Samsung AR NVFH Series, User'S Manual & Installation Manual

Page: 35 / 46

35 English
Ins
tallation
1 Cut out the appropriate knock-out piece (A, B, C)
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 (mm) Torque (N•m) Torque (kgf•cm)
ø 6.35 14 to 18 140 to 180
ø 9.52 34 to 42 350 to 430
ø 12.70 49 to 61 500 to 620
ø 15.88 68 to 82 690 to 830
NOTE
• If you want to shorten or extend the pipes,
see Step 2.7 Shortening or extending the
refrigerant pipes (assembly pipe) on page
35.
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.
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 41.
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.
Step 2.7 Shortening or extending the
refrigerant pipes (assembly pipe)
Pipe cutter
Pipe
90° Oblique Rough Burr
R 0.4 to 0.8
90°±2°
45°±2°
L
D
D
A
Flare Pipe
Connecting pipe
Flare nut
Indoor outlet pipe
Outer diameter (mm) Torque (N•m) Torque (kgf•cm)
ø 6.35 14 to 18 140 to 180
ø 9.52 34 to 42 350 to 430
ø 12.70 49 to 61 500 to 620
ø 15.88 68 to 82 690 to 830
(Unit: mm)
Outer diameter (D) Depth (A) Flare dimension (L)
ø 6.35 1.3 8.7 to 9.1
ø 9.52 1.8 12.8 to 13.2
ø 12.70 2.0 16.2 to 16.6
ø 15.88 2.2 19.3 to 19.7