2.2.2 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 1.5(4.92) m(ft) longer than the pipe length.
2) 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 of burrs into the
tubing.
3) Putting nut on
① 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)
4) Flaring work
① Carry out flaring work using flaring tool as shown below.
② Firmly hold copper pipe in a die in the dimension shown in the
table below.
5) Check after flaring
① Compare the flared work with figure on right side.
② If flare is found to be defective, cut off the flared section and do
flaring work again.
Outer diameter A
mm inch mm inch
Ø6.35 1/4 1.1~1.3 0.04~0.05
Ø9.52 3/8 1.5~1.7 0.06~0.07
Ø12.7 1/2 1.6~1.8 0.06~0.07
Ø15.88 5/8 1.6~1.8 0.06~0.07
Ø19.05 3/4 1.9~2.1 0.07~0.08
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