Name and Shape Q’ty Application
This mark indicates procedures which, if 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.
This air conditioner uses new refrigerant HFC (R410A).
- Continued on back -
Contents of change
Pressure is high and cannot be measured with a conventional gauge. To prevent erroneous mixing of other
refrigerants, the diameter of each port has been changed.
It is recommended the gauge with seals –0.1 to 5.3 MPa (–76 cmHg to 53 kgf/cm2) for high pressure. –0.1 to
3.8 MPa (–76 cmHg to 38 kgf/cm
2
) for low pressure.
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.
Tool name
Gauge manifold
Charge hose
Vacuum pump
Ceiling Suspension Type
OUTDOOR UNIT
WARNING
1 Install the unit where it will not be tilted by more than 5˚.
2 When installing the outdoor unit where it may exposed to strong wind, fasten it securely.
(1) Install the outdoor unit in a location which can withstand the weight of the unit and vibration, and which can install horizontally.
(2) Provide the indicated space to ensure good airflow.
(3) 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 airflow.)
(4) Do not install the unit near a source of heat, steam, or flammable gas.
(5) During heating operation, drain water flows from the outdoor unit.
Therefore, install the outdoor unit in a place where the drain water flow will not be obstructed. (Reverse cycle model only)
(6) Do not install the unit where strong wind blows or where it is very dusty.
(7) Do not install the unit where people pass.
(8) Install the outdoor unit in a place where it will be free from being dirty or getting wet by rain as much as possible.
(9) Install the unit where connection to the indoor unit is easy.
4
CONNECTING THE PIPE
CONNECTION PIPE REQUIREMENT
ELECTRICAL REQUIREMENT
••
••
• Electric wire size and breaker capacity:
2. BENDING PIPES
CAUTION
1 To prevent breaking of the pipe, avoid sharp bends.
Bend the pipe with a radius of curvature of 150 mm or
over.
2 If the pipe is bent repeatedly at the same place, it will
break.
6.35 mm (1/4 in.)
9.52 mm (3/8 in.)
12.70 mm (1/2 in.)
15.88 mm (5/8 in.)
19.05 mm (3/4 in.)
0.80 mm
0.80 mm
0.80 mm
1.00 mm
1.20 mm
Pipe outside diameter
Thickness
Thicknesses of Annealed Copper Pipes (R410A)
SELECTING THE MOUNTING POSITION
Decide the mounting position with the customer as follows:
1
INSTALLATION PROCEDURE
CAUTION
Install heat insulation around both the gas and liquid pipes. Failure to do so may cause water leaks.
Use heat insulation with heat resistance above 120 °C. (Reverse cycle model only)
In addition, if the humidity level at the installation location of the refrigerant piping is expected to exceed 70%, install heat
insulation around the refrigerant piping. If the expected humidity level is 70-80%, use heat insulation that is 15 mm or thicker and
if the expected humidity exceeds 80%, use heat insulation that is 20 mm or thicker.
If heat insulation is used that is not as thick as specified, condensation may form on the surface of the insulation.
In addition, use heat insulation with heat conductivity of 0.045 W/(m·K) or less (at 20 °C).
••
••
• Use pipe with water-resistant heat insulation.
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) Do not install the unit where it will be exposed to direct sunlight.
(4) Install the unit where connection to the outdoor unit is easy.
(5) Install the unit where the drain pipe can be easily installed.
(6) Take servicing, etc., into consideration and leave the spaces shown
in the figure. Also install the unit where the filter can be removed.
WARNING
Select installation locations that can properly support the weight of the indoor and outdoor units. Install the units securely so
that they do not topple or fall.
