The name Viessmann is synonymous with quality in the heating industry. A German company, Viessmann has been designing, developing & manufacturing heating equipment for almost a century. Well respected in the industry and always at the forefront of new technology, you can rely on Viessmann for highly efficient heating systems that maximise performance and minimise emissions. Vitolig 300 Wood  Pellet Boilers Top Class Pellet Boilers The Vitolig 300 pellet boiler with a rated output of 4.3 to 25.9 kW is, where heating convenience is concerned, as practical and easy to operate as an oil fired heating system. The modulating operation of the Vitolig 300 offers a wide spectrum of applications, from low energy houses to buildings with a higher heat demand. The new digital control unit with menu-guided plain text display provides comprehensive yet simple operation. Modulating operation is achieved through a variable speed induced draught fan, enabling optimum matching of the output to the actual heat demand. A pellet auger provides a fully automatic fuel supply. The integral 232 litre pellet hopper allows for a long, uninterrupted operation.