Material Preparations; Optional) Refrigerant R410A - Huawei NetCol5000-A User Manual

NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual

3.2.2 Material Preparations

Materials to be prepared onsite are classified into three categories:




3.2.2.1 (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.
3.
Figure 3-2 Checking refrigerant
Table 3-7 Mapping between temperatures and R410A saturation pressure
Temperature
(° C)
Issue 01 (2017-07-27)
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.
Use high-quality brands such as DuPont, Daikin, or Honeywell.
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 3-7 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-S
urface
Pressure
(MPa)
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Temperature Saturation
(° C) Pressure-S
urface
Pressure
(MPa)
3 Installation Guide
Figure 3-2: Keep the refrigerant
Temperat Saturation
ure (° C) Pressure-S
urface
Pressure
(MPa)
26