Data - Mitsubishi MXZ-8B140VA 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 at the back of the manual "INDOOR UNITS COMBINATION SHEETS".
(1) Capacity of indoor unit
Model number Model
for indoor unit 15
Model capacity 1.5
(2) Sample calculation
System assembled from indoor and outdoor unit (in this example the total capacity of the indoor units is greater than that of
1
the outdoor unit)
• Outdoor unit MXZ-8B140VA
• Indoor unit MSZ-EF25VE o 2 , PEAD-RP50JAQ o 2
According to the conditions in
2
T he following figures are obtained from the 150 total capacity row of the standard capacity diagram (INDOOR UNITS
3
COMBINATION SHEETS: at the back of the manual).
Capacity (kW)
Cooling
14.0
A
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:
2.5 o 2 + 5.0 o 2=15.0kW
Therefore, the capacity of MSZ-EF25VE and
PEAD-RP50JAQ will be calculated as follows by
using the formula in 4-1-2. (1):
2.5
Model 25=14.0 o = 2.33kW
15.0
5.0
Model 50=14.0 o = 4.67kW
15.0
OCH480D
Model Model Model
18 20 22
1.8 2.0 2.2
, the total capacity of the indoor unit will be: 2.5 o 2 + 5.0 o 2 = 15.0
1
Outdoor unit power consumption (kW)
Heating Cooling
5.22
16.0
B
Model Model Model
25 35 42
2.5 3.5 4.2
Heating
5.01
(or ) o
A B
total model capacity of all indoor units
• The total model capacity of indoor unit is:
2.5 o 2 + 5.0 o 2=15.0
Therefore, the capacity of MSZ-EF25VE and PEAD-
RP50JAQ will be calculated as follows by using the
formula in 4-1-2. (1):
Model 25=16.0 o = 2.67kW
Model 50=16.0 o = 5.33kW
13
Model Model Model
50 60 71
5.0 6.0 7.1
Outdoor unit current (A)/230V
Cooling
22.9
model capacity
During heating:
2.5
15.0
5.0
15.0
Model Model
80 100
8.0 10.0
Heating
22.0