EC Tube fans(EX/FNS/TB/002)

Properties

• 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

• Impellers

  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

  Electrical connection

  The electrical connection is made through a terminal box mounted on the casing with protection class IP54.

  Assembly

  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.