Indoor Unit Combination Total Capacity Index Table; Indoor Unit Capacity Index; Actual Performance Date; Capacity Modification In Accordance With Length Of Refrigerant Pipe - Midea VRF V4 Plus I Series Manual

MCAC-VTSM-2014-04
rooms may be considered.
The indoor and outdoor unit combination is determined that the sum of indoor unit capacity index is nearest to
and smaller than the capacity index at 100% combination ratio of each outdoor unit. Up to 8~16 indoor units
can be connected to one outdoor unit. It is recommended to choose a larger outdoor unit if the installation
space is large enough.
If the combination ratio is greater than 100%, the indoor unit selection shall be reviewed by using actual
capacity of each indoor unit.

INDOOR UNIT COMBINATION TOTAL CAPACITY INDEX TABLE

Outdoor Unit
26HP
28HP
30HP
32HP

INDOOR UNIT CAPACITY INDEX

Unit Size
Capacity Index (kW)
Unit Size
Capacity Index (kW)

1.4 Actual performance date

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
Where,
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 Capacity modification in accordance with the length of refrigerant pipe
1.5.1 Cooling capacity modification
Modification coefficient of the length and high difference of refrigerant pipe:
Selection Procedure
130% 120%
94.9 87.6
102.1 94.2
110.5 102
117 108
Model Model Model
18 22 28
1.8 2.2 2.8
Model Model Model
125 140 160
12.5 14.0 16
R410A DC Inverter VRF V4 Plus Individual Series 50Hz
Indoor Unit Combination Ratio (kW)
110% 100%
80.3 73
86.4 78.5
93.5 85
99 90
Model Model
36 45
3.6 4.5
Model Model
200 250
20 25
90% 80% 70%
65.7 58.4 51.1
70.7 62.8 55.0
76.5 68 59.5
81 72 63
Model Model Model
56 71 80
5.6 7.1 8.0
Model Model Model
280 400 450
28 40 45
60% 50%
43.8 36.5
47.1 39.3
51 42.5
54 45
Model Model
90 112
9.0 11.2
Model
560
56
59