Midea V4 Plus S Series Service Manual page 18

R410A All DC Inverter V4+S Series 60Hz MCAC-VTSM-2015-09
Then calculate the outdoor capacity in 92% combination index: 26.8+{(28.3-26.8)/10}×2=27.1kW(92470Btu/h);
 Capacity modification coefficient with pipe length 50m(164ft) and height difference 30m(98.4ft): 0.958
 Each indoor unit cooling capacity
Room A: MDV-D22T2 (27.1×22/258×0.958=2.21kW) (92470×7510/88000×0.958=7540Btu/h)
Room B: MDV-D28T2 (27.1×28/258×0.958=2.82kW) (92470×9550/88000×0.958=9620Btu/h)
Room C: MDV-D36T2 (27.1×36/258×0.958=3.62kW) (92470×12300/88000×0.958=12350Btu/h)
Room D: MDV-D45T2 (27.1×45/258×0.958=4.53kW) (92470×15400/88000×0.958 =15460Btu/h)
Room E: MDV-D56T2 (27.1×56/258×0.958=5.64kW) (92470×19110/88000×0.958=19250Btu/h)
Room F: MDV-D71T2 (27.1×71/258×0.958=7.14kW) (92470×24200/88000×0.958=24360Btu/h)
Location Room A Room B Room C Room D Room E Room F
Load kW(Btu/h) 2.1(7170) 2.8(9559) 3.5(11900) 4.6(15700) 5.8(19790) 7.2(24570)
Model 22 28 36 45 56 71
Capacity kW(Btu/h) 2.21(7540) 2.82(9620) 3.62(12350) 4.53(15460) 5.64(19250) 7.14(24360)
2.4 Conclusion
Generally, this result is acceptable, therefore the calculation process has been completed. But if it appears that
the result is not acceptable, the above process may be repeated.
Remark: In this sample, other capacity modification indexes were not considered and are assumed as 1.0.
For more details about the effect factor such as outside ambient/inside ambient DB/WD, please refer to the
performance table of indoor and outdoor units.
16 Selection Procedure