Vitoflex 300-RF

A convenient and reliable mobile heating centre in a container

This innovative solution is ideal if no boiler house is available or if on-site building expenses have to be kept to a minimum. Designed for wood fuels with a maximum moisture content of 35 per cent, these boilers provide rotation combustion of up 540 kW.

  • Powered by
  • Up to
    540 kW
  • Automatic
  • Moisture Content
    < 35%
  • Modulating 
    Output Control
  • Self-contained
  • Advanced safety
  • Made in
  • Fully automatic wood boiler
  • Rotation combustion
  • Rated heating output range: 150 to 540 kW
  • For dry wood fuels with a maximum moisture content of 35%
  • Easy to maintain thanks to fully automatic ash removal, optional pneumatic cleaning system and flue gas dust extractor
  • Permissible flow temperature up to 100°C
  • Two-pass heat exchanger and modulating output control (4:1 control range)
  • Automatic ignition avoids the need to maintain the firebed and saves fuel
  • High efficiency (up to 94%) and low emissions in load operation due to controlled primary and secondary air supply, and low particle combustion
  • Available as a complete, ready-to-use containerised solution
  • Permissible operating pressure: 3 bar (4.5 bar on request)
  • Highly developed safety equipment ensures safe and reliable operation

Key Benefits

A wood boiler with rotation combustion

An innovative wood boiler with rotation combustion from 150 to 540 kW. For wood fuels with a maximum moisture content of 35 percent.

The Vitoflex 300‑RF wood boiler features a state of the art patented rotation combustion system. A feed screw conveyor continuously conveys wood fuel onto a moving grate, where gasification of the fuel occurs (with Lambda regulated primary air supply). Continuous gasification occurs under air starvation. Rotary fans mix rising combustion gases with secondary air that has been atomised and subjected to angular momentum. This ensures thorough mixing with the combustion gases.

Clean and efficient combustion

The proven combustion technology of the Vitoflex 300-RF achieves similar emissions values to those of an advanced gas combustion system and keeps the release of CO, NOx and dust particles to a minimum, subject to fuel type.

The combination of combustion technology and digital modulating output control enables efficiency levels of up to 94 percent.

Mobile heating centre in container

Vitoflex 300-RF wood boilers are available as containerised complete solutions for situations where there are no boiler houses available or where on-site building costs have to be reduced to a minimum. These ready-to-use solutions include a pre-assembled wood boiler inside a special container and all auxiliary appliances. Individual container solutions can be specially adapted to meet specific requirements.

Heating with wood – the most natural fuel in the world

The rising cost of fossil fuels, and growing environmental awareness have been steadily increasing the demand for renewable forms of energy. A wood boiler is a good alternative to heating with oil or gas. Alongside environmental considerations, there are also economic reasons for relying on wood. As an indigenous fuel, wood is very cost efficient and not subject to extreme fluctuations.

Viessmann wood boilers are highly efficient and economical in their fuel consumption. They are suitable both as the sole heat generator and as a supplement to oil or gas boilers. By installing a wood boiler, spending on oil and gas is reduced significantly so the boiler starts paying for itself almost immediately.

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Product Data

Brochure | Wood heating systems from 100 to 1700 kW


Vitoflex 300-RF

Vitoflex 300-RF

Output (kW)

Vitoflex 300-RF

150 to 540 kW


Vitoflex 300-RF

Rotation combustion

Permissible flow temperatures

Vitoflex 300-RF

up to 100 °C

Maximum operating pressure

Vitoflex 300-RF

3 bar


Vitoflex 300-RF

up to 92 %


Vitoflex 300-RF

Pellets, woodchips (max. M35/G50)

Application range

Vitoflex 300-RF

Apartment buildings, large residential buildings, commerce, municipal offices, new build and modernisation projects

Additional features

Vitoflex 300-RF

Fully automatic ash removal. Digital modulating output control (4:1 control range). Automatic ignition precludes the need for firebed maintenance and saves fuel

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Related Products

Vitoflex 300-UF
A powerful wood boiler with grate combustion

With an output of between 390 and 1,250 kW, the Vitoflex 300-UF wood boiler features an exceptionally efficient three-pass heat exchanger. It is designed for wood fuels with a maximum moisture content of 50 per cent.

Discover the Vitoflex 300-UF
  • Powered by
  • Up to
    1250 kW
  • Three pass heat
  • Proven combustion
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