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127023-01A
6
DRAIN PAN (DP36)
For outdoor installations, the fireplace enclo
-
sure must allow for adequate drainage and
fresh air ventilation. It is recommended that
a sealed, corrosion resistant catch pan with
provision for drainage be installed under the
fireplace within the fireplace enclosure (see
Accessories
on page 21).
HEARTH EXTENSION
A hearth extension projecting a minimum of
16" in front of and a minimum of 8" beyond
each side of fireplace opening is required to
protect combustible floor construction in front
of fireplace. Fabricate a hearth extension
using a material which meets the following
specifications: a layer of noncombustible,
inorganic material having a thermal conductiv
-
ity of K=0.84 BTU IN/FT, HR. F (or less) at 1"
thick. For example, if material selected has
a K factor of 0.25, such as glass fiber, the
following formula would apply:
0.25 x 1.0" = 0.30" thickness required
0.84
Thermal conductivity "K" of materials can be
obtained from manufacturer or supplier of
noncombustible material. If hearth extension
is to be covered, use noncombustible mate
-
rial such as tile, slate, brick, concrete, metal,
glass, marble, stone, etc. Provide a means
to prevent hearth extension from shifting and
seal gap between fireplace frame and hearth
extension with a noncombustible material
(see Figure 3).
FIREPLACE INSTALLATION
Figure 3 - Hearth Extension
Seal Gap
Fireplace Front
Ember Protector
Fireplace Front
Raised Hearth
Fireplace Front
Elevated
Ember Protector
Ember Protector
Seal Gap
Hearth
Extension
WARNING: Hearth extension
is to be installed only as shown
in Figure 3.
