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Be careful that matters, such as wastes of sands, etc. shall not enter
the pipe.
The standard pipe length is 5 m, if it is over 7 m, the function of the
unit will be affected. If the pipe has to be lengthened, the refriger-
ant should be charged according to 20 g/m. But the charge of refrig-
erant must be conducted by professional air conditioner engineer.
Before adding additional refrigerant, perform air purging from the
refrigerant pipes and indoor unit using a vacuum pump, then
charge additional refrigerant.
• Maximum elevation: (A) max = 10 m
• In case the elevation (A) is more than 5 m, oil trap should be in-
stalled every 5 to 7 m
• Maximum length: (B) max = 15 m
• In case the pipe length B is more than 7 m, the refrigerant should
be charged, according to 20 g/m.
Indoor Unit
Outdoor Unit
A
B
Indoor
Unit
Outdoor Unit
Oil Trap
B
A
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