Huawei NetCol8000-A013 User Manual page 58

NetCol8000-A013 In-room Air Cooled Smart Cooling
Product
User Manual (600 mm Width)
● 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.
● Take protective measures, such as spreading a piece of wet cloth, around the
welding position, to avoid burning the bottom panel, top panel, side panel,
internal components, other pipes, thermal insulation foam, power cables, and
labels.
● During and after the welding, avoid exposing the refrigerant pipes for over 15
minutes because this will influence 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.
Procedure
Step 1 Weld the refrigerant pipes in the middle.
Exercise caution during welding to avoid burning components, such as rubber
rings, inside the cabinet.
During the welding, fill a little nitrogen into the pipes to avoid internal oxidation.
Figure 3-22 Welding pipes
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Issue 04 (2022-11-25)
NO TICE
NO TICE
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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