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 unit's low
pressure valve. The additional refrigerant to be charged can be calculated using the following formula:
R32 :
CAUTION
DO NOT
φ6.35(1/4")
(Total pipe length -
standard pipe length)x
12g/m
mix refrigerant types.
86
Liquid Side Diameter
φ9.52(3/8")
(Total pipe length -
standard pipe length)x
24g/m
φ12.7(1/2")
(Total pipe length -
standard pipe length)x
40g/m