Connection Of Refrigerant Pipe - Gree GWHD(48S)NM3DO Owner's Manual

Super Free Match Series
④ The following table for the torque required to tighten the nuts.
Table 5
Thickness of
Pipe diameter
copper tube
Φ6.35 mm ≥0.8 mm
Φ9.52 mm ≥0.8 mm
Φ12.7 mm ≥0.8 mm
Φ15.9 mm ≥1.0 mm
Φ19.05 mm ≥1.0 mm
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Caution!
 During the connection of the indoor unit and BU module to the refrigerant pipe, never pull any
joints of the indoor unit and the BU module by force; otherwise the capillary pipe or other pipe
may crack, which then would result in leakage.
 The refrigerant pipe should be supported by brackets, that is, don't let the unit withstand the
weight of it.
 For the Super Free Match system, each pipe should be labeled to tell which system it belongs to
avoid mistaken inaccurate piping.
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6.5

Connection of Refrigerant Pipe

Tightening
torque
15～30 N· m
35～40 N· m
45～50 N· m
60～65 N· m
70～75 N· m
12
Fig. 14