Circular air diffuser VDL

ceilinginduction

Circular ceiling swirl diffusers, with manual or motorised adjustment of the air pattern to ensure draught-free ventilation of the occupied zone both in heating and cooling modes Nominal sizes 315, 400, 630, 800 Diffuser face made of galvanised, powder-coated sheet steel and of aluminium For supply air For variable and constant volume flows High induction results in a rapid reduction of the temperature difference and airflow velocity Discharge direction can be adjusted manually or with an actuator Diffuser face with aerodynamically optimised contours Ideal for high rooms Exposed diffuser face available in RAL CLASSIC colours Horizontal or vertical duct connection An extended border improves the horizontal air discharge in cooling mode Protective cage for use in gymnasiums Actuators for adjusting the air discharge direction Diffuser face can be removed from the room side Ceiling swirl diffusers in air conditioning systems create a swirl to supply air to rooms. The resulting airflow induces high levels of room air, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and room air. Ceiling swirl diffusers allow for large volume flow rates. The result is a mixed flow ventilation in comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone. Type VDL ceiling swirl diffusers have adjustable air control blades. Different air patterns allow for cooling or heating mode, or for the adjustment to varying loads. Horizontal air discharge is omni directional. Vertical air discharge is possible in heating mode. The supply air to room air temperature difference may range from –12 to +15 K.