Fujitsu AUAG12LVLA Installation Manual

Fujitsu AUAG12LVLA Installation Manual
AIR CONDITIONER
INSTALLATION MANUAL
INDOOR UNIT (Compact cassette type)
For authorized service personnel only.
PART No. 9379124065-03
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INSTALLATION MANUAL
PART No. 9379124065-03
INDOOR UNIT (Compact cassette type)
Contents
1. SAFETY PRECAUTIONS............................................................................................. 2
2. ABOUT THE UNIT ........................................................................................................ 2
2.1. Precautions for using R410A refrigerant ........................................................... 2
2.2. Special tool for R410A ...................................................................................... 2
2.3. Accessories ....................................................................................................... 2
2.4. Cassette grille accessories ............................................................................... 3
2.5. Optional parts.................................................................................................... 3
3. INSTALLATION WORK ................................................................................................ 3
3.1. Selecting an installation location ....................................................................... 3
3.2. Installation dimension ....................................................................................... 4
3.3. Installation the unit ............................................................................................ 4
4. INSTALLING DRAIN PIPES ......................................................................................... 5
5. PIPE INSTALLATION ................................................................................................... 6
5.1. Selecting the pipe material................................................................................ 6
5.2. Pipe requirement............................................................................................... 6
5.3. Flare connection (pipe connection) ................................................................... 6
5.4. Installing heat insulation.................................................................................... 7
6. ELECTRICAL WIRING ................................................................................................. 7
6.1. Wiring system diagram ..................................................................................... 8
6.2. Connection cable preparation ........................................................................... 8
6.3. Connection of wiring ......................................................................................... 8
7. REMOTE CONTROLLER SETTING ............................................................................ 9
7.1. Load batteries (R03/LR03 × 2) ......................................................................... 9
7.2. Installing the remote controller holder ................................................................ 9
8. CASSETTE GRILLE INSTALLATION ........................................................................... 9
8.1. Remove the intake grille ................................................................................... 9
8.2. Installing the grille to indoor unit ....................................................................... 9
8.3. Attach the intake grille ..................................................................................... 10
9. FUNCTION SETTING ................................................................................................ 10
9.1. Operation method ........................................................................................... 10
9.2. Function setting............................................................................................... 11
9.3. Remote controller custom code setting........................................................... 11
9.4. Special installation methods ........................................................................... 12
10. TEST RUN .............................................................................................................. 12
11. CHECK LIST............................................................................................................. 12
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 of your property.
2. ABOUT THE UNIT
2.1. Precautions for using R410A refrigerant
WARNING
Do not introduce any substance other than the prescribed refrigerant into the refrigeration cycle. If air enters the refrigeration cycle, the pressure in the refrigeration cycle will
become abnormally high and cause the piping to rupture.
If there is a refrigerant leak, make sure that it does not exceed the concentration limit.
If a refrigerant leak exceeds the concentration limit, it can lead to accidents such as
oxygen starvation.
Do not touch refrigerant that has leaked from the refrigerant pipe connections or other
area. Touching the refrigerant directly can cause frostbite.
If a refrigerant leak occurs during operation, immediately vacate the premises and thoroughly ventilate the area. If the refrigerant comes in contact with a flame, it produces a
toxic gas.
2.2. Special tool for R410A
WARNING
To install a unit that uses R410A refrigerant, use dedicated tools and piping materials that have been manufactured specifically for R410A use. Because the pressure of
R410A refrigerant is approximately 1.6 times higher than the R22, failure to use dedicated piping material or improper installation can cause rupture or injury. Furthermore, it
can cause serious accidents such as water leakage, electric shock, or fire.
Tool name
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).
12. OPTIONAL KIT INSTALLATION (OPTION) .............................................................. 13
13. CUSTOMER GUIDANCE ......................................................................................... 13
14. ERROR CODES ....................................................................................................... 13
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.
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.
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.
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.
