42
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 2.9 Shortening or extending the refrigerant
pipes (assembly pipe)
on page
42
.
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 48
.
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 2.9 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
(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
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
DB68-06039A-00.indd 42
5/25/2016 7:08:54 PM
