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		20	30	45	60	75	90	105	120	135	149
Medium frequency of the octave band Hz	63	55	58	62	67	70	72	74	79	79	82
	125	48	57	64	65	68	71	74	76	78	78
	250	43	51	59	69	69	78	77	74	76	77
	500	37	46	53	59	62	66	82	85	84	81
	1000	29	39	47	53	58	61	65	69	71	72
	2000	18	28	40	48	54	58	62	65	67	69
	4000	17	18	25	35	42	47	52	56	59	61
	8000	22	22	22	26	33	40	44	49	52	54
L_W´ dB		56	61	67	72	74	80	85	87	87	86
L_WA´ dB(A)		39	48	55	63	65	71	80	83	82	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		20	30	45	60	75	90	105	120	135	149
Medium frequency of the octave band Hz	63	47	48	53	57	63	68	72	75	79	80
	125	41	43	50	52	55	58	61	63	65	66
	250	29	38	42	54	54	54	59	60	62	64
	500	21	23	26	32	36	40	47	48	50	58
	1000	13	15	21	27	31	35	38	43	45	46
	2000	13	13	14	18	23	28	32	35	38	40
	4000	16	16	16	17	17	19	22	26	30	32
	8000	22	22	22	22	22	22	22	23	24	26
L_W´ dB		48	50	55	60	64	69	73	75	79	80
L_WA´ dB(A)		29	33	37	46	47	49	53	55	58	60

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	20	30	45	60	75	90	105	120	135	149
L_pA, dB (A)	21	27	28	38	40	41	44	46	47	49

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