Engineering Manual

• Measurement taken 2.6′ below the bottom of the unit 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 power levels are measured in dB(A)±3.
• Tested in anechoic chamber per ISO Standard 3745.
2.6 ft.
3.3 ft.
Microphone
Octave Band Center Frequency (Hz)
Sound Pressure Level (0 dB = 20 µPa)
Octave Band Center Frequency (Hz)
Sound Pressure Level (0 dB = 20 µPa)
Octave Band Center Frequency (Hz)
Sound Pressure Level (0 dB = 20 µPa)
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
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
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
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
LMAN097HVT LMAN127HVT LMAN187HVT
Model No.
Sound Pressure Levels (dB[A]) (Cooling and Heating)
High Fan Speed
Medium Fan
Speed
Low Fan Speed
LMAN097HVT 33 30 27
LMAN127HVT 39 36 31
LMAN187HVT 37 33 28
Figure 4: Sound Pressure Level Measurement Location.
Table 16: Sound Pressure Levels (dB[A]).
Figure 5: Sound Pressure Level Diagrams.
ART COOL MIRROR INDOOR UNITS
Acoustic Data
ART COOL MIRROR | 23
Art Cool Mirror™
Due to our policy of continuous product innovation, some specications may change without notication.
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