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Insulating the refrigerant pipe
f Be sure to insulate the refrigerant pipe, joints and connections with class 'o' material .
f
f If you insulate the pipes, the condensed water does not fall from the pipes and the capacity of the Air to Water Heat
f
Pump is improved .
f Check if there are any insulation cracks on the bent pipe .
f
Insulation
Gas side pipe
Liquid side pipe
Brazing the Pipe
f Make sure that there is no moisture inside the pipe .
f
f Make sure that there are no foreign materials and impurities in the pipe .
f
Replacement of Nitrogen gas
1 . Use oxygen free nitrogen gas when brazing the pipes as shown in the picture .
2 . If you do not use Nitrogen gas when brazing the pipes, oxidation may form in the pipe . It can cause the damage of the
compressor and valves .
3 . Adjust the flow rate of the replacement with a pressure regulator to maintain 0 . 0 5 m
4 . Perform brazing of the service valve after protecting the valve .
Brazing part
Nitrogen gas
Pressure regulator
Taping
Clamp
Indoor unit
1/4" copper pipe
Valve stem
ENGLISH-29
Insulation
Indoor unit
Install the insulation to
be overlapped
/h or more .
3
Overlapped
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