AIR CONDITIONER

AIR CONDITIONER
MANUAL DE INSTALACIÓN
Unidad interior (Tipo cassette)
Solo para personal autorizado.
MANUALE D'INSTALLAZIONE
Unità interna (tipo a cassetta)
Ad uso esclusivo del personale autorizzato.
ΕΓΧΕΙΡΙΔΙΟ ΕΓΚΑΤΑΣΤΑΣΗΣ
Εσωτερική μονάδα (τύπου κασέτας)
Για εξουσιοδοτημένο προσωπικό σέρβις.
MANUAL DE INSTALAÇÃO
Unidade interior (tipo cassete)
Apenas para técnicos autorizados.
РУКОВОДСТВО ПО УСТАНОВКЕ
Внутренний модуль (кассетного типа)
Для уполномоченного персонала.
KURULUM KILAVUZU
İç Ünite (Kaset Tipi)
Yetkili servis personeli içindir.
Deutsch
Français
Español
Unité intérieure (type à cassette)
Pour le personnel agréé uniquement.
Italiano
MANUEL D'INSTALLATION
Ελληνικά
Innengerät (Kassettentyp)
Nur für autorisiertes Personal.
Português
INSTALLATIONSANLEITUNG
Русский
Indoor Unit (Cassette Type)
For authorized service personnel only.
Türkçe
INSTALLATION MANUAL
English
AIR CONDITIONER
[Original instructions]
PART No. 9381798018-02
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AIR CONDITIONER
CAUTION
INSTALLATION MANUAL
Indicates a potentially hazardous situation that may result in
minor or moderate injury or damage to property.
PART No. 9381798018-02
Indoor Unit (Cassette Type)
Read carefully all safety information written in this manual before you install or use the
air conditioner.
Contents
Install the product by following local codes and regulations in force at the place of installation, and the instructions provided by the manufacturer.
1. SAFETY PRECAUTIONS ……………………………………………………………… 1
2. ABOUT THIS PRODUCT ………………………………………………………………… 1
2.1. Special tools for R410A …………………………………………………………… 1
2.2. Accessories ………………………………………………………………………… 1
2.3. Optional parts ……………………………………………………………………… 2
3. GENERAL SPECIFICATION …………………………………………………………… 2
3.1. Selecting the pipe material ………………………………………………………… 2
3.2. Pipe requirement …………………………………………………………………… 2
3.3. Electrical requirement ……………………………………………………………… 3
4. INSTALLATION WORK ………………………………………………………………… 3
4.1. Selecting an installation location ………………………………………………… 3
4.2. Installation dimension ……………………………………………………………… 3
4.3. Installing the unit …………………………………………………………………… 3
4.4. Installing the drain pipe …………………………………………………………… 4
5. PIPE INSTALLATION …………………………………………………………………… 5
5.1. Flare connection (pipe connection) ……………………………………………… 5
5.2. Installing heat insulation …………………………………………………………… 6
6. ELECTRICAL WIRING …………………………………………………………………… 6
6.1. Wiring method ……………………………………………………………………… 7
7. CASSETTE GRILLE INSTALLATION…………………………………………………… 9
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 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.
To avoid getting an electric shock, never touch the electrical components soon after the
power supply has been turned off. After turning off the power, always wait 5 minutes or
more before you touch the electrical components.
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.
8. REMOTE CONTROLLER INSTALLATION …………………………………………… 9
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
12
2. ABOUT THIS PRODUCT
2. 1. Special tools for R410A
Tool name
Gauge manifold
11. OPTION AND OTHER CONNECTABLE DEVICES ………………………………… 12
11.1. Optional parts …………………………………………………………………… 12
11.2. External input and output ……………………………………………………… 12
12. CHECK LIST …………………………………………………………………………… 13
Charge hose
To increase pressure resistance, the hose material and base
size were changed. (R410A)
Vacuum pump
A conventional vacuum pump can be used by installing a
vacuum pump adapter.
(Use of a vacuum pump with a series motor is prohibited.)
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.
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
Indicates a potentially or imminently hazardous situation which,
if not avoided, could result in death or serious injury.
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.
Change from R22 to R410A
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 -0.1 to 5.3 MPa
(-1 to 53 bar) for high pressure.
-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.
Gas leakage detector
Special gas leakage detector for HFC refrigerant R410A.
Copper pipes
It is necessary to use seamless copper pipes and it is desirable that the amount of residual
oil is less than 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
• Use specified R410A piping only. For indoor units, use R410A flare less joint nut assy
only. For outdoor units, use R410A flare nuts only.
Use of pipes, flare less nuts or flare nuts other than specified, may cause product
malfunction, burst piping, or injury due to high internal pressure of the refrigerant cycle
caused by any inflow air.
• 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.
2. 2. 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.
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Name and Shape
Installation manual
Template
(Carton top)
Q’ty
1
Description
3. 1. Selecting the pipe material
For installing indoor unit
Do not use existing pipes.
For installing indoor unit
8
For indoor side pipe joint (Gas pipe)
Coupler heat insulation (Large)
1
Coupler heat insulation (Small)
1
For indoor side pipe joint
(Liquid pipe)
For installing drain pipe
Insulation
1
Hose Band
CAUTION
1
Washer
Drain hose
3. GENERAL SPECIFICATION
(This book)
1
1
Drain hose heat insulation
For installing drain pipe
VP25 (O.D.32, I.D.25)
For installing drain hose
For installing drain pipe
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 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.
Pipe outside diameter [mm (in.)]
Thickness [mm]
6.35 (1/4)
0.8
1
Cable tie (Large)
For connection pipe fixing.
4
Cable tie (Small)
Only one is used for this model.
9.52 (3/8)
0.8
12.70 (1/2)
0.8
15.88 (5/8)
1.0
19.05 (3/4)
1.2
2
3. 2. Pipe requirement
2. 3. Optional parts
Parts name
Wired Remote Controller
CAUTION
Model No.
UTY-RNR*Z1
Summary
For air conditioner operation
(2-wire type)
Wired Remote Controller
UTY-RVN*M
For air conditioner operation
(3-wire type)
IR receiver unit
UTY-LBT*C
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.
Wide panel
UTG-AKXA-W
Wide panel hides the gap
between the ceiling hole and
the Cassette grille.
Panel spacer
UTG-BKXA-W
Installation in a space of 56
mm or greater is possible by
using panel spacer when the
height behind the ceiling is low.
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
Fresh air intake kit
UTZ-VXRA
To take fresh air
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
Refer to the installation manual of the outdoor unit for description of the length of connecting pipe or for difference of its elevation.
Type
18
Diameter [mm (in.)]
Liquid
Gas
6.35 (1/4)
12.70 (1/2)
24
6.35 (1/4)
15.88 (5/8)
30/36/45/54
9.52 (3/8)
15.88 (5/8)
• 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 70-80 %, 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).
For control output port
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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.
Cable
Conductor size
(mm2)
Type
Remarks
Connection cable
1.5 (MIN.)
Type 60245 IEC57
3Wire+Earth (Ground),
1φ230V
Max. Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage
drop is 2% or more.
Conductor size
(mm2)
Type
Remote controller
cable
(2-wire type)
0.33 to 1.25
Sheathed PVC
cable
Remote controller
cable
(3-wire type)
0.33
Correct initial installation location is important because it is difficult to move unit after it is
installed.
4. 2. Installation dimension
• The ceiling rear height as shown in the figure.
Unit: m
Strong and durable ceiling
Remarks
Non-polar 2 wire, twisted
pair
Sheathed PVC
cable
1.8 or more
3 or more
Polar 3 wire
1 or more
Cable
(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.
1.5 or
more
Obstruction
Floor
4. INSTALLATION WORK
WARNING
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.
• This product can be installed at a height of up to 4.2 m. However, if the heights of the
ceiling is higher than 3.2 m or lower than 2.7 m, it is necessary to set the position from
remote controller. (See 8. FUNCTION SETTING)
Unit : mm
Discharge direction setting
• The discharge direction can be selected as shown below.
100 or more*
CAUTION
For installation details, refer to the technical data.
* Please ensure sufficient service access
during installation.
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.
(4 directions)
(3 directions)
• For a 3-way outlet, make sure to perform the function setting on the remote control.
Also, make sure to use the optional shutter plate to block the outlet.
• The ceiling height cannot be set in the 3-way outlet mode. Therefore, do not change the
setting in the setting the ceiling height. (See 8. FUNCTION SETTING)
• When the outlet is shut, be sure to install the optional Air outlet shutter plate kit. For the
details of installation, please refer to installation manual of the kit.
4. 3. Installing the unit
WARNING
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.
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.
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 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.)
Install the unit where ambient temperature does not reach 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 1.8 m.
