Connecting The Refrigerant Pipe - Samsung Cassette Type Series Installation Manual

Connecting the refrigerant pipe

There are two refrigerant pipes of different 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.
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
6.35 mm (1/4")
9.52 mm (3/8")
12.70 mm (1/2")
15.88 mm (5/8")
19.05 mm (3/4")
Note If the pipes must be shortened refer to page 10.
2
Must use insulator which is thick enough to cover the refrigerant tube to
protect the condensate water on the outside of pipe falling onto the floor
and the efficiency of the unit will be better.
3
Cut off any excess foam insulation.
4 Be sure that there must be no crack or wave on the bended area.
5
It would be necessary to double the insulation thickness(10mm or more)
to prevent condensation even on the insulator when if the installed area is
warm and humid.
6
Do not use joints or extensions for the pipes that connect the indoor and
outdoor unit. The only permitted connections are those for which the units
are designed.
CAUTION
Connect the indoor and outdoor units using pipes with flared

connections(not supplied). For the lines, use insulated, unwelded,
degreased and deoxidized copper pipe,(Cu DHP type to ISO 1337),
suitable for operating pressures of at least 4200kPa and for a burst
pressure of at least 20700kPa. Copper pipe for hydro-sanitary
applications is completely unsuitable.
For sizing and limits (height difference, line length, max. bends,

refrigerant charge, etc.) see the outdoor unit installation manual.
All refrigerant connection must be accessible, in order to permit either

unit maintenance or removing it completely.
Torque (N•m)
18
42
55
65
100
Refrigerant oil
Torque wrench
Flare nut
Insulation
Clamp
refrigerant pipe
Insulation
refrigerant pipe
Gas
refrigerant
pipe
Liquid refrigerant pipe
Spanner
Union
9
E-