Name and Shape
Q’ty
Description
Operating Manual
1
Install the product by following local codes and regulations in force at the place of installation, and the instructions provided by the manufacturer.
This product is part of a set constituting an air conditioner. The product must not be
installed alone or be installed with non-authorized device by the manufacturer.
Always use a separate power supply line protected by a circuit breaker operating on all
wires with a distance between contact of 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).
Installation Manual
(This book)
1
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.
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For indoor side pipe joint (Gas pipe)
Coupler heat insulation (Large)
1
Coupler heat insulation (Small)
1
For mounting the Hook Wire (for
metals)
2
For indoor side pipe joint
(Liquid pipe)
For installing indoor unit
Special nut A (Large flange)
Screw [pitch small]
(M4 × 10 mm)
Screw [pitch large]
(M4 × 10 mm)
4
For mounting the L angle and Hook
wire (for resins)
4
2.5. Optional parts
Special nut B (Small flange)
For installing indoor unit
4
Template
(Carton top)
1
Parts name
For ceiling openings cutting
Also used as packing
For installing drain pipe
Drain hose
1
Hose Band
For installing drain hose
1
Model No.
Summary
Wired remote controller
UTY-RNN*M
Unit control is performed by
wired remote controller
Simple Remote Controller
UTY-RSN*M
For air conditioner operation
Air outlet shutter plate
UTR-YDZB
Install the plate at outlet
when carrying out 3-way
direction operation
Insulation kit for High
humidity
UTZ-KXGC
Install when the condition under
the roof is over 80% in humidity
and over 30°C in temperature.
External connect kit
UTY-XWZX
For control input/output port
Fresh air intake kit
UTZ-VXAA
To take fresh air
Wired remote controller is recommended using simultaneous twin or triple connection.
Drain hose insulation
For installing drain pipe
3. INSTALLATION WORK
1
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 air conditioner operation
Remote controller
3.1. Selecting an installation location
Decide the mounting position together with the customer as follows.
1
WARNING
For remote controller unit
Battery
2
For installing the remote controller
Remote controller holder
1
Tapping screw
2
Cable tie
For mounting the remote controller
holder
For electrical wiring
2
Wire clamper
1
For electrical wiring
Do not install the unit near a source of heat, steam, or flammable gas.
2.4. Cassette grille accessories
Name and Shape
Q’ty
Description
For covering connector
Tapping Screw
(M4 × 12 mm)
For mounting cassette grille
4
For mounting connector cover
1
L angle
2
Hook wire
Install the indoor unit, outdoor unit, power supply cable, connection 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.)
If children under 10 years old may approach the unit, take preventive measures so that
they cannot reach the unit.
Use the “Insulation kit for high humidity” (option), when the condition under the roof is
over 80% in humidity and over 30°C in temperature. Otherwise, there is a risk of condensation on the ceiling.
1
Tapping Screw
(M5 × 12 mm)
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 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) This part is not furnished for AUT* series
Connector cover
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 mounting the Hook Wire to the
cassette grille
(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.
For suspending the cassette grille
2
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3.3.1. Position the ceiling hole and hanging bolts
3.2. Installation dimension
Ceiling openings and hanging bolt installation diagram.
• The ceiling rear height as shown in the figure.
WARNING
Strong and durable ceiling
When fastening the hangers, make the bolt positions uniform.
530 (Hanging bolt position)
150~200
75
• This product can be installed at a height of up to 3,000mm.
However, 7000, 9000 Btu/h model can not be installed in high places.
Perform the Function Setting on the remote control in accordance with the installed height.
(See 9.2. Function setting)
250
Min.450
Unit : mm
700 (Cassette grille)
570(Indoor unit)
580 – 660 (Ceiling openings)
1,000
or more
Obstruction
Floor
540 (Hanging bolt position)
1,000
or more
1,800
or more
262
or more
250
service access
Discharge direction setting
• The discharge direction can be selected as shown below.
