Osburn Stoves by SB I 2200 - Manual (Page 10)

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Follow CSA Standard B365-M91 for methods and precautions to be employed when connecting
the stove to a masonry chimney, and for installing thimbles (wall penetration assemblies) when the
connection from the stove to the masonry chimney is made through a combustible wall.
When connecting to a factory built chimney, ensure that it is installed according to the
manufacturer's listed instructions. If using an existing chimney, inspect and clean the chimney if
required (this should be done by a licensed chimney sweep or a qualified professional).
Figure 1.3 – Chimney height
1.5.3.3 Exterior Chimney
Chimneys constructed outside of the home on an exterior wall should be avoided if possible,
especially in colder climates. Exterior chimneys may not draft well and in fact may down draft
(reverse flow) due to the difficulty in heating them up to operating temperature while trying to
evacuate the stack gases. All else being equal, cooler chimneys will have less draft than hotter
ones; this may lead to creosoting and poor performance. If an exterior chimney is used to remove
the stack gases the best results will be obtained by using a connector vertically off the unit to the
highest possible point before elbowing off horizontally to the chimney. For efficiency and safety
reasons the stove
must not be installed with an insulated chimney connected directly to the
appliance.