When changing a gas stove to an exhaust hood, what must be installed and wired to exhaust?

When changing a gas stove to an exhaust hood, what must be installed and wired to exhaust?

• A. A thermostat
• B. A solenoid valve
• C. A pressure regulator
• D. A vent damper

Answer: (B)

When a gas stove is installed under an exhaust hood, it must have an automatic gas shutoff interlock tied to the hood system. A solenoid valve serves this purpose: it is installed in the gas supply to the range and wired to the exhaust hood’s control so that gas flow is permitted only when the hood is operating. If the hood is turned off or fails to start, the solenoid closes, stopping gas supply to prevent unvented gas in the space. The other options don’t provide this automatic interlock: a thermostat controls temperature, a pressure regulator only sets line pressure, and a vent damper manages airflow without shutting off the gas.

When a gas stove is installed under an exhaust hood, it must have an automatic gas shutoff interlock tied to the hood system. A solenoid valve serves this purpose: it is installed in the gas supply to the range and wired to the exhaust hood’s control so that gas flow is permitted only when the hood is operating. If the hood is turned off or fails to start, the solenoid closes, stopping gas supply to prevent unvented gas in the space. The other options don’t provide this automatic interlock: a thermostat controls temperature, a pressure regulator only sets line pressure, and a vent damper manages airflow without shutting off the gas.