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1. SAFETY PRECAUTIONS
• Read carefully all of safety information written in this manual before you install or use the
air conditioner.
• 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.
CAUTION
Indicates a potentially hazardous situation that may result in minor or
moderate injury or damage to property.
WARNING
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 10 minutes or
more before you touch the electrical components..
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 fi re. 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 fi re.
If refrigerant leaks when you are working, ventilate the area. If the leaking refrigerant is
exposed to a direct fl ame, 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.
Do not use this equipment with air or any other unspecifi ed refrigerant in the refrigerant
lines. Excess pressure can cause a rupture.
During installation, make sure that the refrigerant pipe is attached fi rmly before you
run the compressor. Do not operate the compressor under the condition of refrigerant
piping not attached properly with 2-way or 3-way valve open. This may cause abnormal
pressure in the refrigeration cycle that leads to rupture and even injury.
When installing or relocating the air conditioner, do not mix gases other than the
specifi ed refrigerant (R410A) to enter the refrigerant cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to
an abnormally high value and cause rupture, injury, etc.
For appropriate working of the air conditioner, install it as written in this manual.
To connect indoor unit and outdoor unit, or indoor unit and branch box, use air
conditioner piping and cables available through your local distributor. This manual
describes proper connections using such installation set.
Do not modify power cable, use extension cable or branch wiring. Improper use may
cause electric shock or fi re by poor connection, insuffi cient insulation or over current.
Do not purge the air with refrigerants but use a vacuum pump to vacuum the
installation.
There is no extra refrigerant in the outdoor unit for air purging.
Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.
Using the same vacuum pump for different refrigerants may damage the vacuum pump
or the unit.
Use a clean gauge manifold, vacuum pump and charging hose for R410A exclusively.
Do not modify this unit, such as opening a hole in the cabinet.
WARNING
During the pump-down operation, make sure that the compressor is turned off before
you remove the refrigerant piping.
Do not remove the connection pipe while the compressor is in operation with 2 way or 3
way valve open. This may cause abnormal pressure in the refrigeration cycle that leads
to rupture and even injury.
Children should be monitored to ensure they do not play with the device.
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
This unit must be installed by qualifi ed personnel with a capacity certifi cation of handling
refrigerant fl uids. Refer to regulation and laws in use on installation place.
Install the unit by following local codes and regulations in force at the place of
installation, and the instructions provided by the manufacturer.
This unit is part of a set constituting an air conditioner. The unit must not be installed
alone or be installed with non-authorized device by the manufacturer.
When installing pipes shorter than 3 m, sound of the outdoor unit will be transferred to
the indoor unit, which will cause large operating sound or some abnormal sound.
To protect the persons, earth( ground) the unit correctly, and use the power cable
combined with an Earth Leakage Circuit Breaker (ELCB).
The units are not explosion proof, and therefore should not be installed in explosive
atmosphere.
This unit 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 unit.
Do not touch the aluminum fi ns of heat exchanger built-in the indoor or outdoor unit to
avoid personal injury when you install or maintain the unit.
Do not place any other electrical products or household belongings under indoor unit or
outdoor unit. Condensation dripping from the unit might get them wet, and may cause
damage or malfunction of your property.
2. ABOUT THIS PRODUCT
2.1. Special tools for R410A
Tool name Change from R22 to R410A
Gauge manifold
Pressure is high and cannot be measured with a conven-
tional (R22) gauge. To prevent erroneous mixing of other
refrigerants, the diameter of each port has been changed.
It is recommended to use gauge with seals -0.1 to 5.3 MPa
(-1 to 53 bar) for high pressure.
-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.
Charge hose
To increase pressure resistance, the hose material and base
size were changed.(R410A)
Vacuum pump
A conventional vacuum pump can be used by installing a
vacuum pump adapter.
(Use of a vacuum pump with a series motor is prohibited.)
Gas leakage detector
Special gas leakage detector for HFC refrigerant R410A.
AIR CONDITIONER
Wall Mounted Type
INSTALLATION MANUAL
For authorized service personnel only.
