Airtight, seamed casing made from galvanised steel. Leakage rate compliant with tightness class C, according to EN 12237:2003. Duct connections min. 25 mm long.
Energy-saving, highly effi cient EC external rotor motors.
Radial impeller with backward curved blades.
100 % controllable via a 0-10 V signal. The fans are equipped with a potentiometer (0-10 V). This is installed in the terminal box and preset to a value between 6 and 10 V (factory setting). This can be easily adjusted should the installation require a different operating point.
Motor protection is integrated in the electronics of the motor.