LG LC187HV, Инструкция по эксплуатации, Страница: 16 / 76

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16 | Four-Way caSSette
Four-W
ay Ceiling Cassette System Engineering Manual
4.9 ft.
Ceiling
Microphone
Figure 8: Indoor Unit Sound Pressure Level Measurement Location. • 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 power levels are measured in dB(A)±3.
• Tested in anechoic chamber per ISO Standard 3745.
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
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
LCN187HV, LCN247HV LCN367HV, LCN427HV
Figure 9: Four-Way Ceiling Cassette Indoor Unit Sound Pressure Level Diagrams.
Table 5: Four-Way Ceiling Cassette Indoor Unit Sound Pressure Levels
(dB[A]).
Model
Sound Pressure Levels (dB[A])
H M L
LCN187HV 38 36 34
LCN247HV 38 36 34
LCN367HV 46 44 43
LCN427HV 46 44 43
aCouStiC Data
Indoor units