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Connecting the Refrigerant Pipe
There are two refrigerant pipes of differing diameters:
A smaller one for the liquid refrigerant
A larger one for the gas refrigerant
The inside of copper pipe must be clean & has no dust.
The connection procedure for the refrigerant pipes varies according to the exit
position of the pipes from the indoor unit, as seen when facing the indoor in the "A"
side.
Liquid refrigerant port
Gas refrigerant port
Drain hose port
1
Remove the pinch pipe on the pipes and connect the assembly pipes to each
pipe, tightening the nuts, first manually and then with a torque wrench,
a spanner applying the following torque.
Outer Diameter
1/4inch(6.35mm)
3/8inch(9.52mm)
1/2inch(12.70mm)
5/8inch(15.88mm)
Note
Must apply refrigerant oil on the flaring area to prevent a leak.
2
Be sure that there must be no crack or kink on the bended area.
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Torque
10.46~12.63 ft•lb(145~175 kgf•cm)
24.02~29.36 ft•lb(333~407 kgf•cm)
36.43~44.37 ft•lb(505~615 kgf•cm)
45.45~55.48 ft•lb(630~769 kgf•cm)
Refrigerant oil
Torque wrench
Spanner
Flare nut
Union
Drain hose port
Gas refrigerant port
Liquid refrigerant port
The designs and shape are subject to change
according to the model.
A
13
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2009-8-31 10:27:16
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