What is the main application of an aquastat in boiler systems?

The main application of an aquastat in boiler systems is to monitor and regulate water temperature. This device acts as a temperature-sensing mechanism that ensures the water within the boiler remains at a set temperature, which is crucial for efficient heating and operation. By controlling the temperature, the aquastat enables the boiler to maintain optimal performance, prevent overheating, and ensure safety within the system. It typically works by opening or closing electrical contacts based on the temperature readings, which can trigger the burner or pump to operate accordingly.

Other options may relate to different functions in boiler systems, but they do not apply to the primary function of an aquastat, which is solely focused on temperature management.