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Chapter 1: Administration
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Chapter 4: Ventilation
Chapter 5: Exhaust Systems
Section MC 501: General
Section MC 502: Required Systems
Section MC 503: Motors and Fans
Section MC 504: Clothes Dryer Exhaust
Section MC 505: Domestic Kitchen Exhaust Equipment
Section MC 506: Commercial Kitchen Hood Ventilation System Ducts and Exhaust Equipment
Section MC 507: Commercial Kitchen Hoods
Section MC 508: Commercial Kitchen Makeup Air
508.1 Makeup air.
508.1.1 Makeup air temperature.
508.1.2 Air balance
508.2 Compensating hoods.
Section MC 509: Fire Suppression Systems
Section MC 510: Hazardous Exhaust Systems
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Section MC 513: Smoke Control Systems
Section MC 514: Energy Recovery Ventilation Systems
Section MC 515: Postfire Smoke Purge Systems
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507.5.5 Dishwashing appliances.
The minimum net airflow for Type II hoods used for dishwashing appliances shall be 100 cfm per linear foot (155 L/s per linear meter) of hood length.
   Exception: Dishwashing appliances and equipment installed in accordance with Section 507.3.
507.6 Performance test.
A performance test shall be conducted upon completion of and before final approval of the installation of a ventilation system serving commercial cooking appliances. The test shall verify the rate of exhaust airflow required by Section 507.5, makeup airflow required by Section 508, and proper operation as specified in this chapter. The permit holder shall furnish the necessary test equipment and devices required to perform the tests. The performance test shall be witnessed by a special inspector.
Editor's note: For related unconsolidated provisions, see Appendix A at L.L. 2013/148.
Section MC 508: Commercial Kitchen Makeup Air
508.1 Makeup air.
Makeup air shall be supplied during the operation of commercial kitchen exhaust systems that are provided for commercial cooking appliances. The amount of makeup air supplied to the building from all sources shall be approximately equal to the amount of exhaust air for all exhaust systems for the building. The makeup air shall not reduce the effectiveness of the exhaust system. Makeup air shall be provided by gravity or mechanical means or both. Mechanical makeup air systems shall be automatically controlled to start and operate simultaneously with the exhaust system. Makeup air intake opening locations shall comply with Section 401.4. Makeup air shall be provided in accordance with the New York City Energy Conservation Code.
508.1.1 Makeup air temperature.
The temperature differential between makeup air delivered to the space and the air in the conditioned space shall not exceed 10ºF (6ºC) except where the makeup air contributes to satisfying the heating or cooling loads of the space and such temperature differential does not exceed 25°F (-38.9°C). The makeup air delivered to a compensating hood with front facing or side facing discharges shall be considered as being delivered to the space for the purposes of this section.

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