Heat & Glo HST-48D Owner's Manual page 22

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 and
11-10 in. /279 -25 4 mm
adapter are not shown, but
are required in Canada.
NO
Garage or
combustible
liquids storage
Factory-built
fireplace
Use only duct materials specified by manufacturer (preferably
with short run or mainly straight duct, except small dip for cold
air trap which will help prevent flow of cold air).
Heat & Glo • HST-48D US-CAN • 4012-040 • Rev K • 3/12
NO
Attic space
NO
Outlet placed
higher than 3 ft
below the
termination cap