You are advised to select the pipes based on the total length of the pipes
connecting the indoor unit and the outdoor unit, because dierent pipe diameters
inuence the pressure drop and performance of the cooling system. For details,
see Table 3-11.
Table 3-11 Recommended pipe specications
Pipe Length (m) Recommended Diameter
for Gas Pipes (inch)
Recommended
Diameter for Liquid
Pipes (inch)
L ≤ 80 3/4 5/8
Note: If the pipe is longer than 80 m, contact Huawei technical support.
Connect refrigerant pipes based on Figure 3-32.
● If the direction of a refrigerant pipe changes, add a support at the position
500 mm before and after the changing point respectively.
● If a refrigerant pipe is straight, add a support every 1500 mm.
Site personnel should prepare the required materials and install the supports. For detailed
requirements on the pipe support, see Figure 3-2.
Figure 3-32 Installing a refrigerant pipe
Procedure
Step 1 Remove the plugs from the pipes using a welding torch, as shown in Figure 3-33.
NetCol5000-A025 In-row Air Cooled Smart Cooling
Product
User Manual (300 mm Width) 3 Installation Guide
Issue 15 (2020-12-10) Copyright © Huawei Technologies Co., Ltd. 62
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