Huawei FusionModule800 Installation Manual page 93

FusionModule800 Smart Small Data Center
Installation Guide (Six Fans)
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3.
Ensure that you tighten the nut to the specified torque. The failure torque for the nut of the
liquid pipe stop valve is 70 N•m and that for the nut of the gas pipe stop valve is 100 N•m.
The torque greater than the failure torque will damage the screw thread.
Table 3-4 Torque requirements
Item Pipe Nut
Nut Size
Liquid pipe
27#
stop valve
Gas pipe stop 36#
valve
Issue 10 (2019-12-20)
Tighten the liquid pipe stop valve using a 27# torque wrench to a torque of 35-37 N•m.
Tighten the gas pipe stop valve using a 36# torque wrench to a torque of 50-52 N•m.
When tightening a stop valve using a torque wrench, secure the hex nut of the active
connector at the welded copper pipe to prevent the copper pipe from turning and further
deforming as the stop valve is being tightened.
Figure 3-62 Connecting indoor unit stop valves
Tighten the pipe nut, needle valve nut, and rear cover nut based on the torque listed in
Table 3-4.
Tightening
Torque
(N•m)
35-37
50-52
Copyright © Huawei Technologies Co., Ltd.
Needle Valve Nut
Nut Size Tightening
Torque
(N•m)
17# 10
17# 10
3 Hardware Installation
Rear Cover Nut
Nut Size Tightening
Torque
(N•m)
19# 15-17
30# 20-22
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