Rear side fireclay (back wall fireclay) made of vermiculite with holes

Das Flammrohr mit "Griffen" wurde hierdurch abgelöst und es passt wie bisher

Thanks to the round head with a diameter of 4cm

covered by the spoiler

Gasket for the exhaust fan (induced draft fan)

Isolierung innerer Kesseldeckel Vermiculite -Smart (XS)- Deckel Rear side fireclay (back wallVermiculite insulation for the inner boiler lid. For koFEN Smart or Smart XS pellet boilers from 07 2013 . Please note during installation: The screws must not be tightened too tightly; there must always be a small amount of play between the insulation and the screw. There are two variants of the insulation! Please pay attention to your pellet boiler model: koFEN Smart or koFEN Smart XS (not suitable for devices with ZeroFlame technology) Please