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55511F
6
FIREBOX INSTALLATION
Continued
VENTING INSTALLATION
237,21$/2876,'($,5.,7
The installation of an outside air kit should be per-
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to the nature of it’s location. Outside combustion air
is accessed through and exterior wall or a vented
crawl space (see Figure 12, page 7).
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must not terminate in attic
space.
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termination.
Avoid installing outside air eyebrow in areas
where inlet opening may be blocked by snow,
bushes or other obstacles. It should also be
located beyond the reach of small children.
For further details on installation of outside air
kit, please refer to instructions included with
air kit. For operating instructions, please refer
to your owner's manual.
8" Max.
“K” Factor
.84
1
1
/
2
" Typ.
1
1
/
2
" Typ.
Noncombustible
Hearth
Extension
“Z” Type Ember
Protector
Noncombustible
Hearth Extension
Ember Protector
Figure 11 - Raised Hearth Extension
Figure 9 - Nailing Flanges
Nailing
Flanges
Prepared
Framing
Nails or
Screws
1/2" (1.27 cm)
Minimum to
Combustibles
+($57+(;7(16,21
A hearth extension projecting a minimum of
16" in front of and a minimum of 8" beyond
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SURWHFWFRPEXVWLEOHÀRRUFRQVWUXFWLRQLQIURQW
RI¿UHER[VHH)LJXUH)DEULFDWHDKHDUWK
extension using a material which meets the
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-
bustible, inorganic material having a thermal
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less) at 1" thick. For example, if the material
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[ WKLFNQHVVUHTXLUHG
NONCOMBUSTIBLE
HEARTH EXTENSION
52
1
/
2
" MIN.
(133.3cm)
36
1
/
2
" MIN.
(92.7cm)
8" MIN.
(20.3cm)
16" MIN.
(40.6cm)
Figure 10 - Hearth Extension
Thermal conductivity "K" of materials can be
obtained from manufacturer or supplier of
noncombustible material.
If hearth extension is to be raised, a “Z” type
ember protector must be used (see Figure 7,
page 5, and Figure 11)