CAUTION
1 Do not install where there is the danger of combustible gas leakage.
2 Do not install the unit near heat source of heat, steam, or flammable gas.
3 If children under 10 years old may approach the unit, take preventive measures so that they cannot reach the unit.
[FOR HALF CONCEALED INSTALLATION]
Ceiling panel
Ceiling panel
INDOOR UNIT
80 mm
or over
150 mm
or over
10 mm
or over
2
PREPARING INDOOR UNIT
INSTALLATION
REMOVE THE INTAKE GRILLE AND SIDE COVER
(1) Remove the two Air filters.
(2) Remove the two Intake grilles.
•For 4 Left rear drain and 5 Left drain: Remove air filters and intake
grilles at three places. (Refer to “2INDOOR UNIT INSTALLATION”.)
(3) Remove the Side cover A (Right side) and Side cover B (Right and
Left side).
•For 5 Left drain : Remove both the Side cover A (Right and Left
side). (Refer to “2 INDOOR UNIT INSTALLATION”.)
(4)
This air conditioner can be set up to intake fresh air. For information
about how to install for fresh-air intake, refer to “B FRESH-AIRINTAKE”.
INDOOR UNIT INSTALLATION
You can use the accessory template to help you install the indoor unit.
The template helps you determine the appropriate locations for suspension bolts and pipe opening (drain pipe and connection cord).
[For Half-Concealed Installation]
••
••
• Suspension-bolt pitch should be as shown in the figure.
2. SELECT PIPING DIRECTION
Select connection piping and drain piping directions.
[FOR 4 Left rear piping, 5 Left piping]
••
••
• Transfer the Drain cap and Drain cap seal.
Drain cap seal
Drain cap
Indoor unit
Drain pan
Drain cap seal
Drain cap
Push cap all the way on
(as far as it will go).
[If using anchor bolts]
(1) Drill holes for anchor bolts at the locations at which you will set the
suspension bolts. Note that anchor bolts are M10 bolts (to be obtained locally).
(2) Install the anchor bolts, then temporarily attach special nut “B” (in-
cluded) and a locally-procured M10 nut to each of the bolts.
Anchor-Bolt Strength 980 to 1470 N (100 to 150 kgf)
4. INSTALLING THE INDOOR UNIT
(1) Lift unit so that suspension bolts pass through the suspension fittings
at the sides (four places), and slide the unit back.
Wall
Ceiling
Ceiling
M10 Anchor Bolt
(Obtained locally)
Special nut B
(Included)
M10 Nut
(Obtained locally)
10 to 15 mm
1. LOCATION OF CEILING SUSPENSION BOLTS
30 mm Suspension bolt pitch 1600 mm
Dimensions
(Space Required
for Installation)
30 mm
10 mm
155 mm
300 mm
INDOOR UNIT (TOP VIEW)
INDOOR UNIT
Suspension bolt should
extend outward 30 to 75 mm.
3. DRILLING THE HOLES AND ATTACHING THE
SUSPENSION BOLTS
(1) Drill ø25 mm holes at the suspension-bolt locations.
(2) Install the bolts, then temporarily attach Special nuts A and B and a
normal M10 nut to each bolt. (The two special nuts are provided with
the unit. The M10 nut must be obtained locally.) Refer to the figure.
Bolt Strength 980 to 1470 N (100 to 150 kgf)
Ceiling panel
Special nut A (Included)
Special nut B (Included)
M10 Nut (Obtained locally)
10 to 15 mm
INDOOR UNIT
Wall
Ceiling panel
(2) Fasten the indoor unit into place by tightening-up the special “B” bolts
and the M10 nuts. Make sure that unit is secure and will not shift back
and forth.
[For Half-Concealed Installation]
When installing the indoor unit in a semi-concealed orientation, make sure
to reinforce the insulation of the unit on all sides. Drops of water may fall
from the unit if it is not thoroughly insulated.
Glass wool insulate
(10 to 20 mm thick)
INDOOR UNIT
(Top view)
Wall
Ceiling panel
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.
••
••
• 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
38 mm].
••
••
• During installation of the drain pipe, be careful to avoid applying
pressure to the drain port of the indoor unit.
