• 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.
This mark indicates procedures which, if
WARNING!
• Request your dealer or a professional installer to install
the unit in accordance with this Manual.
An improperly installed unit can cause serious accidents
such as water leakage, electric shock, or fi re.
If the unit is installed in disregard of the instructions in the
Installation Manual, it will void the manufacturer’s warranty.
• Do not turn ON the power until all work has been
completed.
Turning ON the power before the work is completed can
cause serious accidents such as electric shock or fi re.
• If refrigerant leaks while work is being carried out,
ventilate the area.
If the refrigerant comes in contact with a flame, it
produces a toxic gas.
• Installation work must be performed in accordance with
national wiring standards by authorized personnel only.
CAUTION!
improperly performed, might lead to the
death or serious injury of the user.
This mark indicates procedures which,
if improperly performed, might possibly
result in personal harm to the user, or
damage to property.
2. ABOUT THE UNIT
2.1. Precautions for using the 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 leakage, make sure that it does not
exceed the concentration limit.
If a refrigerant leakage exceeds the concentration limit, it can
lead to accidents such as oxygen starvation.
2.2. Special tool for R410A
WARNING
• To install a unit that uses the R410A refrigerant, use
dedicated tools and piping materials that have been
manufactured specifi cally for R410A use.
Because the pressure of the 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 fi re.
Tool name
Gauge manifold
Charging hose
Vacuum pump
Gas leakage
detector
• Pressure is huge 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 –0.1 to 5.3 MPa and a low
pressure display range –0.1 to 3.8 MPa.
• To increase pressure resistance, the
hose material and base size were
changed.
• A conventional vacuum pump can be
used by installing a vacuum pump
adapter.
• Special gas leakage detector for HFC
refrigerant R410A.
Contents of change
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 fi re.
• 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.
Do not discard any accessories needed for installation until
the installation work has been completed.
• 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 leakage occurs during operation, immediately
vacate the premises and thoroughly ventilate the area.
If the refrigerant comes in contact with a fl ame, it produces a
toxic gas.
En-2
Name and ShapeQ’tyApplication
Operating Manual
1
3. INSTALLATION WORK
Especially, the installation place is very important for the split
type air conditioner because it is very diffi cult to move from
place to place after the fi rst installation.
3.1. Selecting an installation location
Installation Manual
Wall hook bracket
Binder
Cloth tape
Tapping screw
×
25mm)
(M4
Wire assebly
Air cleaning filter
(This book)
1
For indoor unit installation
1
For remote control cable
binding
1
For indoor unit installation
1
For wall hook bracket
installation
8
For wired remote control
installation
1
2
WARNING
• Select installation locations that can properly support the
weight of the indoor. Install the units securely so that they do
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 fall 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 fall or
the unit to leak water.
• Area that generates substances that adversely affect the
equipment, such as sulfuric gas, chlorine gas, acid, or
alkali.
It will cause the copper pipes and brazed joints to
corrode, which can cause refrigerant leakage.
• Area that can cause combustible gas to leak, contains
suspended carbon 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, growing plants, or preserving
precision devices or art objects.
It can degrade the quality of the preserved or stored
objects.
• Do not install where there is the danger of combustible gas
leakage.
• Do not install the unit near a source of heat, steam, or
fl ammable gas.
• Install the unit where drainage does not cause any trouble.
Air cleaning filter frame
2
Seal A
For indoor unit
installation
1
• Install the indoor unit, outdoor unit, power supply cable,
transmission cable, and remote control cable at least 1 m
away from a television or radio receivers. The purpose of this
is to prevent TV reception interference or radio noise.
(Even if they are installed more than 1 m apart, you could still
receive noise under some signal conditions.)
• If children under 10 years old may approach the unit, take
preventive measures so that they cannot reach the unit.
• Decide the mounting position with the customer as
follows:
(1) Install the indoor unit on a place having a suffi cient strength
so that it withstands against 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) A place from 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.
En-3
(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 vibrations are not amplifi ed.
(9) Take servicing, etc., into consideration and leave the spaces.
Also install the unit where the fi lter can be removed.
3.2. Installation dimensions
Provide a service space for inspection purposes.
Do not place any wiring or illumination in the service space, as
they will impede service.
60 mm or over
1,500 mm or over
1,800 mm or over
* Select the most appropriate airflow direction from 3 or
4 directions according to the shape of the room and the
installation position.
* When changing the number of outlets, we recommend
using the optional AIR OUTLET SHUTTER PLATE KIT to
close the outlet.
* For the specific closing pattern, please refer to the
attached AIR OUTLET SHUTTER PLATE KIT’S MANUAL.
(Do so before installing the decorative panel as it will be
installed on the body.)
