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VII. Venting (continued)
F. Terminal Installation
1. Use the terminal connections supplied by the
venting manufacturer. Follow manufacturer's
instructions to attach the terminal to the vent
system.
2. For CPVC terminals, apply a heavy bead of silicone
to the male end of the terminal before inserting it
into the last piece of pipe. Orient the terminal so
that the seam in the terminal is at 12:00. Smooth
the silicone over the seam between the terminal
and the last piece of pipe, applying additional
silicone if necessary to ensure a tight seal. Allow
the silicone to cure per the silicone manufacturer's
instructions before operating the appliance.
3. Install screens in the terminals. Use a screen having
1/2 in. x 1/2 in. (13 mm x 13 mm) mesh.
4. Guidelines for Horizontal sidewall terminations are
shown in Figure 8.
5. Guidelines for vertical roof terminations are shown
in Figure 9.
6. Adhere to the minimum and maximum wall
thickness specified by the manufacturer of the wall
penetration assembly.
WARNING
WARNING
!
Moisture and ice may form on the surface
around vent termination.
To prevent deterioration, surface must be in
good repair (sealed, painted, etc.).
Do not allow low spots in the vent where con-
densate may pool.
Use specified vent and combustion air pipe
diameters.
All vent and combustion air piping must be
sealed and airtight.
Alteration of the appliance vent connection is
prohibited.
The joint between the terminal and the last
piece of pipe must be outside of the building.
Use 90° elbow or tee for horizontal sidewall
vent termination when using room air for
combustion.
!
The vent for this appliance shall not terminate:
1. Over public walkways; or
2. Near soffit vents or crawl space vents or
other areas where condensate or vapor could
create a nuisance or hazard or cause property
damage; or
3. Where condensate vapor could cause damage
or could be detrimental to the operation of
regulators, relief valves, or other equipment.
COMBUSTION AIR TERMINAL
(COMBUSTION AIR VERTICAL
RUN MAY BE OMITTED)
24in. (610mm) MAX
TO WALL (TYP)
Figure 10: Snorkel Termination
30
NOTICE
NOTICE
WARNING
WARNING
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