Responding to a request, we are making some of the online Answers and Analysis offered only to IAPMO members available here.
1. Are we to assume that furnaces shall no longer be installed in underfloor spaces for new construction? We are a little confused on the reasoning for deleting these requirements when replacing or installing furnaces in crawl spaces. If underfloor furnaces are still allowed, what code requirements do we use? 2. Is there a particular reason(s) that IAPMO does not recognize factory-built, listed, wood-burning fireplaces? 3. If the 2006 UMC does not address the past requirements of "return air," especially prohibited locations, what resource does IAPMO rely on for these requirements?