R410A All DC Inverter V5 X Series 50Hz
MCAC-VTSM-2015-10
16 Selection Procedure
INDOOR UNIT CAPACITY INDEX
Unit Size
Model
Model
Model
Model
Model
Model
Model
Model
Model
Model
18
22
28
36
45
56
71
80
90
112
Capacity
kW
1.8
2.2
2.8
3.6
4.5
5.6
7.1
8
9
11.2
Unit Size
Model
Model
Model
Model
Model
Model
Model
Model
Model
125
140
160
200
250
280
400
450
560
Capacity
kW
12.5
14
16
20
25
28
40
45
56
1.4 Actual performance data
Use OUTDOOR UNIT CAPACITY TABLES.
Determine correct table according to the outdoor unit model and combination ratio.
Enter the table at given indoor and outdoor temperature and find the outdoor unit capacity and power input.
The individual indoor unit capacity (power input) can by calculated as follows.
IUC=OUC × INX/TNX
Notes:
IUC:
Each indoor unit capacity
OUC:
Outdoors unit capacity
INX:
Each indoor unit capacity index
TNX:
Total capacity index
Then, correct the indoor unit capacity according to the piping length.
If the corrected capacity is smaller than the load, the size of indoor unit has to be increased and repeat the
same selection procedure.
1.5 Cooling capacity modification in accordance with the length of refrigerant pipe
Modification coefficient of the length and height difference of refrigerant pipe:
1.5.1 Cooling capacity modification
L: Refrigerant pipe equivalent length
H: Height difference between outdoor and indoor unit. Positive data means outdoor unit is higher. Negative
70
60
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
10
20
30
40
50
60
70
80
90
100 110 120 130 140 150 160 170 180
100%
99
97
94
92
87
89
85
H(m)
L(m)
190 200
83
90
80
80
210 220