Installation manual

8
4-2. GAS CHARGE
Perform gas charge to unit.
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conditioner for cooling.
Note:
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CAUTION:
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will be locked.
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ABC
D
Union
Stop valve
Liquid pipe
Union
Union
Union
Indoor
unit
Stop valve with
service port
Gas pipe
Refrigerant gas
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operating valve
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Gauge manifold
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for R410A with siphon
Electronic scale for
refrigerant charging
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Outdoor unit
0;=$1$
Service port cap
(Torque 13.7 to
17.7 N•m, 140 to
180 kgf
•cm, 10 to
13
IWOE
4-1. PURGING PROCEDURES AND LEAK TEST
Stop valve
for GAS
Stop valve cap
(Torque 19.6 to 29.4 N•m,
200 to 300 kgf•cm, 15 to
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Gauge manifold
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Compound pressure
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–0.101MPa
[–760 mmHg
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Handle
Low
Handle High
Vacuum pump
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Charge hose
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*Close
*Open
Hexagonal wrench
*4 to 5 turns
Stop valve
for LIQUID
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
Pressure gauge
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Precautions when using
the control valve
When attaching the control valve to
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form or loosen if excess pressure is
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Service port
Charge hose
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%RG\
Close
Open
Control
valve
A
When attaching the control valve to
the service port, make sure that the
valve core is in closed position, and
then tighten part A. Do not tighten
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core is in open position.
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gas pipe. (The stop valve will not work in its initial state fresh out of the
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stop valve on the gas pipe side of the outdoor unit.
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fold valve, and stop the vacuum pump.
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stop valves on both sides of gas pipe and liquid pipe. Operating with
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fect performance of the air conditioner.
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