In a cast iron modular heating boiler, what controls the operation of the burner in each module?

In a cast iron modular heating boiler, the operation of the burner in each module is controlled by a step controller. This device is designed to manage the burner’s operation in a way that ensures efficient and consistent heating by adjusting the burner output based on the demand for heat.

The step controller typically operates by modulating the burners in steps, which allows it to respond dynamically to the heating requirements of the system. As the temperature changes in the building or process, the step controller can activate or deactivate certain modules to match the heating demand without overshooting or undershooting the desired set point. This leads to optimized fuel consumption and enhanced system efficiency.

While temperature sensors, thermostats, and flow controllers are important components in thermal systems, they play distinct roles. Temperature sensors monitor the actual temperature, thermostats set desired temperature settings, and flow controllers regulate the flow of heating medium (like water) but do not directly manage the burner operation in modular systems. The step controller, therefore, is essential for coordinating the operation of multiple burners effectively, ensuring that the modular heating system meets its operational needs efficiently.