When a pilot gas valve is interrupted, what happens to the ignition transformer and pilot gas valve after the main burner ignition?

When the pilot gas valve is interrupted, it causes both the ignition transformer and the pilot gas valve to be de-energized and closed. This is a crucial safety feature in gas systems. The ignition transformer is responsible for providing the spark needed to ignite the pilot flame. When the pilot gas valve closes, it stops the flow of gas to the pilot burner, leading to the loss of the pilot flame.

In such scenarios, the ignition transformer must also deactivate to prevent any unsafe conditions, such as a continuous spark without a flame to ignite. This interlocking operation ensures that once the main burner has ignited, the pilot system is no longer consuming energy or allowing gas flow unnecessarily, thereby enhancing safety.

This systematic approach prevents gas leakage and reduces the risk of combustion in the absence of an intentional flame, ensuring the safe operation of the heating system.