cru.pdf

cru.pdfTheatre diffuser lindab | we simplify construction CRU Dimension B B-20 A ØD 1 A-50 200 20 Description CRU is a rectangular displacement diffuser for installa- tion under seats in theatres, auditoriums, etc. The diffuser is supplied with a circular connection. The diffuser can be supplied with a fixed resistance adapted to the correct air volume and pressure, specified according to the actual con- ditions. • Circular connection with Lindab Safe. • The diffuser can be supplied with a fixed resistance at a specified pressure setting. • The diffuser is available in other dimensions. Maintenance The front plate of the diffuser can be removed to enable cleaning of the internal components. The visible parts of the diffuser can be wiped with a damp cloth. Materials and finish Diffuser: Front plate: Standard finish: Standard colour: Galvanised steel 1 mm galvanised steel Powder-coated RAL 7040 - grey, gloss 30 RAL 9010 - white, gloss 30 The diffuser is available in other colours. Please contact Lindab’s sales department for further information. Order code Product Type CRU aaaa bbbb Colour Size RAL 7040 - grey 0 RAL 9010 - white 1 Special colour 2 Size 4010 4015 5010 5015 A mm 400 400 500 500 B mm 100 150 100 150 ØD 1 mm 80 100 80 125 Weight kg 1,40 2,00 1,70 2,50 Pressure, sound level ǻ p t [Pa] CRU 50 4010/5010 4015 40 5015 30 20 15 10 7 5 7 10 30 40 30 25 20 15 15 50 60 20 30 70 80 90 100 L WA dB(A) 40 150 q V [l/s] 50 q V [m 3 /h] Size 4010 4015 5010 5015 63 125 250 500 1K 2K 4K 8K 5 -4 -2 2 -9 -18 -30 -42 9 -2 -2 2 -10 -17 -30 -37 5 -4 -2 2 -9 -18 -30 -42 7 -6 -2 2 -11 -21 -33 -28 Near zone v [m]/s CRU 0.5 0.4 ∆ T: -3 -2 -1 0.3 0.2 0.15 0.1 0.05 1 45 v [m/ s ] q V [l/(s m)] 2 3 4 5 7 10 15 20 30 40 50 70 100 150 q V [m 3 /(h m)] 7 10 15 20 30 40 50 70 100 150 200 300 400 The speed is measured 0.5 m from the diffuser. Lindab reserves the right to make changes without prior notice 1 2020-10-13