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© 2023 United States Stove Company
INSTALLATION
the smoke exhaust system can be much longer
and connected without problem to the chimney
at the ceiling of the room. There should never be
more than two 90 degrees elbows in the smoke
exhaust system. The installation of a “barometric
draft stabilizer” (replace register) on a smoke
exhaust system is prohibited. Furthermore, the
installation of a draft damper is not recommended.
With a controlled combustion wood stove, the draft
is regulated upon intake of the combustion air in
the stove and not at the exhaust.
IMPORTANCE OF PROPER DRAFT
Draft is a force that moves air from the appliance
up through the chimney. The amount of draft
in your chimney depends on the length of the
chimney, local geography, nearby obstructions and
other factors. Too much draft may cause excessive
temperatures in the appliance. An inadequate
draft may cause back-pufng into the room and
“plugging” of the chimney. An inadequate draft will
cause the appliance to leak smoke into the room
through appliance and chimney connector joints.
An uncontrollable burn or excessive temperature
indicates an excessive draft.
CHIMNEY
Your wood stove may be hooked up with a 6”
factory-built or masonry chimney. If you are using
a factory-built chimney, it must comply with UL 103
or CAN/ULC S629 standard; therefore it must be
a Type HT (2100°F). It must be installed according
to the manufacturer’s specications. Take into
account the chimney’s location to ensure it is not
too close to neighbors or in a valley which may
cause unhealthy or nuisance conditions. If you
are using a masonry chimney, it must be built in
compliance with the specications of the National
Building Code. It must be lined with re clay bricks,
metal or clay tiles sealed together with re cement.
Round ues are the most efcient. The interior
diameter of the chimney ue must be identical to
the stove smoke exhaust. A ue which is too small
may cause draft problems, while a large ue favors
rapid cooling of the gas, and hence the build-
up of creosote and the risk of chimney res. Note
that it is the chimney and not the stove which
creates the draft effect; your stove’s performance is
directly dependent on an adequate draft from your
chimney. Do not connect this unit to a chimney
The following
recommendations may be useful for the installation
of your chimney:
1. It must rise above the roof at least 3’ (0.9m) from
the uppermost point of contact.
2. The chimney must exceed any part of the
building or other obstruction within a 10’
(3.04m) distance by a height of 2’ (0.6m).
3. The installation of an interior chimney is always
preferable to an exterior chimney. Indeed, the
interior chimney will, by denition, be hotter
than an exterior chimney, being heated up by
the ambient air in the house. Therefore the
gas which circulates will cool more slowly, thus
reducing the build-up of creosote and the risk
of chimney res.
4. The draft caused by the tendency for hot air to
rise will be increased with an interior chimney.
5. Using a re screen at the extremity of the
chimney requires regular inspection to ensure
that it is not obstructed thus blocking the draft,
and it should be cleaned when used regularly.
FACTORY BUILT CHIMNEY
When a metal prefabricated chimney is used, the
manufacturer’s installation instructions must be
followed. You must also purchase (from the same
manufacturer) and install the ceiling support
package or wall pass-through and “T” section
package, restops (where needed), insulation
shield, roof ashing, chimney cap, etc. Maintain
proper clearance to the structure as recommended
by the manufacturer. The chimney must be the
required height above the roof or other obstructions
for safety and proper draft operation.
