Disc circular diffuser CIRCLE LINE Description Disc diffuser for ceiling installation. The position of the main disc, which is adjustable in steps, determines the geometry of the launch : when it “protrudes” in relation to the body of the diffuser, the launcgh is horizontal radial with coanda effect (suitable for cooling), when it is “embedded”, the launch is vertical (suitable for heating). Inside a intermediate height adjustable disc (screw adjustment) acts as a damper. Characterized by a simple and elegant design, it is tipically used in civil environments for office conditioning, shops, hospital structures snd exibition spaces. Construction painted Natural aluminum (body), painted galvanized steel (disc). Finish White RAL 9010 gloss, powder-coated polyester type. X02 isothermal horizontal throw (isotachia 0.2 m / s) Lwa sound power level (rif. 10-12 W) Accessories PLSC : Standard plenum with lateral inlet. PLIC : insulated* plenum with lateral inlet. * polyurethane internal isolation thickness. 6 mm, cl.1 Specifications Adjustable disc circular diffuser for ceiling installation. Radial horizontal or vertical launch. Steel and aluminum painted white RAL 9010. 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]

Disc circular diffuser CIRCLE LINE Key to symbols h. installation height d distance between the center of the diffuser and the wall to which the jet flows qv airflow per diffuser X02 horizontal isothermal free throw (isotachia 0,2 m/s) At temperature difference (air input - environment setpoint) AP pressure drop Lwa A-weighted sound power level “A” (rif. 10-12 W) Notes The value of d was calculated in relation to X02 and h. to maintain residual velocity in the occupied area within the limit of 0,2 m/s In case of diffusion with At = -10 °C (cooling) reduce X02 of 15%, with At = 10 °C (heating)...

CIRCLE LINE Vertical launch Disc circular diffuser Airflow calculation By inserting the primary disc in the body of the diffuser (minimum slot: position 4) results in a vertical launch suitable for winter heating. The above diagram refers to the case of Dt = 10 ° C. Because of the possible asymmetry introduced by the plenum and the flexible duct, you should position the probe for measuring the speed of vk in at least 4 points equally spaced angularly. You must employ hot-wire anemometers, taking care to orient the “window” radially. You must place the probe as shown: in the middle of the slot...