INDOOR UNIT (Cassette Type)
INSTALLATION MANUAL
For authorized service personnel only.
AIR CONDITIONER
English
PART No. 9365388075
Refer to the rating label with the serial number.
MADE IN THAILAND
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1. SAFETYPRECAUTIONS
WARNING!
This mark indicates procedures which, if improperly performed,
might lead to the death or serious injury of the user.
CAUTION!
This mark indicates procedures which, if improperly performed,
might possibly result in personal harm to the user, or damage
to property.
WARNING
Fortheairconditionertooperatesatisfactorily,installitasoutlinedinthis
installationinstructionsheet.
Connecttheindoorunitandoutdoorunitwiththeroomairconditionerpiping
andcordsavailablefromourstandardparts.Thisinstallationinstructionsheet
describesthecorrectconnectionsusingtheinstallationsetavailablefromour
standardparts.
Installationworkmustbeperformedinaccordancewithnationalwiring
standardsbyauthorizedpersonnelonly.
Ifrefrigerantleakswhileworkisbeingcarriedout,ventilatethearea.Ifthe
refrigerantcomesincontactwithaame,itproducesatoxicgas.
Donotturnonthepoweruntilallinstallationworkiscomplete.
Duringinstallation,makesurethattherefrigerantpipeisattachedrmlybefore
yourunthecompressor.
Do not operate the compressor under the condition of refrigerant piping not attached
properly with 2-way or 3-way valve open. This may cause abnormal pressure in the
refrigeration cycle that leads to breakage and even injury.
Duringthepump-downoperation,makesurethatthecompressoristurnedoff
beforeyouremovetherefrigerantpiping.
Do not remove the connection pipe while the compressor is in operation with 2-way or
3-way valve open. This may cause abnormal pressure in the refrigeration cycle that
leads to breakage and even injury.
Wheninstallingandrelocatingtheairconditioner,donotmixgasesotherthan
thespeciedrefrigerant(R22)toentertherefrigerantcycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to
an abnormally high value and cause breakage, injury, etc.
• Be careful not to scratch the air conditioner when handling it.
• After installation, explain correct operation to the customer, using the operating manual.
• Let the customer keep this installation instruction sheet because it is used when the air
conditioner is serviced or moved.
• The maximum length of the piping is shown in Table 1. If the units are further apart than
this, correct operation cannot be guaranteed.
2. ABOUTTHISPRODUCT
2.1.Accessories
INDOORUNITACCESSORIES
NameandShape Q’ty Description
Operating Manual
1
Installation manual
1
(This book)
Coupler heat insulation
2
For indoor side pipe joint
Special nut A
(large ange)
4
For installing indoor unit
Special nut B
(small ange)
4
For installing indoor unit
Template
1
For ceiling hole cutting
Binder
2
(large)
For remote controller cable binding
Blower cover insulation
2
For discharged air
Hook wire
2
For installing intake grille
REMOTECONTROLLERACCESSORIES
NameandShape Q’ty Description
Remote controller
1
Installation to indoor unit
Remote controller cable
1
For connecting the remote controller
Remote controller cord clamp
10
For installing the remote controller
cord
Screw
10
For installing the remote controller
cord clamp
2
For installing the remote controller
Binder
1
For remote controller and remote
controller cable binding
OUTDOORUNITACCESSORIES
The types of outdoor units are shown in Fig. 4.
TYPEA TYPEB
Hexagon
wrench
1 -
For operating the refrigerant
valve on the outdoor unit
Drain pipe
1 1
For outdoor unit drain piping
work (May not be supplied,
depending on the model.)
Cap (drain)
2 1
1. SAFETY PRECAUTIONS ……………………………………………………………… 1
2. ABOUT THIS PRODUCT ………………………………………………………………… 1
2.1. Accessories ………………………………………………………………………… 1
3. GENERAL SPECIFICATION …………………………………………………………… 2
3.1. Pipe requirement …………………………………………………………………… 2
3.2. Electrical requirement ……………………………………………………………… 2
4. INSTALLATION WORK ………………………………………………………………… 2
4.1. Selecting an installation location ………………………………………………… 2
4.2. Indoor unit installation ……………………………………………………………… 3
4.3. Installing the drain pipe …………………………………………………………… 5
4.4. Outdoor unit installation …………………………………………………………… 5
5. PIPE INSTALLATION …………………………………………………………………… 6
5.1. Flare processing …………………………………………………………………… 6
5.2. Bending pipes ……………………………………………………………………… 6
5.3. Connection pipes …………………………………………………………………… 6
5.4. Vacuum process …………………………………………………………………… 7
5.5. Gas leakage inspection …………………………………………………………… 7
5.6. Installing the coupler heat insulation ……………………………………………… 7
6. ELECTRICAL WIRING …………………………………………………………………… 7
7. GRILLE INSTALLATION ………………………………………………………………… 9
8. POWER ………………………………………………………………………………… 10
9. REMOTE CONTROLLER INSTALLATION ………………………………………… 10
9.1. Electrical requirement …………………………………………………………… 10
9.2. Dimensions ……………………………………………………………………… 10
9.3. Name of parts …………………………………………………………………… 10
9.4. Installation ………………………………………………………………………… 10
9.5. Setting the DIP switch …………………………………………………………… 11
9.6. Connection of Remote Controller Cable ……………………………………… 11
10. SPECIAL INSTALLATION METHODS ……………………………………………… 12
10.1. Group control …………………………………………………………………… 12
10.2. Auto restart ……………………………………………………………………… 12
10.3. Memory backup function ………………………………………………………… 12
11. TEST RUN ……………………………………………………………………………… 12
12. OPENING THE DUCT CONNECTION HOLE ……………………………………… 13
13. CUSTOMER GUIDANCE ……………………………………………………………… 14
INSTALLATIONMANUAL
PART No. 9365388075
Indoor Unit (Cassette Type)
Contents
Note: This manual describes how to install the air conditioner described above. Handling
and installation shall only be done by professionals as outlined in this manual.
