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38
”
24
”
12"
33"
12”
COMBUSTIBLE
MANTLE SHELF
33” HEARTH
EXTENSION
COMBUSTIBLE
FLOOR SYSTEM
ADJOINING
ROOM WALL
HEARTH
EXTENSION
9”
3”
48”
Non-combustible Finished Facing requirements &
Clearance to Combustible Trim
Hearth Extensions:
All Magnum 86072 Series fireplaces shall have hearth
extensions of brick, concrete, stone, tile or other code approved
noncombustible material. Suitable hearth extension material for
the Magnum 86072 Series fireplace shall be placed on the hearth
extension’s noncombustible substrate and must extend to at
least thirty three inches (33”) in front of the fireplace’s finished
opening and must extend to at least twelve inches (12”) beyond
the sides of the finished fireplace opening. (Figure 74 & 75)
WARNING:
The noncombustible hearth extension, by code,
must sit on noncombustible substrate which shall have no wood
underpinnings.
This means that off-grade wood floor systems shall be
constructed in such a way that all wood floor joists and
subflooring shall stop thirty three inches (33”) out from the front
of the Magnum 86072 firebox. (Figure 75)
Mantle and Mantle Shelf Clearances:
Magnum 86072 Series
fireplaces are subject to the same building code safety clearances
to combustible trim as with any radiant heat fireplace.
All combustible trim shall be kept at least nine inches
(9”) from the finished fireplace opening. Combustible trim
located along the sides of the fireplace opening, which project
more than one and one-half inches (1-1/2”) from the face of the
fireplace, shall have additional clearance from the nine inches
(9”) equal to the projection. Combustible projecting mantles
up to twelve inches (12”) of projection - shall not be placed
less than thirty eight inches (38”) from the top of the fireplace
opening. Combustible mantles which project more than twelve
inches (12”) from the face of the fireplace, shall have additional
clearance from the thirty eight inches (38”) equal to the
projection.
Note:
The local authority having jurisdiction may require
greater clearances for projection combustible mantle shelves. Be
sure to check local building codes regarding required clearances
to projecting combustible mantles.
Adjoining Walls.
Side walls and walls to rooms adjoining the
Magnum 86072 Series fireplace installations cannot be closer
than forty eight inches (48”) to the finished fireplace opening.
(Figure 75)
Note:
“Clearance to Combustible Trim” are those distances
required to ensure that a fireplace mantle or facing will not
catch fire. In most cases the distances should also be adequate
to prevent any discoloration or warping due to heat. However
each installation presents a unique and completely different set
of circumstances involving many variables.
These include paint or finish composition, previous
exposure to heat, methods and quality of construction, air flow
patterns, etc. Because of these variables, the manufacturer does
not guarantee that heat warping or discoloration will never
occur.
33
FIGURE 74
FIGURE 75
Содержание Magnum 86072-60
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