R410A All DC Inverter V4+S Series 60Hz MCAC-VTSM-2015-09
118 Installation
5) The different leak detector.
12.2 Calculating the refrigerant recharge volume
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 (for calculation purposes).
Pipe size of liquid side ( in.(mm))
Additional refrigerant charge per meter (lbs.(kg))
Charge the additional refrigerant from the gas pipe or liquid pipe. After the system is running, if it is needed
to charge refrigerant during maintenance, charge at the gauge point.
Calculating formula (R410A):
The recharged volume: R (kg) = (L1×0. 022 kg/m) + (L2×0. 057 kg/m) + (L3×0. 110 kg/m) + (L4×0.170 kg/m)
+ (L5×0. 260 kg/m) + (L6×0. 360 kg/m) + (L7×0. 520kg/m) + (L8×0. 680kg/m)
L1: Actual total length of Φ6.35 liquid pipe (m); L2: Actual total length of Φ9.53 liquid pipe (m);
L3: Actual total length of Φ12.7 liquid pipe (m); L4: Actual total length of Φ15.9 liquid pipe (m);
L5: Actual total length of Φ19.1 liquid pipe (m); L6: Actual total length of Φ22.2 liquid pipe (m);
L7: Actual total length of Φ25.4 liquid pipe (m); L8: Actual total length of Φ28.6 liquid pipe
13. Electrical wiring installation
13.1 Wiring terminal instruction
13.2 Electric characteristics
Notes:
1. The current value of combination unit is the total value of each basic model: