FD Cast Iron boilers are intended for burning coal, wood, and wood briquettes. Boilers are assembled from high quality cast iron sections and for convenience the boiler’s door is enlarged for easy loading of large fuel pieces. Non-electric automatic draft controller and manually regulated secondary air combustion control, provide air for complete burning.
The Futura Econo boiler has an automatic feeding system that is designed for the combustion of granulated coal. The granulation of coal (anthracite - hard coal) should be no larger than 3/4" (sold on the market as Buckwheat or Rice coal). The Econo boiler is also suited for the burning of solid fuel, such as wood and wood pellets, with small adjustments.