– 60 m < L ≤ 100 m: R410A copper pipe; outer diameter of 1 inch (25.4
mm); wall thickness of 1.2 mm; operating pressure > 4.5 MPa
● Thermal insulation foam: thickness ≥ 13 mm
● Oil trap and inverted trap: Install an oil trap every
ve to six meters in the
vertical direction along the gas pipe and an inverted trap for the inlet and
outlet of the outdoor unit to ensure system reliability.
Figure 4-22 Specications for oil traps and inverted traps (unit: mm)
Table 4-2 Specications for oil traps and inverted traps
No.
Name Outer Diameter
and Thickness
(mm)
Technical Requirements
1 Oil trap 22.2x1.2 Inner diameter at the expanded
end of the copper pipe: 22.4 mm;
outer diameter at the shrunk end:
19.5 mm
2 Oil trap 25.4x1.2 Inner diameter at the expanded
end of the copper pipe: 25.8 mm;
outer diameter at the shrunk end:
22.6 mm
3 Inverted trap of
gas pipes
22.2x1.2 Inner diameters at the two
expanded ends of the copper pipe:
22.6 mm
4 Inverted trap of
gas pipes
25.4x1.2 Inner diameters at the two
expanded ends of the copper pipe:
25.8 mm
NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual 4 System Installation
Issue 05 (2020-10-10) Copyright © Huawei Technologies Co., Ltd. 69
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