8
5
DATA
5-1. COOLING AND HEATING CAPACITY AND CHARACTERISTICS
5-1-1. Method for obtaining system cooling and heating capacity:
To obtain the system cooling and heating capacity and the electrical characteristics of the outdoor unit, first add up the ratings
of all the indoor units connected to the outdoor unit (see table below), and then use this total to find the standard capacity with
the help of the tables on 5-2.STANDARD CAPACITY DIAGRAM.
(1) Capacity of indoor unit
5-1-2. Method for obtaining the heating and cooling capacity of an indoor unit:
(1) The capacity of each indoor unit (kW)
= the capacity
A
(or
B
)
o
(2) Sample calculation (using the system described above in 5-1-1. (2) ):
model capacity
total model capacity of all indoor units
During cooling:
During heating:
• The total model capacity of the indoor unit is:
2.8
o
2 + 5.6
o
2=16.8kW
Therefore, the capacity of PKFY-P25VAM-E and
PLFY-P50VLMD-E will be calculated as follows by
using the formula in 5-1-2. (1):
Model 25=14.6
o
= 2.43kW
Model 50=14.6
o
= 4.87kW
• The total model capacity of indoor unit is:
3.2
o
2 + 6.3
o
2=19.0
Therefore, the capacity of PKFY-P25VAM-E and PLFY-
P50VLMD-E will be calculated as follows by using the
formula in 5-1-2. (1):
Model 25=16.33
o
= 2.75kW
Model 50=16.33
o
= 5.41kW
2.8
16.8
5.6
16.8
6.3
19.0
3.2
19.0
(2) Sample calculation
1
System assembled from indoor and outdoor unit (in this example the total capacity of the indoor units is greater than that of
the outdoor unit)
Outdoor unit PUMY-P125VHM
Indoor unit PKFY-P25VAM-E
o
2 , PLFY-P50VLMD-E
o
2
2
According to the conditions in
1
, the total capacity of the indoor unit will be: 28
o
2 + 56
o
2 = 168
3
The following figures are obtained from the 168 total capacity row of 5-2. STANDARD CAPACITY DIAGRAM :
Model 20
Model Number for indoor unit
Model Capacity
22
Model 15
17
Model 25
28
Model 32
36
Model 40
45
Model 50
56
Model 63
71
Model 71
80
Model 80
90
Model 100
112
Model 125
140
Model 140
160
Cooling
A
14.60
Heating
17.6
Cooling
19.4
Heating
3.99
Cooling
4.39
Heating
B
16.33
Capacity (kW)
Outdoor unit power consumption (kW)
Outdoor unit current (A)/230V
