Daikin VRV-WIII RWEYQ72PTJU Service Manual page 131

SiUS30-1301
3.7.4 Setting of Refrigerant Additional Charging Operation
When additional refrigerant is not charged all with condensing unit in stop mode, operate the condensing unit and charge
the liquid refrigerant from the service port of liquid stop valve. The additional charging operation is activated by Branch
Selector button switch on the condensing unit PCB.
Additional refrigerant charge total flow
Confirm discharge, suction and
liquid stop valves closed.
STEP 1
Additional
Turn OFF the power.
charge
without
compressor
operation
Charge through service port of
liquid stop valve.
Is all refrigerant charged?
Open discharge & suction
Liquid side stop valve:
STEP 2
1. Fully open the liquid side stop valve.
2. After 10 minutes, fully close liquid line stop
valve and then, open the valve by turning
Additional
180º.
charge
(∗)
with
compressor
operation
Start additional refrigerant charge mode.
(Setting Mode 2 : Refer to operation procedure
detail on next page.)
Is all refrigerant charged?
Note:

The stop valve operations are different from Heat Pump and Heat Recovery connection, refer to following page for detail.
Field Setting
YES
NO
gas stop valve.
YES
NO
Stop refrigerant charge.
Field Setting from Condensing Unit
Open discharge gas, liquid,
suction gas
stop valve.
Disconnect charge hose.
End of charge method.
Open liquid stop valve.
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