21
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 Torque (kgf•cm)
6.35 mm (1/4") 145~175
9.52 mm (3/8") 333~407
12.70 mm (1/2") 505~615
15.88 mm (5/8") 630~769
19.05 mm (3/4") 990~1210
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.
Refrigerant oil
Torque wrench
Flare nut
Union
Spanner
Drain hose connection port
Liquid refrigerant port
Gas refrigerant
port
A
The designs and shape are subject to change
according to the model.
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