© 2020 United States Stove Company
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METHOD C -
6” (153 mm) Clearance to Combustible
Wall Member: Starting with a minimum 24
gage (.024” [.61 mm]) 6” (153 mm) metal chimney
connector, and a minimum 24 gage ventilated wall
thimble which has two air channels of 1” (26 mm)
each, construct a wall pass-through. There shall be
a minimum 6” (153 mm) separation area containing
fiberglass insulation, from the outer surface of the
wall thimble to wall combustibles. Support the
wall thimble, and cover its opening with a 24-gage
minimum sheet metal support. Maintain the 6” (153
mm) space. There should also be a support sized to
fit and hold the metal chimney connector. See that
the supports are fastened securely to wall surfaces
on all sides. Make sure fasteners used to secure
the metal chimney connector do not penetrate
chimney flue liner.
METHOD D -
2” (51 mm) Clearance to Combustible
Wall Member: Start with a solid-pak listed factory
built chimney section at least 12” (304 mm) long,
with insulation of 1” (26 mm) or more, and an inside
diameter of 8” (2” [51 mm] larger than the 6” [153 mm]
chimney connector). Use this as a pass-through for
a minimum 24-gauge single wall steel chimney
connector. Keep solid-pak section concentric with
and spaced 1” (26mm) off the chimney connector
by way of sheet metal support plates at both
ends of chimney section. Cover opening with and
support chimney section on both sides with 24
gage minimum sheet metal supports. See that
the supports are fastened securely to wall surfaces
on all sides. Make sure fasteners used to secure
chimney flue line do not penetrate the inner liner.
NOTES:
• Connectors to a masonry chimney, excepting
method B, shall extend in one continuous section
through the wall pass-through system and the
chimney wall, to but not past the inner flue liner
face.
• A chimney connector shall not pass through an
attic or roof space, closet or similar concealed
space, or a floor, or ceiling.
INSTALLATION
