Bellfires BCC-19, Руководство по установке

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Bellfires® BCC
16
Hearth Extensions
BCC fireplace
front edge
Subfloor
Minimum 20”
Galvanized floor protection
extends beyond BCC front
for 2” to act as ember guard
2”
BCC Insulated Hearth Extension
BCC Flush hearth extension BCC Raised hearth extension
BCC fireplace
front edge
Bellfires® galvanized
floor protection
“Z” strip ember guard
safety strip projecting
minimum 2” under BCC
and minimum 2” on floor
under insulating pad
BCC Insulated Hearth Extension
Hearth Extensions
Combustible floors directly in front of the fireplace
must be protected from sparks, embers, logs rolling out
of the fireplace, and heat by using non-combustible
floor protection–a hearth extension. The BCC 28 fire-
place requires a minimum protection of 20” in front of
the fireplace and 12” inches to each side of the fire-
place firebox opening for a total width of 67
2
”. Local
codes may require even larger dimensions. Total R
value of the non-combustible hearth extension must be
a minimum of R 2.2.
Be certain hearth extensions are securely fastened so
they cannot be moved or easily dislodged and that they
are constructed from durable, non-combustible materi-
als such as brick, tile, slate, etc.
Ember Guards
In many areas ember guards are known as metal seal -
ing strips, or sheet metal bridges. Their function is
critical in pre-fab fireplace installations. If a BCC 28 is
installed on a combustible floor or a combustible
raised hearth, or the hearth extension support is com-
bustible, a metal ember guard strip with a minimum
width of 4” and the full length of the BCC opening
must be placed under the front of the BCC and extend-
ed the same length to the front of the BCC. This is
absolutely necessary to seal the crack between the BCC
and the hearth extension so that embers, coals, sparks,
or ashes cannot come in contact with combustibles in
the area below. In raised hearth designs a special “Z”
strip design will have to be constructed onsite. The
Bellfires® Hearth Extension pad should be laid over the
ember guard and cover the whole area of the hearth
extension, a minimum of 20” deep and 67
2
” wide.
Over this is placed the noncombustible finish hearth
extension material–brick, tile, slate, etc. Finally, a bead
of non-combustible material is used to seal the con-
nection of hearth extension with the BCC.
Noncombustible Decorative Hearth Extension Material
Seal Gap
Noncombustible decorative hearth
material
Seal
gap
16-1
16-2