Sound values

Table 1. Sound power level in the supply air duct
Sound power level in the supply air duct by octave band LW´ dB
Adjustment position 11% 28% 44% 55% 62% 72% 80% 100%
Air flow dm3/s 10 23 35 434 49 597 65 71
Medium frequency of the octave band Hz 63 53 63 71 76 76 79 799 81
125 44 57 66 70 72 75 77 78
250 38 45 53 58 61 65 67 69
500 26 33 41 45 47 51 53 552
1000 21 34 40 44 45 48 50 52
2000 17 20 26 31 33 37 39 41
4000 19 19 20 24 26 30 32 34
8000 24 24 24 24 24 25 25 26
LW´ dB 53 64 72 77 77 80 82 83
LWA´ dB(A) 33 44 52 57 58 62 63 65
Table 2. Sound power level in the extract air duct
Sound power level in the extract air duct by octave band LW´ dB
Adjustment position 11% 28% 44% 55% 62% 72% 80% 100%
Air flow dm3/s (l/s) 11 22 35 44 48 59 64 71
Medium frequency of the octave band Hz 63 55 66 73 78 78 82 83 85
125 44 57 66 70 72 76 78 78
250 37 46 55 60 62 67 69 71
500 33 43 44 48 50 54 56 58
1000 25 34 41 44 46 49 50 52
2000 19 25 34 39 41 45 47 49
4000 19 19 24 29 32 36 38 41
8000 24 24 24 24 25 27 29 31
LW´ dB 55 66 74 79 79 83 84 86
LWA´ dB(A) 35 46 53 58 59 63 65 66
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 11% 28% 44% 55% 62% 72% 80% 100%
Air flow dm3/s 11/14 22/28 36/41 43/51 49/58 59/69 65/75 72/83
Air flow m3/h 40/49.7 80.6/100.4 128.5/149 156.2/183.2 174.6/208.4 211.3/247.7 234.7/270.0 257.4/298.1
LpA´ dB(A) 26 27 31 35 38 40 42 44