TOA Electronics CST-38 - Manual (Page 11)

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 11
Check vertical alignment of chimney pipe so
that it projects from the roof in a true vertical
position. Security's chimney sections do not
need to be screwed together. Additional rein-
forcement is not necessary, except in certain
offset conditions (see to page 16,
Figure 47 ).
Step 5. The height of vertical chimney pipe
supported only by the fireplace must not ex-
ceed 30' (9.1 m). Chimney heights above 30'
(9.1 m) must be supported by a Model FTF8-
S4 stabilizer installed at 30' (9.1 m) intervals.
Note: The Model FTF8-S4 adds 3" (76 mm) net
effective height to the total chimney system.
Install the Model FTF8-S4 stabilizer by fitting
inner section down into respective section of
proceeding flue pipe and locking outer stabi-
lizer section into place over the outer chimney
pipe. Position for proper clearance through
framed opening and nail straps securely (un-
der tension in “shear”) into place on framing.
Use 8d nails. Attach successive lengths of
chimney pipe directly to stabilizer using same
techniques as described in Step 4 (
Figure 35 ).
Figure 35
Note: Do not apply excessive pressure to any
subsequent chimney sections following the
stabilizer when installing. Ensure each subse-
quent chimney section is securely attached by
testing as noted in Step 4.
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 29 and 30).
Figure 29
Figure 30
For Canada Only
When installing the chimney system through
an open attic space, the attic shield assembly-
firestop spacer must be used (
Figure 31 ). This
installation is Warnock Hersey Inc. listed only
for use in Canada.
Figure 31
Step 4. Note: Chimney sections are constructed
with a unique locking tab design which en-
sures an immediate, tight assembly between
sections. Plan your chimney requirements
carefully before assembly as chimney is diffi-
cult to disassemble after installation. If disas-
sembled, the tabs might become damaged. Be
certain tabs are properly formed to ensure
tabs engage properly.
The FTF8 chimney system is a two-piece chim-
ney, which snaps together from the fireplace
up. Start with the inner flue section. With the
lanced end up, snap-lock it into the matching
collar on top of the fireplace. At all subsequent
joints, the upper flue section fits into the
preceding flue section. Each piece snaps to-
gether by means of locking tabs (7 locking
tabs per joint). Check each piece by pulling up
slightly from the top to ensure proper engage-
ment before installing succeeding sections, If
the flue has been installed correctly, it will not
separate when you test it. Also, the inner flue
joint where each section is joined should be
tight and flat without gaps (
Figure 32 ).
Figure 32
Outer pipe section installs in just the opposite
way; the lanced end goes down and each new
section goes OVER the outside of the previous
section installed (
Figure 33 ).
Firestop Spacer
Room Above
Firestop Spacer
Attic Above
Open Attic Space
Locking Tabs
(Lances)
Figure 33
Note: Assemble one component of chimney at a
time (inner section first, then outer section last)
before proceeding with the next complete section.
Continue to assemble the chimney up through
framed ceiling opening. Assemble just enough
to penetrate the roof flashing openings (
Figure
34 ). Always maintain 2" (51 mm) minimum air
space to combustible materials and always
check each pipe joint (inner and outer) to
ensure proper engagement.
FTF8-S4 Stabilizer
2" (51mm) Min. Air Space
to Combustibles
Figure 34