V6-i VRF 50Hz
16
Midea
V
6
-i
Series
Engineering
Da
ta Bo
ok
Table 1-5.5: Combinations of Indoor and outdoor units
Outdoor unit capacity
Sum of capacity
indexes of
connected indoor
units (standard
indoor units only)
Maximum number
of connected
indoor units
kW
HP
Capacity
index
20.0
7
200
100 to 260
10
22.4
8
224
112 to 291.2
13
26.0
9
260
130 to 338
15
28.0
10
280
140 to 364
16
33.5
12
335
167.5 to 435.5
20
The number of connected indoor units is 5 and the maximum number of connected indoor units on the 9HP outdoor
unit is 12, so the number of connected indoor units is within the limitation.
Calculate the corrected capacity of the outdoor unit:
a)
The sum of the indoor unit CIs is 314 and the CI of the 9HP outdoor unit (MVi-260WV2RN1(A)) is 260, so the
combination ratio is 314 / 260 = 121%.
b)
Using the outdoor unit’s cooling capacity table, interpolate to obtain the capacity (“B”) corrected for outdoor air
temperature, indoor air temperature, and combination ratio. Refer to Tables 1-5.6 and 1-5.7.
Table 1-5.6: Extract from table 2-8.3
MVi-260WV2RN1(A)
cooling capacity
Table 1-5.7: Cooling capacity calculated by interpolation
CR
Outdoor
air
temp.
(°C DB)
Indoor air temp.
(°C DB / °C WB)
CR
Outdoor
air
temp.
(°C DB)
Indoor air temp.
(°C DB / °C WB)
25.8 / 18.0
25.8 / 18.0
TC
PI
TC
PI
kW
kW
kW
kW
130%
31
28.46
9.17
130%
33
28.03
9.52
33
28.03
9.52
35
27.61
9.89
B = 27.59
1
120%
31
27.95
8.88
120%
33
27.54
9.24
33
27.54
9.24
35
27.10
9.60
Notes:
1.
27.54 + (28.03 – 27.54) × (121 – 120) / (130 – 120) =
27.59