Step 2.9 Shortening Or Extending The Refrigerant Pipes (Assembly Pipe) - Samsung AR NXPD Series Installation Manual

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 (mm) Torque (N•m)
ø 6.35
ø 9.52
ø 12.70
ø 15.88
NOTE
• If you want to shorten or extend the pipes,
see Step 2.9 Shortening or extending the
refrigerant pipes (assembly pipe) on page 17.
• Tighten the nuts to the specified torques. If
overtightened, the nuts could be broken so
refrigerant may leak.
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 Fix the indoor unit on the wall.Pass the cables,
pipes and hose through the knock-out hole which
would be connected to the outdoor unit .
8 Use 2 screws to fix the indoor unit as shown in the
picture 2.
9 Assemble the Guide into the position of A or B as
shown in the picture 3.
NOTE
• The pipe will be insulated and fixed permanently
into position after finishing the installation and
the gas leak test. For further details. see Step 4.1
Performing the gas leak tests on page 25.
CAUTION
• Tighten the flare nut with a torque wrench
according to specified method. If the flare nut is
over-tightened, the flare may break and cause
refrigerant gas leakage.
• Do not box in or cover the pipe connection.
All refrigerant pipe connection must be easily
accessible and serviceable.
Torque (kgf•cm)
14 to 18 140 to 180
34 to 42 350 to 430
49 to 61 500 to 620
68 to 82 690 to 830
Step 2.9 Shortening or extending the
refrigerant pipes (assembly pipe)
Oblique
90°
D
A
Pipe Flare
Outer diameter (D) Depth (A)
ø 6.35
ø 9.52
ø 12.70
ø 15.88
Indoor outlet pipe
Outer diameter (mm) Torque (N•m)
ø 6.35 14 to 18
ø 9.52 34 to 42
ø 12.70 49 to 61
ø 15.88 68 to 82
Pipe cutter
Pipe
Rough
Burr
90°±2°
45°±2°
L
R 0.4 to 0.8
D
(Unit: mm)
Flare dimension (L)
1.3 8.7 to 9.1
1.8 12.8 to 13.2
2.0 16.2 to 16.6
2.2 19.3 to 19.7
Flare nut
Connecting pipe
Torque (kgf•cm)
140 to 180
350 to 430
500 to 620
690 to 830
English 17