Result
After the copper pipes of the low-temperature component are connected (the stop
valve of the indoor unit should be open), inject nitrogen through the upstream
and downstream needle valves of the expansion valve to 3.5 MPa and preserve the
pressure for 24 hours. The system pressure should stay constant under unchanging
ambient temperature conditions. If there is a considerable temperature change
and the pressure changes, perform the test again. After the air tightness test is
performed, exhaust nitrogen.
● Do not use compressed air because water and impurities in the air aect the
system operation.
● Do not use oxygen or acetylene for a leakage test.
4.2.4.9 Connecting Water Pipes
Context
The water pipes to be connected onsite is the condensate drainpipe, which can be
routed from the top or bottom as required.
Figure 4-30 Holes in the smart cooling product
(1) Gas pipe stop valve
(2) Liquid pipe stop valve (3) Drainage hole
Top Piping
Step 1 Connect the drainpipe, as shown in Figure 4-31.
FusionModule500 Smart Mini Data Center
User Manual 4 Installation Guide
Issue 02 (2020-12-25) Copyright © Huawei Technologies Co., Ltd. 90
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