Gree GWC09KF-D3DNXXA Owner's Manual page 30

Configuration of connection pipe and additional volume of refrigerant
Sheet 2. Additional refrigerant charging amount for R22 R407C R410A
and R134a
Diameter of connection pipe mm
Liquid pipe
Ф6
Ф6 or Ф9.5
Ф12
Ф16 Ф25.4 or Ф31.8
Ф19
Ф22.2
Note: The additional refrigerant charging amount in Sheet 2 is recommended
value, not compulsory.
Gas pipe
cooling and heating
Ф9.5 or Ф12
Ф16 or Ф19
Ф19 or Ф22.2
-
-
Indoor unit throttle
Cooling only,
(g / m)
20
50
100
170
250
350
27
Outdoor unit throttle
Cooling only Cooling and
(g / m) heating (g /
15
15
30 120
60 120
250 250
350 350
m)
20
50