flow rates up to 2,500 m³/h
size: 100 - 355 mm (tube diameter)
steel casing
backward curved impellers
can be used in all mounting positions
speed is 100% infinitely variable using auto transformers or electronic control
The casings are made of galvanised sheet steel.
Up to size 315L, backward curved high-performance impellers made of plastic are used, from size 355, backward curved, high-performance impellers made of aluminium are used. The impellers are mounted directly on the rotors of the external rotor motors and are dynamically balanced on two levels with the rotor according to quality level G 2,5 / G 6,3 as per DIN ISO 21940-11.
Size 100 - 250
backward curved high-performance impellers made of plastic
Size 250L - 315M
backward curved high-performance impellers made sheet steel
Size 355
backward curved high-performance impellers made of plastic
The electrical connection is made through a terminal box mounted on the casing with protection class IP54.
Rigid folded spiral-seam tubes (Spiro), flexible aluminium or plastic tubes with standardised diameter can be used. Rosenberg tube fans can be used in all mounting positions. When used over several floors of a building, the local fire safety regulations must be observed.