Fujitsu ARXC90GATH Installation Manual

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Fujitsu ARXC90GATH Installation Manual | Manualzz
INNENGERÄT (Kanaltyp)
Nur für autorisiertes Fachpersonal.
MANUEL D’INSTALLATION
UNITÉ INTÉRIEURE (Type à conduit)
Pour le personnel agréé uniquement.
MANUAL DE INSTALACIÓN
UNIDAD INTERIOR (Tipo de ducto)
ARXC72GATH
ARXC90GATH
Únicamente para personal de servicio autorizado.
MANUALE DI INSTALLAZIONE
UNITÀ INTERNA (tipo a condotto)
Deutsch
INSTALLATIONSANLEITUNG
Français
For authorized service personnel only.
Español
INDOOR UNIT (Duct type)
Italiano
INSTALLATION MANUAL
English
TM
MANUAL DE INSTALAÇÃO
UNIDADE INTERIOR (Tipo de duto)
Apenas para técnicos autorizados.
РУКОВОДСТВО ПО УСТАНОВКЕ
ВНУТРЕННИЙ МОДУЛЬ (Короб)
Только для авторизованного обслуживающего персонала.
MONTAJ KILAVUZU
İÇ ÜNİTE (Kanal tipi)
Português
Μόνο για εξουσιοδοτημένο τεχνικό προσωπικό.
Русский
ΕΣΩΤΕΡΙΚΗ ΜΟΝΑΔΑ (Τύπος αγωγού)
Türkçe
ΕΓΧΕΙΡΙΔΙΟ ΕΓΚΑΤΑΣΤΑΣΗΣ
Ελληνικά
A uso esclusivo del personale tecnico autorizzato.
Yalnızca yetkili servis personeli için.
Refer to the rating label with the serial number.
MADE IN THAILAND
[Original instructions]
PART NO. 9365748275
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INSTALLATION MANUAL
CAUTION
PART NO. 9365748275
VRF system indoor unit (Duct type)
This mark indicates procedures which, if improperly performed,
might possibly result in personal harm to the user, or damage to
property.
Read carefully all security information before use or install the air conditioner.
Do not attempt to install the air conditioner or a part of the air conditioner by yourself.
This unit must be installed by qualified personnel with a capacity certificate for handling
refrigerant fluids. Refer to regulation and laws in use on installation place.
Contents
1.
SAFETY PRECAUTIONS ..........................................................................................1
2.
ABOUT THIS PRODUCT ..........................................................................................1
2.1. Precautions for using R410A refrigerant ............................................................1
2.2. Special tool for R410A ........................................................................................1
2.3. Accessories ........................................................................................................2
2.4. Optional parts .....................................................................................................2
3.
INSTALLATION WORK .............................................................................................2
3.1. Selecting an installation location ........................................................................2
3.2. Installation dimension .........................................................................................3
3.3. Installing the unit .................................................................................................3
4.
PIPE INSTALLATION ................................................................................................4
4.1. Selecting the pipe material .................................................................................4
4.2. Pipe requirement ................................................................................................4
4.3. Brazing connection (pipe connection) ................................................................5
4.4. Installing heat insulation .....................................................................................6
5.
INSTALLING DRAIN PIPES ......................................................................................6
6.
ELECTRICAL WIRING ..............................................................................................7
6.1. Electrical requirement .........................................................................................7
6.2. Wiring method ....................................................................................................8
6.3. Unit wiring ...........................................................................................................8
6.4. Connection of wiring ..........................................................................................9
6.5. Airflow changing .................................................................................................9
6.6. External input and external output (Optional parts) ..........................................10
6.7. Remote sensor (Optional parts) ......................................................................12
6.8. IR receiver unit (Optional parts) ........................................................................12
7.
FIELD SETTING ......................................................................................................13
7.1. Setting the address ...........................................................................................13
7.3. Function setting ................................................................................................14
7.2. Custom code setting .........................................................................................14
8.
TEST RUN ...............................................................................................................15
8.1. Test run using Outdoor unit (PCB) ..................................................................15
8.2. Test run using remote controller .......................................................................15
9.
CHECK LIST............................................................................................................15
10. ERROR CODES ......................................................................................................15
1. SAFETY PRECAUTIONS
• Be sure to read this Manual thoroughly before installation.
• The warnings and precautions indicated in this Manual contain important information pertaining to your safety. Be sure to observe them.
• Hand this Manual, together with the Operating Manual, to the customer. Request the customer to keep them on hand for future use, such as for relocating or repairing the unit.
WARNING
This mark indicates procedures which, if improperly
performed, might lead to the death or serious injury of the
user.
Request your dealer or a professional installer to install the indoor unit in accordance
with this Installation Manual. An improperly installed unit can cause serious accidents
such as water leakage, electric shock, or fire. If the indoor unit is installed in disregard
of the instructions in the Installation Manual, it will void the manufacturer’s warranty.
Do not turn ON the power until all work has been completed. Turning ON the power
before the work is completed can cause serious accidents such as electric shock or
fire.
The installation must be carried out in compliance with regulations in force in the place
of installation and the installation instructions of the manufacturer.
This unit is part of a set constituting an air conditioner. It must not be installed alone or
with non-authorized by the manufacturer.
Always use a separate power supply line protected by a circuit breaker operating on all
wires with a distance between contact of 3mm for this unit.
The unit must be correctly earthed (grounded) and the supply line must be equipped with
a differential breaker in order to protect the persons.
The units are not explosion proof and therefore should not be installed in explosive
atmosphere.
Never touch electrical components immediately after the power supply has been turned
off. Electric shock may occur. After turning off the power, always wait 5 minutes before
touching electrical components.
This unit contains no user-serviceable parts. Always consult authorized service
personnel to repairs.
When moving, consult authorized service personnel for disconnection and installation of
the unit.
2. ABOUT THIS PRODUCT
2.1. Precautions for using R410A refrigerant
WARNING
Do not introduce any substance other than the prescribed refrigerant into the
refrigeration cycle. If air enters the refrigeration cycle, the pressure in the refrigeration
cycle will become abnormally high and cause the piping to rupture.
If there is a refrigerant leak, make sure that it does not exceed the concentration limit.
If a refrigerant leak exceeds the concentration limit, it can lead to accidents such as
oxygen starvation.
Do not touch refrigerant that has leaked from the refrigerant pipe connections or other
area. Touching the refrigerant directly can cause frostbite.
If a refrigerant leak occurs during operation, immediately vacate the premises and
thoroughly ventilate the area. If the refrigerant comes in contact with a flame, it
produces a toxic gas.
2.2. Special tool for R410A
WARNING
To install a unit that uses R410A refrigerant, use dedicated tools and piping materials
that have been manufactured specifically for R410A use. Because the pressure
of R410A refrigerant is approximately 1.6 times higher than the R22, failure to
use dedicated piping material or improper installation can cause rupture or injury.