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3. GENERALSPECIFICATION
3.1.Piperequirement
Table1
Diameter
Maximum length
Maximum height
(between indoor
and outdoor)
Small Large
9.53 mm
(3/8")
15.88 mm
(5/8")
25 m
(82 ft)
15 m
(50 ft)
• Use 0.7 mm to 1.2 mm thick pipe.
• Use pipe with water-resistant heat insulation.
• Use pipe that can withstand a pressure of 3,040 kPa.
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 specied, 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).
3.2.Electricalrequirement
• Electric wire size and fuse/breaker capacity:
Table2
Power supply cable
(mm
2
)
MAX 4.0*2
MIN 3.5
Connection cable
(mm
2
)
MAX 2.5*1
MIN 1.0*1
Fuse/Breaker capacity (A) 30
• Use conformed cord with Type 245 IEC57 (*1) or Type 245 IEC66 (*2).
• Install all electrical works in accordance to the 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)
4. INSTALLATIONWORK
4.1.Selectinganinstallationlocation
Especially, the installation place is very important for the split type air conditioner because
it is very difcult to move from place to place after the rst installation.
Decide the mounting position together with the customer as follows:
The discharge direction can be selected as shown below.
Fig.1
100 mm (4") or more
Piping position
100 mm (4")
or more
(4 directions) (3 directions) (2 directions) (2 directions)
100 mm (4") or more
1,000 mm (39")
or more
CAUTION
Since 2-way outlet as shown below causes performance problems, do not set it.
Pipe
Pipe
INDOORUNIT
(1) Install the indoor unit on a place having a sufcient 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 (Fig. 2).
(4) The ceiling rear height as shown in Fig. 3.
(5) A place from where the air can be distributed evenly throughout the room by the unit.
(6) A place from where drainage can be extracted outdoors easily.
(7) Install the unit where noise and vibrations are not amplied.
Fig.2
Strong and durable ceiling
2,300 mm (91")
or more
1,000 mm (39")
or more
1,000 mm (39")
or more
Obstruction
Floor
This mechanism enables the cassette body to move 35 mm downward and realizes instal-
lation to the space of 200 mm. No special works and option is needed.
Fig.3
Youcanselect2-waysetting
(A)Standardsetting (B)Slendersetting
235 mm (9-1/4")
or more
200 mm (7-7/8")
or more
OUTDOORUNIT
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 se-
curely.
(1) If possible, do not install the unit where it will exposed to direct sunlight. (If necessary,
install a blind that does not interfere with the air ow.)
(2) Install the outdoor unit in a place where it will be free from being dirty or getting wet by
rain as much as possible.
(3) Install the unit when connection to the indoor unit is easy.
(4) During heating operation, drain water ows from the outdoor unit.
Therefore, install the outdoor unit in a place where the drain water ow will not be
obstructed.
(5) Do not place animals and plants in the path of the warm air.
(6) Take the air conditioner weight into account and select a place where noise and
vibration are small.
(7) Select a place so that the warm air and noise from the air conditioner do not disturb
neighbors.
(8) Provide the space shown in Fig. 4 so that the air ow is not blocked. Also for efcient
operation, leave open three of the four directions front, rear, and both sides.
(9) Do not set the unit directly on the ground because it will cause trouble.
(10) Set the unit on a strong stand, such as one made of concrete blocks to minimize
shock and vibration.
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• Pull up while pressing the B section (Fig. 7).
Fig.7PartAdetailview
B
Fig.8PartAsectionview
Grille hinge wire
(4) Remove the intake grille.
REMOVINGTHEPANELFRAME
• Pull up the corner sections (A) of the panel frame as shown in Fig. 9 (4 locations).
Fig.9PartAdetailview
A
A
A
A
B
• Pull up in the direction of the arrow while holding down the C section of Fig. 10 (4 loca-
tions).