Min.450
100 or more*
(4 directions)
Control box
Ceiling
Liquid pipe Gas pipe
(3 directions)
Unit : mm
Unit : mm
• 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 9.2. 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 kit.
30
58
123
262
215
114
*Please ensure
sufficient
service access
during installation.
30
Drain pipe (O.D.ø26.1)
99
102
40
Be sure to keep sufficient space in the designated position for future maintenance.
3.3.2. Body installation
(1) Install special nut A, then special nut B onto the hanging bolt.
(2) Raise the body and mount its hooks onto the hanging bolt between the special nuts.
(3)Turn special nut B to adjust the height of the body.
WARNING
Perform final tightening by tightening the double nut firmly.
3.3. Installation the unit
WARNING
Be sure to install the body horizontally and adjust the height below the body and the
ceiling surface properly.
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.
Special nut A
After installing the
body, tighten the nuts.
Hook
Special nut B
30 or more
Hanging bolt
19
Ceiling
Unit : mm
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
Vinyl hoses
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Attach hose band
4. INSTALLING DRAIN PIPES
(Accessories)
Install the knob facing upward
WARNING
Do not insert the drain piping into the sewer where sulfurous gas occurs. (Heat exchange erosion may occur)
Locally installed
PCV pipe
Insulate the parts properly so that water will not drip from the connection parts.
Attach drain hose
(Accessories)
Check for proper drainage after installation 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 assembly to connect the drain piping)
• Install the drain pipe with downward gradient (1/100 to 1/50) and so there are no rises or
traps in the pipe. Unsmooth draining caused by accumulated water flow in the pipe may
cause clogged drain.
• Use general hard polyvinyl chloride pipe (VP25) [outside diameter 32mm].
• When the pipe is long, install supporters.
• Do not perform air bleeding. Drainage may be blown out.
• Always heat insulate indoor section of drain pipe.
• If it is impossible to have sufficient gradient of pipe, perform drain lift-up.
Attach heat insulation
(Accessories)
(a) Top view
(b) Side view
5~10
VP25 (O.D. 32 mm)
Hanging fittings
19
Applying area
of adhesive 35
20
Pipe size
Drain pipe
Unit: mm
Hose band
Gauge line
1.5 to 2 m
4 or less
20 Transparent
visible portion
(c) Hose opening view
Wind the attached heat insulation
around the hose band
VP25 (O.D. 32 mm)
Downward gradient 1/100 to 1/50
Make sure the alignment is on top
・Top view
PROHIBITED:
Make sure there
are no gaps
Rise
Trap
Air bleeding
When lifting up drain:
• Height of inclined pipe should be less than 700 mm from the ceiling. A rise dimension
over this range will cause leakage.
• Lift up the pipe vertically at the position of 300 mm from the unit.
300 mm
Downward gradient
1/100 or more
VP25 (O.D. 32 mm) or more
(local arrangement)
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
The drain pump operates when operating in the cooling mode.
Drain pipe
Wire cover
Screw
700 mm or less
Horizontal or
upward gradient
700 mm or less
VP30 (O.D. 38 mm)
Downward gradient 1/100 or more
Watering pot
Installation procedure
1) Install the attached drain hose to the drain port of the body. Install the hose band from
the top of the hose within the shown in the figure area.
2) Use vinyl adhesive agent to glue the drain piping (PVC pipe VP25 ) to the drain hose
assembly.
(Apply color adhesive agent evenly until the gauge line and seal)
3) Check the drainage. (See separate diagram)
4) Install the heat insulation.
5) Use the attached heat insulation to insulate the drain port and hose band.
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5.3. Flare connection (pipe connection)
5. PIPE INSTALLATION
5.3.1. Flaring
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.
5.1. Selecting the pipe material
• 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.
CAUTION
Check if [L] is flared uniformly
and is not cracked or scratched.
B
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.
Die
A
L
Pipe
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.
Dimension A [mm]
Flare tool for R410A,
clutch type
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.
