Refrigerant Charging Procedure; Determine Addition Refrigerant Charge - Gree Neo GWH09MA-A3DNA3A Installation, Service & Troubleshooting

Please refer to your units installation manual for proper charge. If your lineset exceeds the chart below for your
model, additional charge may be required. The charge must we weighed in with a refrigerant charging scale.
You can only add additional refrigerant to a new installation. If a low or high charge is suspected, you must
reclaim the refrigerant, then weigh in the correct amount per specifications including any additional for long
linesets. It is important to check for leaks before adding refrigerant.

1. Determine addition refrigerant charge.

The Neo single zone units contain a factory charge adequate for up to a total length of refrigerant line as
indicated in the chart below. Additional refrigerant will need to be added for total lengths over the listed length.
Confirm the following chart with your installation manual for additional charge amounts:
Additional Charge
Max Length without
Additional Charge
Factory Charge
Max. Total Piping
Length
Max. Elevation
Additional Charge
Max Length without
Additional Charge
Factory Charge
Max. Total Piping
Length
Max. Elevation

Refrigerant Charging Procedure

GWH09MA- GWH12MA-
A3DNA2B A3DNA2B
0.22 oz./ft. 0.22 oz./ft.
25 ft.
42 oz. 45.5 oz.
66 ft.
33 ft.
GWH18MC- GWH24MD-
D3DNA3D D3DNA3D
0.22 oz./ft. 0.5 oz./ft.
25 ft.
49 oz.
82 ft.
33 ft.
GWH09MB-
D3DNA3D
0.22 oz./ft.
25 ft. 25 ft.
46 oz.
66 ft. 50 ft.
33 ft. 33 ft.
GWH30LB-
D3DNA3E
0.5 oz./ft.
25 ft. 25 ft.
56 oz. 84.7 oz.
82 ft. 100
33 ft. 33 ft.
GWH12MB-
D3DNA3D
0.22 oz./ft.
25 ft.
46 oz.
66 ft.
33 ft.
GWH36LB-
D3DNA3E
0.5 oz./ft.
25 ft.
91.7 oz.
100
33 ft.
59