Lennox Hearth Products Montage 32FS Installation And Operation Manual page 16

Standard Vertical Installation Configurations
Model: Mont a ge™ 3FS
This free-standing model may be connected to an existing flue or by
installing listed type "PL" vent pipe. If a liner is run all the way to the
top of the existing chimney, the existing flue should be sealed with a
steel plate. Start a vertical run with a Tee at the back of the stove. Other
options are illustrated below.
Figure 18 - Exterior Vertical Vent
Optional Complete
Liner and Listed
Termination Cap
Figure 19 - Vertical Vent Into a Masonry Flue
16
Listed Rain Cap
Wall Straps
Required Every
4 Feet Minimum
Listed Rain Cap
Optional
Clean-Out
Access Door
3" Min.
Preferred Installation – Vertical Vent Through the Roof
This venting configuration allows for the best stove performance. The
vertical pipe promotes natural draft and with the chimney inside the
dwelling, the flue gases stay warm, thus rising at a consistent rate.
Note: See Pages 10 and 11 for Vent Termination Requirements
Figure 20 -
Vertical Vent Through the Roof
Existing
Chimney Pipe
Pipe Increaser
Figure 21 -
Interior Vertical Vent into an Existing Class A Chimney
Listed Rain Cap
Flashing
3"
Min.
Clean-Out
Tee
Listed Rain Cap
Extend Pipe to the Top
if Existing Chimney is
Corroded or Damaged
3"
Min.