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INSTALLING THE CHIMNEY SYSTEM
Step 1. Before continuing, check the operation
of the damper.
Step 2. Using standard construction framing
techniques, construct opening for chimney route
up through the ceiling(s) and roof or through an
outside chase.
Framing must maintain adequate minimum air
space clearance at all times.
CAUTION: ALLOW MINIMUM 2" CHIMNEY
AIR SPACE TO COMBUSTIBLE FRAMING MEM-
BERS THROUGHOUT VERTICAL OR OFFSET
CHIMNEY INSTALLATION.
A minimum 2" air space must be reserved for
all combustible materials extending for any
continuous length surrounding the chimney.
Reference Figures 12 and 13 and charts Fram-
ing Dimensions for Ceiling and Roof, which
specify minimum ceiling and roof dimensions.
In new construction, to determine chimney cen-
ter line, use plumb line from roof or ceiling above
fireplace to center of flue collar on fireplace.
For remodeling, plumb to center of flue collar
from ceiling above, drive nail through ceiling
from below to mark position, then mark and
cut to passage from above ceiling (around
nail) ( see Figure 15 ). Then plumb from ceiling
or roof level directly above hole which has just
been completed.
Figure 15
Step 3. Position appropriate firestop spacer at
ceiling and nail temporarily with two (2) 8d
nails. Use flat firestop spacer, Model F8FS-2,
if chimney penetrates ceiling vertically. If chim-
ney penetrates ceiling at 30 angle (offset
chimney), use 30 firestop spacer, Model
F8FS30. Use one nail on opposite sides to hold
firestop spacer in position. Nail permanently,
using at least two (2) more 8d nails, after
chimney sections have been assembled
through the firestop spacer and after any nec-
essary adjustments have been made. Firestop
spacer must be secured by at least four (4) 8d
nails when completely installed.
Note: If there is a room above ceiling level,
firestop spacer must be installed on the bottom
side of the ceiling. If an attic is above ceiling
level, firestop spacer must be installed on top
side of ceiling joist (Figures 16 and 17 ).
Room Above
Figure 16
Attic Above
Firestop Spacer
Figure 17
CHIMNEY 30 OFFSET THROUGH FLOOR
OR CEILING
It may be necessary to assemble the chim-
ney at 30 when passing through the floor or
ceiling area. Use the F8FS30-2 firestop
spacer as shown in Figures 18 and 19 .
Support the chimney at floor or ceiling pen-
etration with a FTF8 stabilizer if distance of
chimney below ceiling is 10' or more. Main-
tain 2" minimum air space to combustibles
from chimney sections.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
F8FS30-2
Firestop Spacer
2" Min.
Air Space
Figure 18
F8FS30-2
Firestop Spacer
2" Min.
Air Space
Figure 19
Required For Canada
Firestop Spacer
When installing the chimney system through
an open attic space, the attic shield assembly-
firestop spacer must be used ( Figure 20 ). This
installation is required only for use in Canada.
Open Attic Space
Figure 20
Note: For Canadian installations, all chimney
installed outside the building must be con-
structed with galvalume (outer sections only).
The appropriate model designations are lo-
cated in the back of this manual.
Note: Attic insulation shield is required in
any installation to insure the 2" air space is
maintained anywhere "blown in" insulation
is used.
Attic Space
2" Min.
Air Space
FTF8-S4 Stabilizer
10'
Max.
30 Firestop
And Attic Above
Room Above
2" Min.
Air Space
FTF8-S4 Stabilizer
30 Firestop
10'
Max.
And Room Above
FTF8-FSAS
11
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