Fujitsu AUU30RGLX Installation Manual

Fujitsu AUU30RGLX Installation Manual
MANUEL D'INSTALLATION
UNITÉ INTÉRIEURE (Type cassette)
Pour le personnel de service agrée uniquement.
MANUAL DE INSTALACIÓN
UNIDAD INTERIOR (Tipo cassette)
Únicamente para personal de servicio autorizado.
Français
INDOOR UNIT (Cassette type)
For authorized service personnel only.
Español
INSTALLATION MANUAL
English
AIR CONDITIONER
PART No. 9381798056
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INSTALLATION MANUAL
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper installation or maintenance
service, including failure to follow the instructions in this document.
PART No. 9381798056
INDOOR UNIT (Cassette type)
Contents
1.2. SPECIAL PRECAUTIONS
1. SAFETY PRECAUTIONS ……………………………………………………………… 1
1.1. IMPORTANT! Please read before starting ……………………………………… 1
1.2. SPECIAL PRECAUTIONS ………………………………………………………… 1
2. ABOUT THIS PRODUCT ………………………………………………………………… 2
2.1. Precautions for using R410A refrigerant ………………………………………… 2
2.2. Special tools for R410A …………………………………………………………… 2
2.3. Accessories ………………………………………………………………………… 2
2.4. Optional parts ……………………………………………………………………… 2
3. GENERAL SPECIFICATION …………………………………………………………… 3
3.1. Selecting the pipe material ………………………………………………………… 3
3.2. Pipe requirement …………………………………………………………………… 3
3.3. Electrical requirement ……………………………………………………………… 3
4. INSTALLATION WORK ………………………………………………………………… 3
4.1. Selecting an installation location ………………………………………………… 3
4.2. Installation dimension ……………………………………………………………… 4
4.3. Installing the unit …………………………………………………………………… 4
4.4. Installing the drain pipe …………………………………………………………… 5
5. PIPE INSTALLATION …………………………………………………………………… 6
5.1. Flare connection (pipe connection) ……………………………………………… 6
5.2. Installing heat insulation …………………………………………………………… 7
6. ELECTRICAL WIRING …………………………………………………………………… 7
6.1. Wiring method ……………………………………………………………………… 7
6.2. Connection wiring ………………………………………………………………… 8
7. CASSETTE GRILLE INSTALLATION…………………………………………………… 8
8. REMOTE CONTROLLER INSTALLATION …………………………………………… 8
9. FUNCTION SETTING …………………………………………………………………… 9
9.1. Turning on the power ……………………………………………………………… 9
9.2. Setting method ……………………………………………………………………… 9
9.3. RC Sensor setting ………………………………………………………………… 9
9.4. Function Details …………………………………………………………………… 9
10. SPECIAL INSTALLATION METHODS ………………………………………………
10.1. Setting the address ………………………………………………………………
10.2. Setting the DIP switch ……………………………………………………………
10.3. Group control ……………………………………………………………………
10.4. Multiple remote control …………………………………………………………
11
11
11
11
11
11. OPTION AND OTHER CONNECTABLE DEVICES ………………………………… 12
11.1. Optional parts …………………………………………………………………… 12
11.2. External input and output ……………………………………………………… 12
12. CHECK LIST …………………………………………………………………………… 13
13. TEST RUN ……………………………………………………………………………… 13
14. CUSTOMER GUIDANCE ……………………………………………………………… 13
15. ERROR CODES ……………………………………………………………………… 13
Note: This manual describes how to install the air conditioner described above. Handling
and installation shall only be done by professionals as outlined in this manual.
• Installation must be performed in accordance with the requirement of NEC (National
Electrical Code) and CEC (Canadian Electrical Code) by authorized personnel only.
• All products are manufactured to metric units and tolerances. United States customary
units are provided for reference only. In cases where exact dimensions and tolerances
are required, always refer to metric units.
1. SAFETY PRECAUTIONS
1.1. IMPORTANT! Please read before starting
This air conditioning system meets strict safety and operating standards.
As the installer or service person, it is an important part of your job to install or service the
system so it operates safely and efficiently.
For safe installation and trouble-free operation, you must:
• Carefully read this instruction booklet before beginning.
• Follow each installation or repair step exactly as shown.
• Observe all local, state, and national electrical codes.
• Pay close attention to all danger, warning, and caution notices given in this manual.
WARNING:
This symbol refers to a hazard or unsafe practice which can result in
severe personal injury or death.
CAUTION:
This symbol refers to a hazard or unsafe practice which can result in
personal injury and the potential for product or property damage.
• Hazard alerting symbols
: Electrical
: Safety/alert
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.
• Do not supply power to the unit until all wiring and tubing are completed or reconnected
and checked.
• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate
earthing (grounding) can cause accidental injury or death.
• Earth (Ground) the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and
a possible fire hazard.
When Transporting
Be careful when picking up and moving the indoor and outdoor units. Get a partner to
help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin
aluminum fins on the air conditioner can cut your fingers.
When Installing...
...In a Ceiling or Wall
Make sure the ceiling/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.
...In a Room
Properly insulate any tubing run inside a room to prevent “sweating” that can cause
dripping and water damage to walls and floors.
...In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame.
Provide a suitable air baffle.
...In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher than drifting snow.
When Connecting Refrigerant Tubing
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before
connecting them, then tighten the nut with a torque wrench for a leak-free connection.
• Check carefully for leaks before opening the refrigerant valves.
When Servicing
• Turn the power OFF at the main circuit breaker panel before opening the unit to check or
repair electrical parts and wiring.
• Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check that no metal scraps or bits of
wiring have been left inside the unit being serviced.
• After installation, explain correct operation to the customer, using the operating manual.
WARNING
Never touch electrical components immediately after the power supply has been turned
off. Electrical shock may occur. After turning off the power, always wait 10 minutes or
more before touching electrical components.
• 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
• Installation of this product must be done by experienced service technicians or
professional installers only in accordance with this manual. Installation by nonprofessional or improper installation of the product may cause serious accidents such as
injury, water leakage, electric shock, or fire. If the product is installed in disregard of
the instructions in this 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.
• If refrigerant leaks when you are working, ventilate the area. If the leaking refrigerant
is exposed to a direct flame it may produce a toxic gas.
• Do not use this equipment with air or any other unspecified refrigerant in the refrigerant lines. Excess pressure can cause a rupture.
• Installation must be performed in accordance with regulations, codes, or standards for
electrical wiring and equipment in each country, region, or the installation place.
• This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety. Children should be supervised to ensure that they
do not play with the appliance.
If Necessary, Get Help
These instructions are all you need for most installation sites and maintenance conditions.
If you require help for a special problem, contact our sales/service outlet or your certified
dealer for additional instructions.
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CAUTION
• Read carefully all safety information written in this manual before you install or use the
air conditioner.
• Install the product by following local codes and regulations in force at the place of
installation, and the instructions provided by the manufacturer.
• This product is part of a set constituting an air conditioner. The product must not be
installed alone or be installed with non-authorized device 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 1/8 in (3 mm) for this product.
• To protect the persons, earth (ground) the product correctly, and use the power cable
combined with an Earth Leakage Circuit Breaker (ELCB).
