TECHNICAL MANUAL - Ferroli

NOISE LEVELS
The noise levels refer to units operating in the nominal conditions (water temperature: inlet: 12°C - outlet: 7°C, Outdoor air temperature 35°C).
The acoustic pressure levels are measured 1/ 5 / 10 meters away from the outer surface of the unit operating in the free field and resting on a
reflecting surface (directional factor of 2).
SWL = Sound power levels, with reference to 2x10 -12 W.
The Total sound power level in dB(A) measured in compliance with ISO 9614 standards, is certified according to the Eurovent certification program.
Eurovent certification (E) exclusively refers to the Total Sound Power in db(A), which is therefore the only binding acoustic specification (the values of the Octave
bands in the table are indicative).
SPL = Sound pressure levels, with reference to 2x10 -5 Pa.
The sound pressure levels are values calculated by applying the ISO-3744 relation (Eurovent 8/1) and refer to a distance of 1 meter away from the external surface
of units operating in the open field with directivity factor 2 and the units operating in nominal conditions in the cooling mode.
AB
Basic Version
SWL (dB)
Mod.
Octave bands (Hz)
Total
SPL (dBA)
63 125 250 500 1000 2000 4000 8000 dB dB(A) 1m 5m 10m
330.2 100 99 94 91 94 92 86 79 104 98 78 71 66
370.2 101 99 95 92 94 93 85 80 105 98 78 71 66
420.2 101 100 94 92 94 93 86 80 105 98 78 71 66
470.2 101 100 95 92 94 93 87 80 105 98 78 71 66
510.2 102 100 96 94 96 94 88 80 106 100 79 72 67
590.2 102 100 96 94 96 94 88 80 106 100 79 72 67
670.2 102 100 97 95 96 94 88 80 106 100 79 72 67
740.2 103 101 97 96 97 95 89 81 107 101 80 73 69
800.2 104 102 97 96 97 95 89 82 107 101 80 73 69
900.2 104 102 97 96 98 96 90 83 108 102 81 74 69
1000.2 104 102 98 96 99 96 90 83 108 102 81 74 69
1150.2 104 103 98 96 99 97 90 83 108 103 82 75 70
AS
Low noise version
SWL (dB)
Mod.
Octave bands (Hz)
Total
SPL (dBA)
63 125 250 500 1000 2000 4000 8000 dB dB(A) 1m 5m 10m
330.2 99 97 92 90 89 83 77 72 102 93 73 65 61
370.2 100 97 92 90 89 83 77 72 103 93 73 65 61
420.2 100 98 93 90 90 83 78 73 103 93 73 65 61
470.2 100 97 93 91 89 83 78 73 103 93 73 65 61
510.2 101 98 93 91 90 84 78 73 103 94 74 67 62
590.2 101 99 94 91 91 85 79 73 104 94 74 67 62
670.2 101 99 93 91 91 85 79 73 104 94 74 67 62
740.2 102 99 95 93 92 85 80 75 105 96 75 68 63
800.2 102 100 96 93 93 86 80 75 105 96 75 68 63
900.2 102 100 97 94 94 88 81 76 106 97 75 69 64
1000.2 102 100 97 95 94 88 81 75 106 97 75 69 64
1150.2 102 101 98 95 94 88 81 76 106 98 76 69 65
ASS Extra low noise version
SWL (dB)
Mod.
Octave bands (Hz)
Total
SPL (dBA)
63 125 250 500 1000 2000 4000 8000 dB dB(A) 1m 5m 10m
330.2 95 87 87 85 81 76 72 73 97 87 67 59 55
370.2 96 87 87 86 82 76 73 74 97 87 67 59 55
420.2 96 87 87 86 82 77 73 74 97 87 67 59 55
470.2 96 87 87 86 82 78 74 75 97 87 67 59 55
510.2 97 88 87 86 83 79 75 75 98 88 68 61 56
590.2 98 89 88 87 83 79 75 75 99 88 68 61 56
670.2 98 89 89 87 85 80 76 76 99 90 69 62 57
740.2 98 89 90 88 87 81 76 76 100 91 69 63 58
800.2 99 90 91 89 87 81 75 76 101 91 69 63 58
900.2 99 90 91 89 88 82 77 76 101 92 70 63 59
1000.2 100 91 91 90 88 82 78 77 102 92 70 63 59
1150.2 101 91 92 91 89 83 80 77 103 93 71 65 60
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