-
132
-
(c)
Calculation of total operation characteristics
Since the operation characteristics of series Multi depend on combination of indoor unit, calculate the total operation charac-
teristics of the system by using the formulas below according to specifications 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)
×
Power source]
×
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: FDCVA302HENR
×
1 unit
Indoor unit: FDTA151R
×
1 units, FDTA151R
×
1 units
Item
Model
FDCVA302HENR
FDTA151R
FDTA151R
Operation characteristics of each unit
(Cooling/Heating)
Power consumption (kW)
Running current (A)
0.046/0.046
0.15/0.15
2.02/2.16
10.4/11.1
0.046/0.046
0.15/0.15
1
Total power consumption (kW)
(Cooling) 2.02 + 0.046 + 0.046 = 2.11 (kW)
(Heating) 2.16 + 0.046 + 0.046 = 2.25 (kW)
2
Total running current (A)
(Cooling) 10.4 + (0.15 + 0.15)
= 10.7 (A)
(Heating) 11.1 + (0.15 + 0.15)
= 11.4 (A)
3
Total power factor (%)
2.11
×
1000
(Cooling)
10.7
×
220
×
100
.
=. 90 %
2.25
×
1000
(Heating)
11.4
×
220
×
100
.
=. 90 %
