HWAM Monet - Page 13

Page 13
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 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 gage minimum sheet metal supports. See that
the supports are fastened securely to wall surfaces on all sides. Make sure fasteners
used to secure chimney flue liner do not penetrate the liner.
Minimum chimney clearance to
sheet steel suppor ts and combustibles
2 in. (50.8 mm)
Two air channels
each 1 in. (25.4 mm)
Chimney connector
Minimum 6 in. (152.4 mm)
glass fiber insulation
Sheet steel suppo rt s
Masony chimney
Chimney flue
Two ventilated air channels
each 1 in. (25.4 mm).
Construction of sheet steel.
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 in. (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.
Sheet steel
suppor ts
Chimney
connector
Chimney
section
Air space 2 in.
(50.8 mm)
Minimum chimney clearance to
sheet steel supports and combustibles
2 in. (50.8 mm)
Minimum clearance
2 in. (50.8 mm)
1 in. (25.4 mm) air
space to chimne y length
Chimney connector
Sheet steel support s
Chimney length
Masony chimney