Fig.10PartBdetailview
C
Fig.4
Air
[TYPEA] [TYPEB]
30 cm
(12")
or more
30 cm (1')
or more
60 cm (2')
or more
60 cm (2')
or more
30 cm (1')
or more
30 cm
(1')
or more
30 cm (12")
or more
30 cm
(12")
or more
60 cm (24")
or more
60 cm (24")
or more
AIR
4.2.Indoorunitinstallation
WARNING
Install the air conditioner in a location which can withstand a load do at least 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 inju-
ries.
If the job is done with the panel frame only, there is a risk that the unit will come loose.
Please take care.
REMOVINGTHEINTAKEGRILLE
(1) Push the intake grille pushbuttons (two places).
(2) Open the intake grille.
Fig.5
Push
Open
(3) Remove the grille hinge wire.
Fig.6
A
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Fig.11
Panel frame
Panel base
CAUTION
Always remove the panel frame after removing the intake grille.
1.POSITIONTHECEILINGHOLEANDHANGINGBOLTS
Fig.12
940 mm ( 37")
750 mm (29-17/32")
750 mm (29-17/32")
(Hanging bolt position)
890 mm ( 35-3/64")
(Ceiling opening measurement)
(Hanging bolt position)
(Grille measurement)
2.HANGINGPREPARATIONS
• Firmly fasten the hanging bolts as shown in Fig. 13 or by another method.
• Install the hanging bolts at a place where they would be capable of holding a weight of
at least 50 kgf per bolt.
Fig.13
Hole-in anchor
Hole-in plug
Hanging bolt
M10
Concrete
Insert
Fig.14
(A)Standardsetting
298.5 mm (11-3/4")
305.5 mm (12")
Drain pipe (I.D. 32 mm)
248.5 mm
(9-25/32")
60 mm
(2-3/8")
(2-3/4")
(3-15/16")
(5")
70 mm
100 mm
235 mm (9-1/4")
127 mm
(B)Slendersetting
298.5 mm (11-3/4")
305.5 mm (12")
Drain pipe (I.D. 32 mm)
248.5 mm
(9-25/32")
60 mm
(2-3/8")
(2-3/4")
(3-15/16")
(3-5/8")
70 mm
100 mm
200 mm (7-7/8")
92 mm
3.BODYINSTALLATION
[The ceiling rear height is 235 mm (9-1/4") or more.] [Standard setting]
[The ceiling rear height is 200 mm (7-7/8") or more.] [Slender setting]
(1) Install special nut A, then special nut B onto the hanging bolt (Fig. 15).
(2) Raise the body and mount its hooks onto the hanging bolt between the special nuts
(Fig. 15).
(3) Turn special nut B to adjust the height of the body (Fig. 15).
(4) Leveling
Using a level, or vinyl hose lled with water, ne adjust so that the body is level.
WARNING
Perform nal tightening by tightening the double nut rmly.
Fig.15
Special nut A
Ceiling
* Must t tightly against
ceiling without any gap.
Special nut B
Hanging bolt
Hook
30 mm
or more
After installing the body,
tighten the nuts.
Fig.16
Vinyl hose
* Allowable space between
the unit and the ceiling
5 mm or less
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INSTALLINGTHEPANELFRAME
Fig.17
Panel base
Panel frame
*90° Turn
* With slender setting, turn the panel frame 90° as shown in the diagram above.
Grille setting method has been changed at the marked positions on the panel frame and
panel base.
Fig.18
(A)Standardsetting (B)Slendersetting
Mark
Panel frame
No mark
Fig.19
[Example]
* Appearance of slender setting
4.3.Installingthedrainpipe
CAUTION
Install the drain pipe in accordance with the instructions in this installation instruction
sheet and keep the area warm enough to prevent condensation. Problems with the
piping may lead to water leaks.
Notes:Installthedrainpipe.
• Install the drain pipe with downward gradient (1/50 to 1/100) and so there are no rises or
traps in the pipe.
• Use general hard polyvinyl chloride pipe (VP25) [outside diameter 32 mm (1-1/4")] and
connect it with adhesive (polyvinyl chloride) so that there is no leakage.
• When the pipe is long, install supporters.
• Do not perform air bleeding.
• Always heat insulate the indoor side of the drain pipe.
• When desiring a high drain pipe height, raise it up to 800 mm (31") or less from the
ceiling within a range of 150 mm (6") from the body. A rise dimension over this range will
cause leakage.
Fig.20
Air bleeding
150 mm (6") or less
1.5 to 2 m (5 to 6.5 ft)
Supporter
Max 800 mm
(31")
Rise
Trap
4.4.Outdoorunitinstallation
1.OUTDOORUNITPROCESSING
When the outdoor unit will be exposed to strong wind, fasten it with bolts at the four places
indicated by the arrows (Fig. 21).
