Refrigerant Oil; Oil Trap And Inverted Trap - Huawei NetCol5000-A050 User Manual

NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual
Temperatur
e (°C)
14
15
16
17
18

4.2.2.2 Refrigerant Oil

The recommended refrigerant oil is MEL32. You can purchase it from Huawei or
purchase it by yourself after being confirmed by Huawei.

4.2.2.3 Oil Trap and Inverted Trap

Table 4-9 Refrigerant pipe components
Item
Liquid pipe
Gas pipe
Thermal
insulation
foam
Oil trap
and
inverted
trap
Issue 13 (2023-08-20)
Saturation
Pressure –
Gauge
Pressure
(MPa)
1.12
1.16
1.19
1.23
1.27
NO TE
Add refrigerant oil only if it leaks. Contact Huawei to confirm the amount of refrigerant oil
to be added.
Specifications
L ≤ 60 m: R410A copper pipe; outer diameter of 5/8 inch (15.88
mm); wall thickness of 1.0 mm; operating pressure > 4.5 MPa
60 m < L ≤ 100 m: R410A copper pipe; outer diameter of 3/4 inch
(19.05 mm); wall thickness of 1.0 mm; operating pressure > 4.5
MPa
R410A copper pipe; outer diameter of 7/8 inch; thickness of 1.2
mm; operating pressure ≥ 4.5 MPa
Thickness: ≥ 9.2 mm
When the outdoor unit is installed at a position higher than the
indoor unit, install an oil trap every five 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
Copyright © Huawei Digital Power Technologies Co., Ltd.
Temperatu Saturation
re (°C) Pressure –
Gauge
Pressure
(MPa)
33 1.94
34 1.99
35 2.04
36 2.1
37 2.15
4 Installation
Temperatu Saturatio
re (°C) n
Pressure –
Gauge
Pressure
(MPa)
52 3.11
53 3.19
54 3.26
55 3.34
– –
65