Features

Centrifugal roof fan with vertical discharge, with efficiency optimized aluminium casing and new developed high performance centrifugal impeller Casing from seawater-resistant aluminium with integrated protection guard. Motor support and base plate with inlet cone from galvanised steel. Base plate with threaded bolts for connection of intake air accessories (hole pattern to DIN 24155, page 3). Bird guard according to DIN EN ISO 13857 on the outlet as standard. High efficiency backward curved centrifugal impeller made from polymers. Dynamically balanced to DIN ISO 1940-1. Energy-saving, speed-controllable EC external rotor motor in enclosed design in IP 54 with highest efficiencies. Ball bearing with moisture protection insulation. Maintenance-free and radio interference-free. Integrated electronic temperature monitoring for EC motor and electronics. As standard with external terminal box, an external isolation switch protection class IP 65 and an internal potentiometer for setting the control voltage and thus any fan speed between min. and max. speed. Stepless speed control with external potentiometer or stepless speed control with universal control system.