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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.
130
200
50
130
130
50 - 100
200 - 205
Unit: mm
• Use hanging bolts of M8-M10.
A
B
4.3.2. Body installation
(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.
39
10
130
20 - 45
20 - 45
840(Body frame)
20 - 45 860 - 910(Ceiling opening)
950(Panel frame)
768(Hanging bolt pitch)
20 - 45
950(Panel frame)
860 - 910(Ceiling opening)
840(Body frame)
796(Hanging bolt pitch)
(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.
Dimension (mm)
Type
A
B
18/24
246
256
30/36/45/54
288
298
• Refrigerant piping and drain piping positions.
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.
Unit: mm
80
Hanging bolt (locally purchased)
10
Nut A (locally purchased)
Liquid pipe
293
45
After installing the body,
tighten the nuts.
180
140
342
Washer (Accessories)
• Distribution ducts and fresh air inlet positions.
100
83
100
83
Cut out
Drain pipe
Refrigerant pipe
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
10 × 3.2 hole
352
Detailed diagram of distribution duct
connecting port (4 sides)
114
bolt pitch
232
Unit: mm
4.3.3. Leveling
163
90
Distribution duct
connecting port
Distribution duct connecting port
Distribution duct connecting port
Fresh air inlet
position
Nut B (Double Nut)
(locally purchased)
Unit: mm
10~15
200
Drain pipe
(Connect the
attached drain
hose)
Washer (Accessories)
Gas pipe
95
Cut out
163
Distribution duct connecting port
4×
Fresh air inlet position
Vinyl hoses
3.2 hole
Note:
Conduct proper insulation when connecting the distribution ducts and fresh air inlet.
Insulation
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.
CAUTION
Do not apply adhesive agent on the drain port of the body. (Use the attached drain
hose and connect the drain piping.)
Fresh air inlet position
Note:
When introducing fresh air into the indoor unit, please remove the insulation affixed to the
drain pan.
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 (VP25) [outside diameter 32 mm] 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
Pipe size
Drain pipe
(b) Side view
VP25
VP25 (O.D. 32 mm)
Hanging fittings
Applying area of
adhesive
35
1.5 to 2 m
Hose band
Gauge line
(d) Hose opening view
5-10
20
VP25 (O.D. 32 mm)
Downward gradient 1/100 to 1/50
PROHIBITED:
Wind the attached heat insulation
around the hose band
Make sure the alignment is
on top
(c) Top view
Trap
Rise
Air bleeding
When lifting up drain:
• Height of inclined pipe should be less than 850 mm from the ceiling. A rise dimension over
this range will cause leakage.
• Lift up the pipe vertically at the position of 300 mm or less from the unit.
Downward gradient
300 mm or less
1/100 to 1/50
VP25 (O.D. 32 mm)
local arrangement
850 mm or less
Horizontal or
upward gradient
850 mm or less
4 or less
VP30 (O.D. 38 mm) or more Downward
gradient 1/100 to 1/50
Make sure there
are no gaps
Unit: mm
5. PIPE INSTALLATION
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.
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 VP25) 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
Attached
hose band
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 brazing the pipes, be sure to purge with dry nitrogen gas.
5. 1. Flare connection (pipe connection)
5.1.1. Flaring
Attached drain hose
heat insulation
Locally arranged
vinyl pipe
Attached drain hose
• 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.
Check if [L] is flared uniformly
and is not cracked or scratched.
B
Die
A
Attached heat insulation
Pipe
L
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Dimension A [mm]
Pipe outside diameter
Flare
tool for R410A, clutch
[mm (in.)]
type
0
[mm]
Dimension B-0.4
6.35 (1/4)
9.52 (3/8)
12.70 (1/2)
0 to 0.5
Tightening torque [N·m (kgf·cm)]
6.35 (1/4) dia.
16 to 18 (160 to 180)
9.52 (3/8) dia.
32 to 42 (320 to 420)
9.1
12.70 (1/2) dia.
49 to 61 (490 to 610)
13.2
15.88 (5/8) dia.
63 to 75 (630 to 750)
16.6
19.05 (3/4) dia.
90 to 110 (900 to 1,100)
15.88 (5/8)
19.7
19.05 (3/4)
24.0
When using conventional flare tools to flare R410A pipes, the dimension A should be approximately 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.
Width across
flats
Flare nut [mm (in.)]
Pipe outside diameter [mm
(in.)]
