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INSTALLATION – Combustible Wall Chimney Connector Pass-Throughs
PAGE 14
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, o
r
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” (305 mm) Clearance to Combustible Wall Mem-
ber: Using a minimum thickness 3.5” (89 mm) brick and a 5/8” (16
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 mini-
mum of 12” (305 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” (229 mm) Clearance to Combustible Wall Member:
Using a 6” (153 mm) inside diameter, listed, factory-built Solid-Pak
chimney section with insulation of 1” (26 mm) or more, build a wall
pass-through with a minimum 9” (229 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” (229 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 chim-
ney 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” (153 mm) Clearance to Combustible Wall Mem-
ber: Starting with a minimum 24 gage (.024” [.61 mm]) 6” (153
mm) metal chimney connector, and a minimum 24 gage ventilated
wall thimble which has two air channels of 1” (26 mm) each, con-
struct a wall pass-through. There shall be a minimum 6” (153 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” (153 mm) space. There should
also be a support sized to fit and hold the metal chimney connec-
tor. See that the supports are fastened securely to wall surfaces
on all sides. Make sure fasteners used to secure the metal chim-
ney connector do not penetrate chimney flue liner.
Method D. 2” (51 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” (26 mm) or more,
and an inside diameter of 8” (2 inches [51 mm] larger than the 6”
[153 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” (26 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.
D
C
B
A
Min. 12 in. (304.8mm)
to Combustibles
Masonr
y
Chimney
Fire Clay
Liner
Chimney
Connector
Min. Clearance 12 in.
(304.8mm) of Brick
Min. Chimney Clearance to Brick &
Combustibles – 2 in. (51mm)
Chimney Flue
Factory Built
Chimney Length
Air Space – 9 in.
(228.6mm) Min.
Chimney Length
Flush with In-
side of Flue
Min. Clearance
9 in. (228.6mm)
Chimney
Connector
Use Chimney
Mfrs. Parts to
Attach Connec-
tor Securely
Soli
d
-Insulated
Listed Factory-
Built Chimney
Length
Sheet Steel Su
pp
orts
Chimney
Flue
Min. Chimney Clearance from Masonry to Sheet Steel
Supports & Combustibles – 2 in. (51mm)
Nonsoluble
Refractory
Cement
Min. Chimney Clearance from Masonry to Sheet Steel
Supports & Combustibles – 2 in. (51mm)
Chimney
Connector
2 Air Channels, Each 1
in. (25.4 mm)
Min. 6 in.
(152.4mm) glass
Fiber Insulation
2 Ventilated Air
Channels, Each
1 in. (25.4 mm)
Construction of
Sheet Steel
Sheet Steel Su
pp
orts
Masonr
y
Chimney
Chimney Flue
Min. Chimney Clearance from
Masonry to Sheet Steel Supports
& Combustibles – 2 in. (51mm)
Sheet Steel
Supports
Chimney
Connector
Chimney
Section
Air Space – 2 in.
(51mm) Min.
Masonr
y
Chimney
Sheet
Steel
Supports
Chimney
Connector
Chimney
Length
1 in. (25.4 mm)
Air Space to
Chimney
Length
Min. Clearance
2 in. (51 mm)
NOTES: