Gree GMV-24WL/C-T User Manual

DC Inverter Multi VRF System
13
Quantity of additional refrigerant per meter for liquid pipe (kg/m)/(oz/inch)
Φ22.2(Φ7/8)
Φ19.05(Φ3/4)
Φ15.9(Φ5/8)
Φ12.7(Φ1/2)
Φ9.52(Φ3/8)
Φ6.35(Φ1/4)
0.35
0.25
0.17
0.11
0.054
0.022
0.314
0.224
0.152
0.099
0.048
0.020
First confirm that there is no leakage from the system. When compressor is not working, charge
additional R410A with specific amount to the unit through the filling opening of the liquid pipe valve of
the 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.
(3) Calculation example.
Fig. 20
IDU:
No.
IDU
①
IDU
②
IDU
③
IDU
④
Model
Duct type
GMV-ND72PL/B-T
Duct type
GMV-ND50PL/B-T
Duct type
GMV-ND36PL/B-T
Duct type
GMV-ND25PL/B-T
Liquid pipe:
No.
A
B
C
D
Pipe size
Φ9.52(Φ3/8)
Φ9.52(Φ3/8)
Φ9.52(Φ3/8)
Φ6.35(Φ1/4)
Length
10m(32-3/4feet)
5m(16-3/8feet)
5m(16-3/8feet)
5m(16-3/8feet)
No. a b c d
Pipe size
Φ9.52(Φ3/8)
Φ6.35(Φ1/4)
Φ6.35(Φ1/4)
Φ6.35(Φ1/4)
Length
3m(9-3/4feet)
3m(9-3/4feet)
2m(6-5/8feet)
1m(3-1/4feet)
Total length of each liquid pipe
Φ9.52: A+B+C+a=10+5+5+3=23m (75-1/2 feet)
Φ6.35: D+b+c+d=5+3+2+1=11m(36feet)
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

Gree GMV-24WL/C-T Specifications

General

Brand	Gree
Model	GMV-24WL/C-T
Category	Inverter
Language	English