Width across flats of
Flare nut [mm]
6.35 (1/4)
17
9.52 (3/8)
22
12.70 (1/2)
26
15.88 (5/8)
29
19.05 (3/4)
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.
CAUTION
To prevent breaking of the pipe, avoid sharp bends.
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.
Coupler heat insulation
Body
No gap
Be sure to overlap
the insulation
Coupler heat
insulation
CAUTION
If the pipe is bent repeatedly at the same place, it will break.
Must fit tightly against body without any gap.
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.
(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.
Connection pipe (Gas)
Connection pipe
(Liquid)
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 indoor unit and outdoor unit.
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. Erroneous wiring may cause burning of the electric parts.
(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.
CAUTION
Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order to
tighten the flare nut correctly.
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 a hazardous gas if the refrigerant comes into contact with a flame.
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.
Tighten with 2 wrenches.
Holding wrench
Torque wrench
Indoor unit pipe
(Body side)
Flare nut
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.
Connection pipe
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CAUTION
If the indoor unit connection cable and power supply are wired incorrectly, the air
conditioner may be damaged or cause malfunction.
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 transmission or remote controller terminals, as this will damage the product.
Never bundle the power supply cable and transmission cable together. Bundling these
cables together will cause miss operation.
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.
Be careful not to generate a spark as follows for using a flammable refrigerant.
• Do not remove the fuse while power is on.
• Do not disconnect plug from the wall outlet and the wiring while the power is on.
• It is recommended to position the outlet connection in a high position. Place the
cords so that they do not get tangled.
(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 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 [N·m (kgf·cm)]
M4 screw
1.2 to 1.8 (12 to 18)
Screw with
special washer
Wire
Screw with
special
washer
Ring terminal
Wire
Ring terminal
Terminal blocks
Remote controller cable
For 3-wire type
For 2-wire type
30 mm
6. 1. Wiring method
30 mm
6.1.1. Connection diagrams
How to connect wiring to the terminals.
Connection cable to outdoor unit
Earth (ground) line
Power line
Control line
Wired remote controller cable
2-wire type
(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.
Strip 30 mm
3-wire type
Red
White
or
Loop
Red
White
Black
Cable
Screw with
special washer
Screw with
special washer
Cable end (Loop)
Cable end (Loop)
Terminal block
6.1.2. Connection cable preparation
Tightening torque [N·m (kgf·cm)]
Power supply cable or connection cable
M3 screw
Keep the earth (ground) wire longer than the other wires.
30
Cable
Do not apply branch wiring. It may cause electric shock or fire.
0.5 to 0.6 (5 to 6)
For “Group control” or “Multiple remote control”, refer to the following figure on how
to connect to the indoor unit terminal.
mm
GOOD
Earth (ground)
wire
40
mm
or
re
mo
PROHIBITED
Power supply cable or
connection cable
• Use a 4-core wire cable.
Different diameter
Connect to 1 side
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.
ip
Str
10
mm
Ring terminal
Sleeve
(3) Use the specified wires, connect them securely, and fasten them so that there is no
stress placed on the terminals.
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6.1.3. Wiring procedure
6.1.4. Connection wiring
Connection cable
CAUTION
Be careful not to mistake the power supply cable and connection wires when installing.
Control line
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.
Power line
Wiring connecting port
Connection
cable
Outdoor unit
Earth
(ground)
Remote controller cable
Wiring cover
DIP switch
Control box cover
Control box
Print circuit board
(PCB)
2-wire type
3-wire type
White
White
Black
Red
(2) Thread each cable through the holes or indents of the cabinet and connect the wires.
(3) After wiring is complete, secure the cables with the cable clamps.
Red
Cable clamp
Power supply cable or connection cable
Remote
controller
“2 WIRE”
Remote
controller
Connecting the
Optional parts
Remote
controller
cable
Set to “3 WIRE”
1
2
3
Factory setting
Remote
controller
cable
*Earth (Ground) the remote controller if it has a earth (ground) wire.
CAUTION
Detail (a)
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.
Cable tie (small)
(Accessory)
Y1
Be sure to refer to the connection diagram for the correct field wiring. Wrong wiring
causes malfunction of the unit.
Y2
Y3
1
2
Remote
controller
cable
Detail (b)
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(4) Replace the Control box cover and Wiring cover. Securely tighten the screws.
CAUTION
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.
9. 4. Function Details
Filter sign
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
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.
