Ceiling Support Fastening; Outside Air Intake (Ventilated Support); Chimney Start; Factory-Built Chimney Installation - Les Foyers Don-Bar 9000 Installation, Operation And Maintenance Manual

6.2 Ceiling support fastening : Secure the
ceiling support to the wood frame with 8 long
bolts at least 1,5" (40 mm) long by 5/16" (8 mm)
diameter (2 long bolts per side).
6.3 Outside air intake (Ventilated cathedral
support only) : The diameter of the outside air
intake is 6" (150 mm) to connect an insulated
flexible duct to supply outside air to the fireplace
if required.
6.4 Chimney start: Begin the installation of the
chimney by slipping the first chimney section into
the cathedral ceiling support. Be sure the chimney
fits well into the ceiling support before
proceeding with other chimney sections. Never
let the attic insulation be in contact with the
chimney. Always allow a 2" (50 mm) minimum
air space between the chimney and adjacent
materials.

7. Factory-built chimney installation

Listed parts: Use only ULC or UL listed
7.1
parts supplied by the chimney manufacturer when
installing the chimney.
7.2 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.
7.3 Obstructions: If a joist obstructs the path
of the chimney and the mandatory 2" (50 mm)
minimum clearance, the joist should be moved or
cut. In either cases, the structure must be
reinforded to maintain its solidity.
engineering help if you are not absolutely certain
of what you are doing. If electrical cables or
plastic plumbing pipes are in the way, a
specialized contractor should remove them.
Maximum allowed offsets: Don't install
7.4
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. For example, maximum
REV. 2014-10
Chimney minimum height above
the roof
DRAWING 8
allowed offsets would include: four 30-degree
elbows (4x30=120) or two 45-degree elbows plus
two 15-degree elbows (2x45+2x15=120).
7.5

Chimney weight:

chimney may rest in part on the ceiling support.
However, offset supports must be installed above
and as close as possible to each offset (elbow) in
the chimney. Also install extra chimney supports
at the intervals required by the chimney

manufacturer's instructions.

Seek
7.6 Radiation shield/firestop: Install a radiation
shield/firestop every time the chimney passes
through a combustible wall or ceiling.

7.7 Minimum chimney height above the roof:

Extend the chimney at least 3 feet (1 m) above
Offsets
the roof or 2 feet (610 mm) above any
construction element within 10 feet (3 m) of the
chimney.
Page 10
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 weight of the
2 feet min.
(610 mm) min.