CAUTION
Be sure to apply the pipe against the port on the indoor unit correctly. If the centering is improper the flare nut will not be
tightened smoothly. If the flare nut is forced to turn, threads will be damaged.
When the flare nut is tightened properly by your hand, use a torque wrench to finally tighten it.
Model
Liquid
Suction
Pipe size
Tightening torque
Pipe size
Tightening torque
7,000-12,000 Btu/h
1/4"(6.4mm)
6-10 ft-lb.(8-13N.m)
1/2"(12.7mm)
15-25 ft-Ib(20-33N.m)
18,000-36,000 Btu/h
3/8"(9.5mm)
12-20 ft-lb.(16-27N.m)
5/8"(15.9mm)
20-30 ft-lb.(27-40N.m)
48,000-60,000 Btu/h
1/2"(12.7mm)
15-25 ft-lb.(20-33N.m)
3/4"(19.0mm)
30-35 ft-lb.(40-47N.m)
Do not remove the cap from the connection pipe before connecting the pipe
CAUTION
Be sure to connect the large pipe after connecting the small pipe completely
(2) Outdoor unit side
Tighten the flare nut of the connection pipe at the outdoor unit valve connector. The tightening method is the same as
indoor side
