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When should one use sealed combustion versus direct vented? A sealed combustion furnace could be direct vented or indirect vented. At least some condensing furnaces can be installed in either direct vent (sealed combustion) or non-direct vent configuration. See, for example, a condensing furnace with installation instructions for direct and non-direct vent configurations. http://pts.myrheem.com/docstore/webdocs/ServiceDocs/histlib/pdfs/Furnaces/IO/92-24161-16-03_GRA_GRJ_GTA_GTJ.pdf"
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The text was updated successfully, but these errors were encountered: