Napoleon NZ-26 Installation And Operating Instructions Manual page 13

Factory-built chimney systems for use in dwellings constructed for three or more families must be enclosed
above the room in which the appliance is located. This enclosure must have a fi re resistance rating equal to or
greater than that of the fl oor or roof assembly through which they pass.
The chimney should not be built with an offset angle in excess of 45° in Canada and 30° in USA.
Ensure that minimum clearances are maintained.
Portions of the chimney that extend through accessible spaces must always be encased to avoid personal
contact with the chimney and thereby avoid damage to the chimney.
The chimney must be supported at a maximum of 20 foot intervals (approx. 200 lbs/20 FT).
MINIMUM
MAXIMUM
STRAIGHT CHIMNEY
* The fi rst fl ue offset closest to the top of the appliance must be a minimum distance of 12" from the
top of the appliance.
1. Move the appliance into position. Try to center the exhaust fl ue of the appliance,
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 clearance of 2" between the outside of the
chimney and any combustible material. DO NOT FILL
THIS SPACE WITH ANY TYPE OF MATERIAL! Nail
headers between the joists for extra support. Firestop
spacers must be placed on 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.
NOTE: 30° or 45° offsets may be installed back to
back.
11 FT
34 FT
SINGLE OFFSET
CHIMNEY
63.4
11 FT
MINIMUM
34 FT
MAXIMUM
*
DOUBLE OFFSET
CHIMNEY
HEADERS
FIRESTOP SPACER -
UNDERSIDE OF JOIST
2"
2"
Min
Min
Typical Joist Framing
63.1_2B
13
11 FT
MINIMUM
34 FT
MAXIMUM
*
2"
Min
2"
Min
Typical Roof Joist
Framing
W415-0676 / A / 06.07.10