Procedure................................................................................................................................13
5.5 Installation of Optional Parts or Field-Supplied Parts............................................................................17
5.6 Wired Controller Settings .....................................................................................................................17
5.7 Installation of Auxiliary Heater (Field-Supplied) ....................................................................................18
5.7.1 Selection of Auxiliary Heater........................................................................................................18
5.7.2 Auxiliary Heater Connection........................................................................................................20
5.7.3 Setting for Auxiliary Heater .........................................................................................................20
6. Refrigerant Piping Work.................................................................................................................................21

6.1 Piping Materials.....................................................................................................................................21
6.2 Piping Connection.................................................................................................................................22
7. Condensate Piping.........................................................................................................................................24
8. Electrical Wiring.............................................................................................................................................29
8.1 General Check......................................................................................................................................29
8.2 Electrical Wiring Capacity......................................................................................................................30
8.2.1 Field Minimum Wire Sizes for Power Supply...............................................................................30
8.2.2 Details of Electrical Wiring Connection........................................................................................30
8.3 Position of Electrical Wiring Connection................................................................................................32
8.4 Wiring Connection.................................................................................................................................35
8.5 Caution for Motion Sensor Kit (SOR-NEZ)............................................................................................37
8.6 DIP Switch Settings...............................................................................................................................38
8.7 External Static Pressure Setting............................................................................................................39
8.8 Function Selection by Wired Controller.................................................................................................40
8.9 Setback Operation.................................................................................................................................42
9. Test Run.........................................................................................................................................................43
9.1 Before Test Run.....................................................................................................................................43
9.2 Test Run................................................................................................................................................43
9.3 Alarm Code...........................................................................................................................................46
10. Fan Performance Curves...............................................................................................................................47
ii P5417013-rev.3
1. Introduction
Read following sections carefully before installing this product.
Read over the "Installation and Maintenance Manual" for the outdoor unit as well.
Forward this information and the warranty to all installers and users.
Ask end users to maintain copies for future reference.
(Refrigerant Piping Work) (Electrical Wiring Work) (Ref. Charge Work) (Test Run) (User)
● For details on wiring between the indoor unit and the outdoor unit, refer to the "Installation and Maintenance
Manual" for the outdoor unit.
● For details on the optional controller, refer to the "Installation and Maintenance Manual" for that optional
controller module.
● For details on each optional part, refer to the "Installation and Maintenance Manual" for each optional part.
● For central controller, refer to the "Installation and Maintenance Manual" for the central controller.
2. Safety Instructions
Signal Words
Indicates a hazardous situation that, if not avoided, could result in death
or serious injury.
Indicates a hazardous situation that, if not avoided, could result in minor or

moderate injury.
Indicates information considered important, but not hazard-related (for

example, messages relating to property damage).
General Precautions
To reduce the risk of serious injury or death, read these instructions
thoroughly and follow all warnings or cautions included in all manuals
that accompanied the product and are attached to the unit. Refer back to
these safety instructions as needed.
●● This system should be installed by personnel certified by Johnson Controls, Inc. Personnel must be
qualified according to local, state and national building and safety codes and regulations. Incorrect
installation could cause leaks, electric shock, fire or explosion. In areas where "Seismic Performance"
requirements are specified, the appropriate measures should be taken during installation to guard
against possible damage or injury that might occur in an earthquake if the unit is not installed
correctly, injuries may occur due to a falling unit.
●● Use appropriate Personal Protective Equipment (PPE), such as gloves and protective goggles and,
where appropriate, have a gas mask nearby. Also use electrical protection equipment and tools suited
for electrical operation purposes. Keep a heat shields, fire blankets, and a fire extinguisher nearby
during brazing. Use care in handling, rigging, and setting of bulky equipment.
●● When transporting, be careful when picking up, moving and mounting these units. Although the
unit may be packed using plastic straps, do not use them for transporting the unit from one location
to another. Do not stand on or put any material on the unit. Get a partner to help, and bend with
your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air
conditioner can cut fingers, so wear protective gloves.
P5417013-rev.3 1
●● Do not touch or adjust any safety devices inside the indoor or outdoor units. All safety features,
disengagement, and interlocks must be in place and functioning correctly before the equipment is put
into operation. If these devices are improperly adjusted or tampered with in any way, a serious accident
can occur. Never bypass or jump-out any safety device or switch.
●● Before servicing, turn-OFF the power supply and use accepted lockout and tag out procedures at all
main switches.
●● This unit is pressurized. Never loosen threaded joints while the system is under pressure and never
open pressurized system parts.
●● Johnson Controls will not assume any liability for injuries or damage caused by not following steps
outlined or described in this manual. Unauthorized modifications to Johnson Controls products are
prohibited as they…
◦◦ May create hazards which could result in death, serious injury or equipment damage;
◦◦ Will void product warranties;
◦◦ May invalidate product regulatory certifications;
◦◦ May violate OSHA standards;
Take the following precautions to reduce the risk of property damage.
●● Be careful that moisture, dust, or variant refrigerant compounds not enter the refrigerant cycle during
installation work. Foreign matter could damage internal components or cause blockages.
●● If air filters are required on this unit, do not operate the unit without the air filter set in place. If the air
filter is not installed, dust may accumulate and breakdown may result.
●● Do not install this unit in any place where silicon gases can coalesce. If the silicon gas molecules
attach themselves to the surface of the heat exchanger, the finned surfaces will repel water. As a
result, any amount of drainage moisture condensate can overflow from the condensate pan and could
run inside of the electrical box, possibly causing electrical failures.
●● When installing the unit in a hospital or other facility where electromagnetic waves are generated
from nearby medical and/or electronic devices, be prepared for noise and electronic interference
Electromagnetic Interference (EMI). Do not install where the waves can directly radiate into the
electrical box, controller cable, or controller. Inverters, appliances, high-frequency medical equipment,
and radio communications equipment may cause the unit to malfunction. The operation of the unit
may also adversely affect these same devices. Install the unit at least 10 ft. (3m) away from such
devices.
●● When a wireless controller is used, locate at a distance of at least 3.3 ft. (1m) between the indoor
unit and electric lighting. If not, the receiver part of the unit may have difficulty receiving operation
commands.
●● Do not install the unit in any location where animals and plants can come into direct contact with the
outlet air stream. Exposure could adversely affect the animals and plants.
●● Do not install the unit with any downward slope to the side of the drain adapter. If you do, you may
have condensate flowing back which may cause leaks.
●● Be sure the condensate hose discharges water properly. If connected incorrectly, it may cause leaks.
●● If the wired controller is installed in a location where electromagnetic radiation is generated, make
sure that the wired controller is shielded and cables are sleeved inside conduit tubing.
●● If there is a source of electrical interference near the power source, install noise suppression
equipment (filter).
●● Do not install the unit in any place where oil can seep onto the units, such as table or seating areas in
restaurants, and so forth. For these locations or social venues, use specialized units with oil-resistant
features built into them. In addition, use a specialized ceiling fan designed for restaurant use. These
specialized oil-resistant units can be ordered for such applications. However, in places where large
quantities of oil can splash onto the unit, such as a factory, even the specialized units cannot be used.
These products should not be installed in such locations.
2 P5417013-rev.3
Installation Precautions
To reduce the risk of serious injury or death, the following installation
precautions must be followed.
●● When installing the unit into…

▫▫ A wall: Make sure the wall is strong enough to hold the unit’s weight. It may be necessary to
construct a strong wood or metal frame to provide added support.
▫▫ A room: Properly insulate any refrigerant tubing run inside a room to prevent “sweating” that can
cause dripping and water damage to wall and floors.
▫▫ Damp or uneven areas: Use a raised concrete pad or concrete blocks to provide a solid, level
foundation for the unit to prevent water damage and abnormal vibration.
▫▫ An area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame.
Provide a suitable wind baffle.
▫▫ A snowy area: Install the outdoor unit on a raised platform that is higher than drifting snow. Provide
snow protection hood.
●● Do not install the unit in the following places. Doing so can result in an explosion, fire, deformation,
corrosion, or product failure.
▫▫ Explosive or flammable atmosphere
▫▫ Where a fire, oil, steam or powder can directly enter the unit, such as nearby or above a kitchen
stove.
▫▫ Where oil (including machinery oil) may be present.
▫▫ Where corrosive gases such as chlorine, bromine, or sulfide can accumulate, such as near a hot
tub or a hot spring.
▫▫ Where dense, salt-laden airflow is heavy, such as in coastal regions.
▫▫ Where the air quality is of high acidity.
▫▫ Where harmful gases can be generated from decomposition.
●● Do not install a motion sensor in the following places. It may cause failure or deterioration of the
sensor.
▫▫ Ambient temperature changes drastically.
▫▫ Where excessive force or vibration is applied to the sensor.
▫▫ Where static electricity or electromagnetic waves may generate.
▫▫ Where interference of infrared light such as gases or mist is in the detecting area.
▫▫ Where the lens for sensor is exposed in high temperature and humidity for a long time.
▫▫ Where fluid and corrosive gas exist.
▫▫ Where light such as sunlight or direct light affect the sensor.
▫▫ Where hot air from a heater or something similar directly affects the sensor.
▫▫ Where weather directly affects the surface of the sensor.
▫▫ Where the lens surface may smudge or be damaged from something like a dusty environment.
Detecting function will decrease if the lens of the sensor has smudges.
In this case, wipe off smudges using a cotton swab soaked with alcohol or a soft cloth. Isopropyl
alcohol is recommended. (When wiping off smudges on the lens sensor, do not apply excessive
force. If excessive force is applied, the resin lens may be damaged and this may cause
malfunctions such as misdetection or undetectable motion.)
●● Do not position the condensate pipe for the indoor unit near any sanitary sewers where corrosive
gases may be present. If you do, toxic gases can seep into breathable air spaces and can cause
respiratory injuries. If the condensate pipe is installed incorrectly, water leakage and damage to the
ceiling, floor, furniture, or other possessions may result. If the condensate pipe becomes clogged,
water may drip from the indoor unit. Do not install the indoor unit where such dripping can cause
moisture damage. Use a raised concrete pad or concrete blocks to provide a solid, level foundation
for the unit to prevent water damage and abnormal vibration.
●● Before performing any brazing work, be sure that there are no flammable materials or open flames
nearby.
●● Perform a test run to ensure normal operation. Safety guards, shields, barriers, covers, and protective
devices must be in place while the compressor/unit is operating. During the test run, keep fingers and
clothing away from any moving parts.
●● Clean up the site when finished, remembering to check that no metal scraps or bits of wiring have
been left inside the unit being installed.
P5417013-rev.3 3
After installation work for the system has been completed, explain the “Safety Precautions,” the proper use
and maintenance of this unit to the customer according to the information in all manuals that came with the
system. All manuals and warranty information must be given to the user or left near the Indoor Unit.
Refrigerant Precautions
To reduce the risk of serious injury or death, the following refrigerant

