Huawei NetCol5000-A User Manual page 145

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
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5.2.2 (Optional) Charging in Refrigerant Oil
Prerequisites
Refrigerant oil is prepared by referring to
and Refrigerant
Procedure
Step 1 Connect the refrigerant oil bucket, pressure gauge, and vacuum pump to the device, as shown
in Figure
Issue 13 (2019-01-15)
If the indoor unit code is one of 52270741, 52270742, 52270743, 52270744, 52270745,
52270746, 52270747, and 52270748, additional refrigerant oil = additional refrigerant
charge x 2.5%.
If no, charge refrigerant oil as follows:
− If the low-temperature component is not connected, do not add refrigerant oil.
If the low-temperature component is connected, and L ≤ 10 m, do not add
−
refrigerant oil.
− If the low-temperature component is connected, and L > 10 m, additional refrigerant
oil = additional refrigerant charge x 4%.
Oil.
5-1.
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5.2.1 Calculation about the Charged the Refrigerant
5 Power-On Commissioning
136