W415-0711 / D / 05.09.13
17
EN
The first flue offset closest to the top of the unit must
be a minimum distance of 12" (304.8mm) 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
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 JOISTS.
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.
Attic Insulation
Shield
Storm Collar
Elbow
Elbow Support
Straps
Elbow
Roof
Flashing
Rain Cap
Elbow Support
Band
Roof Joist
Chimney Section
Floor , Ceiling Joist
If the offset length is
more than 36”
(914.4mm), an
intermediate support
must be employed.
To achieve longer
offsets, you may
install any available
length of chimney
pipe between the
elbows.The
intermediate support
must be used in
conjunction with an
offset support.
Firestop
63.6A
4.4 OFFSET CHIMNEY INSTALLATION
