14
87D0174
SSTB11 Woodburning Fireplace
CHIMNEY INSTALLATION
To install the chimney support, place the crimped end of
the flue and outlet air duct portions into the last section
of chimney pipe. Push down until the outside or inlet air
duct of the chimney support overlaps and snap locks the
chimney support into the chimney section.
Nail the support straps tightly to a building frame member
or ceiling joist as shown by
Figure 14
. You must use at
least two 8-penney nails per strap.
Elbow Installation
The following are important points that should be ob-
served when installing elbows on the fireplace:
1. The support straps of all elbows not installed directly
on top of the fireplace should be nailed securely to the
surrounding structure. This allows the support strap to
carry the weight of the chimney above the elbow and
prevents this weight from breaking the elbow or chim-
ney sections apart.
2. Elbows should not be used in any combination that
inclines the chimney more than 30 degrees from verti-
cal.
3. The limitations on the quantity of elbows per chimney
are as follows: If the total height of the fireplace and
chimney is—13’ or more — two (2) elbows may be
used in the chimney. 21’ or more — four (4) elbows
may be used in the chimney.
4. The inclined portions of chimneys that pass through
living spaces likely to be used for storage should be
enclosed to avoid contact with and possible damage to
the chimney. The minimum air space of 2” between the
chimney and enclosing materials must be maintained.
5. The length of the inclined portion of chimney between
elbows must not exceed 6’ when unsupported or 20’ if
the chimney is supported at 6’ intervals with support
such as metal support straps.
6. When enclosing the elbows and inclined portions of
the chimney, enclosing materials must be installed ver-
tically to maintain the required 2” minimum air space
clearance to the chimney at the extremities of the off-
set. It is recommended that enclosing material not fol-
low the inclined portions of the chimney.
&0
ELBOW
Figure 15
Inlet Air
Pipe
Flue
All four (4) support straps must
be nailed on to framing mem-
ber around the elbow with a
minimum of two (2) 8-Penny
nails per strap
NOTE:
Although both halves of the
elbow set may have tie straps, only
the top half must be secured. The
bottom elbow half is not required to
be secured for added stabilization of
pipe.
FP1893
Offset Installation Sequence
1. Determine the location and amount of offset required,
then select the combinations of chimney sections and
elbows required from the offset chart.
Refer to Page
15
.
2. Install the first elbow by placing the extended flue into
the mating part of the fireplace or chimney section.
Push down until the outside or inlet air duct of the el-
bow overlaps and the snaps lock the elbow into the
fireplace or chimney section.
3. Nail the support straps to the framing member with a
minimum of two 8-penny nails per strap.
4. Install the sections of pipe between elbows until the
proper number of chimney sections have been in-
stalled.
5. Install the second elbow to return the run of the chim-
ney to vertical.
6. Nail the support straps of the second elbow to a build-
ing frame member.
7. Continue installing the vertical portion of the chimney.
NOTE:
If the inclined portion of the chimney passes
through a floor or ceiling, a firestop spacer should be in-
stalled to provide the firestop and support required. Be
sure proper spacing in maintained between the chimney
and combustibles.
