T4800 INSTALLATION INSTRUCTIONS
18.Position the Hearth Extension
Position and secure the hearth extension over the protective metal strips that have been placed partially under the fireplace front. These strips should be protruding approximately 2” from under the fireplace front and 2” on both sides of the fireplace opening.
Seal the crack between the hearth extension and fireplace with a bead of noncombustible sealant. See Figure 19. Apply a noncombustible finishing material of your choice to the hearth extension.
Figure 19 - Position the Hearth Extension
19.Finishing Material
Do not install combustible materials over the black face of the fireplace! This poses a safety hazard and may start a fire. You may only use noncombustible material over the black face of the fireplace.
a.Combustible Material
Material which is made of or surfaced with wood, compressed paper, plant fibers, plastics, or any material capable of igniting and burning, whether flame proofed or not, plastered or unplastered.
b.Noncombustible Material
Material which will not ignite and burn. Such materials are those consisting entirely of steel, iron, brick, tile, concrete, slate, glass or plasters, or any combination thereof.
c.Noncombustible Sealant Material
Sealants which will not ignite and burn; General Electric RTV103 Black (or equivalent), Rutland, Inc. Fireplace Mortar #63 (or equivalent).
After completing the framing and applying the facing material (dry wall) over the framing, a ½” wide (maximum) bead of noncombustible sealant must be used to close off any gaps at the top and sides between the fireplace and facing to prevent cold air leaks.
Only noncombustible materials may be used to cover the black metal fireplace front.
20.Mantel
A combustible mantel may be positioned no lower than 12” above the top of the fireplace opening. The combustible mantel may have a maximum depth of 12”. Combustible trim pieces that project no more than 1½” from the face of the fireplace can be placed no closer than 6” from the top and side of the fireplace opening. Combustible trim must not cover the black metal surfaces of the fireplace. This mantel clearance is in accordance with Section
NFPA211.
21.Glass Doors
This fireplace has been tested and listed for use with doors as specified in Section C, “Fireplace System Components”. Please refer to the manual packed with each set of doors for installation instructions.
19 | 34922 Rev B |
