Trane 4TXK6512G1000AA Service Manual page 135

Precautions for refrigerant piping
 Do not twist or crush piping .
 Be sure that no dust is mixed in piping .
 Bend piping with as wide angle as possible .
 Keep insulating both gas and liquid piping .
 Check flare-connected area for gas leakage .
Piping connection method
 Apply refrigerant oil to the joint and the flange .
 To bend a pipe, give the roundness as possible not to crush the pipe .
 When connecting pipe, hold the pipe centre to centre and then screw nut on by hand, refer to Fig .
 Be careful not to let foreign matters, such as sands enter the pipe .
Pipe diameter
Liquid pipe Φ6.35mm
Liquid pipe Φ9.52mm
Gas pipe Φ12.7mm
Gas pipe Φ15.88mm
Gas pipe Φ19.05mm
 Field pipes can be installed in four directions (A, B, C D, E) .
Spanner
J o i n t
N u t
Spanner
109
Fastening torque (N.m)
14.2-17.2
32.7-39.9
49.5-60.3
61.8-75.4
97.2-118.6