New York Low Pressure Boiler COF Practice

Which component in a hydronic system is often evidenced by a steam pressure control?

1. Expansion tank

2. Pump

3. Fuel regulating governor

4. Heat exchanger

The correct answer is: Fuel regulating governor

In a hydronic system, the presence of a steam pressure control is primarily associated with the fuel regulating governor. This component is responsible for maintaining the correct fuel flow to the boiler, which directly impacts the steam production and pressure levels within the system. The steam pressure control works to ensure that the steam pressure remains within desired parameters, adjusting fuel input accordingly to meet heating demands. When there are fluctuations in demand for heating, the fuel regulating governor responds by modulating the fuel supply, which in turn helps to stabilize the pressure of the steam produced. This functionality is essential for efficient boiler operation and for preventing pressure-related issues. The other components mentioned play different roles within the system: the expansion tank is focused on absorbing changes in water volume due to temperature fluctuations; the pump circulates the water or steam through the system; and the heat exchanger primarily facilitates heat transfer between different fluids. None of these components directly control steam pressure in the same way that the fuel regulating governor does. This distinction clarifies why the fuel regulating governor is the correct answer in relation to steam pressure control in a hydronic system.