Fig.21
[TYPEA]
Air ow
Drain cap
19 mm (3/4")
333 mm
(13-7/64")
804 mm (31-21/32")
Bottom
Drain pipe mounting hole
[TYPEB]
Bottom
Drain cap
Drain pipe mounting hole
603 mm
Air ow
343 mm
Bottom plate
Drain pipe mounting hole
Drain pipe
CAUTION
If this product is used in an area where the
temperature falls below freezing for long
periods of time, do not connect the drain pipe.
Instead, allow the water to drain into a drain
pan.
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2.OUTDOORUNITCONNECTIONCABLEANDPIPECONNECTION
PREPARATIONS
(1) Remove outdoor unit valve cover and terminal cover.
Fig.22
[TYPEA]
* After removing the screws,
remove valve cover and
terminal cover.
Terminal
cover
Valve
cover
Valve
[TYPEB]
Terminal
cover
(2) Connect the piping, connection cable and power supply cord.
5. PIPEINSTALLATION
5.1.Flareprocessing
(1) Cut the connection pipe with pipe cutters so that the pipe is not deformed.
(2) Holding the pipe downward so that cuttings cannot enter the pipe and remove the
burrs.
(3) Remove the are nut from the indoor unit pipe and outdoor unit and assemble as
shown in (Table 3) and insert the are nut onto the pipe, and are with a aring tool.
(4) Check if the ared part “L” (Fig. 23) is spread uniformly and that there are no cracks.
Table3
Pipe Flarenut
Small pipe Small (width across ats 22 mm)
Large pipe Large (width across ats 27 mm)
Fig.23
L dimension
Small pipe (9.53 mm dia.)
1.8 to 2.0 mm
Large pipe (15.88 mm dia.)
2.2 to 2.4 mm
Width across ats
L
5.2.Bendingpipes
The pipes are shaped by your hands. Be careful not to collapse them.
Fig.24
Good
Extend the pipe
by unwinding it.
Bad
Do not bend the pipes in an angle more than 90°.
When pipes are repeatedly bent or stretched, the material will harden, making it difcult to
bend or stretch them any more. Do not bend or stretch the pipes more than three times.
When bending the pipe, do not bend it as is.
The pipe will be collapsed. In this case, cut
the heat insulating pipe with a sharp cutter
as shown in Fig. 25, and bend it after expos-
ing the pipe. After bending the pipe as you
want, be sure to put the heat insulating pipe
back on the pipe, and secure it with tape.
Fig.25
Heat insulating
pipe
Pipe
Cut line
Cutter
CAUTION
To prevent breaking of the pipe, avoid sharp bends.
Bend the pipe with a radius of curvature of 150 mm or over.
If the pipe is bent repeatedly at the same place, it will break.
5.3.Connectionpipes
(1)Indoorunitside
Fig.26
Indoor unit
Large pipe
Small pipe
CAUTION
Be sure to apply the pipe against the port on the indoor unit correctly. If the centering
is improper, the are nut cannot be tightened smoothly. If the are nut is forced to turn,
the threads will be damaged.
Do not remove the are nut from the indoor unit pipe until immediately before connect-
ing the connection pipe.
When the are nut is tightened properly by your hand, hold the body side coupling with a
separate spanner, then tighten with a torque wrench (Fig. 27).
Fig.27
Holding spanner
Body side
90º
Torque wrench
CAUTION
Hold the torque wrench at its grip, keeping it in the right angle with the pipe as shown in
Fig. 27, in order to tighten the are nut correctly.
Table4:Flarenuttighteningtorque
Pipe Tighteningtorque
Small pipe 30.4 to 34.3 N·m (310 to 350 kgf·cm)
Large pipe 73.5 to 78.4 N·m (750 to 800 kgf·cm)
CAUTION
Be sure to connect the large pipe after connecting the small pipe completely.
(2)Outdoorunitside
Tighten the are nut of the connection pipe at the outdoor unit valve connector. The
tightening method is the same as that as at the indoor side.
Fig.28
(Small pipe)
Connection pipe
(Large pipe)
2-way valve
3-way valve
Flare nut
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5.4.Vacuumprocess
1.VACUUM
(1) Remove the cap, and connect the gauge manifold and the vacuum pump to the
charging valve by the service hoses.
(2) Vacuum the indoor unit and the connecting pipes until the pressure in them lowers to
below 1.5 mmHg.
(3) Disconnect the service hoses and t the cap to the charging valve (Tightening torque:
70 to 90 kgf·cm).
(4) Remove the blank caps, and fully open the spindles of the 2-way and 3-way valves
with a hexagon wrench (Torque: 2-way valve: 70 to 90 kgf·cm, 3-way valve: 100 to
120 kgf·cm).
(5) Tighten the blank caps of the 2-way valve and 3-way valve to the specied torque
(200 to 250 kgf·cm).
Fig.29
Refrigerant pipe
Outdoor unit
Service hose
with valve
core
Blank cap
Hexagon wrench
Use a 4 mm
hexagon wrench.
