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4. Put a flare nut slightly into the pipe and modify the flare.
Pipe
Flare
5. Check if you flared the pipe correctly (see examples of incorrectly flared pipes below).
Correct
6. Align the pipes to connect them easily. Tighten the flare nuts first with your hands, and then with a torque wrench,
applying the following torque:
Indoor outlet pipe
• E xcessive torque can be cause of gas leakage. If extending pipe by welding/brazing please ensure nitrogen is
used during welding/brazing process. The joint must be accessible and serviceable.
7. For further details on how to connect to the outdoor unit and evacuate the air, refer to page 42~43.
• T ighten the flare nut with torque wrench according to specified method.
If the flare nut is over-tightened, the flare may break and cause refrigerant gas leakage.
Midea ODM Latin America IB&IM_HP_EN.indd 39
Outer Diameter (D)
90°± 2°
B
R 0.4~0.8
Damaged
Inclined
Surface
Flare nut
Connecting pipe
English-39
Depth (A)
ø6.35 mm
1.3 mm
ø9.52 mm
1.8 mm
ø12.70 mm
2.0 mm
ø15.88 mm
2.2 mm
Uneven
Cracked
Thickness
Outer Diameter
N•m
ø6.35 mm
14~18
ø9.52 mm
34~42
ø12.70 mm
49~61
ø15.88 mm
68~82
Flaring Size (B)
8.7 - 9.1 mm
12.8 - 13.2 mm
16.2 - 16.6 mm
19.3 - 19.7 mm
Torque
kgf•cm
140~180
350~430
500~620
690~830
2014/6/11 11:42:42
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