Pipe outside diameter
[mm (in.)]
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.
6.35 (1/4)
9.1
9.52 (3/8)
13.2
• Thicknesses of copper pipes used with R410A are as shown in the table.
• Never use copper pipes thinner than those indicated in the table even if they are available
on the market.
Thicknesses of Annealed Copper Pipes (R410A)
Pipe outside diameter [mm (in.)]
Thickness [mm]
6.35 (1/4)
0.80
9.52 (3/8)
0.80
12.70 (1/2)
15.88 (5/8)
19.05 (3/4)
12.70 (1/2)
0 to 0.5
0
Dimension B-0.4
[mm]
16.6
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.
Pipe outside diameter
[mm (in.)]
Width across flats of
Flare nut [mm]
0.80
6.35 (1/4)
17
1.00
9.52 (3/8)
22
1.20
12.70 (1/2)
26
15.88 (5/8)
29
19.05 (3/4)
36
Width across
flats
5.2. Pipe requirement
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.
• Use pipe with water-resistant heat insulation.
5.3.2. 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
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).
To prevent breaking of the pipe, avoid sharp bends.
If the pipe is bent repeatedly at the same place, it will break.
5.3.3. 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.
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Connection pipe
(Gas)
6. ELECTRICAL WIRING
Connection pipe
(Liquid)
Indoor unit
Cable
Cable size (mm2)
Connection cable
1.5
Type
Remarks
Type 60245 IEC57 3 cable+Earth (Ground), 1φ 230V
Max. Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage
drop is 2% or more.
WARNING
(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
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.
Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order to
tighten the flare nut correctly.
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.
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.
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.
Tighten with 2 wrenches.
Holding wrench
Flare nut
Torque wrench
Indoor unit pipe
(Body side)
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 or branch box. 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.
Connection pipe
Flare nut [mm (in.)]
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)
12.70 (1/2) dia.
49 to 61 (490 to 610)
15.88 (5/8) dia.
63 to 75 (630 to 750)
19.05 (3/4) dia.
90 to 110 (900 to 1,100)
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 leakage breaker. In addition, install the earth leakage breaker so that the
entire AC main power supply is cut off at the same time. Otherwise, electric shock or fire
could result.
Always connect the earth (ground) wire.
Improper earthing (grounding) work can cause electric shocks.
Install the remote controller cable and bus wire so as not to be direct touched with your
hand.
5.4. 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.
Must fit tightly against body without any gap.
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.
(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
Coupler heat insulation
10
mm
Ring terminal
Body
Sleeve
No gap
Be sure to overlap the
insulation
Coupler heat
insulation
Screw with
special washer
No gap
Screw with special washer
Ring terminal
Wire
Wire
Ring
terminal
Terminal
board
Terminal block
Table 1
Tightening torque
M4 screw
1.2 to 1.8 N·m (12 to 18 kgf·cm)
WARNING
Use ring terminals and tighten the terminal screws to the specified torques, otherwise, abnormal overheating may be produced and possibly cause heavy damage
inside the unit.
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6.1. Wiring system diagram
6.3. Connection of wiring
(1) Remove the control box cover and install each connection cable.
Connection cable to outdoor unit or BRANCH BOX
INDOOR UNIT
TERMINAL
Screw
OUTDOOR UNIT
or BRANCH BOX
Control box cover
Power line
Control line
Connect it to the
specified terminal.
Earthing (Grounding) line
(2) After wiring is complete, secure the remote controller cable and connection cable with
the attached the cable tie and the clamper.
Wired remote controller cable (Option)
Red
White
Black
Wire clamper (accessory)
Bind securely
Indoor
unit side
Connection cable
Detail(a)
CAUTION
(a)
Wired remote controller
cable (option)
Tighten the indoor unit connection cable and power supply indoor and outdoor
unit, branch box 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,
branch box and indoor units terminal board numbers as shown in terminal label.
Earth (Ground) both the indoor and outdoor, branch box units by attaching earth
(ground) cable.