* Be sure to make the function settings with the remote
control according to the number of airfl ow outlets and the
installed ceiling height.
50 mm
or over
Wall hook bracket
90 mm or
over
(Wall cap)
Drain hose
O.D 15.8 - 16.7 mm
I.D 13.8 mm
3.3.1. Determining the piping direction
The piping can be connected in the fi ve directions indicated by 1,
2, 3, 4, and 5 in (Fig. A).
When the piping is connected in direction 2 or 5, cut along the
piping groove in the side of the front cover with a hacksaw.
When connecting the piping in direction 3, cut a notch in the
thin wall at the front bottom of the front cover.
Fig. A
(Rear)
Left outlet
5
Rear outlet
Right outlet
2
Bottom outlet
3
1
Left rear outlet
4
3.3.2. Installing the wall hook bracket
CAUTION
• Install the wall hook bracket horizontally and perpendicularly.
(1) Install the wall hook bracket so that it is correctly positioned
horizontally and vertically. If the wall hook bracket is tiled,
water will drip to the fl oor.
(2) Install the wall hook bracket so that it is strong enough to
withstand the weight of an adult.
• Fasten the wall hook bracket to the wall with 6 or more
screws through the holes near the outer edge of the
bracket.
• Check that there is no rattle at the wall hook bracket.
Wall hook bracket
Tapping screw
Wall hook bracket
Center notch
Hook
String
3.3. Installing the unit
WARNING
• Install the air conditioner in a location which can withstand
a load do at least fi ve 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.
En-4
3.3.3. Cutting the hole in the wall for the
connecting piping
WARNING
• If the wall pipe is not used, the cable interconnecting the
indoor and outdoor units may touch metal and cause
electric leakage.
(1) Cut a 80 mm diameter hole in the wall at the position shown
in Fig.B.
(2) When cutting the wall hole at the inside of the wall hook
bracket, cut the hole within the range of the left and right
center marks 40 mm below the wall hook bracket.
When cutting the wall hole at the outside of the wall hook
bracket, cut the hole at least 10 mm below over.
(3) Cut the hole so that the outside end is lower (5 to 10 mm)
than the inside end.
(4) Always align the center of the wall hole. If misaligned, water
leakage will occur.
(5) 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. (The connection pipe is supplied in the
installation set.) (Fig. B)
(6) For left piping and right piping, cut the hole a little lower so
that drain water will fl ow freely. (Fig. B)
Fig. B
Wall hook bracket
Center mark
[Rear piping, Right piping, Bottom piping]
(1) Install the indoor unit piping in the direction of the wall hole
and bind the drain hose and pipe together with vinyl tape.
Right piping
Bottom piping
Bind with vinyl tape
Pipe (top) Rear piping
Indoor unit drain hose (bottom)
(2) Install the piping so that the drain hose is at the bottom.
(3) Wrap the pipes of the indoor unit that are visible from the
outside with decorative tape.
[For Left rear piping, Left piping]
(1) Interchange the drain cap, insulation and the drain hose.
For left outlet piping, cut
off the piping outlet cutting
groove with a hacksaw.
Remove the drain cap by pulling
Insulation
Indoor unit
drain hose
Drain cap
at the projection at the end of
the cap with pliers, etc.
And remove the insulation.
(2) Align the marks on the wall hook bracket and shape the
connection pipe.
Lower
80 mm dia. hole
Fasten with
vinyl tape
(Wall cap)
5 to 10
mm low
80 mm dia. hole
(Wall pipe)
(Inside)Wall
Lower
10 mm or
over
(Outside)
3.3.4. Forming the drain hose and pipe
CAUTION
• In order to align the drain hose and drain cap, be sure to
insert securely and vertically. Incline insertion will cause
water leakage.
• When inserting, be sure not to attach any material besides
water. If any other material is attached, it will cause
deterioration and water leakage.
Connection pipe
(Liquid pipe)
Bend (R70) with a
pipe bender
Connection pipe (Gas pipe)
Align the marks.
(3) Bend the connection piping at the bend radius of 70 mm or
more and install no more than 35 mm from the wall.
Installation method of Drain cap
Please put the heat insulation inside all along.
●
Use a hexagonal wrench (4mm at opposite side) to insert
●
the drain cap, till the drain cap contacts the tip of drain
cock.
No gap
Hexagonal
wrench
No gap
Drain Cock
Insulation
Drain cap
• After removing drain hose, be sure not to forget mounting
drain cap.
• Be sure to fix the drain hose with tape to the bottom of
piping.
En-5
[Removal method of drain hose]
Remove the screw at the left of drain hose and pull out drain
hose.