3-way valve
Cap
Charging
valve
Fig.30
LO
HI
Gauge manifold
Vacuum pump
Service hose
2.ADDITIONALCHARGE
Refrigerant suitable for a piping length of 7.5 m is charged in the outdoor unit at the fac-
tory.
When the piping is longer than 7.5 m, additional charging is necessary.
For the additional amount, see the table below.
Table5
Pipe length
7.5 m
(25 ft)
10 m
(33 ft)
15 m
(49 ft)
20 m
(66 ft)
25 m
(82 ft)
Additional
refrigerant
Heat & Cool
(Reverse cycle)
None
100 g
(3.5 oz)
300 g
(10.6 oz)
500 g
(17.6 oz)
700 g
(24.7 oz)
Cooling model None
50 g
(1.8 oz)
150 g
(5.3 oz)
250 g
(8.8 oz)
350 g
(12.3 oz)
Between 7.5 m and 25 m, when using a connection pipe other than that in the table,
charge additional refrigerant with 40 g (1.4 oz)/1 m (3.3 ft) (Reverse cycle model), 20 g
(0.71 oz)/1 m (3.3 ft) (Cooling model) as the criteria.
CAUTION
When charging the refrigerant, always use a measuring cylinder.
Add refrigerant from the charging valve after the completion of the work.
5.5.Gasleakageinspection
CAUTION
After connecting the piping, check the joints for gas leakage with gas leak detector.
5.6.Installingthecouplerheatinsulation
After checking for gas leaks, insulate by wrapping insulation around the two parts (large
and small) 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.
Fig.31
CAUTION
Must t tightly against body without any gap.
Body
Coupler heat
insulation
Be sure to overlap
the insulation
Coupler heat insulation
No gap
6. ELECTRICALWIRING
CAUTION
Before starting work, check that power is not being supplied to the outdoor unit.
Match the terminal board numbers and connection cord colors with those of the indoor
unit side.
Erroneous wiring may cause burning of the electric parts.
Connect the connection cords and the power supply cord rmly to the terminal board.
Imperfect installation may cause a re.
Always fasten the outside covering of the connection cord and the power supply cord
with cord clamps. (If the insulator is chafed, electric leakage may occur.)
Always connect the ground wire.
HOWTOCONNECTWIRINGTOTHETERMINALS
Forstrandwiring
(1) Use ring terminals with insulating sleeves as shown in the gure 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 specied 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 6 for the terminal screw tightening torques.
Fig.32
Strip 10 mm (13/32")
Ring terminal
Sleeve
Screw with
special washer
Ring terminal
Terminal board
Terminal block
Wire
Screw with
special washer
Ring terminal
Wire
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WARNING
Use ring terminals and tighten the terminal screws to the specied torques, otherwise,
abnormal over-heating may be produced and possibly cause heavy damage inside the
unit.
Table6
Tighteningtorque
M4 screw 10 to 16 in.lbs (12 to 18 kgf·cm)
1.INDOORUNITSIDE
(1) Remove the control box cover and cover (wire) B and install the connection cord.
Fig.33
Cover (wire) B
Control box cover
(2) After wiring is complete, clamp the remote controller cord and connection cord with the
cord clamp.
(3) Install the control box cover and cover (wire) B.
Fig.34
Cord clamp
Connection cord
(To the outdoor unit)
Remote controller cord
Fig.35
Connection
cord
Terminal board
(Indoor unit)
Remote
controller
Black
White
Red
Terminal
board
Outdoor
unit
Ceilingheightsetting
Set the DIP switch for the ceiling height according to the table below.
Table7
Ceiling height
(m)
DIP-SW4
1 2 3
2.5 ~ 3.0 Normal — OFF OFF
3.0 ~ 3.5 High ceiling 1 — ON OFF
More than 3.5 High ceiling 2 — OFF ON
Less than 2.5 Low ceiling — ON ON
Fig.36
1
2
3
O
F
F
SW 4
1
2
3
O
F
F
SW 1
DIP switch
(SW4)
Indoor unit
PC board
Indoor unit PC board
CAUTION
If the setting for a low ceiling is selected, the capacity of the air conditioner decreases
slightly.
Do not set any switches other than those specied in this sheet. The air conditioner
may not operate correctly if any switches other than those specied are changed.
2.OUTDOORUNITSIDE
(1) Remove outdoor unit terminal cover and connect the power supply cord and the
outdoor unit connection cord wired at the indoor unit.
(2) Fasten the power supply cord and connection cord with cord clamp as shown in
(Fig. 37).
Fig.37
L N 1
3
2(N)
Terminal board
Power supply cord
Connection cord
Cord clamp
Control box
Remote controller
Indoor unit
side terminal
Outdoor unit
side terminal
Power line
Control line
EARTH
Power supply
Black
White
Red
(3) Install the terminal cover and valve cover.
