Operating instructions

5
Your Sierra dealer is ALWAYS your best source of
information on local codes and requirements
Your local building code agency or fire safety inspector
can refer you to a qualified professional who can inspect
the chimney for you.
CHIMNEY CONNECTOR SYSTEMS AND CLEARANCES
FROM COMBUSTIBLE WALLS FOR RESIDENTIAL
HEATING APPLIANCES
A. Minimum 3.5 inch thick brick masonry all framed into
combustible wall with a minimum of 12 inch brick
separation from clay liner to combustibles. The fireclay
liner shall run from the outer surface of brick wall to, but
not beyond, the inner surface of chimney flue liner and
shall be firmly cemented in place.
B. Solid-insulated, listed factory-build chimney length of the
same inside diameter as the chimney connector and
having 1 inch or more of insulation with a minimum 9
inch air space between the outer wall of the chimney
length and combustibles.
C. Sheet steel chimney connector, minimum 24 gauge
thickness, with a ventilated thimble, minimum 24 gauge
in thickness, having two 1 inch air channels, separated
from combustibles by a minimum of 6 inch of glass fiber
insulation. Opening shall be covered, and thimble
supported with a sheet steel support, minimum 24
gauge in thickness.