precautions must be followed.
●● As originally manufactured, this unit contains refrigerant installed by Johnson Controls. Johnson
Controls uses only refrigerants that have been approved for use in the unit’s intended home country
or market. Johnson Controls distributors similarly are only authorized to provide refrigerants that
have been approved for use in the countries or markets they serve. The refrigerant used in this unit
is identified on the unit’s faceplate and/or in the associated manuals. Any additions of refrigerant into
this unit must comply with the country’s requirements with regard to refrigerant use and should be
obtained from Johnson Controls distributors. Use of any non-approved refrigerant substitutes will void
the warranty and will increase the potential risk of injury or death.
●● If installed in a small room, take measures to prevent the refrigerant from exceeding the maximum
allowable concentration in the event that refrigerant gases should escape. The installation should
meet the requirements in ASHRAE Standards 15 and 34. If refrigerant gas has leaked during the
installation work, ventilate the room immediately.
●● Check the design pressure for this product is 601 psi (4.15Pa). The pressure of the refrigerant R410A
is 1.4times higher than that of the refrigerant R22. Therefore, the refrigerant piping for R410A shall be
thicker than that for R22. Make sure to use the specified refrigerant piping. If not, the refrigerant piping
may rupture due to excessive refrigerant pressure. Pay attention to the piping thickness when using
copper refrigerant piping. The thickness of copper refrigerant piping differs depending on its material.
●● The refrigerant R410A is adopted. The refrigerant oil tends to be affected by foreign matters such
as moisture, oxide film, (or fat). Perform the installation work with care to prevent moisture, dust or
different refrigerant from entering the refrigerant cycle. Foreign matter introduced into the cycle may
damage the expansion valve and may cause equipment damage or failure.
●● To avoid the possibility of different refrigerant or refrigerant oil being introduced into the cycle, the
sizes of the charging connections have been changed from R407C type and R22 type. It is necessary
to prepare the following tools listed in Section 3 before performing the installation work. Use
refrigerant pipes and joints which are approved for use with R410A.
●● Before installation is complete, make sure that the refrigerant leak test has been performed. If
refrigerant gases escape into the air, turn OFF the main switch, extinguish any open flames and
contact your service contractor. Refrigerant (Fluorocarbon) for this unit is odorless. If the refrigerant
should leak and come into contact with open flames, toxic gas could be generated. Also, because the
fluorocarbons are heavier than air, they settle to the floor, which could cause asphyxiation.
●● When installing the unit, and connecting refrigerant piping, keep all piping runs as short as possible,
and make sure to securely connect the refrigerant piping before the compressor starts operating. If
the refrigerant piping is not connected and the compressor activates with the stop valve opened, air is
sucked in and the refrigerant cycle will become subjected to extremely high pressure, which can cause
an explosion or fire.
●● Tighten the flare nut with a torque wrench in the specified manner. Do not apply excessive force to the
flare nut when tightening. If you do, the flare nut can crack and refrigerant leakage may occur.
●● A compressor/unit comprises a pressurized system. Never loosen threaded joints while the system is
under pressure and never open pressurized system parts.
●● When maintaining, relocating, and disposing of the unit, dismantle the refrigerant piping after the
compressor stops.
4 P5417013-rev.3
Electrical Precautions
Take the following precautions to reduce the risk of electric shock, fire or
explosion resulting in serious injury or death.
●● Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and
these instructions when wiring. Improper connections and inadequate grounding can cause serious
injury or death.
●● Perform all electrical work in strict accordance with installation and maintenance manual and all
relevant regulatory standards.
●● Do not open the service cover or access panel to indoor or outdoor units without turning OFF the
main power supply. Before servicing, open and tag all disconnect switches. Never assume electrical
power is disconnected. Check with a meter and equipment.
●● Only use electrical protection equipment and tools suited for this installation.
●● Use specified cables between units.
●● Do not run the connector cable for the motion sensor and power supply wiring in parallel.
Electromagnetic Interference (EMI) may cause malfunction of the sensor.
●● Communication cable shall be a minimum of AWG18 (0.82mm2), 2-Conductor, Stranded Copper.
Shielded cable must be considered for applications and routing in areas of high EMI and other
sources of potentially excessive electrical noise to reduce the potential for communication errors.
When shielded cable is applied, proper bonding and termination of the cable shield is required as per
Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered
per application and local code requirements.
●● Use an exclusive power supply for the air conditioner at the unit’s rated voltage.
●● Be sure to install circuit breakers (ground fault interrupter, isolating switch, molded case circuit
breaker and so on), with the specified capacity. Ensure that the wiring terminals are tightened
securely to recommended torque specifications. If a circuit breaker is tripped or fuse is blown, shut
down the system and contact your service contractor.
●● The polarity of the input terminal is important, so be sure to match the polarity when using contacts
that have polarity.
●● Before installing the controller or remote devices, ensure the indoor and outdoor unit has stopped.
Further, be sure to wait at least five minutes before turning OFF the main power switch to the indoor
or outdoor units. Otherwise, water leakage or electrical breakdown may result.
●● Clamp electrical wires securely with a cable band after all wiring is connected to the terminal block. In
addition, run wires securely through the wiring access channel.
●● When installing the power lines, do not apply tension to the cables. Secure the suspended cables at
regular intervals, but not too tightly.
●● Make sure that the terminals do not come into contact with the surface of the electrical box. If the
terminals are too close to the surface, it may lead to failures at the terminal connection.
●● Turn OFF and disconnect the unit from the power supply when handling the service connector. Do not
open the service cover or access panel to the indoor or outdoor units without turning OFF the main
power supply.
●● Disconnect the power supply completely before attempting any maintenance for electrical parts.
Check to ensure that no residual voltage is present after disconnecting the power supply.
●● Do not clean with, or pour water into, the controller as it could cause electric shock and/or damage the
unit. Do not use strong detergent such as a solvent. Clean with a soft cloth.
●● Check that the ground wiring is securely connected. Do not connect ground wiring to gas piping,
water piping, lightning conductor, or telephone ground wiring.
●● This equipment can be installed with a Ground Fault Circuit Breaker (GFCI), which is a recognized
measure for added protection to a properly grounded unit. Install appropriately-sized breakers / fuses
/ overcurrent protection switches and wiring in accordance with local, state and NEC codes and
requirements. The equipment installer is responsible for understanding and abiding by applicable
codes and requirements.
P5417013-rev.3 5
Proper handling of this unit requires two-people. Safe handling and installing the indoor unit requires the
strength of two people. Mounting the unit alone may cause injury due to fall of the unit. Although the unit
may be girded with steel banding, do not use it for transportation. Avoid contact with finned surfaces of
the heat exchanger as sharp edges can cause severe injury to hands and fingers. Use appropriate work
gloves for the job.
NOTICE
● Check to ensure that the condensate hose discharges moisture properly. If connected incorrectly, it can
result in leakage and damage to furniture.
●● Make sure to use the factory-supplied condensate hose and hose clamp. Other makes can cause
moisture leakage.
●● Do not bend or twist the factory-supplied condensate hose. This could compromise the seal and result in
moisture leakage.
● Do not apply an excessive force to the condensate pipe connection. This can also compromise the seal
properties of the connection.
●● Verify that the installed unit is level with floor and ceiling surfaces. Any variance or inclination can cause
moisture to back up into the condensate pan, overflow, and leak onto ceiling or wall surfaces, causing
damage to carpeted surfaces or furniture below.
● Do not install this system in close proximity to septic sewer lines where flammable and toxic gases can
accumulate.
●● Inspect the condensate pan before the onset of winter to drain away all accumulated moisture in the pan.
● The heat exchanger of indoor unit produces heat whenever there is a slight amount of refrigerant
circulating during slowdown or stoppage. As a result, any moisture in the condensate pan evaporates
where it can condense on ceiling or wall surfaces.
● After the drain check is completed, insert the rubber plug again and seal the gap with a silicon sealant.
Electrical Installation
In some cases, the packaged air conditioner may not be operated normally under the following cases:
●● When electrical power for the packaged air conditioner is supplied from the same power transformer
as the external equipment.
●● When the power supply wiring for the external equipment and the packaged air conditioner are
located close to each other.
Regarding that mentioned above, surge voltage may be inducted into the power supply wiring for the crated
air conditioner due to a spike in power consumption for this device and an activation of the switch. Check
the field regulations and standards before performing any electrical work in order to safeguard the power
supply for the crated air conditioner unit.
6 P5417013-rev.3
3. Before Installation
3.1 Combination of Outdoor Unit and Indoor Unit
The combination capacity of indoor unit against the outdoor unit is selected depending on the outdoor unit
capacity. Refer to the "Installation and Maintenance Manual" for the outdoor unit to decide the required
combination of indoor and outdoor units, and the combination unit capacity.
3.2 Transportation and Handling

• Transport the product as close to the installation location as possible before unpacking.
• Do not lay any objects on the indoor unit.
• The indoor unit comes crated upside-down with the foam polystyrene condensate pan positioned on top.
Do not invert the unit until it is ready to be suspended above the floor. Inverting the unit while on the floor
will crush the condensate pan. Do not handle the unit by grabbing at the polystyrene pan and other air
outlets as they are fragile and will sustain damage.
• The indoor unit handle is fabricated from foam polystyrene and is susceptible to breakage if any
excessive force is applied as a result of mishandling of the unit during installation.
3.3 Factory-Supplied Accessories

Check to ensure that the following accessories are packed with the indoor unit.
The screws, washers, and flare nuts are packed in the pipe insulation.
Accessory Qty. Purpose

Washer with
Insulation Material 4
(M10)
For Unit Installation
Washer (M10)
4
Truss Head Screw

(M4) 18 For Securing Flange
Condensate Hose
1 For Condensate Piping Connection
Hose Clamp
1 For Condensate Hose Connection
Insulation
3/16T x 10-5/8 x 10-5/8 1 For Insulating Condensate Piping
(5T x 270 x 270)
Pipe Insulation
1
For Insulating Refrigerant Piping
Pipe Insulation
1
Cable Band
6 For Securing Refrigerant Piping Insulation
Cable Band
2 For Securing Wired Controller Cable
Insulation
3/16T x 1-15/16 x 7-7/8 1 For Covering Wiring Connection
(5T x 50 x 200)
PVC Tube
7/16ID (11ID) 2
For Separating Communication Cables and
Cable Band Wired Controller Cables from Power Supply Wiring
5
P5417013-rev.3 7
NOTICE
● The controller and branch piping are optional accessories which are not included with the indoor unit.
If necessary, please contact your distributor or contractor.
● Styrene foam is attached to the base of fan motor as a cushion material during transport.
Make sure to remove it before installation. (It can be removed by grabbing hand from the air inlet side.)
Fan Motor
Air Inlet Side
Styrene Foam
3.4 Necessary Tools and Instrument List for Installation
No. Tool No. Tool NOTE:

1 Handsaw 11 Wrench Use tools and measuring
2 Phillips Screwdriver 12 Charging Cylinder instruments (vacuum pump, gas
hose, charging cylinder, manifold
3 Vacuum Pump 13 Manifold Gauge
gauge) exclusively for refrigerant
4 Refrigerant Gas Hose 14 Wire Cutter
R410A.
5 Megohmmeter 15 Gas Leak Detector
6 Copper Pipe Bender 16 Level
7 Manual Water Pump 17 Clamps for Solderless Terminals
8 Copper Tube Cutter 18 Hoist (for Indoor Unit)
9 Brazing Kit 19 Ammeter
10 Hexagonal Wrench 20 Voltage Meter
4. Installation Location
●● Make sure to use the factory-supplied condensate hose and hose clamp. Other makes can cause
moisture leakage.
●● Do not install the unit where flammable gas may exists. Doing so can result in fire.
●● The refrigerant used in this unit normally does not leak. If the refrigerant should leak and come
into contact with open flames, toxic gas could be generated. Also, because the fluorocarbons are
heavier than air, they settle to the floor, which could cause asphyxiation.
(1) Check that the ceiling is strong enough to install the indoor unit. If not, it may cause noise and vibration.
(2) Install the indoor unit with sufficient space around it for operation and maintenance access as shown in
Figure 4.1. Install the indoor unit with respect to the space allowing for refrigerant piping, condensate
piping and maintenance. Do not leave combustible materials in the service spaces of the indoor unit. Be
sure to prepare the access door.
(3) Check if there is sufficient space for condensate piping slope for drainage. Consider the location where
the condensate piping gradient can be 1/25 to 1/100. Install the indoor unit at least 8.2ft (2.5m) above
the floor.
(4) In the event that temperature and humidity levels inside the ceiling exceed 86˚F (30˚C)/RH, relative
humidity 80%, apply additional insulation materials to the external surface of the indoor unit to avoid
condensation.
8 P5417013-rev.3
Service Space
NOTICE:
In case of installing optional filter box, please refer to the dimensional drawing for the service space.
Prepare one of the following access door(s) under the indoor unit. "Access Door 1 + Access Door 2" or
"Access Door 3".
Unit: inch (mm)
Service Access Door 2
Air Outlet Service Access Door 1

Max. 7-7/8 Min. □17-11/16 (450) Min. 13/16 (20)
(200) Air Outlet Service Access Door 3
Air Outlet
Ceiling
Dimension)
Dimension)
(Unit
(Unit
Electrical Box
Service Access Door
(Unit Dimension)
(Unit Electrical Box Electrical Box
+11-13/16 (300)
Dimension)
View from Bottom View from Bottom Side View

(Access Door 1 + 2) (Access Door 3)
In case that the ceiling board Figure 4.1 Service Space

can not be detached for
servicing, prepare a service access
door below the indoor unit for
removal of the indoor unit.
(5) When installing the indoor unit to intake the air from the bottom side, more than 11-13/16 inches (300mm)
space is required under the indoor unit.
(6) Check if the installation place is stable for refrigerant piping and electrical wiring connection.
(7) Do not install the indoor unit near a kitchen or anyplace where humidity is high. Condensation may
occur during cooling operation. In this case attach additional insulation or other measures.
(8) Do not install the indoor unit to the atmosphere where filled with organic solvent (paint thinner or
benzene) as such as painting factory or dry cleaning factory. Synthetic resin components may be
dissolved.
(9) Do not install the indoor unit in a place where flammable gas may be generated and be retained.
(10) To avoid vibration transmission from duct to the ceiling, be sure to attach canvas duct for the duct
connection.
(11) To avoid any corrosive action to the heat exchangers, do not install the indoor unit in an acid or alkaline
environment.
(12) The unit is not equipped with an air filter. Be sure to attach air filter (field-supplied) to the air inlet inside
at the time of duct installation work.
(13) Attach additional insulation to the outer surface or install secondary condensate pan to the bottom of the
unit if installing the unit in an area with high humidity.
(14) Do not install the indoor unit where airflow from the air outlet grille blows directly onto temperature
detection devices such as an alarm device or a control device. It can result in false readings and an
alarm failure.
(15) Ensure to follow the dimensions are as shown in Figure 4.2 when installing the indoor unit for safety
reasons. Material for duct shall be in non-combustible as well.
D
C
Unit: inch (cm)

