Minimum Flue Height - Osburn INSPIRE 2000 Installation And Operation Manual

9.2.2 Masonry Flue System
The wood fire may also be connected to a masonry
flue system, provided the flue system complies with
AS/NZS 2918 or with the construction rules found in
the building code enforced locally. The flue system
must have either a clay liner or a suitably listed
stainless steel liner. If the masonry flue system has
a square or rectangular liner that is larger in cross
sectional area than a round 150 mm (6») flue, it
should be relined with a suitably listed 150 mm (6»)
stainless steel liner. Do not downsize the flue to less
than 150 mm (6») unless the flue system is straight
and exceeds 8 m (25 feet) in height. When passing
through a combustible wall, the use of an insulated
listed thimble is required.

9.3 Minimum Flue Height

Installation and Operation Manual - Inspire 2000 Page 35