Specifications
Heater model installaon and operaon manual
ere are two reasons why the chimney in the house at right will cold backdraft when it is cold outside and there is no re burn-
ing in the stove. First, the chimney runs up the outside of the house, so the air in it is colder and denser than the warm air in the
house. And second, the chimney is shorter than the heated space of the house, meaning the negative pressure low in the house will
pull outside air down the chimney, through the stove and into the room. Even the nest stove will not work well when connected
to this chimney.
Supply of Combustion Air
In Canada, wood stoves are not required to have a supply of combustion air from outdoors (except in mobile homes) because
research has shown that these supplies do not give protection against house depressurization and may fail to supply combustion
air during windy weather. However, to protect against the risk of smoke spillage due to house depressurization, a carbon monox-
ide (CO) detector/alarm is required in the room in which the stove is installed. e CO detector will provide warning if for any
reason the wood stove fails to function correctly.
Air Supply in Conventional Houses
e safest and most reliable supply of combustion air for your wood stove is from the room in which it is installed. Room air is
already preheated so it will not chill the re, and its availability is not aected by wind pressures on the house. Contrary to com-
monly expressed concerns, almost all tightly-sealed new houses have enough natural leakage to provide the small amount of air
needed by the stove. e 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.
Some jurisdictions in the United States require that wood stoves have a supply of combustion air from outdoors. If you do install
an air supply through the wall of the house, be aware that its pressure can be aected during windy weather. If you notice changes
in wood stove performance in windy weather, and in particular if smoke pus from the stove, you should disconnect the outdoor
air duct from the stove and remove the duct. 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.
Installing the Chimney Connector
e chimney connector is the single or double wall pipe installed between the stove ue collar and the chimney breech. Single
wall pipe components are available from most hardware and building supply stores. ese components are not usually tested to a
particular standard and certied as compliant. erefore, a list of rules found in solid fuel installation codes apply to the installa-
tion of single wall pipe.
Double wall chimney connectors are tested and certied. e rules for double wall pipe are found in the manufacturer’s installa-
tion instructions. ese rules will be very dierent than those for single wall.
Installation of Single Wall Chimney Connector
e chimney connector assembly has been called ‘the weak link’ in the safety of wood heating systems because failure to install the
connector properly (which has been common in the past) can result in house res.
e best ue pipe assembly is one that rises straight up from the stove to the base of the chimney with no elbows. Straight as-
semblies are less likely to cause problems like smoke roll-out when the door is opened for loading. ey are also more stable and
easier to maintain than assemblies with elbows. Horizontal runs of ue pipe should be avoided where possible because they reduce
chimney draft.
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