Material of the Wall, Frame
Flammable Non-flammable
Indoor Unit
ᮏయ C Min. 39-3/8 (100) Min. 3-15/16 (10)
D Min. 23-5/8 (60) Min. 1-15/16 (5)
Figure 4.2 Recommended Installation Space
P5417013-rev.3 9
(16) Pay attention to the following points when the indoor unit is installed in a hospital or other facilities
where there are electronic waves from medical equipment.
(a) Do not install the indoor unit where the electromagnetic wave is directly radiated to the electrical
box, communication cable or wired controller.
(b) Install the indoor unit and components as far away as practical or at least 10ft (3m) from any
electromagnetic wave radiator.
(c) Prepare a steel box and install the wired controller in it. Prepare a steel conduit tube and wire the
controller cable in it. Then, connect the ground wiring with the box and the tube.
(d) Install a noise filter if the power supply is too noisy.
(17) The detecting area for the motion sensor kit (option) is shown in the figure below.
Unit: ft (m)
Ceiling Height
10.2 (3.1)
2.6 (0.8)
(From Floor Surface)
Diameter 27.9 (8.5)
Figure 4.3 Detecting Area for Motion Sensor
Install the indoor unit in a compartment handling air for circulation through a duct supplying only one
room.
10 P5417013-rev.3
5. Installation Work
5.1 Location of Suspension Bolts
(1) Determine the final location and installation orientation of the indoor unit with respect to the space
allowed for piping, wiring, and maintenance access.
(2) Then cut away the false ceiling area for the indoor unit installation and install suspension bolts. The
dimensions for location of suspension bolts are shown in Figure 5.1.
(3) Ceiling work differs depending on the building structure. Consult with a building engineer or an interior
finish contractor for more information.
NOTICE:
● Reinforce rib, ceiling joist and ceiling batten of the lower surface of the ceiling to keep the ceiling flat and
prevent ceiling panel vibration. Add semi-seismic rubber, if strength of the suspension rib to the upper
surface of the ceiling is insufficient.
● Cut and remove the lower surface of the ceiling to access air inlet grille, air outlet grille and for
maintenance.
● Reinforce the edge of the cut ceiling and add brackets to the edge of the ceiling panel.
● Do not install electric lighting in too close proximity to the unit as unit operation can cause the lights to
flicker.
Unit: inch (mm)

B: For Suspension Bolt
2-3/8 (60) A: Unit Width

1-3/16 (30)
13/16 (20)
Air Inlet Side 4-Holes 1-9/16 (40) x 1/2 (12)

(For Suspension Bolt)
13/16 (20)
(For Suspension Bolt)
29-13/16 (758)
31-1/2(800)
7/8 (22)
1-3/16 (30)
13/16 (20)
Air Outlet Side
Dimension
Model A B
High Static Type Medium Static Type
(H,Y,C)IDM006B22S
(H,Y,C)IDM008B22S 27-9/16 30-11/16
(H,Y,C)IDH015B22S
(H,Y,C)IDM012B22S (700) (780)
(H,Y,C)IDM015B22S
(H,Y,C)IDH018B22S (H,Y,C)IDM018B22S
41-5/16 44-1/2
(1,050) (1,130)
(H,Y,C)IDH036B22S (H,Y,C)IDM036B22S 55-1/8 58-1/4
(H,Y,C)IDH048B22S (H,Y,C)IDM048B22S (1,400) (1,480)
Figure 5.1 Suspension Bolts
P5417013-rev.3 11
5.2 Installing Suspension Bolts
(1) Reinforce the designated opening in the false ceiling area. Use approved materials of sufficient tensile
strength to allow for quality installation.
(2) Strengthen suspension bolts with support plates as required in earthquake areas. Use field-supplied
M10 suspension bolts and support plates.
NOTICE:
Install the indoor unit to the tie beam (for single-storied building) or to the second floor girder (for two-
storied building), and use sufficiently strong squared timber as shown in Figure 5.2.
Unit: inch (mm)

For Concrete Slab For Steel Beam
5-7/8 to 6-5/16
(150 to 160) Insert
(221 to 331 lbs
(100 to 150 kg))
Concrete
Steel
Suspension Bolt I Beam
(W3/8 or M10)
Suspension Bolt
(W3/8 or M10)
For Wooden Beam Suspension

Wooden Bar
(2-3/8 to 3-9/16 (60 to 90)
Square)
Nut Square Washer
Square Washer
Nut
Suspension Bolt
Wooden Beam
Figure. 5.2 Mounting of Suspension Bolts
5.3 Intaking Air from Bottom Side
Suction Flange
Replace*
Bottom Cover
* If the unit is intaking air from the bottom side, replace the suction flange and
the bottom cover.
Figure 5.3 Intaking Air from Bottom Side
12 P5417013-rev.3
5.4 Working Procedure
● Air filter is not installed in the unit. Be sure to install air filter. Otherwise, it may cause heat exchanger
clog and condensate leakage.
(1) Mounting Nuts and Washers

Place nuts and washers onto the suspension bolts before installing the indoor unit.
NOTICE:
* Make sure to use washers (accessories) for installing the suspension bolts to the suspension
brackets.
Install the washer with the insulation side facing down for suspended installation applications. This
way, the washers themselves remain in position on the suspension bolts during the installation phase.
Suspension Bolt (Field-Supplied) Unit: inch (mm)
Nut (Field-Supplied)
* Washer with Insulation (Accessory)
Suspension Bracket (Attached Indoor Unit)
* Washer (Accessory)
1-15/16 (50)
Nut (Field-Supplied)
Approx.
Figure 5.4 Suspension Bolts and Nuts
(2) Mounting the Indoor Unit

● Suspend the unit by placing your hands below the suspension brackets on each corner of the unit.
● Insert the suspension bolts into the notches of the suspension brackets to capture the unit. Secure the
unit using nuts and washers. Then check that the washers serve as stoppers at the rising parts of the
suspension brackets.
NOTICE:
After securing the unit, piping and electric power needs to be installed inside the ceiling area adjacent
to the unit. If a false ceiling is already in place, determine the proper pathway for piping and electrical
lines before the unit is installed. While adjusting the clearance spacing between the indoor unit and the
ceiling surface, keep the indoor unit level. Otherwise, it may cause a malfunction of the float switch.
Also, a unit that is not level will not drain or pump correctly. (Refer to the Figure below for checking the
vertical alignment.)
Suspension Bolt
Suspension Bracket
Figure 5.5 Suspended Indoor Unit

NOTICE:
The duct flanges on the air outlet side and air inlet side of the unit are temporary attached at the time of
shipping. If the optional filter box will not be installed, secure them firmly with the screws (accessory).
P5417013-rev.3 13
● Connecting position of the indoor unit and piping are as shown in the figure below.
Unit: inch (mm)
Refrigerant Liquid Pipe
(φa Pipe with Flare Nut) Condensate Piping (VP25)
Condensate Plug
Refrigerant Gas Pipe
㸦φb Pipe with Flare Nut)
Air Outlet (Front Side)
Air Outlet
7-3/4 (197)
5-7/8 (150)
1-9/16 (40)
7-1/16 (180)
2-1/2 (63) (Refrigerant Gas Pipe)
2-9/16 (65) (Condensate Piping)
2-5/8 (67) (Refrigerant Liquid Pipe)
11-3/4 (299) (Condensate Pipe)
13-3/4 (350) (Condensate Plug)
Dimension
a b
Model
1/4 1/2
(H,Y,C)IDH015B22S
(6.35) (12.7)
(H,Y,C)IDH018B22S
High Static (H,Y,C)IDH024B22S
Type (H,Y,C)IDH027B22S
3/8 5/8
(H,Y,C)IDH030B22S
(9.53) (15.88)
(H,Y,C)IDH036B22S
(H,Y,C)IDH048B22S
(H,Y,C)IDH054B22S
(H,Y,C)IDM006B22S
(H,Y,C)IDM008B22S 1/4 1/2
(H,Y,C)IDM012B22S (6.35) (12.7)
(H,Y,C)IDM015B22S
Medium Static (H,Y,C)IDM018B22S
Type (H,Y,C)IDM024B22S
(H,Y,C)IDM027B22S
3/8 5/8
(H,Y,C)IDM030B22S
(9.53) (15.88)
(H,Y,C)IDM036B22S
(H,Y,C)IDM048B22S
(H,Y,C)IDM054B22S
Figure 5.6 Position of Piping Connection
(3) Tighten the nuts on the suspension brackets after adjustments are completed. Apply LockTite thread
lock compound to the suspension bolts and nuts in order to prevent them from loosening.
NOTICE:
While adjusting the clearance spacing between the indoor unit and the ceiling surface, keep the indoor
unit level. Otherwise, it may cause a malfunction of the float switch. Check the vertical alignment of the
unit with a level.
The unit should be installed so the

condensate piping side of the unit is
pitched slightly (1/8 to 3/16 inch (3 to
5mm))lower than the other side.
Condensate Pipe
Check the vertical alignment at each
Level corner (•) of the unit by pouring water
to the clear vinyl tube as shown in
the figure.
Vinyl Tube
Figure 5.7 Checking Vertical Alignment
14 P5417013-rev.3
(4) Connecting Return Duct and Supply Duct
● Air filter is not attached to the indoor unit. Attach the air filter which is easy to clean to the air inlet grille.
● Supply duct should be connected with the indoor unit through canvas duct in order to minimize
abnormal sound vibration transmitted to the ceiling and slab.
● Attach the vibration proof rubber piece or vibration proof hanger to suspension bolt in order to minimize
abnormal sound vibration transmitted to the ceiling and slab.
● Operating frequency of each indoor unit is shown in Figure 5.8.
● To avoid drift of the air inlet side air velocity distribution, install the unit to have uniform air velocity
distribution by connecting circular duct to the inlet side chamber.
● Be sure to prepare access door on the ceiling for electric box or motor maintenance.
● Duct material should be a non-flammable material type.
● Add additional insulation to sheet metal ducting when the humidity is high inside the ceiling.
Silencer Canvas Duct Canvas Duct Silencer
Thermal
Insulation
Indoor Unit
Damper for
Adjusting Air Volume
(for Minor Adjustment)
Air Outlet Air Inlet
(with Air Filter)
Keep Horizontal Access Door
Unit: Hz
Operating Frequency
MBH
06 - 15 9 -29 9 - 28
18 - 27 8 - 28 10 - 27
30 - 54 8 - 28 10 - 28
Figure 5.8 Duct Connection Example
P5417013-rev.3 15
● If a lower sound level is further required, install the additional field-supplied silencer.
● Design duct arrangement as "Unit External Static Pressure = Pressure Drop of Duct + Pressure
Drop of Air Outlet and Air Inlet".
Poorly designed duct will result in sound, comfort and water blow-off issues.
Notice for Outdoor Air Intake (Fresh Air)

This air conditioner unit is NOT designed for outdoor use.
The following items are to be strictly observed when designing a system for fresh air intake from the
outdoors.
1) Considering Ventilation Load

Calculate the air-conditioning load properly with the load of the outdoor air intake. If the load of the outdoor
air is not considered, it may cause insufficient cooling or heating operation due to an excessive air-
conditioning load against the unit capacity.
2) Limits on Outdoor Air Intake
• Do NOT apply air from the outdoors directly into the indoor unit.
If an outdoor fresh air intake is necessary for air-conditioning, Johnson Controls Inc. recommends the
installation of the ERV (Energy Recovery Ventilation) (Field-supplied) system.
The outdoor air shall be processed by the ERV and mixed with indoor air.
Only then, can the outside air be introduced into the indoor unit.
NOTICE:
The temperature of the air that is intermixed should fall within the working range as shown below.
Heating Cooling
69 F DB/59 F WB (21oC DB/15oC WB)
o o
Working Range of Required 59 to 80oF DB
to
Indoor Room Temperature (15 to 27oC DB)
89oF DB/73oF WB (32oC DB/23oC WB)
• If the ERV is not used for processing the outdoor air, it can result in insufficient heating/cooling operation
or condensation build-up on the inside surfaces of the indoor unit or duct depending on the outdoor air
conditions.
• The volume of fresh air is recommended to be within 20% of the airflow volume “Hi2” according to the
specification’s table in the technical documentation. If it exceeds 20%, additional condensation may
build-up on the inside surfaces of the indoor unit and the airflow volume of the indoor unit cannot be
adjusted due to increasing pressure loss of air intake caused by insufficient internal static pressure.
• When outdoor air is introduced into the indoor unit, make sure to install an air filter capable of keeping
the indoor unit free from dust.
3) Facilities for Outdoor Air Intake

