Sound levels
The sound pressure level refers to a distance of 1 meter from the outer surface of the unit operating in open eld.
Static pressure 50 Pa (UNI EN ISO 9614-2)
For the standard air supply the total sound power levels for the diverse values of available static pressure are shown.
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.
AIR SUPPLY MINIMUM (50 Pa)
Size
Sound power level (dB) Sound
pressure
level
Sound
power
level
Octave band (Hz)
63 125 250 500 1000 2000 4000 8000 dB(A) dB(A)
Size 1 54 52 56 59 68 69 62 70 58 74
Size 2 55 53 57 60 69 70 63 71 59 75
SIZE 3 60 58 61 64 72 73 66 74 61 79
Size 4 66 68 66 66 71 72 66 73 59 79
Size 5 67 69 67 67 72 73 67 74 60 80
Size 6 69 68 70 73 75 74 69 74 62 81
AIR SUPPLY STANDARD (50 Pa) AIR SUPPLY STANDARD (100,200,300 Pa)
Size
Sound power level (dB)
Sound
pressure
level
Sound
power
level
Octave band (Hz)
63 125 250 500 1000 2000 4000 8000 dB(A) dB(A)
Size 1 59 60 65 69 72 72 63 69 60 77
Size 2 60 61 66 70 73 73 65 70 61 78
SIZE 3 66 65 67 70 73 74 67 74 61 80
Size 4 67 69 67 67 72 73 67 74 60 80
Size 5 74 75 75 74 75 74 69 74 62 83
Size 6 74 75 77 79 78 76 71 73 64 85
Size
Sound power level (dB)
Available head (Pa)
100 200 300
Size 1 77 77 78
Size 2 78 78 79
SIZE 3 80 80 81
Size 4 80 80 81
Size 5 83 84 84
Size 6 85 85 86
MAXIMUM AIR SUPPLY (50 Pa)
Size
Sound power level (dB)
Sound
pressure
level
Sound
power
level
Octave band (Hz)
63 125 250 500 1000 2000 4000 8000 dB(A) dB(A)
Size 1 65 69 75 77 77 73 65 68 64 82
Size 2 66 70 76 78 78 74 66 69 65 83
SIZE 3 74 75 77 79 78 77 72 74 66 85
Size 4 77 78 77 76 77 77 71 75 64 85
Size 5 78 80 79 78 77 76 71 74 64 86
Size 6 77 78 80 82 81 79 74 75 67 88
Operation with constant supply temperature
T_OA = 35/24°C
T_RA = 26°C
T_SA = 24°C
X_SA = 11g/kg
T_OA = Outdoor air temperature at Dry/Wet bulb [°C]
T_OA = Exhaust air temperature at Dry bulb [°C]
T_SA = Dry bulb supply air temperature [°C]
X_SA = Supply air humidity ratio [g/kg]