27
Application Information ACK-E-2009
(5) Vacuuming and Charging
The pre-charged outdoor unit does not need any vacuuming or charging. However once it is connected, the
connecting pipe line and the indoor unit need to be vacuumed before releasing the R22/R407C/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).
Filter Dryer
(Mclecular-Sieve Type
Note : R407C- Fix filter dryer
R22 - Nil
R410A - Nil
4. After evacuation, unscrew the spindle (diagram B) for the gas to run to indoor unit.
Caution For R407C / R410A
Do not top-up when servicing leak, as this will reduce the unit performance. Vacuum the unit thoroughly
and then charge the unit with fresh R407C according to the amount recommended in the specifi cation.
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05_Application Information_A.ind27 2705_Application Information_A.ind27 27 4/6/2009 3:32:57 PM4/6/2009 3:32:57 PM
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