10
87D0174
SSTB11 Woodburning Fireplace
FLOOR PROTECTION
If this fireplace is installed on a combustible floor, the floor area 16 inches in front of, and 8 inches either side of the
fireplace opening must be protected by an insulating noncombustible hearth extension.
Figure 8
With either type hearth extension minor shifting of the supporting floor or expansion and contraction may eventually
cause a crack to develop between the hearth extension and the face of the fireplace. To help prevent the crack from
developing, the hearth extension materials must be firmly fastened in place. Wall ties should be screwed to the face
of the fireplace and imbedded in the mortar joints of brick, stone, or other non-combustible materials. The metal safety
strip packed with the fireplace must be placed beneath the fireplace and extended under the hearth extension or into
a mortar joint of the hearth extension as shown by
Figure 9
. In the event a crack does eventually develop, the metal
safety strip will serve as a barrier to prevent sparks or embers from falling from the fireplace onto combustible flooring
materials.
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FIREPLACELOCATION
16”
3/4”
2
6M
” Min.
60”
3/4”
8”
Model H1652
Hearth Extension
Model H1652
Hearth Extension
Parallel
Back Wall
Perpendicular
Side Wall
Side Brick Outline
Glass Door
Glass Door
Min. Air
Space
Min. Air Space
FP2179
Figure 8
NOTE:
If noncombustible hearth extension materials are to be
placed at or below the level of the bottom of the fireplace, insu-
lation board is not required.
If the fireplace is recessed into the floor or the hearth is elevat-
ed with combustible materials, an MHSC H1652 hearth exten-
sion kit or equivalent must be used for additional protection.
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SAFETYSTRIP
Metal Safety
Strip
(2 Required)
2”
2”
2”
Special ‘Z’ Metal
Safety Strip
(2 Required)
FP2183
Figure 9
