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Method A. 12” (304.8 mm) Clearance to Combustible Wall
Member: Using a minimum thickness 3.5” (89 mm) brick
and a 5/8” (15.9 mm) minimum wall thickness clay liner,
construct a wall pass-through. The clay liner must conform
to ASTM C315 (Standard Specification for Clay Fire Linings)
or its equivalent. Keep a minimum of 12” (304.8 mm) of brick
masonry between the clay liner and wall combustibles.
The clay liner shall run from the brick masonry outer surface
to the inner surface of the chimney flue liner but not past
the inner surface. Firmly grout or cement the clay liner in
place to the chimney flue liner.
Method B. 9” (228.6 mm) Clearance to Combustible Wall
Member: Using a 6” (152.4 mm) inside diameter, listed,
factory-built Solid-Pak chimney section with insulation of 1”
(25.4 mm) or more, build a wall pass-through with a minimum
9” (228.6 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” (228.6 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 masonry chimney flue, and sealed with a non-
water soluble refractory cement. Use this cement to also
seal to the brick masonry penetration.
Method C. 6” (152.4 mm) Clearance to Combustible Wall
Member: Starting with a minimum 24 gage (.024” [.61 mm])
6” (152.4 mm) metal chimney connector, and a minimum
24 gage ventilated wall thimble which has two air channels
of 1” (25.4 mm) each, construct a wall pass-through.
There shall be a minimum 6” (152.4) 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” (152.4 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” (50.8 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” (25.4
mm) or more, and an inside diameter of 8” (2 inches [51
mm] larger than the 6” [152.4 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” (25.4 mm) off the chimney
connector by way of sheet metal support plates at both
ends of chimney section. Cover opening 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 do not penetrate chimney flue liner.
NOTES:
1. 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.
COMBUSTIBLE WALL CHIMNEY CONNECTOR PASS-THROUGHS
Summary of Contents for VOGELZANG VG900
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