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		10	20	30	40	50	60	70	80	95
Medium frequency of the octave band Hz	63	62	63	67	69	73	81	80	83	82
	125	53	54	58	61	63	66	68	69	70
	250	52	54	61	64	66	68	70	72	72
	500	45	49	55	60	63	67	72	72	72
	1000	37	42	49	55	58	62	65	68	69
	2000	25	31	41	48	53	57	60	63	64
	4000	18	21	32	40	45	50	54	57	58
	8000	22	22	23	28	35	41	46	50	51
L_W´ dB		63	64	69	71	75	82	81	84	84
L_WA´ dB(A)		47	50	57	61	64	68	72	73	74

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		10	20	30	40	50	60	70	80	95
Medium frequency of the octave band Hz	63	55	56	56	63	69	74	78	82	83
	125	41	46	47	51	54	57	61	66	68
	250	32	35	43	48	50	51	54	56	58
	500	23	26	32	37	42	46	49	51	52
	1000	16	21	27	32	37	40	43	46	48
	2000	13	13	17	23	28	32	35	39	41
	4000	16	16	17	17	19	22	26	29	32
	8000	21	22	21	22	22	22	22	23	25
L_W´ dB		55	57	57	64	69	74	78	82	83
L_WA´ dB(A)		32	35	38	43	47	51	55	58	59

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	10	20	30	40	50	60	70	80	90	95
L_pA, dB (A)	22	26	27	30	34	37	39	42	43	42

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