5. Maintenance
This system uses R32 refrigerant. It is strictly forbidden to charge any refrigerant other than R32
into the system.
There must be no air in the refrigerant circulation, because air will cause abnormal high pressure, which
will damage the gas piping and lower heating or cooling efficiency.
Refrigerant charge can only be done in cooling operation. Please proceed as followings:
4)
5)
6)
Note:
Always use a weight scale to measure the gas amount charged into the unit.
1114
Needle valve
Pressure gauge
R32
Needle valve
Check with
leakage detector
or soap water if
there is any
leakage.
