CAUTION
1. During the connection of the indoor unit and the refrigerant pipe, never pull any parts of
the indoor unit forcefully: otherwise the refrigerant pipes or other pipes may crack, which
would then result in leakage.
2. The refrigerant piping should be supported by brackets. Unsupported piping will put stress
on the indoor unit and could lead to leaking or breakage.
Install refrigeration lines matching the indoor unit refrigeration tubing diameters. Tube adapters
are supplied with the outdoor unit in order to complete the connection at the outdoor unit.
17
Floor and Ceiling Unit
Back-up Wrench
Pipe Diameter in. (mm)
Tightening Torque
1/4 (6.35)
11.25-14.75 ft-lbf / 15 ~ 20 N•m
3/8 (9.52)
22.25-29.50 ft-lbf / 30 ~ 40 N•m
1/2 (12.7)
33.25-40.50 ft-lbf / 45 ~ 55 N•m
5/8 (15.9)
44.25-47.75 ft-lbf / 60 ~ 65 N•m