Fujitsu AUWG30LRLA Installation Manual

Fujitsu AUWG30LRLA Installation Manual
INSTALLATION MANUAL
INDOOR UNIT (Cassette Type)
For authorized service personnel only.
English
AIR CONDITIONER
安裝說明書
室內機組(嵌入式)
只僅授權服務人員。
PART No. 9378590144
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INSTALLATION MANUAL
PART No. 9378590144
INDOOR UNIT (Cassette Type)
The product is not explosion proof, and therefore should not be installed in explosive
atmosphere.
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.
Contents
This product contains no user-serviceable parts. Always consult experienced service
technicians for repairing.
1.
SAFETY PRECAUTIONS ......................................................................................... 1
When moving or relocating the air conditioner, consult experienced service technicians
for disconnection and reinstallation of the product.
2.
ABOUT THIS PRODUCT .......................................................................................... 1
2.1. Precautions for using R410A refrigerant ........................................................... 1
2.2. Special tool for R410A ...................................................................................... 1
2.3. Accessories ....................................................................................................... 1
2.4. Optional parts.................................................................................................... 2
3.
INSTALLATION WORK ............................................................................................. 2
3.1. Selecting an installation location ....................................................................... 2
3.2. Installation dimension ....................................................................................... 2
3.3. Installation the unit ............................................................................................ 3
4.
PIPE INSTALLATION ................................................................................................ 4
4.1. Selecting the pipe material................................................................................ 4
4.2. Pipe requirement............................................................................................... 4
4.3. Flare connection (pipe connection) ................................................................... 4
4.4. Installing heat insulation.................................................................................... 5
5.
INSTALLING DRAIN PIPES ..................................................................................... 5
6.
ELECTRICAL WIRING.............................................................................................. 6
6.1. Wiring system diagram ..................................................................................... 6
6.2. Connection cable preparation ........................................................................... 7
7.
REMOTE CONTROLLER INSTALLATION ............................................................... 7
7.1. Remote controller holder installation................................................................. 7
8.
CASSETTE GRILLE INSTALLATION ....................................................................... 8
9.
FUNCTION SETTING ............................................................................................... 8
6.3. Connection of wiring ......................................................................................... 7
10. SPECIAL INSTALLATION METHODS .................................................................... 10
11. TEST RUN .............................................................................................................. 10
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 of your property.
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.
2. ABOUT THIS PRODUCT
2.1. Precautions for using R410A refrigerant
WARNING
Do not introduce any substance other than the prescribed refrigerant into the refrigeration cycle. If air enters the refrigeration cycle, the pressure in the refrigeration cycle will
become abnormally high and cause the piping to rupture.
If there is a refrigerant leak, make sure that it does not exceed the concentration limit.
If a refrigerant leak exceeds the concentration limit, it can lead to accidents such as
oxygen starvation.
Do not touch refrigerant that has leaked from the refrigerant pipe connections or other
area. Touching the refrigerant directly can cause frostbite.
If a refrigerant leak occurs during operation, immediately vacate the premises and thoroughly ventilate the area. If the refrigerant comes in contact with a flame, it produces a
toxic gas.
12. CHECK LIST ........................................................................................................... 11
13. OPTIONAL KIT INSTALLATION (OPTION) ............................................................ 11
14. CUSTOMER GUIDANCE ....................................................................................... 11
2.2. Special tool for R410A
15. ERROR CODES ..................................................................................................... 11
WARNING
To install a unit that uses R410A refrigerant, use dedicated tools and piping materials that have been manufactured specifically for R410A use. Because the pressure of
R410A refrigerant is approximately 1.6 times higher than the R22, failure to use dedicated piping material or improper installation can cause rupture or injury. Furthermore, it
can cause serious accidents such as water leakage, electric shock, or fire.
Tool name
Changes
Gauge manifold
The pressure in the refrigerant system is extremely
high and cannot be measured with a conventional
gauge. To prevent erroneous mixing of other refrigerants, the diameter of each port has been changed. It
is recommended to use a gauge manifold with a high
pressure display range of –0.1 to 5.3 MPa and a low
pressure display range of –0.1 to 3.8 MPa.
Charging hose
To increase pressure resistance, the hose material
and base size were changed.
(The charging port thread diameter for R410A is 1/2
UNF 20 threads per inch.)
Vacuum pump
A conventional vacuum pump can be used by installing a vacuum pump adapter.
