LG MU3M21.UE0R0 User Manual download pdf (Page 34)

34 Multi Air Conditioner

Max Combination Capacity

Multi Piping Type

14 2 5,7,9,12 22

16 2 5,7,9,12 24

18 3 5,7,9,12,18 30

21 3 5,7,9,12,18,24 33

24 4 5,7,9,12,18,24 39

27 4 5,7,9,12,18,24 41

30 5 5,7,9,12,18,24 48

40 5 5,7,9,12,18,24 52

Capacity

(kBtu/h)

Max Room No.

Combination Indoor Capacity

(kBtu/h)

Max Combination Capacity

(kBtu/h)

Distributor Type

40 7 5, 7, 9, 12, 18, 24 16~52

1Ø 48 8 5, 7, 9, 12, 18, 24 19~63

56 9 5, 7, 9, 12, 18, 24 23~73

42 7 5, 7, 9, 12, 18, 24 16~54

3Ø 48 8 5, 7, 9, 12, 18, 24 19~63

54 9 5, 7, 9, 12, 18, 24 23~73

Capacity

(kBtu/h)

Phase Max Room No.

Combination Indoor

Capacity (kBtu/h)

Combination Capacity

Range (kBtu/h)

The combination of indoor unit is to be decided that the sum of indoor unit capacity index must be

smaller than the maximum combination capacity of outdoor unit. We recommend to calculate indoor

unit capacity like below.

If you do not follow our recommendation, it will have some problems in low ambient condition i.e.

some indoor unit will not be able to heat very well in heating mode.

CALCULATION METHOD FOR THE CONNECTABLE TOTAL CAPACITY OF

INDOOR UNIT

Sum up the capacity of all indoor unit, but high static duct type indoor unit capacity weights 1.3 times

Ex) 1. Outdoor unit : A9UW566FA3(FM56AH)(connectable maximum capacity is 73kBtu)

Indoor unit: AMNH186BHA0[MB18AH],AMNH246BHA0[MB24AH],AMNH246BHA0[MB24AH]

(18 + 24 + 24) x 1.3 = 66 x 1.3 = 85.8kBtu: this combination has a some problem

2. Out door unit: FM56AH

Indoor unit: AMNH186BHA0[MB18AH],AMNH246BHA0[MB24AH],AMNH18GD5L0[MS18AH]

(18 + 24) x 1.3 + 18 + 72.6: this combination can be ok

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LG MU3M21.UE0R0 User Manual Page 34

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