The Chimney Sweep Online Fireplace, Woodstove, Gas Stove and Barbecue Shop
A: Minimum Fireplace Opening Width.................... 25" B: Minimum Fireplace Opening Height................... 22" C: Minimum Fireplace Depth at Floor..................... 15" D: Minimum Fireplace Depth at 20" above Floor... 15" E: Minimum Fireplace Width at 15" Depth............. 24" F: Minimum Hearth Width....................................... 41" G: If Fireplace Opening is raised above hearth: add optional hearth trim kit across bottom of insert & panels H: Minimum Hearth Depth (original fireplace hearth plus extension if needed)....................... 16" I : Stainless steel liner size.......................................................................................................... 6" J: Minimum Height from Hearth or floor of fireplace to Combustible Trim....................... 49-1/4" J(a): Hearth to Combustible Trim with Optional Mantel Shield installed........................... 38-1/4" K: Minimum Distance from Centerline of Fireplace Opening to Combustible Side Trim......... 21" L: Minimum Distance from Centerline of Fireplace Opening to Combustible Side Wall.......... 21" M: Minimum Height from Hearth or floor of fireplace to Combustible Mantel.................. 49-1/4" M(a): Hearth to Combustible Mantel with Optional Mantel Shield installed..................... 38-1/4" Area covered by standard (embossed) surround panels............. 26-1/4"T x 36-1/2"W Area covered by extra-large (not embossed) surround panels.... 29-1/4"T x 42-1/2"W |
| Left: Minimum requirement. If the chimney is properly lined with terra-cotta liner tiles with a 9" x 9" opening or smaller, a direct-connect installation is permitted. Remove damper assembly, cut and anchor a stainless steel sealer plate (removable for cleaning) at the throat of the fireplace. Insert a length of 6" stainless flex long enough to reach into the bottom liner tile through a hole cut in the sealer plate.Advantage: less expensive than full relineDisadvantages: reduced updraft, increased creosote formation, insert must be removed to clean chimney. |
Right: Preferred method, and required for zero-clearance fireplace installations, unlined masonry chimneys, or if existing liner is damaged. Remove damper assembly, install a 6" stainless steel liner the entire length of the chimney, passing through a stainless steel sealer plate at the top of the chimney; finish at top with stainless top clamp, storm collar and rain cap assembly.Advantages: better updraft, better performance, reduced creosote formation, chimney can be cleaned without removing insert.Disadvantage: more expensive to installTo read more about installing your stainless liner, click here. |
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Note: your mileage may vary! Some code jurisdictions don't allow direct connect insert installations, even if provided for in the Manufacturer's Product Safety Listing. Consult with your local Code Authority. |