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Deco Installation and Operation Manual
8 The Venting System
8.1 General
The venting system, made up of the chimney and the connecting pipe between the stove
and the chimney, acts as the engine that drives your wood heating system. Even the best
stove will not function safely and efficiently as intended if it is not connected to a suitable
chimney.
The heat in the flue gases that pass from the stove and chimney connector into the
chimney is not waste heat. This heat is what the chimney uses to make the draft that
draws in combustion air, keeps smoke inside the stove and safely vents exhaust to
outside. You can think of heat in the flue gas as the fuel the chimney uses to make draft.
8.2 Suitable Chimneys
Your wood stove will provide optimum efficiency and performance when connected to a 6-
inch diameter chimney flue system. The connection to a chimney having a diameter of at
least 5 inches (Canada only) or no more than 7 inches is permitted, if it allows the proper
venting of combustion gases and that such application is verified and authorized by a
qualified installer. Otherwise, the diameter of the flue should be 6 inches.
To be suitable, a factory-built metal chimney
must comply with UL 103 (U.S.A.) or ULC
S629 (Canada).
8.2.1 Factory-built Metal Chimneys
These are sometimes referred to as 'high
temp' chimneys because they have the
special
characteristics
to
withstand
the
temperatures that can be created by wood
burning stoves. Factory-built chimneys are
tested as a system with all the necessary
components for installation. The instructions
provided with the chimney by its manufacturer
are the only reliable source of installation
guidelines. To be safe and effective, the
chimney
must
be
installed
exactly
in
accordance
with
the
manufacturer's
instructions. Use only components intended
for the brand and model of chimney you
are using. Never substitute parts from
other chimney brands or fabricate your
own components. The chimney must be a
type suitable for solid fuel.
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