What happens to the main gas valve after the flame is detected?

The main gas valve opens to allow gas flow once the flame is detected. This step is crucial in systems that rely on flame sensors for safety and operational efficiency. The flame detection serves as a confirmation that combustion is occurring safely and effectively.

When the sensor detects the flame, it signals the ignition system that it is safe to allow gas to flow into the burners. This automated response helps prevent gas from leaking into the combustion area without a flame, which could lead to dangerous conditions.

In systems designed with safety in mind, the opening of the gas valve upon flame detection minimizes risks and ensures that fuel is only supplied when there is a verified flame. This interlock system helps maintain safety standards and optimizes the operational efficiency of gas appliances.