Be sure that the pump oil does not back flow into
the system. Use one capable for vacuum suction of
–100.7 kPa (5 Torr, –755 mmHg).
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 non-professional or
improper installation of the product might 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 an electric shock or
a 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.
Installation must be performed in accordance with regulations, codes, or standards for
electrical wiring and equipment in each country, region, or the installation place.
CAUTION
Indicates a potentially hazardous situation that may result in
minor or moderate injury or damage to property.
Read carefully all of 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.
Gas leakage detector
Special gas leakage detector for R410A refrigerant.
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 to fall,
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.
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).
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Name and Shape
Q’ty
Description
1
—
Operating Manual
Insulation kit for High
humidity
UTZ-KXRA
—
External connect kit
UTY-XWZX
For control input/output port
Fresh air intake kit
UTZ-VXRA
Wide panel
1
Panel spacer
For installing indoor unit
Template
Washer
UTG-AKXA-W
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.
(This book)
Installation Manual
(Carton top)
To take fresh air
Wide panel hides the gap
between the ceiling hole
and the cassette grille.
Wired remote controller is recommended using simultaneous twin or triple connection.
1
3. INSTALLATION WORK
8
Coupler heat insulation (Large)
For installing indoor unit
Especially, the installation place is very important for the split type air conditioner because
it is very difficult to move from place to place after the first installation.
For indoor side pipe joint (Gas pipe)
3.1. Selecting an installation location
1
Coupler heat insulation (Small)
1
For indoor side pipe joint
(Liquid pipe)
WARNING
Select installation locations that can properly support the weight of the indoor unit.
Install the units securely so that they do not topple or fall.
For installing drain pipe
Insulation
CAUTION
1
Drain hose
1
For installing drain pipe
VP25 (O.D.32, I.D.25)
For installing drain hose
Hose Band
1
Drain hose heat insulation
For installing drain pipe
Do not install the indoor unit in the following areas:
• Area with high salt content, such as at the seaside. It will deteriorate metal parts,
causing the parts to fail or the unit to leak water.
• Area filled with mineral oil or containing a large amount of splashed oil or steam, such
as a kitchen. It will deteriorate plastic parts, causing the parts to fail or the unit to leak
water.
• Area that generates substances that adversely affect the equipment, such as sulfuric
gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed joints to
corrode, which can cause refrigerant leakage.
• Area that can cause combustible gas to leak, contains suspended carbon fibers or
flammable dust, or volatile inflammables such as paint thinner or gasoline. If gas leaks
and settles around the unit, it can cause a fire.
• Area where animals may urinate on the unit or ammonia may be generated.
Do not install where there is the danger of combustible gas leakage.
1
Do not install the unit near a source of heat, steam, or flammable gas.
3
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.)
For electrical wiring
Cable tie (Large)
If children may approach the unit, take preventive measures so that they cannot reach
the unit.
Remote controller
• Decide the mounting position with the customer as follows:
1
—
2
—
1
—
Battery
Remote controller holder
(1) Install the indoor unit in a location having sufficient strength to support the weight of
the indoor unit.
(2) The inlet and outlet ports should not be obstructed; the air should be able to blow all
over the room.
(3) Leave the space required to service the air conditioner.
(4) Locate where the air can be distributed evenly throughout the room by the unit.
(5) Install the unit where connection to the outdoor unit is easy.
(6) Install the unit where the connection pipe can be easily installed.
(7) Install the unit where the drain pipe can be easily installed.
(8) Install the unit where noise and vibration is not amplified.
(9) Take servicing, etc., into consideration and leave the spaces. Also install the unit
where the filter can be removed.
3.2. Installation dimension
• The ceiling rear height as shown in the figure.
Tapping screw
(M3 × 12 mm)
Strong and durable ceiling
—
1.8 or more
3 or more
2.4. Optional parts
Parts name
Wired Remote Controller
Model No.
Summary
UTY-RNN*M
For air conditioner operation
UTR-YDZK
Install the plate at outlet
when carrying out 3-way
direction operation
1 or more
2
1.5 or
more
Obstruction
Floor
Unit: m
Air outlet shutter plate
• This product can be installed at a height of up to 4.2 m (30 model: 3.6 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 9. FUNCTION SETTING)
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Discharge direction setting
• Distribution ducts and fresh air inlet positions.
