2311.8.3.2 Operation.
FC § 2311.8.3.2
The mechanical exhaust ventilation system shall operate continuously. Exceptions: 1. Mechanical exhaust ventilation systems that are interlocked with a gas detection system designed in accordance with FC 2311.8.4.
2.Mechanical exhaust ventilation systems in repair garages that are used only for repair of vehicles fueled by liquid fuels or odorized gases, such as CNG, where the ventilation system is electrically interlocked with the lighting circuit.











