Instruction manual

20 Breckwell
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 Specifi cation 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 fl ue
liner but not past the inner surface. Firmly grout or cement the clay liner
in place to the chimney fl ue 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 fl ush with the inside of the masonry
chimney fl ue, 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 gauge (.024” [.61 mm]) 6” (152.4 mm) metal chimney
connector, and a minimum 24 gauge 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 fi berglass
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” (152.4 mm) space. There should also
be a support sized to fi t 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 fl ue 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 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.
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 fl ue liner face.
2. A chimney connector shall not pass through an attic or roof space, closet or similar concealed space, a fl oor, or ceiling.