Huawei NetCol8000-A013 User Manual page 51

NetCol8000-A013 In-room Air Cooled Smart Cooling
Product
User Manual (800 mm Width)
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Procedure
Step 1 Weld pipes in the medium segment by referring to
Exercise caution during welding to avoid burning components, such as rubber rings, inside the
cabinet.
During the welding, charge a little nitrogen into the pipes to avoid internal oxidation, as
shown in
Figure 3-22 Welding pipes
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Issue 05 (2019-12-20)
When connecting the indoor and outdoor units, seal the pipe if the welding break exceeds
15 minutes to prevent dust and water from entering the pipe.
To avoid burning the bottom panel, top panel, side panel, internal components, other pipes,
thermal insulation foam, power cables, and labels, take protective measures, such as
spreading a piece of wet cloth, around the welding position.
During and after the welding, avoid exposing the refrigerant pipe for over 15 minutes
because this may influence the system reliability.
Take appropriate sealing and protective measures when routing welded pipes through
holes to prevent air channel leaks and copper pipe damage. Otherwise, other components
may be damaged by impurities.
Avoid elbows and ensure that the connection between the indoor and outdoor units is the
shortest.
The refrigerant pipes should be wrapped with thermal insulation foam.
Figure 3-22.
When the direction of the refrigerant pipe is changed, add a support at the position that is
500 mm away from the changing point.
If the refrigerant pipe is straight, add a support every 1500 mm.
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3 Installation Guide
Figure 3-23.
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