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Vitofflex 300 UF 720 kW

Wood boiler with state of the art grate combustion, from 390 to 1250 kW. For wood fuels with a maximum moisture content of 50 percent. The moving infeed grate, proven combustion retort and sloping external grate in the Vitoflex 300-UF optimally combine the benefits of infeed and underfeed combustion. A feed screw conveyor guides the wood fuel into the combustion retort, where it is pre- dried. The fuel is completely degassed on the external grate and the moving infeed grate. The wood gases are then burned with the aid of a regulated supply of secondary air. Top quality design and construction The Vitoflex 300-UF wood boiler features high quality construction for use under the toughest conditions (high fuel flexibility from M10 to M50). The inside of the combustion chamber is lined with pressed fireclay bricks with a high clay content for greater durability. All grate elements are high quality, heavy gauge chromium steel castings that can withstand very high temperatures. A distinguishing feature of the Vitoflex 300-UF wood boiler is its proven three-pass heat exchanger, providing maximum heat transfer and exceptional e ciency. Clean and e cient combustion The combustion technology of the Vitoflex 300-UF achieves low emission values (particularly for CO and NOx). Operation with modulating output control and the optimised combustion principle enables e ciency levels of up to 92 percent.