7. CASSETTE GRILLE INSTALLATION
• 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.
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
20
9. 1. Turning on the power
Standard (2500 hours)
01
Long interval (4400 hours)
02
Short interval (1250 hours)
03
No indication
♦
Setting
value
Setting description
00
Standard (3.0 m : 18/24 type)
(3.2 m : 30/36/45/54 type)
01
High ceiling (3.5 m : 18/24 type)
(4.2 m : 30/36/45/54 type)
02
Low ceiling (2.7 m)
♦
The ceiling height values are for the 4-way outlet.
Do not change this setting in the 3-way outlet mode.
CAUTION
Outlet directions
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.
9. 2. Setting method
Select the appropriate number of outlet directions according to the installation conditions.
(♦... Factory setting)
Function
number
22
See installation manual of remote controller.
Setting
value
00
01
Setting description
4-way
3-way
♦
Vertical wind direction adjustment range
9. 3. RC Sensor 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)
00
Select the appropriate ceiling height according to the place of installation.
(♦... Factory setting)
• Install according to the installation manual for Remote controller.
9. FUNCTION SETTING
Setting Description
Ceiling height
Function
number
8. REMOTE CONTROLLER INSTALLATION
Setting
Value
A
The room temperature is detected by the indoor unit
temperature sensor.
Indoor unit
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
23
Setting
Value
Setting Description
00
Standard
01
Upward
♦
Ceiling
B. Remote controller setting
The room temperature is detected by the remote
controller temperature sensor.
B
UP
Indoor unit
Standard
Upward
Swing range
Outlet cross section
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Room temperature control for indoor unit sensor
Room temperature sensor switching
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)
(Only for wireless remote controller)
When using the Wired remote controller temperature sensor, change the setting to "Both"
(01).
(♦... Factory setting)
Setting
Value
00
Function Number
30
31
(For cooling) (For heating)
Setting Description
Standard setting
01
No correction 0.0 °C (0 °F)
02
-0.5 °C (-1 °F)
03
-1.0 °C (-2 °F)
04
-1.5 °C (-3 °F)
05
-2.0 °C (-4 °F)
06
-2.5 °C (-5 °F)
07
-3.0 °C (-6 °F)
08
-3.5 °C (-7 °F)
42
♦
More
Cooling
Less
Heating
Both
(♦... Factory setting)
Setting
Value
Setting Description
-4.0 °C (-8 °F)
+0.5 °C (+1 °F)
00
A
11
+1.0 °C (+2 °F)
12
+1.5 °C (+3 °F)
01
B
13
+2.0 °C (+4 °F)
02
C
14
+2.5 °C (+5 °F)
03
D
15
+3.0 °C (+6 °F)
16
+3.5 °C (+7 °F)
17
+4.0 °C (+8 °F)
Setting
value
Setting description
00
No correction
01
No correction 0.0 °C (0 °F)
02
-0.5 °C (-1 °F)
03
-1.0 °C (-2 °F)
04
-1.5 °C (-3 °F)
05
-2.0 °C (-4 °F)
06
-2.5 °C (-5 °F)
07
-3.0 °C (-6 °F)
08
-3.5 °C (-7 °F)
09
-4.0 °C (-8 °F)
10
+0.5 °C (+1 °F)
11
+1.0 °C (+2 °F)
12
+1.5 °C (+3 °F)
13
+2.0 °C (+4 °F)
14
+2.5 °C (+5 °F)
15
+3.0 °C (+6 °F)
16
+3.5 °C (+7 °F)
17
+4.0 °C (+8 °F)
♦
(Only for wireless remote controller)
The indoor unit custom code can be changed.
Select the appropriate custom code.
10
Less
Cooling
More
Heating
44
♦
External input control
"Operation/Stop" mode or "Forced stop" mode can be selected.
(♦... Factory setting)
Function
Number
46
Setting
Value
Setting Description
00
Operation/Stop mode 1
01
(Setting prohibited)
02
Forced stop mode
03
Operation/Stop mode 2
♦
Room temperature sensor switching (Aux.)
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)
♦
Function
Number
48
More
Cooling
Less
Heating
Setting Description
00
Both
01
Wired remote controller
♦
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)
49
Less
Cooling
More
Heating
Setting
Value
Indoor unit fan control for energy saving for cooling
Function
Number
Setting
Value
Setting description
00
Disable
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.
Auto restart
Enable or disable automatic restart after a power interruption.
