Airwell DAF009 - 7.4 Floor;Ceiling IDU Noise Spectra

SOUND LEVEL CHARACTERISTICS
7.4 Floor Ceiling IDU Sound Pressure Level (measured as
figure 2)
FAF012 Cooling FAF012 Heating
Noise spectrum & NC Curves
NC15
NC20
NC25
NC30
NC35
NC40
NC45
NC50
NC55
NC60
NC65
0
10
20
30
40
50
60
70
80
90
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequencies [Hz]
Octave Band Sound Pressure Level [dB re 20 mPa]
Noise spectrum & NC Curves
NC15
NC20
NC25
NC30
NC35
NC40
NC45
NC50
NC55
NC60
NC65
0
10
20
30
40
50
60
70
80
90
63 125 250 500 1000 2000 4000 8000
Octave Band Sound Pressure Level [dB re 20 mPa]
Octave Band Center Frequencies [Hz]
FAN SPEED LINE
HI
ME
LO
SM YIF 2-A.1 GB 7-9