Gate-Controller; Charging And Discharging Of Refrigerant - Gree GRS-CQ4.0Pd/NhG-K El Manual Del Propietario

Air-to-water Heat Pump
switch on (outdoor)temperature and control logic(1/2).

14. Gate-controller

If there is gate control function, installation guide follow as:

15. Charging and Discharging of Refrigerant

The unit has been charged with refrigerant before delivery. Overcharging or undercharging will cause the
compressor to run improperly or be damaged. When refrigerant is required to be charged or discharged for
installation, maintenance and other reasons, please follow steps below and nominal charged volume on the
nameplate.
Discharging: remove metal sheets of the outer casing, connect a hose to the charging valve and then discharge
refrigerant.
Charging
valve 1
Notes
(a) Discharge is allowed unless the unit has been stopped. (Cut off the power and repower it 1 minutes later)
(b) Protective measures should be taken during discharging to avoid frost bites.
(c) When discharging is finished, if vacuuming cannot be done immediately, remove the hose to avoid air or
foreign matters entering the unit.
(d) Vacuuming: when discharging is finished, use hoses to connect the charging valve, manometer and
vacuum pump to vacuum the unit.
220-240VAC
30
MONOBLOC TYPE
Charging
valve 2