Fig.38
[TYPEA]
Terminal
cover
Valve
cover
[TYPEB]
Terminal
cover
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7. GRILLEINSTALLATION
BLOWERCOVERINSULATION
Install the blower cover insulation only when the outlet direction is not specied.
Two blower cover insulations are packed with the indoor unit.
Install the blower cover insulation at the diffuser position shown in Fig. 39. At this time, use
the piping position as the criteria.
Fig.39
Panel
base
Drain
pan
Blower cover
insulation
(Piping direction)
2 directions example
A-A Section view
A
A
INSTALLINGTHEINTAKEGRILLE
(1) Mount the grille hinge wire to the hook shaft as shown in Fig. 40.
Fig.40
A
• Latch the grille hinge wire to the hook shaft, and fasten.
Fig.41PartAdetailview
Fig.42PartAsectionview
Hook shaft
Grille hinge
wire
(2) Install the hook wire.
• Pass the hook wire through the panel base from the rear side as shown in Fig. 43,
and fasten to the reinforced metal tting of the intake grille using a screw.
Fig.43
RFM (grille)
Hook wire
Fig.44Sectionview
Hook wire
Screw
(3) Loosen the screw, put the loop of the hook wire over it, and tighten the screw again.
CAUTION
Install the intake grille hook wire to the grille assembly. If it falls, it may cause injuries.
(4) Bring up the intake grille by pushing it up at an angle as shown in Figs. 45, 46, and
fasten.
Fig.45
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Fig.46
8. POWER
WARNING
The rated voltage of this product is 220-240 V 50 Hz.
Before turning on verify that the voltage is within the 198 to 264 V range.
Always use a special branch circuit and install a special receptacle to supply power to
the air conditioner.
Use a special branch circuit breaker and receptacle matched to the capacity of the air
conditioner. (Install in accordance with standard.)
Perform wiring work in accordance with standards so that the air conditioner can be
operated safely and positively.
Install a leakage special branch circuit breaker in accordance with the related laws
and regulations and electric company standards.
CAUTION
When the voltage is low and the air conditioner is difcult to start, contact the power
company the voltage raised.
9. REMOTECONTROLLERINSTALLATION
9.1.Electricalrequirement
When connecting the remote controller use the following wiring.
Cable Cablesize Remarks
Remote controller cable
22AWG
Sheathed PVC cable,
Polar 3 core
Use Sheathed PVC cable in
accordance with local rules
for cable.
* We recommend that you purchase our service parts for the remote controller cable.
Contact service personnel to purchase this.
9.2.Dimensions
120
18
120
30
23
9
4.5
6
Hole
15.3
4.5
45.3
63.5
83.5
33.5
4.5
12.5
Hole × 3
Hole × 2
Unit: mm
9.3.Nameofparts
• With cover open
1
2
3
4
5
6
7
8
9
10
11
12
Display panel
• Display panel
13 14 15 16
17
18
19 20 21
“ ”, “ ” (Set Temperature Button)
“ ” (Timer Mode/Clock Adjust Button)
“ ” (Day/Day OFF Button)
“ ”, “ ” (Set Time Button)
“ ” (Timer Delete Button)
“ ” (Timer Set Button)
“ ” (Start/Stop Button)
“ ” (Mode Button)
“ ” (Fan Control Button)
“ ” (Horizontal airow direction and swing Button)
“ ” (Vertical airow direction and swing Button)
Operation Lamp
Day Display
Operation Lock Display
Temperature Display
Fan Speed Display
Timer Mode Display
Operation Mode Display
Timer and Clock Display
Vertical Swing Display
Defrost Display
9.4.Installation
Open the operation panel on the front of the remote controller, remove the 2 screws
indicated in the following gure, and then remove the front case of the remote controller.
When installing the remote controller, remove the connector from the front case.
The wires may break if the connector is not removed and the front case hangs down.
When installing the front case, connect the connector to the front case.
Fig.47
SET BACK
Front case
(back side)
Rear case
Screws
Connector
When remote controller cable is embedded
(1) Embed the remote controller cable and box.
(2) Pass the remote controller cable through the hole in the rear case and connect the
remote controller cable to the remote controller terminal board specied in Fig. 48.
(3) Clamp the remote controller cable sheath with the binder as shown in Fig. 48.
(4) Cut off the excess binder.
(5) Install the rear case to the wall, box, etc., with 2 screws (Fig. 49).
(6) Clamp the remote controller cord to a wall, etc. with the remote controller cord clamp
furnished (Fig. 50).
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Fig.48
1. 12V
(Red)
2. Signal
(White)
3. COM
(Black)
7 7 7
Unit : mm
1. 12V
(Red)
Hole
Binder
2. Signal
(White)
3. COM
(Black)
CAUTION
When connecting the remote
controller cables, do not over
tighten the screws.
Fig.49[Example]
Remote controller
cable
Connector
Screws
Rear
case
Box
Remote controller
Wrap the connector and remote controller
cables with vinyl tape or some other type
of insulation as shown in the gure.
