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fixation. The ceiling adaptor is not designed to
support the weight of the chimney.
8.2 Radiation shield/firestop: Install a radiation
shield/firestop around the chimney where it
passes through the ceiling. Insulation material
must not come in contact with the chimney.
9. Chimney - Cathedral Ceiling
9.1
Cathedral ceiling adaptor (Drawing 8):
The cathedral ceiling adaptor is 17" (432 mm)
wide by 16" (407 mm) deep. You will need to
pierce an opening in the ceiling of the same
dimensions measured from the wall. Anchor the
cathedral adaptor with screws on the inside of the
cathedral adaptor box. Fix the screws on the
adjacent wall and on wood support pieces
installed for that purpose in the ceiling.
cathedral adaptor is not designed to support the
weight of the chimney.
9.2 Decorative collar: Three 3" wide (75 mm)
finishing strips of adjustable length are supplied
with the fireplace to provide a finishing touch and
conceal the joint between the ceiling and the
cathedral adaptor.
9.3 Rigid rockwool insulation: Install the rigid
insulation pads that are supplied with the
fireplace inside the cathedral adaptor. Do not
completely fill the cathedral adaptor with the
insulation. There must always be at least 2" (50
mm) free for air space between the insulation and
the chimney.
10. Factory-built chimney installation
10.1 Listed parts: For the installation of the
chimney, use only ULC or UL listed parts
supplied by the chimney manufacturer.
10.2 Manufacturer's instructions: The
installation must follow the instructions in this
manual and the chimney manufacturer's
instructions. If there is a conflict, you must follow
the more restrictive measures.
REV. 2014-11
10.3 Obstructions:
the chimney and the mandatory 2" (50 mm)
minimum clearance, the joist should be moved or
cut. In either cases, the structure must be
reinforced to maintain its solidity.
cables or plastic plumbing pipes are in the way, a
specialized contractor should remove them..
10.4 Maximum allowed offsets: Don't install
more than 4 elbows in the chimney.
cannot be more than 45 degrees from the vertical
axis. The sum of all offsets (elbows) must never
exceed 120 degrees.
allowed offsets would include: Four 30-degree
Chimney minimum height above
the roof
The
DRAWING 9
elbows (4x30=120) or two 45-degree elbows plus
two 15-degree elbows (2x45+2x15=120).
10.5 Chimney weight:
supported at regular intervals according to the
instructions of the chimney manufacturer.
weight must never rest on the fireplace or on the
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If a joist obstructs the path of
For example, maximum
10 feet (3 m) radius
Warning: Lateral roof braces need to
be installed when the unsupported
chimney height above the roof
is more than 6 feet (2 m).
The chimney must be
If electrical
Offset
2 feet min.
(610 mm) min.
Its
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