Data - Mitsubishi Electric PUMY-P100VHM Technical & Service Manual

4

DATA

4-1. COOLING AND HEATING CAPACITY AND CHARACTERISTICS
4-1-1. 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 4-2.STANDARD CAPACITY DIAGRAM.
(1) Capacity of indoor unit
Model Number for indoor unit
Model Capacity
(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
PKFY-P25VAM-E o 2 , PLFY-P50VLMD-E o 2
• Indoor unit
2
According to the conditions in
3
The following figures are obtained from the 168 total capacity row of 4-2. STANDARD CAPACITY DIAGRAM :
Capacity (kW)
Cooling
Heating
A
B
14.60
16.33
4-1-2. Method for obtaining the heating and cooling capacity of an indoor unit:
(1) The capacity of each indoor unit (kW) = the capacity
(2) Sample calculation (using the system described above in 4-1-1. (2) ):
During cooling:
• 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 4-1-2. (1):
2.8
Model 25=14.6 o
16.8
5.6
Model 50=14.6 o
16.8
Model 20 Model 25 Model 32
22 28 36
1 , the total capacity of the indoor unit will be: 28 o 2 + 56 o 2 = 168
Outdoor unit power consumption (kW)
Cooling Heating
4.39 3.99
= 2.43kW
= 4.87kW
Model 40 Model 50 Model 63
45 56 71
Outdoor unit current (A)/230V
Cooling
Heating
19.4
17.6
model capacity
) o
A B
(or
total model capacity of all indoor units
• 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 4-1-2. (1):
Model 25=16.33 o
Model 50=16.33 o
8
Model 71 Model 80 Model 100
80 90 112
During heating:
3.2
= 2.75kW
19.0
6.3
= 5.41kW
19.0
Model 125 Model 140
140 160