Vacuum Pumping, Refrigerant Adding - Gree GMV-Y60WL/A-T Owner's Manual

When installing the unit, metal pieces for transportation must be removed. Then fasten the
binding nuts again and wrap back soundproofing cotton.If unit runs with metal pieces fitting on,
compressor will shake abnormally and unit's operating life will be shortened.

4.5 Vacuum Pumping, Refrigerant Adding

Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is no extra
refrigerant in the outdoor unit for air purging!
4.5.1 Vacuum Pumping
(1) Outdoor unit has been charged with refrigerant before delivery. Field-installed connection
pipe needs to be charged with additional refrigerant.
(2) Confirm whether outdoor liquid and gas valves are closed.
(3) Use vacuum pump to withdraw the air inside indoor unit and connection pipe from the
outdoor valve, as shown below.
4.5.2 Refrigerant Adding
(1) Refrigerant quantity of outdoor unit before delivery:
Model
Refrigerant Qty (kg/oz)
Fig. 4.4
Fig. 4.5.1
GMV-Y36WL/A-T(U)
3.3
(116)
13
GMV-Y48WL/A-T(U)
3.3
(116)
Photovoltaic Multi VRF
GMV-Y60WL/A-T(U)
3.3
(116)