Unit shall be earthed (grounded) in compliance with the applicable local and national cables.
Thread the cable tie
through the hole and
tighten securely
CAUTION
Be sure to refer to the above diagram for do correct field wiring. Wrong wiring causes
malfunction of the unit.
Cable tie (accessory)
Cut of the excess
Check local electrical rules and also any specific wiring instructions or limitation.
Wire clamper
(accessory)
Bind securely
6.2. Connection cable preparation
Keep the earth (ground) wire longer than the other wires.
20
Cable tie (accessory)
Cut of the excess
mm
Connection
cable
Earth (Ground)
wire
m
m
40
or
ore
Wired remote
controller cable
(option)
Power supply cable
or connection cable
m
Thread the cable tie through
the hole and tighten securely
(3) Install control box cover.
• Use a 4-core wire cable.
CAUTION
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,
BRANCH BOX. It may cause erroneous operation.
.
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7. REMOTE CONTROLLER SETTING
Refer to the installation manual enclosed with the remote controller when the wired
remote controller (option ) is used.
7.1. Load batteries (R03/LR03 × 2)
(1) Press and slide the battery compartment lid on the reverse side to open it. Slide in the
mark.
direction of the arrow while pressing the
(2) Insert batteries.
Be sure to align the battery polarities (+ -) correctly.
(3) Close the battery compartment lid.
CAUTION
Take care to prevent infants from accidentally swallowing batteries.
8. CASSETTE GRILLE INSTALLATION
• Install according to the Installation instruction sheet of cassette grille.
• Be sure to confirm there is no gap between the grille and main unit after installing the
cassette grille.
8.1. Remove the intake grille
(1) Slide the 2 grille hooks.
Grille hook
(2) Open the intake grille and remove.
When not using the Remote Controller for an extended period, remove the batteries to
avoid possible leakage and damage to the unit.
If leaking battery fluid comes in contact with your skin, eyes, or mouth, immediately
wash with copious amounts of water, and consult your physician.
Dead batteries should be removed immediately and disposed of properly, either in a
battery collection receptacle or to the appropriate authority.
Do not attempt to recharge dry batteries.
NOTES:
• Never mix new and used batteries, or batteries of different types.
• Batteries should last about 1 year under normal use. If the Remote Controller’s operating
range becomes appreciably reduced, replace the batteries and press the RESET button
with the tip of a ballpoint pen or other small object.
7.2. Installing the remote controller holder
8.2. Installing the grille to indoor unit
CAUTION
Check that the indoor unit correctly receives the signal from the remote controller, then
install the remote controller holder.
(1) Install the cassette grille on the indoor unit.
“DRAIN” mark
“PIPE” mark
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.
• Install the remote controller with a distance of 7 m between the remote controller and
the photocell as the criteria. However, when installing the remote controller, check that it
operates positively.
• Install the remote controller holder to a wall, pillar, etc., with the tapping screw.
(1) Mount the holder.
• Align the stamped marks on the cassette grille to the pipe and the drain of the indoor unit.
Screws
(2) Set the remote controller.
Insert
Press in
(3) To remove the remote controller (when use at hand).
Slide up
Pull out
Screw
CAUTION
Use only the supplied screws to install the cassette grille.
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Sealant
5~7
Indoor unit
Ceiling
9. FUNCTION SETTING
CAUTION
Cassette grille
Confirm whether the wiring work for outdoor unit has been finished.
Confirm whether the cap for electric control box on the outdoor unit is close.
No gap between ceiling and
cassette grille around entire
perimeter
(2) Connect the connector.
Wire (display): WHITE
Wire (louver): WHITE
Wire (louver): RED
• 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 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.
• 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.
9.1. Operation method
• While pressing the “FAN” button and “SET TEMP. (
“RESET” button to enter the function setting mode.
Indoor unit side
)” simultaneously, press the
STEP 1
Remote controller custom code setting
Use the following steps to select the custom code of the remote controller.
(Note that the air conditioner cannot receive a signal if the air conditioner has not been set
for the matching 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 9.3. Remote controller custom code setting.
• Arrange the wires as illustrated below.
(1) Press the “SET TEMP. (
(3) Attach the connector cover.
Screw
Connector cover
)(
)” 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.
(3) Press the “MODE” button to accept the custom code, and proceed to STEP 2.
8.3. Attach the intake grille
The installation is the reverse of “REMOVING THE INTAKE GRILLE”.
The intake grille can be rotated and installed 4 ways to suit the user’s preference.
CAUTION
The louver angle cannot be changed if the power is not on. (If moved by hand, it may
be damaged.)
The grille assembly is directionally relative to the air conditioner body.
Install so that there is no gap between the grille assembly and the air conditioner body.
The cassette grille equips with an accessory to prevent the grill completely open. Be
sure to read the INSTALLATION SHEET included with the cassette grille before installation.
The air conditioner custom code is factory-set to A.
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.)
(3) Press the “SET TEMP. ( ) ( )” buttons to select the setting value. (Press the
“MODE” button to switch between the left and right digits.)
(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.
Function number
Setting value
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(7) Room temperature sensor switching
CAUTION
(Only for Wired remote controller)
When using the Wired remote controller temperature sensor, change the setting to “Both”
(01).
(... Factory setting)
After turning off the power, wait 30 seconds or more before turning on it again. The
FUNCTION SETTING doesn’t become effective if it doesn’t do so.
9.2. Function setting
Function number
• Function Details
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)
11
Setting description
00
Indoor unit
01
Both
42
(1) Filter sign
Function number
Setting value
Setting value
Setting description
00
Standard (2,500 hours)
01
Long interval (4,400 hours)
02
Short interval (1,250 hours)
03
No indication
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
(8) Remote controller custom code
(Only for wireless remote controller)
The indoor unit custom code can be changed.
Select the appropriate custom code.
(... Factory setting)

Function number
Setting value
(2) Ceiling height
44
Select the appropriate ceiling height according to the place of installation.
(... Factory setting)
Function number
20
Setting value
Setting description
00
Standard (2.7m)
01
High ceiling (3.0m)

00
A
01
B
02
C
03
D

(9) External input control
(... Factory setting)
Function number
Setting value
Setting description
00
Operation/Stop mode
46
01
(Setting forbidden)
02
Forced stop mode
(3) Outlet directions
Select the appropriate number of outlet directions according to the installation conditions.
(... Factory setting)
22
Setting description
“Operation/Stop” mode or “Forced stop” mode can be selected.
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.
Function number

Setting value
Setting description
00
4-way
01


Setting record
 Record any changes to the settings in the following table.
Setting
Setting Value
(1) Filter sign
3-way
(2) Ceiling height
(4) Room temperature sensor control for cooling
(3) Outlet directions
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)
(4) Room temperature sensor control for cooling
Function number
30
Setting value
Setting description
00
Standard
01
Slightly lower control
02
Lower control
03
Higher control
(5) Room temperature sensor control for heating
(6) Auto restart
(7) Room temperature sensor switching

(8) Remote controller custom code
(9) External input control
After completing the FUNCTION SETTING, be sure to turn off the power and turn it on
again.
(5) Room temperature sensor control for heating
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)
Function number
31
Setting value
Setting description
00
Standard
01
Lower control
02
Slightly higher control
03
Higher control

Remote controller custom code setting
Use the following steps to select the custom code of the remote controller. (Note that the
air conditioner cannot receive a signal if the air conditioner has not been set for the matching custom code.)
(6) Auto restart
Enable or disable automatic restart after a power interruption.
(... Factory setting)
Function number
40
Setting value
Setting description
00
Enable
01
Disable
9.3. Remote controller custom code setting
When two 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 (4 selections
possible).
When two or more air conditioners are installed in a room, please contact your retailer to
set the individual air conditioner custom codes.

