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appliances it serves. This involves correct sizing, adequate height, and
proper construction. See the “Chimney Pipe” section on pg. 7.
Since the chimney draft is affected by so many factors, draft problems
can be complicated to find.
Testing the Draft
To find where the air is being drawn, twist a paper towel into a wick, light it
and blow it out to create smoke. Placing the smoking wick near the open
hatches, windows or vents will lead you to the location. Installing or opening
opposing vents will allow the air to come in from a path of least resistance
and not disturb the draft in the chimney.
Downdraft
A common reason for downdraft is burning the heater too low (too much air
in the combustion chamber and not enough fuel). If the flames are weak then
it is burning inefficiently causing the draft to be too weak going up the
chimney allowing downdraft down the chimney. When the flames are
burning strong then the natural draft is at its strongest so it can fight against
downdraft.
5. Installing your Heater
Location
Plan your heaters location prior to installing to ensure the location chosen
will fit the specifications and safety clearances. Combustible material closer
to the heater then the specified safety clearances must be lined with
insulation or millboard and a metal liner with a .5” standoff for air
movement behind. Another alternative is using insulation or millboard and
ceramic tile. The back of the heater and the first length of chimney pipe
should also be lined with such material. See diagram below.
Safety Clearances
All sides- 8”
Mounting
The heater has the appropriate brackets attached to secure the heater to the
bulkhead. Locate the heater as close to the floor as possible for maximum
stack length and to provide good heat convection. The location must also
