Airwell HDL Manuel D'installation page 33

Configuration of connection pipe
Sheet 2. Additional refrigerant charging amount for R32
Diameter of connection pipe mm
Liquid pipe
Ф6
Ф6 or Ф9.5
Ф12
Ф16
Ф19
Ф22.2
Note: The additional refrigerant charging amount in Sheet 2 is recommended
value, not compulsory.
Gas pipe
Ф9.5 or Ф12
Ф16 or Ф19
Ф19 or Ф22.2
Ф25.4 or Ф31.8
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Indoor unit throttle
cooling and
heating (g / m)
16
40
80
136
200
280
29
Outdoor unit throttle
cooling and
heating
(g / m)
16
40
96
96
200
280