* 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.
(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 ).
(3) Press the “SET TEMP. (▲) (▼)” button to change the custom code between
. Match the code on the display to the air conditioner custom code.
(4) Press the “MODE” button again to return to the clock display. The custom code will be
changed.
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9.4.2. Dual remote controllers
• 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)
Indoor unit
1 2 3
Remote controller cable
When earth (ground)
wire is necessary
• 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.
• Depending on the remote controller, the custom code may return to custom code A
when the batteries are replaced. In this case, if you use a code other than A, reset the
code after replacing the batteries.
If you do not know the air conditioner custom code setting, try each code
) until you find the code which operates the air conditioner.
(
1 2 3
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.
DIP SW 1-No. 2
Primary unit
Secondary unit
9.4. Special installation methods
OFF
ON
This possible only the wired remote controller (Option)
10.TEST RUN
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.
9.4.1. Group control system
[Operation method]
Group control cannot be used when using it by the multi type.
Depending on your installation, choose from the following:
A number of indoor units can be operated at the same time using a single remote controller.
Indoor
unit 4
By the wired remote controller
• For the operation method, refer to the installation manual and the operating manual of
the wired remote controller.
The Operation indicator lamp and Timer indicator lamp will simultaneously flash during the
test run mode.
Heating test run will begin in a few minutes when HEAT is selected by the remote controller
[reverse cycle model only].
Remote controller
When earth (ground) wire is necessary
(2) R.C. address setting (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
DIP SWITCH No.
6
00
01
02
03
04
05
1
OFF
ON
OFF
ON
OFF
ON
7
06
OFF
ON
ON
OFF
8
07
ON
ON
ON
OFF
9
10
08
OFF
OFF
OFF
ON
09
ON
OFF
OFF
ON
11
10
OFF
ON
OFF
ON
1
2
3
4
5
2
OFF
OFF
ON
ON
OFF
OFF
By the wireless remote controller (with “TEST RUN” button)
• To start test run, press the “START/STOP” button and the “TEST RUN” button on the
remote controller.
• To end test run, press the remote controller “START/STOP” button.
By the indoor unit or IR receiver unit
• To start test run, press the “MANUAL AUTO” button of the unit for more than 10 seconds
(forced cooling).
• To end test run, press the “MANUAL AUTO” button for more than 3 seconds or press
the remote controller “START/STOP” button.
Bus wire
Remote
controller cable
(1) Is operation of each button on the remote control unit normal?
(2) Does each lamp light normally?
(3) Do airflow direction louvers operate normally?
(4) Is the drain normal?
(5) Do not have an abnormal noise and vibration during operation?
Do not operate the air conditioner in test run for a long time.
CAUTION
(1) Wiring method (indoor unit to remote controller)
Indoor
Indoor
Indoor
unit 2
unit 3
unit 1
Check items
3
OFF
OFF
OFF
OFF
ON
ON
4
OFF
OFF
OFF
OFF
OFF
OFF
11. CHECK LIST
Pay special attention to the check items below when installing the indoor unit(s). After
installation is complete, be sure to check the following check items again.
CHECK ITEMS
If not performed
correctly
Has the indoor unit been installed
correctly?
Vibration, noise, indoor unit
may drop
Has there been a check for gas
leaks (refrigerant pipes)?
No cooling, No heating
CHECK
BOX
Has heat insulation work been completed? Water leakage
Does water drain easily from the
indoor units?
Water leakage
Are the wires and pipes all connected completely?
No operation, heat or burn
damage
Is the connection cable the specified thickness?
No operation, heat or burn
damage
12
11
ON
ON
OFF
ON
Are the inlets and outlets free of any obstacles? No cooling, No heating
13
12
OFF
OFF
ON
ON
14
13
ON
OFF
ON
ON
15
14
OFF
ON
ON
ON
After installation is completed, has
the proper operation and handling
been explained to the user?
