Fan-assisted trench heating with EC technology


  • Whisper-quiet EC technology
  • Optimised for use with low temperatures, outputs in accordance with DIN EN 16430
  • Made-to-measure
  • Short delivery times for our standard trenches
  • A matching edge profile for a perfect design with every grille
  • Quick installation with Eurokonus valve fittings, height-adjustment feet and raised floor mounting feet
  • Project solutions are available for all geometries with mitred corners, curved designs, column recesses or chamfered trenches
  • KaControl control system as standard or an electromechnical controller optional
  • Can be integrated into KaControl networks or building automation system, such as BACnet, Modbus or LON
  • accessories Katherm module system:
  • Effective cold air screening of large windows
  • Extra long EC fan for uniform convector airflow resulting in high heat outputs at low sound emissions
  • Unique high-performance convector optimised for airflow and heat dissipation
  • Sturdy height adjustment feet with sound insulation for simple fixing of the trench and to avoid airborne sound transmission
  • Anti-twist device for the heating connection prevents damage to the convector when fitting the valves; valves optional as accessories

Technical details:

Katherm QK
  • Clear view and feel good temperature in front of full-length glass façades
  • For complete room heating, a supplementary heat supply and/or cold air screening
  • High-performance at low temperature ranges, perfect in combination with trend-setting heating systems
  • 120 different versions are available
  • The Katherm QK benefits from the expertise of our in-house Research and Development Center, tailored to customer requirements from the marketplace.
  • The heat outputs were measured and determined in accordance with E DIN EN 16430 "Fan-assisted radiators, convectors and trench convectors" Part 1: "Technical specifications and requirements" and Part 2: "Test method and rating of the heat output."
  • The QK standard lengths can be extended in 200 mm increments from 1000 mm to 3200 mm. Lengths that are not available can be created with individual tailor-made units.

A higher degree of motor efficiency is possible with the new highly efficient EC fans that are capable of achieving energy-savings of up to 60% compared with conventional split-pole motors. 


Up to 6 Katherm QK can be controlled via the KaControl T-LAN interface, depending on the control and regulation concept. This can be extended up to 30 Katherm QK via a CANbus interface (CANbus card needed). 


The following Katherm QK are available:

  • 3 trench widths 182, 207 and 232 mm with 2 additional output ranges. (These are available on request).
  • 1 trench height 112 mm
  • 12 trench lengths from 1000 to 3200 mm in 200 mm increments
  • 8 grille colours as roll-up or linear grilles
  • KaControl control system as standard or an optional electromechanical controller

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