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NYC Mechanical Code

§ 510.9.2 — § 510.9.2

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What is NYC MC § 510.9.2?

Quick Answer

This section specifies the required clearance to combustibles for ducts based on the temperature of exhaust gases, as outlined in Table 510.9.2. It mandates that exhaust gases exceeding 600°F must be directed to a chimney according to Section 511.2. Applies to building owners managing duct systems.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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510.9.2 Clearance to combustibles.

MC § 510.9.2

Ducts shall have a clearance to combustibles in accordance with Table 510.9.2. Exhaust gases having temperatures in excess of 600°F (316°C) shall be exhausted to a chimney in accordance with Section 511.2. Table 510.9.2Clearance to Combustibles Type of Exhaust or Temperature of Exhaust(°F)Clearance to Combustibles(inches)Less than 100 1 100 - 600 12 Flammable vapors 6 For SI: 1 inch = 25.4 mm, °C = ((°F) - 32)/1.8.

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