Distribution duct connecting port
Fresh air inlet
position
Drain pipe
Refrigerant pipe
Distribution duct connecting port
(4 directions)
100
83
Cut out
185
90
100
83
10 × 2.5 hole
352
Detailed diagram of distribution duct
connecting port (4 sides)
88
Burling hole
pitch
250
(3 directions)
Unit : mm
70
Cut out
185
*Please ensure
sufficient service
access during
installation.
Distribution duct connecting port
100 or more*
Distribution duct
connecting port
• The discharge direction can be selected as shown below.
4 × 2.5 hole
Fresh air inlet position
• 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 9. FUNCTION SETTING)
Notes:
Conduct proper insulation when connecting the distribution ducts and fresh air inlet.
Insulation
• When the outlet is shut, be sure to install the optional air outlet shutter plate kit. For the
details of installation, please refer to the installation manual of kit.
3.3. Installation the unit
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.
Fresh air inlet position
3.3.1. 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.
200
50
288
298
950(Panel frame)
(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.
10
40
840(Body frame)
860 - 910(Ceiling opening)
130
130
80
699(Hanging bolt pitch)
795(Hanging bolt pitch)
130
50 - 100
140 - 145
20 - 45
20 - 45
20 - 45
950(Panel frame)
860 - 910(Ceiling opening)
840(Body frame)
20 - 45
Notes:
When sucking in the fresh air, please detach the insulation affixed to the drain pan.
Unit: mm
• Refrigerant piping and drain piping positions.
3.3.2. 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 decorative panel, you can make fine adjustment of the height of the body. For details, refer to
the installation manual of the decorative panel.
WARNING
Perform final tightening by tightening the double nut firmly.
10
80
Be sure to install the body horizontally and adjust the height below the body and the
ceiling surface properly.
200
Hanging bolt
Nut A
60
Washer
180
140
358
Gas pipe
278
After installing the body,
tighten the nuts.
Washer
Nut B (Double Nut)
10~15
Liquid pipe
Drain pipe
(Connect the
attached drain
hose)
Unit: mm
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3.3.3. 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
4.3. Flare connection (pipe connection)
4.3.1. 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.
Vinyl hoses
Check if [L] is flared uniformly
and is not cracked or scratched.
B
4. PIPE INSTALLATION
Die
A
CAUTION
Be careful that foreign matter (oil, water, etc.) does not enter the piping 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.
4.1. Selecting the pipe material
L
Pipe
Dimension A [mm]
Pipe outside diameter
Flare tool for R410A, clutch
[mm (in.)]
type
6.35 (1/4)
9.1
9.52 (3/8)
13.2
12.70 (1/2)
CAUTION
Do not use existing pipes.
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.
0 to 0.5
Thicknesses of Annealed Copper Pipes (R410A)
Pipe outside diameter [mm (in.)]
Thickness [mm]
6.35 (1/4)
0.80
9.52 (3/8)
0.80
12.70 (1/2)
0.80
15.88 (5/8)
1.00
19.05 (3/4)
1.20
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
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
4.3.2 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.
If the pipe is bent repeatedly at the same place, it will break.
4.2. Pipe requirement
4.3.3. Pipe connection
CAUTION
CAUTION
Refer to the installation manual of the outdoor unit for description of the length and the
diameter of connecting pipe or for difference of its elevation.
Diameter [mm (in.)]
16.6
15.88 (5/8)
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.
0
Dimension B-0.4
[mm]
Liquid
9.52 (3/8)
Gas
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 0.045W/(m·K) or less (at 20 °C).
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)
(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 following table for the
flare nut tightening torques.)
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CAUTION
Pipe size
Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order to
tighten the flare nut correctly.
Drain pipe
VP25 (O.D. 32 mm)
Hanging fittings
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.
1.5 to 2 m
Tighten with 2 wrenches.
Holding wrench
Flare nut
Torque wrench
VP25 (O.D. 32 mm)
Downward gradient 1/100 to 1/50
PROHIBITED:
Indoor unit pipe
(Body side)
Connection pipe
Trap
Rise
Air bleeding
Flare nut [mm (in.)]
Tightening torque [N·m (kgf·cm)]
6.35 (1/4) dia.
16 to 18 (160 to 180)
When lifting up drain:
9.52 (3/8) dia.
32 to 42 (320 to 420)
12.70 (1/2) dia.
49 to 61 (490 to 610)
• Height of inclined pipe should be less than 850 mm from the ceiling. A rise dimension
over this range will cause leakage.
