Selection program



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This selection program is provided in cooperation with Venture Industries.



Roof exhaust fans are designed for ventilation of rooms with low air pollution. They are used in exhaust systems with:

Flats, supermarkets, toilets, garages, car parks,
industrial halls, workshops, warehouses, service buildings.


  • Impeller with backward curved blades
  • Galvanised sheet steel base
  • Pressed aluminium shell
  • Junction box on the casing, IP55
  • Working temperature from -20 ° C to + 40 ° C.
  • Service switch as standard

Electric motor

  • Single-phase, electronically commutated, 230V 50 / 60Hz
  • Protection class IP44
  • Insulation class F

Remote control

The PROSYS ECOWATT remote control is required to set the following operating modes of the fan.

Constant pressure mode

  • Minimum speed between 0-50
  • Maximum speed between 50-100
  • Night mode adjustable between 25-100% pressure at maximum speed
  • Night mode adjustable between 50-100% capacity at maximum speed

Proportional working mode

  • 2 analogue inputs 0-10V or 4-20mA
  • The control operates according to the maximuma required parameters
  • Minimum speed between 0-50
  • Maximum speed between 50-100
  • Alarm relay output

MINI-MAXI Operating mode

  • The fan runs at high or low speed, the sensor or external contact is connected to the digital input
  • Minimum speed between 0-50
  • Maximum speed between 50-100

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