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Roof-mounted fan for fireplaces VENTS VKT

Roof-mounted fan for fireplaces VENTS VKT
Roof exhaust gas extraction booster fan for fireplaces. Air flow up to 1000 m³/h.
Model features
  • Extract mode
  • Roof fan
  • Smoke extraction ventilation
  • Description
  • Downloads
  • The fans are designed for boosting the draft and extracting smoke fumes heated up to 200 °C* for 5 hours. The units are used for extracting hot smoke from fireplaces, furnaces and hearths. The fans are also suitable for standard periodic or constant exhaust ventilation.
  • The fan casing is made of galvanized steel with a polymer coating protecting from weather elements and aggressive environments. The fan has a protective grille to prevent accidental contact and penetration of foreign objects.
  • The fan is mounted on the roof on the top section of the chimney. Make sure that the location provides for sufficient space as required for the fan maintenance. The approximate temperature of the effluent gases can be determined according to the kindling colour.
  • The fan is connected to the power mains via a transformer or thyristor speed controller, which enables draft regulation and, consequently, maximum efficiency of the fireplace operation.


The fan must be turned on in case of open fire in the fireplace. When the transported air temperature is 200 °C, the fans must run at the top speed without a speed controller.

  • The fan is equipped with a single-phase asynchronous motor on ball bearings which contribute to a long-term uninterrupted service. The motor is offset from the transported air stream and has an integral thermal protection. The compartment housing of the motor is isolated from the hot air stream and has ventilation openings for air circulation and heat removal.
  • A purpose-designed impeller with backward-curved blades minimizes soot and carbon deposits for trouble-free operation and easy maintenance.

* The smoke fume temperatures can be determined by putting a piece of kindling into the chimney at the level chosen for the fan installation and keeping it there for 30 minutes while the fireplace is hot.

Kindling colour Approximate smoke fume temperature, [°C]
Unchanged up to 150
Yellow (wheat bread crust) 200
Brown (brown bread crust) 250
Black 300
Charred kindling 400
VKT fan application option
Select document type
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  • Technical documentation
"VENTS VKT" product description 10-2020 (pdf 530.52Kb)
Download high quality image "VENTS VKT" (psd 2.24Mb)
Download image "VENTS VKT" for your website (png 493.86Kb)
"VENTS VKT" user's manual 09-2015 (V105EN-02) (pdf 2.03Mb)
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