Connecting The Refrigerant Pipe - Samsung AM007FNTDCH Installation Manual

Connecting the refrigerant pipe

Connect indoor and outdoor units with field-supplied copper pipes by
means of flare connections. Use insulated seamless refrigeration grade
pipe only, (Cu DHP type according to ISO1337), degreased and deoxidized,
suitable for operating pressures of at least 4200 kPa and for burst pressure
of at least 20700 kPa. Under no circumstances must sanitary type copper
pipe be used.
There are 2 refrigerant pipes of different diameters:
The smaller one is for the liquid refrigerant
The larger one is for the gas refrigerant
A short pipe is already fitted to the air conditioner. You may need to
extend the pipe using the assembly pipe. (optional)
The connection procedure for the refrigerant pipe varies according to the
exit position of the pipe when facing the wall:
Right(A)
Left(B)
Underside(C)
Rear
1
Cut out the appropriate knock-out piece on the rear of the indoor unit
unless you connect the pipe directly from the rear.
2 Smooth the cut edges.
3 Remove the protection caps of the pipes and connect the assembly pipe
to each pipe. Tighten the nuts first with your hands, and then with a torque
wrench, applying the following torque:
Outer Diameter
6.35 mm
9.52 mm
12.70 mm
15.88 mm
If you want to shorten or extend pipes, refer to page 10.
4 Cut off the remaining foam insulation.
5 If necessary, bend the pipe to fit along the bottom of the indoor unit.
Then pull it out through the appropriate hole.
The pipe should not project from the rear of the indoor unit.
The bending radius should be 100 mm or more.
6 Pass the pipe through the hole in the wall.
7 For further details on how to connect to the outdoor unit and purge the air,
refer to page 8.
The pipe will be insulated and fixed permanently into position after
finishing the installation and the gas leak test; refer to page 17 for
further details.
DO NOT WALL UP THE PIPE CONNECTION !
All refrigerant pipe connection must be easy accessible and serviceable.
Torque
140~180 14~18
350~430 34~42
500~620 49~61
690~830 68~82
A
C
Refrigerant oil
Torque wrench
Flare nut
Union
B
Spanner
9