11
Connecting the refrigerant pipe
There are two refrigerant pipes of diering 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
Refrigerant oil
Torque wrench
Flare nut
Union
Spanner
1. Remove the pinch pipe on the pipes and connect the assembly pipes
to each pipe, tightening the nuts, rst manually and then with a torque
wrench, a spanner applying the following torque.
Outer Diameter (mm)
Torque
kgf•cm N•m
6.35 140~180 14~18
9.52 350~430 34~42
12.70 500~620 49~61
15.88 690~830 68~82
NOTE
• Must apply refrigerant oil on the aring area to prevent a
leak.
The designs and shape are subject to change
according to the model.
A
2. Be sure that there must be no crack or kink on the bended area.
NASA_Big Duct_AM@@@FNHDEH@_IM_03864A-05_EN.indd 11 2016-04-01 오후 5:29:41
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