Earth (Ground) the remote controller if it has an earth (a ground) cable.
Fig.50
Remote controller cord
Remote controller
cord clamp
Tapping screw (ush heads)
9.5.SettingtheDIPswitch
CAUTION
Install the remote controller wires so as not to be direct touched with your hand.
Do not touch the remote controller PC board and PC board parts directly with your
hands.
Set the remote controller DIP switches.
Set DIP switch 1 - NO.6 to ON.
For the other switch, set it according to the situation.
[Example]
1
2
3
4
5
6
Front case (back side)
OFF ON
DIP switch 1
Do not use this
DIP switch 2
NO.
Switchstate
Detail
OFF ON
DIP switch 1
1
Group control setting
Refer to NUMBER OF CONNECTED
UNITS
2
3
4
5 Invalidity
Validity
Auto Restart
6
Invalidity
Validity
Memory backup setting
* Set to ON to use batteries for the
memory backup. If batteries are not
used, all of the settings stored in
memory will be deleted if there is a
power failure.
NUMBEROFCONNECTEDUNITS
Indoor Unit
Address
SW1-1 SW1-2 SW1-3 SW1-4
Single OFF OFF OFF OFF
1 OFF OFF OFF ON
2 OFF OFF ON OFF
3 OFF OFF ON ON
4 OFF ON OFF OFF
5 OFF ON OFF ON
6 OFF ON ON OFF
7 OFF ON ON ON
8 ON OFF OFF OFF
9 ON OFF OFF ON
10 ON OFF ON OFF
11 ON OFF ON ON
12 ON ON OFF OFF
13 ON ON OFF ON
14 ON ON ON OFF
15 ON ON ON ON
(
Factory setting)
9.6.ConnectionofRemoteControllerCable
CAUTION
When connecting the remote controller cable to the wall mounted type and the oor
type indoor unit, do not connect it to the outdoor unit or the indoor unit power terminal
block. It may cause a failure.
3
2
1
*
M4 screw
Terminal block
Black
Indoor unit
side
* Earth (Ground) the remote
controller if it has an earth
(a ground) wire.
White
Red
Remote controller
cable
Remote controller
terminal block
Outdoor unit /
power supply
terminal block
Indoor unit
PCB
It may be failed if it is connected to the outdoor unit or the terminal block for power
supply.
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10.SPECIALINSTALLATIONMETHODS
10.1. Groupcontrol
• One remote controller can control up to 16 air conditioners.
• All the air conditioners can be operated with the same setting.
WIRINGMETHOD
(1) Wire each air conditioner (power cord·indoor and outdoor units connection cord)
individually.
For details, refer to the ELECTRICAL WIRING section of the installation instruction
sheet.
(2) Connect the bus wire between the indoor units to [REMOTE CONTROLLER 2, 3] of
the indoor unit terminal board.
(3) Install the remote controller to only one air conditioner and remove the remote
controller of the other air conditioners.
Indoor unit 0
Remote
controller
cord
Bus wire
Remote controller
Indoor unit 1 Indoor unit 2 Indoor unit 15
BUSWIRE
• Use wire having a cross sectional area of 0.75 mm
2
.
• Make the total length of the bus wire (including the remote controller cord) 500 m or less.
(4) Fasten the bus wire with a binder
(large) as shown at the right.
Binder (large)
Bus wire
UNITNO.SETTINGMETHOD
(Performedatindoorunit)
(1) Remove the electric parts box.
(2) Turn off the main power.
(3) Set the unit number with the rotary switch on the indoor unit PC board so it is not
duplicated. (Unit No. 0-15)
(4) After setting the unit number, restore the electric parts box.
Rotary switch
Indoor unit PC
board
Rotary switch
DIP switch
[SW1]
(Performedbyremotecontroller)
(1) Set remote controller DIP switch 1 [1~4] .
10.2. Autorestart
SETTINGMETHOD
(Performedbyremotecontroller)
(1) Turn off the main power.
(2) Set remote controller DIP switch 1 [5] to [ON].
10.3. Memorybackupfunction
This function starts operation in accordance with the contents before operation was
stopped by pressing of the START/STOP button when the power supply to the air
conditioner was stopped and restarted by a power failure, switch, etc.
• MEMORY BACKUP FUNCTION use in the state in which the remote controller case top
is removed, set DIP switch 1 [6] of the remote controller to the [ON] position.
11.TESTRUN
Checkitems
(1) Is operation of each button on the remote control unit normal?
(2) Does each lamp light normally?
(3) Do airow 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.
[Operationmethod]
(1) If the operation lamp is on, press the START/STOP button to turn it off.
(2) Press the “
” button and “ ” button at the same time for more than
2 seconds to start the test operation.
The operation lamp will light up and “
” will be displayed on the set temperature
display.
* Pressing the START/STOP button will stop the test operation.
Test operation display
Run [Self-Diagnosis] if [EE: EE] ashes on the clock display of the remote controller.
