Draft - Drolet HT-1600 Owner's Manual

DRAFT

Your E.P.A Drolet stove's performance will be optimised if it is installed with a chimney (flue)
system that provides an adequate draft. The draft is the force that moves air from the
appliance up through the chimney and is predominantly affected by the height and diameter
of the chimney, as well as the stack temperatures of the stove. If you test the draft using a
pressure gauge, the reading should be between .05 - .07 inches of water column (w.c.) at a
medium-high fire. A draft measure of less than .03" w.c. will cause operational difficulties
while too much draft (greater than .10" w.c.) will result in over-firing of the stove. This can
result in excessive operating temperatures. In this case, the installation of elbows totaling no
more than 180° (ex.: 2 x 30° elbows, 2 x 45° elbows or 2 x 90° elbows) can be installed to
help reduce excessive draft. If the addition of elbows is not sufficient, a manual damper can
be installed in the vertical flue pipe.
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