Sound values

Table 1. Sound power level in the supply air duct
Sound power level in the supply air ducts by octave band L_W´ dB
Air flow l/s		15	30	45	60	75	90	105	119
Medium frequency of the octave band Hz	63	54	63	62	67	71	75	75	77
	125	50	56	62	65	68	76	73	75
	250	45	51	64	69	71	75	72	73
	500	37	45	54	58	62	67	76	83
	1000	33	39	47	53	57	61	66	68
	2000	19	27	40	48	53	58	61	64
	4000	17	17	25	34	41	47	51	55
	8000	21	21	22	25	31	38	43	48
L_W´ dB		56	64	68	72	75	81	81	85
L_WA´ dB(A)		41	48	57	62	65	70	75	80

Table 2. Sound power level in the extract air duct
Sound power level in the extract air ducts by octave band L_W´ dB
Air flow l/s			15	30	45	60	75	90	105	119
Medium frequency of the octave band Hz	63	49	50	53	64	64	70	73	74
	125	40	47	54	53	55	58	61	62
	250	33	36	45	56	53	55	57	58
	500	24	25	28	32	36	40	44	48
	1000	21	21	22	27	30	35	39	42
	2000	15	15	16	18	22	27	32	35
	4000	17	17	17	17	17	20	24	28
	8000	21	21	21	21	21	21	22	23
L_W´ dB			50	52	57	65	65	71	74	75
L_WA´ dB(A)			31	34	41	48	47	50	52	54

Table 3. Sound pressure level coming through the envelope
Sound pressure level coming through the envelope of the unit in the room in which it is installed (10m² sound absorption)
Air flow l/s	15	30	45	60	75	90	105	119
L_pA, dB (A)	22	27	30	33	36	41	43	44

The operating-point-specific sound values can be calculated with the Vallox MySelecta product selection program.