Gate-Controller; Charging And Discharging Of Refrigerant - Gree Versati III GRS-CQ8.0Pd/NhH-M Owner's Manual

SPLIT TYPE

14. Gate-controller

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

15. Charging and Discharging of Refrigerant

(1) Before shipped out from manufacturer, the outdoor unit has been filled with refrigerant. Additional refrigerant
may be filled when carrying out site connection of pipelines.
(2) Check the liquid valve and the gas valve of the outdoor unit. The valves shall be completely shut off.
(3) Connect a vacuum pump to the liquid valve and the gas valve of the outdoor unit to remove air from the
inside of the indoor unit and the connecting pipe. Refer to the following figure:
(4) After confirming that there is no leakage from the system, when the compressor is not in operation, charge
additional R32 working fluid with specified amount to the unit through the filling opening of the liquid pipe
valve of the outdoor unit.
Be sure to charge the specified amount of refrigerant in liquid state to the liquid pipe. Since this
•
refrigerant is a mixed refrigerant, adding it in gas form may cause the refrigerant composition to change,
preventing normal operation.
Before charging, check whether the refrigerant cylinder is equipped with a siphon tube or not.
•
With siphon tube
• When charging is interrupted or finished, reinspect the unit but do not let the compressor run into operation.
• Do not use mixture of refrigerant vapor and air or oxygen for pressurizing for fear of explosion.
Pressure meter
"Lo"knob
Liquid valve
Gas valve
Air-to-water Heat Pump Split Versati
XT3
220VAC
Pressure meter
"HI"knob
Vacuum pump
Connection pipe
WARNING
NOTE
29
No siphon tube