Screw
Drain fi xture (blue)
Drain hose
[Installation method of drain hose]
Vertically insert the drain hose toward the inside, so that the
drain fi xture (blue) can accurately align with the screw hole
around the drain cock.
After inserting and before replacing, please reinstall and fi x the
removed screws.
Drain fi xture(blue)
Screw hole
Drain cock
Screw
Drain hose
• Be sure to install around the drain hose connector.
• As the screw is inside, be sure to use screwdriver treated
with magnet.
(3) Remove the front panel.
The thumb is hung on the lower part as shown in the
1
fi gure, and it pulls to the front, pushing [–] mark, and
bottom hooks (two position) is removed from wall hook
bracket.
The front panel bottom is pulled to the front, and bottom
2
hooks is removed indoor unit.
Screws
(4 position)
Push
The front panel is pulled to the front, raising the upper
3
[–]
mark
Push
Wall hook bracket
Front panel
surface, and a front panel is removed.
Front panel
(4) Insert the spacer, etc. between the indoor unit and the wall
hook bracket and separate the bottom of the indoor unit from
the wall.
Indoor unit
3.3.5. Installing the indoor unit
(1) 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.
Connection pipe
(2 mm dia.)
Indoor unit
(Fitting)
(2) Remove the intake grille.
Open the intake grille.
1
Pull down the knob.
2
Intake grille
2
1
Top hooks
Wall hook
bracket
Bottom hooks
2
1
Intake grille
Knob
Spacer
Wall hook bracket
Lift the intake grille upward, until the axle at the top of the
3
intake grille is removed.
En-6
4. PIPE INSTALLATION
CAUTION
• Be more careful that foreign matter (oil, water, etc.) does
not enter the piping than with refrigerant R410A models.
Also, when storing the piping, securely seal the openings by
pinching, taping, etc.
• While welding the pipes, be sure to blow dry nitrogen gas
through them.
4.1. Selecting the pipe material
CAUTION
• Do not use existing pipes.
• Use pipes that have clean external and internal sides without
any contamination which may cause trouble during use,
such as sulfur, oxide, dust, cutting waste, oil, or water.
• It is necessary to use seamless copper pipes.
Material : Phosphor deoxidized seamless copper pipes
It is desirable that the amount of residual oil is less than
40 mg/10 m.
• Do not use copper pipes that have a collapsed, deformed,
or discolored portion (especially on the interior surface).
Otherwise, the expansion valve or capillary tube may
become blocked with contaminants.
• Improper pipe selection will degrade performance. As an air
conditioner using R410A incurs pressure higher than when
using conventional refrigerant, it is necessary to choose
adequate materials.
•
Thicknesses of copper pipes used with R410A are as
shown in the table.
•
Never use copper pipes thinner than those indicated in the
table even if they are available on the market.
Thicknesses of Annealed Copper Pipes (R410A)
Pipe outside diameter [mm (in.)]Thickness [mm]
6.35 (1/4)0.80
9.52 (3/8)0.80
12.70 (1/2)0.80
15.88 (5/8)1.00
19.05 (3/4)1.20
4.2. Pipe requirement
CAUTION
• Refer to the Installation Manual of the outdoor unit for
description of the length of connecting pipe or for difference
of its elevation.
• Use pipe with water-resistant heat insulation.
CAUTION
• Install heat insulation around both the gas and liquid pipes.
Failure to do so may cause water leaks.
Use heat insulation with heat resistance above 120 °C.
(Reverse cycle model only)
In addition, if the humidity level at the installation location
of the refrigerant piping is expected to exceed 70 %, install
heat insulation around the refrigerant piping. If the expected
humidity level is 70-80 %, use heat insulation that is 15 mm
or thicker and if the expected humidity exceeds 80 %, use
heat insulation that is 20 mm or thicker. If heat insulation
is used that is not as thick as specifi ed, condensation may
form on the surface of the insulation. In addition, use heat
insulation with heat conductivity of 0.045 W/(m·K) or less (at
20 °C).
4.3. Flare connection (pipe connection)
WARNING
• Tighten the flare nuts with a torque wrench using the
specifi ed tightening method. Otherwise, the fl are nuts could
break after a prolonged period, causing refrigerant to leak
and generate a hazardous gas if the refrigerant comes into
contact with a fl ame.
4.3.1. Flaring
•
Use special pipe cutter and fl are 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 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 flare tool, or the conventional flare
tool. Leakage of refrigerant may result if other fl are nuts
are used.
(4)
Protect the pipes by pinching them or with tape to
prevent dust, dirt, or water from entering the pipes.
En-7
Pipe outside
diameter
[mm (in.)]
