NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
Copyright © Huawei Technologies Co., Ltd.
The thickness of heat insulation cottons should not be less than 13 mm.
When purchasing water pipes, ensure that the water pipe with thermal insulation foam
warped can go through the ports on the bottom and top boards.
3.9.1 Connecting Refrigerant Pipes
Context
Refrigerant pipes can be routed from the top or the bottom. Select a routing mode based on
the actual situation.
When connecting the indoor unit to the outdoor unit, you are advised to weld pipes for the
outdoor unit first. If the pipes have been exposed for over 15 minutes, seal the pipes to
prevent dust and water from entering them.
During the welding process, avoid burning the bottom panel, top panel, side panels, other
pipes, thermal insulation foam, cables, and labels. Take preventive measures properly, for
example, lay wet cloth around the welding position.
During or after welding, avoid exposing the refrigerant pipes for over 15 minutes.
Otherwise, system reliability is affected.
To avoid leakage of ventilation channels and damage to copper pipes, seal the holes after
the pipes are routed. Seal the terminals of the copper pipes to prevent foreign matter from
entering the refrigerant pipes.
If the welded copper pipes are excessively long or with bends, clean the foreign matter
inside the pipes with nitrogen.
The refrigerant pipes should be wrapped with thermal insulation foam.
To minimize the noise due to vibration, perform the following operations. Figure 3-24 shows
the two cases.
When the direction of the refrigerant pipe is changed, add a support (as described in
3.1.2.5 Pipe Support) at the position that is 500 mm away from the changing point.
When the refrigerant pipe is straight, add a support every 1500 mm.
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