Furthermore, it can cause serious accidents such as water leakage, electric shock, or
fire.
Tool name
Gauge manifold
Charging hose
To increase pressure resistance, the hose material and
base size were changed.
(The charging port thread diameter for R410A is 1/2 UNF
20 threads per inch.)
Vacuum pump
A conventional vacuum pump can be used by installing a
vacuum pump adapter.
Be sure that the pump oil does not backflow into the
system. Use one capable for vacuum suction of –100.7
kPa (5 Torr, –755 mmHg).
Gas leakage detector
Special gas leakage detector for R410A refrigerant.
If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant
comes in contact with a flame, it produces a toxic gas.
Installation work must be performed in accordance with national wiring standards by
authorized personnel only.
Except for EMERGENCY, never turn off main as well as sub breaker of the indoor units
during operation. It will cause compressor failure as well as water leakage. First, stop
the indoor unit by operating the control unit, converter or external input device and then
cut the breaker.
Make sure to operate through the control unit, converter or external input device.
When the breaker is designed, locate it at a place where the users cannot start and
stop in the daily work.
Changes
The pressure in the refrigerant system is extremely high
and cannot be measured with a conventional gauge.
To prevent erroneous mixing of other refrigerants,
the diameter of each port has been changed. It is
recommended to use a gauge manifold with a high
pressure display range of –0.1 to 5.3 MPa and a low
pressure display range of –0.1 to 3.8 MPa.
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2.3. Accessories
2.4. Optional parts
The following options are available.
WARNING
Description
For installation purposes, be sure to use the parts supplied by the manufacturer or
other prescribed parts. The use of non-prescribed parts can cause serious accidents
such as the unit falling, water leakage, electric shock, or fire.
The following installation parts are furnished. Use them as required.
UTY-XWZXZC
UTY-XWZXZB
External connect kit
Keep the Installation Manual in a safe place and do not discard any other accessories
until the installation work has been completed.
Name and Shape
Q’ty
For fixing the connection pipe (Large
and Small)
4
2
Coupler heat insulation
(Small)
Coupler heat insulation
(Large)
For indoor side pipe joint (Small)
For indoor side pipe joint (Large)
1
For switching static pressure
1
Special nut A
(Large flange)
Select installation locations that can properly support the weight of the indoor unit.
Install the units securely so that they do not topple or fall.
CAUTION
1
Relay wire
3.1. Selecting an installation location
Decide the mounting position together with the customer as follows.
WARNING
For transmission and remote
controller cable binding
Cable tie (Medium)
3. INSTALLATION WORK
Correct initial installation location is important because it is difficult to move unit after it is
installed.
1
Cable tie (Large)
UTY-XSZX
UTB-*WC
Application
For output function
(Output terminal / CNB01)
For control input function
(Apply voltage terminal / CNA01)
For control input function
(Dry contact terminal / CNA02)
For forced thermostat off function
(Apply voltage terminal / CNA03)
For forced thermostat off function
(Dry contact terminal / CNA04)
Room temperature sensor
For the wireless remote controller.
When installing, please refer to the installation manual of each optional part.
(This book)
Installation manual
UTY-XWZXZE
Remote sensor
IR receiver unit
1
UTY-XWZXZD
UTY-XWZXZ7
Application
Operating manual
Model
For suspending the indoor unit from
ceiling
4
Do not install the indoor unit in the following areas:
• Area with high salt content, such as at the seaside. It will deteriorate metal parts,
causing the parts to fail or the unit to leak water.
• Area filled with mineral oil or containing a large amount of splashed oil or steam,
such as a kitchen. It will deteriorate plastic parts, causing the parts to fail or the unit
to leak water.
• Area that generates substances that adversely affect the equipment, such as sulfuric
gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed joints to
corrode, which can cause refrigerant leakage.
• Area that can cause combustible gas to leak, contains suspended carbon fibers or
flammable dust, or volatile inflammables such as paint thinner or gasoline. If gas
leaks and settles around the unit, it can cause a fire.
• Area where animals may urinate on the unit or ammonia may be generated.
Do not use the unit for special purposes, such as storing food, raising animals,
growing plants, or preserving precision devices or art objects.
It can degrade the quality of the preserved or stored objects.
Do not install where there is the danger of combustible gas leakage.
Do not install the unit near a source of heat, steam, or flammable gas.
Special nut B
(Small flange)
Install the unit where drainage does not cause any trouble.
4
Install the indoor unit, power supply cable, transmission cable, and remote controller
cable at least 1 m away from a television or radio receivers. The purpose of this is to
prevent TV reception interference or radio noise. (Even if they are installed more than
1 m apart, you could still receive noise under some signal conditions.)
8
If children under 10 years old may approach the unit, take preventive measures so
that they cannot reach the unit.
Washer
Drain hose
(Large)
1
For installing drain pipe
(For main drain port)
For installing drain pipe
(For safety drain port)
Drain hose
(Small)
1
Hose band
(Large)
For installing drain hose (Large)
1
Hose band
(Small)
Take precautions to prevent the unit from falling.
(1) Install the indoor unit on a place having a sufficient strength so that it withstands
against the weight of the indoor unit.
(2) The inlet and outlet ports should not be obstructed; the air should be able to blow all
over the room.
(3) Leave the space required to service the air conditioner.
(4) Install the unit where connection to the outdoor unit (or RB unit) is easy.
(5) Install the unit where the connection pipe can be easily installed.
(6) Install the unit where the drain pipe can be easily installed.
(7) Install the unit where noise and vibrations are not amplified.
(8) Take servicing, etc., into consideration and leave the spaces. Also install the unit
where the filter can be removed.
(9) Do not install the unit where it will be exposed to direct sunlight.
For installing drain hose (Small)
1
For installing drain hose
Drain hose insulation
2
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3.3.2. Installing hangers
3.2. Installation dimension
Suspend the indoor unit by referring to the following figures.
1,550 mm
1,410 mm
450 mm
68 mm
AIR
700 mm
655 mm
Inlet port
Service access
Service space
Maintenance conditions
• In case of performing maintenance from the top side of the unit.
(recommended)
500 or more
• In case of performing maintenance from the bottom of the device.
• When exchanging motor and heat exchanger parts, remove part of
the ceiling shown below necessary service space.
20 or more
Outlet port
AIR
Special nut A
(Accessories)
Hanging bolt M10
(locally purchased)
Washer
(Accessories)
Service space and service access
: Service access
: Service space
Air
Unit: mm
200 or
more
[Top view]
AIR
A (mm)
300
Hanger
Indoor unit
80 or
more
Special nut B
(Accessories)
Air
30 or more
CAUTION
Fasten the unit securely with special nuts A and B.
