PIPING INSTALLATION
Indoor Unit Pipe Connections (con’t)
6. Tighten both flare nuts using a standard wrench and a torque wrench as shown below.
7. Carefully tighten flare nuts to correct torque level referring to the Torque Table below.
8. Individually insulate each bare refrigerant pipe and joint as shown below to prevent sweating.
Over tightening may damage flare connections and cause leaks.
CAUTION
90
90
Holding spanner
Torque wrench
Floor Console Indoor Unit
Outdoor Unit Pipe Connections
Carefully bend and adjust length of refrigerant pipes to meet
outdoor unit port connections. See installation instructions
shipped with the outdoor unit for further instructions..
Insulate
pipe
Insulate
pipe
Pipe
insulation
Liquid pipe
Gas pipe
Reference A:
Cover this portion
with insulation
11
Pipe Diameter
Nut Size
Tightening Torque
inch (mm)
inch (mm)
ft-lbs
N-m
1/4 (6)
1/4 (17)
11-22
15-30
3/8 (9.5)
3/8 (22)
26-29
35-40
1/2 (12.7)
1/2 (25)
33-37
45-50
