Inspector1 0 Posted December 9, 2016 Report Share Posted December 9, 2016 Check out where someone cut off the elbow for the intake valve for the furnace in the crawlspace. Previously it was vented five to the exterior. Allowable ever.??? Click to Enlarge 37.42 KB Quote Link to post Share on other sites
mjr6550 5 Posted December 9, 2016 Report Share Posted December 9, 2016 I assume you mean combustion air supply? Yes, it is typically allowed. Quote Link to post Share on other sites
Mike Lamb 56 Posted December 9, 2016 Report Share Posted December 9, 2016 I'm sure you know exterior vent termination rules change when going from direct to non-direct vent. Click to Enlarge 34.7 KB Quote Link to post Share on other sites
Brandon Whitmore 1 Posted December 10, 2016 Report Share Posted December 10, 2016 I suggest you take a picture of the manufacturer's nomenclature plates during the inspection. You can use that information to look up the installation instructions on-line. Then, you'll learn what the manufacturer's require or allow. Quote Link to post Share on other sites
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