York YKFE12BXEXBH-RX Installation And Owner's Manual page 16

Preparation of piping
1.
1) Cut the pipes and the cable
□ Use the accessory piping kit or the pipes purchased
locally, conforming to refrigeration grade.
□ Measure the distance between the indoor and the
outdoor unit.
□ Cut the pipes a little longer than measured distance.
□ Cut the cable 1.5m longer than the pipe length.
2) Remove burrs
□ Remove burrs from cut edges of pipes.
□ Turn the pipe end down to avoid the metal powder
entering the pipe.
Caution:
If burrs are not removed, they may cause a gas leakage.
3) Flaring the pipes
□ Insert the flare nuts, mounted on the connection ports
of both indoor and outdoor unit, onto the copper pipes.
Some refrigerant gas may leak, when the flare nuts are
removed from the indoor unit, as some gas is charged
to prevent the inside of the pipe from rusting.
□ Fit the copper pipe end into the Bar of flare tool about
0~0.5mm higher. (See illustration)
□ Flare the pipe ends.
4) Tape the flaring part to protect it from
dust or damages.
Pipe cutter
Fig. 9
Pipe
Point down
Fig. 10
0~0.5mm
Bar Bar
Copper pipe
Clamp handle
Fig. 11
= Improper flaring =
Inclined Surface Cracked
damage
Fig. 12
Slanted Rough
Reamer
Handle
Yoke
Cone
Red arrow mark
Uneven
thickness
13