Lennox Hearth Products EARTHSTOVE 1400HT Page 12 Installation And Operation Manual Download

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INSTALLATION - Combustible Wall Chimney Connector Pass-Throughs

PAGE 12

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.

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 (Stan-

dard 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 Mem-

ber:

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 combusti-

bles. Use sheet metal supports fastened securely to wall surfaces

on all sides, to maintain the 9” (228.6 mm) air space. When fas-

tening 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 refrac-

tory 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 Mem-
ber:

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 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 chim-
ney section on both sides with 24 gage minimum sheet metal sup-
ports. See that the supports are fastened securely to wall surfaces
on all sides. Make sure fasteners used to secure chimney section
do not penetrate chimney flue liner.