Lennox Hearth 1900HT-M operation manual Method a inch 305mm Clearance to Combustible Wall Mem

INSTALLATION Combustible Wall Chimney Connector Pass-Throughs

A	Method A. 12 inch (305mm) Clearance to Combustible Wall Mem-
	ber: Using a minimum thickness 3.5 inch (90 mm) brick and a 5/8
	inch (16 mm) minimum wall thickness clay liner, construct a wall
	pass-through. The clay liner must conform to ASTM C315 (Stan-
	dard Specification for Clay Fire Linings) or its equivalent. Keep a
	minimum of 12 inches 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 inch (229mm) Clearance to Combustible Wall Mem-
	ber: Using a 6 inch inside diameter, listed, factory-built Solid-Pak
B
	chimney section with insulation of 1 inch (25.4 mm) or more, build
	a wall pass-through with a minimum 9 inch 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-inch air space. When fastening supports to chim-
	ney 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 inch (152mm) Clearance to Combustible Wall Mem-
C	ber: Starting with a minimum 24 gage (.024 inch [.61 mm]) 6-inch
	metal chimney connector, and a minimum 24 gage ventilated wall
	thimble which has two air channels of 1 inch each, construct a wall
	pass-through. There shall be a minimum 6 inch separation area
	containing fiber glass 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-inch space. There should also be a support sized to fit and
	hold the metal chimney connector. See that the supports are fas-
	tened 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 inch (51mm) Clearance to Combustible Wall Mem-
D	ber: Start with a solid-pak listed factory built chimney section at
	least 12 inches (305mm) long, with insulation of 1 inch (25.4mm)
	or more, and an inside diameter of 8 inches (2 inches [51 mm]
	larger than the 6 inch chimney connector). Use this as a pass-
	through for a minimum 24-gage single wall steel chimney connec-
	tor. Keep solid-pak section concentric with and spaced 1 inch 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 sur-
	faces on all sides. Make sure fasteners used to secure chimney
	section 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.

2.A chimney connector shall not pass through an attic or roof space, closet or similar concealed space, or a floor, or ceiling.

3.Where passage through a wall, or partition of combustible construction is desired, the installation shall conform to CAN/CSA-B365.

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