Which device prevents boiler operation when water level is too low?

Which device prevents boiler operation when water level is too low?

• A. Low-water cutoff prevents boiler operation when water level is too low
• B. Pressure relief valve prevents boiler operation when water level is too low
• C. Economizer prevents boiler operation when water level is too low
• D. Flame safeguard prevents boiler operation when water level is too low

Answer: (A)