• This product is not explosion proof, and therefore should not be installed in explosive
atmosphere.
• Do not touch the fins of the heat exchanger. Touching the heat exchanger fins could
result in damage to the fins or personal injury such as skin rupture.
• This product contains no user-serviceable parts. Always consult experienced service
technicians for repairing.
• When moving or relocating the air conditioner, consult experienced service technicians
for disconnection and reinstallation of the product.
• Do not place any other electrical products or household belongings under the product.
Condensation dripping from the product might get them wet, and may cause damage
or malfunction to the property.
2.3. Accessories
WARNING
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.
• Keep the installation manual in a safe place and do not discard any other accessories
until the installation work has been completed.
The following installation accessories are supplied. Use them as required.
Name and Shape
Q’ty
Installation manual
1
Cable tie (large)
Cable tie (small)
4
2
Coupler heat insulation (large)
2.1. Precautions for using R410A refrigerant
• The basic installation work procedures are the same as conventional refrigerant
(R22) models.
However, pay careful attention to the following points:
• Since the working pressure is 1.6 times higher than that of conventional refrigerant (R22) models, some of the piping and installation and service tools are special.
(Refer to the following table.)
Especially, when replacing a conventional refrigerant (R22) model with a new refrigerant R410A model, always replace the conventional piping and flare nuts with the
R410A piping and flare nuts.
• Models that use refrigerant R410A have a different charging port thread diameter to
prevent erroneous charging with conventional refrigerant (R22) and for safety. Therefore, check beforehand. [The charging port thread diameter for R410A is 1/2-20 UNF.]
• Be more careful that foreign matter (oil, water, etc.) does not enter the piping than
with refrigerant (R22) models. Also, when storing the piping, securely seal the opening by pinching, taping, etc.
• When charging the refrigerant, take into account the slight change in the composition
of the gas and liquid phases. And always charge from the liquid phase where refrigerant composition is stable.
2.2. Special tools for R410A
Gauge manifold
Charge hose
Vacuum pump
Gas leakage detector
For connection pipe fixing.
Only one is used for this model.
For indoor side pipe joint (gas pipe)
1
2. ABOUT THIS PRODUCT
Tool name
Application
(This book)
Coupler heat insulation (small)
1
Template
(Carton top)
For indoor side pipe joint
(liquid pipe)
For installing indoor unit
1
For installing indoor unit
Washer
8
For installing drain pipe
Insulation
1
Drain hose
Hose Band
1
1
Drain hose heat insulation
For installing drain pipe
(Ø 3/4 in [I.D.], Ø 1-1/16 in [O.D.])
For installing drain hose
For installing drain pipe
1
2.4. Optional parts
Contents of change
Pressure is high and cannot be measured with a R22
gauge. To prevent erroneous mixing of other refrigerants,
the diameter of each port has been changed.
It is recommended to use gauge with seals -30 inHg to 768
psi (-0.1 to 5.3 MPa) for high pressure.
-30 inHg to 551 psi (-0.1 to 3.8 MPa) for low pressure.
To increase pressure resistance, the hose material and base
size were changed.
A conventional vacuum pump can be used by installing a
vacuum pump adapter.
Parts name
Model No.
Wired Remote Controller
UTY-RNRUZ2
For air conditioner operation
(2-wire type)
Simple Remote Controller
UTY-RSRY
UTY-RHRY
For air conditioner operation
(2-wire type)
IR receiver unit
UTY-LBTUC
For air conditioner operation
Human sensor
UTY-SHZXC
To prevent waste of electricity, this function controls the
temperature setting when no
one is occupying the room.
UTG-AKXA-W
Wide panel hides the gap
between the ceiling hole and
the Cassette grille.
UTG-BKXA-W
Installation in a space of 2-3/16
in (56 mm) or greater is possible by using panel spacer
when the height behind the
ceiling is low.
Special gas leakage detector for HFC refrigerant R410A.
Wide panel
Copper pipes
It is necessary to use seamless copper pipes and it is desirable that the amount of residual
oil is less than 0.004 oz/100 ft (40 mg/10 m). Do not use copper pipes having a collapsed,
deformed or discolored portion (especially on the interior surface). Otherwise, the expansion
value or capillary tube may become blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when using R22, it is necessary to choose adequate materials.
WARNING
• Do not use the existing (for R22) piping and flare nuts.
If the existing materials are used, the pressure inside the refrigerant cycle will rise
and cause failure, injury, etc. (Use the special R410A materials.)
• Use (refill or replace with) specified refrigerant (R410A) only. Use of unspecified refrigerant can cause product malfunction, burst, or injury.
• Do not mix any gas or impurities except specified refrigerant (R410A). Inflow of air or
application of unspecified material makes the internal pressure of the refrigerant cycle
too high, and may cause product malfunction, burst of piping, or injury.
Summary
Panel spacer
Air outlet shutter plate
UTR-YDZK
Install the plate at outlet when
carrying out 3-way direction
operation
Insulation kit for High
humidity
UTZ-KXRA
Install when the condition
under the roof is over 80% in
humidity and over 86°F (30°C)
in temperature.
External input and output
PCB
UTY-XCSX
For connecting external
devices
External input and output
PCB box
UTZ-GXRA
For installing the External input
and output PCB
External connect kit
UTY-XWZXZG
For control output port
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3. GENERAL SPECIFICATION
4. INSTALLATION WORK
WARNING
3.1. Selecting the pipe material
CAUTION
• 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 0.04 oz/100 ft (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)
Pipe outside diameter [in (mm)]
Thickness [in (mm)]
1/4 (6.35)
0.032 (0.80)
3/8 (9.52)
0.032 (0.80)
1/2 (12.70)
0.032 (0.80)
5/8 (15.88)
0.039 (1.00)
3/4 (19.05)
0.039 (1.20)
3.2. 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.
Model
Diameter [in (mm)]
Liquid
Gas
18
1/4 (6.35)
1/2 (12.70)
24/30/36/42
3/8 (9.52)
5/8 (15.88)
• 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 248 °F (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 9/16 in (15 mm) or
thicker and if the expected humidity exceeds 80 %, use heat insulation that is 13/16 in
(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 68 °F (20 °C)).
3.3. Electrical requirement
The indoor unit is powered from the outdoor unit. Do not power indoor unit from separate
power source.
WARNING
Standard for electrical wiring and equipment differs in each country or region. Before
you start electrical working, confirm related regulations, codes, or standards.
Conductor size
(AWG)
Cable type
Connection cable
AWG 22 to 16
Sheathed PVC
cable
3 wire + Earth (Ground)
Remote controller
cable
(2-wire type)
AWG 22 to 16
Sheathed PVC
cable
Non-polar 2 wire, twisted
pair
Cable
• Do not turn on the power until all installation work is complete.
• Carrying and installation of the unit should be performed by a sufficient number of
people and with sufficient equipment that is adequate for the weight of the unit.
Performing such work with an insufficient number of people or with inadequate equipment could result in dropping of the unit or personal injury.
CAUTION
For installation details, refer to the technical data.
4.1. Selecting an installation location
Decide the mounting position together with the customer as follows.
WARNING
• Select installation locations that can properly support the weight of the indoor 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.
• Install the units securely so that they do not topple or fall.
CAUTION
• 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 fall 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 fall 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.
• Install the unit where drainage does not cause any trouble.
• Install the indoor unit, outdoor unit, power supply cable, transmission cable, and
remote control cable at least 40 in (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 40 in (1 m) apart, you could still receive noise
under some signal conditions.)
• Install the unit where ambient temperature does not reach 140 °F (60 °C) or more.
Take a measure such as ventilation for an environment in which heat is retained.
• If children under 10 years old may approach the unit, take preventive measures so
that they cannot reach the unit.
• Install the indoor unit on the place where the height from the floor is more than 71 in
(1.8 m).
• Use the “Insulation kit for high humidity” (option), when the condition under the roof is
over 80% in humidity and over 86 °F (30 °C) in temperature. Otherwise, there is a risk
of condensation on the ceiling.
(1) Locate where the air can be distributed evenly throughout the room by the 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 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.
Correct initial installation location is important because it is difficult to move unit after it is
installed.
Remarks
Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop
is 2% or more.
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[Unit: in (mm)]
11 (256) or more (18/24 model)
12 (298) or more (30/36/42 model)
5-1/2 to 5-11/16
(140 to 145)
1-15/16 to 3-15/16
(50 to 100)
4.2. Installation dimension
• The ceiling rear height as shown in the figure.
Model
Strong and durable ceiling
Dimension [in (mm)]
A
B
18/24
9-11/16
(246)
10-1/16
(256)
30/36/42
11-5/16
(288)
11-3/4
(298)
3/8
(10)
119 (3,000) or more
71 (1,800) to H
Obstruction
• Refrigerant piping and drain piping positions.
3/8
(10)
Floor
H: Maximum height from floor to ceiling
[Unit: in (mm)]
3-1/8
(80)
40 (1,000) or more
1-9/16
(40)
60 (1,500)
or more
H [in (mm)]
Drain pipe
30/36/42 model
Standard mode
119 (3,000)
126 (3,200)
High Ceiling mode
138 (3,500)
166 (4,200)
Liquid pipe
Drain pipe
(Connect the attached
drain hose)
7-7/8
(200)
* Be sure to make the function settings with the remote controller according to the
installed ceiling height.
13-7/16 (342) 11-9/16 (293)
Discharge direction setting
Gas pipe
1-3/4 (45)
7-1/16
(180)
18/24 model
5-1/2
(140)
Function setting
• The discharge direction can be selected as shown below.
3 direction
• Distribution ducts and fresh air inlet positions.
• Select the most appropriate airflow direction from 3 or 4 directions according to the
shape of the room and the installation position.
• When changing the number of outlets, we recommend using the optional AIR OUTLET
SHUTTER PLATE KIT to close the outlet.
• For the specific closing pattern, please refer to the attached AIR OUTLET SHUTTER
PLATE KIT’S MANUAL. (Do so before installing the cassette grille as it will be installed
on the body.)
Drain pipe
Refrigerant pipe
[Unit: in (mm)]
3-15/16 (100)
3-1/4 (83)
Cut out
6-7/16
(163)
3-9/16 (90)
3-15/16 (100)
3-1/4 (83)
13-7/8 (352) 10 × Ø1/8 (10 × Ø3.2) hole
Detailed diagram of distribution duct
connecting port (4 sides)
Ø4-1/2 (Ø114) 9-1/8 (232)
Ø3-3/4 (Ø95)
bolt pitch
Cut out
Distribution duct connecting port
6-7/16
(163)
4 in (100 mm) or more*1
Distribution duct connecting port
*1: Please ensure sufficient
service access during
installation.
Distribution duct connecting port
Fresh air inlet
position
Distribution duct
connecting port
4 direction
4 × Ø1/8 (4 × Ø3.2) hole
Fresh air inlet position
NOTES:
Conduct proper insulation when connecting the distribution ducts and fresh air inlet.
4.3. Installing the unit
Insulation
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.
• If the job is done with the panel frame only, there is a risk that the unit will come loose.
Please take care.
• When fastening the hangers, make the bolt positions uniform.
4.3.1. Position the ceiling hole and hanging bolts
(1) Positions of the ceiling opening, hanging bolt pitch, piping and ducts.
• Ceiling opening and hanging bolt pitch.
[Unit: in (mm)]
37-3/8 (950)
(Cassette grille)
33-7/8 to 35-13/16
(860 to 910) (Ceiling opening)
13/16 to 1-3/4
(20 to 45)
13/16 to 1-3/4
(20 to 45)
33-1/16 (840)
(Indoor unit)
5-1/8
(130)
5-1/8
(130)
5-1/8 (130)
7-7/8
(200)
33-1/16 (840)
(Indoor unit)
33-7/8 to 35-13/16
(860 to 910) (Ceiling opening)
37-3/8 (950)
(Cassette grille)
5-1/8 (130)
310-1/4 (768)
(Hanging bolt pitch)
31-5/16 (796)
(Hanging bolt pitch)
1-15/16
(50)
Fresh air inlet position
NOTES:
When introducing fresh air into the indoor unit, please remove the insulation affixed to the
drain pan.
(2) Setting the positions of hanging bolt and ceiling opening.
• Use an installation template (packaging top surface) to set the positions of the hanging
bolt and ceiling opening and drill holes.
(3) Hanging structure.
• Select a strong structure for the hanging location.
• If necessary, reinforce the hanging bolt with quake proof columnar support material to
prevent shaking.
• Use hanging bolts of M8-M10.
13/16 to 1-3/4
(20 to 45)
13/16 to 1-3/4
(20 to 45)
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4.3.2. Hanging preparations
• Firmly fasten the hanging bolts as
shown in the figure or by another
method.
• Install the hanging bolts at a place
where they would be capable of
holding a weight of at least 110 lbf
(490 N) per bolt.
Pipe size
Hole-in anchor
Hole-in plug
Concrete
Insert
Drain pipe
Ø 3/4 in [I.D.]; Ø 1-1/16 in [O.D.]
Hanging fittings
Hanging bolt M10
(locally purchased)
60 to 78 in (1.5 to 2.0 m)
Ø 3/4 in [I.D.]; Ø 1-1/16 in [O.D.]
Downward gradient 1/100 to 1/50
4.3.3. Body installation
PROHIBITED:
WARNING
• Perform final tightening by tightening the double nut firmly.
• Be sure to install the body horizontally and adjust the height below the body and the
ceiling surface properly.
(1) Install the attached washer and nut (prepared on site) onto the hanging bolt.
(2) Hook the body onto the hanging bolt.
(3) Adjust the dimensions of the ceiling surface from the body. After installing the Cassette
grille, you can make fine adjustment of the height of the body. For details, refer to the
installation manual of the Cassette grille.
Hanging bolt
(locally purchased)
Washer
(Accessories)
[Unit: in (mm)]
Nut A
(locally purchased)
Rise
1-3/16 (30) or more
Nut B (Double Nut)
(locally purchased)
Air bleeding
When lifting up drain:
• Height of inclined pipe should be less than 33 in (850 mm) from the ceiling. A rise dimension over this range will cause leakage.
• Lift up the pipe vertically at the position of 11 in (300 mm) or less from the unit.
Downward gradient
11 in (300 mm) or less
1/100 to 1/50
Ø 3/4 in [I.D.];
Ø 1-1/16 in [O.D.]
local arrangement
33 in (850 mm)
or less
Horizontal or
upward gradient
After installing the body,
tighten the nuts.
Washer
(Accessories)
Trap
33 in (850 mm)
or less
Ø 1 in [I.D.]; Ø 1-5/16 in [O.D.] or more
Downward gradient 1/100 to 1/50
3/8 to 9/16 (10 to 15)
4.3.4. Leveling
Using a level, or vinyl hose filled with water, fine adjust so that the body is level.
Inclined installation so as the drain pipe side is higher may cause a malfunction of the float
switch, and may cause water leakage.
Drain pipe
Vinyl hoses
Working procedure
(1) Install the attached drain hose to the drain port of the body. Attach hose band on top of
the drain hose.
(2) Use vinyl adhesive agent to glue the drain piping (PVC pipe Ø 3/4 in [I.D.]; Ø 1-1/16 in
[O.D.]) which is prepared on site or elbow 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.
Install the knob
faces upward
4.4. Installing the drain pipe
WARNING
• Do not insert the drain piping into the sewer where sulfurous gas occurs. (Heat
exchange erosion may occur.)
• Insulate the parts properly so that water will not drip from the connection parts.
• Check for proper drainage after the construction by using the visible portion of transparent drain port and the drain piping final outlet on the body.
Attached drain hose
heat insulation
(Accessories)
Attached hose band
(Accessories)
Locally arranged
vinyl pipe
Attached drain hose
(Accessories)
Attached heat insulation
(Accessories)
CAUTION
Do not apply adhesive agent on the drain port of the body. (Use the attached drain
hose and connect the drain piping.)
Install the drain pipe:
• Install the drain pipe with downward gradient (1/50 to 1/100) and so there are no rises or
traps in the pipe.
• Use general hard polyvinyl chloride pipe (Ø 3/4 in [I.D.]; Ø 1-1/16 in [O.D.]) and connect
it with adhesive (polyvinyl chloride) so that there is no leakage.
• When the pipe is long, install supporters.
• Do not perform air bleeding.
• Always heat insulate the indoor side of the drain pipe.
• If it is impossible to have sufficient gradient of pipe, perform drain lift-up.
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(a) Top view
Check if [L] is flared uniformly
and is not cracked or scratched.
(b) Side view Ø 3/4 in [I.D.];
Ø 1-1/16 in [O.D.]
Applying area
of adhesive
1-3/8 in (35 mm)
Hose Band
B
Die
A
L
Pipe
3/16 to 3/8 in
(5 to 10 mm)
Gauge line
3/16 in (4 mm)
or less
Dimension A [in (mm)]
Pipe outside diameter
[in (mm)]
13/16 in (20 mm)
(d) Hose opening view
(c) Top view
Wind the attached heat insulation
around the hose band
Make sure the alignment is
on top
(0)
Dimension B 0-0.015
(-0.4)
[in (mm)]
Flare tool for R410A,
clutch type
1/4 (6.35)
3/8 (9.1)
3/8 (9.52)
1/2 (13.2)
0 to 0.020
(0 to 0.5)
1/2 (12.70)
5/8 (16.6)
5/8 (15.88)
3/4 (19.7)
3/4 (19.05)
15/16 (24.0)
When using conventional (R22) flare tools to flare R410A pipes, the dimension A should
be approximately 0.020 in (0.5 mm) more than indicated in the table (for flaring with
R410A flare tools) to achieve the specified flaring. Use a thickness gauge to measure the
dimension A. It is recommended that a R410A flaring tool is used.
Width across
flats
Make sure there
are no gaps
Pipe outside diameter
[in (mm)]
Width across flats of Flare
nut [in (mm)]
1/4 (6.35)
11/16 (17)
NOTE: Check for drainage
3/8 (9.52)
7/8 (22)
Pour about 1 liter of water from
the position shown in the diagram or from the airflow outlet
to the dew tray. Check for any
abnormalities such as strange
noises and whether the drain
pump functions normally.
1/2 (12.70)
1 (26)
5/8 (15.88)
1-1/8 (29)
3/4 (19.05)
1-7/16 (36)
5.1.2 Bending pipes
• If pipes are shaped by hand, be careful not to collapse them.
• Do not bend the pipes at 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.
5. PIPE INSTALLATION
CAUTION
WARNING
• During installation, make sure that the refrigerant pipe is attached firmly before you
run the compressor.
Do not operate the compressor under the condition of refrigerant piping not attached
properly with 2-way or 3-way valve open. This may cause abnormal pressure in the
refrigeration cycle that leads to breakage and even injury.
• During the pump-down operation, make sure that the compressor is turned off before
you remove the refrigerant piping.
Do not remove the connection pipe while the compressor is in operation with 2-way
or 3-way valve open. This may cause abnormal pressure in the refrigeration cycle
that leads to breakage and even injury.
• When installing and relocating the air conditioner, do not mix gases other than the
specified refrigerant R410A to enter the refrigerant cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to
an abnormally high value and cause breakage, injury, etc.
• 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.
CAUTION
• Be more careful so 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.
5.1. Flare connection (pipe connection)
WARNING
Tighten the flare nuts with a torque wrench using the specified tightening method. Otherwise, the flare nuts could break after a prolonged period, causing refrigerant to leak and
generate hazardous gas if the refrigerant comes into contact with a flame.
• To prevent breaking of the pipe, avoid sharp bends.
• If the pipe is bent repeatedly at the same place, it will break.
5.1.3. Pipe connection
CAUTION
• Be sure to connect the pipe against the port on the indoor unit and the outdoor unit
correctly. If the centering is improper, the flare nut cannot tightened smoothly. If the
flare nut is forced to turn, the threads will be damaged.
• Do not remove the flare nut from the indoor unit pipe until immediately before connecting the connection pipe.
• Do not use mineral oil on flared part. Prevent mineral oil from getting into the system
as this would reduce the lifetime of the units.
• Hold the torque wrench at its grip, keeping it at a right angle with the pipe, in order to
tighten the flare nut correctly.
(1) Detach the caps and
plugs from the pipes.
(2) Center the pipe against
the port on the indoor
unit, and then turn the
flare nut by hand.
(3) When the flare nut is
tightened properly by
your hand, hold the body
side coupling with a
separate spanner, then
tighten with a torque
wrench. (See the table
below for the flare nut
tightening torques.)
5.1.1. Flaring
• Use special pipe cutter and flare tool exclusive for R410A.
(1) Cut the connection pipe to the necessary length with a pipe cutter.
(2) Hold the pipe downward so that cuttings will not enter the pipe and remove any burrs.
(3) Insert the flare nut (always use the flare nut attached to the indoor and outdoor units
respectively) onto the pipe and perform the flare processing with a flare tool. Leakage
of refrigerant may result if other flare nuts are used.
(4) Protect the pipes by pinching them or with tape to prevent dust, dirt, or water from
entering the pipes.
Connection pipe (gas)
Connection pipe
(liquid)
Tighten with 2
wrenches.
Holding wrench
Flare nut
Torque wrench
Indoor unit pipe (Body side)
Flare nut [in (mm)]
Connection pipe
Tightening torque [lbf·ft (N·m)]
1/4 (6.35) dia.
11.8 to 13.3 (16 to 18)
3/8 (9.52) dia.
23.6 to 31.0 (32 to 42)
1/2 (12.70) dia.
36.1 to 45.0 (49 to 61)
5/8 (15.88) dia.
46.5 to 55.3 (63 to 75)
3/4 (19.05) dia.
66.4 to 81.1 (90 to 110)
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CAUTION
5.2. Installing heat insulation
CAUTION
• After checking for gas leaks (refer to the Installation Manual of the outdoor unit),
perform this section.
• Install heat insulation around both the large (gas) and small (liquid) pipes. Failure to
do so may cause water leaks.
After checking for gas leaks, insulate by wrapping insulation around the 2 parts (gas and
liquid) of the indoor unit coupling, using the Coupler Heat Insulation.
After installing the Coupler Heat Insulation, wrap both ends with vinyl tape so that there is
no gap.
Cable tie (large)
(Accessories)
When handling PCB, static electricity charged in the body may cause malfunction of
the PCB. Follow the cautions below:
• Establish a ground for the indoor and outdoor units and peripheral devices.
• Cut power (breaker) off.
• Touch metal part of the indoor and outdoor units for more than 10 seconds to
discharge static electricity charged in the body.
• Do not touch terminals of parts and patterns implemented on PCB.
6.1. Wiring method
6.1.1. Connection diagrams
Connection cable to outdoor unit
Coupler heat
insulation
(Accessories)
Earth (ground) line
No gap
Power line
Body
Be sure to overlap
the insulation
Coupler heat
insulation
Control line
Remote controller cable
CAUTION
Must fit tightly against body without any gap.
Red
White
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.
• 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.
• 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.
• 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 block numbers and connection cable colors with those of the
outdoor unit. Erroneous wiring may cause burning of the electric parts.
• 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.
• Always fasten the outside covering of the connection cable with the cable clamp. (If
the insulator is chafed, electric leakage may occur.)
• 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 a earth (ground) leakage breaker. In addition, install the earth (ground) 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 touched directly with your hand.
• Perform wiring work in accordance with standards so that the air conditioner can be
operated safely and positively.
• Unit shall be earthed (grounded) in compliance with the applicable local and national
codes.
CAUTION
• If the indoor unit connection cable and power supply are wired incorrectly, the air
conditioner may be damaged or cause malfunction.
• 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.
• Do not connect power supply cables to the connection or remote controller terminals,
as this will damage the product.
• Never bundle the power supply cable and connection cable together. Bundling these
cables together will cause miss operation.
6.1.2. Connection cable preparation
Connection cable
Keep the earth (ground) wire longer than the other wires.
Conduit connector
7-7/8 in (200 mm)
Earth (ground)
wire
8-1/4 in (210 mm)
How to connect wiring to the terminals.
(1) Use ring terminals with insulating sleeves as shown in the figure below to connect to
the terminal block.
(2) Securely crimp the ring terminals to the wires using an appropriate tool so that the
wires do not come loose.
)
mm
10
Ring terminal
n(
i
3/8
p
i
Str
Sleeve
(3) Use the specified wires, 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) Refer to the table below for the terminal screw tightening torques.
WARNING
Use ring terminals and tighten the terminal screws to the specified torques, otherwise,
it may cause abnormal overheating and possibly cause serious damage inside the unit.
Tightening torque [lbf·in (N·m)]
M4 screw
11 to 16 (1.2 to 1.8)
Screw with
special washer
Wire
Ring terminal
Screw with
special
washer
Wire
Ring terminal
Terminal blocks
Remote controller cable
1-3/16 in (30 mm)
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6.1.3. Wiring procedure
(2) Thread each cable through the holes or indents of the cabinet and connect the wires.
Connection cable
1
2
3
Control line
Earth
(ground)
Power line
Lock nut
Connection
cable
Outdoor unit
Earth
(ground)
Conduit connector
Remote controller cable
(3) After wiring is complete, secure the cables with the cable clamps.
Cable tie (small)
(Accessory)
Y1
Y2
Y3
1
White
2
Red
Remote
controller
Remote
controller
cable
Remote
controller
cable
*Earth (Ground) the remote controller if it has a earth (ground) wire.
(4) Replace the Control box cover and Wiring cover. Securely tighten the screws.
CAUTION
• Tighten the indoor unit connection wire and power supply indoor and outdoor unit,
terminal board connections firmly with the terminal board screws. Faulty connection
may cause a fire.
• Connect the indoor unit connection wire by matching the numbers of the outdoor and
indoor units terminal board numbers as shown in terminal label.
• Be sure to refer to the connection diagram for the correct field wiring. Wrong wiring
causes malfunction of the unit.
6.2. Connection wiring
* Cure the wiring connecting port and remote controller connecting port with paste or heat
insulation so that insects or dust will not enter the unit
CAUTION
• Be careful not to mistake the power supply cable and connection wires when installing.
• Install so that the wires for the remote controller will not come in contact with other
connection wires.
(1) Remove the control box cover and wiring cover by loosening the screws.
CAUTION
Do not bundle the remote controller cable, or wire the remote controller cable in parallel, with the indoor unit connection wire (to the outdoor unit) and the power supply
cable. It may cause erroneous operation.
(5) Fix the conduit with the supporters as shown below.
Conduit (Power supply cable)
Attach the conduit connector on
the wiring connecting port.
(The grommet edging and the
connection cable clamp are not
used.)
Supporter
Conduit connector
Indoor unit
30 in
(756 mm)
or less
Lock nut
54 in
(1,361 mm)
or less
54 in
(1,361 mm)
or less
54 in
(1,361 mm)
or less
7. CASSETTE GRILLE INSTALLATION
Wiring connecting port
(for power supply cable)
• Install according to the installation manual for Cassette grille.
• Be sure to confirm there is no gap between the panel and main unit after installing the
Cassette grille.
8. REMOTE CONTROLLER INSTALLATION
Wiring
connecting port (for
transmission cable
and remote controller
cable)
• Install according to the installation manual for Remote controller.
Wiring cover
Control box cover
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Ceiling height
9. FUNCTION SETTING
Select the appropriate ceiling height according to the place of installation.
(♦... Factory setting)
9.1. Turning on the power
Function
number
CAUTION
Setting
value
Recheck the wiring. Incorrect wiring will cause trouble.
When initially starting up this unit, the following setting screen will be displayed. Settings
configured at this stage can be changed afterwards.
20
Setting description
Standard [119 in (3.0 m): 18/24 model]
[126 in (3.2 m): 30/36/42 model]
01
High ceiling [138 in (3.5 m): 18/24 model]
[166 in (4.2 m): 30/36/42 model]
02
9.2. Setting method
♦
00
Low ceiling [107 in (2.7 m)]
The ceiling height values are for the 4-way outlet.
