Mitsubishi Electric SRK100VNPZJX, Technical Manual

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(c) Calculation of total operation characteristics
Since the operation characteristics of V Multi system depend on combination of indoor unit, calculate the total operation characteristics
of the system by using the formulas below according to speciations of each indoor unit or outdoor unit.
1) 1 Phase models
a) Total power consumption
Total power consumption (kW) = Power consumption of outdoor unit +
¤
(Power consumption of indoor unit)
b) Total running current
Total running current (A) = Running current of outdoor unit +
¤
(Running current of indoor unit)
c) Total power factor
Total power factor (%) = [Total power consumption (W) / Total running current (A)
s
Power source]
s
100
Total operation characteristics = Operation characteristic value of outdoor unit + Operation characteristic value of indoor unit
[Example]
(Conditions) Operation Voltage ········ Indoor unit: 220 V, 50 Hz
Outdoor unit: 220 V, 50 Hz
Operation mode ··········· Cooling and Heating
Unit······························· Outdoor unit: FDC140VN × 1 unit
Indoor unit: FDT71VF × 2 units
Item
Model
FDC140VN FDT71VF
Operation characteristics of each unit
(Cooling/Heating)
Power consumption (kW)
Running current (A)
0.08/0.08
0.40/0.40
4.51/4.40
20.4/19.5
①
Total power consumption (kW)
(Cooling) 4.51 + (0.08 × 2) = 4.67
(Heating) 4.40 + (0.08 × 2) = 4.56
②
Total running current (A)
(Cooling) 20.4 + (0.40 × 2) = 21.2
(Heating) 19.5 + (0.40 × 2) = 20.3
③
Total power factor (%)
(Cooling) × 100 = 99 %
(Heating) × 100 = 99 %
4.67 × 1000
21.2 × 220
4.56 × 1000
20.3 × 220
.
.
.
.
2) 3 Phase models
a) Total power consumption
Total power consumption (kW) = Power consumption of outdoor unit +
¤
(Power consumption of indoor unit)
b) Total running current
Total running current (A) = Running current of outdoor unit + [
¤
(Running current of indoor unit) × 1/3]
c) Total power factor
Total power factor (%) = [Total power consumption (W) /
√
× Total running current (A) × Power source] × 100
Total operation characteristics = Operation characteristic value of outdoor unit + Operation characteristic value of indoor unit
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