DM14-01.01.18en
MIV V5 Heat Recovery DC Inverter R410A
Installation Procedure
122
11. Additional refrigerant charge
Calculate the additional refrigerant charge according to the diameter and the length of the liquid side pipe of
the outdoor/indoor unit connection. The refrigerant is R410A.
Note: Assume equivalent pipe length of the branch joint is 0.5m, and MS is 1m (for calculation purposes).
The refrigerant charge of MS02 is 0.3kg/per, MS04/MS06 is 0.5kg/per.
Pipe size of liquid side ( mm)
Additional refrigerant charge per meter (kg)
Φ
6.35 0.023
Φ
9.53 0.060
Φ
12.7 0.120
Φ
15.9 0.180
Φ
19.1 0.270
Φ
22.2 0.380
Φ
25.4 0.550
Φ
28.6 (0.710
Charge the additional refrigerant from the low-pressure pipe and liquid pipe.
Switch the code S5
The system will quit from vacuum mode and go to normal running after power on.