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The sum of all "R" values is:
.70 + .10 + .068 + .5825 = 1.4505
This would be an acceptable combination of
materials for the hearth extension since the
total calculated "R" value of all material used
exceed the required "R" value of 1.19.
WARNING: THE CRACK BETWEEN THE
FIREPLACE AND THE HEARTH EXTEN-
SION MUST BE SEALED WITH A NON-
COMBUSTIBLE MATERIAL.
WARNING: THE FIREPLACE MUST BE
RAISED IF THE HEIGHT OF THE HEARTH
EXTENSION EXCEEDS 8
BOTTOM OF THE FIREPLACE ( FIGURE
46 ).
8
" Max.
Maximum Thickness of Hearth Extension
when EST-48 is on the Floor
Figure 46
FINISH TO YOUR TASTE
There are a wide variety of "finished looks" for
these fireplaces, from formal wall decor with
elaborate mantels to rustic wood paneling or
warm brick facings.
Only noncombustible materials like stone, tile,
brick, etc., may overlap the black front facing.
Do not extend these materials beyond the black
facing and into the firebox area. Be sure not to
interfere with the installation and operation of
glass doors or block the upper or lower grilles.
Seal all joints between the black facing and wall
surrounds to prevent air intrusion. Use non-
combustible caulking material only to seal the
black metal facing to the surround material on
the finished wall.
Combustible materials may project beyond the
sides of the fireplace opening as long as they
are kept within the shaded areas illustrated in
Figure 47 .
Combustible
Materials Allowed
in Shaded Areas
4
"
" ABOVE THE
Figure 47
INSTALLATION COMPONENTS
The following items are available for use in the
installation of this appliance.
Outside Combustion Air Kits
(with duct)
(without duct)
Combination
Offset/Return Elbow
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Fireplace
3
"
"
15
12" Min.
Distance to
Protected Side Wall
18" Min.
Distance to
Unprotected Side Wall
81L87
FOAK
81L88
FOAK-LD
63L35
FTF13-OR15
Firestop Spacer (30 )
63L37
Offset/ Return
Package (30 )
63L24
Chase Termination
(Square)
63L54
Stabilizer
63L27
Locking Band
63L60
F10FS30-2
FTF13-ES30
FTF13-CT2
FTF13-S4
FLB
17
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