Overflow unit lindab | we simplify construction OLC Technical data Capacity Air flow rate q v [l/s] and [m 3 /h], total pressure loss Δ p t [Pa] and sound power level L WA [dB(A)] are specified for a OLC unit on both sides of the wall. Dimensioning diagram ∆ p t [Pa] OLC 100 70 50 30 20 15 10 7 5 15 20 60 70 100 125 160 50 45 40 35 30 25 20 30 40 100 50 200 70 100 300 L WA dB(A) 150 500 q [l/s] 200 V q [m 3 /h] 700 V Element-normalised reduction figure D n,e Weighted value (D n,e,w ) evaluated according to ISO 717-1 Cavity wall with 95 mm insulation Size [mm] 100 125 160 Centre frequency [Hz] 125 250 500 1K 2K 32 46 46 48 54 34 43 43 46 51 34 40 40 44 50 *D n,e,w 49 47 44 Cavity wall with 70 mm insulation Size [mm] Centre frequency [Hz] 125 250 500 1K 2K 100 30 40 38 42 50 125 30 37 37 42 49 160 30 34 34 40 50 *D n,e,w 43 43 41 Solid wall without insulation Size [mm] Centre frequency [Hz] 125 250 500 1K 2K 100 24 24 23 32 40 125 23 24 23 33 40 160 24 24 23 32 39 *D n,e,w 31 31 30 Lindab reserves the right to make changes without prior notice 3 2021-03-11
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