••
••
• When the pipe is long, install supporters.
••
••
• Do not perform air bleeding.
••
••
• Always heat insulate (8 mm or over thick) the indoor side of the drain
pipe.
GOOD
BAD BAD
Drain pipe
Arrange the drain pipe
lower than this portion.
Lifted up
Wave
End in water
Supporter
1.5 to 2 m
(1) Install insulation for the drain pipe.
Cut the included insulation material to an appropriate size and adhere
it to the pipe.
Drain pipe
Insulation for drain pipe
(To be obtained locally. Length
should be at least 8 mm.)
Drain pipe insulation (accessories)
Indoor unit (drain port)
(2) If “1 Right rear piping” : fasten the drain pipe with VT wire so that the
pipe slopes correctly within the indoor unit.
Indoor unit (rear view)
VT wire
Drain hose
Drain pipe insulation
Drain pipe
No gap
10 mm or over
Indoor unit
OUTDOOR UNIT ACCESSORIES
For outdoor unit drain
piping work (May not be
supplied, depending on
the model.)
For filling in a gap at the
entrance of connection
cords
1
2
1
Drain pipe
Drain cap
Insulation (seal)
Q’ty
1
2
1
2
1
1
2
1
Application
Use for air conditioner
operation
For remote control unit
For mounting the remote
control unit
For remote control unit
holder installation
Adhesive type 70 × 230
For fixing the drain hose
L 280 mm
For indoor side pipe joint
(Gas pipe)
For indoor side pipe joint
(Liquid pipe)
For fixing the coupler heat
insulator
For installing indoor unit
For installing indoor unit
For positioning the indoor
unit
For connecting the piping
Large
4
Small
4
4
4
1
1
OPTIONAL PARTS
The following options are available.
••
••
• DRAIN PUMP UNIT: UTR-DPB241 (P/N 9034087001)
••
••
• When there are obstacles at the back side.
••
••
• When there are obstacles at the back and front sides.
••
••
• When there are obstacles at the back side with the installation of
more than one unit.
AIR
100 mm
or more
600 mm
or more
100 mm
or more
250 mm
or more
250 mm
or more
300 mm
or more
AIR
100-300 mm*
250 mm or more
(Service space)
300 mm
or more
600-1000 mm*
CAUTION
1 Do not use mineral oil on flared part. Prevent mineral
oil from getting into the system as this would reduce
the lifetime of the units.
2 While welding the pipes, be sure to blow dry nitrogen
gas through them.
3 The maximum lengths of this product are shown in the
table. If the units are further apart than this, correct
operation can not be guaranteed.
1. 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 flare nut (always use the flare nut attached to the indoor
and outdoor units respectively) onto the pipe and perform the flare
processing with a flare tool.
Use the special R410A flare tool, or the conventional flare tool.
When using conventional flare tools to flare R410A pipes, the dimension
A should be approximately 0.5 mm more than indicated in the table (for
flaring with R410A flare tools) to achieve the specified flaring. Use a thickness gauge to measure the dimension A.
Pipe outside
diameter
Width across flats
of Flare nut
Width across flats
Check if [L] is flared uniformly
and is not cracked or scratched.
B
Die
A
Pipe
3. CONNECTION PIPES
Indoor unit
(1) Detach the caps and plugs from the pipes.
CAUTION
1 Be sure to apply the pipe against the port on the in-
door unit correctly. If the centering is improper, the flare
nut cannot be tightened smoothly. If the flare nut is
forced to turn, the threads will be damaged.
2 Do not remove the flare nut from the indoor unit pipe
until immediately before connecting the connection
pipe.
(2) Centering the pipe against port on the indoor unit, turn the flare nut
with your hand.
To prevent gas leakage, coat the flare
surface with alkylbenzene oil (HAB).
Do not use mineral oil.
(3) Remove the filter guide.
Indoor unit
Filter guide
(4) Attach the connection pipe.
