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Fig.48
5.4
Refrigerant pipe connection
5.4.1
Flaring work
Main cause for refrigerant leakage is due to
defect in the flaring work. Carry out correct
flaring work using the following procedure:
Cut the pipes and the cable.
1.
Use the piping kit accessory or pipes
purchased locally.
2.
Measure the distance between the
indoor and the outdoor unit.
3.
Cut the pipes a little longer than the
measured distance.
4.
Cut the cable 1.5m longer than the
pipe length.
Fig.49
Cut the pipes and the cable
1.
Completely remove all burrs from the
cut cross section of pipe/tube.
2.
Put the end of the copper tube/
pipe in a downward direction as
you remove burrs in order to avoid
dropping burrs into the tubing.
Fig.50
Putting nut on
Remove flare nuts attached to indoor
and outdoor unit, then put them on pipe/
tube having completed burr removal. (not
possible to put them on after flaring work)
Fig.51
Flaring work
Firmly hold copper pipe in a die in the
dimension shown in the table below.
Fig.52
Outer diam.
(mm)
A(mm)
Max.
Min.
ø
6.35
1.3
0.7
ø
9.52
1.6
1.0
ø
12.7
1.8
1.0
Seal
Drain joint
Base pan
hole of
outdoor unit
Seal
Drain
pipe
(1)
(1)
(2)
90°
Oblique Roughness Burr
Point down
Ramer
Pipe
Flare nut
Copper tube
Handle
Yoke
Cone
Red arrow mark
Clamp handle
Copper hipe
Rar
Bar
Summary of Contents for EXC09JEIWI
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