Jerry Simon Posted February 20, 2004 Report Posted February 20, 2004 Furnace "B" vent was about 1/8" away from a 4" PVC waste pipe....thoughts? Thanks!
kurt Posted February 20, 2004 Report Posted February 20, 2004 Peoples Gas is now 1" minimum to combustible(s). Most mfg's. say 2" minimum. Do you consider PVC combustible? I'm not sure. I do know if you burn the stuff, it's poison gas, very bad.
Brian G Posted February 20, 2004 Report Posted February 20, 2004 By the book, 1 inch clearance needed. Real world, it depends. The farther away from the furnace you get the less heat there is coming through the walls of the pipe (generally). How long has it been there? Any signs the PVC has been hot? Brian G.
Jerry Simon Posted February 20, 2004 Author Report Posted February 20, 2004 Brian & Kurt...thanks...my thoughts exactly...I don't know if PVC should be considered combustible (though I know it'll burn)...so I wrote it up as Brian said (by the book)...& I mentioned that toxic gas part. NO signs of overheating...home was 5 years old. Kurt, I think PVC is now allowed in Chicago....wasn't for years...I heard because the thought was if it was burning, it gives off that toxic gas. Wasn't real reason the plumbers union (takes longer to assemble cast)??? Guess someone realized if the plumbings burning, there's other, bigger problems.
E. Burns Posted February 20, 2004 Report Posted February 20, 2004 Is drywall considered a combustible? I quoted the code reference in the gas water heater thread previously. Thanks, Ellen
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now