Calculation Of Total Operation Characteristics; Operation Characteristics Of Each Unit; Total Power Input; Total Running Current - Mitsubishi Heavy Industries FDCA Series Technical Manual

FDKN Series
Model
Item
Power input (kW)
Running current (A)
FDUR Series
Model
Item
Power input (kW)
Running current (A)
Notes (1) This packaged air-conditioner is manufactured and tested in conformity with the following standard.
ISO-T1 "UNITARY AIR-CONDITIONERS"
(2) The values shown in the above table are common to both cooling and heating operations.
(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)Total power input

Total power input (kW) = Power input of outdoor unit + ∑ (Power input of indoor unit)

2)Total running current

Total running current (A) = Running current of outdoor unit + [∑ (Running current of indoor unit) × 2/3]
3)Total power factor
Total power factor (%) = [Total power input (W) / √
Total operation characteristics = Operation characteristic value of outdoor unit + Operation characteristic value of indoor unit
[Example]
(Conditions)

Operation characteristics of each unit

Model
Item
Power input (kW)
Running current (A)
1 Total power input (kW)
(Cooling) 6.79 + 0.07+ 0.15 = 7.01 (kW)
(Heating) 6.69 + 0.07+ 0.15 = 6.91 (kW)
2 Total running current (A)
(Cooling) 11.0 + (0.3+0.7 × 2 ) 11.7 (A)
(Heating) 11.0 + (0.3 + 0.7 × 2 ) 11.7 (A)
3 Total power factor (%)
(Cooling)
√
(Heating)
√
151 201
0.02
0.2
201 251
0.19 0.22
0.9 1.0
Operation Voltage ········Indoor unit: 230 V, 50 Hz
Operation mode ··········· Cooling and Heating
Unit·······························Outdoor unit: FDCA801HES × 1 unit
FDCA801HES
6.79/6.69
11.0/11.0
.
= .
3
.
= .
3
7.01 × 1000
× 100 86 % .
= .
—
3 × 11.0 × 400
6.91 × 1000
× 100 85 %
.
= .
—
3 × 11.0 × 400
FDKN Series
251
0.03
0.2
FDUR Series
301 401
0.24 0.37
1.3 1.7
—
3 × Total running current (A) × Power source] × 100
Outdoor unit: 400 V, 50 Hz
Indoor unit: FDTA301 × 1 units, FDTA501 × 1 units
FDTA301
0.07/0.07
0.3/0.3
19
- -
(230 V)
301
0.08
0.5
(230 V)
501
0.45
2.0
(Cooling/Heating)
FDTA501
0.15/0.15
0.7/0.7