Floor Protection - Monessen Hearth HWB700HB Installation, Operation And Maintenance Manual

F P
LOOR ROTECTION
If this fireplace is installed on a combustible floor, the floor area 20 inches in front of, and 12 inches either side
of the fireplace opening must be protected by an insulating noncombustible hearth extension. This hearth
extension may be either minimum 6-inch thick stone or brick as shown by Figure 9, an H2068 hearth extension
kit or a locally constructed equivalent to the H2068.
The H2068 hearth extension kit consists of sufficient insulation board to cover the 20" x 68" floor area with ˚
inch layer of insulation. A 20" x 68" piece of galvanized steel is included in the kit to cover the insulation before
a finishing layer of noncombustible material of stone, brick, tile, etc., is applied to finish the hearth extension.
The insulation used in the H2068 hearth extension has a thermal conductivity (K factor) of 0.43. If you do
construct a hearth extension equivalent to the H2068, 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 1/2" covering provided by the H2068.
F 9
IGURE
SB5400SS SB5400SS
FIREPLACE FIREPLACE
HEARTH HEARTH
SAFETY STRIP IS REQUIRED WHEN SAFETY STRIP IS REQUIRED WHEN
UNIT IS PLACED ON A COMBUSTIBLE FLOOR UNIT IS PLACED ON A COMBUSTIBLE FLOOR
OR PLATFORM. OR PLATFORM.
FIREPLACE AND HEARTH EXTENSION AND TOP VIEW FIREPLACE AND HEARTH EXTENSION AND TOP VIEW
F 10
IGURE
12" 12"
SB5400SS MINIMUM HEARTH EXTENSION DIMENSIONS
9
53D9036. Rev 1 03/03
12"
(MIN.)
H2068 HEARTH EXTENSION H2068 HEARTH EXTENSION
OR EQUIVALENT OR EQUIVALENT
68" 68"
12"
(MIN)
20"
(MIN)
6"
(MIN)
BRICK OR STONE HEARTH BRICK OR STONE HEARTH
EXTENSION - 68" LONG MIN. EXTENSION - 68" LONG MIN.
NOTE: A hearth extension placed on a combustible NOTE: A hearth extension placed on a combustible
floor must be constructed with rigid insulation which floor must be constructed with rigid insulation which
has a minimum "R" value of 1.16 or a "K" value of has a minimum "R" value of 1.16 or a "K" value of
0.43. The insulation must be covered with a 0.43. The insulation must be covered with a
non-combustible covering such as a tile stone, non-combustible covering such as a tile stone,
12" 12"
marble, or a piece of 0.018 minimum sheet metal marble, or a piece of 0.018 minimum sheet metal
20" 20"
which is needed to protect the insulation. Follow which is needed to protect the insulation. Follow
instructions provided with the fireplace for all other instructions provided with the fireplace for all other
specifications and directions for proper installation specifications and directions for proper installation
of the fireplace and hearth extension. of the fireplace and hearth extension.
ALTERNATE BRICK OR STONE ALTERNATE BRICK OR STONE
HEARTH EXTENSIONS FOR USE HEARTH EXTENSIONS FOR USE
WITH THE SB5400SS FIREPLACE WITH THE SB5400SS FIREPLACE
WHEN PLACED OVER A COM- WHEN PLACED OVER A COM-
BUSTIBLE FLOOR WITHOUT BUSTIBLE FLOOR WITHOUT
INSULATION BOARD PROTECTION INSULATION BOARD PROTECTION