General Information
The Magnum 86072 Series fireplace and DM chimney
system is a prefabricated, refractory modular fireplace and
chimney system designed for field assembly. The system
consists of interlocking precast parts which are glued together
with a masonry adhesive.
The parts of the Magnum 86072 Series fireplace and
DM chimney system are precast using a proprietary mixture of
volcanic pumice aggregate and cement. It includes all the parts
necessary for assembly of a complete firebox, smoke dome and
chimney system.
Each Magnum 86072 precast fireplace component is
designed for a specific part of the fireplace such that only one
means for assembly is possible.
The firebox and smoke dome are designed to be fitted
with a traditional cast iron, poker-style throat damper. However,
in-line or chimney top dampers are options.
The Magnum 86072 Series fireplace requires a
standard refractory fire brick liner be applied to the interior
of the firebox. Fire brick must be a minimum thickness of one
and one-eighth inch (1-1/8”) on the floor and back walls. A
minimum four inch (4”) fire brick must be applied to the side
walls.
The Magnum 86072 Series fireplace is available in
two sizes: sixty inch (60”) and seventy-two inch (72”).
All units have a thirty-eight inch (38”) rough opening
height before fire brick. The only parts which differ among the
available sizes are width related pieces. All units use the same
side wall pieces.
The DM chimney system is a dual module refractory
chimney system. The basic chimney consists of an outer casing
block and an inner liner. Two (2) flues are necessary on the 86072
model without a mechanical drafting system. It is acceptable
to use mechanical draft systems, if the venting companies
do the engineering calculations and make the necessary
recommendations for fan size and flue vent diameter following
the guidelines of NFPA 211/2006, pg. 211-13. Installation
of such systems must also follow the mechanical drafting
company’s explicit installation and operation instructions.
“Smoke free” operation is not warranted nor is the
manufacturer responsible for inadequate system draft caused
by mechanical systems, general construction conditions,
inadequate chimney heights, adverse wind conditions or
any unusual environmental conditions or factors beyond the
manufacturer’s control. The chimney components are field
assembled using Earthcore Mortar to glue the components
together.
The DM chimney system also includes an offset
chimney block component, used to create offsets to the vertical
run of the chimney. A brickledge component is available,
designed to support chimney top brick veneer finishes.
Prefabricated masonry chimney termination caps are also
available.
The various Magnum 86072 Series fireplace and
DM chimney components will be described and illustrated in
the following pages. Close attention should be paid to each
component group’s specifications and installation requirements
as described in this manual.
Maximum overall height for the Magnum 86072
Series and
DM chimney system
for an indoor application is
22’-0” without additional structural support. This restriction
does not apply for metal chimney systems.
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