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6
Connection of piping
-Indoor
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.
■
Use the piping kit accessory or the pipes
purchased locally.
■
Measure the distance between the indoor
and the outdoor unit.
■
Cut the pipes a little longer than measured
distance.
■
Cut the cable 1.5m(59.1in) longer than the
pipe length.
Burrs 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.
A
B
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)
C
Copper
pipe
90¡
Slanted Uneven Rough
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Pipe
Reamer
Point down
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.
D
Check
■
Compare the flared work with figure below.
■
If flare is noted to be defective, cut off the flared
section and do flaring work again.
E
Outside diameter A
mm
mm
inch
1/4
3/8
1/2
5/8
ø6.35
ø9.52
ø12.7
ø15.88
0~0.5
0~0.5
0~0.5
0~1.0
Flare nut
Copper tube
Right side panel
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Remove the 2 screws of right side panel
A