PART No.9320394042
Contents
1. SAFETY PRECAUTIONS .......................................................................................... 1
2. ABOUT THIS PRODUCT........................................................................................... 1
3. SELECTING THE MOUNTING POSITION ............................................................... 2
4. INSTALLATION DIAGRAM ........................................................................................ 3
5. INDOOR UNIT INSTALLATION ................................................................................ 3
6. OUTDOOR UNIT INSTALLATION ............................................................................ 5
7. FINISHING................................................................................................................. 5
8. TEST RUN ................................................................................................................. 6
9. CUSTOMER GUIDANCE .......................................................................................... 6
10. FRONT PANEL REMOVAL AND INSTALLATION ..................................................... 6
11. PUMP DOWN OPERATION (FORCED COOLING OPERATION) ............................ 6
12. SELECTING THE REMOTE CONTROLLER CUSTOM CODE ................................ 6
13. FUNCTION SETTING................................................................................................ 6
14. ERROR CODES ........................................................................................................ 7
English
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Copper pipes
It is necessary to use seamless copper pipes and it is desirable that the amount of residual
oil is less than 40 mg/10 m. Do not use copper pipes having a collapsed, deformed or
discolored portion (especially on the interior surface). Otherwise, the expansion value or
capillary tube may become blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when using R22, it is nec-
essary to choose adequate materials.
Thicknesses of copper pipes used with R410A are as shown in the table below. Never use
copper pipes thinner than 0.8 mm even when it is available on the market.
Thicknesses of Annealed Copper Pipes
Nominal diameter (in.) Outer diameter (mm) Thickness (mm)
1/4 6.35 0.80
3/8 9.52 0.80
WARNING
To install a unit that uses R410A refrigerant, use dedicated tools and piping materials
that have been manufactured specifi cally for R410A use. Because the pressure of
R410A refrigerant is approximately 1.6 times higher than 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 fi re.
Do not use a vacuum pump or refrigerant recovery tools with a series motor, since it
may ignite.
2.2. Power
WARNING
Always use a special branch circuit and install a special receptacle to supply power to
the room air conditioner.
Use a circuit breaker and receptacle matched to the capacity of the air conditioner.
Install a leakage circuit breaker in accordance with the related laws and regulations and
electric company standards.
The circuit breaker is installed in the permanent wiring. Always use a circuit that can trip
all the poles of the wiring and has an isolation distance of at least 3 mm between the
contacts of each pole.
CAUTION
The power source capacity must be the sum of the air conditioner current and
the current of other electrical appliances. When the current contracted capacity is
insuffi cient, change the contracted capacity.
When the voltage is low and the air conditioner is diffi cult to start, contact the power
company the voltage raised.
2.3. Electric requirement
CAUTION
Be sure to install a breaker of the specifi ed capacity.
Regulation of cables and breaker differs from each locality, refer in accordance with
local rules.
Voltage rating
1 ø 220-240 V (50 Hz)
Operating range
198-264 V
Cable
Conductor
size [mm
2
]
*1
Type Remarks
Connection cable 1.5 Type 60245 IEC57
3cable + Earth (Ground),
1ø220-240V
*1
Selected sample: Select the correct cable type and size according to the country or
region’s regulations.
Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the
wire diameter when the wire length is long.
Breaker Specifi cation
*2
Circuit breaker
(over current)
model 09,12 Current : 10(A)
Earth leakage breaker Leakage current : 30mA 0.1sec or less
*
3
*2
Select the appropriate breaker of the described specification according to the national
or regional standards.
*3
Select the breaker that enough load current can pass through it.
• Before starting work check that power is not being supplied to all poles of the indoor
unit and outdoor unit.
• Install all electrical works in accordance to the national standard.
• Install the disconnect device with a contact gap of at least 3 mm in all poles nearby the
units. (Both indoor unit and outdoor unit)
• Install the circuit breaker nearby the units.
2.4. Pipe length
Maximum length
Maximum height
(between indoor and outdoor)
model 09 :10 m
model 12 :15 m
model 09 : 5 m
model 12 : 8 m
CAUTION
If the units are further apart than the maximum length of the piping is specifi ed, correct
operation can not be guaranteed.
The outdoor unit with the refrigerant removed from the packaging is sealed.
(Indoor unit, the refrigerant is not sealed.)
2.5. Additional charge
For the additional amount, see the table below.
Pipe length
7.5 m
model 09 : 10 m
model 12 : 15 m
Rate
Additional refrigerant
None
model 09 :+50 g
model 12 : +150 g
20 g/m
Maximum amount of refrigerant charge
model 09 : 670 g / model 12 : 850 g
2.6. Operating range
Cooling modeCooling mode
Dry modeDry mode
Outdoor temperature 21 to 46 ˚C
2.7. Accessories
The following installation accessories are supplied.
Use them as required.