Do not change this setting in the 3-way outlet mode.
Refer to installation manual of remote controller.
Outlet directions
9.3. RC Sensor setting
Select the appropriate number of outlet directions according to the installation conditions.
(♦... Factory setting)
The detection location of the room temperature can be selected from the following two
examples. Choose the detection location that is best for the installation location.
A. Indoor unit setting (factory setting)
A
The room temperature is detected by the indoor unit
temperature sensor.
Function
number
22
Indoor unit
Setting
value
00
01
Setting description
4-way
3-way
♦
Vertical wind direction adjustment range
To prevent draft, change the setting to "Upward" (01).
Note that the airflow in certain usage conditions may leave the ceiling dirty. In such cases,
the use of the optional “PANEL SPACER KIT” is recommended.
(♦... Factory setting)
Function
number
B. Remote controller setting
B
The room temperature is detected by the remote
controller temperature sensor.
Setting
value
Setting description
00
Standard
01
Upward
23
Indoor unit
♦
Ceiling
UP
CAUTION
Standard
• When selecting the “Remote controller setting”, if the detected temperature value
between the temperature sensor of the indoor unit and the temperature sensor of
the remote controller varies significantly, it is likely to return to the control status of
temperature sensor of the indoor unit temporarily.
• As the temperature sensor of remote controller detects the temperature near the
wall, when there is a certain difference between the room temperature and the wall
temperature, the sensor will not detect the room temperature correctly sometimes.
Especially when the outer side of the wall on which the sensor is positioned is
exposed to the open air, it is recommended to use the temperature sensor of the
indoor unit to detect the room temperature when the indoor and outdoor temperature
difference is significant.
• The temperature sensor of the remote controller is not only used when there is a
problem in the detection of the temperature sensor of the indoor unit.
Upward
Swing range
Outlet cross section
Room temperature control for indoor unit sensor
Depending on the installed environment, correction of the room temperature sensor may
be required.
Select the appropriate control setting according to the installed environment.
The temperature correction values show the difference from the Standard setting “00”
(manufacturer’s recommended value).
(♦... Factory setting)
Function number
9.4. Function Details
Filter sign
Select appropriate intervals for displaying the filter sign on the indoor unit according to the
estimated amount of dust in the air of the room.
If the indication is not required, select "No indication" (03).
(♦... Factory setting)
Function
number
11
Setting
value
Setting description
00
Standard (2500 hours)
01
Long interval (4400 hours)
02
Short interval (1250 hours)
03
No indication
30
31
(For cooling) (For heating)
♦
Setting
value
00
Setting description
Standard setting
01
No correction 0 °F (0.0 °C)
02
-1 °F (-0.5 °C)
03
-2 °F (-1.0 °C)
04
-3 °F (-1.5 °C)
05
-4 °F (-2.0 °C)
06
-5 °F (-2.5 °C)
07
-6 °F (-3.0 °C)
08
-7 °F (-3.5 °C)
09
-8 °F (-4.0 °C)
10
+1 °F (+0.5 °C)
11
+2 °F (+1.0 °C)
12
+3 °F (+1.5 °C)
13
+4 °F (+2.0 °C)
14
+5 °F (+2.5 °C)
15
+6 °F (+3.0 °C)
16
+7 °F (+3.5 °C)
17
+8 °F (+4.0 °C)
♦
More
Cooling
Less
Heating
Less
Cooling
More
Heating
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Room temperature control for wired remote controller sensor
Depending on the installed environment, correction of the wire remote temperature sensor
may be required.
Select the appropriate control setting according to the installed environment.
To change this setting, set Function 42 to Both “01”.
Ensure that the Thermo Sensor icon is displayed on the remote controller screen.
(♦... Factory setting)
Setting
value
Function number
35
36
(For cooling) (For heating)
No correction
01
No correction 0 °F (0.0 °C)
02
-1 °F (-0.5 °C)
03
-2 °F (-1.0 °C)
04
-3 °F (-1.5 °C)
05
-4 °F (-2.0 °C)
06
-5 °F (-2.5 °C)
07
-6 °F (-3.0 °C)
08
-7 °F (-3.5 °C)
09
-8 °F (-4.0 °C)
10
+1 °F (+0.5 °C)
11
+2 °F (+1.0 °C)
12
+3 °F (+1.5 °C)
+4 °F (+2.0 °C)
14
+5 °F (+2.5 °C)
15
+6 °F (+3.0 °C)
16
+7 °F (+3.5 °C)
17
+8 °F (+4.0 °C)
Enable
01
Disable
00
Operation/Stop mode 1
01
(Setting prohibited)
02
Forced stop mode
03
Operation/Stop mode 2
♦
To use the temperature sensor on the wired remote controller only, change the setting to
"Wired remote controller" (01). This function will only work if the function setting 42 is set
at "Both" (01)
(♦... Factory setting)
More
Cooling
Less
Heating
Function
number
Setting
value
48
Setting description
00
Both
01
Wired remote controller
♦
Indoor unit fan control for energy saving for cooling
Enables or disables the power-saving function by controlling the indoor unit fan rotation
when the outdoor unit is stopped during cooling operation.
(♦... Factory setting)
Function
number
Less
Cooling
More
Heating
Setting
value
Setting description
00
Disable
49
01
Enable
02
Remote controller
♦
00: When the outdoor unit is stopped, the indoor unit fan operates continuously following
the setting on the remote controller.
01: When the outdoor unit is stopped, the indoor unit fan operates intermittently at a very
low speed.
02: Enable or disable this function by remote controller setting.
Set to "00" or "01" when connecting a remote controller that cannot set the Fan control for
energy saving function or connecting a network converter.
To confirm if the remote controller has this setting, refer to the operating manual of each
remote controller.
Setting description
00
Setting description
Room temperature sensor switching (Aux.)
(♦... Factory setting)
40
Setting
value
♦
Enable or disable automatic restart after a power interruption.
Setting
value
(♦... Factory setting)
Function
number
46
Auto restart
Function
number
"Operation/Stop" mode or "Forced stop" mode can be selected.
Setting description
00
13
External input control
♦
Switching functions for external output terminal
Functions of the external output terminal can be switched.
(♦... Factory setting)
* Auto restart is an emergency function such as for power outage etc. Do not attempt to
use this function in normal operation. Be sure to operate the unit by remote controller or
external device.
Function
number
Setting
value
Setting description
00
Operation status
01-08
Other status
(refer to Technical manual)
Room temperature sensor switching
(Only for wireless remote controller)
When using the Wired remote controller temperature sensor, change the setting to "Both"
(01).
(♦... Factory setting)
Function
number
Setting
value
Setting description
00
Indoor unit
01
Both
42
♦
60
09
Error status
10
Indoor unit fan operation status
11
External heater
Setting record
 Record any changes to the settings in the following table.
Function
number
00: Sensor on the indoor unit is active.
01: Sensors on both indoor unit and wired remote controller are active.
