Sound values

Table 1. Sound power level in the supply air duct
Sound power level in the supply air duct (one duct) by octave band LW´ dB
Adjustment position (%) 10 20 30 40 50 60 70 80 90 100
Medium frequency of the octave band Hz 63 55 66 73 76 80 83 85 86 87 87
125 50 58 64 68 72 76 80 83 84 84
250 52 57 63 65 68 72 74 77 78 78
500 41 48 53 57 61 64 67 70 71 71
1000 53 47 52 57 60 64 65 67 68 68
2000 23 34 43 48 53 58 62 64 66 66
4000 18 23 36 44 50 55 59 62 63 63
8000 21 22 28 39 47 54 58 62 63 63
LW, dB 59 68 74 77 81 84 86 88 90 89
LWA, dB(A) 53 52 58 62 66 69 72 75 76 76
Table 2. Sound power level in the extract air duct
Sound power level in the extract air duct (one duct) by octave band LW´ dB
Adjustment position (%) 10 20 30 40 50 60 70 80 90 100
Medium frequency of the octave band Hz 63 53 58 63 67 73 78 78 79 80 79
125 45 50 56 61 65 69 73 75 75 75
250 40 39 44 49 54 57 60 63 64 64
500 30 37 43 47 50 53 56 58 59 59
1000 32 33 36 41 44 48 50 52 53 53
2000 15 22 30 34 38 42 45 48 49 49
4000 17 17 19 23 27 31 35 38 39 39
8000 21 21 21 22 24 28 32 35 36 36
LW, dB 54 59 64 68 74 79 79 80 81 81
LWA, dB(A) 37 40 45 50 54 58 60 63 63 63
Table 3. Sound pressure level (A)
Sound pressure level, in decibels (A) coming through the envelope from the room in which the unit is installed (10 m2 sound absorption)
Adjustment position 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
LpA´ dB(A) 28 27 32 35 39 43 46 48 49 49