Superior BCD36MH, BC36MH Roof Pitch, F8-F6, F8-F12, FTF8 Chimney FTF8 Flashing

WARNING

Donotallowinsulatingmaterialsto be blown into the space inside the thimble and the chimney. To do so could result in a fire hazard.

Outer Pipe Of	Thimble Cathedral
Chimney
	Ceiling
14" Min.
	Use Adjustable Thimble
	FM8-AT1 For All Ceiling
	Piches, From Flat To
	3/12 Pitch.
Figure 18

Step 4. Note: Chimney sections are con- structed with a unique locking tab design, which ensures an immediate, tight assembly between sections. Plan your chimney requirements carefully before assembly as chimney is difficult to disassemble after installation. If disassembled, the tabs might become damaged. Be certain tabs are properly formed to ensure locking tabs engage properly.

The Security Chimneys FTF8 chimney system is a two piece chimney, which snap together from the fireplace up. Start with the inner flue section with the lanced end up, snap lock it in to 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 (9 locking tabs per joint). Check each piece by pulling up slightly from the top to ensure proper engagement before installing the next section. 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 19).

Figure 19

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 20).

Locking Tabs (Lances)

Figure 20

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 opening. Assemble just enough to penetrate the roof flashing openings (Figure 21). Maintain 1" minimum air space to insula- tion and building materials and always check each chimney joint (inner and outer) to ensure proper engagement. Check vertical alignment of chimney so that it projects from the roof in true vertical position.

Figure 21

Security's chimney sections do not need to be screwed together. Additional reinforcement is not necessary except in certain offset conditions (refer to Page 13, Figure 35).

Step 5. The height of vertical chimney pipe sup- ported only by the fireplace must not exceed 30'. Chimney heights above 30' must be supported by a Model FTF8-S4 stabilizer installed at 30' intervals.

Note: The Model FTF8-S4 adds 3" net effective height to the total chimney system.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Install the Model FTF8-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 (under 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 22).

FTF8-S4 Stabilizer

Figure 22

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.

Step 6. Select the proper Security Chimneys roof flashing based on pitch of roof. Use chart below for selection:

Roof Pitch	FTF8
Flat to 6/12	F8-F6
6/12 to 12/12	F8-F12

Table 2

Next, slide roof flashing over extended chimney section that previously has been installed above the roof opening in Step 4. Slide flashing all the way down until the flashing base rests flat on the roof (Figure 23). Again, check the vertical position of the chimney and the minimum air space to combustibles.

FTF8 Chimney

FTF8 Flashing

Figure 23

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