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Refrigerant piping work
Tightening flare connection part
f Check that the flaring is properly made.
X
f Align the center of the piping and sufficiently tighten the flare nut with fingers. Then, tighten the flare nut with torque
X
wrench until the wrench clicks. When tightening the flare nut with torque wrench, ensure the direction for tightening
follows the arrow on the wrench.
f Make sure to use ester oil to coat the flare connection part.
X
Pipe
Flare connection
Flare nut
part
• Blowing nitrogen gas should be done when brazing the pipe.
• Make sure to use the provided flare nut
CAUTION
• Make sure that there are no cracks when bending the pipe.
• Do not fasten the flare nut with excessive strength.
Pipe bending
1. Perform bending of the pipe using the bender which has a specified
bending radius.
2. Be sure to take full care to perform bending of the pipe successfully at
one time. Bending and unbending the pipe more than twice makes the
bending work increasingly difficult.
3. You may use the spring inserted into the gas pipe instead of the bender
to bend the pipe.
4. When you bend the pipe using the spring, hold the pipe with both hands
to prevent any distortion, and secure a minimum bending radius over
100mm.
Connecting the drain hose
f Connect the drain hose by inserting the extension drain hose to the drain connection port tightly.
X
f Insulated the extension drain hose, then fix it with a cable tie or a tape.
X
Piping material
Insulation
38
PAC_아프리카 중동향AP80S0A_IBIM_34514A-02_EN.indd 38
Outer diameter
Connection
(mm)
torque(kgf•cm)
ø 6.35
145~175
ø 9.52
333~407
ø 12.70
505~615
ø 15.88
630~769
Vinyl chloride (inner diameter of Ø16mm)
Foamed polyethylene
Flare dimension
Flare shape (mm)
(mm)
8.70~9.10
12.80~13.20
16.20~16.60
19.30~19.70
Spring
Drain pan
Insulation
Cable
tie
2015-04-23 오후 2:18:58
R 0.4~0.8
Drain hose
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