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OUTDOOR UNIT
OUTDOOR UNIT INSTALLATION
●
Set the unit on a strong stand, such as one made of concrete blocks to
minimize shock and vibration.
●
Do not set the unit directly on the ground because it will cause trouble.
Connector cover removal
●
Remove the tapping screws.
Installing the connector cover
(1) After inserting the two front hooks, then insert the rear hook.
Hook
(2) Tighten the tapping screws.
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.
AIR PURGE
CAUTION
Always use a vacuum pump to purge the air.
(1) Refrigerant must not be discharged into atmos-
Refrigerant for purging the air is not charged in
phere.
the outdoor unit at the factory.
(2) After connecting the piping , check the joints for
Close the high pressure side valve of the gauge manifold fully and
do not operate it during the following work.
gas leakage with gas leak detector.
1. Check if the piping connections are secure.
10. Fully open the valve stems of the 2-way valve and 3-way valve
2. Check that the stems of 2-way valve and 3-way valve are closed
using a hexagon wrench. (After the valve stem begins to turn,
fully.
turn it with a torque of less than 2.14 ft
•
lbs (30 kgf
stops turning.)
3. Connect the gauge manifold charge hose to the charging port
of the 3-way valve (side with the projection for pushing in the
valve core).
11. Firmly tighten the 2-way valve and 3-way valve blank cap and
the charging port cap.
4. Open the low pressure side valve of the gauge manifold fully.
Gauge manifold
Compound pressure gauge
-0.1 MPa
5. Operate the vacuum pump and start pump down.
2-way valve
3-way valve
(-76 cmHg
Flare nut
-1 bar)
Low pressure
6. Slowly loosen the fl are nut of the 3-way valve and check if air
side valve
enters, then retighten the fl are nut.
(When the fl are nut is loosened the operating sound of the
vacuum pump changes and the reading of the compound
Valve stem
pressure gauge goes from minus to zero.)
Blank cap
Charge hose
Charging port
7. Pump down the system for at least 15 minutes, then check if the
Charging port cap
compound pressure gauge reads -0.1 MPa (-76 cmHg, -1 bar).
8. At the end of pump down, close the low pressure side gauge
Tightening torque
of the gauge manifold fully and stop the vacuum pump.
Blank cap (2-way valve) 14.75 to 18.44 ft
lbs (200 to 250 kgf
•
Blank cap (3-way valve) 22.12 to 25.81 ft
•
lbs (300 to 350 kgf
9. Slowly loosen the valve stem of the 3-way valve. When the
Charging port cap
7.37 to 8.85 ft
•
lbs (100 to 120 kgf
compound pressure gauge reading reaches 0.1-0.2 MPa,
retighten the valve stem and disconnect the charge hose from
the 3-way valve charging port.
(If the stem of the 3-way valve is opened fully before the
charge hose is disconnected, it may be diffi cult to disconnect
the charge hose.)
FINISHING
(1) Insulate between pipes.
Overlap the insulation
● For rear, right, and bottom piping, overlap the connection pipe heat insu-
Connection pipe
lation and indoor unit pipe heat insulation and bind them with vinyl tape
(heat insulation)
so that there is no gap.
● For left and left rear piping, butt the connection pipe heat insulation and
Bind the pipes together so
Vinyl tape
that there is no gap.
indoor unit pipe heat insulation together and bind them with and vinyl
tape so that there is no gap.
● For left and left rear piping, wrap the area which accommodates the rear
piping housing section with cloth tape.
Pipe
● For left and left rear piping, bind the connection cord to the top of the pipe
Wrap with
with vinyl tape.
cloth tape
● For left and left rear piping, bundle the piping and drain hose together by
Cloth tape
Drain hose
wrapping them with cloth tape over the range within which they fi t into
the rear piping housing section.
Left piping
(2) Temporarily fasten the connection cord along the connection pipe with vinyl
Connection cord
tape. (Wrap to about 1/3 the width of the tape from the bottom of the pipe so
that water does not enter.)
(3) Fasten the connection pipe to the outside wall with saddles, etc.
(4) Fill the gap between the outside wall pipe hole and the pipe with sealer
Pipe
Drain hose
so that rain water and wind cannot blow in.
(5) Fasten the drain hose to the outside wall, etc.