Name and Shape Q’ty Name and Shape Q’ty Name and Shape Q’ty
Operating manual
1
Installation manual
(This manual)
1
Wall hook bracket
1
Remote controller
1
Remote controller
holder
1
Battery
2
Tapping screw
(large)
5
Cloth tape
1
Tapping screw
(small)
2
The following items are necessary to install this air conditioner. (The items are not included
with the air conditioner and must be purchased separately.)
Name Q’ty Name Q’ty
Connection pipe assembly 1 Wall cap 1
Connection cable 1 Saddle 1 set
Wall pipe 1 Drain hose 1
Decorative tape 1 Tapping screws 1 set
Vinyl tape 1 Sealant 1
3. SELECTING THE MOUNTING POSITION
Decide the mounting position with the customer as follows:
• Do not set to a place where there is oily smoke, oil is used in the factory, the unit can
contact sea breeze, sulfi de gases will be generated in the hot spring area, corrosive
gases will be generated, animal may urine on the unit and ammonia will be generated
and a dusty place.
Indoor unit
(1) Install the indoor unit level on a strong wall which is not subject to vibration.
(2) The inlet and outlet ports should not be obstructed : the air should be able to blow all
over the room.
(3) Install the unit a dedicated electrical branch circuit.
(4) Do not install the unit where it will be exposed to direct sunlight.
(5) Install the unit where connection to the outdoor unit is easy.
(6) Install the unit where the drain hose can be easily installed.
(7) Take servicing, etc. into consideration and leave the spaces shown in “4. INSTALLA-
TION DIAGRAM”. Also install the unit where the fi lter can be removed.
(8) Indoor unit should be set to a place where it is free from the infl uence of the electronic
instant on/off type fl uorescent lamp and the thin TV screen.
Correct initial installation location is important because it is diffi cult to move unit after it is
installed.
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5. INDOOR UNIT INSTALLATION
WARNING
During transportation or relocation of the indoor unit, pipes shall be covered with the
wall hook bracket for protection. Do not move the product by holding the indoor unit
pipes.
(When operating, There is a possibility that the stress is applied to the pipe joint, fl am-
mable gas may leak.)
Indoor unit piping direction
The piping can be connected in
the 6 directions indicated in the
following.
When the piping is connected in
direction 2 , 3 , 4 or 5 , cut along
the piping groove in the side of
the front cover with a hacksaw.
2: Right
outlet
3: Bottom outlet
1: Rear outlet
4: Left bottom outlet
6: Left rear
outlet
5: Left
outlet
(Rear)
Cutting the hole in the wall for the connecting piping
(1) Cut a 65 mm diameter hole in the wall at the position shown in the following.
(2) Cut the hole so that the outside end is lower (5 to 10 mm) than the inside end.
(3) Always align the center of the wall hole. If misaligned, water leakage will occur.
(4) Cut the wall pipe to match the wall thickness, stick it into the wall cap, fasten the cap
with vinyl tape, and stick the pipe through the hole.
(5) For left piping and right piping, cut the hole a little lower so that drain water will fl ow
freely.
Wall hook bracket
Center mark Center mark
65 mm dia. hole 65 mm dia. hole
Fasten with vinyl tape
5 to
10 mm
low
Wall pipe*
Wall cap*
(Inside) (Outside)
Wall
*Field supplied
WARNING
Always use the wall pipe. If the wall pipe is not used, the cable that is connected
between the indoor unit and the outdoor unit may touch metal, and cause an electric
discharge.
Installing the wall hook bracket
Wall hook bracket
Tapping screw
(Large)
(1) Install the wall hook bracket so that it
is correctly positioned horizontally and
vertically.
If the wall hook bracket is titled, water
will drip to the fl oor.
(2) Install the wall hook bracket so that
it is strong enough to support the
weight of the unit.
• Fasten the wall hook bracket to the wall with 5
or more screws through the holes near the outer
edge of the bracket.
• Check that there is no rattle at the wall hook
bracket.
CAUTION
Install the wall hook bracket both horizontally and vertically aligned. Misaligned
installation may cause water leakage.
Forming the drain hose and pipe
[Rear piping, Right piping, Bottom piping]
Pipe (top)
Indoor unit
drain hose
(bottom)
• Install the indoor unit piping in the direction
of the wall hole and bind the drain hose
and pipe together with vinyl tape.
• Install the piping so that the drain hose is
at the bottom.
• Wrap the pipe of the indoor unit that visible
from the outside with decorative tape.
• For right or bottom outlet piping, cut off
the piping outlet cutting groove with a
hacksaw.
[For Left rear piping, Left piping]
Interchange the drain cap and the drain hose.
