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Application Information AWM-G-2009
VACUUMING AND CHARGING
The precharged outdoor unit does not need any vacuuming or charging. However once it is connected,
theconnecting pipe line and the indoor need to be vacuumed before releasing the R22/R407C/R410A from
theoutdoor unit.
1) Open the service port core cap.
2) Connect pressure gauge to the service port.
3) Connect the line to vacuum pump. Open the charging manifold valve and turn the pump on. Vacuum
to–0.1 MPa (-760mmHg) or lower. (Evacuation time varies by the pump but averagely in 1 hour).
Note : R407C – Fix fi lter dryer
R22 - Nil
R410A - Nil
4) After evacuation, unscrew the spindle (diagram B) for the gas to run to indoor unit.
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