10
Table 5 Moments of Torque for Tightening Screws
Diameter
Wall Thickness
（
mm
）
Moment of Torque
Ф6.35mm
≥
0.5
15-30(N·m)
Ф9.52mm
≥
0.71
30-40(N·m)
Ф12.7mm
≥
1
45-50(N·m)
Ф15.9mm
≥
1
60-65(N·m)
CAUTION!
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.
CAUTION!
For the Multi system air conditioner unit, each pipe should
be labeled to tell which
system it belongs to avoid mistaken inaccurate piping.
(5) 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 condensation and water leakage.
2) The joints of the indoor unit should be wrapped with the insulating material
and no gap is allowed on the joint of the indoor unit, as shown in Fig.8.
Fig. 8
CAUTION!
After the pipe is protected well enough, never bend it to form a small angle,
otherwise it would crack or break.
(6) Wrap the Pipe with Tape
1) Bundle the refrigerant pipe and electric wire together with tape, and separate
them from the drain pipe to prevent the condensate water overflowing.
2) Wrap the pipe from the bottom of the outdoor unit to the top of the pipe where
