Scenarios Without A Low-Temperature Component - Huawei NetCol8000-A Series Quick Manual

Indoor Unit
NetCol8000-A060D
including a low-
temperature
component
NetCol8000-A060U
NetCol8000-A060U
including a low-
temperature
component
NetCol8000-A120D
NetCol8000-A120D
including a low-
temperature
component
Scenarios without a low-temperature component (NetCol8000-A045/A090 Downflow)
•
Left pressure gauge is low pressure gauge. Right pressure gauge is high pressure gauge.
•
The specification of needle valve is 7/16-20UNF.
Vacuum pump
Refrigerant cylinder
Electronic
scale
The figures use a single-system unit as an example. You need to perform leak checking,
vacuuming, and precharging refrigerant on both systems of a dual-system unit.
Outdoor Unit
NetCol500-A080
NetCol500-A080
NetCol500-A110
NetCol500-A080
NetCol500-A080
NetCol500-A110
NetCol500-A080
1. Leak checking
2. Vacuuming
3. Precharging refrigerant
Reducing valve
Nitrogen cylinder
Refrigerant Charge Amount (L) (L is total one-
way pipe length)
0m ＜ L ≤
10m ＜ L ≤ 60m
10m
42+ (L-10) ×0.23
42
15.5+ (L-10) ×0.23 15.5+ (L-10) ×0.31
15.5
22+ (L-10) ×0.23
22
42+ (L-10) ×0.23
42
15.5+ (L-10) ×0.23 15.5+ (L-10) ×0.31
15.5
22+ (L-10) ×0.23
22
42+ (L-10) ×0.23
42
Nut
27
60m ＜ L ≤ 100m
42+ (L-10) ×0.31
22+ (L-10) ×0.31
42+ (L-10) ×0.31
22+ (L-10) ×0.31
42+ (L-10) ×0.31
Low-pressure needle valve
Exhaust pipe
needle valve