Purging The Unit; Connecting The Refrigerant Pipe - Samsung AM FNFDEH Series Installation Manual

Purging the Unit

On delivery, the indoor unit is loaded with inert gas.
All this gas must therefore be purged before connecting the assembly piping.
To purge the inert gas, proceed as follows.
Unscrew the pinch pipe at the end of each refrigerant pipe.
Result: All inert gas escapes from the indoor unit.
Note To prevent dirt or foreign objects from getting into the pipes
during installation, do NOT remove the pinch pipe completely until
you are ready to connect the piping.

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
(mm)
6.35
9.52
12.7
15.88
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.
NASA_Floor Stand_AM@@@FNFDEH@_IM_EN_03678A-05.indd 7
Torque
kgf•cm N•m
140~180
14~18
350~430
34~42
500~620 49~61
690~830 68~82
Gas
refrigerant
port
Liquid
refrigerant
port
 The designs and shape are subject to change
according to the model.
A

The designs and shape are subject to change
according to the model.
Refrigerant oil
Torque wrench
Spanner
Flare nut
Union
7
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2016-05-09 오후 5:32:30