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Multi F Engineering Manual

ManualsBrandsLG ManualsAir ConditionersLG Two Zone 18000 Total BTU - 22.0 SEER - 208/230 Volt Energy Star Mini Split Package with (1) 15000 BTU Wall Unit and (1) 7000 BTU Wall Unit
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Table Of Contents
MULTI F OUTDOOR UNIT | 27
Multi F Outdoor Unit Data
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• 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)±1.
• Tested in anechoic chamber per ISO Standard 3745.
Model No.
Sound Pressure Level (dB[A])
Cooling Heating
LMU183HV 49 54
LMU243HV 50 54
LMU303HV 51 54
LMU363HV 51 54
4.9 feet
3.3 feet
Microphone
Figure 14: Acoustic Measurement Location.
Figure 15: Sound Pressure Level Diagrams.
Table 18: Sound Pressure Levels (dB[A]).
Sound Pressure Levels
LMU243HVLMU183HV LMU303HV
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
63 125 250 500 1000 2000 4000 8000
Octave Band Sound Pressure Level (0dB = 20ȝ3D )
NC-15
Octave Band Center Frequency (Hz)
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Hearing
Approximate
Threshold
Cooling
Heating
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
63 125 250 500 1000 2000 4000 8000
Octave Band Sound Pressure Level (0dB = 20ȝ3D )
NC-15
Octave Band Center Frequency (Hz)
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Cooling
Threshold
Heating
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
63 125 250 500 1000 2000 4000 8000
NC-15
NC-20
Octave Band Sound Pressure Level (dB = 20ȝPa )
NC-25
NC-30
Octave Band Center Frequency (Hz)
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Hearing
Approximate
Threshold
Cooling
Heating
LMU363HV
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
63 125 250 500 1000 2000 4000 8000
NC-15
NC-20
Octave Band Sound Pressure Level (dB = 20ȝPa )
NC-25
NC-30
Octave Band Center Frequency (Hz)
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Hearing
Approximate
Threshold
Cooling
Heating