SELF-DIAGNOSIS
(1) Stop the air conditioner operation.
(2) Press the Set Temperature buttons
and at the
same time for more than 5 seconds to start the
self-diagnosis.
* For information on the error codes, refer to the
installation manualfor the indoor unit.
(3) Press the Set Temperature buttons
and at the
same time to stop the self-diagnosis.
Example: Self-diagnosis check
Unit number (usually “00”)
Error code
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Table8
Error Code Error contents
Communication error
(indoor unit remote controller)
Communication error
(indoor unit outdoor unit)
Room temperature sensor open
Room temperature sensor shortcircuited
Indoor heat exchanger temperature sensor open
Indoor heat exchanger temperature sensor shortcircuited
Outdoor heat exchanger temperature sensor open
Outdoor heat exchanger temperature sensor shortcircuited
Power source connection error
Float switch operated
Outdoor temperature sensor open
Outdoor temperature sensor shortcircuited
Discharge pipe temperature sensor open
Discharge pipe temperature sensor shortcircuited
Outdoor high pressure abnormal
Discharge pipe temperature abnormal
Model abnormal
Indoor fan abnormal
Outdoor signal abnormal
Outdoor EEPROM abnormal
[OUTDOORUNIT]
When the outdoor temperature drops, the outdoor unit’s fans may switch to low speed.
ERROR:HEAT&COOLMODEL(REVERSECYCLE)ONLY
The LED lamps operate as follows (Table 9) according to the error contents.
Table9
Errordisplay
Errorcontents
LED1 LED2
ON
0.1 sec.
OFF
ON
0.1 sec.
OFF
Model abnormal or
EEPROM abnormal
Quick ash continued Quick ash continued
ON
0.5 sec.
2 sec.
OFF
ON
OFF
Power source
connection error
1 quick ash repeated Lighting continued
0.5 sec.
2 sec.
ON
OFF
ON
OFF
Discharge temperature
sensor error
2 quick ash repeated Lighting continued
0.5 sec.
2 sec.
ON
OFF
ON
OFF
Outdoor heat exchanger
temperature sensor error
3 quick ash repeated Lighting continued
4 quick ash repeated Lighting continued
Outdoor temperature
sensor error
5 quick ash repeated Lighting continued Communication signal error
6 quick ash repeated Lighting continued Indoor unit error
7 quick ash repeated Lighting continued
Discharge temperature
abnormal
8 quick ash repeated Lighting continued High pressure abnormal
When the fault is cleared, the LED lamp goes off.
However, for discharge pipe temperature abnormal and high pressure abnormal, the LED
lamp lights continuously for 24 hours, as long as the power is not turned off.
[CHECKINGDRAINAGE]
To check the drain, remove the water cover and ll with 2 to 3Rof water as shown in
Fig. 51.
The drain pump operates when operating in the cooling mode.
Fig.51
Drain pipe
Watering pot
Water cover
12.OPENINGTHEDUCTCONNECTIONHOLE
Fig.52
Distribution duct Fresh air
Distribution duct
CAUTION
When performing hole opening work, be careful not to damage the drain pan.
When connecting the distribution duct, to make the air ow easily, block the outlet
port with the blower cover insulation as shown by the hatched lines in Fig. 52. For the
blocking direction, refer to Fig. 39.
1.DIMENSION
Screw position and connection hole which are fresh air duct and distribution duct.
Fig.53
P. D 120 P. D 88
12-ø3.3 self tapping screw holes (for 4 mm)
ø70
ø100
45°
160 334.2
97
113
45°
Unit: mm
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2.DISTRIBUTIONDUCTANDFRESHAIRDUCTHOLEPROCESSING
Use the distribution duct hole and fresh air duct hole by removing the insulation material as
shown below.
Fig.54
Cut
Cut
Cabinet
• Cut off the part (Cabinet) indicated by the arrow in the Fig. 54 with nippers, needle nose
pliers, etc.
Fig.55
Knife
Insulation
(Inner box)
Cabinet
• Open the holes and cut the insulation with a knife.
* Be careful not to damage the internal parts.
* Be careful not to cut yourself on the cutout in the metal plate.
* Please remove the insulation (inner box) left over after cutting.
• Connect the distribution duct.
* When mounting the duct, block the gap so that there is no cold air leakage.
* Insulate the duct and cut connection.
CAUTION
The air conditioner cannot take in fresh air by itself. When connecting a fresh air duct,
always use a duct fan.
13.CUSTOMERGUIDANCE
Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature adjustment, timer, air
ow switching, and other remote controller unit operations.
(2) Cleaning and maintenance of the product, and other items such as air lters and air
louvers if applicable.
(3) Give the operating and installation manuals to the customer.
(4) If the signal code is changed, explain to the customer how it changed (the system
returns to signal code A when the batteries in the remote controller unit are replaced).
*(4) is applicable to using wireless remote controller.
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