Gree GMV-36WL/A-T(U) - Page 83

DC Inverter Side Discharge VRF Ⅱ for North America
81
Fig. 22
6.3.2 Refrigerant Adding
（1） Refrigerant quantity of outdoor unit before delivery:
Model
GMV-36WL/A-T(U)
GMV-48WL/A-T(U)
GMV-60WL/A-T(U)
Refrigerant Qty (kg/oz)
5.0
(176)
5.0
(176)
6.5
（229）
(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
Calculation method of the quantity of additional refrigerant (based on liquid pipe)
Quantity of additional refrigerant = ∑length of liquid pipe X quantity of additional refrigerant
per meter(39-3/8inch)
Diameter of
liquid pipe
(mm/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)
kg/m
0.35
0.25
0.17
0.11
0.054
0.022
oz/inch
0.314
0.224
0.152
0.099
0.048
0.020
NOTICE! Liquid pipe that is within 20m(65-5/8feet) doesn’t need to be added with
refrigerant.
First confirm that there is no leakage from the system. When compressor is not