General Information
The MAGNUM replace and DM 54 chimney system
is a prefabricated, refractory modular replace and chimney
system designed for eld assembly. The system consists of
interlocking precast parts which are glued together with a ma-
sonry adhesive.
The parts of the MAGNUM replace and DM 54
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 rebox, smoke dome and
chimney system.
Each MAGNUM precast replace component is
designed for a specic part of the replace such that only one
means for assembly is possible.
The rebox and smoke dome are designed to be tted
with a traditional cast iron, poker-style throat damper. How-
ever, chimney top dampers are an option.
The MAGNUM replace requires a standard refrac-
tory re brick liner be applied to the interior of the rebox. Fire
brick must be a minimum thickness of one and one-eighth inch
(1-1/8”).
The MAGNUM replace is available in six sizes:
twenty-eight inch (28”), thirty-six inch (36”), forty-two inch
(42”), forty-eight inch (48”), sixty inch (60”) and seventy-two
inch (72”).
All units have a thirty-eight inch (38”) rough opening
height before re brick. The only parts which differ among the
available sizes are width related pieces: the base plate, rebox
back wall, front and back smoke dome components, and the
smoke dome top plate. All units use the same side wall pieces.
The DM 54 chimney system is a dual module refrac-
tory chimney system. The basic chimney consists of an outer
casing block and an inner liner with a fourteen inch (14”) di-
ameter ue hole. The chimney components are eld assembled
using Earthcore Mortar to glue the components together.
The DM 54 chimney system also includes an offset
chimney block component, used to create offsets to the verti-
cal run of the chimney. A brickledge component is available,
designed to support chimney top brick veneer nishes.
Prefabricated masonry chimney termination caps are also avail-
able.
The various MAGNUM replace and DM 54 chimney
components will be described and illustrated in the follow-
ing pages. Close attention should be paid to each component
group’s specications and installation requirements as de-
scribed in this manual.
Important: Due to heat and weight issues, the MAGNUM
Series replace and DM 54 chimney system installations re-
quire that the system be built upon a non-combustible concrete
slab with no wood underpinnings supported to footings with
concrete or steel and designed to carry the total weight of the
Isokern replace and chimney system.
The Fire-Lite application of the MAGNUM Series replace is
designed to be built upon a combustible oor system
and will also require a design that will support the total weight
of the Isokern replace and chimney system. The FTF-13 or
equivalent chimney system only must be used with the Fire-Lite
application. Please refer to pages 56-81 for installation instruc-
tions.
Recommended minimum overall height for the
MAGNUM Series and DM 54 chimney system for an indoor
application are 18’-0” when the chimney is straight and 21’-0”
when a chimney is offset. Maximum overall height is 82’ - 0”,
however, installations over 57’ - 0” will require additional
support.
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