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3. Remove the front cover (see Fig. 9).
a. Lift the front cover's bottom 30 degrees.
b. Lift the front cover's top.
Fig. 9 - Remove the front cover
Interconnecting Piping
Flare Connection
1. Cut the pipe with a pipe cutter at 90 degrees.
90
Fig. 10 - Cut the pipe
2. Remove all the burrs from the cut cross section of the pipe
avoiding any burrs inside the tubes.
3. Remove the flare nuts attached to the indoor and outdoor
units.
4. Insert a flare nut into a pipe and flare the pipe. Refer to
Table 3 for specifications.
Table 3—Specifications
OUTER DIAM. IN. (MM)
Ø1/4" (6.35)
0.05 (1.3)
Ø3/8" (9.52)
0.06 (1.6)
Ø1/2" (12.7)
0.07 (1.8)
Bar
Copper pipe
Clamp handle
Fig. 11 - Clamp Handle
5. Apply a small amount of refrigerant oil to the flare
connection on the tubing.
A150708
Lean
crude
burr
A150709
IN.(MM)
MAX.
MIN.
0.03 (0.7)
0.04 (1.0)
0.04 (1.0)
Handle
Bar
Yoke
Cone
Red arrow mark
A150710
6. Align the center of the pipes.
Indoor unit tubing
Fig. 12 - Align the pipe center
7. Connect both liquid and gas pipings to the indoor unit.
8. Tighten the flare nut using a Torque wrench as specified in
the Table 4.
Table 4—Tightening
PIPE DIAMETER
INCH (mm)
Ø1/4" (6.35)
Ø3/8" (9.52)
Ø1/2" (12.7)
Ø5/8" (15.88)
Fig. 13 - Tighten
Fig. 14 - Flare nut and copper tube
ELECTRICAL CONNECTIONS
1. Remove the installation bearer of the sensing device (see
Fig. 15).
Fig. 15 - Remove installation bearer
2. Remove the Electrical Cover.
3. Connect wiring from the outdoor unit per the connection
diagram Fig xx.
4. Reinstall the Electrical Cover and sensing device bearer.
8
Flare nut
Pipings
A150711
TIGHTENING TORQUE
Ft-lb
N - m
10 to 13
13.6 to 17.6
24 to 31
32.5 to 42.0
37 to 46
50.1 to 62.3
50 to 60
67.7 to 81.3
A150712
Installation bearer
of sensing device
A150713
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