• Use a damper or the duct fan at the outside air ductwork to adjust fresh air volume.
• Do NOT ingest in fresh air from the outdoors directly into the indoor unit.
Installing and integrating an ERV as a part of the system is recommended if incoming air from outdoors
is routinely drawn indoors.
• When using an ERV or installing a duct fan, make sure to install the interlock circuit between them and
the indoor unit. Make sure to install an ERV in accordance with this manual.
• Install thermal insulation on surfaces of interconnecting ducts to prevent the build-up of condensation.
16 P5417013-rev.3
● Select the appropriate silencer according to the operation sound to the room installing the unit.
● If a lower sound level is further required, install additional field-supplied silencer.
● The facility design should be “Unit External Static Pressure = Duct Pressure Loss + Suction /
Discharge Pressure Loss”.
If duct pressure loss falls below the external static pressure, airspeed will increase and noise
levels along with it. Also, water may splash out from unit and the motor protection circuit will
activate. Problems such as the inability to adjust airspeed can occur if the external unit static
pressure falls below the duct pressure loss. Adjust the airflow control damper or shift the static
pressure control switch to an equal level between the external static pressure and duct pressure
loss (Refer to “Setting the External Pressure” section for the details).
● Basically, this unit is configured to install the ducts on the inlet side and the outlet side. Ask for
more information on using return ducts in the ceiling.
Unit: inch (mm)

Silencer Canvas Duct Canvas Duct Silencer
Thermal Damper for

Insulation Adjusting Air Volume
Indoor
Unit Outdoor Air
(with Air Filter)
Damper for Fine An air filter which

Adjusting Air Volume
Air Inlet can collect dust.
(with Air Filter) ERV
Air Outlet
Horizontal Service Access Panel (Energy Recovery Ventilation)
17-11/16 x 17-11/16 (450 x 450)
Figure 5.9 Duct Connection Example
5.5 Installation of Optional Parts or Field-Supplied Parts

(1) Refer to the manual for each parts for the installation of air intake panel, canvas duct, air outlet duct,
flexible duct, motion sensor.
NOTICE:
1. Install flexible duct to all air outlets without bending so that airflow is not restricted. Restricting air
outlets or bent flexible duct may cause operational failure or stoppage, sweating and dripping.
2. Perform the insulation work (non-combustible material, more than 13/16 inch (20mm) thickness) after
completely attaching the flexible duct connection without gap. This will prevent air leakage, sweating
and dripping.
After the pipe is connected, pour some water into the pan to check pump or drain operation. Once
pump or drain are confirmed to be working, the plenum or ductwork can be connected. At least one
air outlet shall be open until the condensate piping is completed.
(2) Unit external static pressure can be adjusted on this unit to compensate for ductwork. Refer to "External
Static Pressure Setting" section for more details.
5.6 Wired Controller Settings

Refer to the installation manual for the wired controller for the installation.
P5417013-rev.3 17
5.7 Installation of Auxiliary Heater (Field-Supplied)
●● When the auxiliary heater shall be installed and connected, make selection by following local
codes, regulations and approved by UL1996, and refer to this manual. Improper installation may
result in fire from overheating.
●● When the auxiliary heater shall be installed and connected, do not install in places where heater
can come into contact with combustible materials. Otherwise, fire may result.
●● Provide adequate clearance spacing between the auxiliary heater and indoor unit.
Refer to the auxiliary heater manual for details.
Otherwise, fire may result from over heating the indoor unit.
●● Do not attach the auxiliary heater directly to the indoor unit.
Otherwise, fire may result from combustible materials inside the indoor unit.
●● Route the auxiliary heater wiring so that it can not come into contact with any part of the heater.
Otherwise, fire may result.
●● When the auxiliary heater shall be installed and connected, duct material should be a sheet metal
or non-flammable material. Otherwise, fire may result.
●● Fire may result from debris and dust inside the duct. Indoor unit must be cleaned on a regular
basis by following the Service Manual. Also auxiliary heater and duct must be cleaned on a regular
basis by following their manuals.
●● Auxiliary heater must be properly selected so that double overheating safety protection devices
(Thermal Protector and Thermal Fuse) are built-in. Otherwise, fire may result from over heating of
heater when the components such as relays fails.
5.7.1 Selection of Auxiliary Heater
Auxiliary heater for connection can only be duct heater type.
When using the auxiliary heater, auxiliary heater capacity must be properly selected. Otherwise, fire may
result from abnormal heating of heater. Select the allowable auxiliary heater capacity by following the
procedure below.
(1) Confirmation of Actual Airflow Volume

Indoor unit is restricted to the following fan speeds during the auxiliary heater ON and does not
correspond to the wired controller setting.
Wired Controller Setting Fan Speed

Low High
Medium High
High High
High2 High2
Confirm the actual airflow volume of the switched fan speed from the fan performance curves
in Section 10.
Be sure to design the duct arrangement so that the actual airflow volume does not exceed
the upper limit.
If the actual airflow volume exceeds the upper limit, unwanted noise may occur.
18 P5417013-rev.3
(2) Auxiliary Heater Capacity Selection
Select auxiliary heater capacity with minimum airflow volume requirement smaller than actual airflow
volume of indoor unit confirmed in step (1). When the minimum airflow volume requirement for the
auxiliary heater is greater than actual airflow volume of indoor unit confirmed in step (1) then failure of
indoor unit or fire may result from over heating of heater.
Be sure to confirm the minimum airflow volume requirement for the auxiliary heater from the heater
manufacturer.
Maximum allowable heater capacity is different depending on indoor unit model. See table below.
Model Auxiliary Heater

Maximum Capacity
(kW)
(H,Y,C)IDM006B22S 3.8
(H,Y,C)IDM008B22S 4.5
(H,Y,C)IDM012B22S 6.8
(H,Y,C)IDH015B22S (H,Y,C)IDM015B22S 8.0
If cold draft is a problem then select a larger heater capacity within the allowable capacity range.
If cold draft during defrost is a problem then change the optional function L9 to "01" to turn off both
heater and fan operation during defrost.
NOTICE
Depending on the Function Setting the heater and fan is turned off for approximately three minutes at
defrost recovery.
P5417013-rev.3 19
5.7.2 Auxiliary Heater Connection
When the auxiliary heater shall be used, wire the circuit as shown below.
Example of Electrical Wiring
Relay and 3 Pin Connector Kit Connector Cable Indoor Unit

(PSC-5RA) (PCC-6A)
1 1 PCB1
CN7 2 2
TB2 1 1 3 3
2 2 4 4
7 3 3 5 5
X1
X1 6 6
8 7 7 CN17
9 X2 PCB1: Pins 3 and 4 of CN17

X2
Unit Side (Responsible) Wired Controller
Field Installation Side (Out of Responsibility)
Automatic
Thermal Electric
Cutout Xa Fuse Heater
(1 fuse in case of single power supply and

Xa 2 fuses for three phase power supply)
Power Supply
for Relay (DC24V)
Power Supply for

Auxiliary Heater
When PSC-5RA (optional part, required) is used for connection between the auxiliary heater and indoor unit
DO NOT connect connector (CN7) to indoor unit PCB. Otherwise, fire may result. Use connector cable
(optional part, required)) between the connector (CN7) of PSC-5RA and indoor unit PCB connector (CN17).
Connector (CN3) can be used for input integration functionality. Use another PSC-5RA for output integration
functionality.
5.7.3 Setting for Auxiliary Heater
Auxiliary heater setting is disabled by default.

Refer to "Function Selection by Wired Controller" section for details.
20 P5417013-rev.3
6. Refrigerant Piping Work
Use the specified non-flammable refrigerant (HFC R410A) for the outdoor unit refrigerant cycle. Do
not charge the unit with anything other than HFC R410A, such as hydrocarbon refrigerants (propane
and Isobutene), oxygen, and other flammable gases (acetylene, ammonia, and so forth), or any
poisonous gases when installing, maintaining and moving the unit. These substances are volatile
and dangerous and can result in fire, explosion, and serious or fatal injuries.
For details on refrigerant piping work, vacuum pump, and refrigerant charge, refer to the "Installation and
Maintenance Manual" for the outdoor unit. Also, refer to the nameplate and caution plate attached on the
outdoor unit for the refrigerant charge varieties.
6.1 Piping Materials

(1) Tolerances for refrigerant piping lengths depend on the combination with the outdoor unit. Refer to the
“Installation and Maintenance Manual” for the outdoor unit for details.
(2) Select the piping size from the following table.
Table 6.1 Piping Size

inch (mm)
Model Gas Piping Liquid Piping
(H,Y,C)IDM006B22S
(H,Y,C)IDM008B22S
1/2 (12.7) 1/4 (6.35)
(H,Y,C)IDM012B22S
(H,Y,C)IDH030B22S (H,Y,C)IDM030B22S 5/8 (15.88) 3/8 (9.52)
(3) Prepare the field-supplied copper piping.

(4) Select clean copper pipes. Make sure there is no dust and moisture inside.
(5) The refrigerant oil used in combination with refrigerant R410A is susceptible to problems relating to
moisture contamination, oxide film, oil, and fat. Exercise special care during the installation so that
moisture, particulate contamination, or old refrigerant oil will not enter the refrigerant cycle. Otherwise,
impurities may adhere to the expansion valve and it may prevent the proper operation.
(6) Caution: When cutting piping, do not use conventional tools such as saws and grinding wheel cutting
disks produce harmful metallic filings that can damage a refrigerant system. Use a pipe cutter to
eliminate the chances of metal filings produced by the cutting operation. After the cut is made, blow out
each pipe with dry compressed air or nitrogen to remove this residue before making pipe connections.
In Case of Getting the Pipe Do not lay the pipe In Case of Rain
Through a Hole in the Wall directly on the ground. Correct Incorrect
Correct Incorrect Correct Incorrect

Rain water
can come in.
Hole Hole
Rubber Band
Attach a cap or put a plastic bag Attach a cap or put a plastic Attach a cap or put a plastic
over the pipe end. bag over the pipe end. bag over the pipe end.
P5417013-rev.3 21
6.2 Piping Connection
(1) Position of piping connection is shown below.
Unit: inch (mm)
Air Outlet (Front Side) Refrigerant Liquid Pipe
(φa Pipe with Flare Nut) Condensate Piping (VP25)
Condensate Plug
Refrigerant Gas Pipe
㸦φb Pipe with Flare Nut)
Air Outlet

2-9/16 (65) (Condensate Piping)
7-3/4 (197)
5-7/8 (150)
1-9/16 (40)
7-1/16 (180)

11-3/4 (299) (Condensate Pipe)
13-3/4 (350) (Condensate Plug)
Dimension
a b
Model
(H,Y,C)IDH015B22S 1/4 1/2
(H,Y,C)IDH018B22S (6.35) (12.7)
(H,Y,C)IDH024B22S
High Static (H,Y,C)IDH027B22S
Type (H,Y,C)IDH030B22S 3/8 5/8
(H,Y,C)IDH036B22S (9.53) (15.88)
(H,Y,C)IDH048B22S
(H,Y,C)IDH054B22S
(H,Y,C)IDM006B22S
(H,Y,C)IDM008B22S
1/4 1/2
(H,Y,C)IDM012B22S
(6.35) (12.7)
(H,Y,C)IDM015B22S
(H,Y,C)IDM018B22S
Medium Static
Type (H,Y,C)IDM024B22S
(H,Y,C)IDM027B22S
(H,Y,C)IDM030B22S 3/8 5/8
(H,Y,C)IDM036B22S (9.53) (15.88)
(H,Y,C)IDM048B22S
(H,Y,C)IDM054B22S
Figure 5.6 Position of Piping Connection
(2) Perform the flaring work as shown below.

inch (mm)
90o + 2o
Diameter +0
A
45 o (d) -0.02 (-0.4)
+ 2o
φA 1/4 (6.35) 0.36 (9.1)
3/8 (9.52) 0.52 (13.2)
1/2 (12.7) 0.65 (16.6)
0.016 ~ 0.031R
5/8 (15.88) 0.78 (19.7)
φd
(3) Use factory-supplied flare nut attached with the unit.