Switching functions for external output terminal
(♦... Factory setting)
40
Indoor unit
01
09
Ensure that the Thermo Sensor icon is displayed on the remote controller screen.
(♦... Factory setting)
Function
Number
Setting Description
00
Remote controller custom code
Function
Number
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”.
35
36
(For cooling) (For heating)
Setting
Value
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
Room temperature control for wired remote controller sensor
Function number
Function
Number
Setting
Value
Functions of the external output terminal can be switched.
(♦... Factory setting)
Setting Description
00
Enable
01
Disable
♦
* 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
60
Setting
Value
Setting description
00
Operation status
09
Error status
10
Indoor unit fan operation status
11
External heater
♦
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Setting record
Remote controller address
 Record any changes to the settings in the following table.
Function
number
Setting
Setting Value
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
44
Remote controller custom code
46
External input control
Cooling
(1) 2-wire type
DIP 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.
(2) 3-wire type
DIP 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.
Heating
Setting
Heating
48
Room temperature sensor switching (Aux.)
Indoor unit fan control for energy saving for cooling
60
Switching function for external outlet terminal
Type of switch
ON
Remote controller
address
Setting
example 0
0 to 15
1
2
3
4
RC AD
Example
49
Setting range
Cooling
If 4 indoor units are connected.
Indoor unit
Indoor unit
RC AD SW
0
RC AD SW
1
Indoor unit
Indoor unit
RC AD SW
2
RC AD SW
3
After completing the function setting, be sure to turn off the power and turn it on again.
10. SPECIAL INSTALLATION METHODS
Remote
controller
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.
Set the R.C. address (DIP switch setting)
Set the R.C. address of each indoor unit using the DIP switches on the indoor unit
circuit board. (See the following table and figure.)
The DIP switches are normally set to make the R.C. address 00.
Indoor unit
R.C. address
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Use an insulated screwdriver to set the dip switches.
10. 1. Setting the address
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
10. 2. Setting the DIP switch
See installation manual of remote controller.
10. 3. Group control
1
2
3
CAUTION
Y1
Group control is only possible between units with remote controllers of the same type.
To confirm the type of remote controller, see the back of the remote controller or
“2.3. Optional parts”.
Y2
Y3
1
2
With a single remote controller, up to 16 units can be simultaneously operated.
I.U.
A
ON
1
2
3
RC AD
4
I.U.
B
C
I.U.
D
I.U.
E
Master
A, B, C, D, E : Remote controller cable. (Refer to 3.3. Electrical requirement.)
A+B+C+D+E ≤ 500 m.
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● Dry contact terminal
10. 4. Multiple remote control
When a power supply is unnecessary at the input device you want to connect, use the Dry
contact terminal.
PCB
Up to 2 remote controllers can be used to operate the indoor units.
CAUTION
*1
Multiple installation method described above is prohibited to combine 3 Wired type
with 2 Wired Type.
I.U.
I.U.
Terminal
(External in)
Connected device
*1: The switch can be used on the following condition: DC 12 V to 24 V, 1 mA to 15 mA.
A
A
B
Operation behavior
● Input signal type
Master
ON
Master Slave
OFF
A, B : Remote controller cable. (Refer to 3.3. Electrical requirement.)
A ≤ 500 m, A+B ≤ 500 m
Edge
● When function setting is “Operation/Stop” mode 1.
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
Operation
ON → OFF
Stop
● When function setting is “Forced stop” mode.
Input signal
1
2
3
Command
OFF → ON
Forced stop
ON → OFF
Normal
Y1
* When the forced stop is triggered, indoor unit stops and Operation/Stop operation by a
remote controller is restricted.
Y2
Y3
1
2
● When function setting is "Operation/Stop" mode 2.
Input signal
Terminal
(External in)
CN48
CN65
CN47
(IR receiver) (External in/out PCB) (External out)
11. 1. Optional parts
Command
OFF → ON
Operation
ON → OFF
Stop (R.C. disabled)
11.2.2. External output
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-LBTYC (IR Receiver)
CN48
UTY-XWZXZG (Connect wire)
CN47*1
UTZ-VXRA (Fresh air intake)
CN47*1
UTY-XCSX (External input and output PCB)
(UTY-XCSX)*2
CN65*3
*1: For external output terminal setting, refer to Function No.60 in "8. FUNCTION SETTING".
*2: Refer to the installation manual of the External input and output PCB.
