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01/04 4039-150 Rev B 13
MONTANA INSTALLATION INSTRUCTIONS
Figure 11
Installing the Firestop Spacer
CAUTION:
Firestop spacers must be used whenever the
chimney penetrates a ceiling/floor area.
Figure 10
Assembling Chimney
Sections
WARNING!
Carefully follow the instructions for assembly of the
pipe and other parts needed to install this fireplace
system. Failure to do so may result in a fire,
especially if combustibles are too close to the
fireplace or chimney and air spaces are blocked,
preventing the free movement of cooling air.
4. Assemble Chimney Sections
Attach either a straight chimney section or an offset to the top
of the fireplace (depending on your installation requirement).
Chimney sections are locked together by pushing downward
until the top section meets the stop bead on the lower section.
The inner flue is placed to the inside of the flue section below
it. The outer casing is placed outside the outer casing of the
chimney section below it. See Figure10.
5. Install Firestop Spacers
Mark and cut out an opening in the ceiling for the firestop
spacer being utilized (17 x 17 for an FS538, 17 x 26 for an
FS540). Frame the opening with the same dimension lumber
used in the ceiling joists.
Install the firestop spacer.
These firestop spacers are designed to provide the minimum
2 air space required around the chimney. In all situations,
the firestop spacers are to be nailed to the ceiling joists from
the bottom or fireplace side, EXCEPT when the space above
is an insulated ceiling or attic space. In this situation, the
firestop spacer must be nailed from the top side to prevent
loose insulation from falling into the required 2 air space
around the chimney. See Figure 11.