(4) Verify that there are no scratches, burrs stuck to internal surfaces, or surface deformations at the flared
opening.
(5) Before tightening the flare nut, apply the (Field-Supplied) refrigerant oil in a thin layer over the flared
part. (Do not apply the oil on other areas.) Tighten the flare nut for the liquid pipe to the specified torque
with two wrenches. Then, tighten the flare nut for the gas piping in the same way. After the tightening
work has been completed, check that no refrigerant leakage occurs.
NOTICE:
1. Refrigerant oil is field-supplied.
[ Polyvinyl Ether Oil FVC68D (Idemitsu Lubricants America) ]
2. It may cause cracks on resin parts if refrigeration oil adheres.
22 P5417013-rev.3
Apply Refrigerant Oil.
Required Tightening Torque
Pipe Size Tightening Torque
1/4 inch (6.35 mm) 10.3 - 13.3 ft·lbs (14 - 18 N·m)
Do not apply 3/8 inch (9.52 mm) 25.1 - 31.0 ft·lbs (34 - 42 N·m)
the refrigerant
1/2 inch (12.7 mm) 36.1 - 45.0 ft·lbs (49 - 61 N·m)
oil to the
outside of the 5/8 inch (15.88 mm) 50.2 - 60.5 ft·lbs (68 - 82 N·m)
flared opening.
(6) Wherever buried piping exists on site, make sure there is a service doorway to provide adequate access
to inspect piping sockets and elbows, and for interconnecting parts.
(7) Piping must be reinforced to withstand earthquakes so as not to be damaged by an external force.
(8) Do not tightly secure refrigerant piping to accommodate expansion and contraction.
(9) Prevent the pipes from touching structures such as walls, ceilings, etc. (Otherwise, abnormal sounds
may be heard due to vibration of the piping.)
(10) Leak test all piping and connections. The procedures should be performed in accordance with the
"Installation and Maintenance Manual" for the outdoor unit.
(11) If temperature and humidity inside the ceiling exceed 80.6°F (27°C)/RH80%, condensation occurs on
the surface of the accessory insulation. Wrap additional insulation (approximately 3/16 to 3/8 inch (5 to
10mm) thickness) around the accessory insulation of the refrigerant pipe as a preventive measure.
(12) Insulate each flare connection without gap with accessory insulations to prevent condensation. Then
insulate each refrigerant pipe as well.
Securely fasten cable bands and the vinyl tape

in order to prevent the accumulation of moisture.
Fasten with cable bands (accessory)

at 3 locations along the pipe. Attach the vinyl tape position at the vertical part
(Insulation for Refrigerant Pipe (Accessory)).
Refrigerant Pipe
(Field-Supplied)
Unit
Side
Insulation for
Refrigerant Pipe
(Field-Supplied)
Insulation Material
(Factory-Supplied)
Check for any gaps between
the indoor unit and the insulation.
● Do not apply excessive force to the flare nut when tightening. If applied, the flare nut may crack due
to stress fracture and refrigerant leakage may occur. Use the correct torque specifications.
● Make sure that a refrigerant leak test has been performed. Refrigerant (fluorocarbon) for this unit is
non-flammable, non-toxic, and odorless. If the refrigerant should somehow escape and come into
contact with flame, toxic gas will form. This gas is heavier than air and will settle near floor areas
and spread where it can cause asphyxiation to those nearby.
P5417013-rev.3 23
7. Condensate Piping
Do not run condensate piping into underground areas near sanitary or sewage lines where toxic and
corrosive gases can seep into the system. This creates a pathway for the flow of poisonous gas to
penetrate inhabited areas.
NOTICE
● Check to ensure that the condensate pipe discharges moisture properly. If connected incorrectly, it can
cause structural damage to indoor wall and ceiling surfaces and damage to property.
● Avoid sloping the condensate pipe upward as it will impede drainage. Otherwise, condensate will run
back into the unit and it may cause water leakage when the pump operation stops.
● Do not connect condensate piping with sanitary or sewer lines or any other condensate pipe.
● When a main condensate pipe is connected to other indoor units, the connected position of each indoor
unit must be higher than the main pipe. The pipe size of the main condensate pipe must be large enough
to accommodate all the connected units and their condensation.
● After performing condensate piping work and electrical wiring, check to ensure that water flow is smooth
using the following procedures.
Perform condensate piping work and attach the insulation before attempting any refrigerant piping work.
(1) Prepare a polyvinyl chloride (PVC) pipe with 1-1/4 inches (32mm) outer diameter VP25.
(2) Connecting Condensate Piping
Follow procedures (b) and (c) to install the factory-supplied condensate hose and pipe without adhesive.
(a) Connect the factory-supplied condensate hose at the condensate pipe connection using PVC
adhesive.
(b) Insert the condensate hose completely. If it is not inserted properly, or if it is twisted, water leakage
can occur.
(c) The hose clamp shall be 9/16 inch (15mm) away from the end face of the condensate hose. Then
tighten the hose clamp to make sure that it is approximately 1-9/16 (40mm) in length from the
screw to the edge of the hose clamp as shown in the figure below.
Condensate Piping Condensate Hose

Connection
The condensate hose is twisted

Insert the condensate hose completely.
or inserted incompletely.
(Correct) (Incorrect)
Elbow or Pipe Joint (Vinyl Chloride VP25) 9/16±3/16 inch

(Field-Supplied) Use PVC adhesive for connection. (15±5mm)
Hose Clamp (Accessory)
Tightening Torque*
Condensate Piping Connection
Min. 1-9/16 inches
Apply Thermal Insulation

(Field-Supplied)
(40mm)
For Checking Drainage

(Transparent Area) Condensate Hose (Accessory)
Completely fasten the tubing to the condensate hose.
(No Deformation)
*Tightening Torque: 2.2 to 2.6ft·lbs

(3.0 to 3.5N·m)
Figure 7.1 Condensate Hose Connection
24 P5417013-rev.3
(3) For Gravity Condensate Drain
Ask your distributor or dealer.
NOTICE
●● Make sure to use the factory-supplied condensate hose and hose clamp. Other makes are more
susceptible to moisture leakage.
●● Do not bend or twist the factory-supplied condensate hose. Sealing properties of the hose can be
compromised.
●● Do not apply excessive force to condensate pipe connections. They can be easily damaged.
(4) On-site Condensate Piping Work

(a) Connect the factory-supplied condensate hose to the condensate pipe connection using polyvinyl
chloride adhesive.
(b) When cleaning the connection surface, applying the adhesive, inserting, retaining and curing the
condensate pipe, refer to the information given by the adhesive manufacturer.
(c) Install supports at an interval of 3.3 to 4.9ft (1 to 1.5m) to prevent bending of the condensate pipe.
(d) Install condensate piping with a downward slope of 1/25 to 1/100 as shown below.
1/25 to 1/100 Down Slope Use PVC with VP25
Min. 3-15/16 inches (100mm)

(higher as possible)
This condensate pipe shall be
separated from other pipes.
Condensate Pipe of Unit Side Main Condensate Piping (Min. VP30)

(Downward Slope from Rising Part)
(e) Install the condensate hose horizontally or slightly on an upward slope to prevent air pockets from
forming inside it. If air pockets form, moisture will settle back into the unit, which could result in
undesired sluicing and bubbling noises, and spillover into the room after unit operation is stopped.
Condensate Pipe
Upward Slope (Approx. 5°)
(f) Raising Condensate Piping

In case of raising the condensate pipe, install it according to the dimension shown in the figure below.
The total condensate piping length of a+b+c shall be within 39-3/8 inches (1,000mm).
Slab
a
(Max. 11-13/16 inches c 3.3 to 4.9ft. Support Part
(300mm)) (1 to 1.5m)
Max. 33-7/16 inches
Hose Clamp
(Accessory)
b
(850mm)
(short as possible)
7-1/16 inches
1/25 to 1/100
(180mm)
Downward Slope
Condensate Hose (Accessory)
P5417013-rev.3 25
(g) Installing Main Condensate Piping
● Install the main condensate pipe on a downward slope to make sure that it is lower than each rising
part of the condensate pipe from the indoor unit.
● The size for the main condensate pipe must be larger than VP30, the nominal diameter size of
1-3/16 inches (30mm) and, outer diameter 1-1/2 inches (38mm) depending on the number of the
connected indoor units.
Refer to the above figure shown in (d).
●● Do not allow condensate pipe to rise or incline upward. Otherwise, the condensate water will flow
back into the unit and may cause water leaks when the unit is not in operation.
●● Do not connect the condensate pipe with sanitary or sewage piping or any other drainage piping
since it may cause corrosion of heat exchanger and abnormal smells.
(5) Drainage and Water Leakage Check

After performing the condensate piping work and electrical wiring work, check to ensure that water flows
smoothly according to the following procedures and figure below.
● Drainage Operation by Float Switch

The following are regular procedures to check the float switch operation.
(a) Turn ON the power supply.
(b) Pour 50 to 67oz (1.5 to 2 liters) of water gradually into the condensate pan.
(c) Check to ensure that water flows smoothly inside the transparent condensate pipe and has drained
out fully at the pipe end, and that no leaks occur.
(d) If the end of the condensate pipe cannot be checked visually, pour another 50 to 67oz (1.5 to 2
liters) of water into the condensate pan. If the water overflows from the condensate pan, there may
be an issue with the condensate riser pipe or condensate pipe. Recheck all condensate piping.
NOTICE:
1. Before installation of air outlet duct: Pour water from air outlet side with a cup.
2. After installation of air outlet duct: Pour water from the access door on the piping side of the unit.
Insert the pump end into the unit

and bend it downward. Access Door
Pump*
Bucket
Water
(50 to 67oz (1.5 to 2 liters))
* You may also use a water bottle to put water in unit for testing.
Figure 7.2 Drainage Check
26 P5417013-rev.3
● During heating season ensure all moisture and condensate has been removed from the condensate pan
after drainage testing.
● The heat exchanger is heated because a slight amount of refrigerant circulates inside the indoor unit
during periods of stoppage. As a result, moisture in the condensate pan evaporates and condensation
builds up inside the indoor unit which causes sweating and dripping. This can potentially cause
condensation issues.
● After the drain check is completed, reinsert the rubber plug and seal with a silicon sealant.
NOTICE:
Be careful that water does not splash onto electrical components such as the fan motor, float switch or
thermistors.
● Simplified Operation of Drain-up Mechanism

The following is the simplified operation procedure for the drain-up mechanism.
(a) Turn OFF the power supply.
(b) Disconnect the service connector.
* Make sure to hold the connector part. Do not take out and plug in the connector frequently
more than two or three times).
(c) Turn ON the power supply and start the simplified operation of the drain-up mechanism.
(d) Turn OFF the power supply.
(e) Reconnect the service connector.
Turn OFF the main power supply when handling service connector in order to avoid electrical shock.
Service Connector for Drain-up Mechanism

(Relay Connector for Float Switch)
Electrical Box
Terminal Block
PCB1
P5417013-rev.3 27
(6) Insulate the condensate pipe connection and the condensate hose after connecting them. If improperly
insulated, condensation may occur.
Unit: inch (mm)
Insulation (3/16T × 10-5/8 × 10-5/8 (5T × 270 × 270)) (Accessory)

Completely wrap the transparent area of the condensate pipe
connection and the hose clamp.
Hose Clamp (Accessory)
(7) Insulate the condensate piping with insulation wrap.
NOTICE:
If the relative humidity at the indoor unit
space exceeds 80%, install a (field-supplied) Indoor Unit
auxiliary condensate pan beneath the indoor
unit as shown in Figure 7.3.
Auxiliary Condensate Pan
(Field-Supplied)
Figure 7.3 Auxiliary Condensate Pan
28 P5417013-rev.3
8. Electrical Wiring
●● All electrical work must be done as outlined in this manual and in accordance with this manual.
Substandard work can result in fire and damage to the unit.
●● Use specified cables between units and connect the cables correctly. If not, an electrical shock or
fire may occur.
●● Do not open the service cover or access panel for the indoor or outdoor units without turning OFF
the main power supply. It can result in an electrical shock.
●● Turn OFF the main power switch of the indoor unit and the outdoor unit before attempting any electrical
wiring work or maintenance check. If power is left on it may result in an electric shock or a fire.
●● Check to ensure that the indoor fan and the outdoor fan have stopped before attempting any
electrical wiring work or for any scheduled electrical work that is being performed.
●● Electrical work should be performed by a licensed contractor. Personnel must be qualified
according to local, state and national building and safety codes and regulations. Incorrect
installation could cause leaks, electrical shock, fire or explosion.
●● Insulate electrical wiring, condensate piping and electrical components from threats posed by
rodents and insects, and temperature extremes. Failure to do so, can over time, affect system
performance.
●● GFCI may be recommended depending on the application; if not, electric shock or a fire can result.
●● Tighten screws according to the following torque.
M3.5: 0.9 ft·lbs (1.2 N·m)
M4: 0.7 to 1.0 ft·lbs (1.0 to 1.3 N·m)
●● Secure all cables together with zip-ties and seal the connecting hole against moisture and insects.
●● Run the electrical wiring through the connecting hole in the side cover when using conduit.
●● Secure the wired controller cable using the cable band inside the electrical box.
8.1 General Check

