by johnson controls
10
Installation Instructions
7
Fig. 6
Table 5
：
Moments of Torque for Tightening Screws
Diameter
Wall Thickness
（
mm
）
Moment of Torque
φ6.35mm
≥
0.5
15-30
(
N·m)
φ9.52mm
≥
0.71
30-40(N·m)
φ12.7mm
≥
1
45-50(N·m)
φ15.9mm
≥
1
60-65(N·m)
CUATION
！
① .
During the connection of the indoor unit and the refrigerant pipe, never pull any joints of the indoor
unit by force; otherwise the capillary pipe or other pipe may crack, which then would result in leakage.
② .
The refrigerant pipe should be supported by brackets, that is, don’t let the unit withstand the weight of
it.
CUATION
！
For the GMV multi VRF system, each pipe should be labeled to tell which system it belongs to avoid
mistaken inaccurate piping.
e. Installation of the Protection Layer of the Refrigerant Pipe
1) The refrigerant pipe should be insulated by the insulating material and plastic tape in order to prevent
condensing and leaking.
2) The joints of the indoor unit should be wrapped with the insulating material and no gas is allowed on
the joint of the indoor unit, as shown in Fig.7.
No gap
Fig.7
CUATION
！
After the pipe is protected well enough, never bend it to form a small angle; otherwise it would crack or
break.
f. Wrapping the pipe with tape
Pipe
Flare Nut
Pipe
Torque Wrench
Ordinary
Summary of Contents for ERJC 36
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