8
Chimney System Heights
When installed, the
maximum
overall height of the chimney
system from bottom of fireplace to the top/termination chimney
is 40 feet.
The
minimum
installed height of the completed Chimney
System is 14 feet with a straight flue stack, 17 feet if the
chimney includes one or two offset sections.
Supporting Floor Systems
It is the ultimate responsibility of the installer to ensure that
proper concrete slab supports are used.
Supporting concrete floors need to be rated at ASTM 90.
WARNING
to the licensed design professional and/or building
contractor: It is your responsibility to be certain that the
Mason-Lite can be properly supported by the combustible
floor system on which the fireplace will rest.
48 3/4"
8"
12"
Figure 7
Floor framing anchor rods see Figure 11 for support of
anchor rods by the steel support frames.
For fireplace support foundations installed on concrete refer to
Appendix I and II (
pages 20 & 21
) for specific instructions.
Rebar locations
Lay-out the position of the fireplace and drill holes where
the rebar will be located. Secure eight #3 rebar 4 inches into
concrete foundation with ITW Epoxy or Simpson Epoxy.
Follow manufacturer’s instructions for installation of rebar into
slab.
Wood Floor
Anchorage of fireplace to wood floor construction is required.
Refer to
Figure 11
for anchorage locations. Four anchors are
required to attach to the sub-flooring framing.
Figure 8
Floor Sheathing
not shown for
clarity
Metal Base
Assembly
EXAMPLE ONLY
2X FLOOR JOIST
2X FLOOR JOIST
A35 Brackets
(16 required)
I-Jo
ist
Simpson
Strong-Tie
A-35 or
equivalent
Figure 9
I-Joist Anchoring
Top View
Example Only
I-JOISTS
Anchor
Brackets
Figure 10
I-Joist
Anchoring
Bottom
View
Example Only
Installing the Gas Fireplace
