8
MULTI Standard
Outdoor Unit
4. Combination Table
The individual indoor unit capacity can be calculated as follow depending on the total connected capacity of all
indoor units.
[ Q
idu(combi)
] = [ Q
odu(rated)
]X [ Q
idu(rated,each)
] / [ Q
idu(rated,total)
]
Q
idu(combi)
: Individual indoor unit combinational capacity
Q
odu(rated)
: Outdoor unit rated capacity
Q
idu(rated,each)
: Capacity of individual indoor unit
Q
idu(rated,total)
: Total sum of capacity for connected indoor units
Important
In case that the connected indoor units include high static duct type, capacity index of high static duct indoor unit
should be multiplied by 1.3 times when calculate the ‘Combination Ratio’.
4.1 A2UQ18GFAB
Cooling
Combination
(Capacity index, kBtu/h)
Cooling
Total Capacity
Input (W)
Min Rated Max
Unit-A Unit-B Unit-C Unit-D Unit-E Total Btu/h kW Btu/h kW Btu/h kW Min Rated Max
1 Unit Operation
9 - - - - 9 5,400 1.58 9,000 2.64 10,800 3.17 368 643 821
12 - - - - 12 7,200 2.11 12,000 3.52 14,400 4.22 532 930 1,188
2 Units Operation
9 9 - - - 18 10,800 3.17 18,400 5.39 21,600 6.33 913 1,634 2,041
9 12 - - - 21 10,800 3.17 18,400 5.39 21,600 6.33 913 1,634 2,041
Note
1. Capacities are based on the following conditions :
- Cooling : Indoor Ambient Temp. 27°CDB/19°CWB, Outdoor Ambient Temp. 35°CDB/24°CWB
- Heating : Indoor Ambient Temp. 20°CDB / 15°CWB, Outdoor Ambient Temp. 7°CDB / 6°CWB
- Interconnected piping is standard length and difference of Elevation (Outdoor ~ Indoor Unit) is 0 m.
2. At least two indoor units should be connected. And minimum limit of combination ratio is 40% approximately for rated capacity of outdoor unit.
3. Don't exceed the maximum connectable indoor units number, it can be found in Specifications or combination table of outdoor unit model.
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