Which component controls the operation of the boiler feed pump in many installations?

The float device is essential in controlling the operation of the boiler feed pump because it automatically manages the water level within the boiler. As the water level drops, the float descends, triggering the feed pump to activate and replenish the water supply. This ensures that the boiler maintains an adequate water level for safe and efficient operation.

Unlike a digital thermostat, which primarily regulates temperature rather than water levels, the float device directly interacts with the water reserve in the boiler system. Pressure gauges serve to monitor the pressure within the system but do not directly control the operation of the feed pump. Similarly, a manual valve may control the flow of water but lacks the automatic response mechanism that a float device provides, thus being less effective in maintaining system equilibrium.