Material Preparations; Optional) Refrigerant R410A - Huawei NetCol8000-E220 User Manual

NetCol8000-E220 Modular Indirect Evaporative Cooling
System
User Manual
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3.2 Material Preparations

Materials are classified to Huawei-provided, self-purchased, and onsite prepared materials,
which are marked as mandatory, optional, and engineering purchasing in this document.
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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 3-2 Checking refrigerant
Issue 02 (2019-10-10)
Engineering air channels need to be supported to ensure that the air channels and
NetCol8000 connections are not forced.
Pipe thermal insulation: Take thermal insulation measures for all inlet and outlet pipes of
the NetCol8000. Leave space for operating and maintaining thermal insulation for valves
and joints. Take insulation measures at low temperatures to prevent freezing in the water
pipe.
Mandatory: mandatory configuration. This material is provided by Huawei and can be
found in delivered fittings.
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.
Contact the refrigerant producer to confirm the refrigerant authenticity.
Check the refrigerant by following the steps shown in
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
Table 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.
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3 Installation Guide
Figure 3-2: Keep the refrigerant
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