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2113.11 Flue lining (material).
Masonry chimneys shall be lined. The lining material shall be appropriate for the type of appliance connected, according to the terms of the appliance listing and the manufacturer's instructions.
2113.11.1 Residential-type appliances and low heat appliances (general).
Flue lining systems shall comply with one of the following:
1. Clay flue lining complying with the requirements of ASTM C 315.
2. Listed chimney lining systems complying with UL 1777.
3. Factory-built chimneys or chimney units listed for installation within masonry chimneys.
4. Other approved materials that will resist corrosion, erosion, softening or cracking from flue gases and condensate at temperatures up to 1,800°F (982°C).
2113.11.1.1 Flue linings for specific appliances.
Flue linings other than those covered in Section 2113.11.1 intended for use with specific appliances shall comply with Sections 2113.11.1.2 through 2113.11.1.4 and Sections 2113.11.2 and 2113.11.3.
2113.11.1.2 Gas appliances.
Flue lining systems for gas appliances shall be in accordance with the New York City Fuel Gas Code, and ULC-S635.
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