Indoor unit drain hose Drain cap
• For left or left bottom outlet
piping, cut off the piping
outlet cutting groove with a
hacksaw.
• Remove the drain cap by
pulling at the projection at the
end of the cap with pliers, etc.
Outdoor unit
(1) If possible, do not install the unit where it will be exposed to direct sunlight.
(If necessary, Install a blind that does not interfere with the air fl ow.)
(2) Do not install the unit where a strong wind blows or where it is very dusty.
(3) Do not install the unit where people pass.
(4) Take your neighbors into consideration so that they are not disturbed by air blowing
into their windows or by noise.
(5) Provide the space shown in “4. INSTALLATION DIAGRAM” so that the air fl ow is not
blocked.
Also for effi cient operation, leave open three of the four directions front, rear, and both
sides.
(6) Install the unit where keep away more than 3m from the antenna of TV set and Radio.
(7) Outdoor unit should be set to a place where both drainage and itself will not be
affected when heating.
WARNING
Install the unit where is capable to support the weight of the unit. Secure the unit fi rmly
so that the unit does not topple or fall.
CAUTION
Do not install the 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 fi lled 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 where is close to heat sources.
• 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 refriger-
ant leakage.
• Area that can cause combustible gas to leak, contains suspended carbon fi bers or
fl ammable dust, or volatile infl ammables such as paint thinner or gasoline.
• If gas leaks and settles around the unit, it can cause a fi re.
• Area where animals may urinate on the unit or ammonia may be generated.
• Do not use the unit for special purposes, such as storing food, raising animals, grow-
ing plants, or preserving precision devices or art objects. It can degrade the quality of
the preserved or stored objects.
• Install the unit where drainage does not cause any trouble.
• Install the indoor unit, outdoor unit, and power supply cable at least 1 m away from a
television or radio receivers. The purpose of this is to prevent TV reception interfer-
ence or radio noise.
(Even if they are installed more than 1 m apart, you could still receive noise under
some signal conditions.)
• If children may approach the unit, take preventive measures so that they cannot
reach the unit.
• Install the indoor unit on the wall where the height from the fl oor is more than 1.8 m.
4. INSTALLATION DIAGRAM
Installation dimensions
Wall hook bracket
6.3 cm or over
7 cm or over
[INDOOR UNIT]
[OUTDOOR UNIT]
150 cm or over
180 cm or over
10 cm or over
(Wall cap)
Remote
controller
Remote controller holder
Tapping screw (small)
10 cm or over
60 cm or over
25 cm or
over
10 cm or over
20 cm or
over
5 cm or over
48 cm
27 cm
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Installation method of drain cap Installation method of drain hose
Screw
hole
Drain cock
Drain hose
Screw
Drain fi xture
Vertically insert the drain hose toward
the inside, so that the drain fi xture can
accurately align with the screw hole
around the drain cock. After inserting
and before replacing, reinstall and fi x the
removed screws.
No gap
Hexagonal
wrench
Drain cock
Drain cap
Use a hexagonal wrench 4 mm at opposite
side to insert the drain cap, till the drain cap
contacts the tip of drain cock.
Removal method of drain hose
Screw
Drain hose
Drain fi xture
Remove the screw
at the left of drain
hose and pull out
drain hose.
Hold around the joint of the drain hose during working.
As the screw is inside, be sure to use screwdriver treated with magnet.
Connection
pipe
(6.35 mm
dia.)
Bend (R70)
with a pipe
bender
Connection
pipe (9.52 mm dia.)
Align the marks.
• For left piping and left rear piping, align the
marks on the wall hook bracket and shape the
connection pipe.
• Bend the connection piping at a bend radius of
70 mm or more and install no more than 35 mm
from the wall.
• After passing the indoor piping and drain hose
through the wall hole, hang the indoor unit on
the hooks at the top and bottom of the wall hook
bracket.
[Installing the indoor unit]
Top hooks
Bottom hooks
• Hang the indoor unit from the
hooks at the top of the wall
hook bracket.
Indoor unit
(Spacer)
Wall hook bracket
• Insert the spacer, etc. between the indoor unit and the
wall hook bracket and separate the bottom of the indoor
unit from the wall.
• After hooking the indoor unit to the top hook, hook the fi ttings
of the indoor unit to the two bottom hooks while lowering the
unit and pushing it against the wall.
CAUTION
• Insert drain hose and drain cap securely. Drain should slope down to avoid water
leakage.
• When inserting the drain hose, no other material than water should be applied.