15.88 (5/8) dia.
63 to 75 (630 to 750)
19.05 (3/4) dia.
90 to 110 (900 to 1,100)
• Lift up the pipe vertically at the position of 300 mm or less from the unit.
300 mm or less
Downward gradient
1/100 to 1/50
VP25 (O.D. 32 mm)
local arrangement
4.4. Installing heat insulation
850 mm or less
Horizontal or
upward gradient
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.
850 mm or less
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.
VP30 (O.D. 38 mm) or more
Downward gradient 1/100 to 1/50
Coupler heat insulation
Body
No gap
Be sure to overlap the
insulation
Coupler heat
insulation
CAUTION
Must fit tightly against body without any gap.
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. (See Notes)
(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
5. INSTALLING DRAIN PIPES
WARNING
Attached drain hose
heat insulation
Locally arranged
vinyl pipe
• 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.
Attached drain hose
• 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.)
Notes:
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.
Attached heat insulation
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(a) Top view
(b) Side view
VP25
Applying area of
adhesive
35
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) wire.
Improper earthing (grounding) work can cause electric shocks.
Hose band
Install the remote controller cable and bus wire so as not to be direct touched with your
hand.
Gauge line
4 or less
(d) Hose opening view
5-10
20
Wind the attached heat insulation
around the hose band
Make sure the alignment is
on top
(c) Top view
(1) Use ring terminals with insulating sleeves as shown in the figure below to connect to
the terminal block.
(2) Securely clamp the ring terminals to the wires using an appropriate tool so that the
wires do not come loose.
(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) See the table 1 for the terminal screw tightening torques.
ip
Str
Make sure there
are no gaps
10
mm
Ring terminal
Unit: mm
Sleeve
Notes:
Check for drainage
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.
Screw with
special washer
Screw with special
washer
Ring terminal
Wire
Ring
terminal
Wire
Terminal
board
Terminal block
Table 1
Tightening torque [N·m (kgf·cm)]
6. ELECTRICAL WIRING
1.2 to 1.8 (12 to 18)
M5 screw
2.0 to 3.0 (20 to 30)
WARNING
Cable
Cable size (mm )
Type
Remarks
Connection cable
1.5 (MIN.)
Type 60245 IEC57
2Cable+Earth (Ground),
1φ230V
2
M4 screw
Use ring terminals and tighten the terminal screws to the specified torques, otherwise, abnormal overheating may be produced and possibly cause heavy damage
inside the unit.
Max. Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage
drop is 2% or more.
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.
6.1. Wiring system diagram
Connection cable to outdoor unit
Earth (Ground) line
Before starting work, check that power is not being supplied to the indoor unit and
outdoor unit.
Power line
Use the included transmission 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.
Control line
For wiring, use the prescribed type of wires, connect them securely, making sure that
there are no external forces of the wires applied to the terminal connections. Improperly connected or secured wires can cause serious accidents such as overheating the
terminals, electric shock, or fire.
Wired remote controller cable (Option)

Red
White
Black
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 blocks. 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.
Indoor
unit side
*Ground the remote controller if it has a earth (ground) wire.
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.
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Thread the cable tie through the
hole and tighten securely
CAUTION
Tighten the indoor unit connection cable and power supply indoor and outdoor
unit, terminal board connections firmly with the terminal board screws. Faulty
connection may cause a fire.
If the indoor unit connection cable and power supply are wired incorrectly, the
air conditioner may be damaged.
Connect the indoor unit connection cable by matching the numbers of the outdoor
and indoor units terminal board numbers as shown in terminal label.
Earth (Ground) both the indoor and outdoor, units by attaching an earth (ground)
cable.
CAUTION
Be sure to refer to the above diagram for do correct field wiring. Wrong wiring causes
malfunction of the unit.
Cable tie (Large)
5 mm and above
Unit shall be earthed (grounded) in compliance with the applicable local and national cables.
Cut off the excess
Detail (b)
(2) Please fix the connection cable with cable clamp. And then install the wire cover with
screws.
Check local electrical rules and also any specific wiring instructions or limitation.
(c)
6.2. Connection cable preparation
Keep the earth (ground) wire longer than the other wires.
Bind securely
mm
20
Earth (ground)
wire
mm
30
re
mo
or
Detail (c)
Power supply cable or
connection cable
• Use a 4-core wire cable.
