Before starting a steam or hot water boiler, what should be verified?

Verifying that there is water in the boiler before starting a steam or hot water boiler is crucial for safe and efficient operation. It ensures that the boiler is filled to the appropriate level to prevent overheating and potential damage. If the boiler is started without sufficient water, it can lead to a condition known as "dry firing," where the heating elements or boiler tubes become excessively hot and can fail, leading to serious safety hazards, such as explosions or catastrophic system failures.

In addition to ensuring adequate water levels, other aspects like fuel supply, electrical connections, and air pressure are also essential for proper boiler operation. However, the presence of water is fundamentally critical, as the boiler's primary function relies on the heating and conversion of water into steam or hot water for heating purposes. Without it, no other systems can function effectively, making this verification step a top priority.