200
or less
1550
500
or more
3.3.3. Leveling
Use the procedure in the following figure to adjust the levelness.
3.3. Installing the unit
Level
WARNING
Install the air conditioner in a location which can withstand a load of at least 5 times
the weight of the main unit and which will not amplify sound or vibration. If the
installation location is not strong enough, the indoor unit may fall and cause injuries.
CAUTION
B
A
Confirm the directions of the air intake and outlet before installing the unit.
The unit takes in air from the evaporator side, and expels it from the fan side.
(Front)
3.3.1. Conveyance method
Level
Packing hardware (4 pieces)
B
A
(Side)
The side of the unit that holds the drain port A should be slightly lower than the opposite
side of the unit B. The slant should allow from 0 to 20 mm of difference between A and B.
Leave the packing materials on until the unit is at the installation site.
Remove the packing hardware and dispose of it.
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3.3.4. Mounting the duct
Follow the procedure in the following figure to install the ducts.
4. PIPE INSTALLATION
CAUTION
1,251 mm
 20 mm
370 mm 15 mm
Inlet port flange
Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant R410A models. Also, when storing the piping, securely seal the openings
by pinching, taping, etc.
While welding the pipes, be sure to blow dry nitrogen gas through them.
4.1. Selecting the pipe material
75 mm
15 mm
 25 mm
35 mm
350 mm
CAUTION
Outlet port flange
7 × 150 pitch=1,050 mm
1,199 mm
2 × 160 pitch=320 mm
 Spacing between flange and drain pan.
CAUTION
To prevent people from touching the parts inside the unit, be sure to install grilles on
the inlet and outlet ports. The grilles must be designed in such a way that cannot be
removed without tools.
Set the external static pressure between 100 and 300 Pa.
If an intake duct is installed, take care not to damage the temperature sensor (the
temperature sensor is attached to the intake port flange).
Install the air inlet grille for air circulation. The correct temperature can not be
detected.
Do not use existing pipes from another refrigeration system or refrigerant.
Use pipes that have clean external and internal sides without any contamination which
may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or water.
It is necessary to use seamless copper pipes.
Material : Phosphor deoxidized seamless copper pipes
It is desirable that the amount of residual oil is less than 40 mg/10 m.
Do not use copper pipes that have a collapsed, deformed, or discolored portion
(especially on the interior surface). Otherwise, the expansion valve or capillary tube
may become blocked with contaminants.
Improper pipe selection will degrade performance. As an air conditioner using R410A
incurs pressure higher than when using conventional (R22) refrigerant, it is necessary
to choose adequate materials.
• Thicknesses of copper pipes used with R410A are as shown in the table.
• Never use copper pipes thinner than those indicated in the table even if they are
available on the market.
Thicknesses of Annealed Copper Pipes (R410A)
Unit
Duct
(locally purchased)
Outlet grille
(locally purchased)
(Room)
Inlet grille
(locally purchased)
Pipe outside diameter [mm (in)]
Thickness [mm]
6.35 (1/4)
0.80
9.52 (3/8)
0.80
12.70 (1/2)
0.80
15.88 (5/8)
1.00
19.05 (3/4)
1.20
22.22 (7/8)
1.00
Material
COPPER JIS H3300
C1220T-O or equivalent
COPPER JIS H3300
C1220T-H or equivalent
4.2. Pipe requirement
CAUTION
Refer to the Installation Manual of the outdoor unit for description of the length of
connecting pipe or for difference of its elevation.
• Use pipe with water-resistant heat insulation.
CAUTION
Install heat insulation around both the gas and liquid pipes. Failure to do so may
cause water leaks.
Use heat insulation with heat resistance above 120 °C. (Reverse cycle model only)
In addition, if the humidity level at the installation location of the refrigerant piping is
expected to exceed 70 %, install heat insulation around the refrigerant piping. If the
expected humidity level is 70 to 80 %, use heat insulation that is 15 mm or thicker and
if the expected humidity exceeds 80 %, use heat insulation that is 20 mm or thicker. If
heat insulation is used that is not as thick as specified, condensation may form on the
surface of the insulation. In addition, use heat insulation with heat conductivity of
0.045 W/(m·K) or less (at 20 °C).
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4.3. Brazing connection (pipe connection)
WARNING
4.3.1. Bending pipes
• The pipes are shaped by your hands or pipe bender. Be careful not to collapse them.
• Do not bend the pipes in an angle more than 90°.
• When pipes are repeatedly bend or stretched, the material will harden, making it difficult
to bend or stretch them any more. Do not bend or stretch the pipes more than 3 times.
Be sure to use wet cloth, etc., to protect the pipe rubber, pipe heat insulation, and
the heat insulation of the safety drain pan as shown below. Because these parts are
extremely flammable, they can cause a fire if they are not properly protected.
The heat exchanger contains a thermistor.
Do not expose the thermistor to the flame.
CAUTION
Protect these areas with wet cloth, etc.
To prevent breaking of the pipe, avoid sharp bends.
If the pipe is bent repeatedly at the same place, it will break.
4.3.2. Pipe connection
• The gas and liquid pipes connections must be brazed.
• Be sure to braze them before performing any wiring work or installing the drain pipe.
Outer diameter of pipe
Connection Pipe (Liquid)
12.70 mm
Connection Pipe (Gas)
22.22 mm
Rear Panel
Control Box
Pipe heat insulation
Pipe rubber
Connection Pipe
(Gas)
Maintenance Panel
Completely cover the pipe rubber
and pipe heat insulation with wet
cloth, etc., to prevent them from
burning.
Brazing
Connection Pipe
(Liquid)
Safety drain pan
Pipe rubber
Pipe heat insulation
Do not expose the unit (control box, rear panel, maintenance panel, etc.) and the inlet
grille to the flame. The exposure of these parts to the flame will adversely affect their
appearance and functions or cause a fire.
CAUTION
If air or another type of refrigerant enters the refrigeration cycle, the internal pressure
in the refrigeration cycle will become abnormally high and prevent the unit from
exerting its full performance.
Apply nitrogen gas while
brazing the pipes. Nitrogen
gas pressure:
0.02 MPa (= pressure felt
sufficiently on the back of
your hand)
Pressure regulating valve
Cap
Nitrogen gas
Brazing area
If a pipe is brazed without applying nitrogen gas, it will create an oxidation film.
This can degrade performance or damage the parts in the unit (such as the
compressor or valves).
Do not use flux to braze pipes. If the flux is the chlorine type, it will cause the pipes to
corrode. Furthermore, if the flux contains fluoride, it will adversely affect the refrigerant
pipe system such as by degrading the refrigerant oil.
For brazing material, use phosphor copper that does not require flux.
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4.4. Installing heat insulation
• Install the coupler heat insulation after completing the refrigerant leak check (for details,
refer to the Installation Manual for the outdoor unit).
