Gree GMV-24WL/C-T, Руководство по обслуживанию

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GREE DC Inverter Side Discharge VRF
Ⅱ
for North America
83
outdoor unit. If required amount cannot be quickly filled due to pressure increase of the pipe, then set the
unit in cooling startup and fill refrigerant from the low pressure check valve of the outdoor unit.
(4) Calculation example
IDU
No.
IDU
①
IDU
②
IDU
③
IDU
④
Model
Duct type
GMV-ND18PLS/A-T(U)
Duct type
GMV-ND12PLS/A-T(U)
Duct type
GMV-ND09PLS/A-T(U)
Duct type
GMV-ND09PLS/A-T(U)
Liquid pipe:
No. A B C D
Pipe size
Φ9.52 Φ9.52 Φ9.52 Φ6.35
Length 10m 5m 5m 5m
No. a b c d
Pipe size
Φ9.52 Φ6.35 Φ6.35 Φ6.35
Length 3m 3m 2m 1m
Total length of each liquid pipe
Φ9.52
：
A+B+C+a=10+5+5+3=23m
Φ6.35: D+b+c+d=5+3+2+1=11m
Quantity of indoor unit: 4 sets
Therefore, the minimum quantity of additional refrigerant = (23×0.054+11×0.022)+(4-2)×0.3
＝
2.084kg(73.5oz)