I’ve searched the old BBS and can’t find the answer. Can you kind folks guide me to the IRC code for clearance to combustible for an oil furnace connector? (Is the proper word *connector *or flue?)
Please see the attached photo. Furnace is new. I think the pipe is single wall and it touches the floor joists above.
I think it’s table M1803.3.4 that I need to reference, which would require 9 to 18 inches but I’m not sure.