Multi F Engineering Manual

System Combined With
Rated Cooling
Capacity (Btu/h)
EER
(95°F)
SEER
Rated Heating
Capacity (Btu/h)
COP
(47°F)
HSPF
Low Heating
Capacity (Btu/h)
COP
(17°F)
LMU541HV
Non-Ducted
Indoor Units
50,500 12.6 20.6 58,000 3.35 10.0 37,200 2.47
Ducted Indoor Units 50,500 12.5 18.5 58,000 3.27 10.0 37,200 2.42
Mixed Non-Ducted and
Ducted Indoor Units
50,500 12.6 19.6 58,000 3.31 10.0 37,200 2.44
1
Capacity is rated 0 ft. above sea level, with a 0 ft. level difference between ODU and IDUs, and the following refrigerant pipe lengths:
LMU481 / 541 / 601HV: 16.4 ft. Main + (16.4 ft. Branch x 8) = 147.6 ft.
All capacities are net with a combination ratio between 95 – 105%.
Rated cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF wet bulb (WB) and outdoor ambient conditions
of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
Rated heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet bulb (WB) and outdoor ambient conditions
of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
2
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values.
Table 21: /08+9 (I¿FLHQF\ 5DWLQJV
1,2
General Data / Electrical Data
MULTI F MAX OUTDOOR UNIT
System Combined With
Rated Cooling
Capacity (Btu/h)
EER
(95°F)
SEER
Rated Heating
Capacity (Btu/h)
COP
(47°F)
HSPF
Low Heating
Capacity (Btu/h)
COP
(17°F)
LMU481HV
Non-Ducted
Indoor Units
48,000 12.8 20.8 54,000 4.87 10.5 33,800 2.50
Ducted Indoor Units 48,000 12.6 19.0 54,000 4.51 10.5 33,800 2.45
Mixed Non-Ducted and
Ducted Indoor Units
48,000 12.7 19.9 54,000 4.68 10.5 33,800 2.47
Table 23: /08+9 (I¿FLHQF\ 5DWLQJV
1,2
At least two indoor units must be connected. For allocated capacity information, see the combination tables in the "Multi F / Multi F MAX Combina-
tion Data Manual" on www.lghvac.com. For performance data, see "Multi F / Multi F MAX Performance Data Manual" on www.lghvac.com.
System Combined With
Rated Cooling
Capacity (Btu/h)
EER
(95°F)
SEER
Rated Heating
Capacity (Btu/h)
COP
(47°F)
HSPF
Low Heating Ca-
pacity (Btu/h)
COP
(17°F)
LMU601HV
Non-Ducted
Indoor Units
60,000 11.3 20.5 64,000 3.45 11.0 42,000 2.55
Ducted Indoor Units 60,000 11.0 18.5 64,000 3.33 10.5 42,000 2.50
Mixed Non-Ducted and
Ducted Indoor Units
60,000 11.2 19.5 64,000 3.39 10.8 42,000 2.52
Table 24: /08+9 (I¿FLHQF\ 5DWLQJV
1,2
Nominal
Tons
Unit Model
No.
Phase Hertz Voltage
Voltage
Range
(Min. to Max.)
MCA MOP
Compressor
Quantity
Compressor
Motor RLA
Outdoor Unit Fan Motor(s)
Indoor Unit
Fan Motor
kW x Qty. FLA x Qty. FLA
4.0 LMU481HV
1 60 208 -230 187 - 253
32.7 40 1 22.0 2 x 0.12 1.60 x 2 4.0
4.5 LMU541HV 32.7 40 1 22.0 2 x 0.12 1.60 x 2 4.8
5.0 LMU601HV 32.7 40 1 22.0 2 x 0.12 1.60 x 2 5.2
Table 22: LMU481HV, LMU541HV, and LMU601HV Electrical Data.
Electrical Data
Voltage tolerance is ±10%.
Maximum allowable voltage unbalance is 2%.
MCA = Minimum Circuit Ampacity.
Maximum Overcurrent Protection (MOP) is calculated as follows:
(Largest motor FLA x 2.25) + (Sum of other motor FLA) rounded
down to the nearest standard fuse size.
RLA = Rated Load Amps.
FLA = Full Load Amps.
Indoor Fan Motor (FLA) is based on the max. combination of IDUs.
MULTI F MAX OUTDOOR UNIT | 33
Multi F MAX Outdoor Unit Data
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