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Method B.
9” (229 mm) Clearance to Combustible Wall
Member: Using a 6” (153 mm) inside diameter, listed,
factory-built Solid-Pak chimney section with insulation
of 1” (26 mm) or more, build a wall pass-through with a
minimum 9” (229 mm) air space between the outer wall
of the chimney length and wall combustibles. Use sheet
metal supports fastened securely to wall surfaces on
all sides, to maintain the 9” (229 mm) air space. When
fastening supports to chimney length, do not penetrate
the chimney liner (the inside wall of the Solid-Pak
chimney). The inner end of the Solid-Pak chimney section
shall be flush with the inside of the code-approved
masonry chimney with a flue liner flue, and sealed with a
non-water soluble refractory cement. Use this cement to
also seal to the brick masonry penetration.
Method C.
6” (153 mm) Clearance to Combustible Wall
Member: Starting with a minimum 24 gauge (.024”
[.61 mm]) 6” (153 mm) metal chimney connector, and
a minimum 24 gauge 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-gauge 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 inches [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” (26
mm) 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 gauge 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
do not penetrate flue liner.
NOTES: Connectors to a code-approved masonry
chimney with a flue liner, 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
