Double geometry whirl square diffuser UFO-EH Description Whirl square diffuser for ceiling installation. According to the internal deflectors’ position, you can obtain two dif-ferents launch’s configurations: a whirling one not radial with Coanda effect, suitable for summer regimen and a whirling one without Coanda effect, suitable for winter regimens. The passage from one configuration to the other one is made by rotating each flap round its own axis (possible also from the environment). It is characterised by a rapid mixing, it stands out for the elegant and modern design and is commonly employed in conditioning/ ventilating systems, most of all in in civil environments. The fixing is made through central screw with cover. Construction Painted galvanised sheet-steel (plate), plastic material (deflectors). Finish Plate: painted gloss white RAL 9010. Deflectors: matt black (white on request). Accessories PLS-EHC : standard plenum with adjustable damper*. PLI-EHC : insulated plenum** with adjustable damper*. * from environment ** internal insulation in polyurethane thickness 6 mm, cl.1 Gr N — — ^ Lwa N slots number qv air-flow aP pressure drop X02 isothermic horixontal throw (isotachia 0,2 m/s) Lwa sound power level (rif. 10-12 W) Specifications High induction vortex square diffuser for ceiling installation. Double geometry exhaust for horizontal vortex launch with Coanda effect , or vertical vortex launch. Construction in galvanised sheet-steel (plate) and plastic material (defllectors). White finish RAL 9010 (plate) and black (deflectors). Fixing by central screw with cover. Plenum with adjustable damper from the environment. F.C.R. SpA - Via E. Fermi, 3 - 20092 Cinisello Balsamo (MI) - Italy phone +39 02 61798 1 - fax +39 02 61798 300 - www.fcr.it - [email protected]

F.C.R. SpA - Via E. Fermi, 3 - 20092 Cinisello Balsamo (MI) - Italy phone +39 02 61798 1 - fax +39 02 61798 300 - www.fcr.it - [email protected] Double geometry whirl square diffuser UFO-EH * external diameter Mounting scheme The diffuser UFO-EH 600/DD has been expressly designed for installation in standard false ceilings frame with panels 600x600 mm.

Double geometry whirl square diffuser UFO-EH X0,2 Free isothermic horizontal throw (isotachìa 0,2 m/s) Dt DP Temperature difference (supplied air - environment setpoint) Pressure drop LWA Sound power level weighted “A” (rif. 10-12 W) Notes The value d has been calculated according to X0,2 and hi to keep the remaining velocity in the occupied volume within the limit of 0,20 m/s. 3 According to installation height hi, from diagram 3 determine the minimum distance d between the centre of the diffuser and the wall to which the jet flows. 4 At the requested air-flow qv, from diagram 4 verify that...

Double geometry whirl square diffuser UFO-EH Air-flow calculation Due to possible asymmetries caused by plenum and flexible duct, it is necessary to position the velocity probe to measure vk in at least 4 angularly equally spaced points. You must position the probe as shown in the picture and in each point you must measure the average speed in a breaktime of at least 1 minute (average in time). In order to obtain the air-flow, calculate the arithmetic average ṽk of the so measured values. N Adjustable damper from the environment F.C.R. SpA - Via E. Fermi, 3 - 20092 Cinisello Balsamo (MI) - Italy...