* Remote controller sensor must be turned on by using the remote controller
Cold air prevention
This setting is to disable the cold air prevention function during heating operation. When
disabled, the fan setting will always follow the setting on the remote controller. (Excluding
defrost mode)
(♦... Factory setting)
Setting
11
Filter sign
20
Ceiling height
22
Outlet directions
23
Vertical wind direction adjustment range
30
31
35
Room temperature control for indoor unit sensor
36
Room temperature control for wired remote controller sensor
40
Auto restart
42
Room temperature sensor switching
43
Cold air prevention
Remote controller custom code
44
Remote controller custom code
(Only for wireless remote controller)
The indoor unit custom code can be changed.
Select the appropriate custom code.
46
External input control
48
Room temperature sensor switching (Aux.)
49
Indoor unit fan control for energy saving for cooling
60
Switching function for external outlet terminal
Function
number
43
Setting
value
Setting description
00
Enable
01
Disable
♦
(♦... Factory setting)
Function
number
44
Setting
value
Setting description
00
A
01
B
02
C
03
D
♦
Setting value
Cooling
Heating
Cooling
Heating
After completing the function setting, be sure to turn off the power and turn it on again.
♦
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Set the R.C. address in accordance with the table below.
10. SPECIAL INSTALLATION METHODS
Indoor unit
CAUTION
• Be sure to turn off the electrical breaker before making settings.
• Do not set the DIP switch or rotary switch of this unit except as specified in this
manual or the operating manual supplied with the air conditioner.
Setting the switches other than specified will cause an accident or trouble.
• Do not touch the circuit board and circuit board parts directly with your hands. Otherwise, injury or electric shock could result.
• Use an insulated screwdriver to set the dip switches.
10.1. Setting the address
R.C. address
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DIP SWITCH No.
1
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
2
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
3
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
4
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
NOTE
Be sure to set consecutive R.C. address.
The indoor units cannot be operated if a number is skipped.
10.2. Setting the DIP switch
Refer to installation manual of remote controller.
10.3. Group control
CAUTION
1
2
Group control is only possible between units with remote controllers of the same type.
To confirm the type of remote controller, refer to the back of the remote controller or
“2.4. Optional parts”.
3
Y1
With a single remote controller, up to 16 units can be simultaneously operated.
Y2
Y3
I.U.
I.U.
I.U.
I.U.
1
2
B
C
D
E
A
Primary
ON
1
2
3
A, B, C, D, E : Remote controller cable. (Refer to 3.3. Electrical requirement.)
A+B+C+D+E ≤ 1640 ft (500 m)
4
RC AD
10.4. Multiple remote control
Remote controller address
(1) 2-wire type
DIP switch (RC AD SW)...Factory setting “00”
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.
Setting
Setting range
Remote controller
address
Example
00 to 15
Indoor unit
RC AD SW
00
RC AD SW
01
CAUTION
Multiple installation method described above is prohibited to combine 3 Wired type
with 2 Wired Type.
I.U.
Type of switch
Setting
example
00
1
2
3
4
A
RC AD SW
02
A
B
RC AD
Primary
Indoor unit
I.U.
ON
If 4 indoor units are connected.
Indoor unit
Up to 2 remote controllers can be used to operate the indoor units.
Indoor unit
Primary Secondary
A, B : Remote controller cable. (Refer to 3.3. Electrical requirement.)
A ≤ 1640 ft (500 m), A+B ≤ 1640 ft (500 m)
RC AD SW
03
Remote
controller
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● When function setting is “Forced stop” mode.
11. OPTION AND OTHER CONNECTABLE DEVICES
Input signal
WARNING
Regulation of cable differs from each locality, refer in accordance with local rules.
Command
OFF → ON
Forced stop
ON → OFF
Normal
* When the forced stop is triggered, indoor unit stops and Operation/Stop operation by a
remote controller is restricted.
1
2
3
● When function setting is "Operation/Stop" mode 2.
Input signal
Command
Y1
Operation
ON → OFF
Stop (R.C. disabled)
Y2
OFF → ON
Y3
1
2
11.2.2. External output
Terminal
(External in)
CN48
CN65
CN47
(IR receiver) (External in/out PCB) (External out)
11.1. Optional parts
This air conditioner can be connected with the following optional kits.
For details on how to install optional parts, refer to the installation manual included in each
item.
Option type
Connector No.
UTY-LBTUC (IR Receiver)
CN48
UTY-XWZXZG (External connect kit)
CN47*1
UTY-XCSX (External input and output PCB)
CN65*2
• A twisted pair cable (22AWG) should be used. Maximum length of cable is 82 ft (25 m).
• 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
Output select
● When interlocking with external device
Connected
device
CN47
Relay (locally purchased)
or
● When displaying "Operation/Stop"
*1: For external output terminal setting, refer to Function No.60 in "9. FUNCTION SETTING".
*2: Various settings are available by using the optional External input and output PCB.
11.2.External input and output
PCB
Resistor
CN47
LED
11.2.1. External input
• Indoor unit functions such as Operation/Stop or Forced stop can be done by using
indoor unit terminals.
• “Operation/Stop” mode or “Forced stop” mode can be selected with function setting of
indoor unit.
• A twisted pair cable (22 AWG) should be used. Maximum length of cable is 492 ft
(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.
Terminal
Connected device
Operation behavior
Function setting
00
01 - 05
06
60
07 - 08
09
Connected device
● Dry contact terminal
When a power supply is unnecessary at the input device you want to connect, use the Dry
contact terminal.
PCB
10
11
*1
PCB
Terminal
(External in)
Status
Stop
Operation
Output voltage
0V
DC 12 V
OFF
0V
ON
DC 12 V
Stop
Operation
0V
DC 12 V
OFF
0V
ON
DC 12 V
Normal
Error
Indoor unit fan stop
Indoor unit fan operation
0V
DC 12 V
0V
DC 12 V
External heater OFF
0V
External heater ON
DC 12 V
Connected device
*1: The switch can be used on the following condition: DC 12 V to 24 V, 1 mA to 15 mA.
Operation behavior
● Input signal type
ON
OFF
Edge
● When function setting is “Operation/Stop” mode 1.
Input signal
Command
OFF → ON
Operation
ON → OFF
Stop
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11.2.3. Connection methods
Wire modification
13. TEST RUN
• 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.
IMPORTANT: Be sure to insulate the connection between the wires.
Option parts
External output wire
Locally purchased
Check items
(1) Is operation of each button on the remote control unit normal?
(2) Does each lamp light normally?
(3) Do airflow direction louvers operate normally?
(4) Is the drain normal?
(5) Do not have an abnormal noise and vibration during operation?
Do not operate the air conditioner in test run for a long time.
[Operation method]
Depending on your installation, choose from the following:
Solder and insulate the connected parts.
• Connecting wires to the terminals.
Use ring terminals with insulating sleeves to connect to the terminal block.
• Connection terminals and wiring arrangement
In following figure, all the possible connections are done for description.
In actual installation, connections will differ according to each installation requirements.
2
By the indoor unit or IR receiver unit
• To start test run, press the “MANUAL AUTO” button of the unit for more than 10 seconds
(forced cooling).
• To end test run, press the “MANUAL AUTO” button for more than 3 seconds or press
the remote controller “START/STOP” button.
By the wired remote controller
• For the operation method, refer to the installation manual and the operating manual of
the wired remote controller.