• There should be no gaps between the insulation and the product.
No gap
Accessories
Hose band
(Large)
Hose band
(Small)
Drain hose
(Large)
Drain hose
(Small)
For main drain port
For safety drain port
Drain hose
insulation
Drain hose
insulation
Ensure there is no space
Cable tie (Large)
(Accessories)
Hose Band
(Accessories)
Coupler heat
insulation (Large)
(Accessories)
Soft PVC side
Drain pan
No gap
Coupler heat
insulation (Small)
(Accessories)
Drain hose
10 to 15 mm (Accessories)
Applying
area of
adhesive
Hard PVC side
Joint pipe
(locally purchased)
Cable tie (Large)
(Accessories)
Drain pipe (VP25)
(locally purchased)
5. INSTALLING DRAIN PIPES
4 mm or less
• Use general hard polyvinyl chloride pipe (VP25) and connect it with adhesive (polyvinyl
chloride) so that there is no leakage.
Wrap the Drain hose insulation around the drain hose connection.
• The position of the installed drain pipe should have a downward gradient of 1/100 or
more.
Drain hose insulation
(Accessories)
• To prevent the pipe from freezing, use a heat insulation material as needed.
Position of drain piping
Drain pan
200 mm
Drain hose
100mm
427 mm
Hose opening view
Wind the attached heat insulation
around the hose band. Make sure
the alignment is on top.
Safety drain port
40 mm
After installing the Drain hose, check if the drainage is smooth.
Downward gradient
2.5 to 5.0 mm
403 mm
PROHIBITED
GOOD
Drain port
O.D.
32 mm (VP25)
• This product has drain ports in 2 locations. Follow the procedure in the figure to connect
drain hose and drain pipes to each of them.
Install the drain pipe
1 Main drain
On the main drain, provide 1 trap near the indoor unit.
Unit
Install the drain hose to the main and safety drain port
H1=100 mm (Approx.)
H2=50 to 100 mm
Drain pipe
H1
Working procedure
(1) Install the attached drain hose to the main and safety drain port of the body. Install
the hose band from the top of the hose within the graphic display area. Secure firmly
with the hose band.
(2) Use vinyl adhesive agent to glue the drain piping (PVC pipe VP25) which is prepared
on site or piping socket. (Apply color adhesive agent evenly until the gauge line and
seal)
(3) Check the drainage.
(4) Install the heat insulation.
(5) Use the attached heat insulation to insulate the drain port and band parts of the body.
Trap
H2
Drain pipe
• For main drain port
• For safety drain port
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2 Safety drain
There is no need to provide a trap for the safety drain. If the safety drain is connected
to the main drain, make the connection below the main trap.
Unit
Main
Do not connect power supply cables to the transmission or remote controller terminals,
as this will damage the product.
Drain pipe
Safety
CAUTION
Earth (Ground) the unit.
Do not connect the earth (ground) cable to a gas pipe, water pipe, lightning rod, or a
telephone earth (ground) cable.
Improper earthing (grounding) may cause electric shock.
Never bundle the power supply cable and transmission cable, remote controller cable
together.
Separate these cable by 50 mm or more.
Bundling these cables together will cause miss operation or breakdown.
When handling PCB, static electricity charged in the body may cause malfunction of
the PCB. Follow the cautions below:
• Establish an earth (ground) for the indoor and outdoor units and peripheral devices.
• Cut power (breaker) off.
• Touch metal part of the indoor unit for more than 10 seconds to discharge static
electricity charged in the body.
• Do not touch terminals of parts and patterns implemented on PCB.
• Make sure that drain pipe is installed without rises.
• Do not perform air bleeding.
PROHIBITED
Rise
Air bleeding
6.1. Electrical requirement
Voltage rating
Operating range
Rise
CAUTION
Be sure to properly insulate the drain pipes.
Make sure the drain water is properly drained.
6. ELECTRICAL WIRING
WARNING
Electrical work must be performed in accordance with this Manual by a person
certified under the national or regional regulations. Be sure to use a dedicated circuit
for the unit. An insufficient power supply circuit or improperly performed electrical work
can cause serious accidents such as electric shock or fire.
Before starting work, check that power is not being supplied to the all units.
Use the included connection cables and power cables or ones specified by the
manufacturer. Improper connections, insufficient insulation, or exceeding the allowable
current can cause electric shock or fire.
For wiring, use the prescribed type of cables, connect them securely, making sure
that there are no external forces of the cables applied to the terminal connections.
Improperly connected or secured cables can cause serious accidents such as
overheating the terminals, electric shock, or fire.
Do not modify the power cables, use extension cables, or use any branches in the
wiring. Improper connections, insufficient insulation, or exceeding the allowable
current can cause electric shock or fire.
Match the terminal board numbers and connection cable colors with those of the
outdoor unit (or RB unit). Erroneous wiring may cause burning of the electric parts.
230 V
198 to 264 V (50 Hz)
• Select the power cable type and size in accordance with relevant local and national
regulations.
• Specifications for local wiring power cord and branch wiring are in compliance with local
code.
• Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the
wire diameter when the wire length is long.
Breaker should be installed at every refrigerant system. Do not use a breaker in a different
refrigerant system.
Refer to the table for the breaker specifications of each installation condition. Perform
the power crossover wiring within the range of the same refrigerant system. When the
crossover wiring is done, make a connection for indoor units to satisfy conditions A and B
below.
A. Current breaker requirements
Model
MCA
ARXC72GATH
5.55 A
ARXC90GATH
6.55 A
MFA
20A
MCA: Minimum Circuit Ampacity
MFA: Main Fuse Ampacity
When the power crossover wiring is done, make it so that the total of the MCA of the
connected RB units and indoor units does not exceed the 15 A. For RB unit MCA, refer to
the RB unit installation manual.
If the capacity of connected RB units and indoor units exceeds the upper limit, either add
breakers or use a breaker with a greater capacity.
B. Earth leakage breaker requirements
Breaker capacity
* Maximum connectable “indoor units”
or “indoor units + RB units”
30 mA, 0.1 sec or less
44 or less **
100 mA, 0.1 sec or less
45 to 148
Securely connect the connection cables to the terminal board. In addition, secure the
cables with wiring holders. Improper connections, either in the wiring or at the ends of
the wiring, can cause a malfunction, electric shock, or fire.
* Heat pump type: indoor units, Heat recovery type: indoor units and RB units.
** If the total number of units connected to the breaker exceeds 44, either add a 30mA
breaker, or use breakers with a greater capacity.
Always fasten the outside covering of the connection cable with the cable clamp. (If
the insulator is chafed, electric discharge may occur.)
6.1.1. Cable specifications
Securely install the electrical box cover on the unit. An improperly installed electrical
box cover can cause serious accidents such as electric shock or fire through exposure
to dust or water.
