What is the purpose of installing an automatic limiting device on a boiler?

The purpose of installing an automatic limiting device on a boiler is primarily to prevent exceeding maximum pressure or temperature. This device is a crucial safety feature, as it helps to ensure that the boiler operates within safe parameters. If the temperature or pressure reaches a predetermined limit, the automatic limiting device will intervene, shutting off the system or activating safety protocols to mitigate potential hazards, such as equipment failure or explosive conditions. This function is essential for maintaining the integrity of the boiler system, protecting personnel, and ensuring compliance with safety regulations.

The other choices mention benefits like energy efficiency, automatic cleaning, and user control, which, while potentially advantageous in some contexts, do not specifically address the critical safety function of preventing dangerous operating conditions that the automatic limiting device is designed to achieve.