Gree GMV-100WL/A-T, Руководство по обслуживанию

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GREE DC Inverter Multi VRF System II Service Manual
142
IDU
No. IDU ķ IDU ĸ IDU Ĺ IDU ĺ
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 Φ 9.52 Φ 9.52 Φ 9.52 Φ 6.35
Length 10m 5m 5m 5m
No. a b c d
Pipe size Φ 9.52 Φ 6.35 Φ 6.35 Φ 6.35
Length 3m 3m 2m 1m
Total length of each liquid pipe
Φ 9.52 ˖ A+B+C+a=10+105+5+3=23m
Φ 6.35: D+b+c+d=5+3+2+1=11m
Note: Liquid pipe that is within 20m doesn’t need to be added with refrigerant.
Therefore, the minimum quantity of additional refrigerant = (23-20)×0.054+11×0.022
˙
0.404kg
˄ 2 ˅ Calculate the additional volume of refrigera ˄ GMV-80WL/C-T ǃ GMV-100WL/C-T ǃ
GMV-121WL/C-T
ǃ
GMV-80WL/A-T
ǃ
GMV-100WL/A-T
ǃ
GMV-121WL/A-T
ǃ
GMV-120WL/C-T
ǃ
GMV-140WL/C-T ǃ GMV-160WL/C-T ǃ GMV-120WL/C-X ǃ GMV-140WL/C-X,GMV-160WL/C-X ˅
1) Refrigerant quantity of outdoor unit before delivery:
Model
GMV-
80WL
/A-T
GMV-
100W
L/A-T
GMV-
121W
L/A-T
GMV-
80WL
/C-T
GMV-
100W
L/C-T
GMV-
121W
L/C-T
GMV-
141W
L/C-T GMV-
120W
L/C-T GMV-
140W
L/C-T GMV-
160W
L/C-T GMV-
120W
L/C-X GMV-
140W
L/C-X GMV-
160W
L/C-X
Refrigerant Qty (kg)
1.8 1.8 2.0 1.8 1.8
2.0
3.3 3.3 3.3 3.3 3.3 3.3 3.3
Note:
ķ
The refrigerant amount charged before delivery do esn’t includ e the amount that needs to be
added to indoor units and the connection pipeline.
ĸ
Length of connection pipe is decided on site. Therefore the amount of additional refrigerant
shall be decided on site according to the dimension and length of field-installed liquid pipe.
Ĺ
Record the amount of additional refrigerant for convenience of after-sales service.
2) Calculation of the amount of additional refrigerant
Calculation method of the quantity of additional refrigerant (based on liquid pipe)
Quantity of additi onal refrigerant = ∑length of liquid pipe ×quantity of additional refrigerant per
meter+
˄
quantity of indoor unit -2
˅
×0.3
Quantity of additional refrigerant per meter for liquid pipe
˄
kg/m
˅
Φ 22.2 Φ 19.05 Φ 15.9 Φ 12.7 Φ 9.52 Φ 6.35
0.35 0.25 0.17 0.11 0.054 0.022
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.