Vacuuming And Charging
• The precharged outdoor unit does not need any vacuuming or charging. However once it is connected,
the connecting pipe line and the indoor need to be vacuumed before releasing the R22/R410A from
the outdoor 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).
4) After evacuation, unscrew the spindle (diagram 2) for the gas to run to indoor unit.
Note : R22: Nil
R410A: Nil
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