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Article 801: Enactment and Update of the New York City Mechanical Code
§ 28-801.1 Update.
§ 28-801.2 Enactment of the New York City Mechanical Code.
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Chapter 2: Definitions
Chapter 3: General Regulations
Chapter 4: Ventilation
Chapter 5: Exhaust Systems
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Chapter 7: Combustion, Ventilation, and Dilution Air
Chapter 8: Chimneys and Vents
Section MC 801: General
Section MC 802: Vents
Section MC 803: Connectors
803.1 Connectors required.
803.2 Location.
803.3 Size.
803.4 Branch connections.
803.5 Manual dampers.
803.6 Automatic dampers.
803.7 Connectors serving two or more appliances.
803.8 Vent connector construction.
803.9 Chimney connector construction.
803.10 Installation.
803.10.1 Supports and joints.
803.10.2 Length.
803.10.3 Connection.
803.10.4 Connector pass-through.
803.10.4.1 Manufactured insulated chimney connectors.
803.10.4.2 Field-applied insulation for chimney connectors.
803.10.5 Pitch.
803.10.6 Clearances.
Section MC 804: Direct-Vent, Integral Vent and Mechanical Draft Systems
Section MC 805: Factory-Built Chimneys
Section MC 806: Metal Chimneys
Section MC 807: Changes In Appliance Fuels
Section MC 808: Reduction of Flue Size
Section MC 809: Chimney Supported from Equipment
Section MC 810: Test Run and Smoke Test
Section MC 811: Exhaust Gases from Internal Combustion Engines and Turbines
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Chapter 10: Boilers, Water Heaters and Pressure Vessels
Chapter 11: Refrigeration
Chapter 12: Hydronic Piping
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Appendix A: Chimney Connector Pass-Throughs
Appendix B: Reserved
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803.10 Installation.
Connectors shall be installed in accordance with Sections 803.10.1 through 803.10.6.
803.10.1 Supports and joints.
Connectors shall be supported in an approved manner, and overlapping joints shall be tight-fitting and fastened with sheet metal screws, rivets, welds or other approved means.
803.10.2 Length.
The maximum horizontal length of a single- wall connector shall not affect the capability of the system to produce adequate draft.
803.10.3 Connection.
The connector shall extend to the inner face of the chimney or vent liner, but not beyond. A connector entering a masonry chimney shall be cemented to masonry in an approved manner. Where thimbles are installed to facilitate removal of the connector from the masonry chimney, the thimble shall be permanently cemented in place with high-temperature cement.

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