12
424WBST Designer Woodburning Fireplaces
87D1506
Installing the Chimney System
Start by attaching the first chimney section to the collar
on top of the fireplace.
Install the pipe as pictured in Figure 16. When you
get a good lock, you will hear the pipe clearly snap
together. Once sections are snap-locked in place, it is
extremely difficult to get them apart.
Make sure the
pipe is firmly snapped and locked together as each
pipe section is mounted.
When installing elbows, only outer pipe will snap-
lock. Middle pipes simply slide into position. Be sure
to always attach straps on upper elbow to a structural
framing member. (Fig. 17)
Continue installing the pipe as required until pipe is
installed up through the ceiling. At this point, you must
install a firestop spacer. Refer to Figure 18 for appropri-
ate spacer orientation.
Installing the Firestop Spacer
in the Ceiling Hole
A firestop spacer is used to keep pipe spaced properly
and required for safety.
Nail the firestop spacer (at each corner) to the framing
members of the ceiling hole.
NOTe:
A firestop spacer
is not required at the roof.
Hole sizes listed in Figure 12 for angled firestop spac-
ers provide minimum required air space to chimney
pipe for ceiling thickness up to 8" (203 mm). When
combined thickness of ceiling material, ceiling joists and
flooring material exceeds 8" (203 mm), adjustments
must be made in framing to assure that minimum air
spaces to chimney are maintained.
Proper Firestop Spacer Installation
Figure 18 shows different installation procedures for
both an area that
is
an attic and an area that
is not
an
attic.
If the area above the ceil-
ing
is not
an attic, posi-
tion the firestop spacer
with the flange on the ceil-
ing side and the angled
portion extending up into
the hole.
If the area above the
ceiling
is
an attic, position
the firestop spacer with
the flange on the top of
the framed hole and the
angled portion extending
down into the hole.
FP711
Fig. 16
Install pipe, listening for the snap-lock to fasten.
UP
Lance
Hem
Pipe Rim
Pipe
Rim
WF711
STR/CVR
5/28/98
Pipe Section
Fig. 17
Attach straps to a structural framing member.
FP270/271
FP270/271
CR Series
2/19/99 djt
elbow Strap
Support Structure
Elbow Strap
(must be tight)
Ceiling
Hole Fram-
ing
Angle Firestop
Chimney Support
Strap
(must be tight)
Angled Strap
FP593
SR/C
11/20/97
Attic Installation
Ceiling Installation
Fig. 18
Installing firestop spacer.
FP593
Nails (4)
Firestop
Spacer
Joist
Joist
Firestop
Spacer
Nails (4)
NOTe:
If the attic insulation shield is used, the
firestop is not required in the attic installation.
