Lennox Hearth CR-3835R Roof Pitch, Flat to 6/12, 12 to 12/12, Using a CTD Round Termination

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	FTF10
Flat to 6/12	F8-F6	F10-F6
6/12 to 12/12	F8-F12	F10-F12

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. Again, check the vertical position of the chimney and the 2" (51 mm) minimum air space to combustibles (See **Note).

Next, slide roof flashing over extended chimney section that previously has been installed above the roof opening in Step 4. FTF8 flashings require flashing spacers. Slide flashing all the way down until the flashing base rests flat on the roof (Figure 27 ). Again, check the vertical position of the chimney and the 2" minimum air space to combustibles.

FTF8 Chimney

Do Not Seal

Flashing Spacers

FTF8 Flashing

Figure 28

Step 8. The standard Security Chimneys roof flashing assemblies include a storm collar. Slide storm collar over outer chimney, align with top surface of flashing, insert tab in slot, pull tight and bend tab back over slot. Seal storm collar to outer chimney with waterprood roof caulking around entire circumference of pipe. Also add extra roof caulking where storm collar meets flashing and to the tab/slot area to seal com- pletely against water penetration (Figure 29 ). Check all joints very carefully to ensure no water intrusion can take place.

Locking Band

Waterproof

Caulk

Figure 29

Note: If chimney extends more than 8' above roof surface, guy wires are also recommended. Use three (3) guy wires, attach to locking band assembly, extend and secure to roof in a trian- gular pattern (Figure 30 ). Guy wires are not supplied by the manufacturer.

Roof Ridge

120°

Figure 30

Step 10. Using a CTD Round Termination:

1.Hold the CTD over top of last chimney section (Figure 31 ).

2.Center inner slip section in inner flue pipe- slip down.

3.Center outer locking section over outer flue pipe. Push down until locking tabs are firmly engaged.

4.Pull up slightly on CTD to ensure locking joint has firmly engaged.

CTD

Figure 27

Note: Do not caulk or seal the ventilating openings.

Step 9. Security Chimneys locking bands, Model FLB, may be required if the chimney extends too high above the roof flashing. As a general rule, if the chimney extends more than 6' above the roof flashing, the use of locking bands is advisable to strengthen the chimney assembly. Align the locking band at the chim-

Termination

Figure 31

Chimney

10

Step 7. Secure flashing by nailing along the perimeter into roof using 8d nails. If shingled roof, slide upper end and sides of roof flashing under shingles (trim if necessary), seal the top and both sides of the flashing to the roof with roof caulking. Cover nail heads with roof caulk- ing (Figure 28 ).

ney joint. Locking bands wrap around pipe joints equally covering the joints of both pipe sections. Use the nut provided and TIGHTEN snugly. Do not overtighten as this might dam- age the chimney section (refer to Figure 29 ).

**Note: 1" (25 mm) when installed with FTF10 in the U.S. only.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

Using a FTF8/10-CTDT Chase Termination:

Refer to specific installation instructions in- cluded with the FTF8/10-CTDT chase termina- tion for clearance and installation details.