Which device controls the operation of the burner in each module of a modular heating plant?

The step controller is the device that manages the operation of the burner in each module of a modular heating plant. Its primary function is to control the firing rate of the burners based on the heating demand, ensuring that the system operates efficiently and effectively. This device sequences the operation of multiple burners, allowing for staged heating that can match the load more precisely, which is especially important in modular systems where the heating load can vary significantly.

By coordinating the activation and deactivation of burners, the step controller helps maintain the desired temperature and prevents short cycling, which can lead to inefficiency and increased wear on the equipment. This functionality is vital in achieving optimal performance and fuel efficiency in a modular heating plant, contributing to better overall system reliability and longevity.

While other devices, such as flow regulators, pressure switches, and temperature sensors, play important roles in a heating system by managing flow rates, monitoring pressure conditions, and providing temperature measurements, respectively, none directly control the burner operation in the same manner that a step controller does.