(1) Make sure that the field-selected electrical components: (main power switches, circuit breakers, wires,
conduit connectors, and wire terminals) have been properly labeled in accordance with electrical data
as specified in the Engineering Manual. Make sure that the components comply with local codes.
(2) Check to ensure that the power supply voltage is within ±10% of the rated voltage.
(3) Ensure wiring size is correct for equipment load.
Incorrect wire size may prevent system start-up due to a voltage drop.
(4) Verify that the ground wiring is securely connected.
P5417013-rev.3 29
8.2 Electrical Wiring Capacity
8.2.1 Field Minimum Wire Sizes for Power Supply
• This equipment can be installed with GFCI, which is a recognized measure for added protection to a
properly grounded unit. Install appropriately-sized breakers / fuses / overcurrent protection switches
and wiring in accordance to local codes and requirements. The equipment installer is responsible for
understanding and abiding by applicable codes and requirements. Failure to use GFCI can result in
electrical shock or fire.
• Do not operate the system until all the check points have been cleared.
(A) Verify that electrical resistance is more than one megaohm by measuring the resistance between
ground and the terminals of the line voltage connections. If less than one megaohm, do not activate
the system until the electrical current drain is found and repaired.
(B) Check to ensure that the stop valves for the outdoor unit are fully opened, and perform the Test Run.
(C) Check to see that the main power has been switched ON for longer than 12 hours prior activating
the system. Power to the crankcase heater needs this time interval to warm the compressor oil up to
operating temperature.
• Do not touch any of the parts by hand at the discharge gas side, since the compressor chamber and the
pipes at the discharge side could be in excess of 194oF (90oC).
8.2.2 Details of Electrical Wiring Connection

The electrical wiring capacity of the outdoor unit should be referred according to the "Installation and
Maintenance Manual" for the outdoor unit. Adjusting the DIP switches may be required depending on the
arrangement with the outdoor unit.
Select wiring capacity according to the table 8.1. Install GFCI and main switch as shown in each of the
system diagrams below.
Heat Pump System Heat Recovery System
Outdoor Outdoor
Unit Unit
Outdoor Unit
Power Supply
Outdoor Unit
GFCI Main Power Supply
Switch
GFCI Main
Change-Over
Indoor Indoor Indoor Switch
Box
Unit Unit Unit
Indoor Unit
Power Supply
Indoor Indoor Indoor
GFCI Main Switchbox
Unit Unit Unit
Switch
Indoor Unit
Refer to the “Installation and Maintenance Manual” Power Supply
for the connected outdoor unit for details of wire,
GFCI and main switch for outdoor unit.
GFCI Main Switchbox
Switch
Refer to the “Installation and Maintenance Manual”
for the connected outdoor unit for details of wire,
GFCI and main switch for outdoor unit.
30 P5417013-rev.3
Table 8.1 Recommended Wiring Capacity and Size
● High Static Type

Minimum Wire Thickness
GFCI Main Switch
MCA
[AWG (mm2)]
(Minimum
Power Power Nominal Circuit
Model Ground Nominal Nominal
Supply Supply Communication Current Sensitive Current Fuse Ampacity)
Wiring Current
Wiring Size Cable Size
Size
(Main) [A] [mA] [A] [A] [A]
(H,Y,C)IDH015B22S 2.4
(H,Y,C)IDH018B22S 2.4
(H,Y,C)IDH024B22S 2.9
(H,Y,C)IDH027B22S 1~, 2.9
18 18 18
208/230V 15 30 15 15
(H,Y,C)IDH030B22S (0.82) (0.82) (0.82) 4.7
60Hz
(H,Y,C)IDH036B22S 5.0
(H,Y,C)IDH048B22S 5.3
(H,Y,C)IDH054B22S 5.3
● Medium Static Type

Minimum Wire Thickness
GFCI Main Switch
MCA
[AWG (mm2)]
(Minimum
Power Power Nominal Circuit
Model Ground Nominal Nominal
Supply Supply Communication Current Sensitive Current Fuse Ampacity)
Wiring Current
Wiring Size Cable Size
Size
(Main) [A] [mA] [A] [A] [A]
(H,Y,C)IDM006B22S 1.0
(H,Y,C)IDM008B22S 1.2
(H,Y,C)IDM012B22S 1.7
(H,Y,C)IDM015B22S 1.9
(H,Y,C)IDM018B22S 1.8
1~,
18 18 18
(H,Y,C)IDM024B22S 208/230V 15 30 15 15 2.2
(0.82) (0.82) (0.82)
60Hz
(H,Y,C)IDM027B22S 2.2
(H,Y,C)IDM030B22S 3.5
(H,Y,C)IDM036B22S 4.0
(H,Y,C)IDM048B22S 4.5
(H,Y,C)IDM054B22S 4.5
NOTES:
1) Follow local codes and regulations when selecting field wiring and GFCI.
2) Select GFCI with an activation speed of (0.1 second or less).
3) Total operating current is less than 12A.
P5417013-rev.3 31
NOTICE
●● Check for the recommended size GFCI shown in the Table 8.1.
●● Between indoor and outdoor units, communication cabling should be a minimum of AWG18 (0.82mm2),
2-Conductor, Stranded Copper. Shielded cable must be considered for applications and routing in
areas of high EMI and other sources of potentially excessive electrical noise to reduce the potential for
communication errors. When shielded cabling is applied, proper bonding and termination of the cable
shield is required as per Johnson Controls guidelines. Plenum and riser ratings for communication
cables must be considered per application and local code requirements. Total cable length should not
exceed 3281 ft (1000m).
●● Select the wiring size, GFCI in accordance with the regulations for each region, the "Installation and
Maintenance Manual", and the dedicated electrical circuit that must be used.
●● Outside of the indoor unit, installation of the power supply wiring, communication cable, and wired
controller cable should be spaced as far apart as possible.
8.3 Position of Electrical Wiring Connection

• The electrical wiring connection for the indoor unit is shown in Section 8.2.2.
• The connections at the terminal block for the indoor unit is shown below. Check the outdoor unit for the
combination before performing any wiring. Screws in the terminal block should be tightened according to
recommended torque specifications as shown in the table below.
Torque Specifications for Terminals

Screw Size Torque Specification
0.7 - 1.0 ft·lbs
TB1 M4
(1.0 - 1.3 N·m)
0.9 ft·lbs
TB2 M3.5
(1.2 N·m)
Terminal Block for Terminal Block for

Power Supply Wiring Communication Cable
TB1 (black) TB2 (white)
Wired Controller Tranmission

R/L1 S/L2 Mp/N A B 1 2
NOTICE
● Do not connect the main power supply wiring to any terminals at TB2.
If high voltage is connected to TB2 the printed circuit board (PCB) will (C)
be destroyed.
Screw
● Note the following for wire connections at TB1 and TB2:
(A) When making connections, use only insulated crimp connectors. (B)
(B) Maintain a safe distance between the electrical box and the
(A)
terminals to prevent a short circuit.
(C) Maintain a safe distance between the terminals.
32 P5417013-rev.3
(1) Connect the cable for the optional controller or the optional extension cable to the terminals inside the
electrical box through the connecting hole of the cabinet.
(2) Connect the power supply and the ground wiring to the terminals in the electrical box.
(3) Connect the cables between the indoor unit and the outdoor unit to the terminals inside the electrical box.
(4) Ensure cables are connected to the correct terminals or damage will occur.
(5) Connect the communication cable between the indoor units connected to the same outdoor unit.
(6) Do not connect the main power supply wiring to any terminals at TB2. If connected, the PCB will be
destroyed.
(7) Tightly clamp the power supply wiring and communication cables using the cable band inside the
electrical box.
Connect it with
NOTICE: Crimping Terminal.
When the standard wire is used for the field-wiring connection, the M4
crimping terminal should be used. The screws at the terminal block
should be tightened according to the torque specification as shown in
the table above.
Stranded Wire
(8) All electrical work should be performed in strict accordance with electrical schematics in the "Installation
and Maintenance Manual".
(9) If Power Supply Voltage (208V/230V) is introduced into the Communication Line:
If 208V/230V) are applied to the communication line at (Terminals 1 and 2 of TB2) by mistake, the fuse
on the PCB for the communication line will blow. In this case, perform the recovery work as shown in
the diagrams below.
(a) Reconnect the wirings correctly.
(b) Set the No.1 pin at DSW7 (on the PCB) to ON.
Upon PCB recovery after the fuse has been replaced, if 208V/230V//220-240V is reintroduced into the
communication line, the PCB will be seriously damaged.
TB1 TB2 TB1 TB2

R S R S PCB
L1 N A B 1 2 A B 1 2
L1 N DSW7
ON
AC 208V/230V AC 208V/230V OFF
1 2
5V 5V
Set No.1 Pin to
the ON position.
Incorrect Wiring Reconnect wirings correctly.
P5417013-rev.3 33
(10) Wired Controller Connection
● VRF Systems
(a) Wired Controllers to each Unit for Individual Operation Setting
Indoor Unit Indoor Unit
Outdoor Unit A B A B
Wired Wired
Controller Controller
(b) Single Wired Controller for Individual Operation Setting
Indoor Unit Indoor Unit

Outdoor Unit A B A B
Wired
Controller Communication cables
between indoor units
are necessary.
(c) Wired Controller Connections between different Refrigerant Cycles
Outdoor Unit Indoor Unit Indoor Unit Indoor Unit Indoor Unit Outdoor Unit
A B A B A B A B
Wired Wired Wired

Controller Controller Controller
Individual Simultaneous Individual
(Thermo ON / OFF individually)
NOTICE
1. The DIP switch settings for the outdoor unit should be performed in accordance with the "Installation
and Maintenance Manual" for the outdoor unit.
2. Be aware that communication cables between indoor units is required in these instances:
a. The following functions are set to the sub unit which is not installed with the wired controller.
●●Remote ON/OFF function settings, (No.1, 2, and 3), (External Input / Output Function)
●●Power supply ON/OFF functions, (No.1 and 2), (Function Selection)
●●Prohibiting the wired controller after manual stoppage (External Input / Output Function)
●●Group setting by the centralized controller
b. The combination of multiple indoor units is controlled by a single wired controller.
c The addresses of the indoor units are to be changed from the wired controller.
34 P5417013-rev.3
Caution for Electrical Wiring
● Do not connect the power supply wiring and the communication cable to the same terminals.
● The manual switchbox is required when communication cable is required.
Indoor Unit Indoor Unit Indoor Unit
R S Mp
L1 L2 N
R S Mp
L1 L2 N
R S Mp
L1 L2 N
Incorrect
G
F S
C
I
Indoor Unit Indoor Unit Indoor Unit
R S Mp
L1 L2 N
R S Mp
L1 L2 N
R S Mp
L1 L2 N
Correct
G
F S
C
I
Switchbox
8.4 Wiring Connection

(1) Remove the electrical box cover.
Remove two screws at the bottom and one screw below the connecting hole. Then loosen but do not
remove two screws at the top side to remove the electrical box cover.
(2) Pass the communication cable and the wired controller cable through the connecting hole for
communication cable.
Connect the communication cable to the terminals 1, 2 of TB2 inside the electrical box.
Connect the wired controller cable to the terminals A, B of TB2 inside the electrical box.
(3) Pass the power supply wiring and the ground wiring through the connecting hole for power supply
wiring.
Connect the power supply wiring to the terminals L1, L2 of TB1 inside the electrical box.
Connect the ground wiring to the ground terminal inside the electrical box.
(When connecting the power supply wiring and the ground wiring outside of the unit, ensure all wiring is
routed through electrical conduit tube.)
(4) After all wiring is complete, exercise caution when reinstalling the electrical box cover.
P5417013-rev.3 35
φ7/8 inch (22.2mm)
Conduit Opening for Power Supply Wiring
Opening for Electrical Wiring φ1-1/4 inches (32.5mm) with Rubber Bushing
of Indoor Unit Opening for Communication Cable
and Wired Controller Cable
Electrical Box Cover

Electrical Box Cover
Terminal Block TB2 (White)
Wired Controller Cable

and Communication Cable
Power Supply Wiring

and Ground Wiring
PCB
Ground Screw Terminal Block TB1 (Black)
Figure 8.1 Electrical Wiring Connections
NOTE Terminal Block (White)

A B 1 2
• Insert the communication cable and wired controller cable Wired Controller
into the PVC tube “VW-1 600V” (Accessory) to separate

for Transmission
from the power supply wiring for the indoor unit.

