9
Samsung Electronics
2-4 Installation Diagram of Indoor Unit and Outdoor Unit
2-4-1 Air-Purge Procedure
1) Connect each assembly pipe to the appropriate
valve on the outdoor unit and tighten the flare nut.
3) Open the valve of the low pressure side of
manifold gauge counter-clockwise.
4) Purge the air from the system using vacuum
pump for about 30 minutes.
- After that, please recheck that pressure is
stabilization.
- Close the valve of the low pressure side of
manifold gauge clockwise.
- Remove the hose of the low pressure side
of manifold gauge.
7) Check for gas leakage.
- At this time, especially check for gas
leakage from the 3-Way valve’s stem nuts,
and from the service port cap.
2) Connect the charging hose of low pressure side
of manifold gauge to the packed valve having a
service port (3/8" Packed valve) as shown at the
figure.
5) Set valve cork of both liquid side and gas side of
packed valve to the open position.
6) Mount the valve stem nuts to the 2-Way and
3-Way valve. And mount the service port cap to
3-Way valve.
A
B
C
D
Outdoor unit
Indoor unit
Gas pipe side
Liquid pipe side
B
(liquid)
A
(gas)
Valve stem
Stem cap
Vacuum Pump
Summary of Contents for US18WJWB
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