Mechanical Code…
- Chimney
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A vertical shaft enclosing one or more flues for conveying flue gases to the outside atmosphere.
- Factory-Built Chimney
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A listed chimney.
- Masonry Chimney
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A chimney of solid masonry units, bricks, stones, listed masonry units, or reinforced concrete, lined with suitable flue liners.
- Metal Chimney
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A chimney constructed of metal with a minimum thickness not less than one-hundred and twenty-seven one-hundredths (0.127) inch (3.23 mm) (No. 10 manufacturer’s standard gauge) steel sheet.
- Chimney, Residential Appliance-Type
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A factory-built or masonry chilnney suitable for removing products of combustion from residential-type appliances producing combustion gases not in excess of 1,000°F (538°C), measured at the appliance flue outlet. Factory-built Type HT chimneys have high-temperature thermal shock resistance.
- Chimney, Low Heat Appliance-Type
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A factory-built, masonry, or metal chimney suitable for removing the products of combustion from fuel-burning low-heat appliances producing combustion gases not in excess of 1,000°F (538°C) under normal operating conditions, but capable of producing combustion gases of 1,400°F (760°C) during intermittent forced firing for periods up to one hour. All temperatures are measured at the appliance flue outlet.
- Chimney, Medium Heat Appliance-Type
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A factory-built, masonry, or metal chimney suitable for removing the products of combustion from fuel-burning medium-heat appliances producing combustion gases not in excess of 2,000°F (1,093°C), measured at the appliance flue outlet.
- Chimney, High Heat Appliance-Type
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A factory-built, masonry, or metal chimney suitable for removing the products of combustion from fuel-burning high-heat appliances producing combustion gases in excess of 2,000°F (1,093°C), measured at the appliance flue outlet.
- Chimney Connector
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The pipe that connects a fuel-burning appliance to a chimney.
(Uniform Mechanical Code® 205.0)