16
15
ON
ON
ON
ON
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12. OPTIONAL KIT INSTALLATION (OPTION)
WARNING
Regulation of cable differs from each locality, refer in accordance with local rules.
14. 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
This air conditioner can be connected with the following optional kits.
Option type
Connector No.
Fresh air intake
CN6
External input
CN102
External output
CN103
Wired Remote Controller
Fresh air intake kit
OPERATION TIMER ECONOMY
lamp
lamp
lamp
(green)
(orange)
(green)
●(1)
●(1)
◊
●(1)
●(2)
◊
●(1)
●(5)
◊
●(1)
●(6)
◊
●(1)
●(8)
◊
●(2)
●(1)
◊
●(2)
●(2)
◊
●(2)
●(3)
◊
External output kit
13. CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature adjustment, timer, air
flow 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 custom code is changed, explain to the customer how it changed (the system returns to custom code A when the batteries in the remote controller unit are replaced).
*(4) is applicable to using wireless remote controller.
Description
Serial communication error
Wired remote controller communication error
Check run unfinished
Peripheral unit connection PCB
connection error
External communication error
R.C. address or Refrigerant
circuit address setting error
[Simultaneous Multi]
Indoor unit capacity error
Combination error
●(2)
●(4)
◊
• Connection R.C. address error
(indoor secondary unit)
[Simultaneous Multi]
• Connection R.C. address error
(indoor unit or branch unit)
[Flexible Multi]
(2)
(6)
◊
Indoor unit address setting error
●(2)
●(7)
◊
Primary unit, secondary unit setup error [Simultaneous Multi]
●(3)
●(2)
◊
Indoor unit PCB model
information error
●(3)
●(3)
◊
Indoor unit motor electricity
consumption detection error
●(3)
●(5)
◊
●(3)
●(9)
◊
Indoor unit power supply error for
fan motor
●(3)
●(10)
◊
Indoor unit communication circuit
(wired remote controller) error
●(4)
●(1)
◊
●(4)
●(2)
◊
●(4)
●(4)
◊
●(5)
●(1)
◊
●(5)
●(3)
◊
●(5)
●(7)
◊
●(5)
●(15)
◊
●(6)
●(1)
◊
Outdoor unit reverse/missing
phase and wiring error
●(6)
●(2)
◊
Outdoor unit main PCB model
information error or
communication error
●(6)
●(3)
◊
●(6)
●(4)
◊
●(6)
●(5)
◊
●(6)
●(8)
◊
Outdoor unit rush current limiting
resister temp. rise error
●(6)
●(10)
◊
Display PCB microcomputers
communication error
External input kit
Wired Remote Controller
Wired
remote
controller
Error code
Manual auto switch error
Inlet air temp. sensor error
Indoor unit Heat Ex. Middle
temp. sensor error
Human sensor error
Indoor unit fan motor error
Drain pump error
Damper error
Indoor unit error
Inverter error
Active filter error, PFC circuit
error
Trip terminal L error
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●(7)
●(1)
◊
●(7)
●(2)
◊
●(7)
●(3)
◊
●(7)
●(4)
◊
●(7)
●(5)
◊
●(7)
●(6)
◊
●(7)
●(7)
◊
●
●
(2)
◊
●(8)
●(3)
◊
●(8)
●(4)
◊
(8)
●(8)
●(6)
◊
●(9)
●(4)
◊
●(9)
●(5)
◊
●(9)
●(7)
◊
●(9)
●(8)
◊
●(9)
●(9)
◊
●(10)
●(1)
◊
●(10)
●(3)
◊
●(10)
●(4)
◊
●(10)
●(5)
◊
●(13)
●(2)
◊
Display mode
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
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
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 Lamp
(GREEN)
TIMER Lamp
(ORANGE)
OPERATION Lamp
(GREEN)
MANUAL AUTO
[Troubleshooting at the remote controller LCD]
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.)
Error code
EX. Self-diagnosis
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