Application of other material than water will cause deterioration of the hose, and may
cause water leakage.
• After you remove a drain hose, be sure to attach the drain cap.
• When you secure the piping and drain hose with tape, arrange the drain hose so that
it comes under bottom of piping.
• For drain hose piping in low temperature environment, you need to apply frozen
protection to prevent a frozen drain hose. After cooling operation is performed in low
temperature environment, (when outdoor temperature under 0 °C,) water in the drain
hose could be frozen. Frozen drain water will block the water fl ow in the hose, and
may cause water leakage at the indoor unit.
Flare connection (Pipe connection)
Flaring
(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 the burrs.
(3) Insert the fl are nut onto the pipe and fl are the pipe with a fl aring tool.
Insert the fl are nut (always use the fl are nut
attached to the indoor and outdoor units
respectively) onto the pipe and perform the fl are
processing with a fl are tool.
Use the special R410A fl are tool, or the
conventional (for R22) fl are tool.
When using the conventional fl are tool, always
use an allowance adjustment gauge and secure
the A dimension shown in the table below.
A
L
Check if [L] is
fl ared uniformly
and is not cracked
or scratched.
Pipe
Die
Pipe outside diameter
Pipe outside
diameter
A (mm)
Flare tool for R410A
Clutch type
Conventional (R22) fl are tool
Clutch type Wing nut type
ø 6.35 mm (1/4”) 0 to 0.5 1.0 to 1.5 1.5 to 2.0
ø 9.52 mm (3/8”) 0 to 0.5 1.0 to 1.5 1.5 to 2.0
Connection
(1) Install the outdoor unit wall cap (supplied with
the optional installation set or procured at the
site) to the wall pipe.
(2) Connect the outdoor unit and indoor unit
piping.
(3) After matching the center of the fl are surface
and tightening the nut hand tight, tighten the
nut to the specifi ed tightening torque below
with a torque wrench.
Tighten with two wrenches.
Wrench (fi xed)
Flare nut
Connection pipe
Indoor unit pipe
Torque
wrench
Flare nut size and tightening torque
To prevent
gas leakage,
coat the fl are
surface with
refrigerator oil.
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)
CAUTION
• Fasten a fl are nut with a torque wrench as instructed in this manual. If fastened too
tight, the fl are nut may be broken after a long period of time and cause a leakage of
refrigerant.
HOW TO CONNECT THE WIRE TO THE TERMINALS
(1) Use ring terminals with insulating sleeves as shown in the fi gure below to connect to
the terminal block.
(2) Securely crimp the ring terminals to the wires using an appropriate tool so that the
wires do not come loose.
(3) Use the specifi ed 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 below for the terminal screw tightening torques.
Tightening torque
M3.5 screw 0.8 to 1.0 N • m ( 8 to 10 kgf • cm )
M4 screw 1.2 to 1.8 N • m (12 to 18 kgf • cm)
M5 screw 2.0 to 3.0 N • m (20 to 30 kgf • cm)
Screw with special washer
Ring terminal
Terminal board
Terminal block
Wire
Sleeve
Ring terminal
Wire
Strip
10 mm
Indoor unit wiring
Wire cover
Screw
Cable
clamp
(1) Remove the wire cover.
(2) Remove the cable clamp.
(3) Connect the ring terminals fully
into the terminal block.
(4) Fasten the connection cable
with a cable clamp.
(5) Fasten the wire cover.
LN
Connection cable
CAUTION
• Match the terminal block numbers and connection cable colors with those of the
outdoor unit. Incorrect wiring may cause a fi re.
• When fi xing the connection cable with the cable clamp, always fasten the cable at the
plastic jacket portion, but not at the insulator portion. If the insulator is chafed, electric
leakage may occur.
• Always connect the earth (ground) wire. Improper earthing (grounding) work can
cause electric shocks.
• Connect the connection cables fi rmly to the terminal block. Imperfect installation may
cause a fi re.
• Do not use the ground screw for the indoor unit to the outdoor unit unless it is
specifi ed.
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Between 7.5 m and 10 m (model 09) / 15 m (model 12), when using a connection pipe
other than that in the table, charge additional refrigerant with 20g/1 m as the criteria.
Outdoor unit wiring
3NL
Cable clamp
Screw
Earth
(Ground)
screw
Earth
(Ground)
screw
Indoor unit terminal block
Connection cable
Outdoor unit terminal block
Earth
(Ground)
screw
Cable clamp
(1) Remove the outdoor unit switch cover.