Install sleeves into any holes made in the walls for wiring. Otherwise, a short circuit
could result.
Install an earth leakage breaker. In addition, install the earth leakage breaker so that
the entire AC main power supply is cut off at the same time. Otherwise, electric shock
or fire could result.
Always connect the earth (ground) cable.
Improper earthing (grounding) work can cause electric shocks.
Install the remote controller cables so as not to be direct touched with your hand.
Follow the specifications below for the power supply, transmission and remote controller
cable.
Recommended
cable size (mm2)
Cable type
Remark
Power supply cable
2.5
Type245 IEC57
or equivalent
2 Cable + earth (ground)
Transmission cable
0.33
LONWORKS
compatible cable
22 AWG LEVEL 4 (NEMA)
non-polar 2 core, twisted pair
solid core diameter 0.65 mm
0.33 to 1.25
Sheathed PVC cable*
Non-polar 2 core, twisted pair
0.33
Sheathed PVC cable*
Polar 3 core
Remote controller
cable (2-wire type)
Remote controller
cable (3-wire type)
*: Use shielded cable in accordance with local rules for remote controller cable.
Perform wiring work in accordance with standards so that the air conditioner can be
operated safely and positively.
Connect the connection cable firmly to the terminal board. Imperfect installation may
cause a fire.
If the supply cable is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
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B. For strand wiring
6.2. Wiring method
Example
Outdoor unit or RB unit *1
Transmission
Indoor unit
Indoor unit
Remote
control
Transmission
Power supply
*2
*2
*3
Breaker
Breaker
*3
Indoor unit
*2
*3
(1) Use ring terminals with insulating sleeves as shown in the figure below to connect to
the terminal block.
(2) Securely clamp the ring terminals to the cables using an appropriate tool so that the
cables do not come loose.
(3) Use the specified cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(4) Use an appropriate screwdriver to tighten the terminal screws. Do not use a screwdriver that is too small, otherwise, the screw heads may be damaged and prevent the
screws from being properly tightened.
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
(6) See the table for the terminal screw tightening torques.
(7) Please do not fix 2 power supply cables with 1 screw.
Ring terminal
Strip 10 mm
Breaker
Sleeve
Power supply
Remote controller
Remote controller
Remote
(Master)
(Slave)
controller
*1: When connecting to the Heat Recovery System, refer to the installation
manual of the RB unit.
*2: Earth (Ground) the remote controller if it has an earth (ground) cable.
*3: When connecting the 2-wire type remote controller, Y3 is not used.
Screw with special
washer
Cable
Screw with
special washer
Ring terminal
Ring
terminal
Terminal block
(Crossover wiring of power supply)
Power supply
Indoor unit
Cable
Indoor unit
Power supply
Indoor unit
Power supply
Pull box
Breaker
WARNING
Use ring terminals and tighten the terminal screws to the specified torques, otherwise,
abnormal overheating may be produced and possibly cause heavy damage inside the
unit.
Pull box
Tightening torque
Power supply
* Earth (Ground) the remote controller if it has an earth (ground) wire.
Connect the earth (ground) wire of the remote controller to the earth (ground) terminal of
transmission.
M4 screw
(Power supply/L, N, GND)
1.2 to 1.8 N·m
(12 to 18 kgf·cm)
6.3.2. Transmission and Remote controller cable
Transmission cable
25 mm
6.3. Unit wiring
• Before attaching the cable to terminal block.
6.3.1. Power supply cable
Shielded cable
(no film)
Adjust the length of power supply cable to avoid excessive tension with referring figure
below.
35 mm
Remote controller cable
For 3-wire type
Power supply cable
For 2-wire type
25 mm
25 mm
25 mm
Earth (Ground)
cable
35 mm
• Connect remote controller and transmission cables as shown in Fig. B.
A. For solid core wiring
(1) To connect the electrical terminal, follow the below diagram and connect after looping
it around the end of the cable.
(2) Use the specified cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(3) Use an appropriate screwdriver to tighten the terminal screws. Do not use a
screwdriver that is too small, otherwise, the screw heads may be damaged and
prevent the screws from being properly tightened.
(4) Do not tighten the terminal screws too much, otherwise, the screws may break.
(5) See the table for the terminal screw tightening torques.
(6) Please do not fix 2 power supply cables with 1 screw.
• When the 2 cables are attached.
Fig. B
GOOD
PROHIBITED
Strip 25 mm
Different diameter
Connect to 1 side
Loop
WARNING
Cable
Screw with
special washer
Screw with
special washer
Tighten the terminal screws to the specified torques, otherwise, abnormal overheating
may be produced and possibly cause heavy damage inside the unit.
Cable end (Loop)
Cable end
(Loop)
Terminal block
Cable
WARNING
When using solid core cables, do not use the ring terminal. If you use the solid core
cables with the ring terminal, the ring terminal’s pressure bonding may malfunction
and cause the cables to abnormally heat up.
Tightening torque
M3 screw (Transmission/X1, X2)
(Remote controller/ Y1, Y2, Y3)
0.5 to 0.6 N·m
(5 to 6 kgf·cm)
CAUTION
To peel the film from the lead cable, use a dedicated tool that will not damage the
conductor cable.
When installing a screw on the terminal block, do not cut the cable by overtightening
the screw. On the other hand, an undertightened screw can cause faulty contact, which
will lead to a communication failure.
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6.4. Connection of wiring
6.5. Airflow changing
(1) Remove the control box cover and install each connection cable.
When apply external static pressure less than 150Pa (ARXC72) or 200Pa (ARXC90) on
the model, please follow the methods below to connect relay wire.
(1) Disconnect the PCB wire connector from Fan motor wire connector.
(2) Connect the Fan motor wire with Relay wire.
(3) Connect the PCB wire with Relay wire.
External Static
Pressure
Loosen the screws.
(2 locations)
(2) After wiring is complete, clamp the remote controller cable, connection cable and
power supply cable with cable clamp.
CAUTION
ARXC72 :
50 to 150 Pa
ARXC90 :
100 to 200 Pa
Relay wire
Remark
Accessories
(Standard
static pressure)
1 PINK
2 PURPLE
3 BLUE
• Layout of circuit board
High Static Pressure mode : 150 to 300 Pa (ARXC72)
200 to 300 Pa (ARXC90)
(Factory setting)
When switching the DIP switch (SW1), be sure to turn off the power supply to the
indoor unit. Otherwise, the PC board of the indoor unit may be damaged.
