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Method C: 6” (152.4 mm) Clearance to Combustible Wall Member:
Starting with a minimum 24 gage (.024” [.61 mm]) 8” (203.2 mm) met-
alchimney 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 con-
taining 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 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 8” [203.2mm] 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 sur-
faces on all sides. Make sure fasteners used to secure chimney flue liner.
Summary of Contents for M 700 INSERT
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