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installation
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14
COMBUSTIBLE WALL CHIMNEY
CONNECTOR PASS-THROUGHS
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-gage single
wall steel chimney connector. Keep solid-pak section concentric 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 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 the
metal chimney connector do not penetrate chimney flue liner.
14 |
Hampton® H200 Cast Freestanding Woodstove
Minimum chimney clearance to brick
and combustibles 2 in. (50.8mm)
Minimum
Masonry chimney
12 in. (304.8mm)
to combustibles
Minimum clearance
12 in. (304.8mm)
of brick
Chimney
connector
Fire clay
liner
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