Optional) Refrigerant R410A - Huawei NetCol8000-E220 User Manual

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
●
●

3.2.1 (Optional) Refrigerant R410A

Do not use low-quality refrigerant. Huawei is not responsible for any damage
caused by low-quality refrigerant.
Follow these suggestions to choose high-quality refrigerant:
1.
2.
Figure 3-3 Checking refrigerant
Table 3-1 Mapping between temperatures and R410A saturation pressure
Tempe
rature
(°C)
0
1
2
3
Issue 06 (2020-08-19)
Optional: This material can be purchased from Huawei or prepared by
customers.
Engineering purchase: This material will not be delivered by Huawei, and
customers need to purchase it.
CA UTION
Contact the refrigerant producer to confirm the refrigerant authenticity.
Check the refrigerant by following the steps shown in
refrigerant indoors at a constant temperature and humidity for 24 hours. Use
a thermometer to measure the external surface temperature of the
refrigerant container, and connect a pressure gauge to the container to
measure its internal pressure. Determine the saturation pressure that
corresponds to the measured external surface temperature according to
3-1 and calculate the deviation from the measured internal pressure. If the
deviation is more than 0.2 MPa, the refrigerant is not qualified and should be
replaced.
Saturation
Pressure-
Surface
Pressure
(MPa)
0.7
0.73
0.75
0.78
Copyright © Huawei Technologies Co., Ltd.
Tempe Saturation
rature Pressure-
(°C) Surface
Pressure (MPa)
19 1.31
20 1.35
21 1.39
22 1.43
3 Installation Guide
Figure 3-3: Keep the
Temper Saturation
ature Pressure-
(°C) Surface
Pressure (MPa)
38 2.21
39 2.27
40 2.33
41 2.39
Table
28