Impecca ISMI-W092 Manual page 34

Additional refrigerant charging amount for R22, R407C, R410A and R134a
Diameter of connection pipe
Liquid pipe(mm) Gas pipe(mm) Cooling only(g/m) Cooling and heating(g/m)
15
15
30
60
_ 250
_ 350
31
Outdoor unit throttle
20
50
120
120
250
350