Connection pipe (Liquid)
Indoor unit
Connection pipe (Gas)
•For 2 Top piping and 3 Right piping connections, use the Auxiliary
pipe (Gas pipe) provided.
2 Top piping
Connection pipe (Gas)
Indoor unit (rear)
Connection pipe (Gas)
3 Right piping
Auxiliary pipe (Gas pipe)
(5) When the flare nut is tightened properly by your hand, use a torque
wrench to finally tighten it.
Torque wrench
Holding spanner
Body side
CAUTION
Hold the torque wrench at its grip, keeping it in the right
angle with the pipe, in order to tighten the flare nut
correctly.
Outdoor unit
Tighten the flare nut of the connection pipe at the outdoor unit valve connector. The tightening method is the same as that as at the indoor side.
3-way valve
(Liquid)
Flare nut
Connection pipe
(Liquid)
3-way valve
(Gas)
Flare nut
Connection pipe
(Gas)
3
OUTDOOR UNIT
INSTALLATION
1. OUTDOOR UNIT PROCESSING
(1) Outdoor unit to be fasten with bolts at the four places indicated by the
arrows without fail.
(2) Fix securely with bolts on a solid block. (Use 4 sets of commercially
available M10 bolt, nut and washer.)
(3) Since the drain water flows out of the outdoor unit during heating
operation, install the drain pipe and connect it to a commercial 16 mm
hose. (Reverse cycle model only)
(4) When installing the drain pipe, plug all the holes other than the drain
pipe mounting hole in the bottom of the outdoor unit with putty so
there is no water leakage. (Reverse cycle model only)
Drain pipe mounting hole
Base
Drain pipe
Bottom side
Drain cap
mounting place
Drain pipe
mounting place
650 mm
4-ø 12 hole
370 mm
Bolt
Nut
Block
Flare nut Tightening torque
6.35 mm (1/4 in.) dia.
9.52 mm (3/8 in.) dia.
12.70 mm (1/2 in.) dia.
15.88 mm (5/8 in.) dia.
19.05 mm (3/4 in.) dia.
Ceiling
INDOOR UNIT
80 mm
or over
Ceiling
150 mm
or over
10 mm
or over
1Right rear piping
5Left piping
(Drain pipe only)
4Left rear piping
(Drain pipe only)
2Top piping
(Connection pipe only)
3Right
piping
Cut off the piping outlet cutting groove
with a hacksaw, etc.
INDOOR UNIT (TOP VIEW)
••
••
• When there are obstacles at the back, side(s), and top.
Air filter
Intake grille
Tapping screw
INDOOR UNIT
Side cover A (Right side)
Side cover B
(Left side)
Side cover B (Right side)
MAX.
50 m
Diameter
Pipe length
Gas
36 Type 45, 54 Type
15.88 mm (5/8 in.) 19.05 mm (3/4 in.)
Liquid
9.52 mm (3/8 in.)
MIN.
5 m 30 m
Maximum height
(between indoor
and outdoor)
Drilling position for Suspension bolt
Ceiling
Wall
Template
Drilling position for piping
40 mm Ceiling Opening: 1580 mm 40 mm
Ceiling panel
Ceiling Opening: 640 mm
15 mm
Suspension bolt should
extend outward 30 to 50 mm.
INDOOR UNIT
Ceiling panel
CAUTION
In order to check the drainage, be sure to use a level
during installation of the indoor unit. If the installation site
of the indoor unit is not level, water leakage may occur.
5. DRAIN PIPING
CAUTION
The maximum lengths of this product are shown in the following table. If the units are further apart than this, correct operation
can not be guaranteed.
MIN.
1.0
Power supply cord (mm )
Connection cord (mm )
20
Breaker capacity (A)
MAX.
4.0
MIN.
2.5
MAX.
