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    Biomass boilers

    We offer you the best flue solution for any application.

    Biomass boilers

    Biomass boilers (woodchips, pellets, firewood…) are characterized by always working in a natural draft characteristic and are regulated by the fan in and or out of the combustion chamber to reduce fuel fire inside the chamber of combustion. This operating system requires that the chimney flue to be as stable as possible to avoid influencing the combustion of the boiler (an excess of draft would imply an increase in combustion air intake and fan the fire, thus modifying the control parameters). For this purpose, it is highly recommended the use of draft regulation elements (regulators and or stabilizers) to ensure a consistent and stable combustion in any situation.

     

    In addition, the generated soot is very corrosive (especially in the case of pellet boilers), so the material of the interior wall must always be AISI 316L.

     

    The soot deposits also have the risk of burning inside the chimney, so the chimneys used for these applications must have successfully passed the soot fire resistance tests indicated in the current regulations and their installation must be done with special care following the assembly instructions, especially in areas where the chimney exhaust passes through or close to combustible materials, see specifications for clearances to combustible materials when passing through walls, passages or roof openings in wood framed roofs or buildings, respecting the established safety distances to avoid potential fires from heat transfer.

     

    The chimneys should always be twin wall insulated in both inside the building and outside. It is possible to use a simple wall only in chimneys that run through independent shafts without being shared with other services that could be affected from heat transfer (wiring, etc.).

     

    Suitable systems for this application are:

    DW-ECO 2.0 316

    Chimenea modular metálica para la evacuación de humos y gases de los productos de la combustión de doble pared fabricada en acero inoxidable interior y exterior (316L/304) con abrazadera de unión ancha (2.0)

    DW-FS 32 316

    Twin wall insulated, factory-made exhaust system for high temperatures and high pressures with a flanged joint of the inner pipe

    DW-FS 50 316

    Twin wall insulated, factory-made exhaust system for high temperatures and high pressures with a flanged joint of the inner pipe

    25 years warranty!