Assemble The Chimney Sections; Install The Ceiling Firestops - Heat & Glo MONTANA-42C Owner's Manual

C. Assemble the Chimney Sections
Attach either a straight chimney section or an offset to the
top of the fi replace (depending on your installation require-
ment). Chimney sections are locked together by pushing
downward until the top section meets the stop bead on the
lower section.
The inner fl ue is placed to the inside of the fl ue section below
it. The outer casing is placed outside the outer casing of the
chimney section below it. See Figure 5.2.
Figure 5.2 Assembling Chimney Sections
Note: Inner flue and outer liner sections cannot be
disassembled once locked together. Plan ahead to ensure
the proper installation height is achieved with the selected
chimney components.
WARNING
Fire Risk
Do NOT install substitute or damaged
chimney components.
• MUST use chimney system described in
this manual.
• NO OTHER chimney components may
be used.
Substitute or damaged chimney components
may impair safe operation.
D. Install the Ceiling Firestops
• Mark and cut an opening in the ceiling for the ceiling
fi restop being used. See Figure 5.3.
• Frame the opening with the same size lumber used in the
ceiling joists.
• Install the ceiling fi restop.
Heat & Glo LifeStyles Collection • Montana-42C • 4039-155 Rev D • 03/06
Note: The ceiling fi restop
of the ceiling joists EXCEPT when the space above is
uninsulated and the attic insulation shield is not being used
(see Figure 5.5). When the attic insulation shield is used
the ceiling fi restop may be above or below the joist of an
insulated ceiling.
ROOM ABOVE (non-insulated ceiling)
B
Ceilng firestop from
bottom
ATTIC ABOVE (insulated ceiling)
Ceiling firestop from
top
Note:
Use same dimensional lumber for framing
ceiling firestop and joists.
Catalog #
FS538 0-deg.
FS540 30-deg.
Figure 5.3 Installing the Ceiling Firestop
Note: You must provide support for the pipe during
construction and check to be sure inadvertent loading has
not dislodged the chimney section from the fi replace or at
any chimney joint.
CAUTION
• Ceiling fi restops must be used at ceiling/fl oor.
• Chase construction requires ceiling fi restops at each
fl oor or every 10 ft ( 3.05 m) of clear space.
• Use same dimensional lumber as joists.
Ceiling fi restop slows spread of fi re and reduces cold air
infi ltration.
MUST be nailed to the bottom
A
When attic insulation
shield not used
A B
17 in. 432 mm
26 in. 660 mm
17