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Installation
When connecting the oven through
a combustible wall to a masonry
chimney, special methods are
needed. Refer to Figure 7. The
chimney must have either a clay
liner or a suitably listed stainless
steel liner. If the masonry chimney
has a square or rectangular liner
that is larger in cross sectional area
than a round 6" (152 mm) flue, it
should be relined with a suitably
listed 6" (152 mm) stainless steel
liner. Do not downsize the flue
to less than 6" (152 mm) unless
the venting system is straight and
exceeds 25' (7.6 m) in height. When
passing through a combustible
wall, the use of an insulated listed
thimble is required.
There are listed kits available to
connect an oven to a masonry
fireplace. The kit is an adapter
that is installed at the location of
the fireplace damper. The existing
damper may have to be removed to
allow installation.
Chimney Height
A masonry chimney or a listed
factory-build chimney must be the
required height above the roof and
any other nearby obstructions. The
chimney must be at least 3' (914
mm) higher than the highest point
where it passes through the roof
and at least 2' (610 mm) higher
than the highest part of the roof or
structure that is within 10' (3050
mm) of the chimney, measured
horizontally. Refer to Figure 8.
Figure 8
Chimney height requirements
2' Min.
3' Min.
10'
2-10-3 RULE
Ridge
13
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