For connection from the left rear
Wall pipe
Connection cord
(Outside wall cap)
Connection pipe
(Saddle)
Drain hose
(Sealer putty)
Check the following:
BAD
BAD
GOOD
Drain hose
Saddle
(Outdoors)
Lifted up
Wave
Pipe
Wall
FRONT PANEL REMOVAL AND INSTALLATION
THE INTAKE GRILLE REMOVAL
(1) Open the intake grille.
Intake grille
(2) Pull down the knob.
Mounting shaft
(3) Lift the intake grille upward, until the axle at the top of the
intake grille is removed.
Bearing
Front panel
THE INTAKE GRILLE INSTALLATION
(1) The fi xing axle of the intake grille is installed on the Panel.
(2) Lay down the intake grille.
Screws (6 position)
THE FRONT PANEL REMOVAL
(1) Remove intake grille (Reference the intake grille removal.)
(2) Remove six screws.
(3) The thumb is hung on the lower part as shown in the fi gure,
Front panel
and it pulls to the front, pushing [-] mark , and bottom hooks
Push
Wall hook bracket
(two position) is removed from wall hook bracket.
[-] mark
(4) The front panel is pulled to the front, raising the upper surface,
Push
and a front panel is removed.
Top holes (two sides)
THE FRONT PANEL INSTALLATION
(1) Firstly, fi t the lower part of the front panel, and insert top and
Top hook (center)
Top hole (center)
bottom hooks. (Three top sides)
(2) Six screws is attached.
(3) The intake grille is attached.
Top hooks
Indoor unit
(two sides)
CAUTION
Install the front panel and INTAKE GRILLE securely. If installation is imperfect, the front panel or INTAKE GRILLE
may fall off and cause injury.
ELECTRICAL WIRING (OUTDOOR UNIT)
1. Remove the screws, then remove the control box cover.
2. Fasten the Inter unit wire harness and power supply to the conduit holder using the lock nut.
3. Connect inter-unit wire harness and power supply to the terminal.
Refer to the wiring diagram
4. Use the screws to install the control box cover.
WARNING
NOTE:
• Connector trade size for this unit is 1/2" (12.7 mm). The connector
Be sure to comply with local codes while running
can be bought at a hardware store. Refer to "How to connect wiring
the wire from the indoor unit to the outdoor unit
to the terminals" for instructions on connecting depending on the
Tapping screw
(size of wire and wiring method, etc. ).
wire type you are using.
Hooks
• The fuse located in the outdoor unit provides power supply protec-
Every wire must be connected fi rmly.
tion and may blow when power is applied if the system has been
Connector cover
incorrectly wired.
No wire should be allowed to touch refrigerant
tubing, the compressor or any moving part.
Loose wiring may cause the terminal to overheat
or result in unit malfunction. A fi re hazard may
also exist. Therefore, be sure all wiring is tightly
connected.
Connect wires to the matching numbers of
terminals.
Lock nut
•
cm) until it
Indoor unit
Outdoor unit
Terminal
Terminal
Grounding line
Control line
Pressure gauge
DISCONNECT
SWITCH
(Inter Unit)
LO
HI
(FIELD SUPPLY)
Power line
High
pressure
side valve
(closed)
Charge
hose
Indoor unit
Outdoor unit
terminal block
terminal block
Vacuum pump
4
1
2
3
1
2
3
L1 L2
Earth screw
Disconnect switch
cm)
•
•
cm)
G
•
cm)
Power supply line
TEST RUNNING
● Perform test operation and check items 1 and 2 below.
● For the test operation method, refer to the operating manual.
● The outdoor unit, may not operate, depending on the room temperature. In this case, press the test run button on the remote control unit
Indoor unit pipe
while the air conditioner is running, (Point the transmitter section of the remote control unit toward the air conditioner and press the test
(heat insullation)
run button with the tip of a ball-point pen, etc.)
● To end test operation, press the remote control unit START/STOP button.
(When the air conditioner is run by pressing the test run button, the OPERATION indicator lamp and TIMER indicator lamp will simultane-
ously fl ash slowly.)
1. INDOOR UNIT
(1) Is operation of each button on the remote control unit normal?
Transmitter section
(2) Does each lamp light normally?
(3) Do the air fl ow-direction louver operate normally?
(4) Is the drain normal?
