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Safety Instructions Installation Instructions Operating Instructions Care and Cleaning Troubleshooting Tips Customer Service
Additional Considerations
Do Not install vent terminal under any patio or deck.
To help prevent moisture from freezing on walls and under
eaves, do not locate vent terminal on the side of a building
with prevailing winter winds.
Do Not terminate vent pipe directly on brick or masonry
surfaces. Use a rust-resistant sheet metal backing plate
(2 x 2 feet) behind vent. (See illustration.)
Do Not locate vent terminal too close to shrubbery, as flue
gases may damage them.
Caulk all cracks, seams and joints within six (6) feet of vent
terminal.
All painted surfaces should be primed to lessen the
chance of physical damage. Painted surfaces will require
maintenance.
Insulate vent pipe exposed to cold conditions (attics, crawl
spaces, etc.) to help prevent moisture from accumulating in
vent pipe.
Vertical Vent Terminal Location
The location of the vertical vent terminal depends on the following
considerations (see illustration):
Minimum twelve (12) inches above roof.
Minimum twelve (12) inches above anticipated snow level.
Maximum twenty-four (24) inches above roof level without
additional support for vent pipe.
Four (4) feet from any gable, dormer or other roof structure
with building interior access (i.e., vent, window, etc.).
Ten (10) feet from any forced air inlet to the building.
Any fresh or make-up air inlet such as a dryer or
furnace area is considered to be a forced air inlet.
Horizontal Vent Terminal Location
The location of the vent terminal depends on the following
minimum clearances and considerations (see illustration):
Twelve (12) inches above grade level and above normal
snow levels.
Four (4) feet below, or four (4) feet horizontally from any
door, window or gravity air inlet to the building or other
appliances, or from gas or electric meters. Do not locate
vent abov
e walkways, doors, windows, air inlets, gas or
electric meters.
Three (3) feet from any forced air inlet to the building.
Any fresh or make-up air inlet such as for a dryer or
furnace area is considered to be a forced air inlet.
Three (3) feet from an inside corner formed by two exterior
walls.
Four (4) feet horizontally from any soffit or under-eave vent.
WARNING: Moisture in the flue gas will condense as it leaves
the vent terminal. In cold weather this condensate can freeze on
the exterior wall, under the eaves and on surrounding objects.
Some discoloration to the exterior of the building is to be
expected. However, improper location or installation can result in
severe damage to the structure or exterior finish of the building.
13
Inside
corner
Fresh
air
intake
Electric
meter
Soffit vents
Window or vent
3′ above if within 10′
4′
4′
4′
4′
3′
12″
4′
4′
Caulk
Rising moisture will
collect under eaves
Caulk
If soffit vent is too
close, block off and
install new vent at
another location
6′ caulk
zone or
to edge
of window etc., starting
within 6′
RTV silicone
caulk
Caulk
Inside
corner
6′
caulk
zone
2 ft. sq. sheet
metal plate on
brick or masonry
surface
6′
4′
Insert 1/2″ mesh
protective screen inside
terminal elbow
Short piece of 3″
vent pipe
3″ Vent Pipe
Through Roof
Min. 12″
above roof
Min. 12″
above anticipated
snow level
Max. 24″
above roof
(Without additional
support)
3″ Elbows
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