*3: Various settings are available by using the optional External input and output PCB.
11. 2. External input and output
• A twisted pair cable (22AWG) should be used. Maximum length of cable is 25 m (82 ft.).
• 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
PCB
Connected
device
CN47
Relay (locally purchased)
or
● When displaying "Operation/Stop"
PCB
11.2.1. External input
Resistor
• 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 150 m (492 ft.).
• 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
CN47
LED
Connected device
Operation behavior
*If function setting "60" is set to "00"
Function setting
00
09
60
10
Connected device
11
Status
Stop
Operation
Normal
Error
Indoor unit fan stop
Indoor unit fan operation
Output voltage
0V
DC 12 V
0V
DC 12 V
0V
DC 12 V
External heater OFF
0V
External heater ON
DC 12V
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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
(1) Is operation of each button on the remote controller normal?
(2) Do not air flow direction louvers operate normally?
(3) Is the drain normal?
(4) Is there any error noise and vibration during operation?
• Do not operate the air conditioner test run for a long time.
See installation manual of remote controller
For how to carry out a test run, refer to 6.4. Maintenance (Other Settings).
→ 6.4.5. Test Run. (installation manual of remote controller)
14. CUSTOMER GUIDANCE
Solder and insulate the connected parts.
Explain the following to the customer in accordance with the operating manual:
• 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.
(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.
PCB
1
2
3
15. ERROR CODES
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. See the lamp blinking patterns and error codes in the table
below. An error display is displayed only during operation.
Error display
External
input/output PCB
communication wire
External
output wire
Clamp
Clamp
Wired
remote
TIMER ECONOMY
OPERATION
controller
lamp
lamp
lamp (green)
Error code
(orange)
(green)
Description
Y1
(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
(2)
(1)
(2)
(2)
Indoor unit capacity error
(2)
(3)
Combination error
Y2
(1)
Y3
1
2
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
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]
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)
(9)
Connection unit number error in
wired remote controller system
Does water drain easily from the
indoor units?
(3)
(1)
Power supply interruption error
Water leakage
Are the wires and pipes all connected completely?
No operation, heat or burn damage
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?
After installation is completed, has
the proper operation and handling
been explained to the user?
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Error display
Wired
remote
TIMER ECONOMY
OPERATION
controller
lamp
lamp
lamp (green)
Error code
(orange)
(green)
Error display
Description
(3)
(2)
Indoor unit PCB model
information error
(3)
(5)
Manual auto switch error
(10)
Indoor unit communication circuit
(wired remote controller) error
(1)
Room temp. sensor error
(2)
Indoor unit Heat Ex. Middle temp.
sensor error
Wired
remote
TIMER ECONOMY
OPERATION
controller
lamp
lamp
lamp (green)
Error code
(orange)
(green)
Description
• Discharge pressure sensor error
• Suction pressure sensor error
• High pressure switch error
(8)
(6)
(9)
(4)
Trip detection
(9)
(5)
Compressor rotor position
detection error (permanent stop)
(9)
(7)
Outdoor unit fan motor 1 error
(4)
(9)
(8)
Outdoor unit fan motor 2 error
Human sensor error
(5)
(1)
(9)
(9)
4-way valve error
Indoor unit fan motor error
Coil (expansion valve) error


(10)
(3)
Drain pump error
(9)
(5)
Discharge temp. error


(1)
(7)
Damper error
(10)
(5)


(3)
Compressor temp. error
Indoor unit error
(10)
(5)

(4)
High pressure error

(10)
(6)
(10)
(5)
Low pressure error
(13)
(2)
Branch boxes error
[Flexible Multi]
(3)
(4)
(4)
(4)
(15)
(1)
Outdoor unit reverse/missing
phase and wiring error
Outdoor unit main PCB
model information error or
communication error
(6)
(2)
(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
(7)
(5)
Suction Gas temp. sensor error
(7)
(6)
• 2-way valve temp. sensor error
• 3-way valve temp. sensor error
(7)
(7)
Heat sink temp. sensor error
Display mode
 : 0.5s ON / 0.5s OFF
: 0.1s ON / 0.1s OFF
( ) : Number of flashing
• Sub-cool Heat Ex. gas inlet
temp. sensor error
• Sub-cool Heat Ex. gas outlet
temp. sensor error
(8)
(2)
(8)
(3)
Liquid pipe temp. sensor error
(8)
(4)
Current sensor error
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