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Contrary to commonly expressed concerns, almost all tightly-sealed new houses have enough
natural leakage to provide the small amount of air needed by the stove. The only case in which
the wood stove may not have adequate access to combustion air is if the operation of a powerful
exhaust device (such as a kitchen range exhaust) causes the pressure in the house to become
negative relative to outdoors.
Figure 35: Air supply in conventional houses
If an air intake is installed through the wall of the house, its pressure can vary during windy
weather. If there are changes in wood stove performance in windy weather, and in particular if
smoke puffs from the stove, the air duct should be disconnected from the stove to determine
if it is the cause of the problem. In some windy conditions, negative pressure at the duct
weatherhood outside the house wall may draw hot exhaust gases from the stove backwards
through the duct to outdoors. Check the outdoor air duct for soot deposits when the full system
is cleaned and inspected at least once each year.
8.6 Installing the Chimney Connector
The chimney connector is the single or double wall pipe installed between the stove flue collar
and the chimney breech. Single wall pipe components are available from most hardware and
building supply stores. These components are not usually tested to a particular standard and
certified as compliant. Therefore, a list of rules found in solid fuel installation codes apply to the
installation of single wall pipe.
Double wall chimney connectors are tested and certified. The rules for double wall pipe are
found in the manufacturer's installation instructions. These rules will be very different than those
for single wall.
Page 44
Installation and Operation Manual - Solution 2.3
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