Instructions for Lindab models including: CBA Perforated Diffuser, CBA, Perforated Diffuser
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Document Documentlindab | we simplify construction Perforated diffuser - semicircular CBA Dimension D/2 + 10 A ØD H Description Comdif CBA is a semicircular perforated displacement diffuser for installation against/on a wall or column. Behind the perforated front plate, CBA is equipped with individually adjustable nozzles, making it possible to alter the geometry of the near zone. The diffuser can be turned and has a circular duct connection (MF measure), so the diffuser can be connected at the top or bottom. The diffuser is suitable for the supply of large volumes of moderately cooled air. · The diffuser is suitable for the supply of large volumes of air. · The geometry of the near zone can be adjusted using adjustable nozzles. · Duct covers, plinths and wall brackets can be supplied as accessories. Maintenance The front plate can be removed from the diffuser, making it possible to clean the nozzles. The visible parts of the diffuser can be wiped with a damp cloth. A/2 Size 1207 1607 2010 2510 3115 4020 5020 ØAA [mm] 350 420 500 600 730 900 1100 ØD [mm] 125 160 200 250 315 400 500 H [mm] 710 710 970 970 1490 2010 2010 Weight [kg] 6,.50 7,.50 13,.0 18,.0 35,.0 58,.0 78,.0 Accessories Can be supplied with duct cover, plinth and bracket for wall mounting. Ordering example Product Type Size CBA Order - accessories Cover: Plinth: Wall bracket: CBAZ - 0 - size CBAZ - 2 - size CBAZ - 3 - size aaaa Materials and finish Diffuser: Nozzles: Front plate: Standard finish: Standard colour: Galvanised steel Black plastic 1 mm galvanised steel Powder-coated RAL 9003 or RAL 9010 - white, gloss 30. The diffuser is available in other colours. Please contact Lindab's sales department for further information. Lindab reserves the right to make changes without prior notice 1 2020-10-06 lindab | we simplify construction Perforated diffuser - semicircular CBA Technical data pt [Pa] CBA 150 100 70 50 1207 1607 30 20 15 10 7 5 3 2 30 40 50 70 100 150 200 300 150 200 300 500 700 1000 0.5 1 2 3 4 5 2010 2510 3115 4020 5020 60 55 50 45 40 35 30 25 20 LWA dB(A) 500 700 1000 qV [l/s] 2000 2000 3000 qV [m3/h] 5000 7000 a0.2 [m] 2 3 4 7 10 b0.2 [m] 15 Recommended maximum volume flow. The near zone is given at an under-temperature of -3 K to a maximum terminal velocity of 0.20 m/s. Conversion to other terminal velocities - see table 1, correction of the near zone for -3 K and -6 K respectively. Nearzone Large diffusion (factory setting) h v vmax Small diffusion b0,2 2 × a0,2 Sound effect level Sound effect level LW [dB] = LWA + Kok Size 1207 1607 2010 2510 3115 4020 5020 Centre frequency Hz 63 125 250 500 1K 2K 4K 8K 8 -3 0 1 -8 -15 -27 -38 10 -3 3 0 -8 -18 -30 -33 15 -2 3 0 -9 -16 -30 -37 10 -1 4 -1 -9 -16 -29 -41 11 1 4 -1 -8 -17 -30 -42 13 3 4 -1 -9 -17 -30 -43 7 2 2 0 -6 -16 -19 -17 Sound attenuation Sound attenuation L [dB] including end reflection. Size 1207 1607 2010 2510 3115 4020 5020 Centre frequency Hz 63 125 250 500 1K 2K 4K 8K 19 14 5 3 2 1 2 1 16 12 4 1 2 1 2 2 12 8 4 2 3 2 2 2 12 8 5 2 1 1 1 1 11 8 3 2 1 1 2 2 9 6 1 1 1 1 1 1 7 5 0 1 1 1 1 2 a0,2 2 × a0,2 Table 1 Correction of the near zone (a0.2, b0.2) UUnnddeerr-tteemmppeerraattuurree TTii -- TTrr --KK33 --66KK MMaaxxiimmuumm vveelloocciittyy mm//ss 00,.2200 00,.2255 00,.3300 00,.3355 00,.4400 00,.2200 00,.2255 00,.3300 00,.3355 00,.4400 MMeeaann vveelloocciittyy mm//ss 00,.1100 00,.1122 00,.1155 00,.1177 00,.2200 00,.1100 00,.1122 00,.1155 00,.1177 00,.2200 CCoorrrreeccttiioonn ffaaccttoorr 11,.0000 00,.8800 00,.7700 00,.6600 00,.5500 11,.2200 11,.0000 00,.8800 00,.7700 00,.6600 2 Lindab reserves the right to make changes without prior notice 2020-10-06Adobe PDF Library 15.0 Adobe InDesign 15.1 (Windows)
