Vitoflex 300-VF – fully automatic wood boiler

Take advantage of these benefits

  • Biomass boiler for dry to damp wood fuels
  • High efficiency of up to 92 percent
  • Minimal heat losses due to complete insulation
  • Output guaranteed up to moisture content of 45 percent
  • Automatic ash removal

Suitable for a very wide range of wood fuels

The Vitoflex 300-VF is suitable for burning damp spruce woodchips, pellets or residual wood from forestry and sawmills.

The flat moving grate is charged by means of a screw conveyor feed or an hydraulic feed with water-cooled feed neck. At the end of the grate, a screw conveyor transports the ash into a sealed ash container.

Low NOx technology reduces nitrogen oxide emissions

The Vitoflex combustion chamber is equipped with an air stage on the primary side for reduced NOx emissions.

In addition, this effect is amplified by a flue gas recirculation system (option). An energy conversion efficiency of up to 92 percent allows highly efficient operation even in modulating mode.

Product cross-section


Output (kW)
280 to 1700 kW
Flat moving grate combustion
Permissible flow temperatures
up to 100 °C, above 110 °C also available as an option
Maximum operating pressure
6 bar
up to 92 %
Pellets, woodchips (max. M55/G50), wood remnants
Application range
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Commerce, industry, municipal offices, new build and modernisation projects
Additional features
Fully automatic ash removal. Modulating load control from 25 to 100 %. Staged combustion (low NOx combustion chamber).
Produktschnitt Holzheizkessel Vitoflex 300-VF