PCB wire
Cable tie (Medium)
(Accessories)
Y1,Y2,Y3: Remote controller cable
X1, X2: Transmission cable
Cable clamp
L, N: Power supply cable
Earth (ground)
DIP switch
(SW1)
For 2-wire type
Y1:Non-polar
Connect the
remote controller Y2:Non-polar
cable
Y3:Do not connect *1
Set the DIP switch 2WIRE
(SW1)
(Factory setting)
For 3-wire type
Y1:Red
Y2:White
Y3:Black
Fan motor wire
Standard Static Pressure mode : 50 to 150 Pa (ARXC72)
100 to 200 Pa (ARXC90)
(Change setting)
PCB wire
3WIRE
*1: If you connect the remote controller cable to the terminal
Y3, 2-wire type remote controller does not work.
CAUTION
When installing a screw on the terminal board, do not cut the cable by overtightening
the screw. On the other hand, an undertightened screw can cause faulty contact,
which will lead to a communication failure.
(3) Attach the control box cover.
Relay wire
Fan motor wire
Be sure to connect the wire with connector.
If connection is improper, it will not operate properly.
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● Dry contact terminal ([CNA02], [CNA04])
6.6. External input and external output (Optional parts)
When a power supply is unnecessary at the input device you want to connect, use the Dry
contact terminal ([CNA02], [CNA04]).
Controller PCB
*c
Ch 1
SW1
SW2
SW3
SW4
DIP switch
(SET 2)
CNA02
*c
Ch 2
GND
*c
Ch 3
Dry contact
terminal
CNA04
connected unit
*c Select very low current use contacts (usable at DC12V, DC1mA or less).
*d The wiring is different from Apply voltage terminals. Be sufficiently careful when wiring.
(CNA04)
(CNA02)
When connected to Dry contact terminals of multiple indoor units with a connected unit,
insulate each indoor unit with relay, etc. as shown on below example.
P.C.B
K1
(CNA01)
Apply voltage terminal
Indoor unit
Output terminal
(CNB01)
(CNA03)
*d
K4
CNA02
P.C.B
K2
K5
CNA02
P.C.B
K3
Input select
Input device 1
Use either one of these types of terminal according to the application. (Both types of
terminals cannot be used simultaneously.)
K6
CNA02
Input device 2
● Apply voltage terminal ([CNA01], [CNA03])
When a power supply must be provided at the input device you want to connect, use the
Apply voltage terminal ([CNA01], [CNA03]).
Input
device 1
DC power supply *1
12 to 24V
P.C.B
Input
device 2
Input
device 3
K1 - K6: Relay
(Device for DC Current)
NOTE :
When connected to multiple indoor units directly, it will cause breakdown.
Load
resistance
*a
CNA01
Operation behavior
The input signal type can be selected.
It is switched by DIP switch on the indoor unit PCB.
Load
resistance
*a
DIP switch [Set 2 SW2]
Load
resistance
*a
CNA03
Pulse
Input signal type
OFF (Factory setting)
Edge
ON
Pulse
The width of pulse
must be longer than
200msec.
● When function setting is “Operation/Stop” mode.
[In the case of “Edge” input]
Connector
connected unit
Connector
P.C.B
Indoor unit
CNA01
CNA01
ON → OFF
Stop
Input signal
Command
Ch1
OFF → ON
Operation
Ch2
OFF → ON
Stop
* The last command has priority.
* The indoor units within the same remote controller group operates in the same mode.
● When function setting is “Emergency stop” mode.
[In the case of “Edge” input]
Connector
Input signal
Command
OFF → ON
Emergency stop
ON → OFF
Normal
Ch1 of CNA01 or CNA02
[In the case of “Pulse” input]
P.C.B
CNA01
Indoor unit
connected unit
Operation
CNA01 or CNA02
Indoor unit
P.C.B
Load
resistance
Load
resistance
Command
OFF → ON
[In the case of “Pulse” input]
When connected to Apply voltage terminals of multiple indoor units with a connected unit, be sure
to make a branch outside the indoor unit using a pull box, etc. as shown on below example.
DC power supply
12 to 24V
Input signal
Ch1 of CNA01 or CNA02
*1 Make the power supply DC12 to 24V. Select a power supply capacity with an ample
surplus for the connected load.
Do not impress a voltage exceeding 24V across pins 1-2, and 1-3.
*a The allowable current is DC 5mA to 10mA. (Recommended: DC5mA)
Provide a load resistance such that the current becomes DC10mA or less.
Select very low current use contacts (usable at DC12V, DC1mA or less).
*b The polarity is [+] for pin 1 and [-] for pin 2 and 3. Connect correctly.
Input
device 1
Edge
● Input signal type
*b
Input
device 2
Indoor unit
• Indoor unit can be Operation/Stop, Emergency stop or Forced stop by using indoor unit
PCB CNA01 or CNA02.
• “Operation/Stop” mode, “Emergency stop” mode or “Forced stop” mode can be selected
with function setting of indoor unit.
• Indoor unit can be Forced thermostat off by using indoor unit PCB CNA03 or CNA04.
• A twisted pair cable (22 AWG) should be used. Maximum length of cable is 150 m.
• Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
• The wire connection should be separate from the power cable line.
Power supply for relay
(1) External input
Indoor unit
OFF
ON
P.C.B
Connector
Input signal
Command
Ch1
OFF → ON
Emergency stop
Ch2
OFF → ON
Normal
CNA01 or CNA02
* All indoor units of same refrigerant system stops when Emergency stop operates.
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(3) Connection methods
● When function setting is “Forced stop” mode.
[In the case of “Edge” input]
Connector
• Wire modification
Input signal
Command
OFF → ON
Forced stop
ON → OFF
Normal
Remove insulation from wire attached to wire kit connector.
Remove insulation from locally purchased cable. Use crimp type insulated butt connector
to join field cable and wire kit wire.
Connect the wire with connecting wire with solder.
Ch1 of CNA01 or CNA02
IMPORTANT: Be sure to insulate the connection between the wires.
[In the case of “Pulse” input]
Locally purchased
Connector
Input signal
Command
Ch1
OFF → ON
Forced stop
Ch2
OFF → ON
Normal
Option parts
External input/output wire
CNA01 or CNA02
Solder and insulate the connected parts.
• Connection terminals and wiring arrangement
* When the forced stop is triggered, indoor unit stops and Operation/Stop operation by a
remote controller is restricted.
* When forced stop function is used with forming a remote controller group, connect the
same equipment to each indoor unit within the group.
In following figure, all the possible connectors are connected for description.
In actual installation, you cannot connect all the connectors at once.
Controller PCB
• Selection method of functions
“Operation/Stop” mode or “Emergency stop” mode, “Forced stop” mode can be selected
with function setting of indoor unit.
● Forced thermostat off function
[“Edge” input only]
Connector
Input signal
Command
OFF → ON
Thermostat off
ON → OFF
Normal
Ch3 of CNA03 or CNA04
(2) External output
• A twisted pair cable (22AWG) should be used. Maximum length of cable is 25m.
• Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
• Output voltage: Hi DC12V±2V, Lo 0V.
• Permissible current: 50mA
Cable tie
(locally purchased)
Output select
● When indicator etc. are connected directly
P.C.B
Operation
indicator
Error
indicator
CNB
01
Indoor unit Fan
status indicator
connected unit
● When connecting with unit equipped with a power supply
P.C.B
Connected
device 1
Connected
device 2
CNB
01
Connected
device 3
connected unit
Relay (locally purchased)
Operation behavior
Connector
External output1
Pins 1-2
CNB01
External output2
Pins 1-3
External output3
Pins 1-4
Output voltage
0V
DC 12 V
0V
DC 12 V
0V
DC 12 V
Status
Stop
Operation
Normal
Error
Indoor unit fan stop
Indoor unit fan operation
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6.7. Remote sensor (Optional parts)
6.8. IR receiver unit (Optional parts)
• For the installation method, please refer to the INSTALLATION MANUAL of remote
sensor.
• For the installation method, please refer to the INSTALLATION MANUAL of IR receiver
unit.
Connection methods
Connection methods
• Connection terminals
• Connection terminals
Controller PCB
Controller PCB
IR receiver
unit terminal
(CN18)
Remote sensor
terminal (CN8)
• Wiring arrangement
• Wiring arrangement
Controller PCB
Core
Cable tie
(locally purchased)
Clamps
Controller PCB
Cable tie
(locally purchased)
• Remove the existing connector and replace it with the remote sensor connector (ensure
that the correct connector is used).
• The original connector should be insulated to ensure that it does not come into contact
with other electrical circuitry.
• Use conduit hole when external output cable is used.
Setting for room temperature correction
When a remote sensor is connected, set the function setting of indoor unit as indicated
below.
• Function Number “30”:
Set the Setting Number to “00”. (Default)
• Function Number “31”:
Set the Setting Number to “02”.
* Refer to “7.3. Function setting” for details about Function
Number and Setting Number.
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Table A
7. FIELD SETTING
There are 3 methods for address setting by FIELD SETTING as follows.
Set by either of the methods.
Each setting method is described (1) to (3) below.
(1) IU AD, REF AD SW settings .............. This section (7.1. Setting the address)
(2) Remote controller settings ............... Refer to the wired or wireless remote controller
manual for detailed setting information. (Set IU
AD, REF AD SW to 0)
(3) Automatic address settings ............. Refer to the outdoor unit manual for detailed
setting information. (Set IU AD, REF AD SW to 0)
Rotary switch
setting
Address
REF AD SW
Refrigerant circuit
0
1
2
3
4
5
6
7
8
9
10
11
12
.
.
.
99
CAUTION
Be sure to turn OFF the power before performing the field setting.
7.1. Setting the address
Manual address setting method
• If the receiver unit is attached, the indoor unit address and the refrigerant circuit
address can also be set up through the wireless remote controller.
CAUTION
Use an insulated screwdriver to set the DIP switches.
× 10
×1
0
0
0
0
0
0
0
0
0
0
1
1
1
.
.
.
9
0
1
2
3
4
5
6
7
8
9
0
1
2
.
.
.
9
Rotary switch
setting
Address
IU AD SW
Indoor unit
× 10
×1
0
0
0
0
0
0
0
0
0
0
1
1
1
.
.
.
6
0
1
2
3
4
5
6
7
8
9
0
1
2
.
.
.
3
0
1
2
3
4
5
6
7
8
9
10
11
12
.
.
.
63
Do not set the indoor unit address (IU AD SW) at 64 to 99.
It may result in failure.
Rotary switch
Example: “0”
(3) Remote controller address
i) 3-wire type
Rotary switch (RC AD SW)...Factory setting “0”
When connecting multiple indoor units to 1 standard wired remote controller, set the
address at RC AD SW in sequence from 0.
Rotary switch
Example: “0”
Setting
Setting range
Remote controller
address
Type of switch
Setting
example 0
0 to 15
RC AD
Example
Setting
Setting
range
Indoor unit address
0 to 63
Type of switch
0 to 99
Indoor unit
Indoor unit
Indoor unit
RC AD SW
0
RC AD SW
1
RC AD SW
2
RC AD SW
3
Setting
example 2
IU AD × 10
Refrigerant circuit
address
If 4 indoor units are connected.
Indoor unit
IU AD × 1
Setting
example 63
REF AD × 10
REF AD × 1
(1) Indoor unit address
Rotary switch (IU AD × 1)...Factory setting “0”
Rotary switch (IU AD × 10)...Factory setting “0”
When connecting multiple indoor units to 1 refrigerant system, set the address at IU
AD SW as shown in the Table A.
(2) Refrigerant circuit address
Rotary switch (REF AD × 1)...Factory setting “0”
Rotary switch (REF AD × 10)...Factory setting “0”
In the case of multiple refrigerant systems, set REF AD SW as shown in the Table A
for each refrigerant system.
Set to the same refrigerant circuit address as the outdoor unit.
• If working in an environment where the wireless remote controller can be used, the
addresses can also be set using the remote controller.
• If setting the addresses using the wireless remote controller, set the indoor unit
address and refrigerant circuit address to “00”.
(For information on setting using the wireless remote controller.)
Remote
controller
RC AD SW
Address
0
0
1
1
2
2
3
3
4
4
5
5
6
6
7
7
RC AD SW
Address
8
8
9
9
A
10
B
11
C
12
D
13
E
14
F
15
ii) 2-wire type
Rotary switch (RC AD SW)...Factory setting “0”
Since the remote controller address settings are automatically configured, you do not
need to configure them.
If configuring manually, it is necessary to configure both the indoor unit and the remote
controller.
For details, please refer to the remote controller manual.
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7.3. Function setting
7.2. Custom code setting
• FUNCTION SETTING can be performed with the wired or wireless remote controller.
Selecting the custom code prevents the indoor unit mix-up.
(Up to 4 codes can be set.)
Perform the setting for both the indoor unit and the remote controller.
(The remote controller is optional equipment)
• Refer to the wired or wireless remote controller manual for detailed setting information.
Code change
Confusion
Indoor
unit
A
B
C
• Refer to “7.1. Setting the address” for indoor unit address and refrigerant circuit address
settings.
D
• Turn the power of the indoor unit ON before starting the setting.
Remote
controller
A
B
C
* Turning on the power to the indoor units initializes EEV, so make sure the piping air
tight test and vacuuming have been conducted before turning on the power.
* Also check again to make sure no wiring mistakes were made before turning on the
power.
D
Custom code setting for indoor unit
Function details
Set the DIP switch SET 3 SW1, SW2 referring to the Table B.
