lindab | air valves Valve – Supply and exhaust air AIRY Technical data Accessories 1 Capacity Blanking – of sector plate Air flow qv [l/s] and [m3/h], total pressure Δpt [Pa], throw l0.2 [m] and 2 sound power level LWA [dB(A)] can be seen in the graphs. Frequency-related sound power level The sound power level in the frequency band is defined as 3 LWA+Kok. Kok values are specified in charts beneath the graphs on the following pages. Sound attenuation 4 Sound attenuation of the diffusers ΔL from duct to room, including end reflection, see table below. Centre frequency 5 [Hz] Ød nom 63 125 250 500 1K 2K 4K 8K 100 22 18 13 11 9 8 7 8 125 20 16 11 9 9 7 6 5 6 160 18 14 10 9 9 7 6 6 Balancing 7 Balancing data is contained in a separate brochure. Blanking off sector plate 8 Correction for sound and throw When using blanking off sector in Airy calculate correction factor C and use this factor to read corrected sound- and throw data: 9 C = ((α / 360)+1) Corrected flow to use for reading data in diagrams = C × qv 10 Example AIRY-125 Sector plate α: Airflow qv: 11 Required pressure drop Δpt: 120° 20 l/s 50 pa C = ((120 / 360)+1) = 1,33 12 Corrected flow to use for reading data in diagrams = 1,33 × 20 l/s = 27 l/s 13 Corrected data: Sound power level Lwa: Slot setting for 50 pa : Throw l02 (12 mm. slot): 14 30 dB(A) 12 mm 2,6 m 15 16 Order code 17 Product AIRYB AIRYBP aaa Connection dim. Ød Ød nom = 100, 125, 160 mm 18 Example: AIRYBP - 125 24 We reserve the right to make changes without prior notice 2015-03-18
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