(2) Remove the outdoor unit cable clamp and nylon
clamp.
(3) Securely crimp the ring terminals to the cables
using an appropriate tool so that the wires do not
come loose.
(4) Connect the ring terminals fully into the terminal
block.
(5) Fasten the sheath with a cable clamp.
(6) Install switch cover.
CAUTION
Be careful not to generate a spark as follows for using a fl ammable refrigerant.
• Do not remove the fuse while the power is on.
• Do not disconnect the wiring while the power is on.
• It is recommended to position the outlet connection in a high position. Place the cords
so that they do not get tangled.
• Match the terminal block numbers and connection cable colors with those of the
outdoor unit. Incorrect wiring may cause a fi re.
• When fi xing the connection cable with the cable clamp, always fasten the cable at the
plastic jacket portion, but not at the insulator portion. If the insulator is chafed, electric
leakage may occur.
• Always connect the earth (ground) wire. Improper earthing (grounding) work can
cause electric shocks.
• Connect the connection cables fi rmly to the terminal block. Imperfect installation may
cause a fi re.
• Do not use the ground screw for the indoor unit to the outdoor unit unless it is
specifi ed.
7. FINISHING
Overlap the insulation
Connection pipe
(heat insulation)
Vinyl tape
Bind the pipes
together so that
there is no gap.
Left piping
Connection cable
Drain hose
Pipe
Drain hose
Wrap with
cloth tape
Cloth tape
Pipe
(1) Insulate between pipes.
• For rear, right, and bottom piping, overlap the
connection pipe insulation and indoor unit pipe
insulation and bind them with vinyl tape so that
there is no gap.
• For left and left rear piping, butt the connection
pipe insulation and indoor unit pipe insulation
together and bind them with and vinyl tape so
that there is no gap.
• For left and left rear piping, wrap the area which
accommodates the rear piping storage section
with cloth tape.
• For left and left rear piping, bind the connection
cord to the top of the pipe with vinyl tape.
• For left and left rear piping, bundle the piping and
drain hose together by wrapping them with cloth
tape over within the range of which they fi t into
the rear piping storage section.
(2) Temporarily fasten the connection cord along the
connection pipe with vinyl tape. (Wrap to about 1/3
the width of the tape from the bottom of the pipe
with tape so that water does not enter.)
(3) Fasten the connection pipe to the outside wall with
saddles,etc.
(4) Fill the gap between the outside wall pipe hole and
the pipe with sealant so that rain water and wind
cannot blow in.
(5) Fasten the drain hose to the outside wall, etc.
For connection from the left rear
Connection cable
Connection pipe
Wall pipe
Drain hose
Saddle*
Outside
wall cap*
Sealer
putty*
(Outdoors)
Wall
*Field supplied
Pipe
Check the following:
Prohibited Prohibited Prohibited
Good
Drain hose
Saddle
Lifted up
Wave
End in water
6. OUTDOOR UNIT INSTALLATION
Switch cover
Hook
Screw
• Set the unit on a strong stand, such as one made of
concrete blocks to minimize shock and vibration.
• Do not set the unit directly on the ground because it will
cause trouble.
Switch cover removal
(1) Remove the screw.
(2) Push downward the cover.
Installing the switch cover
After inserting the hook of Switch cover, then push upward,
and then tighten the tapping screw.
WARNING
• Install the unit where it will not be tilted by more than 5°.
• When installing the outdoor unit where it may exposed to strong wind, fasten it
securely.
Air purge
Always use a vacuum pump to purge the air.
Refrigerant for purging the air is not charged in the outdoor unit at the factory.
Close the high pressure side valve of the gauge manifold fully and do not operate it during
the following work.
CAUTION
• Refrigerant must not be discharged into atmosphere.
• After connecting the piping, check the joints for gas leakage with gas leak detector.
(1) Check if the piping connections are secure.
(2) Check that the stems of 2-way valve and 3-way valve are closed fully.
(3) Connect the gauge manifold charge hose to the charging port of the 3-way valve
(side with the projection for pushing in the valve core).
(4) Open the low pressure side valve of the gauge manifold fully.
(5) Operate the vacuum pump and start pump down.
(6) Slowly loosen the fl are nut of the 3-way valve and check if air enters, then retighten
the fl are nut.
(When the fl are nut is loosened the operating sound of the vacuum pump changes
and the reading of the compound pressure gauge goes from minus to zero.)
(7) Pump down the system for at least 15 minutes, then check if the compound pressure
gauge reads -0.1 MPa (-76 cmHg, -1 bar).
