9 - TECHNICAL INFORMATION
The values were detected in a closed environment with a
volume of 100 m
3
with a reverberation time of 0.5 seconds.
The sound levels are referred to unit operating at a full load in
nominal conditions. The sound pressure level is referred at a
distance of 1m. from the external unit surface, with fairing,
fitted to a wall. Please note that when the unit is installed in
conditions other than nominal test conditions /for example
near walls or obstacles in general) the sound levels may
undergo substantial variation.
SOUND LEVELS
Size
Sound Power Level (dB)
Sound
pressure
level
Octave band (Hz)
63 125 250 500 1000 2000 4000 8000 dB(A) dB(A)
3 51 51 47 49 48 43 37 27 39 52
5 45 45 48 50 51 45 38 28 40 53
11 51 51 48 49 50 45 38 28 39 53
15 47 47 49 48 51 44 37 28 39 53
17 52 52 50 49 52 45 39 29 43 54
Sound
power level
FAN SPEED: Low speed (L)
Size
Sound Power Level (dB)
Sound
pressure
level
Octave band (Hz)
63 125 250 500 1000 2000 4000 8000 dB(A) dB(A)
3 49 49 34 33 27 22 22 23 23 36
5 45 45 39 39 22 27 23 23 26 40
11 46 46 39 41 35 28 23 23 27 41
15 35 35 38 35 34 22 19 22 23 37
17 45 45 39 38 33 25 20 23 27 39
Sound
power level
FAN SPEED: Medium speed (M)
Size
Sound Power Level (dB)
Sound
pressure
level
Octave band (Hz)
63 125 250 500 1000 2000 4000 8000 dB(A) dB(A)
3 50 50 45 43 41 35 28 24 32 45
5 45 45 45 45 42 36 29 24 32 46
11 49 49 44 46 43 37 30 24 33 47
15 38 38 43 43 40 34 27 25 30 44
17 47 47 46 46 44 38 31 25 37 48
Sound
power level
FAN SPEED: High speed (H)