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23
Important Installer Notice – Weather Sealing & Vapor Barriers
It is the installer’s responsibility to ensure that vent installations through exterior walls
are caulked and weatherproofed in such a manner as to:
• Prevent rain water from entering the wall from the weather side by adequately
caulking the outer vent plate to the exterior wall surface.
• Prevent moisture inside the home from penetrating into the wall structure by ensuring
the inside wall plate is adequately sealed to the inside vapor barrier.
• Prevent rain water and moisture from entering the walls by sealing the joints between
the outer vent tube and the inner and outer wall plates.
We recommend the use of a high quality polyurethane sealant.
Co-Axial Venting
Rear Vent with No Vertical Rise
The horizontal vent run cannot be extended by the use of any vent accessory pipes.
23-1/8”
(58.7 cm)
26” (66 cm) max.
vent length
(14” (36 cm) max.
enclosed within
combustible wall
cavity)
Use 845 TG vent
guard with
accessible
terminations
located at less
than 7’ (2.13 m)
above ground
Rear vent—no vertical rise
Corner rear vent—no vertical rise
Approved
through wall
shield/thimble
Approved
side wall
termination
Vent pipe max.
15” (38 cm)
after 45° elbow
QUALIFIED
INSTALLER