(8) At the end of pump down, close the low pressure side gauge of the gauge manifold
fully and stop the vacuum pump.
(9) Slowly loosen the valve stem of the 3-way valve. When the compound pressure
gauge reading reaches 0.1-0.2 MPa, retighten the valve stem and disconnect the
charge hose from the 3-way valve charging port.
(If the stem of the 3-way valve is opened fully before the charge hose is
disconnected, it may be diffi cult to disconnect the charge hose.)
(10) Fully open the valve stems of the 2-way valve and 3-way valve using a hexagon
wrench. (After the valve stem begins to turn, turn it with a torque of less than
2.9 N • m until it stops turning.)
(11) Firmly tighten the 2-way valve and 3-way valve blank cap and the charging port cap.
LO
HI
Charging port
3-way valve
Charging
port cap
2-way valve
High pressure
side valve
(closed)
Compound pressure gauge
-0.1 MPa (-76 cmHg -1 bar)
Low pressure
side valve
Gauge manifold
Pressure gauge
Flare nut
Valve stem
Blank cap
Charge hose
Vacuum pump
Charge hose
Tightening torque [N • m(kgf • cm)]
Blank cap 20.0 to 25.0 (200 to 250 )
Charging port cap 12.5 to 16.0 (125 to 160 )
Additional charge
Refrigerant suitable for a piping length of 7.5 m is charged in the outdoor unit at the
factory.
When the piping is longer than 7.5 m, additional charging is necessary.
For the additional amount, see the table below.
Pipe length 7.5 m
model 09 : 10 m
model 12 : 15 m
Rate
Additional refrigerant None
model 09 :+50 g
model 12 : +150 g
20 g/m
CAUTION
• When adding refrigerant, add the refrigerant from the charging port at the completion
of work.
• The maximum length of the piping is 10 m (model 09) / 15 m (model 12). If the units
are further apart than this, correct operation can not be guaranteed.
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8. TEST RUN
• Perform test operation and check items 1 and 2 below.
• For the test 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.)
• 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 will simultaneously fl ash slowly.)
1. Indoor unit
(1) Is operation of each button on the remote control unit normal?
(2) Does each lamp light normally?
(3) Do the airfl ow direction louver operate normally?
(4) Is the drain normal?
2. Outdoor unit
(1) Is there any abnormal noise and vibration during operation?
(2) Will noise, wind, or drain water from the unit disturb the neighbors?
(3) Is there any gas leakage?
Transmitter
section
TEST RUN button
9. CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating manual.
(1) Starting and stopping method, operation switching, temperature adjustment, timer,
airfl ow switching, and other remote controller operations.
(2) Air fi lter removal and cleaning, and how to use the air louvers.
(3) Give the operating and installation manuals to the customer.
10. FRONT PANEL REMOVAL AND INSTALLATION
b
a
c
Intake grill removal
Front panel removal
Intake grill installation
Open the intake
grille. While
gently pressing
the left and right
mounting shafts
of the intake
grille outward
“a”, remove the
intake grille in
direction of the
arrow “b”.
While holding the
grille horizontal, set
the left and right
mounting shafts
into the pillow
blocks at the top of
the panel “c”.
To latch each shaft
properly, insert the
shaft until it snaps.
Press 4 places on
the intake grille to
close it completely.
Screws (Wire cover)
Screws (3 position)
Wire cover
(1) Remove intake grille
(Reference the intake grille removal.)
(2) Remove wire cover.
(3) Remove 3 screws.
(4) The front panel is pulled to the
front, raising the upper surface,
and a front panel is removed.
Front panel installation
Top holes
Bottom holes
Indoor unit
Top hooks
Front panel
Bottom hooks
(1) Firstly, fi t the lower part of the front panel,
and insert top and bottom hooks.
(3 top sides, 6 bottom sides)
(2) Three screws is attached.
(3) The wire cover is attached.
(4) The intake grille is attached.
11. PUMP DOWN OPERATION
(FORCED COOLING
OPERATION)
To avoid discharging refrigerant into the atmosphere at the time of relocation or disposal,
recover refrigerant by doing the forced cooling operation according to the following
procedure.
(1) Conduct preliminary operation for 5 to 10 minutes using the forced cooling operation.
Start the forced cooling operation. Keep on pressing the MANUAL AUTO button of the
indoor unit for more than 10 seconds. The operation indicator lamp and timer indicator
lamp will begin to fl ash simultaneously during test run. (The forced cooling operation
cannot start if the MANUAL AUTO button is not kept on pressing for more than 10
seconds.)
