FusionModule800 Smart Small Data Center
Installation Guide (Six Fans)
Copyright © Huawei Technologies Co., Ltd.
After routing water pipes, secure them to the pipe assembly using cable ties, and seal the
cable hole using firestop putty.
----End
3.7.8 Leakage Test with Nitrogen
Context
The leakage test with nitrogen described in this section is dedicated for testing the leaks of
the indoor unit and the pipes connected to it.
The measuring range of the pressure gauge must be greater than or equal to 4.0 MPa, and
the tolerance range of the leather hose must be greater than or equal to 4.5 MPa.
During the pressure preservation process, do not remove the leather hose and pressure
gauge; otherwise, nitrogen may leak.
Procedure
Step 1 Open the stop valves for the gas pipe and liquid pipe of the indoor unit.
Before opening the indoor unit stop valves, ensure that the stop valves for the gas pipe and
liquid pipe of the outdoor unit are closed.
Step 2 Connect the pressure gauge, leather hose, and nitrogen cylinder. A reducing valve must be
installed on the head of the nitrogen cylinder, as shown in Figure 3-76. The outlet pressure of
the reducing valve must not exceed 3.0 MPa.
If the outlet pressure of the reducing valve is greater than 3.0 MPa, components may be
damaged.
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