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39
Note: Over tightening may damage connections. Carefully tighten union nuts
to correct torque level referring to the Torque Table below.
4. Connect the Refrigerant Pipe to Outdoor Unit
● Remove the screw cap of the valve and aim the pipe joint at the bellmouth of pipe.
Pipe Diameter Nut Size
1/4 (6)
3/8 (9.5)
1/2 (12.7)
5/8 (16)
Torque Table
Tightening Torque
inch (mm)inch (mm) ft-lbs N-m
1/4 (17)
3/8 (22)
1/2 (25)
5/8 (29)
12 to 14
23 to 29
34 to 40
45 to 47
15 to 20
30 to 40
45 to 55
60 to 65
refrigerant
pipes
gas valve
pipe joint
union nut
liquid
valve
● Align both ends of the refrigerant piping and start to twist on the union nut by hand.
● Use a standard wrench on the pipe joint and an open-end torque wrench on the
union nut to apply the proper torque as shown in the torque table below.
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