(3) Install control box cover.
6.3. Connection of wiring
CAUTION
(1) Remove the control box cover and install each connection wire. Please firmly tighten
connection cable and remote controller cable with the attached cable tie.
(a)
Wiring connecting
port
(b)
Do not wire the remote controller cable together with or parallel to the connection cables, and power supply cables of the INDOOR UNIT and OUTDOOR UNIT,
It may cause erroneous operation.
Connection cable
clamp
7. REMOTE CONTROLLER INSTALLATION
..
CAUTION
Wiring cover
Control box cover
Remote controller connecting port
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
Cable clamp
Power terminal blocks
Remote controller terminal blocks
Thread the cable tie through the
hole and tighten securely
Check that the indoor unit correctly receives the signal from the remote controller,
then install the remote controller holder.
Select the remote controller holder selection site by paying careful attention to
the following:
Avoid places in direct sunlight.
Select a place that will not be affected by the heat from a stove, etc.
7.1. Remote controller holder installation
• Install the remote controller a maximum distance of 7 m from the remote control receiver. However, when installing the remote controller, check that it operates correctly.
• Install the remote controller holder to a wall, pillar, etc. with the tapping screw.
Remote controller holder fixing
Remote controller mounting
(1) Set
Remote controller
holder
(2) Push
Cable tie (Large)
Cut off the excess
Tapping screw
(M3 x 12 mm)
10mm and above
Remote
controller
Detail (a)
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8. CASSETTE GRILLE INSTALLATION
• Install according to the installation manual of the cassette grille.
• Be sure to confirm there is no gap between the panel and main unit after installing the
cassette grille.
9. FUNCTION SETTING
Perform the “FUNCTION SETTING” according to the installation conditions using the
remote controller.
CAUTION
Confirm whether the wiring work for outdoor unit or branch box has been finished.
Confirm that the cover for the electrical enclosure on the outdoor unit is in place.
• This procedure changes to the function settings used to control the indoor unit according to
the installation conditions. Incorrect settings can cause the indoor unit to malfunction.
• After the power is turned on, perform the “FUNCTION SETTING” according to the
installation conditions using the remote controller.
• The settings may be selected between the following two: Function number or Setting
value.
STEP 2
Selecting the function number and setting value
(1) Press the SET TEMP. ( ) ( ) buttons to select the function number. (Press the
MODE button to switch between the left and right digits.)
(2) Press the FAN button to proceed to setting the
value. (Press the FAN button again to return to
the function number selection.)
Function number
(3) Press the SET TEMP. ( ) ( ) buttons to select the setting value. (Press the MODE button
to switch between the left and right digits.)
Setting
value
(4) Press the TIMER MODE button, and START/
STOP button, in the order listed to confirm the
settings.
(5) Press the RESET button to cancel the function setting mode.
(6) After completing the FUNCTION SETTING, be sure to turn off the power and turn it on
again.
• Settings will not be changed if invalid numbers or setting values are selected.
• Refer to the installation manual enclosed with the remote controller when the wired
remote controller (option) is used.
CAUTION
After turning off the power, wait 10 seconds or more before turning on it again.
Entering the function setting mode
While pressing the FAN button and SET TEMP. (
button to enter the function setting mode.
) simultaneously, press the RESET
STEP 1
Selecting the remote controller custom code
The Function Setting does not become active unless the power is turned off then
on again.
(1) 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)
Setting description
Use the following steps to select the custom code of the remote controller. (Note that the air conditioner cannot receive
a custom code if the air conditioner has not been set for the
custom code.)
The custom codes that are set through this process are applicable only to the signals in the FUNCTION SETTING. For
details on how to set the custom codes through the normal
process, refer to “Remote controller custom code”.
(1) Press SET TEMP. (
)(
) button to change the custom code between
. Match the code on the display to the air conditioner custom code.
(Initially set to ) (If the custom code does not need to be selected, press the MODE
button and proceed to STEP 2.)
(2) Press the TIMER MODE button and check that the indoor unit can receive signals at
the displayed custom code.
If you do not know the air conditioner custom code setting, try each of the custom codes
(
) until you find the code which operates the air conditioner.
00
01
11
No indication
02
03
(2) Ceiling height
Select the appropriate ceiling height according to the place of installation.
(... Factory setting)
Setting description

Function number
Standard (3.2m)
High ceiling (4.2m)
( 30 model : 3.6m )
(3) Press the MODE button to accept the custom code, and proceed to STEP 2.
The remote controller resets to custom code A when the batteries in the remote controller
are replaced. If you use a custom code other than custom code A, reset the custom code
after replacing the batteries.
Setting value
Long interval (4,400 hours)
Short interval (1,250 hours)

Function number
Standard (2,500 hours)
Setting value
00
20
Low ceiling (2.7m )
01
02
In case of cassette type models:
The ceiling height values are for the 4-way outlet. Do not change this setting in the 3-way
outlet mode. 7000, 9000 Btu/h models cannot be installed in high ceilings. Do not change
this setting.
(3) Outlet directions
Select the appropriate number of outlet directions according to the installation conditions.
(... Factory setting)

Setting description
Function number
4-way
3-way
22
Setting value
00
01
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(4) Vertical airflow direction range control
(9) Remote controller custom code
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)
(Only for wireless remote controller)
The indoor unit custom code can be changed.
Select the appropriate custom code.
Setting Description
Function Number
Standard

23
Upward
(... Factory setting)
Setting Value
00
Setting description

Function number
Setting value
44
00
01
02
03
A
B
C
D
01
 If function setting 20 is set at “High ceiling” mode, “Upward” (01) is recommended.
Ceiling
(10) External input control
“Operation/Stop” mode or “Forced stop” mode can be selected.
(... Factory setting)
Setting description

Standard
46
Forced stop mode
Upward
Setting value
00
Operation/Stop mode
(Setting prohibited)
UP
01
02
(11) Indoor unit fan control for energy saving for cooling
Swing range
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)
Outlet cross section
(5) Room temperature control for cooling
Setting description
Depending on the installed environment, correction of the room temperature sensor may
be required. Select the appropriate control setting according to the installed environment.
(... Factory setting)
Setting description
Function number
Setting value
00
Standard

Function number
Slightly lower control
30
Lower control
Higher control
01

Function number
Disable
Enable
49
Setting value
00
01
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
03
Setting record
 Record any changes to the settings in the following table.
(6) Room temperature control for heating
Setting
Depending on the installed environment, correction of the room temperature sensor may
be required. Select the appropriate control setting according to the installed environment.
(... Factory setting)
(1) Filter sign
Setting description
Function number
00
Standard

Setting value
Lower control
31
Slightly higher control
Higher control
(2) Ceiling height
(3) Outlet directions
01
(4) Vertical airflow direction range control
02
(5) Room temperature control for cooling
03
Setting Value
(6) Room temperature control for heating
(7) Auto restart
(7) Auto restart
(8) Room temperature sensor switching
Enable or disable automatic restart after a power interruption.
(... Factory setting)
Setting description
Function number
Enable

40
Disable
Setting value
00
01
* 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.
(8) Room temperature sensor switching
(Only for wired remote controller)
When using the wired remote controller temperature sensor, change the setting to “Both”
(01).
(... Factory setting)
Setting description

Indoor unit
Both
Function number
42
Setting value
00
01
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.
(9) Remote controller custom code
(10) External input control
(11) Indoor unit fan control for energy saving for cooling
After completing the FUNCTION SETTING, be sure to turn off the power and turn it on
again.
Selecting the remote controller custom code
When 2 or more air conditioners are installed in a room
and the remote controller is operating an air conditioner
other than the one you wish to set, change the custom
code of the remote controller to operate only the air conditioner you wish to set (four selections possible).
• Confirm the setting of the remote controller custom code
and the function setting. If these are not confirmed, the
remote controller cannot be used to operate for the air
conditioner.
Selecting the remote controller custom code
Use the following steps to select the custom code of the remote controller. (Note that the
air conditioner cannot receive a custom code if the air conditioner has not been set for the
custom code.)
(1) Press the START/STOP button until only the clock is displayed on the remote controller display.
(2) Press the MODE button for at least 5 seconds to display the current custom code (initially
set to ).
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(3) Press SET TEMP. ( ) ( ) button to change the custom code between
Match the code on the display to the air conditioner custom code.
.
Example : unit number 03
ON
(4) Press the MODE button again to return to the clock display. The custom code will be
changed.
If no buttons are pressed within 30 seconds after the custom code is displayed, the system returns to the original clock display. In this case, start again from step 1.
