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 L_w, dB Adjustment position
Adjustment position (%)		10	20	30	40	50	60	70	80	100
Air flow dm³/s		15	24	34	42	51	62	69	77	83
Air flow m³/h		54	86	122	151	184	223	248	277	299
Medium frequency of the octave band Hz	63	62	64	69	73	77	82	84	87	88
	125	53	63	65	65	67	71	74	76	78
	250	48	56	60	65	70	71	73	75	75
	500	43	49	56	60	64	67	69	71	73
	1000	35	43	49	53	56	61	64	65	67
	2000	25	36	44	49	52	56	58	61	62
	4000	18	23	32	38	43	48	51	54	55
	8000	21	22	29	37	43	49	52	55	57
L_W, dB		63	67	71	74	78	83	85	88	88
L_WA, dB (A)		43	53	57	61	65	68	71	72	74

Table 2. Sound power level in the extract air duct
Sound power level in the extract air duct (one duct) by octave band L_w, dB Adjustment position
Adjustment position (%)		10	20	30	40	50	60	70	80	100
Air flow dm³/s		23	31	41	50	60	70	78	86	92
Air flow m³/h		83	112	148	180	216	252	281	310	331
Medium frequency of the octave band Hz	63	54	55	62	66	69	75	78	79	80
	125	46	50	53	56	59	62	65	67	68
	250	39	45	51	55	60	59	61	62	64
	500	29	35	40	44	47	50	55	54	56
	1000	16	24	30	34	37	40	43	46	46
	2000	13	17	23	28	32	36	38	41	42
	4000	17	17	18	20	24	28	30	33	35
	8000	21	21	21	21	22	23	25	28	29
L_W, dB		54	57	63	66	70	75	78	79	80
L_WA, dB (A)		35	40	45	49	53	55	58	59	60

Table 3. Sound pressure level (A)
Sound pressure level coming through the envelope of the unit in the room in which it is installed (10 m² sound absorption) Adjustment position / Air flows (supply/extract)
Adjustment position (%)	10	20	30	40	50	60	70	80	100
Air flow dm³/s	15/20	24/30	33/40	42/48	52/58	61/68	70/76	78/84	83/89
Air flow m³/h	54/72	86/108	119/144	151/173	187/209	220/245	252/274	281/302	299/320
L_pA, dB (A)	22	27	32	35	38	43	44	46	47