11
ENGLISH
3.3.1
Flaring work
Main cause for refrigerant leakage is due
to defect in the flaring work.
Carry out correct flaring work using the
following procedure:
1.
Cut the pipes and the cable.
• Use the piping kit accessory or pipes
purchased locally.
• Measure the distance between the
indoor and the outdoor unit.
• Cut the pipes a little longer than the
measured distance.
• Cut the cable 1.5m longer than the pipe
length.
Fig.3.3.1-1
2.
Burr removal
• Completely remove all burrs from the
cut cross section of pipe/tube.
• 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.3.3.1-2
3.
Put nut on
•
Remove flare nuts attached to indoor
and outdoor unit, then put them on
pipe/tube after completed burr removal.
(It is not possible to put them on after
flaring work.)
Fig.3.3.1-3
4.
Flaring work
•
Carry out flaring work using flaring tool
as shown below.
Fig.3.3.1-4
• Firmly hold copper pipe according
to the dimension shown in the table
below.
Outer diam. (mm)
A (mm)
Max.
Min.
Ф6.35 (1/4”)
1.3
0.7
Ф9.52 (3/8”)
1.6
1.0
Ф12.70 (1/2”)
1.8
1.0
Ф15.88 (5/8”)
2.4
2.2
Pipe
Pipe
Reamer
Flare Nut
Copper Tube
Bar
Copper
Pipe
Yoke
Handle
Bar
Cone
Red arrow
mark
Clamp Handle
"A"
Face Down
Oblique
Burr
Roughness