6.35 (1/4)
Dimension A [mm]
Flare tool for R410A,
clutch type
Dimension B
[mm]
9.1
-00.4
9.52 (3/8)13.2
12.70 (1/2)16.6
0 to 0.5
15.88 (5/8)19.7
19.05 (3/4)24.0
When using conventional fl are tools to fl are R410A pipes,
the dimension A should be approximately 0.5 mm more
than indicated in the table (for fl aring with R410A fl are tools)
to achieve the specifi ed fl aring. Use a thickness gauge to
measure the dimension A.
Pipe outside
diameter [mm (in.)]
Width across flats
of Flare nut [mm]
6.35 (1/4)17
9.52 (3/8)22
12.70 (1/2)26
15.88 (5/8)29
19.05 (3/4)36
When the fl are nut is tightened properly by your hand, hold the
body side coupling with a separate spanner, then tighten with a
torque wrench.
If pipes are shaped by hand, be careful not to collapse
them.
•
Do not bend the pipes in an angle more than 90°.
•
When pipes are repeatedly bend or stretched, the material
will harden, making it diffi cult to bend or stretch them any
more.
•
Do not bend or stretch the pipes more than three times.
CAUTION
• To prevent breaking of the pipe, avoid sharp bends.
• If the pipe is bent repeatedly at the same place, it will break.
4.3.3. Pipe connection
CAUTION
• Be sure to connect the EV kit (optional) that is suitable to the
indoor unit.
For installation instructions, refer to the installation Manual of
the EV kit.
• Be sure to apply the pipe against the port on the indoor unit
correctly. If the centering is improper, the fl are nut cannot be
tighten smoothly. If the fl are nut is forced to turn, the threads
will be damaged.
4.4. 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.
After checking for gas leaks, insulate by wrapping insulation
around the two 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.
CAUTION
• Must fi t tightly against body without any gap.
• Do not remove the fl are nut from the indoor unit pipe until
immediately before connecting the connection pipe.
• Hold the torque wrench at its grip, keeping it in the right
angle with the pipe, in order to tighten the fl are nut correctly.
• Tighten the flare nuts with a torque wrench using the
specifi ed tightening method. Otherwise, the fl are nuts could
break after a prolonged period, causing refrigerant to leak
and generate a hazardous gas if the refrigerant comes into
contact with a fl ame.
En-8
5. ELECTRICAL WIRING
WARNING
• Electrical work must be performed in accordance with this
Manual by a person certifi ed under the national or regional
regulations. Be sure to use a dedicated circuit for the unit.
An insuffi cient power supply circuit or improperly performed
electrical work can cause serious accidents such as electric
shock or fi re.
• Before starting work, check that power is not being supplied
to the indoor unit and outdoor unit.
• 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 fi re.
• 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.
• Use the included connection cables and power cables or
ones specifi ed by the manufacturer. Improper connections,
insuffi cient insulation, or exceeding the allowable current can
cause electric shock or fi re.
• Do not modify the power cables, use extension cables,
or use any branches in the wiring. Improper connections,
insuffi cient insulation, or exceeding the allowable current can
cause electric shock or fi re.
• Match the terminal block numbers and connection cable
colors with those of the outdoor unit. Erroneous wiring may
cause burning of the electric parts.
• Securely connect the connection cables to the terminal
board. In addition, secure the cables with wiring holders.
Improper connections, either in the wiring or at the ends of
the wiring, can cause a malfunction, electric shock, or fi re.
• Always fasten the outside covering of the connection cable
with the cable clamp. (If the insulator is chafed, electric
leakage may occur.)
• Install a ground leakage breaker. In addition, install the
ground leakage breaker so that the entire AC main power
supply is cut off at the same time. Otherwise, electric shock
or fi re could result.
CAUTION
• Ground the unit.
Do not connect the ground cable to a gas pipe, water pipe,
lightning rod, or a telephone ground cable.
Improper grounding may cause electric shock.
• Do not connect power supply cables to the transmission or
remote control terminals, as this will damage the product.
• Never bundle the power supply cable and transmission cable
together. Bundling these cables together will cause miss
operation.
• When handling PCB, static electricity charged in the body
may cause malfunction of the PCB. Follow the cautions
below:
• Establish a ground for the indoor and outdoor units and
peripheral devices.
• Cut power (breaker) off.
• Touch metal part of the indoor and outdoor units for more
than 10 seconds to discharge static electricity charged in
the body.
• Do not touch terminals of parts and patterns implemented
on PCB.
5.1. Electrical requirement
Voltage rating
Operating range
Recommended
Power supply
cable
Transmission
cable
Remote
control
cable
*: Use shielded cable in accordance with local rules for remote
• Install a ground leakage breaker.
If a ground leakage breaker is not installed, it may cause
electric shock or fi re.
• Always connect the ground cable.
