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Flaring Work and Connection of Piping
Flaring work
Main cause for gas leakage is due to defect in 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 1.5m longer than the pipe length.
Burrs removal
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.
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)
Flaring work
• Carry out flaring work using flaring tool as shown
below.
• Firmly hold copper pipe in a die in the dimension
shown in the table above.
Outside diameter
mm
Ø6.35
Ø9.52
Ø12.7
Ø15.88
Ø19.05
A
inch
mm
1/4
1.1~1.3
3/8
1.5~1.7
1/2
1.6~1.8
5/8
1.6~1.8
3/4
1.9~2.1
Flaring Work and Connection of Piping
Copper
pipe
90°
Point down
Flare nut
Copper tube
Bar
Bar
Copper pipe
Clamp handle
Slanted Uneven Rough
Pipe
Reamer
Handle
Yoke
Cone
Red arrow mark
Installation Manual 13
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