• Attach cable band (Accessory) to both ends of the PVC
Attach the PVC Tube by
tube by squashing the end. Cable Band (accessory)
Communication Cable
Wired
Controller Cable PVC Tube “VW-1 600V”
(accessory)
Install and secure all electrical wiring correctly through the opening, to the terminal blocks using
cable bands. Wiring should be spaced appropriately and firmly fastened to prevent electrical shorts,
arcing or fire.
36 P5417013-rev.3
8.5 Caution for Motion Sensor Kit (SOR-NEZ)
(1) The motion sensor can be connected up to 16 indoor units by one wired controller (CIW01). The
motion sensor is activated even if it is installed without motion sensor.
(2) When the multiple indoor units with motion sensor are controlled by one wired controller (CIW01), the
communication cable for the wired controller is required for all the indoor units. If not, the indoor units
with motion sensor are not activated.
I.U. with I.U. with I.U. with I.U. with

Motion Motion Motion Motion
Sensor Sensor Sensor Sensor
Communication for Wired Controller

Wired Controller
(3) In case two wired controllers are connected, the motion sensor can be set on only the main wired
controller. The sub wired controller is for the display only.
I.U. with I.U. with

Motion Motion
Sensor Sensor
Wired Controller Wired Controller

Main: Setting is Available. Sub: Setting is NOT Available.
(4) The wired controller CIW01 must be utilized. Others are not available to set the motion sensor.
(5) The motion sensor function will not apply to an indoor unit without a wired controller.
(6) The motion sensor can not be set from a central controller.
(7) The motion sensor can not be used when it is connected to the same wired controller of an indoor unit
in another refrigerant cycle which is set as the simultaneous operation.
(8) The room thermostat function is not available.
P5417013-rev.3 37
8.6 DIP Switch Settings
(1) Turn OFF the power supply to both indoor and outdoor units before adjusting DIP switch settings.
Otherwise, the settings will not take effect.
(2) Positions of DIP switches are shown below.
DSW4 (Unit Model Code Setting)
RSW1, DSW5
(Refrigerant Cycle No. Setting)
DSW3
(Capacity Code No. Stting)
RSW2, DSW6
(Indoor Unit No. Setting)
DSW9
(Optional Function Setting)
DSW7
(Fuse Recover)
(3) Unit No. Setting (RSW2 and DSW6)

Setting is not required. Unit No. Setting
Indoor unit numbers are set by the auto-address DSW6 (Tens Digit) RSW2 (Units Digit) Ex.) Set at No.16 Unit
DSW6
function. If an indoor unit number setting is Setting
Position
Set by inserting
slotted screwdriver
ON ON
required, set the unit number of all indoor units 901
into the groove.
1 2 3 4 5 6 OFF 1 2 3 4 5 6 OFF
respectively and sequentially by following setting
23
78
45 6
Set No.1 Pin at ON side
position. It is recommended that you assign a
RSW2
number to each indoor unit from “1”. A maximum Before shipment, DSW6 and RSW2 are set at "0".
901
of 64 indoor units per refrigerant cycle can be For the units supporting H-LINK II,
23
78
45 6
the unit No. can be set for Max. 64 indoor units
connected to an H-LINK ll System. Though the (No.0~63). Set at "6"
available numbers range from zero to 63, the
applicable number for the 64th indoor unit in
theory supplants the number "zero".
For centralized control, this setting is required.
(4) Capacity Code Setting (DSW3)

No setting is required, due to setting before shipment. This switch is utilized for setting the capacity
code which corresponds to the capacity of the indoor unit.
Indoor Unit Capacity

06 08 12 15 18
(MBH)
ON ON ON ON ON
Setting Position
1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6
OFF OFF OFF OFF OFF
Indoor Unit Capacity
24 27 30 36 48 54
(MBH)
ON ON ON ON ON ON
Setting Position
1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6
OFF OFF OFF OFF OFF OFF
(5) Unit Model Code Setting (DSW4)

No setting is required. It is for setting the model code of the indoor unit.
Do not change the setting. Otherwise, unit will not operate effectively.

ON ON
1 2 3 4 1 2 3 4
OFF OFF
38 P5417013-rev.3
(6) Refrigerant Cycle No. Setting (RSW1 and DSW5) Refrigerant Cycle No. Setting
DSW5 (Tens Digit) RSW1 (Units Digit)
This setting is required. The unit arrives with all Ex.) Set at No.5 Cycle
Setting Set by inserting DSW5
settings in the OFF position. ON
Position slotted screwdriver
ON
into the groove.
901
1 2 3 4 5 6 OFF 1 2 3 4 5 6 OFF
23
78
45 6
Set All Pins OFF
Before shipment, DSW5 and RSW1 are set at "0". RSW1

901
For the units supporting H-LINK II,
23
78
45 6
the ref. cycle No. can be set for Max. 64 cycles.
(No. 0~63) Set at "5"
(7) Fuse Recover (DSW7) ON

* Factory Settings
1 2
OFF ON
* When high voltage is applied to terminals 1 and 2 of TB2,

the 0.5A fuse on the PCB will blow. If this has happened, first reconnect 1 2
the wiring correctly to TB2, and then set the number one pin to ON. OFF
(8) Optional Function Setting (DSW9)

No setting is required. Setting positions before shipment are all OFF.
ON
1 2 3 4
OFF
NOTICE:
● The “■” mark indicates setting for DIP switches. The illustration immediately above show settings in the
OFF position.
● When the unit number and the refrigerant cycle are set, record the unit number and refrigerant cycle to
facilitate ease of service and maintenance thereafter.
NOTICE
Turn OFF all power to the indoor and outdoor units prior to adjusting DIP switch settings. Otherwise, the
setting will be invalidated and not take effect.
8.7 External Static Pressure Setting

The factory setting of external static pressure is set to Standard. The setting can be changed to High
Pressure Setting 1 or High Pressure Setting 2.
Follow the procedure in “Function Selection by Wired Controller” section for changing the setting for the
external static pressure.
P5417013-rev.3 39
8.8 Function Selection by Wired Controller
Each function can be selected with the wired controller.
Refer to the “Installation and Maintenance Manual” for the wired controller and the “Engineering Manual” for
details.
● Set external static pressure using wired controller.
(1) Press and hold "Menu" and "Back/Help" simultaneously for at least 3 Test Run Menu
seconds during the normal mode (when unit is not operated). The test
Test Run
run menu is displayed.
Function Selection 01
Thermistor Selection /
(2) Select “Function Selection” from the test run menu and press “OK”. Input/Output 03
Function 5
Sel. OK Entr Back Rtrn
(3) Select the indoor unit by pressing “ ” and press “OK”. Function Selection
(This screen is NOT displayed when the number of indoor unit All
connected with the controller is 1 (one).
01-01
In this case, (4) is displayed.)
Press "All" to select all the indoor units connected to the wired 01-02
controller. 01-03
01-04
(4) Press “ ” and select the item required to change. Function Selection:01-03
Item Setting
C2 --
04
C3 00
/
C4 00
17
C5 00
C6 00
Sel. Adj. OK Entr Back Rtrn
(5) Press “ ” and change the setting. Function Selection:01-03

Item Setting
C2 --
04
C3 00
/
C4 00
17
C5 01
C6 00
(6) Press “OK” to display the confirmation screen. Function Selection:01-03
Confirm function
(7) Select “Yes” and press “OK”. selection setting?
The test run menu is displayed after the setting is confirmed.
If “No” is pressed, the screen will return to (4). Yes No
(8) Press "Back/Help" on the test run menu to return to the normal mode. Sel. OK Entr Back Rtrn
(Figure for Function Selection)
To set other units, press "Back/Help" at (4), (5) so that the screen will return to (3).
(If the number of indoor unit connected with the controller is 1 (one), the screen will return to (1).)
40 P5417013-rev.3
Function Setting Condition (Underlined Part is Factory Setting)
Optional Function Selection Unit
Item 00 01 02 03 04 05 06 07 08 09 10
External 0.2 0.4 0.8

High Static Type
Static in.W.G (50) (100) (200)
C5
Pressure (Pa) 0.2 0.4 0.6
Setting Medium Static Type
(50) (100) (150)
Not
Automatic COOL/HEAT Operation b8 - Available
Available
Not
Dual Setpoint R1 - Available
Available
o
Cooling/Heating F 2 3 3* 4 5 1
(A) R2
Changeover Temperature (oC) (1.0) (1.5) (2.0) (2.5) (3.0) (0.5)
o
Setback Temperature Compensation F 4 5 6 7 8 9 10 1 2 3 3*
R3
(During card key removal, setpoint is setbacked) (oC) (2.5) (3.0) (3.5) (4.0) (4.5) (5.0) (5.5) (0.5) (1.0) (1.5) (2.0)
Not
Auxiliary Heater Setting q1 - Available
Available
o
Auxiliary Heater ON F -3 -3* -4 -5 -6 -7 -8 -9 -1 -2
q2
Compensation (oC) (-1.5) (-2.0) (-2.5) (-3.0) (-3.5) (-4.0) (-4.5) (-5.0) (-0.5) (-1.0)
(B) o
Auxiliary Heater OFF F 0 1
q3
Compensation (oC) (0.0) (0.5)
o
Ambient Temperature Restriction F -4 2 8 14 20 26 32 -13 -8
q4
Setpoint (oC) (-20.0) (-17.0) (-13.0) (-10.0) (-7.0) (-3.0) (0.0) (-25.0) (-22.0)
(C) o
Ambient Temperature Restriction F 4 5 6 1 2 3 3*
q5
Setpoint Compensation (oC) (2.5) (3.0) (3.5) (0.5) (1.0) (1.5) (2.0)
Auxiliary Heater OFF at Defrosting Not
L9 - Available
Operation Available
* Not displayed when fahrenheit (oF) is selected to be displayed.
(A) (B) (C)
Auxiliary Heater ON Compensation

Cooling Setpoint+R2 Setpoint+q3 q4+q5
Cooling Setpoint Setpoint Ambient Temperature
Restriction Setpoint q4
Indoor
Temperature
Setpoint+q2 Normal Operation
Heating Setpoint Forced Thermo-OFF
Heating Setpoint-R2 Auxiliary Heater ON
Auxiliary Heater OFF

Heating
Cooling
P5417013-rev.3 41
8.9 Setback Operation
(1) Press and hold “Menu” and “Back/Help”on the wired controller simultaneously for at least three seconds
during the normal mode (unit stoppage).
The Test Run menu will be displayed.
(2) Select “Input/Output” from the Test Run menu and press “OK”.
Test Run Menu
Test Run
Function Selection 01
Thermistor Selection /
Input/Output 03
Function 5
(3) Select either "Input 1" or "Input 2" and change the setting to "09". Input/Output:01-03
Item Setting Connector
Input 1 00 CN3 1-2
Input 2 00 CN3 2-3
Output1 00 CN7 1-2
Output2 00 CN7 1-3
Output3 00 CN8 1-2
(4) Build a circuit such as shown below.
TB1 Indoor Unit

Card Key
1 CN3 CN3
2 1 1
2 2
3 3 3
No Voltage "a" Contact
When the card key is inserted (i.e.
PSC-5RA
someone is in the room), then the
contact turns ON.
Wired
Controller
(5) Temperature compensation for the setback function can be selected on the wired controller.
Refer to “Function Selection by Wired Controller” section for details.
42 P5417013-rev.3
9. Test Run
9.1 Before Test Run
Verify that there are no problems with the installation, and do not perform Test Run until all the following
conditions are resolved.
Refer to the "Installation and Maintenance Manual" for the outdoor unit for details on Test Run operations
from the outdoor unit.
Verify that refrigerant piping and the communication cable are connected to the same refrigerant cycle
system. If not, it will cause abnormal operation and damage to system components.
(1) Verify that electrical resistance is more than one megaohm, by measuring the resistance between
ground and the terminal for electrical components. If the electrical resistance is less than one megaohm,
do NOT operate the system until the electrical current outflow to ground is detected and repaired. Do
not introduce any high voltage to the terminals of the communication cables
(TB2 terminals A and B or 1 and 2).
(2) Verify that each wire is connected correctly at the correct phase for the power supply. If it is incorrectly
connected, the unit will not operate and the wired controller will display the alarm code “05”. In this
case, check the phase for the primary power supply according to the “Attention” label affixed to the back
side of the service cover. Then, with the power supply turned OFF at the power supply, verify the correct
connections.
(3) Check to ensure that the main power supply has been turned ON for more than 12 hours to allow
crankcase heaters to warm up the compressor oil.
(4) Verify that all DIP Switch settings are correct. Refer to Section 8.6 “DIP Switch Settings”.
9.2 Test Run

