DC Inverter Multi VRF System User Manual
15
4.5 Disassembly of Compressor Feet
In order to prevent unit from damage during transportation, 2 metal pieces are fitted to outdoor
unit’s compressor feet before unit leaves factory. See fig.20.
Fasten the nut after removal
Metal pieces
Metal pieces
Binding nut
Compressor
Fig.20
When installing the unit, metal pieces for transportation must be removed. Then fasten the
binding nuts again and wrap back soundproofing cotton.
Note: If unit runs with metal pieces fitting on, compressor will shake abnormally and unit’s
operating life will be shortened.
4.6 Vacuum Pumping, Refrigerant Adding
4.6.1 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.
Manometer
Gas valve
Liquid valve
LO knob
Connection hose
HI knob
Manometer
Vacuum pump
Fig.21
4.6.2 Refrigerant Adding
1) Refrigerant quantity of outdoor unit before delivery:
Mode
CHV-5S120NK
CHV-5S140NK
CHV
-160WL/A -T
Refrigerant Qty (kg)
5.0
5.0
5.0
