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Vermont Castings Seville
30001490
• Placing a chimney connector pipe inside a section
of 9" (229mm) diameter, solid-insulated, factory-built
chimney, with two inches of air space between the
chimney section and combustibles. (Fig. 10)
Canadian Requirements:In Canada, the Canadian
Standards Association has established specific
guidelines regarding wall pass-though design. Figure
11 shows one approved method in which all
combustible material in the wall is cut away to provide
the required 18" (457mm) clearance around the
connector. The resulting space must remain empty. A
flush-mounted sheet metal cover may be used
on one
side only. If covers must be used on both sides, each
cover must be mounted on noncombustible spacers at
least 1" (25mm) clear of the wall. Your local dealer or
your local building inspector can provide details of
other approved methods of passing a chimney
connector through a combustible wall.
In Canada, this type of installation must conform to
CAN/CSA-B365, Installation Code for Solid Fuel
Burning Appliances and Equipment.
Fig. 9 Wall Pass-through using single wall chimney
connector with a ventilated steel thimble.
Min. 6"
(152mm)
Chimney clearance to sheet
steel supports and combustibles
2" (51mm) Min.
Glass Fiber
Insulation
Chimney Connector
Chimney Flue
Steel Thimble
with two 1"
(25mm) Ventilated
Channels
Masonry Chimney
constructed to NFPA 211
24 ga.Sheet
Steel Supports
ST274
Fig. 10 Wall Pass-through with ventilated steel thimble.
24 ga. Sheet
Steel Supports
24 ga. Sheet
Steel Supports
2" (51mm) Min.
Chimney clearance to sheet steel
supports and combustibles
2" (51mm)
Min.
Chimney Flue
2" (51mm) Min.
air space
Prefab
Chimney
Section
Prefab
Chimney
Section
Chimney
Connector
Masonry Chimney
constructed to NFPA 211
ST275
Fig. 11 CSA approved Wall Pass-through.
24 ga.Sheet
Steel Support
24 ga. Sheet
Steel Support
(one side only)
Min. 18"
(460mm)
Chimney clearance to sheet steel
supports and combustibles
2" (51mm)
Min.
Chimney Flue
Chimney
Connector
Masonry Chimney
constructed to CAN/CSA-
B365
Min. 18"
(460mm)
ST276