Ohio Boiler Licensing Practice Exam

When lighting a low-pressure gas burner on a liquid propane (LP) boiler, the final step is to lift the manual reset valve. This step is essential because it allows the ignition system to be activated after ensuring that all safety protocols and procedures are observed. It serves as a safety mechanism, requiring manual intervention to prevent unintentional ignition. By lifting the manual reset valve last, the operator guarantees that all preliminary steps—such as confirming that the gas supply is secure and the ignition sequence is prepared—are correctly performed before allowing gas to flow into the burner.

This careful sequence ensures that the system is primed for safe ignition, minimizing the risk of accidents or equipment damage associated with premature ignition or gas leak issues.