The remote controller resets to custom code A when the batteries in the remote controller are replaced. If you use a custom code other than custom code A, reset the custom
code after replacing the batteries.
If you do not know the air conditioner custom code setting, try each of the custom codes
) until you find the code which operates the air conditioner.
(
1
This possible only the wired remote controller (option).
4
Notes:
Be sure to set consecutive R.C. addresses.
The indoor units cannot be operated if a number is skipped.
10.2. Dual remote controllers
Indoor unit
CAUTION
When setting DIP switches, do not touch any other parts on the circuit board directly
with your bare hands.
Be sure to turn off the main power.
1 2 3
Remote controller cable
When earth (ground) wire
is necessary
Total wire length : 300 m
10.1. Group control system
1 2 3
CAUTION
Group control cannot be used with a flexible multi type outdoor unit.
Group control is only possible between the following indoor units.
Model names: A**G__, R*G__, H*G__ (*: Any given alphabet.)
Do not mix with other indoor units, or the system will show an error and will not operate.
Maximum connectable Indoor units : 16 units
A number of indoor units can be operated at the same time using a single remote controller.
(1) Wiring method (indoor unit to remote controller)
Indoor unit 2 Indoor unit 3
1 2 3
3
• 2 separate remote controllers can be used to operate the indoor units.
• The timer and self-diagnosis functions cannot be used on the secondary unit of remote
controller.
(1) Wiring method (indoor unit to remote controller)
10. SPECIAL INSTALLATION METHODS
Indoor unit 1
2
1 2 3
Primary unit
Secondary unit
Remote
controller
Remote
controller
(2) Remote controller DIP switch 1 setting
Set the remote controller DIP switch 1-No. 2 according to the following table.
( Refer to the installation manual of the wired remote controller.)
DIP SW 1-No. 2
Primary unit
Secondary unit
Indoor unit 4
1 2 3
1 2 3
OFF
ON
1 2 3
11. TEST RUN
CHECK ITEMS
1 2 3
(1) Is operation of each button on the remote controller normal?
(2) Do not airflow 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.
Bus wire
Remote
controller cable
Remote controller
When earth (ground) wire is necessary
(2) DIP switch setting (Indoor unit)
Set the unit number of each indoor unit using the DIP switches on the indoor unit
circuit board. (See the following table and figure.)
The DIP switch is initially set to 00.
Indoor unit
1
2
3
4
5
6
7
8
9
0
A
B
C
D
E
F
Unit number
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
DIP SWITCH No.
1
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
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
[Operation method]
• For the operation method, refer to the operating manual.
• The outdoor unit may not operate depending on the room temperature.
In this case, press the TEST RUN button on the remote controller while the air conditioner is running. (Point the transmitter section of the remote controller toward the air
conditioner and press the TEST RUN button with the tip of a ball-point pen, etc.)
Transmitter section
TEST RUN buttton
• To end test operation, press the remote controller START/STOP button.
(When the air conditioner is run by pressing the TEST RUN button, the OPERATION
indicator lamp and TIMER indicator lamp on the indoor unit will simultaneously flash
slowly.)
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[Using the wired remote control] (Option)
• For the operation method, refer to the operating manual.
Stop the air conditioner operation.
Press the MODE button and the FAN button simultaneously for 2 seconds or more to start
the test run.
15. ERROR CODES
If you use a wireless remote controller, the lamp on the photo detector unit will output error
codes by way of blinking patterns. If you use a wired type remote controller, error codes
will appear on the remote controller display. See the lamp blinking patterns and error
codes in the table. An error display is displayed only during operation.
Error display
Test run display
Press the START/STOP button to stop the test run.
If “C0” appears in the unit number display, there is a remote controller error. Refer to the
installation manual included with the remote controller.
Unit number
Error code
Content
• Incompatible indoor unit is connected
• Group control system error
Indoor unit  remote controller communication error
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
CHECK BOX
OPERATION TIMER ECONOMY
indicaindicaindicator
tor lamp
tor lamp
lamp
(green)
(orange)
(green)
●(1)
●(1)
◊
●(1)
●(2)
◊
●(1)
●(5)
◊
●(2)
●(2)
◊
●(2)
●(3)
◊
●(2)
●(4)
◊
●(3)
●(1)
◊
●(3)
●(2)
◊
●(3)
●(5)
◊
●(4)
●(1)
◊
●(4)
●(2)
◊
●(5)
●(1)
◊
●(5)
●(3)
◊
●(5)
●(7)
◊
●(5)
●(15)
◊
●(6)
●(2)
◊
●(6)
●(3)
◊
●(6)
●(4)
◊
●(6)
●(5)
◊
●(6)
●(10)
◊
●(7)
●(1)
◊
●(7)
●(2)
◊
●(7)
●(3)
◊
●(7)
●(4)
◊
●(7)
●(5)
◊
●(7)
●(6)
◊
●(7)
●(7)
◊
Has the indoor unit been installed correctly?
