Required Clearance to Combustibles
9
The Standard EPA qualified fireplace fireplace and DM 54 chimney system is tested and listed for installation with “clear
-
ance to combustibles” as follows:
A:
Four inch (4”) clearance to the combustible floor;
B:
One and one-half inches (1 1/2”) clearance at the Isokern firebox and smoke dome sides and front ;
C:
One and one half inches (1-1/2”) clearance at the Isokern firebox and smoke dome back wall ;
D:
Zero inch (0”) Clearance to the DM chimney system. Contact metal pipe manufacturer for specific clearance
information
CAUTION:
Maintain three inches (3”) clearance to insulation and vapor barriers from all firebox, smoke dome flue components.
Note:
“Combustibles” are defined as “normal construction materials” and are considered to be: wood framing materials, particle
board, mill board, plywood sub-flooring, plywood paneling and wood flooring.
Sheathing materials, such as plywood, particle board and drywall may cover the smoke dome front at 0” clearance.
All combustible sheathing materials that protrude beyond front of firebox must be held 8” away from the sides of the fire
-
box opening and 8” above the top of the firebox opening. Drywall must be cut 2” back from the firebox opening sides and 8” above
the top of the opening.
Notes:
A. The Standard EPA qualified fireplace fireplace is rated for installation on a combustible floor system when using the
Fire-Lite application only.
The Standard EPA qualified fireplace must sit upon a concrete support slab designed to bear the total installed weight of
the fireplace and DM 54 chimney system. These support slabs can have no wood underpinnings.
B. Concrete support slabs for the Standard EPA qualified fireplace must provide the noncombustible hearth extension
substrate needed to support the code required noncombustible hearth extension finish materials.
C. All Standard EPA qualified fireplaces shall have hearth extensions of approved noncombustible material such as brick,
tile, or stone that is properly supported and with no combustible material against the underside thereof. Wooden forms used during
the construction of hearths and hearth extensions shall be removed when the construction is complete.
D. If a raised fireplace floor and raised hearth extension are preferred, the raised underlying structure must be built of non
-
combustible material and must sit on noncombustible substrate.
B
A
B
B
D
D
D
C
Non-Combustible
Floor System
(non-insulation)
Hearth Extension
(non-combustible)
