What safety feature automatically shuts down the burner when the water is too low?

• A. Pressure relief valve
• B. High-water cutoff
• C. Low-water cutoff
• D. Expansion tank

Answer: (C)

The low-water cutoff is a critical safety feature in boiler systems designed to prevent dangerous situations. When the water level within a boiler falls below a certain threshold, the low-water cutoff detects this condition and automatically shuts down the burner. This is essential because operating a boiler with insufficient water can lead to overheating, potentially causing the boiler to damage itself or even explode due to the extreme temperatures reached without the cooling effect of water.

This protective mechanism ensures that the boiler operates within safe parameters, maintaining the necessary water level required for efficient and safe function, thereby safeguarding the entire system and personnel who may be operating or near the boiler.