Offset Chimney Installation - Napoleon NZ-26 Installation And Operating Instructions Manual

4.3

OFFSET CHIMNEY INSTALLATION

CHIMNEY SECTIONS INSTALLED BETWEEN AN OFFSET AND RETURN REQUIRE STRUCTURAL
SUPPORT TO REDUCE OFF-CENTER LOADING AND TO PREVENT CHIMNEY SECTIONS FROM
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.
The first flue offset closest to the top of the unit must
be a minimum distance of 12" from the top of the
appliance.
Attach an elbow to the chimney section, angled
toward the offset. Secure with 3 sheet metal screws.
To achieve the minimum offset, attach and secure a
second elbow. To achieve longer offsets, you may
install any available length of chimney pipe between
the elbows. Supports must be used on the first vertical
chimney section after a return elbow.
WARNING
!
SEPARATING AT THE CHIMNEY JOISTS.
Storm Collar
Roof Joist
Chimney Section
Elbow Support
Straps
Elbow
Firestop
15
Rain Cap
Roof
Flashing
Attic Insulation
Shield
Elbow Support
Band
Elbow
Floor , Ceiling Joist
If the offset length is
more than 36", an
intermediate support
must be employed.
The intermediate
support must be
used in conjunction
with an offset
support.
W415-0676 / A / 06.07.10