B
Billy Bob Bob
baxi have never had one fail on a duotec what model are you referring to ricky?It could become unsafe and it wouldn't be a room sealed boiler anymore.
Most modern condensing boilers have a burner which is under positive pressure. Now if a burner seal was to fail, products of combustion would be entering the room if the case was removed. With the case in place, the products would be contained inside the boiler casing.
Lots of Baxis, Vaillants and Glow Worms have had issues with burner seals failing, I wouldn't like that to happen and have the case removed!