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Re: Mid efficiency furnace combustion air
Originally Posted by Jerry McCarthy
Gunnar
If you have a copy of ther 2006 UMC or 2007 CMC check Chapter 7: Combustion Air. This diagram may also help as there has been some changes (many) in this chapter.
Jerry Mc.
No, I don't. Time to buy the CBC. I was just so frustrated when CA did not use the IRC that I refused to buy the latest code.
However, your post does not completely address the question brought up by the Code Check flip book It looks like I was not as clear as I had originally thought. In this particular home, the vent openings are into the wall that separates the lower floor from the foundation crawlspace. The lower floor is on a slab and the main floor is above part of the lower floor and partially above a sloped foundation crawlspace. No vents into under the lower floor since it is a slab. Vent openings are into the wall. As I said earlier, too small and not low/high enough. But the problem that I had was this note in the Code Check (IRC edition) book that indicated both vents could not go into the crawlspace area even though I could not find the reference in the IRC.
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Last edited by Gunnar Alquist : 11-23-2008 at 06:32 PM.
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