Multi F Outdoor Unit Engineering Manual
Table Of Contents
Nominal
Tons
Unit Model No. Hertz Voltage
Voltage
Range
(Min. to Max.)
MCA MOP
Compressor
Quantity
Compressor
Motor RLA
Condenser Fan Motor(s)
Condenser Fan
Quantity x kW
Condenser Fan
Motor FLA
4.5 LMU540HV 60 208 - 230 187 - 253 26.4 40 1 18.5 2 x 0.12 1.25 x 2
Voltage tolerance is ±10%.
Maximum allowable voltage unbalance is 2%.
RLA = Rated Load Amps.
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.
Table 151: LMU540HV Electrical Data.
Electrical Data
Electrical and Acoustic Data
MULTI F MAX OUTDOOR UNIT
Acoustic Data
Model No.
Sound Pressure Levels (dB[A])
Cooling Heating
LMU540HV 54 56
Figure 21: Sound Pressure Level Measurement Location.
•Measurementtaken4.92′abovefinishedfloor,andatadistanceof
3.3′fromfaceofunit.
•Measurements taken with no attenuation and units operating at full
load normal operating condition.
•Sound level will vary depending on a range of factors such as
construction (acoustic absorption coefficient) of particular area in
which the equipment is installed.
•Sound pressure levels are measured in dB(A) ±3.
•Tested in anechoic chamber per ISO Standard 3745.
3.3'
4.92'
Side View
Figure 22: Sound Pressure Diagram.
Table 152: Sound Pressure Levels (dB[A]).
LMU540HV
Octave Band Center Frequency (Hz)
Octave Band Sound Pressure Level (0dB = 20μPa )
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
Cooling
Heating
▲
MULTI F MAX OUTDOOR UNIT | 165
Multi F MAX Outdoor Unit Data
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
MULTI
F
MAX
MULTI
F