3 ft min. from
top of uppermost
chimney section
to air inlet.
Figure 7.3
Possible Outside Air Inlet Locations
NO
Outlet blocked by
snow, leaves, etc.
YES
Clear area
outside
house or in
ventilated
crawl space
Figure 7.4
Outside Combustion Air Placement
22
Note: Chimney air kit
not shown, but required
in Canada.
NO
Garage or
NO
combustible
liquids storage
Attic space
Factory-built
fireplace
Heatilator • A36R & A42R • 28376 • Rev AF • 11/08
NO
Outlet placed
higher than 3 ft
below the
termination cap