On the exterior side of the wall of where I plan to run my pellet stove exhaust pipe through, I have a 12" high septic clean out pipe that is capped. I would say that clean out pipe is approximately 6" away from the exterior side of the house. Where I plan to bore through the wall and install my exhaust pipe, it would be approximately 18" up and away form this clean out pipe. Are there any code regulations that any of you are aware of on how far away one needs to be from a septic clean out pipe with a pellet stove exhaust pipe? The reason I ask is I am almost 100% sure that some septic gasses (mainly methane) escape from that pipe (even though it is capped), and I don't know if there is a code for installing a pellet stove pipe in close proximity to this because of a possible spark or ember igniting these gasses. I do realize that 99.999% of the time a spark or ember will never make it to exterior side of the pipe on a pellet stove, but I didn't know if a code was ever put in place for the 0.0001% of the time it might or for people that don't take the proper steps to maintain their stoves and have a better chance of getting spark, embers, etc., travelling to the outside. I do know there are clearances to bushes, trees, vegetation, as well as other combustibles, but I wasn't sure if septic gasses coming out of a clean out pipe also applied.
