What does an intermittent pilot do during operation?

An intermittent pilot plays a critical role in the operation of gas-fired appliances, particularly in ensuring safety and efficiency. When the system is activated, the intermittent pilot ignites the main burner when needed and then shuts off once the main flame is established. This process streamlines fuel usage by only utilizing the pilot flame during ignition and eliminates the need for a constant flame, which can enhance safety and reduce energy consumption.

The main duty of the intermittent pilot is to successfully light the main flame when required and to stay on only as long as the main flame is functioning properly. This ensures that if the main burner goes out for any reason, the pilot can be immediately reignited to provide a reliable source of combustion. The design helps to minimize gas wastage and provides a safer operation by not having a constant pilot flame. Thus, the reason for identifying the option that states the pilot remains on with the main flame is that it accurately illustrates the function of maintaining ignition until the system is fully operational.