Function
Function
number
Filter indicator interval
11
Setting number
00 Standard
Default
○
01 Longer
02 Shorter
00 Enable
Filter indicator action
ON
Cool air
temperature
trigger
Dip switch “SET 3”
OFF
13
00 Standard
Table B
DIP switch SET3 SW1
DIP switch SET3 SW2
○
01 Adjust (1)
02 Adjust (2)
SW SW SW SW
1
2 3
4
Custom code
A (Factory setting)
B
OFF
ON
OFF
OFF
Enable or disable the filter indicator.
Setting 02 is for use with a central
remote controller.
Display only on
02 central remote
controller
30
C
OFF
ON
D
ON
ON
Heat air
temperature
trigger
31
○
01 Adjust (1)
02 Adjust (2)
03 Adjust (3)
00 Enable
Auto restart
40
01 Disable
00 Super low
Cool Air
Prevention
43
01
External
control
○
○
Follow the
setting on
01
the remote
controller
00 Start/Stop
○
Emergency
stop
46
02 Forced stop
00 All
Error report
target
47
Display only on
01 central remote
controller
Follow the
setting on
00
the remote
controller
Adjust the filter cleaning interval notification. If the notification is too early, change
to setting 01. If the notification is too late,
change to setting 02.
○
01 Disable
00 Standard
Details
○
Fan setting when
cooling
thermostat
OFF
49
(Forbidden)
60
00
○
(Forbidden)
61
00
○
(Forbidden)
62
00
○
○
01 Stop
Adjust the cool air trigger temperature. To
lower the trigger temperature, use setting
01. To raise the trigger temperature, use
setting 02.
Adjust the heat air trigger temperature.
To lower the trigger temperature by 6
degrees C, use setting 01. To lower the
trigger temperature by 4 degrees C, use
setting 02. To raise the trigger temperature, use setting 03.
Enable or disable automatic system
restart after a power outage.
Restrain the cold airflow with making
the airflow lower when starting
heating operation. To correspond to
the ventilation, set to 01.
Allow an external controller to start
or stop the system, or to perform an
emergency stop.
* If an emergency stop is performed from
an external controller, all refrigerant
systems will be disabled.
* If forced stop is set, indoor unit stops by
the input to the external input terminals,
and Start/Stop by a remote controller is
restricted.
Change the target for reporting errors.
Errors can either be reported in all
locations, or only on the central remote
controller.
When set to 01, the fan stops when
the thermostat is OFF in cooling
operation. Connection of the wired
remote controller (2-wire type or
3-wire type) and switching its thermistor are necessary.
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Error indications
8. TEST RUN
OPERATION
lamp (green)
8.1. Test run using Outdoor unit (PCB)
• Refer to the Installation Manual for the outdoor unit if the PCB for the outdoor unit is to
be used for the test run.
Wired Remote
Controller Error
FILTER
code
lamp (red)
TIMER lamp
(orange)
Error contents
(4)
(1)
Indoor unit room temp.
thermistor error
(4)
(2)
Indoor unit heat ex. temp.
thermistor error
• When the air conditioner is being test run, the OPERATION and TIMER flash slowly at
the same time.
(5)
(1)
Indoor unit fan motor 1
error
For details, please refer to the Manual of “IR Receiver Unit” or “Wired Remote Controller”.
(5)
(2)
Indoor unit coil
(expansion valve) error
(5)
(3)
Indoor unit water drain
abnormal
(9)
(15)
Outdoor unit
miscellaneous error
(13)
(1)
RB unit error
8.2. Test run using remote controller
• Refer to the Installation Manual for the remote controller to perform the test run using
the remote controller.
9. CHECK LIST
Pay special attention to the check items below when installing the indoor unit(s). After
installation is complete, be sure to check the following check items again.
Check items
If not performed correctly
Has the indoor unit been installed correctly?
Has there been a check for gas leaks
(refrigerant pipes)?
Has heat insulation work been completed?
Does water drain easily from the indoor
units?
Is the voltage of the power source the
same as that indicated on the label on
the indoor unit?
Are the wires and pipes all connected
completely?
Is the indoor unit earthed (grounded)?
Is the connection cable the specified
thickness?
Are the inlets and outlets free of any
obstacles?
Does start and stop air conditioner operation by remote controller or external
device?
After installation is completed, has the
proper operation and handling been
explained to the user?
Check
box
Vibration, noise, indoor unit may drop
No cooling, No heating
Display mode
Water leakage
Water leakage
Wired remote controller display
No operation, heat or burn damage
Error code
Short circuit
No operation, heat or burn damage
No cooling, No heating
UTY-RNRY / UTY-RNRG (2-wire type)
Error icon
No operation
Touch the [Status].
If you use a wired type remote controller, error codes will appear on the remote controller
display. If you use a wireless remote controller, the lamp on the photodetector unit will
output error codes by way of blinking patterns. See the lamp blinking patterns and error
codes in the table below.
OPERATION
lamp (green)
TIMER lamp
(orange)
UTY-RNKY / UTY-RNKG / UTY-RNKYT (3-wire type)
No operation, heat or burn damage
10.ERROR CODES
Error indications
: 0.5s ON / 0.5s OFF
: 0.1s ON / 0.1s OFF
( ) : Number of flashing
Touch the [Next Page] (or [previous page])
to switch to other indoor unit information.
Touch the [Error Information].
2-digit numbers are corresponding to
the error code in the preceding table.
For more information, refer to the installation manual of the remote controller.
Wired Remote
Controller Error
FILTER
code
lamp (red)
Error contents
UTY-RLRY / UTY-RLRG (2-wire type)
Error icon
(1)
(2)
Remote controller
communication error
(1)
(4)
Network communication
error
(1)
(6)
Peripheral unit
communication error
(2)
(6)
Indoor unit address
setting error
(2)
(9)
Connection unit number
error in wired remote
controller system
(3)
(1)
Indoor unit power supply
abnormal
(3)
(2)
Indoor unit main PCB
error
(3)
(10)
Indoor unit
communication circuit
(wired remote controller)
error
Error code
For more information, refer to the installation manual of the remote controller.
For details on marking the ERROR CODES, please refer to the Manual of “IR Receiver Unit” or
“Wired Remote Controller”.
En-15
9365748275-01_IM.indb Sec2:15
2016/1/7 9:16:24

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Key Features

  • Installs in a duct, concealed from view
  • Optional parts can be purchased for airflow changing, external inputs and outputs, remote sensors, and remote IR receivers.
  • Uses R410A refrigerant.
  • Capable of various function settings through field settings.
  • Easy access to unit wiring for maintenance or repair.

Related manuals

Frequently Answers and Questions

Can I install the unit myself?
No, this unit must be installed by qualified personnel with a capacity certificate for handling refrigerant fluids.
What type of refrigerant does the unit use?
R410A refrigerant.
Can I change the airflow of the unit?
Yes, with optional parts.
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