39
Additional refrigerant charging amount for R22, R407C, R410A and R134a
Diameter of connection pipe
Liquid pipe(mm)
Gas pipe(mm)
Φ6
Φ6
or
Φ
9.52
Φ12
Φ16
Φ19
Φ22.2
Φ
9.52 or
Φ
12
Φ16 or Φ19
Φ19 or Φ22.2
Φ25.4 or Φ31.8
_
_
Cooling only(g/m) Cooling and heating(g/m)
15
15
30
60
250
250
350
350
120
120
50
20
Outdoor unit throttle
Configuration of connection pipe
5. If the outdoor unit is higher than the indoor unit for more than 5m, an oil return
bend is needed.
Below 5m
Above 5m
outdoor unit
indoor unit
indoor unit
outdoor unit
oil return bend