2.5
CAUTION
When the outdoor temperature is 0 °C or less, do not use
the accessory drain pipe and drain cap. If the drain pipe
and drain cap are used, the drain water in the pipe may
freeze in extremely cold weather. (Reverse cycle model
only)
6.35 mm (1/4 in.)
9.52 mm (3/8 in.)
12.70 mm (1/2 in.)
15.88 mm (5/8 in.)
19.05 mm (3/4 in.)
0 to 0.5
Pipe outside diameter
Dimension A (mm)
Flare tool for R410A, clutch type
6.35 mm (1/4 in.)
9.52 mm (3/8 in.)
12.70 mm (1/2 in.)
15.88 mm (5/8 in.)
19.05 mm (3/4 in.)
9.1
13.2
16.6
19.7
24.0
Pipe outside diameter
Dimension B (mm)
0
-0.4
6.35 mm (1/4 in.)
9.52 mm (3/8 in.)
12.70 mm (1/2 in.)
15.88 mm (5/8 in.)
19.05 mm (3/4 in.)
17 mm
22 mm
26 mm
29 mm
36 mm
The pipes are shaped by your hands. 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 difficult to bend or stretch them any more. Do not bend or
stretch the pipes more than three times.
14 to 18 N·m (140 to 180 kgf·cm)
33 to 42 N·m (330 to 420 kgf·cm)
50 to 62 N·m (500 to 620 kgf·cm)
63 to 77 N·m (630 to 770 kgf·cm)
100 to 110 N·m (1000 to 1100 kgf·cm)
••
••
• Always use H07RN-F or equivalent to the connection cord.
••
••
• 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)
••
••
• Install the circuit breaker nearby the units.
22
*
If the space is larger than that is stated, the condition
will be the same as that there are no obstacles.
5. ADDITIONAL CHARGE
Refrigerant suitable for a piping length of 20 m is charged in the outdoor
unit at the factory.
When the piping is longer than 20 m, additional charging is necessary.
For the additional amount, see the table below.
WARNING
1 Before starting work, check that power is not being
supplied to the indoor unit and outdoor unit.
2 Match the terminal board numbers and connection
cord colors with those of the outdoor unit.
Erroneous wiring may cause burning of the electric
parts.
3 Connect the connection cords firmly to the terminal
board. Imperfect installation may cause a fire.
4 Always fasten the outside covering of the connection
cord with the cord clamp. (If the insulator is chafed,
electric leakage may occur.)
5 Always connect the ground wire.
10
PART NO. 9360461094
12
20 to 25 N·m (200 to 250 kgf·cm)
20 to 25 N·m (200 to 250 kgf·cm)
25 to 30 N·m (250 to 300 kgf·cm)
30 to 35 N·m (300 to 350 kgf·cm)
35 to 40 N·m (350 to 400 kgf·cm)
10 to 12 N·m (100 to 120 kgf·cm)
Tightening torque
Lo
Hi
Gauge manifold
Service hose
Vacuum pump
Connecting pipe
Blank cap
Hexagon wrench
3-way valve
Charging port
Cap
CAUTION
1 When moving and installing the air conditioner, do not
mix gas other than the specified refrigerant R410A
inside the refrigerant cycle.
2 When charging the refrigerant R410A, always use
an electronic balance for refrigerant charging (to
measure the refrigerant by weight).
3 When charging the refrigerant,
take into account the slight change
in the composition of the gas and
liquid phases, and always charge
from the liquid phase side whose
composition is stable.
4 Add refrigerant from the charging valve after the
completion of the work.
5 The maximum length of piping is 50 m. If the units are
further apart than this, correct operation can not be
guaranteed.
Gas
Liquid
R410A
7. HEAT INSULATION ON THE PIPE JOINTS
(INDOOR SIDE ONLY)
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.
Secure both ends of the heat insulation material using nylon fasteners.
And finally fix connection pipe (Liquid) to connection pipe (Gas) by rolling
vinyl tape over coupler heat insulation (Gas) and coupler heat insulation
(Liquid).
