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// CODE SNIPPET

506.8.2 Motorized Louvers

California Plumbing Code 2019 > 5 Water Heaters > 506.0 Air for Combustion and Ventilation > 506.8 Louvers, Grilles, and Screens > 506.8.2 Motorized Louvers

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Motorized louvers shall be interlocked with the appliance so they are proven in the full open position prior to main burner ignition and during main burner operation. Means shall be provided to prevent the main burner from igniting should the louver fail to open during burner startup and to shut down the main burner if the louvers close during burner operation. [NFPA 54:9.3.7.3]

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