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INSTALLATION
18
Flaring Work
Main cause for gas leakage is due to defect of
flaring work. Carry out correct flaring work in
the following procedure.
Cut the pipes and the cable
1
Use the piping kit accessory or the pipes
purchased locally.
2
Measure the distance between the indoor
and the outdoor unit.
3
Cut the pipes a little longer than measured
distance.
4
Cut the cable 1.5 m longer than the pipe
length.
Copper
90°
pipe
CAUTION
!
(for R32)
• When mechanical connectors are
reused indoors, sealing parts shall be
renewed.
• When flared joints are reused indoors,
the flare part shall be re-fabricated.
Slanted Uneven Rough
Burrs removal
1
Completely remove all burrs from the cut
cross section of pipe/tube.
2
While removing burrs put the end of the
copper tube/pipe in a downward direction
while removing burrs location is also
changed in order to avoid dropping burrs
into the tubing.
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 finishing
flare work)
Flare nut
Copper tube
Flaring work
1
Firmly hold copper pipe in a bar with the
dimension shown in below table table
below.
2
Carry out flaring work with the flaring tool.
Pipe diameter
inch (mm)
Wing nut type
Ø 1/4 (Ø 6.35) 0.04~0.05 (1.1~1.3)
Ø 3/8 (Ø 9.52) 0.06~0.07 (1.5~1.7)
Ø 1/2 (Ø 12.7) 0.06~0.07 (1.6~1.8)
Ø 5/8 (Ø 15.88) 0.06~0.07 (1.6~1.8)
Ø 3/4 (Ø19.05) 0.07~0.08 (1.9~2.1)
A inch (mm)
Clutch type
0~0.02
(0~0.5)
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