HOW TO CONNECT WIRING TO THE
TERMINALS
A. For solid core wiring (or F-cable)
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 25 mm to expose the solid wire.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
(3) Using pliers, bend the solid wire to form a loop suitable for the
terminal screw.
(4) Shape the loop wire properly, place it on the terminal board and
tighten securely with the terminal screw using a screwdriver.
B. For strand wiring
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 10 mm to expose the strand wiring.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
(3) Using a round terminal fastener or pliers, securely clamp a round
terminal to each stripped wire end.
(4) Position the round terminal wire, and replace and tighten the
terminal screw using a screwdriver.
A. Solid wire
Strip 25 mm
Insulation
Loop
B. Strand wire
Strip 10 mm
Round
terminal
Wire
Screw with
special washer
Round terminal
Terminal
board
Wire
Screw with
special washer
Round
terminal
Terminal block
6
ELECTRICAL WIRING
Indoor unit
Indoor unit
Indoor unit
Coupler heat insulation (Large)
Connection pipe (Gas)
Connection pipe (Liquid)
Coupler heat insulation (Small)
Nylon fastener (Large)
No gap
Coupler heat
insulation
Nylon fastener (Small)
Connection pipe (Gas)
Connection pipe (Liquid)
Vinyl tape
• When using an auxiliary pipe, make sure that the fastener used is insulated in the same way.
CAUTION
There should be no gaps between the insulation and the
product.
5
POWER
WARNING
1 The rated voltage of this product is 400 V 3ø 50 Hz.
2 Before turning on, verify that the voltage is within the
342 V to 457 V range.
3 Always use a special branch circuit and install a spe-
cial receptacle to supply power to the air conditioner.
4 Use a special branch circuit breaker and receptacle
matched to the capacity of the air conditioner.
(Install in accordance with standard.)
5 Perform wiring work in accordance with standards
so that the air conditioner can be operated safely and
positively.
6 Install a leakage special branch circuit breaker in
accordance with the related laws and regulations
and electric company standards.
CAUTION
1 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
insufficient, change the contracted capacity.
2 When the voltage is low and the air conditioner is
difficult to start, contact the power company the
voltage raised.
3 This air conditioner must be connected to a power
source that has an electrical impedance of 0.16 Ω or
less or has a supply current of 100 A or greater. If the
power supply does not meet the specifications,
contact the power company.
1. CONNECTION DIAGRAMS
3. INDOOR UNIT
Indoor unit
Control box
Tapping screw
(2) Remove the Cover A and install the Connection cord.
(3) Reattach Cover A. Then fasten the control box back into its original
position using the two tapping screws.
Cover A
Control box
(4) After wiring is complete, clamp the Connection cord with the Cord
clamp.
4. OUTDOOR UNIT
CAUTION
When connecting the power supply cord, make sure that
the phase of the power supply matches with the phase of
the terminal board. If the phases do not match, the
compressor will rotate in reverse and will not be able to
compress.
(1) Service cover removal
• Remove the two mounting screws.
• Remove the service cover by pushing downwards.
Direction of the service
cover removal
Service cover
(2) Valve cover removal.
• Remove the one mounting screw.
• Remove the valve cover by sliding upward.
Hook
(4 places)
Valve cover
(3) Connect the power supply cord and the connection cord to terminal.
(4) Fasten the power supply cord and connection cord with cord clamp.
Control box
Terminal
Cord clamp
Power supply cord
Connection cord
(indoor unit and
outdoor unit
connection cord)
R
S
TN123
Connection cordPower supply cord
EARTH
Indoor unit
(5) Power supply cord and connection cord should be fixed with cable
clip as shown in the figure.
Fill in a gap at the entrance of the cords with insulation (seal).
CAUTION
Do not make power supply cord and connection cord come
in contact with valve (Gas).
