Engineering Manual

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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 power levels are measured in dB(A)±3.
• Tested in anechoic chamber per ISO Standard 3745.
2.6 ft.
3.3 ft.
Microphone
Model No.
Sound Pressure Levels (dB[A]) (Cooling and Heating)
High Fan Speed
Medium Fan
Speed
Low Fan Speed
LAN090HSV4 33 30 27
LAN120HSV4 39 36 31
LAN180HSV4 37 33 28
Figure 4: Sound Pressure Level Measurement Location.
Table 7: Sound Pressure Levels (dB[A]).
Figure 5: Sound Pressure Level Diagrams.
ART COOL MIRROR INDOOR UNITS
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Octave Band Center Frequency (Hz)
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Octave Band Center Frequency (Hz)
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Octave Band Center Frequency (Hz)
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10
20
30
40
50
60
70
80
0008 0004 0002 0001 005 05226361 3
10
20
30
40
50
60
70
80
0008 0004 0002 0001 005 05221 3636
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
10
20
30
40
50
60
70
80
0008 0004 0002 0001 005 05221 3636
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
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
LAN090HSV4 LAN120HSV4 LAN180HSV4
ART COOL MIRROR | 17
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MAX
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