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W415-0676 / 03.14.08
12
1. Move the fi replace into position. Try to centre the exhaust fl ue of
the fi replace, midpoint between two joists to prevent having to cut
them. Use a plumb bob to line up the centre.
2. Cut and frame an opening in the ceiling to provide a minimum clear-
ance of 2" between the outside of the chimney and any combustible
material. DO NOT FILL THIS SPACE WITH ANY TYPE OF MATE-
RIAL! Nail headers between the joists for extra support. Firestop
spacers must be placed on the bottom of each framed opening in
any fl oor or ceiling that the chimney passes through.
3. Hold a plumb bob from the underside of the roof to determine
where the opening in the roof should be. Cut and frame the roof
opening maintaining proper 2" clearances.
FIGURE 14
OFFSET CHIMNEY INSTALLATION
ADDING CHIMNEY SECTIONS
* The fi rst fl ue offset closest to the top of the unit must be a
minimum distance of 12" from the top of the fi replace.
NOTE: 30° or 45° offsets may be installed back to back.
FIGURE 15
Add chimney sections, twist locking (clockwise) securely, to the
required height. Use a rafter radiation shield whenever the chimney
system is enclosed within an attic area.
The fi rst fl ue offset closest to the top of the unit must
be a minimum distance of 12" from the top of the fi re-
place.
An insulated elbow must be used when it becomes necessary to
offset the chimney in order to clear a joist or to pass through an
upstairs closet.
Attach an elbow to the chimney section, angled toward the offset.
Secure with 3 - #8X1/2" sheet metal screws. To achieve the mini-
mum offset, attach and secure a return elbow to the fi rst. To achieve
longer offsets, you may install any available length of chimney pipe
between the elbows.
Supports must be used on the fi rst vertical chimney section after a
return elbow.
FIGURE 16
FIGURE 13 - 4 ELBOWS
FIGURE 12 - 2 ELBOWSFIGURE 11 - STRAIGHT UP
No Off-Set. Minimum overall chimney height
is 11 feet.
Single off-set with two 15°, 30° or 45°
elbows. Minimum overall chimney height
is 11 feet.
Double off-set with four 15°, 30° or 45°
elbows. Minimum overall chimney height
is 11 feet.
!
WARNING
Chimney sections installed between an offset and return require
structural support to reduce off-center loading and to prevent
chimney sections from separating at the chimney joints.
The chimney should not be built with an offset angle in excess of
45° in Canada and 30° in USA. Do not combine offset chimney
components to exceed these angles.
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