Re: OM-148 Combustion Fumes
Do the boiler and the water heater share the same flue? They should not; since the water heater uses forced combustion air instead of passive, it should be direct vented to the outside using manufacturer-specified materials and installation instructions. (In addition, the combustion air intake should also come from outside.) There should be no way for combustion gases to backflow into the building space, such as through a draft control or backwards through the boiler's combustion chamber and intake vents.
Last edited by Fencepost; 05-29-2013 at 11:30 PM.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.