NetCol8000-A013 In-room Air Cooled Smart Cooling
Product
User Manual (800 mm Width)
3 Installation Guide
Issue 05 (2019-12-20)
Copyright © Huawei Technologies Co., Ltd.
57
Figure 3-39
Cable routes
(1) Ports for indoor and
outdoor units signal
cables
(2) Ports for teamwork
and monitoring cables
(3) Ports for
indoor unit
power cable
(4) Ports for
outdoor unit
power cable
3.12 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.