Improper grounding work can cause electric shocks.
• Install the remote control cables so as not to be direct
touched with your hand.
• Perform wiring work in accordance with standards so that the
air conditioner can be operated safely and positively.
• Connect the connection cable fi rmly to the terminal board.
Imperfect installation may cause a fi re.
En-9
5.2. Wiring method
(EXAMPLE)
POWER SUPPLY
OUTDOOR UNIT
TRANSMISSION
TRANSMISSIONTRANSMISSION
POWER SUPPLY
BREAKER
POWER SUPPLY
BREAKER
POWER SUPPLY
WALL MOUNTED TYPE
REMOTE CONTROL
REMOTE
CONTROL UNIT
POWER SUPPLY
EV KIT
INDOOR UNIT
POWER SUPPLYPOWER SUPPLY
BREAKER
INDOOR UNIT
TRANSMISSION
BREAKER
POWER SUPPLY
REMOTE CONTROL
REMOTE
CONTROL UNIT
5.3. Unit wiring
• Before attaching the cable to terminal block.
5.3.1. Power supply cable
200 mm
Earth cable
220 mm
Power supply cable
A. For solid core wiring
(1) To connect the electrical terminal, follow the below diagram
and connect after looping it around the end of the cable.
(2) Use the specifi ed cables, connect them securely, and fasten
them so that there is no stress placed on the terminals.
(3) Use an appropriate screwdriver to tighten the terminal
screws.
Do not use a screwdriver that is too small, otherwise, the
screw heads may be damaged and prevent the screws from
being properly tightened.
(4) Do not tighten the terminal screws too much, otherwise, the
screws may break.
(5) See the table for the terminal screw tightening torques.
(6) Please do not fi x two power supply cables with one screw.
Strip 25 mm
Loop
Screw with
Cable
special washer
Cable end
(Loop)
Terminal block
Cable
WARNING
Screw with
special washer
Cable end
(Loop)
• When using solid core cables, do not use the attached
ring terminal. If you use the solid core cables with the
ring terminal, the ring terminal's pressure bonding may
malfunction and cause the cables to abnormally heat up.
B. For strand wiring
(1) Use ring terminals with insulating sleeves as shown in the
fi gure below to connect to the terminal block.
(2) Securely clamp the ring terminals to the cables using an
appropriate tool so that the cables do not come loose.
(3) Use the specifi ed cables, 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 for the terminal screw tightening torques.
(7) Please do not fi x two power supply cables with one screw.
Strip 10 mm
Screw with
special washer
Ring terminal
Cable
Ring terminal
Cable
Sleeve
Screw with
special washer
Ring
terminal
En-10
Terminal block
WARNING
• Use ring terminals and tighten the terminal screws to the
specifi ed torques, otherwise, abnormal overheating may be
produced and possibly cause heavy damage inside the unit.
Tightening torque
M4 screw
(Power supply /L, N, GND)
1.2 to 1.8 N·m
(12 to 18 kgf·cm)
5.3.2. Transmission and Remote control cable
6.1. Setting the address
Manual address setting method
CAUTION
• When setting the DIP switch, use an insulated screw driver.
40 mm
Shielded
cable (no fi lm)
75 mm
Transmission cable
• Connect remote control and transmission cables as shown
in Fig. C.
Fig. C
Different
diameter
OKNO GOODNO GOOD
WARNING
• Tighten the terminal screws to the specified torques,
otherwise, abnormal overheating may be produced and
possibly cause heavy damage inside the unit.
Connect to
one side
Tightening torque
M4 screw
(Transmission /X1, X2)
0.8 to 1.2 N·m
( 8 to 12 kgf·cm)
• When handling the PCB, static electricity charged in the
body may cause malfunction of the PCB. Follow the cautions
below:
• Touch metal part of the indoor and outdoor units for more
than 10 seconds to discharge static electricity charged in
the body.
• Do not touch terminals of parts and patterns implemented
on the PCB.
(1) Remove the cable clamp.
Cord clamp
Screw
(2) Remove screws of the heat exchanger, and then remove
grounding wire.
(3) Remove three thermistors.
(4) Remove the connector.
CAUTION
• To peel the fi lm from the lead cable, use a dedicated tool that
will not damage the conductor cable.
• When installing a screw on the terminal block, do not cut the
cable by overtightening the screw. On the other hand, an
undertightened screw can cause faulty contact, which will
lead to a communication failure.
6. FIELD SETTING
• Refer to the following three items for setting the FIELD
SETTING address. The respective settings are included
below.
