Pre-purge is the the process of energizing the burner blower for a period of time before allowing fuel to enter the combustion chamber. This process is also referred to as __________.

Question

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Pre-purge is a valve-on-delay process, where the valve is kept closed for a certain period of time to allow the blower to energize and clear any potential fuel buildup before igniting the fuel. Motor-off-delay refers to a different process where the blower continues to operate after fuel shut-off to remove any residual combustion products.

Pre-Purge Is the The Process of Energizing the Burner Blower