(3) Flaring work and connection
of piping
1) Flaring work
Main cause for gas leakage is due to defect in flaring
work. Carry out correct flaring work in the following pro-
cedure.
1. Cut the pipes and the cable.
■ Use the piping kit accessory or the pipes purchased
locally.
■ Measure the distance between the indoor and the out-
door unit.
■ Cut the pipes a little longer than measured distance.
■ Cut the cable 1.5m(4.9ft) longer than the pipe length.
2. 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.
3. 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)
4. 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.
5. 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.
- 26 -
To Next Page
Loading...
