Photovoltaic Multi VRF
15
4.4.2 Refrigerant Adding
(1) Refrigerant quantity of outdoor unit before delivery:
Model
GMV-Y120WL/A-T
GMV-Y140WL/A-T
GMV-Y160WL/A-T
Refrigerant Qty (kg)
3.3
3.3
3.3
Note:
①
The refrigerant amount charged before delivery doesn’t include the amount that needs to be
added to indoor units and the connection pipeline.
②
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.
③
Record the amount of additional refrigerant for convenience of after-sales service.
(2) Calculation of the amount of additional refrigerant
When the ODU is GMV-Y***WL/A-T, adding refrigerant method includes 3 steps as follow:
1) Amount of additional refrigerant depending on the pipe size(X)
2) Amount of additional refrigerant depending on Quantity of IDU(Y)
3) Amount of additional refrigerant depending on certain model of IDU(Z)
Total charging amount =X+Y+Z
Detail calculation is as follow:
1) X
= ∑(Liquid pipe length
×
amount of additional refrigerant of each 1m)
Size of liquid pipe (mm)
Φ19.05
Φ15.9
Φ12.7
Φ9.52
Φ6.35
Additional amount(kg/m)
0.250
0.170
0.110
0.054
0.022
2) Y=(Quantity of IDU
－
2)x0.3 kg
3) List of certain model of IDU require amount of additional refrigerant Z
is as follow
(Unit: kg)
Capacity
Model
2.8
3.2
3.6
4.0
5.6
6.3
7.1
8.0
9.0
10.0
11.2
12.5
Big Duct Type
GMV-NDR**PH/B1-T
0.50
0.50
0.50
0.50
1.10
1.10
1.10
1.10
1.10
1.15
1.15
1.15
Big Cassette Type
GMV-ND**T/A1-T
1.00
1.00
1.00
Example
：
Содержание GMV-Y120WL/A-T
Страница 42: ......
