30
Additional Charge
•
The refrigerant charge has already charged into the outdoor unit. For the piping length of 7.6m and below,
additional refrigerant charge after vacuuming is not necessary.
•
When the piping length is more than 7.6m, please use the table below (unit in gram).
The additional refrigerant charge amount recommended is a guideline for longer piping application. The actual
charge required may be different from the guideline due to different application and variation in site conditions.
MODEL
MVF030AR
MVF040AR
MVF050AR
MLC030CR
MLC040CR
MLC050CR
10m
100
100
100
15m
290
290
290
20m
490
490
490
35m
1090
1090
1090
Overall Checking
•
Ensure the following, in particular:
1.
The unit is mounted solidly and rigid in position.
2.
Piping and connections are leak proof after charging.
3.
Proper wiring has been done.
•
Drainage check – pour some water into drain pan.
•
Test run
1.
Conduct a test run after water drainage test and gas leakage test.
2.
Watch out for the following:
(a) Is the electric plug firmly inserted into the socket?
(b) Is there any abnormal sound from the unit?
(c) Is there any abnormal vibration with regard to the unit itself or piping?
(d) Is there smooth drainage of water?
•
Check that:
1. Outdoor fan is running, with warm air blowing off the outdoor unit (cooling cycle).
2. Indoor blower is running and discharge cool air (cooling cycle).
3. Suction (low side) pressure is as per recommendations.
4. The remote controller has incorporated a 3 minutes delay in the circuit. Thus, it requires about 3
minutes before the outdoor unit can start up.
Standard Operating Condition
Heatpump Unit
Ts : Dry bulb temperature
Th : Wet bulb temperature
