Version
1.02
Page
14 Printed:
November
7,
2012
OM-BRII/90.PUB
Installation—Chimney General
CHIMNEY DRAFT
Draft is the force which moves air from the appliance up the chimney and pulls fresh, oxygen-rich air into
the combustion chamber. Your stove can not force smoke up the chimney but rather your chimney must
always "suck" the smoke out of your stove. The smoke will always try to go to the area of lowest pressure
The amount of draft in your chimney depends on the length of the chimney, local geography, nearby
obstructions, and other factors. Too much draft can cause excessive temperatures in the appliance and
may damage the unit.
Inadequate drafting may cause back puffing into the room and plugging of the chimney. Inadequate draft
may also cause the appliance to leak smoke into the room through the appliance and chimney connector
joints.
An uncontrollable burn or glowing red stove part or chimney connector indicates excessive draft. If you
experience poor burn times or if you stove fails to get hot it may be due to inadequate draft. In most
instances if the stove is vented into an exterior masonry chimney, and the draft is inadequate, you will need
to line the outside chimney with a stainless steel liner.
Excessive draft can create over firing, short burn times and damage to internal components.
CHIMNEYS
In Canada:
Any 6” ULC-S629 listed chimney system installed according to the manufacturers instructions.
In U.S.A.:
Any 6” UL-103HT listed chimney system installed according to the manufacturers instructions.
Masonry Chimney:
Masonry Chimney’s must be constructed to local codes. Inspection and approval by
local code authorities is required. Listed stainless steel chimney liners and connectors are highly
recommended in masonry chimney installations. Listed solid fuel chimney liners are required for masonry
installations in Canada.
Mobile home units require certain listed components and chimney manufacturers. See Mobile Home
Instructions (page 16) for details.
Refer to the chimney and chimney connector manufacturer’s instructions for additional information. If this
stove and its chimney components are not properly installed, a house fire may result. For your safety,
follow the installation directions. Contact local building or fire officials about restrictions and installation
requirements in your area.
Your chimney should be at least the same dimension (inside diameter) as the flue of your stove. If you
plan to use an existing masonry chimney, be sure it is free of cracks and loose joints. Gases traveling
through a chimney can reach extremely high temperatures. Cracks or loose mortar can allow hot gases to
reach the wood portion of the structure surrounding the chimney. These toxic gases may also re-enter the
house through cracks and small holes in the chimney. An inadequate chimney can also cause back-puffing
which will result in excessive smoking. Be on the safe side and have your chimney inspected by a certified
chimney sweep. A 6 inch stainless steel chimney liner with a direct connection to the stove is
recommended for Masonry chimney installations. Outside
masonry chimney’s almost always require a listed liner system to
ensure proper draft.
A chimney must reach at least three feet above the highest point
where it passes through the roof and at least two feet higher than
any portion of the building within ten feet of the chimney. Smoke
travels up the chimney in a circular, spiraling motion. A 6 inch
round stainless steel liner allows the smoke to travel with less
resistance. A rough masonry chimney without a good smooth liner
will allow creosote to build up quickly.
Check all local codes and regulations regarding your
installation before you begin.