(1) IU AD, REF AD SW settings ............ This section
(2) Remote control settings ................... Refer to the wired or
wireless remote control
manual for detailed
setting information. (Set
IU AD, REF AD SW to 0)
(3) Automatic address settings .............. Refer to the indoor unit
manual for detailed
setting information. (Set
IU AD, REF AD SW to 0)
Thermistor
Screw
Grounding
wire
(5) Remove screw, then remove the control unit.
Screw
Screw
Connector
Control unit
En-11
(6) Set the switches on the PCB.
Indoor unit address
1
Rotary switch (IU AD × 1)...Factory setting “0”
Rotary switch (IU AD × 10)...Factory setting “0”
When connecting multiple indoor units to one refrigerant
system, set the address at IU AD SW as shown in the
Table A.
Refrigerant circuit address
2
Rotary switch (REF AD × 1)...Factory setting “0”
Rotary switch (REF AD × 10)...Factory setting “0”
In the case of multiple refrigerant systems, set REF AD
SW as shown in the Table A for each refrigerant system.
Set to the same refrigerant circuit address as the outdoor
Do not set the indoor unit address (IU AD SW) at 64 to 99.
It may result failure.
Remote controller address
3
Rotary switch (RC AD SW)...Factory setting “0”
When connecting multiple indoor units to one standard
wired remote controller, set the address at (RC AD SW) in
sequence from 0.
Setting
Setting
range
Type of switch
.
.
.
Indoor unit
address
0–63
Setting
example
2
IU AD × 10IU AD × 1
Refrigerant
circuit
0–99
address
•
If working in an environment where the wireless
Setting
example
63
REF AD × 10
REF AD × 1
remote controller can be used, the addresses can
also be set using the remote controller.
•
If setting the addresses using the wireless remote
controller, set the indoor unit address and refrigerant
circuit address to “00”.
Remote
controller
address
0–15
Setting
example
0
RC AD
Example
Indoor unit
RC AD SWRC AD SWRC AD SWRC AD SW
If 4 indoor units are connected.
Indoor unitIndoor unitIndoor unit
0123
Remote
controller
RC AD SW
Address
RC AD SW
Address
01234567
01234567
89ABCDEF
89101112131415
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6.2. Custom code setting
Function details
Selecting the custom code prevents the indoor unit mix-up.
(Up to 4 codes can be set.)
Perform the setting for both the indoor unit and the remote
controller.
Indoor
unit
Remote
controller
•
Custom code setting for indoor unit
Confusion
Code change
A B C D
A B C D
Set the DIP SET 3 SW1, SW2 referring to the Table B.
SW1SW2SW3SW
ON
OFF
Dip switch
4
"SET 3"
Table B
Custom code
A (Factory setting)BCD
DIP SW
SET 3 SW1
DIP SW
SET 3 SW2
OFFONOFFON
OFFOFFONON
6.3. Function setting
• FUNCTION SETTING can be performed with the wired or
wireless remote control.
(The remote control is optional equipment)
• Refer to the wired or wireless remote control manual for
detailed setting information. (Set IU AD, REF AD SW to 0)
• Refer to “6.1. Setting the address” for indoor unit address
and refrigerant circuit address settings.
• Turn the power of the indoor unit ON before starting the
setting.
Function
Function
indicator
indicator
temperature
temperature
External
number
Filter
interval
Filter
action
Cool air
trigger
Hot air
trigger
Auto
restart
control
Error
report
target
11
13
30
31
40
46
47
Setting
number
00Default
01Longer
02Shorter
00Enable
01Disable
Display
only on
02
central
remote
control
00Default
01 Adjust (1)
02 Adjust (2)
00Default
01 Adjust (1)
02 Adjust (2)
03 Adjust (3)
00Enable
01Disable
00 Start/Stop
Emergency
01
stop
00All
Display
only on
01
central
remote
control
Default
○
○
○
○
○
○
○
6.3.1. Button name and function
Details
Adjust the fi lter cleaning interval
notifi cation. If the notifi cation
is too early, change to setting
01. If the notifi cation is too late,
change to setting 02.
Enable or disable the fi lter
indicator. Setting 02 is for use
with a central remote control.
Adjust the cool air trigger
temperature. To lower the trigger
temperature, use setting 01. To
raise the trigger temperature,
use setting 02.
Adjust the hot air trigger
temperature. To lower the trigger
temperature by 6 degrees C, use
setting 01. To lower the trigger
temperature by 4 degrees C, use
setting 02. To raise the trigger
temperature, use setting 03.
Enable or disable automatic
system restart after a power
outage.
Allow an external controller
to start or stop the system,
or to perform an emergency
shutdown.
* If an emergency shutdown is
performed from an external
controller, all refrigerant systems will be disabled.
Change the target for reporting
errors. Errors can either be
reported in all locations, or
only on the wired remote.
