LG ARUM080LTE5 Engineering Product Data Book page 7

Multi V 5
4. Indoor Unit and Outdoor Unit Capacity Index
4.1 Indoor Unit Selection
See the indoor unit capacity tables for given Indoor and Outdoor temperature
Select the unit whose capacity is the nearest to or greater than given load.
Note
Individual Indoor Unit capacity is subject to change by combination. Actual capacity has to be calculated accord-
ing to the combination by using Outdoor unit capacity table.
4.2 Outdoor Unit Selection
Allowable combinations are indicated below. In general, outdoor unit can be selected depending on the location
of the unit, zoning and usage of the rooms.
The indoor and outdoor unit combination is determined by comparing the sum of indoor unit capacity index with
each Outdoor Unit. It is recommended to be the nearest to 100% combination ratio or to be smaller than that. Refer
the table below. To manage cooling/heating load properly, it's better to be selected the bigger capacity outdoor unit
rather than the nearest, if the installation space is large enough.
■ Combination Ratio for System with Normal Indoor Units
Line up Outdoor Unit Type
Heat Pump & Heat Recovery
Heat Pump , Pro, Cooling Only
Multi V 5
Tropical High Efficiency
Tropical Standard
R410A Heat Pump
R410A Heat Recovery
Multi V S
R32 Heat Pump
Multi V Water IV Heat Pump, Heat Recovery
Multi V M
Note
1. The combination ratio is defined as the sum of indoor unit nominal capacity (kW) divided by the outdoor rated cooling capacity (kW).
2. LG guarantees the operation only within a maximum combination ratio of 130%.
3. If the client wants to go beyond 130%, please contact the local subsidiary and discuss the requirements. Please be aware that going over 130% may
result in poor performance. If the total operating ratio of indoor unit exceeds 130%, the indoor unit is operated in low fan speed mode.
4. In case of 1:1 installation (i.e. one outdoor unit with one indoor unit), combination ratio cannot be exceed 105%.
5. For systems where special indoor units are involved, please refer to "Table. Combination Ratio for System with Special Indoor Units" in indoor unit PDB.
■ INDOOR UNIT CAPACITY INDEX
Unit
Capacity
5k 7k
(Btu/h)
Capacity
1.6 2.2
Index
* Capacity Index is same as the capacity(kW).
Number of Outdoor Units
Tropical
Multi V M
9k 12k 15k 18k 21k 24k 28k 30k 36k 42k 48k 54k 60k 76k 96k
2.8 3.6 4.5 5.6 6.2
Single Unit
Two Units
Three or Four Units
Single Unit ~ Three Units
Single Unit
Single Unit
Single Unit
Two Units
Three or Four Units
Single Unit
7.1 8.2 9.0 10.6 12.3 14.1 15.8 17.5 22.4 28.0
General Information
Total Combination ratio
50 ~ 200 %
50 ~ 160 %
50 ~ 130 %
50 ~ 130 %
50 ~ 160 %
50 ~ 130 %
50 ~ 200 %
50 ~ 160 %
50 ~ 130 %
50 ~ 130 %
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