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1. Connect the charging hose of low pressure side of
manifold gauge to the packed valve having a service
port (3/4" Packed valve) as shown at the figure.
2. Open the valve of the low pressure side of manifold
gauge counter-clockwise.
3. Purge the air from the system using vacuum pump for
about 10 minutes.
- Close the valve of the low pressure side of manifold
gauge clockwise.
- Remove the hose of the low pressure side of manifold
gauge.
4. Set valve cork of both liquid side and gas side of
packed valve to the open position.
5. Mount the valve stem nuts to the 3-way valve.
• And mount the service port cap to 3-way valve.
6. 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.
INSTALLATION METHOD / AIR PURGE
AIR PURGE
AIR PURGE
◆ Be sure to perform the air purge of the indoor unit, and piping using the refrigerant of the outdoor unit at
the time of installation.
A
B
C
D
B
(liquid)
Outdoor unit
Indoor unit
Gas pipe side
Liquid pipe side
Stem cap
Valve stem
A
(gas)
Vacuum
pump
E-
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