The FTF13 chimney system is a two-piece chimney, 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 together by means of locking tabs (7 locking tabs per joint). Check each piece by pulling up slightly from the top to ensure proper engagement 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 22 ).

Figure 22

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 23 ).

Locking Tabs (Lances)

Figure 23

Note: Assemble one component of chimney at a time (inner section first, then outer section last) beforeproceedingwiththenextcompletesection.

Continue to assemble the chimney up through framed ceiling opening. Assemble just enough to penetrate the roof flashing openings (Figure 24 ). Always maintain 2" (51 mm) minimum air space to combustible materials and always check each pipe joint (inner and outer) to ensure proper engagement.

10

2" (51mm) Min. Air Space to Combustibles

Figure 24

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 reinforcement 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 exceed 30' (9.1 m). Chimney heights above 30' (9.1 m) must be supported by a Model FTF13- S4 stabilizer installed at 30' (9.1 m) intervals.

Note: The Model FTF13-S4 adds 3" (76 mm) net effective height to the total chimney system.

Install the Model FTF13-S4 stabilizer by fitting inner section down into respective section of proceeding flue pipe and locking outer stabilizer 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 25 ).

FTF13-S4 Stabilizer

Figure 25

Note: Do not apply excessive pressure to any subsequent chimney sections following the stabilizer when installing. Ensure each subsequent chimney section is securely attached by testing as noted in Step 4.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

B

 

 

A

Ceiling Framing

 

Figure 26

 

 

Framing Dimensions for Ceiling

 

 

 

 

Ceiling Opening

 

 

 

Flue Type

A

B

 

 

 

FTF13, Vertical

19"

19"

at 2" (51 mm)

(483 mm)

(483 mm)

FTF13, Offset

19"

29"

At 2" (51 mm)

(483 mm)

(737 mm)

 

 

 

D

C

Roof Framing

Figure 27

Framing Dimensions for Roof

 

FTF13 at 2" (51 mm)

 

 

 

Pitch

C

D*

 

 

 

0/12

19"

19"

 

(483 mm)

(483 mm)

 

 

 

6/12

19"

20"

 

(483 mm)

(508 mm)

 

 

 

12/12

19"

27"

 

(483 mm)

(686 mm)

 

 

 

* Perpendicular to Roof Ridge.