Ok Watkins' case off/open flue, potential flue gases into room. case on, flue gasses outside, no one dies 🙂Ok R1ck, dancin, steveb, & Leo can you tell me the difference in practical operational terms what the difference is between a boiler,oh, lets say a Viessmann Vitodens 100 or 200 W (standard enough boilers, yes ?) running case off & one being installed with an open flue vertical flue kit where it draws it's its air from the room ??? No ? not installed one ? well very handy to know if you are stuck with replacing an old open flued boiler with no horizontal flueing routes, worth a look ! Page 23 [DLMURL]http://www.viessmann.co.uk/content/dam/internet_uk/literature_new_website/dpg_sep2012_4web.pdf[/DLMURL]
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