Air Evacuation
Note on Adding Refrigerant
Some systems require additional charging depending on pipe lengths. The standard pipe length varies
according to local regulations.
The standard pipe length is 5m. The refrigerant should be charged from the service port on the outdoor
port unit’s low pressure valve. The additional refrigerant to be charged can be calculated using the following
formula:
CAUTION
DO NOT
mix refrigerant types.
ADDITIONAL REFRIGERANT (R32) PER PIPE LENGTH
Connective Pipe
Length (m)
Air Purging
Method
Additional Refrigerant
< Standard pipe length Vacuum Pump
N/A
> Standard pipe lengh Vacuum Pump
Liquid Side: Ø 6.35 (1/4")
(Pipe length – standard length) x 12g/m
Liquid Side: Ø 9.52 (3/8")
(Pipe length – standard length) x 24g/m
97
Summary of Contents for FW12 Series
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Page 53: ...Control remoto Funci n Silence 53...
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