Floor Protection - Vermont Castings SB38 Nstallation, Operation And Maintenance Manual

floor protectioN

If this fireplace is installed on a combustible floor, the floor
area 0 inches in front of, and 1 inches either side of the
fireplace opening must be protected by an insulating non-
combustible hearth extension. This hearth extension may
be either minimum 6-inch thick stone or brick as shown
by Figure 13, an H066 hearth extension kit or a locally
constructed equivalent to the H066.
The H066 hearth extension kit consists of sufficient in-
sulation board to cover the floor area with 1/" inch layer
of insulation. A piece of galvanized steel is included in the
kit to cover the insulation before a finishing layer of non-
combustible material of stone, brick, tile, etc., is applied to
finish the hearth extension.
Figure 13
Hearth
12"
Min.
Safety Strip is Re-
quired When Unit
is Placed on a
Combustible Floor
or Platform
Figure 15
top view
fireplace and hearth
extension
87D0057
Alternate brick or stone hearth
extensions for use with the SB38/
SB44
placed over a combustible floor
without insulation board protec-
tion.
12"
Min.
Brick or Stone Hearth Extension
- SB38/38HB 6" Long Min.
- SB44/44HB 68" Long Min.
FP38
FP2238
SB5400 dec hearth
12"
SB38/38HB - 6" Min.
SB44/44HB - 68" Min.
Minimum Hearth Extension Dimensions
FP2239
SB5400
hearth protection
SB38 / SB44 Series Woodburning Fireplace
The insulation used in the H066 hearth extension has a
thermal conductivity (K factor) of 0.43. If you do construct
a hearth extension equivalent to the H066, be sure the
insulation you use has enough compressive strength to
support the weight of the covering materials and persons
standing on it, and insulating qualities equal to or better
than the 1/" covering provided by the H066.
Series fireplace when
20" Min.
6" Min.
FP39
12"
Screened Opening
cautioN: Do not
place finishing materials
beyond these edges or
cover air inlets
cautioN:
only brick or other noncombustible materials
may be placed in front of, or in contact with
the black face of the fireplace.
Figure 14
FP1168
finishing front
12/20/01 djt
Note: A hearth extension placed on a
combustible floor must be constructed
with rigid insulation which has a mini-
mum "R" value of 1.16 or a "K" value of
0.43. The insulation must be covered
with a noncombustible covering such as
a tile, stone, marble, or a piece of 0.018
minimum sheet metal which is needed
20"
to protect the insulation. Follow instruc-
tions provided with the for all other
specifications and directions for proper
installation of the fireplace and hearth
extension.
Screen
Rail
Hearth
FP1168
13