John Dirks Jr Posted December 16, 2012 Report Share Posted December 16, 2012 I'm trying to determine if I can back up a clearance issue using the manufacturer installation instructions. The linked manual (pg 11 pg 13) says clearance above deck 12" minimum. Does the railing count as deck? Is there an applicable violation to this vent in the manual? http://hearthnhome.com/downloads/instal ... 31_550.pdf Click to Enlarge 33.7?KB Quote Link to comment Share on other sites More sharing options...
Eric B Posted December 17, 2012 Report Share Posted December 17, 2012 Last I heard wood railings are just as combustible as wood decks. I think you're good to go. Quote Link to comment Share on other sites More sharing options...
John Dirks Jr Posted December 17, 2012 Author Report Share Posted December 17, 2012 Last I heard wood railings are just as combustible as wood decks. I think you're good to go. That's what I was thinking but the documents don't mention clearance to combustibles for the vent termination. They only say 12" minimum above decks. Are you sure the intent of the instruction document is to include combustibles? Or are they giving clearances for the purposes of safe drafting and exhausting of CO gasses? Quote Link to comment Share on other sites More sharing options...
John Dirks Jr Posted December 17, 2012 Author Report Share Posted December 17, 2012 My bad. I edited the original post. Page 13, not 11. Quote Link to comment Share on other sites More sharing options...
Bill Kibbel Posted December 17, 2012 Report Share Posted December 17, 2012 Sidewall vent termination clearance to combustibles: 1" below & sides and 3" above. Quote Link to comment Share on other sites More sharing options...
John Dirks Jr Posted December 17, 2012 Author Report Share Posted December 17, 2012 Thanks Bill. Btw, where can I reference this information? Quote Link to comment Share on other sites More sharing options...
Brandon Whitmore Posted December 17, 2012 Report Share Posted December 17, 2012 Sidewall vent termination clearance to combustibles: 1" below & sides and 3" above. That's standard required clearances for direct vent vent pipe, but I'm not sure it's the same requirement at the vent termination. John- See figure 6.2 for those listed clearances. Quote Link to comment Share on other sites More sharing options...
John Dirks Jr Posted December 17, 2012 Author Report Share Posted December 17, 2012 Sidewall vent termination clearance to combustibles: 1" below & sides and 3" above. That's standard required clearances for direct vent vent pipe, but I'm not sure it's the same requirement at the vent termination. John- See figure 6.2 for those listed clearances. For some reason I was thinking about interior pipe runs for those dimensions. My answer was right there in the manual and I missed it. Thanks for setting me straight. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted December 17, 2012 Report Share Posted December 17, 2012 Sidewall vent termination clearance to combustibles: 1" below & sides and 3" above. That's standard required clearances for direct vent vent pipe, but I'm not sure it's the same requirement at the vent termination. John- See figure 6.2 for those listed clearances. Figure 6.2 shows annular clearances around the pipe, not from the termination. So far, I don't see anything in the instructions that would prohibit the installation in John's picture. Quote Link to comment Share on other sites More sharing options...
Hearthman Posted February 18, 2013 Report Share Posted February 18, 2013 That post should be treated as an inside corner, which requires a 6" clearance. That's it. The exhaust is out the top of the trapezoidal cap. See the deflector? The air intake is the area closer to the wall. Quote Link to comment Share on other sites More sharing options...
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