2. OUTDOOR UNIT
(1) Is there any abnormal noise and vibration during operation?
(2) Will noise, wind, or drain water from the unit disturb the neighbors?
Test run button
(3) Is there any gas leakage?
POWER
WARNING
(1) The rated voltage of this product is 208/230 V AC
(1) The power source capacity must be the sum of
60 Hz.
the air conditioner current and the current of other
electrical appliances. When the current contracted
(2) Before turning on the power, check if the voltage
capacity is insuffi cient, change the contracted
BAD
is within the 208 V -10% to 230 V +10% range.
capacity.
(3) Always use a special branch circuit and install a
(2) When the voltage is low and the air conditioner is
special receptacle to supply power to the room air
diffi cult to start, contact the power company the
conditioner.
End in water
voltage raised.
(4) Use a circuit breaker and receptacle matched to
the capacity of the air conditioner.
(5) Do not extend the power cord.
CUSTOMER GUIDANCE
(6) Perform wiring work in accordance with standards
Explain the following to the customer in accordance with the operat-
so that the air conditioner can be operated safely
ing manual:
and positively.
(1) Starting and stopping method, operation switching, temperature
Intake grille
adjustment, timer, air fl ow switching, and other remote control unit
(7) Install a leakage circuit breaker in accordance
operations.
with the related laws and regulations and electric
(2) Air fi lter removal and cleaning, and how to use the air louvers.
Knob
company standards.
(3) Give the operating and installation manuals to the customer.
Front panel
REMOTE CONTROL UNIT INSTALLATION
CAUTION
(1) Check that the indoor unit correctly receives the
signal from the remote control unit, then install
the remote control unit holder.
(2) Select the remote control unit holder selection
site by paying careful attention to the following:
Avoid places in direct sunlight.
Remote control unit
Select a place that will not be affected by the heat
holder fi xing
Front panel
from a stove, etc.
Remote control
1. REMOTE CONTROL UNIT HOLDER INSTALLATION
unit holder
•
Install the remote control unit with a distance of 23 ft
(7 m) between the remote control unit and the photo-
cell as the criteria. However, when installing the remote
control unit, check that it operates positively.
Tapping
•
Install the remote control unit holder to a wall, pillar,
screw
(small)
etc. with the tapping screw.
PUMP DOWN OPERATION (FORCED COOLING OPERATION)
To avoid discharging refrigerant into the atmosphere at the time of relocation or disposal, recover refrigerant by doing the cooling operation or forced cooling
operation according to the following procedure. (When the cooling operation cannot start in winter, and so on, start the forced cooling operation.)
(1) Do the air purging of the charge hose by connecting the charging hose of gauge manifold to the charging port of 3 way valve and opening
the low-pressure valve slightly.
(2) Close the valve stem of 2 way valve completely.
(3) Start the cooling operation or following forced cooling operation.
When using the remote control unit
Press the TEST RUN button after starting the cooling operation by the remote control unit.
The operation indicator lamp and timer indicator lamp will begin to fl ash simultaneously during test run.
When using the MANUAL AUTO button of the indoor unit (The remote control unit is lost, and so on.)
Keep on pressing the MANUAL AUTO button of the indoor unit for more than 10 seconds.
(The forced cooling operation cannot start if the MANUAL AUTO button is not kept on pressing for more than 10 seconds.)
(4) Close the valve stem of 3 way valve when the reading on the compound pressure gage becomes 0.05~0 MPa (0.5~0 kg/cm
(5) Stop the operation.
• Press the START/STOP button of the remote control unit to stop the operation.
• Press the MANUAL AUTO button when stopping the operation from indoor unit side.
(It is not necessary to press on keeping for more than 10 seconds.)
During the pump-down operation, make sure that the compressor is turned off before you remove the refrigerant piping.
Do not remove the connection pipe while the compressor is in operation with 2 way or 3 way valve open. This may cause abnormal pres-
sure in the refrigeration cycle that leads to breakage and even injury.
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 248 °F. (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 insula-
tion 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 68 °F).
Control box cover
Inter-unit wire
harness
Power supply
Inter-unit wire
hamess
Earth screw
G
CAUTION
Remote control
unit mounting
1 Set
2 Push
Remote con-
trol unit
2
).
CAUTION
CAUTION
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