DW-ECO Chimney System

The DW-ECO system – a double-walled flue gas exhaust system – consists of smooth-walled pipes and fittings made of stainless steel, with a minimum wall thickness of 0.5 mm for the flue pipe and 0.5 mm for the outer casing. The system components are thermally insulated with 25 mm thick mineral wool, tightly fitted to the flue core and outer jacket. This technical solution prevents the formation of harmful thermal bridges that conduct heat from the flue core to the outer jacket. The DW–ECO system is available in diameters ranging from 80 to 500 mm (optionally up to 1000 mm). All longitudinal welds are performed using plasma cutting with shielding gases or laser cutting. Individual components are joined by push-fit using sockets and are secured as standard with a clamping band mounted on the outer jacket. The system is designed for use with heating appliances featuring an open combustion chamber, operating under negative pressure in dry or wet mode, and fuelled by gas, oil or solid fuels. It is also suitable for use as a ventilation system. It can be installed both inside and outside the building, and a wide selection of chimney fittings, ceiling brackets, wall brackets and wall consoles ensures easy and stable installation of the chimney to the building wall or supporting structure.

Scope of application – as a double-walled flue gas extraction system designed for combustion chambers operating under negative pressure, in dry or wet mode, fuelled by gas, fuel oil or solid fuels with a sulphur content not exceeding 3%, e.g. open fireplaces, tiled stoves, pellet boilers, bakery ovens, gas and oil boilers.