PCB
1
By the wireless remote controller (with “TEST RUN” button)
• To start test run, press the “START/STOP” button and the “TEST RUN” button on the
remote controller.
• To end test run, press the remote controller “START/STOP” button.
3
The Operation indicator lamp and Timer indicator lamp will simultaneously flash during the
test run mode.
Heating test run will begin in a few minutes when HEAT is selected by the remote controller
[reverse cycle model only].
14. CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating manual:
External
input/output PCB
communication wire
External
output wire
Clamp
Clamp
(1) Starting and stopping method, operation switching, temperature adjustment, timer, air
flow switching, and other remote controller unit operations.
(2) Cleaning and maintenance of the product, and other items such as air filters and air
louvers if applicable.
(3) Give the operating and installation manuals to the customer.
(4) If the signal code is changed, explain to the customer how it changed (the system
returns to signal code A when the batteries in the remote controller unit are replaced).
*(4) is applicable to using wireless remote controller.
15. ERROR CODES
Y1
Y2
Y3
1
2
If you use a wired type remote controller, error codes will appear on the remote controller
display. For more information, refer to the installation manual of the remote controller. If you
use a wireless remote controller, the lamps on the IR receiver unit will output error codes
by way of blinking patterns. Refer to the lamp blinking patterns and error codes in the table
below. An error display is displayed only during operation.
Error display
Operation
indicator
lamp
(green)
External
input
wire
12. 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
CHECK BOX
Wired
Timer
Economy
remote
indicator indicator controller
lamp
lamp
Error code
(orange) (green)
Description
(1)
(1)
Serial communication error
(1)
(2)
Wired remote controller
communication error
(1)
(5)
Check run unfinished
(1)
(6)
Peripheral unit transmission PCB
connection error
(1)
(8)
External communication error
(1)
Has the indoor unit been installed
correctly?
Vibration, noise, indoor unit may
drop
Has there been a check for gas
leaks (refrigerant pipes)?
No cooling, No heating
Has heat insulation work been
completed?
Water leakage
(2)
Does water drain easily from the
indoor units?
Water leakage
(2)
(2)
Indoor unit capacity error
Are the wires and pipes all connected completely?
No operation, heat or burn damage
(2)
(3)
Combination error
Is the connection cable the specified No operation, heat or burn damthickness?
age
Are the inlets and outlets free of any
No cooling, No heating
obstacles?
Unit number or Refrigerant circuit
address setting error
[Simultaneous Multi]
• Connection unit number
error (indoor secondary unit)
[Simultaneous Multi]
• Connection unit number error
(indoor unit or branch unit)
[Flexible Multi]
(2)
(4)
(2)
(6)
Indoor unit address setting error
(2)
(7)
Primary unit, secondary unit setup
error [Simultaneous Multi]
After installation is completed, has
the proper operation and handling
been explained to the user?
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Error display
Error display
Operation
indicator
lamp
(green)
Wired
Timer
Economy
remote
indicator indicator controller
lamp
lamp
Error code
(orange) (green)
Description
Operation
indicator
lamp
(green)
Wired
Timer
Economy
remote
indicator indicator controller
lamp
lamp
Error code
(orange) (green)
Description
(2)
(9)
Connection unit number error in
wired remote controller system
(3)
(1)
Power supply interruption error
(8)
(2)
(3)
(2)
Indoor unit PCB model
information error
(8)
(3)
Liquid pipe temp. sensor error
(3)
(3)
Indoor unit motor electricity
consumption detection error
(8)
(4)
Current sensor error
(3)
(5)
Manual auto switch error
(8)
(6)
(3)
(9)
Indoor unit power supply error for
fan motor
(10)
(9)
(4)
Trip detection
Indoor unit communication circuit
(wired remote controller) error
(1)
Room temp. sensor error
(9)
(5)
Compressor rotor position
detection error (permanent stop)
(2)
(9)
(7)
Outdoor unit fan motor 1 error
Indoor unit Heat Ex. Middle temp.
sensor error
(4)
(9)
(8)
Outdoor unit fan motor 2 error
Human sensor error
(1)
(9)
(9)
4-way valve error
Indoor unit fan motor error
(3)
(9)
(10)
Coil (expansion valve) error
Drain pump error
●(4)
(10)
(1)
Discharge temp. error
Electric air cleaner reverse VDD
error
●(5)
(10)
(3)
Compressor temp. error
Filter set error
(7)
(10)
(4)
High pressure error
Damper error
(8)
(10)
(5)
Low pressure error
Intake grille error
(13)
(2)
Branch boxes error
[Flexible Multi]
(3)
(4)
(4)
(4)
(5)
(5)
●(5)
●(5)
(5)
(5)
(9)
Indoor unit fan motor 2 error
(Left side fan)
(5)
(10)
Indoor unit fan motor 3 error
(Right side fan)
(5)
(15)
Indoor unit error


Outdoor unit reverse/missing
phase and wiring error
(5)
(6)
(1)
(6)
(3)
Inverter error
(6)
(4)
Active filter error, PFC circuit error
(6)
(5)
Trip terminal L error
(6)
(8)
Outdoor unit rush current limiting
resister temp. rise error
(6)
(10)
Display PCB microcomputers
communication error
(7)
(1)
Discharge temp. sensor error
(7)
(2)
Compressor temp. sensor error
(7)
(3)
Outdoor unit Heat Ex. liquid temp.
sensor error
(7)
(4)
Outdoor temp. sensor error
(5)
Suction Gas temp. sensor error
(7)
(6)
• 2-way valve temp. sensor error
• 3-way valve temp. sensor error


Heat sink temp. sensor error
(7)
 : 0.5s ON / 0.5s OFF
: 0.1s ON / 0.1s OFF
( ) : Number of flashing
[Error code display on the indoor unit (option)]
Outdoor unit main PCB
model information error or
communication error
(2)
(7)
• Discharge pressure sensor error
• Suction pressure sensor error
• High pressure switch error
Control panel
(6)
(7)
Display mode
• Sub-cool Heat Ex. gas inlet
temp. sensor error
• Sub-cool Heat Ex. gas outlet
temp. sensor error
Timer indicator
lamp (orange)
Economy indicator
lamp (green)
Operation indicator
lamp (green)
[Error code display on the wired remote controller (option)]
Check the error
1. If an error occurs, an error icon appears on the “Monitor mode screen”.
Touch the [Status] on the “Monitor mode screen”. The “Status” screen is displayed.
2. Touch the [Error Information] on the “Status” screen. The “Error Information”
screen is displayed. (If there are no errors, the [Error Information] will not be
displayed.)
3. 2-digit numbers correspond to the error code in the table below.
Touch the [Next page] (or [Previous page]) to switch to other connected indoor
units.
1.
2.
Fri 10:00AM
Mode
Set Temp.
Fan
3.
Status
Page 1/ 4
Air Flow Direction
HZ
1
Individual
Economy
Status
Menu
3
Monitor
Page 1/ 5
02-01
Error Code
14,15, 41, 44
Anti Freeze
Off
Unoccupied
Error Information
Address
VT
Off
Next
Page
Error
Information
Back
Next
Page
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