Max Combination Capacity - LG A8UW54GFA0 Installation Manual

Max Combination Capacity

Max Combination Capacity
Multi Piping Type
Capacity
Max Room No.
(kBtu/h)
18
24
30
36
Distributor Type
Capacity
Phase
(kBtu/h)
1Ø 48
1Ø 54
1Ø 60
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 and VAHU type indoor unit capacity
multiplier 1.3 times in which multiplier is unless only HSD/VAHU are connected
Ex) 1. Outdoor unit : A8UW54GFA0(LMU540HV)(connectable maximum capacity is 73 kBtu)
Indoor unit:
AMNW24GBGA0[LMHN240HV], AMNW36GBGA0[LMHN360HV]
(24+36) x 1.2 = 60 x 1.2 = 72 kBtu : this combination is acceptable.
2. Out door unit: A8UW54GFA0(LMU540HV)
Indoor unit:
AMNW24GBGA0[LMHN240HV], AMNW24GBGA0[LMHN240HV], LMN078HVT
[(24+24) x 1.2] + 7 = [48 x 1.2] + 7 = 69.4 kBtu : this combination is acceptable.
3. Outdoor unit : A8UW54GFA0(LMU540HV)(connectable maximum capacity is 73 kBtu)
Indoor unit:
AMNW36GBGA0[LMHN360HV], AMNW36GBGA0[LMHN360HV]
(36+36) x 1.2 = 72 x 1.2 = 86.4 kBtu : this combination is not acceptable
54 Multi Air Conditioner
Combination Indoor Capacity
2
3 7,9,12,15,18,24
4 7,9,12,15,18,24
4 7,9,12,15,18,24
Max Room No.
8
8
8
(kBtu/h)
7,9,12,15
Combination Indoor Capacity
(kBtu/h)
7,9,12,15,18,24,36
7,9,12,15,18,24,36
7,9,12,15,18,24,36
Max Combination Capacity
(kBtu/h)
24
33
40
48
Max Combination Capacity
(kBtu/h)
65
73
83