* Turning on the power indoor units initializes EEV, so
make sure the piping air tight test and vacuuming have
been conducted before turning on the power.
* Also check again to make sure no wiring mistakes were
made before turning on the power.
FILTER indicator lamp (Red)
TIMER indicator lamp (Orenge)
OPERATION indicator lamp (Green)
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6.3.2. Checking the function settings
(2) Others
• Press and hold the “MANUAL AUTO” button on the indoor
unit for 3 seconds to check the function settings. It is
necessary to disconnect the power in order to return to
normal operation mode.
(1) Indoor unit and refrigerant address indication
Indication pattern
Indicator name
Indoor unit addressRefrigerant address
OPERATION
indicator lamp
ON
(Green)
TIMER
indicator lamp
(Orange)
Address: tens place
(0.5s ON/0.5s OFF)
FILTER
indicator lamp
Address: ones place (0.5s ON/0.5s OFF)
(Red)
• Indoor unit address example
Indication pattern
Flash
(1.0s ON/1.0s OFF)
(Example) ADDRESS : 24
1 cycle 12 sec
OPERATION
indicator lamp
(Green)
TIMER
indicator lamp
(Orange)
FILTER
indicator lamp
(Red)
ON
OFF
ON
OFF
ON
OFF
0.5s
0.5s
0.5s 0.5s 0.5s
0.5s
0.5s 0.5s
0.5s
0.5s
0.5s 0.5s
ON
10 sec
8 sec
Indication pattern
Indicator NameIndication pattern
OPERATION
indicator lamp (Green)
TIMER
indicator lamp
(Orange)
FILTER
indicator lamp
(Red)
Function number; tens place
(0.5s ON/0.5s OFF)
Function number; ones place
(0.5s ON/0.5s OFF)
Setting number: (0 - 9)
(0.5s ON/0.5s OFF)
(Example) Function : 31, Setting number : 2
1 cycle 12 sec
OPERATION
indicator lamp
(Green)
TIMER
indicator lamp
(Orange)
FILTER
indicator lamp
(Red)
ON
0.5s
0.5s
0.5s
0.5s
0.5s
0.5s 0.5s 0.5s
0.5s
0.5s
OFF
ON
0.5s
OFF
ON
0.5s
OFF
6.4.
Connecting the wired remote controller
9 sec
11 sec
10 sec
(If necessary)
In order to connect the wired/simple remote control to the
external switch controller, the wire assembly (Accessories)
which is attached to the indoor unit needs be connected to the
end of remote control cable.
(1) Use a tool to cut off the terminal on the end of the remote
control
cable
end of the
, and then remove the insulation from the cut
cable
as shown below.
• Refrigerant address example
(Example) ADDRESS : 30
1 cycle 12 sec
OPERATION
indicator lamp
(Green)
TIMER
indicator lamp
(Orange)
FILTER
indicator lamp
(Red)
ON
OFF
ON
OFF
ON
OFF
1.0s1.0s1.0s1.0s
1.0s1.0s1.0s
0.5s
0.5s 0.5s 0.5s 0.5s
0.5s
OFF
9 sec
• Setting details
Function numberItemSetting number
01Indoor unit address00~63
02Refrigeration address00~99
For use with a remote control, set all rotary switches to
0, and refer to “6.1. Setting the address” for details.
All switches are set to 0 at the factory.
20 mm
Remote control
cable
(2) Connect the remote controller cable and wire assembly as
shown below.
White
Red
Black
White
Red
Remote
control
cable
Insutated
connection
Black
(3) Connect the cable of wired remote control unit to the PCB of
Control unit.
(4) Fasten the remote control cable to the EV kit cable with the
binder as shown below.
En-14
PCB
Connector
10 mm or less
To EV kit
Binder
6.5. Installing the control unit
•
Refer to 6.1 (1) ~ (5) to install the control unit, thermistor, and grounding wire.
(1) Connect the connection cable.
OKNO GOOD
EV kit cable
(2) Install the cable clamp.
Cable clamp
L, N: Power supply cable
X1, X2: Transmission cable
Connect
Cable
Screw hole
Do not route the cables over the screw hole.
EV kit cable
After connecting the EV kit cable, slide the tube
(included with the EV kit) over the connector to
protect it.
ConnectTube
Binder (Small)
Cable
Screw hole
Screw
En-15
7. FINISHING
•
After completing the refrigerant leak check (for
details, refer to the Installation Manual of the
outdoor unit), install the insulation.
(1) Insulate between pipes.
• For rear, right, and bottom piping, overlap the connection
pipe heat insulation and indoor unit pipe heat insulation
and bind them with vinyl tape so that there is no gap.
