Huawei NetCol8000-A045D User Manual page 170

NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual
●
Figure 6-5 NetCol8000-A045/A055/A090 vacuumizing the system with a low-
temperature component (downflow)
(1) Vacuum pump
Issue 05 (2020-10-10)
Figure 6-4 NetCol8000-A060 vacuumizing the system without a low-
temperature component (upflow)
(1) Vacuum pump
(3) Low-pressure needle valve
If a low-temperature component is installed on the outdoor side, connect the
pressure gauge and vacuum pump at the low-pressure, exhaust pipe, and
liquid pipe needle valves to vacuumize the system simultaneously, as shown
in Figure 6-5.
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(2) Pressure gauge
(4) Exhaust pipe needle valve
(2) Pressure gauge 1
6 Power-On Commissioning
(3) Pressure gauge 2
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