Sound levels
Size
Sound power level
Sound
pressure
level
Sound
Power
Level
Octave band (Hz)
63 125 250 500 1000 2000 4000 8000 dB(A) dB(A)
12.2 76 79 76 77 77 76 74 73 65 83
16.2 76 79 78 80 80 78 75 79 66 85
20.4 92 82 80 81 79 77 74 75 67 84
22.4 92 83 81 82 80 78 75 73 68 85
24.4 92 84 82 84 82 79 76 76 69 87
The sound levels are referred to unit operating at full load in nominal conditions. The sound pressure level is referred at a distance of 1 m. from the ducted unit surface operating in free eld conditions. External static pressure 50 Pa.
(standard UNI EN ISO 9614-2)
Please note that when the unit is installed in conditions dierent from nominal test conditions (e.g. near walls or obstacles in general), the sound levels may undergo substantial variations.
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