Roof Fan - RDA 21-2225-EC-SE

Radial roof fan with pressure control

with swirl free horizontal directed discharge for gas medium up to app. +40 °C. Stylish casing and base frame with intake nozzle made of galvanised steel sheet Flange connection at intake acc. to DIN 24155-2 Discharge outlets protected from the weather with an aerodynamically shaped grille. High performance centrifugal impeller with backward curved blades, mounted on the rotor of a variable speed external EC-motor, protected to IP 44, totally maintenance free. Performance data in according DIN 24166  tolerance class 2 (BS 848 Class "B"). With isolator and digital pressure control unit ERA 05-0500-5E, pressure range 0 to 500 Pa. Simplified, menu-driven parameterisation, wired and ready for connection. Possible operating modes: Day-/night operation, Analog interface 0-10V, internal operation monitor, standardised measured value output. Meets the efficiency requirements of Regulation EU1253/2014 for ventilation units.