• For left and left rear piping, butt the connection pipe heat
insulation and indoor unit pipe heat insulation together and
bind them with and vinyl tape so that there is no gap.
Overlap the insulation
Connection pipe
(Heat insulation)
Bind the pipes together so
that there is no gap.
Vinyl tape
• For left and left rear piping, wrap the area which
accommodates the rear piping housing section with cloth
tape.
Pipe
Wrap with cloth tape
Drain hose
Cloth tape
• For left and left rear piping, bind the connection cable 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 the
range within which they fi t into the rear piping housing
section.
(2) Temporarily fasten the connection cable along the
connection pipe with vinyl tape. (Wrap to about 1/3 the width
of the tape from the bottom of the pipe so that water does
not enter.)
Connection cable –
Wall pipe
Drain hose
Connection
pipe
Indoor unit pipe
(Heat insulation)
Power supply cable
Transmission cable
EV kit cable
(7) Install the front panel.
• Firstly, fi t the lower part of the front panel, and insert top
and bottom hooks. (Three top sides, six bottom sides)
Bottom hooks
(Six position)
Indoor unit
Bottom hole
(Six position)
Top holes (Two sides)
Top hole (Center)
Indoor unit
Top hooks (Two sides)
Front panel
Top hook (Center)
Front panel
• Four screws is attached.
(8) Install the intake grille.
• The fi xing axle of the intake grille is installed on the Panel.
• Lay down the intake grille.
(9) Fasten the drain hose to the outside wall, etc.
Check the condition of the drain hose and make sure that it
is routed correctly.
OK
No GoodNo Good
Drain
hose
Saddle
Lifted upWave
CAUTION
No Good
End in water
• Make sure the drain water is properly drained.
8. DECORATION PANEL INSTALLATION
(3) Securely fasten the EV kit cable to the indoor unit pipe.
(4) Conceal the tube protecting the EV kit connector with the
product, etc., so that the customer cannot access it.
(5) Fasten the connection pipe to the outside wall with saddles,
etc.
(Saddle)
Wall
Pipe
(Outside wall cap)
(Outdoors)
(6) Fill the gap between the outside wall pipe hole and the pipe
with sealer so that rain water and wind cannot blow in.
En-16
• Operate according to the installation Manual DECORATION
PANEL.
• Be sure to confi rm there is no gap between the panel and
main unit after installing the DECORATION PANEL.
(Sealer putty)
9. TEST OPERATION
11. ERROR CODES
9.1.
Test operation using PCB (Outdoor unit)
• Refer to the Installation Manual for the outdoor unit if the
PCB for the outdoor unit is to be used for the test operation.
9.2. Test operation using Remote Controller
• Refer to the Installation Manual for the remote control unit
to perform the test operation using the wireless remote
control unit.
• When the air conditioner is being test run, the OPERATION
and TIMER indicator lamps fl ash slowly at the same time.
10. 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
Has the indoor unit been
installed correctly?
Has there been a check
for gas leaks (refrigerant
pipes)?
Has heat insulation work
been completed?
Does water drain easily
from the indoor units?
Is the voltage of the
power source the same
as that indicated on the
label on the indoor unit?
Are the wires and pipes
all connected completely?
Is the indoor unit
grounded?
Is the connection cable
the specified thickness?
Are the inlets and outlets
free of any obstacles?
After installation is
completed, has the proper
operation and handling
been explained to the
user?
Is the EV kit connected?No cooling, No heating
If not performed
correctly
Vibration, noise,
indoor unit may drop
No cooling, No heating
Water leakage
Water leakage
No operation, heat or
burn damage
No operation, heat or
burn damage
Short circuit
No operation, heat or
burn damage
No cooling, No heating
CHECK
BOX
If you use a wired type remote control, error codes will appear
on the remote control display. If you use a wireless remote
control, the lamp on the photodetector unit will output error
codes by way of blinking patterns. See the lamp blinking
patterns and error codes in the table below.
Abnormal display
OPERATION
lamp
(green)
(1) (2)
(1) (4)
(1) (6)
(3) (1)
(3) (2)
(4) (1)
(4) (2)
(5) (1)
(5) (3)
(9) (15)
Display mode : 0.5s ON / 0.5s OFF
: 0.1s ON / 0.1s OFF
( ) : Number of fl ashing
Wired Remote Controller Display
TIMER
lamp
(orange)
FILTER
lamp
(red)
Wired
Remote
Controller
Error CODE
Error code
Abnormal
contents
Remote control
abnormal
communication
Anomalous
network
communications
Abnormal
parallel
communication
Abnormal power
frequency
Abnormal model
information
/ abnormal
EEPROM
accession
Abnormal room
temperature
thermistor
Abnormal
indoor heat
exchanger
temperature
thermistor