Has there been a check for gas leaks (refrigerant pipes)?
Has heat insulation work been completed?
Does water drain easily from the indoor units?
Are the wires and pipes all connected completely?
Is the connection cable the specified thickness?
Are the inlets and outlets free of any obstacles?
After installation is completed, has the proper operation and
handling been explained to the user?
13. OPTIONAL KIT INSTALLATION (OPTION)
WARNING
Regulation of cable differs from each locality, refer in accordance with local rules.
This air conditioner can be connected with the following optional kits.
Option type
Connector No.
UTZ-VXRA (Fresh air intake)
CN6
UTY-RNN*M (Wired remote controller)
─
UTY-XWZX (External input)
CN102
UTY-XWZX (External output)
CN103
Wired remote controller
(CN6)
(CN102)
(CN103)
14. CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature adjustment, timer,
airflow switching, and other remote controller unit operations.
(2) Air filter removal and cleaning, and how to use the air louvers.
(3) Give the operating and installation manuals to the customer.
(4) If the wireless remote controller custom code is changed from A to B, C, or D, it will
change back to A when the batteries in the remote controller are replaced. Explain to
the customer how to program the wireless remote controller for the correct custom
code.
●(8)
●(2)
◊
●(8)
●(3)
◊
Wired
remote
controller
Error code
Description
Serial communication error
Wired remote controller
communication error
Check run unfinished
Indoor unit capacity error
Combination error
• Connection unit number error
(indoor unit or branch unit)
[Flexible Multi]
Power supply interruption error
Indoor unit PCB model
information error
Manual auto switch error
Inlet air temp. sensor error
Indoor unit Heat Ex. Middle
temp. sensor error
Indoor unit fan motor error
Drain pump error
Damper error
Indoor unit error
Outdoor unit main PCB model
information error or
communication error
Inverter error
Active filter error, PFC circuit
error
Trip terminal L error
Display PCB microcomputers
communication error
Discharge temp. sensor error
Compressor temp. sensor error
Outdoor unit Heat Ex. liquid
temp. sensor error
Outdoor temp. sensor error
Suction Gas temp. sensor error
• 2-way valve temp. sensor error
• 3-way valve temp. sensor error
Heat sink temp. sensor error
• Sub-cool Heat Ex. gas inlet
temp. sensor error
• Sub-cool Heat Ex. gas outlet
temp. sensor error
Liquid pipe temp. sensor error
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●(8)
●(4)
●(8)
●(6)
◊
●(9)
●(4)
◊
●(9)
●(5)
◊
●(9)
●(7)
◊
●(9)
●(8)
◊
●(9)
●(9)
◊
●(9)
●(10)
◊
●(10)
●(1)
◊
●(10)
●(3)
◊
●(10)
●(4)
◊
●(10)
●(5)
◊
●(13)
●(2)
◊
Display mode
Current sensor error
◊
• Discharge pressure sensor
error
• Suction pressure sensor error
• High pressure switch error
Trip detection
Compressor rotor position
detection error (permanent stop)
Outdoor unit fan motor error
Outdoor unit fan motor 2 error
4-way valve error
Coil (expansion valve ) error
Discharge temp. error
Compressor temp. error
High pressure error
Low pressure error
Branch boxes error
[Flexible Multi]
● : 0.5s ON / 0.5s OFF
◊ : 0.1s ON / 0.1s OFF
( ) : Number of flashing
[Troubleshooting with the indoor unit display]
ECONOMY indicator
(green)
TIMER indicator
(orange)
OPERATION indicator
(green)
MANUAL AUTO button
[Troubleshooting at the remote controller LCD] (option)
This is possible only on the wired remote controller.
[Self-diagnosis]
If an error occurs, the following display will be shown.
(“Er” will appear in the set room temperature display.)
Unit number of
indoor unit
Error code
EX. Self-diagnosis
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