lindab | we simplify construction Plain diffuser LCS Technical data Capacity Volume flow q v [l/s] and [m 3 /h], total pressure Δ p t [Pa], throw l 0.2 [m] and sound power level L WA [dB(A)] can be seen in the diagrams. Frequency-related sound effect level The sound effect level in the frequency band is defined as L WA + K ok K ok values are given in charts beneath the diagrams on the following pages. Quick selection Supply air Size 125 160 200 250 315 Minimum P i =5 Pa l/s m 3 /h 18 65 30 108 44 158 69 248 88 317 p t =50 Pa L WA =30dB(A) l/s m 3 /h 33 119 53 191 68 245 105 378 - - p t =50 Pa L WA =35dB(A) l/s m 3 /h 42 151 63 227 84 302 132 475 181 652 Extract Size 125 160 200 250 315 Minimum P i =5Pa l/s m 3 /h 18 66 30 107 44 157 69 248 88 316 P t =50 Pa L WA = 30 dB(A) l/s m 3 /h 33 117 43 156 67 242 125 448 151 543 P t =50 Pa L WA = 35 dB(A) l/s m 3 /h 43 156 65 235 101 362 147 530 186 668 Throw l 0.2 The throw is specified at a terminal velocity of 0.2 m/s. l 0.2 [m] 6 5 LCS-2 4 125 160 200 250 315 3 2 1 20 30 80 100 40 50 60 70 80 100 150 150 200 300 400 500 l 0.2 [m] 200 700 q V [l/s] 300 q V [m 3 /h] 1000 Sound attenuation Sound attenuation of the diffusers Δ L from duct to room, including end reflection, see table below. Size 125 160 200 250 315 Centre frequency Hz 63 125 250 500 1K 2K 4K 8K 19 14 7 19 12 15 14 20 14 10 6 15 14 14 14 17 14 10 11 10 17 12 15 18 20 16 15 20 15 12 16 19 17 14 14 17 13 12 15 18 Balancing Balancing data is contained in a separate brochure. 2 Lindab reserves the right to make changes without prior notice 2020-12-16
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