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NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
8
Step 4. Fireplace should be secured to side
framing members using the full length nailing
tabs at the top and bottom of the fireplace front
face. Use 8d nails or equivalent (
Figure 17
).
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) (
Figure 18
). Then plumb from ceiling or
roof level directly above hole which has just
been completed.
Figure 17
Note: The nailing tabs and the area directly
behind the nailing tabs are exempt from the
clearances described on page 5. Maintain at
least 1/2" clearance from the firebox wrapper to
the framing at the closest point of contact,
directly adjacent to the flange.
INSTALLING THE CHIMNEY SYSTEM
Step 1. Before continuing, check the operation
of the damper, as described on page 4, (
refer to
Figure 3
).
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 15 and 16
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.
Figure 18
Step 3. Position appropriate firestop spacer at
ceiling and nail temporarily with two (2) 8d
nails. Use flat firestop spacer, Model F10FS-2,
if chimney penetrates ceiling vertically. If chim-
ney penetrates ceiling at 30° angle (offset
chimney), use 30° firestop spacer, Model
F10FS30-2. Use one nail on opposite sides to
hold firestop spacer in position. Nail perma-
nently, 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 19 and 20 ).
Figure 19
Firestop Spacer
Room Above
Firestop Spacer
Attic Above
Figure 20
CHIMNEY 30° OFFSET THROUGH FLOOR
OR CEILING
It may be necessary to assemble the chimney at
30° when passing through the floor or ceiling
area. Use the F10FS30-2 firestop spacer as
shown in
Figures 21 and 22
. Support the
chimney at floor or ceiling penetration with a
FTF10 stabilizer if distance of chimney below
ceiling is 10' or more. Maintain 2" minimum air
space to combustibles from chimney sections.
Figure 21
Figure 22
F10FS30-2
Firestop Spacer
FTF10-S4
Stabilizer
2" Min.
Air Space
30° Firestop
And Attic Above
10'
Max.
Attic Space
2" Min.
Air Space
F10FS30-2
Firestop Spacer
FTF10-S4
Stabilizer
30° Firestop
And Room Above
10'
Max.
Room Above
2" Min.
Air Space
2" Min.
Air Space
8d Nail Or
Equivalent