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3-3. PIPE CONNECTION
Indoor unit connection
tion, and tighten using two wrenches. Excessive tightening
Outdoor unit connection
Connect pipes to stop valve pipe joint of the outdoor unit in
the same manner applied for indoor unit.
• For tightening, use a torque wrench or spanner and use
the same tightening torque applied for indoor unit.
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
4-1. PURGING PROCEDURES AND LEAK TEST
cap on.)
2) Connect gauge manifold valve and vacuum pump to service port of stop valve on
the gas pipe side of the outdoor unit.
*4 to 5 turns
Stop valve cap
(Torque 19.6 to
*Close
Service port cap
(Torque 13.7 to
140 to
•cm)
Precautions when using the control valve When attaching the control valve
Service port
A
Control valve
Charge hose
Close
stop the vacuum pump.
5. PUMPING DOWN
5-1. PUMPING DOWN
1) Connect the gauge manifold valve to the service port of the stop valve on the gas
pipe side of the outdoor unit.
2
).
To start the
operation
6) Stop the
Compound pressure gauge
–
0.101 MPa
–
(
Pressure gauge
Stop valve
Charge hose
Stop valve for
Adapter for pre-
pump with the function to
deform or loosen if excess pressure
When attaching the control valve to
valve core is in closed position, and
then tighten part A. Do not tighten
core is in open position.
2
).
.
When installing the unit, securely connect the refrigerant pipes before starting
the compressor.
3-4. INSULATION AND TAPING
1) Cover piping joints with pipe cover.
-
prevent condensation.
4-2. TEST RUN
Make sure the following is done.
• Indoor and outdoor units are installed
and twice for
operation. Test
the left lamp of the operation indicator
indoor/outdoor unit connecting wire (A)
for mis-wiring. After the test run, emer-
start.
operating instructions for details.
Checking the remote (infrared) signal reception
will not operate for 3 minutes to protect the air conditioner.
4-3. AUTO RESTART FUNCTION
details.)
Caution:
To the user
-
4-4. EXPLANATION TO THE USER
put the remote controller in the remote controller holder, how to clean, precautions for
operation, etc.)
When pumping down the refrigerant, stop the compressor before disconnecting
the refrigerant pipes. The compressor may burst if air etc. get into it.
WARNING
,
operation switch
WARNING
-
-
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