Electrical Data; Acoustic Data - LG MULTI F Series Engineering Manual
Multi-zone heat pump systems 1.5 to 4.5 tons
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- Installation manual (104 pages) ,
- Owner's manual (234 pages) ,
- Install (6 pages)
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F
MULTI
F
MULTI
MAX
Electrical Data
Table 272: Electrical Data.
Nominal
Unit Model No.
Tons
1.5
LMU18CHV
2
LMU24CHV
3
LMU36CHV
Voltage tolerance is ±10%.
Maximum allowable voltage unbalance is 2%.
RLA = Rated Load Amps.
Acoustic Data
Figure 9: Acoustic Measurement Location.
Table 273: Sound Pressure Levels (dB[A]).
Model No.
LMU18CHV
LMU24CHV
LMU36CHV
Figure 10: Sound Pressure Level Diagrams.
LMU18CHV
80
▲ Cooling
Heating
70
60
50
40
30
20
Approximate
Hearing
Threshold
10
63
125
250
500
1000
2000 4000
Octave Band Center Frequency (Hz)
Voltage
Hertz Voltage
Range
(Min. to Max.)
60
208 - 230
187 - 253
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.
Microphone
3.3 feet
4.9 feet
Sound Pressure Level (dB[A])
Cooling
Heating
49
52
49
52
52
55
LMU24CHV
80
70
NC-65
60
NC-60
NC-55
50
NC-50
NC-45
40
NC-40
NC-35
30
NC-30
NC-25
20
Approximate
NC-20
Hearing
Threshold
NC-15
10
8000
63
125
250
500
Octave Band Center Frequency (Hz)
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
MULTI F OUTDOOR UNIT
Compressor
MCA MOP
Quantity
13.3
20
1
14.3
20
1
17.9
25
1
• Measurement taken 4.9' above finished floor, and at a distance of
3.3' from face of unit.
• 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 level may be increased in static pressure mode or if air
guide is used.
• Sound pressure levels are measured in dB(A)±3.
• Tested in anechoic chamber per ISO Standard 3745.
80
▲ Cooling
Heating
70
NC-65
60
NC-60
NC-55
50
NC-50
NC-45
40
NC-40
NC-35
30
NC-30
NC-25
20
Approximate
NC-20
Hearing
Threshold
NC-15
10
1000
2000 4000
8000
63
Octave Band Center Frequency (Hz)
Electrical and Acoustic Data
Outdoor Fan Motor
Compressor
Motor RLA
kW
8.9
0.09
9.4
0.09
11.2
0.12
Indoor Fan Motor (FLA) is based on the maximum combination of
indoor units.
The max combination for each outdoor unit is:
- 18,000 ODU (LMU18CHV): 12,000 IDU x 2
- 24,000 ODU (LMU24CHV): 12,000 IDU x 2 + 9,000 IDU x 1
- 36,000 ODU (LMU36CHV): 12,000 IDU x 4
LMU36CHV
▲ Cooling
Heating
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
125
250
500
1000
2000 4000
8000
MULTI F OUTDOOR UNIT | 279
Indoor
Fan Motor
FLA
FLA
0.59
1.60
0.59
2.00
0.73
3.20
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