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Hearthstone Clydesdale Insert Installation Specifications
Dimensions... 22-1/2"T x 31-1/16"W x 23-15/16"D

Surround panel mounts in either of two positions to allow installation at various depths:
Flush Installation: 6-3/8" Extension onto hearth, 17-9/16" Extension into fireplace
Extended Installation: 10-7/8" Extension onto hearth, 13-1/16" Extension into fireplace

A: Minimum Fireplace Opening Width.......................................... 33"
B: Minimum Fireplace Opening Height.......................................... 23"
C: Minimum Fireplace Depth at Floor............................................15"
D: Minimum Fireplace Depth at 20" above Floor.......................... 15"
E: Minimum Fireplace Width at 15" Depth.................................... 25"
F: Minimum Hearth Width.................................................... 38-3/16"
G: Raised Openings: Hearth Surface must be raised to level of firebox floor
H: Minimum Hearth Depth (including extension if needed), Flush Installations............... 18"
H: Minimum Hearth Depth (including extension if needed), Extended Installations... 22-5/8"
I : Stainless steel liner size.............................................................................................. 6"
J: Minimum Height from Hearth or floor of fireplace to Combustible Trim............... 46-1/2"
K: Minimum Distance from Centerline of Fireplace to Combustible Side Trim......... 24-1/2"
L: Minimum Distance from Centerline of Fireplace to Combustible Side Wall.......... 27-1/2"
M: Minimum Height from floor of fireplace to Combustible Mantel.......................... 46-1/2"
M(a): Minimum Height from floor of fireplace to Combustible Mantel with Shield.... 33-1/2"

Area covered by surround panels....... 29-1/2"T x 47-1/8"W

Two Listed Methods for venting the Clydesdale wood insert:

Left: Minimum requirement. If the chimney is properly lined with terra-cotta liner tiles measuring 8" x 8" 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 pipe long enough to reach into the bottom liner tile through a hole cut in the sealer plate.

Advantage: less expensive than full reline

Disadvantages: reduced updraft, increased creosote formation, insert must be removed to clean chimney.

Right: Preferred method, and required for zero-clearance fireplace installations or if existing chimney is unlined, if the liner is cracked or damaged, or if the flue opening is larger than 8" x 8". 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.

Advantages: better updraft, better performance, reduced creosote formation, chimney can be cleaned without removing insert.

Disadvantage: more expensive to install

To read more about installing your stainless liner, click here.

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