Circular air diffuser RFD

squareceilingduct

Circular and square ceiling swirl diffusers Nominal sizes 5, 6, 8, 10, 12, 16 in Diffuser face made of galvanised sheet steel, powder-coated, or of aluminium (depending on variant) For supply and extract air For variable and constant volume flows For all types of ceiling systems With discharge nozzle ideal for cooling in case of freely suspended installation High induction results in a rapid reduction of the temperature difference and airflow velocity Air change rates of up to 35 per hour can be achieved by arranging several diffusers in a row with a minimum pitch of 3 ft (center line to center line) Ideal for comfort zones Exposed diffuser face available in RAL CLASSIC colors Horizontal or vertical duct connection Plenum box with cord-operated damper blade and pressure tap Shallow plenum box 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 RFD ceiling swirl diffusers have fixed blades. Air discharge is horizontal omni directional. The supply air to room air temperature difference may range from –12 to +10 K. A damper blade (optional) simplifies volume flow rate balancing for commissioning. Pressure tap and cord-operated damper blade (optional) allow for volume flow rate balancing with the diffuser face in place.