After all installation work is completed, Test Run should be performed.
(1) Check to ensure that stop valves (gas and liquid) for the outdoor unit are fully opened.
(2) Whenever indoor units are connected to the VRF system, perform the Test Run for the indoor units
one by one sequentially and then check the refrigerant piping system and the electrical wiring system
for conformity. (If these multiple indoor units are operated simultaneously, system conformity cannot be
verified.)
(3) Perform the Test Run in accordance with the following procedure. Ensure that the Test Run is carried
out without any problem. The following procedure shows a case where a wired controller is utilized.
If other controllers are activated instead, refer to the "Installation and Maintenance Manual" for those
other controllers.
NOTICE:
The outdoor unit may not be operated depending on the indoor and outdoor temperature conditions.
Refer to the "Installation and Maintenance Manual" for outdoor units for details.
(a) Press and hold “Menu” and “Back/Help” simultaneously for at least 3 seconds.
The Test Run menu is displayed.
Test Run Screen
Test Run Setting: 2 units

MODE COOL
SPEED AUTO
NOTICE:
If “00 unit” is displayed, the system may be in
the auto-address function.
Cancel “Test Run” mode and reset.
Sel. Adj. ON Back Rtrn
P5417013-rev.3 43
● The total number of connected indoor units is indicated on the LCD (Liquid Crystal Display). In
the case of a twin combination (set of two indoor units), the total number of the connected indoor
units is displayed as “2 units”, and where there is a triple combination (set of three indoor units),
the total number of the connected indoor units is displayed as “3 units”.
● If the number indicated is not equal to the actual number of connected indoor units, the auto-
address function is not performing correctly due to incorrect wiring or electrical interference. Turn
OFF the power supply, and resolve the wiring issue after verifying the following items; (When
resetting power, allow 3-5 minutes before turning power back on.)
◦◦ The power supply to the indoor unit is not turned ON or there is an incorrect wiring issue.
◦◦ Incorrect connection of the interconnecting cable between indoor units or a poorly connected
controller cable.
◦◦ Incorrect setting of the rotary switch and DIP switch for the indoor unit PCB. (The setting is
overlapped.)
● Press “ On/Off” to start the Test Run.
● Press “ ” and set each item.
(b) Press “ On/Off”.
The RUN indicator turns ON and the operation starts. At this time, a two-hour OFF timer is set
automatically.
(c) Verify that the motion sensor is operating “A” Check Menu
correctly using the following steps (if there is a
Check 1
decorative panel with a motion sensor).
Check 2 01
1. Press and hold “Menu” and “Back/Help”
simultaneously for at least three seconds Alarm History Display /
Model Display 02
during the Test Run mode.
The Check Menu screen “A” is displayed. Function 5
Select "Check 1" at the Check Menu

screen and press "OK".
“B” Model Display:01-02 Model:F .08
2. Screen “B” will be displayed. 01-01
(This screen is NOT displayed when only 01-02
one indoor unit is connected to the wired 01-03
controller. In this case, screen “C” is 01-04
displayed.)
IDU : ****** S/N:000000
ODU : ****** S/N:000000
3. Select the indoor unit by pressing “C” Check 1:01-03

“ ” and press “OK”.
Item Value
The Check Data screen “C” is displayed. L3 00
01
L4 00
/
P1 00
07
P2 10
q1 50
Next Page Back Rtrn
4. Press “ ” to change the screen until it displays the check screen “q1”.
44 P5417013-rev.3
< Checking the Motion Sensor >
1. Perform a motion detection action (such as waving a hand) under the motion sensor of the
selected indoor unit for approximately 10 to 15 seconds.
2. Check the value of “q1" after 30 seconds(*1) from starting the motion detection at Step 1. The
detection information from the motion sensor against the motion detection is displayed at a
range of 0% to 100%.
(*1): Communication between the indoor unit and the controller occurs every 30 seconds. Timing for
motion detection and the detected information being displayed is shown below..
: Communication Data NOTICE:

Cycle 30 seconds.
30 sec. 30 sec. Refer to the operation manual for indoor
unit settings, setup of the motion sensor.
(“Motion Sensor Setting”, “If Absent” and
Motion Detection Detected Information “Check Interval” can be set.)
Display
(for 30 seconds)
3. Check that the value of “q1” is neither 0% nor 100%.

If the value displayed is 0% or 100%, repeat the procedures from Step 1. If the same value
reappears, it may be a malfunction of the motion sensor.
(d) Though temperature recordings by the thermistors are invalid during the Test Run phase, the
protection devices are valid.
(e) For VRF System
According to the label; “Checking Method by 7-Segment Display” affixed to the inside of the front
cover of the outdoor unit, check temperature, pressure, and operation frequency, and interconnected
indoor unit numbers by 7-Segment displays.
(f) To complete Test Run, press “ On/Off” again or wait for the
set Test Run time to pass. Test Run: 2 units
When changing the Test Run time, press “ ” or “ ” to select MODE COOL
“TEST TIME”. Then, set the test run time (30 to 600 minutes) SPEED AUTO
by pressing “ ” or “ ”.
Test Time 120min
Inverter 60Hz
Sel. Adj. OFF
●● The RUN indicator on the wired controller for the indoor unit will flash orange (0.5 second ON/ 0.5
second OFF), indicative of a fault or error having been generated with activation of protection devices
during the Test Run phase. Alarm code, unit model code, and the number of interconnected indoor
units will be displayed on the LCD as shown below. If the RUN indicator on the wired controller
flashes for two seconds ON and two seconds OFF, the source of the problem could be a failure in the
communication cable between the indoor unit and the wired controller (a loose or severed connection).
In this case, verify Section 9.3 “Alarm Code” and perform the appropriate troubleshooting measures.
Consult with an authorized service engineer if the problem cannot be resolved at your end.
Refrigerant Cycle No. Indoor Unit No. of Indoor Unit

of Indoor Unit Having
01-02 Trouble
Having Trouble
Alarm Code: 22 Chek

01 - 02
MODEL : F .02 AlarmRst Alarm Code: 22 Alarm Code No.
I.U.
IDU : ******
RCI-3.0FSN3
Address
ODU
O.U. : RAS-3HVRNM2
****** MODEL : F . 02
Total No. of Indoor Units in the
Sel. OP MODE OK Entr Same Refrigerant Cycle as the
Unit Model Code Indoor Unit Having Trouble
Unit Model Code

The relationship between the unit model code
and the unit model is shown in the table below.
Indication Unit Model
F VRF System
E Except Above Models
P5417013-rev.3 45
9.3 Alarm Code
Alarm (Troubleshooting) Code Table
Code
Category Nature of Problem Likely Cause
No.
Activation of a protection device Activation of the float switch; (High water level present in
01 Indoor Unit
(Float switch) the condensate pan.) A problem exists in the piping.
Activation of protection device; High Pressure Cut; (R410A: 601 psi (4.15MPa)), fan
02 Outdoor Unit
(Except for Alarm Code: 41, 42) motor lockup during the outdoor unit cooling operation.
Communication failure between Incorrect wiring, loose terminals, disconnected wiring or a
03 Communication
indoor and outdoor units blown fuse.
04-09 Problem with the outdoor unit; (Refer to the "Installation and Maintenance Manual" for outdoor units.)
11 Inlet Air Thermistor failure
12 Sensor on Outlet Air Thermistor failure Loosely connected, disconnected, or a severed
13 Indoor Unit Freeze Protection Thermistor failure connection.
14 Gas Piping Thermistor failure
Fan motor lockup, fan motor protection control device for
19 Fan Motor Problem with Indoor Fan
indoor unit activated.
20-29 Problem with the outdoor unit; (Refer to the "Installation and Maintenance Manual" for outdoor units.)
Incorrect capacity setting for indoor Incorrect capacity code setting for combination, excessive
31
and outdoor units. or insufficient total indoor unit capacity code.
Incorrect setting of other indoor unit Problem with a different Indoor Unit in the same refrigerant
32
System number cycle; (Failure at the power supply, defective PCB).
35 Incorrect setting of indoor Indoor unit number duplicated in same refrigerant group.
Indoor unit is designed for other refrigerant; (R22 or
36 Incorrect indoor unit combination
R407C).
38-59 Problem with the outdoor unit; (Refer to the "Installation and Maintenance Manual" for the outdoor unit.)
b0 Incorrect setting for unit capacity Incorrect setting for unit capacity
System Incorrect setting of unit and
b1 Unit number or refrigerant cycle > 64
refrigerant cycle number
This alarm code displays when the alarms such as
EE Compressor Compressor protection alarm damage to the compressor occur three times within a six
hour period.
● When the RUN indicator flashes every four seconds, there is a communication failure between the indoor
unit and the wired controller (loose connector, disconnected or incorrect wiring, or a severed connection).
● The indication of the alarm code “EE” indicates a serious compressor issue and must be addressed.
Refer to the "Installation and Maintenance Manual" for the indoor/outdoor unit connections.
NOTICE
Do NOT operate the air conditioning just to run checks on electrical wiring until preparations for the Test Run
phase are complete.
All the installation work of the air conditioning is completed.

Handover this information to the building owner and request to maintain all the equipment manuals
and warranty.
Refrigerant Leak Check

Conduct a periodic refrigerant leak check to maintain product performance and secure storage of refrigerant
(Fluorocarbons). After completing installation, record the following results into this manual:
1. Results of a leak test all piping and connections
2. Total refrigerant charge volume dispensed (including a trim charge added following the installation)
3. Result of the refrigerant leak check
Then hand it over to users and ask them to retain for reference.
All periodic service and maintenance procedures must be conducted only by authorized and trained personnel.
46 P5417013-rev.3
10. Fan Performance Curves
High Static Type
NOTE:
The settings of Standard, High Static Pressure 1 and High Static Pressure 2 Mode can be changed using
the Wired Controller.
P5417013-rev.3 47
NOTE:
48 P5417013-rev.3
Medium Static Type
NOTE:
P5417013-rev.3 49
NOTE:
50 P5417013-rev.3
NOTE:
P5417013-rev.3 51
© 2017 Johnson Controls, Inc.
P5417013-rev.3
Code No. LIT-12012498

Revised January 2018

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Installation

READ AND UNDERSTAND

Heating Indoor 80oF DB (27oC DB) 59oF DB ( 15oC DB)

Product Inspection upon Arrival

6. Refrigerant Piping Work.................................................................................................................................21

10. Fan Performance Curves...............................................................................................................................47

Read following sections carefully before installing this product.

Indicates a hazardous situation that, if not avoided, could result in minor or

Indicates information considered important, but not hazard-related (for

Take the following precautions to reduce the risk of property damage.

●● When installing the unit into…

To reduce the risk of serious injury or death, the following refrigerant

3.2 Transportation and Handling

3.3 Factory-Supplied Accessories

Accessory Qty. Purpose

Truss Head Screw

Air Inlet Side

3.4 Necessary Tools and Instrument List for Installation

No. Tool No. Tool NOTE:

Air Outlet Service Access Door 1

Service Access Door

View from Bottom View from Bottom Side View

In case that the ceiling board Figure 4.1 Service Space

Unit: inch (cm)

Figure 4.2 Recommended Installation Space

Diameter 27.9 (8.5)

Figure 4.3 Detecting Area for Motion Sensor

Unit: inch (mm)

2-3/8 (60) A: Unit Width

Air Inlet Side 4-Holes 1-9/16 (40) x 1/2 (12)

Air Outlet Side

Figure 5.1 Suspension Bolts

Unit: inch (mm)

For Wooden Beam Suspension

Figure. 5.2 Mounting of Suspension Bolts

5.3 Intaking Air from Bottom Side

Figure 5.3 Intaking Air from Bottom Side

(1) Mounting Nuts and Washers

Suspension Bolt (Field-Supplied) Unit: inch (mm)

* Washer with Insulation (Accessory)

Suspension Bracket (Attached Indoor Unit)

Figure 5.4 Suspension Bolts and Nuts

(2) Mounting the Indoor Unit

Figure 5.5 Suspended Indoor Unit

Figure 5.6 Position of Piping Connection

The unit should be installed so the

Figure 5.7 Checking Vertical Alignment

Silencer Canvas Duct Canvas Duct Silencer

Figure 5.8 Duct Connection Example

Notice for Outdoor Air Intake (Fresh Air)

1) Considering Ventilation Load

3) Facilities for Outdoor Air Intake

Unit: inch (mm)

Thermal Damper for

Damper for Fine An air filter which

Figure 5.9 Duct Connection Example

5.5 Installation of Optional Parts or Field-Supplied Parts

5.6 Wired Controller Settings

5.7.1 Selection of Auxiliary Heater