cbass Posted December 18, 2010 Report Share Posted December 18, 2010 I was at a home today with a 125,000 btu oil boiler in the basement and a fairly large coal stove in the above kitchen, both sharing the same clay lined flue. I know that you cannot share a wood burning device and a oil burning device on the same flue, but can oil and coal share a flue assuming that the flue is sized correctly? Do problems arise if both are being used at the same time? Thanks in advance. Quote Link to comment Share on other sites More sharing options...
Mark P Posted December 18, 2010 Report Share Posted December 18, 2010 People still cook with coal? I had no idea. Quote Link to comment Share on other sites More sharing options...
cbass Posted December 18, 2010 Author Report Share Posted December 18, 2010 They heat with it apparently... so... can you share the flue? Quote Link to comment Share on other sites More sharing options...
Steven Hockstein Posted December 18, 2010 Report Share Posted December 18, 2010 They are on different floors and sharing a flue? I would call it out just for that. Quote Link to comment Share on other sites More sharing options...
cbass Posted December 18, 2010 Author Report Share Posted December 18, 2010 yea, that is what i thought... the home owners explanation is that they only use one or the other...??? Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted December 18, 2010 Report Share Posted December 18, 2010 There's also this from the IRC: M1801.12 Multiple solid fuel prohibited. A solid-fuel-burning appliance or fireplace shall not connect to a chimney passageway venting another appliance. Quote Link to comment Share on other sites More sharing options...
cbass Posted December 18, 2010 Author Report Share Posted December 18, 2010 Thanks Jim. Quote Link to comment Share on other sites More sharing options...
Hearthman Posted December 27, 2010 Report Share Posted December 27, 2010 coal is a *solid fluel* so not allowed to be common vented with other fuels except for listed dual fuel appliances. For ex., if you have a boiler that is listed to fire coal or gas, that is allowed but not with another appliance. HTH, Quote Link to comment Share on other sites More sharing options...
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