(2) Close the valve stem of 2-way valve completely.
(3) Continue the forced cooling operation for 2 to 3 minutes, then close all the valve
stems on the 3-way valves
(4) Stop the operation.
• Press the START/STOP button of the remote controller to stop the operation.
• Press the MANUAL AUTO button when stopping the operation from the indoor unit
side.
(It is not necessary to press down for more than 10 seconds.)
CAUTION
Please check the refrigerant circuit for any leaks before starting the pump down
operation.
Do not proceed with the pump down operation if there is no refrigerant left in the circuit
due to bent or broken piping.
During the pump down operation, be sure to turn off the compressor before removing
the refrigerant piping.
12. SELECTING THE REMOTE CONTROLLER
CUSTOM CODE
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 (four 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.
• Confi rm the setting of the remote controller custom code and the printed circuit board
setting.
If these are not confi rmed, 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
).
(3) Press 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.
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 air conditioner custom code is set to A prior to shipment.
Contact your retailer to change the custom code.
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 fi nd the code which operates the air conditioner.
13. FUNCTION SETTING
Perform the Function Setting according to the installation conditions using the remote
controller.
CAUTION
• Confi rm whether the wiring work for Outdoor unit has been fi nished.
• Confi rm 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 and Setting
Value.
• Settings will not be changed if invalid numbers or setting values are selected.
Entering the Function Setting Mode
While pressing the FAN button and SET TEMP. ( ) simultaneously, press the RESET
button to enter the function setting mode.
]
STEP 1
Setting 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 signal if the air conditioner has not
been set for the custom code.) The custom code
that is set through this process is applicable only
to the custom code in the FUNCTION SETTING.
For details on how to set the custom code through
the normal process, refer to SELECTING THE
REMOTE CONTROLLER CUSTOM CODE.
1 Press the SET TEMP. (
) ( ) button to
*1
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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 MODE button to accept the custom code, and proceed to STEP 2.
The air conditioner custom code is set to prior to shipment.
Contact your retailer to change the custom code.
The remote controller resets to custom code
when the batteries in the remote
controller are replaced. If you use a custom code other than custom code
, 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 fi nd the code which operates the air conditioner.
STEP 2
Selecting the Function Number and Setting Value
*1
*1
Function
number
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 SLEEP button, then after you hear
the beep emitted from the indoor unit, press the
START/STOP button to confi rm 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.
CAUTION
After turning off the power, wait 10 seconds or more before turning on it again.
The Function Setting does not become active unless the power is turned off then on
again.
Filter sign
Select appropriate intervals for displaying the fi lter 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
Function
Number
Setting Value
Standard (400 hours)
11
00
Long interval (1,000 hours) 01
Short interval (200 hours) 02
♦ No indication 03
Room temperature control for cooling
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
♦ Standard
30
00
Lower control 01
Auto restart
Enable or disable automatic restart after a power interruption.
(♦... Factory setting)
Setting Description
Function
Number
Setting Value
♦ Enable
40
00
Disable 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.
Remote controller custom code
(Only for wireless remote controller)
The indoor unit custom code can be changed. Select the appropriate custom code.
(♦... Factory setting)
Setting Description
Function
Number
Setting Value
♦ A
44
00
B01
C02
D03
Setting record
Record any changes to the settings in the following table.
Setting Description Setting Value
Filter sign
Room temperature control for cooling
Auto restart
Remote controller custom code
After completing the FUNCTION SETTING, be sure to turn off the power and turn it on again.
14. ERROR CODES
The lamp on the photo detector unit will output error codes by way of blinking patterns.
See the lamp blinking patterns in the table. An error display is displayed only during
operation.
Error display
Description
OPERATION
lamp
(green)
TIMER
lamp
(orange)
SWING
lamp
(green)
●
(3)
●
(2)
◊
Indoor unit PCB model information error
●
(3)
●
(5)
◊
Manual auto switch error
●
(4)
●
(1)
◊
Room temp. sensor error
●
(4)
●
(2)
◊
Indoor unit Heat Ex. Middle temp. sensor
error
●
(5)
●
(1)
◊
Indoor unit fan motor error
Display mode
●
: 0.5s ON / 0.5s OFF
◊
: 0.1s ON / 0.1s OFF
( ) : Number of flashing
[Troubleshooting with the indoor unit display]
OPERATION indicator (green)
TIMER indicator (orange)
SWING indicator (green)
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