LG Tri-Zone Multi F - Acoustic Data

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MULTI F MAX OUTDOOR UNIT
Acoustic Data
Model No.
Sound Pressure Levels (dB[A])
Cooling Heating
LMU480HV 54 56
LMU540HV 54 56
LMU600HV 56 58
Figure 27: Sound Pressure Level Measurement Location.
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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 pressure levels are measured in dB(A) ±3.
• Tested in anechoic chamber per ISO Standard 3745.
3.3'
4.92'
Side View
Figure 28: Sound Pressure Diagrams.
Table 28: Sound Pressure Levels (dB[A]).
LMU480HV, 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
▲
LMU600HV
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42 | MULTI F MAX OUTDOOR UNIT
Multi F and Multi F MAX Heat Pump System Engineering Manual
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