REMOTE CONTROL UNIT
INSTALLATION
CAUTION
Remote Control Unit
holder fixing
Remote Control
Unit mounting
1 Set
2 Push
Remote
control unit
• Remote control unit settings
(1) Press the START/STOP button and display only the clock.
(2) Press the MASTER CONTROL button continuously for more than five
seconds to display the current signal code.
(3) Change the signal code with the
button ( ).
(4) Press the MASTER CONTROL button again to return to the clock
display and change the signal code.
JM1
JM2
JM3
Indoor unit
Printed circuit board
8
FINISHING
(1) Install the filter guide.
(2) Install the intake grilles.
(3) Install side covers A and B (if the unit is installed in a half-concealed
orientation, only install side cover A).
(4) Install the air filters.
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, air flow adjustment, and other remote control unit
operations.
(2) Air filter removal and cleaning.
(3) Give the operating manual and installation instruction sheet to the
customer.
TEST RUNNING
••
••
• Perform test operation and check items 1 and 2 below.
••
••
• For the operation method, refer to the operating manual.
••
••
• The outdoor unit may not run, depending on the room temperature.
In this case, the ‘TEST RUN’ signal is received during air conditioner
operation (use a metallic object to short the two metal contacts under
the battery compartment lid and send the ‘TEST RUN’ signal from the
remote control unit).
••
••
• To end test operation, press the remote control unit START/STOP
button.
(When the air conditioner is run by pressing the remote control unit
TEST RUN button, the OPERATION and TIMER lamps will simultaneously flash slowly.)
1. INDOOR UNIT
(1) Is operation of each button on the remote control unit normal?
(2) Does each lamp light normally?
(3) Do not air flow direction flap and louvers 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?
11
AN ERROR DISPLAY
1. INDOOR UNIT
Operation can be checked by lighting and flashing of the display section
OPERATION, TIMER and VERTICAL SWING lamps.
Perform judgment in accordance with the following.
FRESH-AIR INTAKE
(1) Open up the knockout hole for the fresh-air intake, as shown in the
figure. (If using half-concealed installation, open up the top knockout
hole instead.)
For half concealed
installation
Indoor unit
CAUTION
1 When removing the cabinet (iron plate), be careful not
to damage the indoor unit internal parts and surrounding area (outer case).
2 When processing the cabinet (iron plate), be careful
not to injure yourself with burrs, etc.
(2) Fasten the round flange (optional) to the fresh-air intake, as shown in
the figure. (If using half-concealed installation, attach to the top.)
[After completing “2 INDOOR UNIT INSTALLATION”...]
(3) Connect the duct to the round flange.
(4) Seal with a band and vinyl tape, etc. so that air does not leak from the
connection.
Round duct (option parts)
Duct
SWING SWING TIMER
OPERATION
MANUAL
AUTO
VERTICAL SWING lamp (Orange)
TIMER lamp (Green)
OPERATION lamp (Red)
• Test running
When the air conditioner is run by pressing the remote control unit test
run button, the OPERATION, TIMER and VERTICAL SWING lamps
flash slowly at the same time.
• Error
The OPERATION, TIMER and VERTICAL SWING lamps operate as
follows according to the error contents.
