Max Combination Capacity - LG A3UW186FA3 Installation Manual

Max Combination Capacity

Multi Piping Type
Capacity
Max Room No.
(kBtu/h)
18
21
24
27
30
40
Distributor Type
Capacity
Phase
(kBtu/h)
40
1Ø 48
56
42
3Ø 48
54
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
Combination Indoor Capacity
3 5, 7, 9, 12
3 5, 7, 9, 12, 18
4 5, 7, 9, 12, 18, 24
4 5, 7, 9, 12, 18, 24
5 5, 7, 9, 12, 18, 24
5 5, 7, 9, 12, 18, 24
Max Room No.
7
8
9
7
8
9
(kBtu/h)
Combination Indoor
Capacity (kBtu/h)
5, 7, 9, 12, 18, 24
5, 7, 9, 12, 18, 24
5, 7, 9, 12, 18, 24
5, 7, 9, 12, 18, 24
5, 7, 9, 12, 18, 24
5, 7, 9, 12, 18, 24
Max Combination Capacity
Max Combination Capacity
(kBtu/h)
30
33
39
41
48
52
Combination Capacity
Range (kBtu/h)
16~52
19~63
23~73
16~54
19~63
23~73
Installation Manual 35