FMI MASONRY FIREBOX MM33 - Manual (Page 28)

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Fireplace installation
Continued
InsTallInG daMPeR / anCHoR PlaTe
(MM12aP) FoR PRe-FaBRICaTed CHIMneY
sYsTeM
All chimney systems must be installed with an inte-
grated Damper System / Anchor Plate installed on
top of the fireplace. Installers are cautioned to put the
chimney system together exactly as instructed in the
Venting Installation on page 12. Any variations may
have serious consequences resulting in an accident
or malfunction. If instructions are not followed, the
warranty on the product will become null and void.
Apply a 1" thick ceramic fiber blanket (Included) to
the bottom of the anchor plate.
Apply balance of gasket cement in a ¼" bead on top
of smoke dome approximately 1½" around periphery
of chimney hole. Install damper assembly on top of
unit pressing damper and insulation blanket into ce-
ment (Figure 47). Secure with four 3/16" X 1¾" ma-
sonry screws (included).
1" ceramic fiber blanket
under Anchor Plate.
Secure with
four 1/4" x
1-1/4"masonry
fastener.
1/4" bead of
gasket cement
Figure 47 - Installing Anchor Plate
Place chimney adapter onto top of damper plate and
center in opening using gasket supplied with adapt-
er.
Attach adapter with screws supplied by carefully drill-
ing holes into damper plate.
Attach damper chain stop on center rear of lintel 3”
(three inch) vertical from opening using (3) #8 ce-
ment fasteners.
aTTenTIon: Clearance to combustible construction
cannot be reduced during course of construction.
For the safe operation of the finished fireplace, these
clearances must be followed when building the
framework for the chimney system.
NOTE: The most important aspect of the installation
is maintaining the minimum required clearances to
combustible materials according to the chimney pipe
manufacturer’s recommendations, otherwise a po-
tential fire hazard may occur.
WaRnInG: do not interchange chimney parts
with any other parts except those specifically
required by FMI PRodUCTs, llC otherwise a
potential hazardous condition may be created.