What type of control is required for steam and hot water boilers?

In the context of steam and hot water boilers, the low water cutoff control is crucial for ensuring safe operation. This control is designed to monitor the water level within the boiler, and its primary function is to prevent the boiler from running dry, which can lead to overheating and potential damage to the boiler itself or create hazardous situations.

When the water level falls below a certain threshold, the low water cutoff activates and shuts off the burner, thereby preventing further heating. This action is vital because running the boiler without sufficient water can cause the components to overheat, lead to boiler failure, or even catastrophic events such as explosions.

The implementation of the low water cutoff control is a key safety requirement in mechanical codes due to the dangers associated with steam and hot water boilers. It ensures that the system operates within safe limits and mitigates risks associated with low water conditions. This is why this type of control is specifically mandated for such boilers.