Indoor EEPROM abnormal
Outdoor EEPROM abnormal
Indoor room temperature sensor
open
Indoor room temperature sensor
shortcircuited
Indoor heat exchanger temperature
sensor open
Indoor heat exchanger temperature
sensor shortcircuited
Float switch operated
Indoor signal abnormal
Outdoor signal abnormal
Indoor fan abnormal
Outdoor power source connection
abnormal
Outdoor heat exchanger
temperature sensor open
Outdoor heat exchanger
temperature sensor shortcircuited
Outdoor temperature sensor open
Outdoor temperature sensor
shortcircuited
Outdoor discharge pipe temperature
sensor or compressor temperature
sensor open
Outdoor discharge pipe temperature
sensor or compressor temperature
sensor shortcircuited
Outdoor high pressure abnormal
Outdoor discharge pipe temperature
or compressor temperature sensor
abnormal
OPERATION
lamp (RED)
(2 times)
(2 times)
(3 times)
(3 times)
(4 times)
(5 times)
(5 times)
(6 times)
TIMER lamp
(GREEN)
(2 times)
(3 times)
(3 times)
(4 times)
(4 times)
(5 times)
(5 times)
(6 times)
(7 times)
SWING lamp
(ORANGE)
: 0.1s ON/0.1s OFF (flash) : OFF
: 0.5s ON/0.5s OFF (flash)
2. OUTDOOR UNIT LEDS
Heat & Cool model (reverse cycle) only
When a malfunction occurs in the outdoor
unit, the LEDs on the circuit board light to indicate the error. Refer to the following table
for the description of each error according to
the LEDs.
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.
Jumper wire
JM3
Connect
Disconnect
Connect
Disconnect
Remote control unit
signal code
A (Primary setting)
B
C
D
LED layout
LED2 LED1
LED1
flash
1 flash
2 flash
3 flash
4 flash
5 flash
6 flash
7 flash
8 flash
9 flash
10 flash
LED2
flash
Lighting
Lighting
Lighting
Lighting
Lighting
Lighting
Lighting
Lighting
Lighting
Lighting
Error contents
Model abnormal or EEPROM abnormal
Power source connection error
Discharge temp. sensor error
Heat exchanger temp. sensor error
Outdoor temp. sensor error
Communication signal error
Indoor unit error
Discharge temp. abnormal
High pressure abnormal
Compressor temp. abnormal
Compressor temp. sensor error
No error. Protect operation Dislighting
3
2
1
2
3
T
N
1
R
S
Power supply
Power
line
Indoor unit
side terminal
Outdoor unit
side terminal
Pipe length
Model type
36,000 BTU/h class
(cooling model)
(Reverse cycle model)
45,000 BTU/h class
(cooling model)
(Reverse cycle model)
54,000 BTU/h class
(cooling model)
(Reverse cycle model)
None
300 g
(10.6 oz)
400 g
(14.1 oz)
600 g
(21.2 oz)
800 g
(28.2 oz)
900 g
(31.8 oz)
1200 g
(42.3 oz)
30 g/m
(1.06 oz/3.3 ft)
40 g/m
(1.41 oz/3.3 ft)
20 m
(66 ft)
30 m
(99 ft)
40 m
(132 ft)
50 m
(164 ft)
g/m
(oz/ft)
Short the two metal contacts
under the battery compartment lid.
Use a 4 mm
hexagon wrench.
6.35 mm (1/4 in.)
9.52 mm (3/8 in.)
12.70 mm (1/2 in.)
15.88 mm (5/8 in.)
19.05 mm (3/4 in.)
CAUTION
CAUTION
1 After connecting the piping, check the all joints for gas
leakage with gas leak detector.
2 When inspecting gas leakage, always use the vacuum
pump for pressure. Do not use nitrogen gas.
2. CONNECTION CORD PREPARATION
Power supply cord
or connection cord
Cable clip
Control box
Connection cord
Terminal board
Earth screw
Cord clamp
To outdoor unit
Connection cord
Connection cord
CAUTION
Use care not to mistake the power supply cord and
connection wires when installing.
(1) Remove the two tapping screws and pull the control box downward.
Error contents
Power supply cord and
connection cord
Cable clip
(2 places)
Insulation
(Seal)
Power supply cord
and connection cord
Gap
Valve (Gas)
(6) Put the service cover and valve cover back after completion of the
work.
Hook
(3 places)
30 mm
40 mm or more
For earth
6. GAS LEAKAGE INSPECTION
None
(5) Attach the connection cord and cable clips. Make sure that they are
positioned so that they will not interfere with opening and closing of
the intake grille or with removal and installation of the air filters.
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