New York Low Pressure Boiler COF Practice

What is the maximum pressure a hydronic system should not exceed, if it runs at 150 psi?

1. 125 psig

2. 150 psig

3. 200 psig

4. 175 psig

The correct answer is: 150 psig

In a hydronic heating system designed to run at 150 psi, the maximum pressure that should not be exceeded is indeed 150 psig. This is primarily because operating at or above the system's design pressure can lead to potential safety hazards, including equipment failure, leaks, or even catastrophic damage. Hydronic systems are engineered for specific pressure limits, which are established to ensure safe and efficient operation. The maximum operating pressure is determined by the components within the system, such as pipes, boilers, pumps, and fittings, all of which are rated for certain pressure thresholds. If the pressure exceeds the system’s design capacity, it can result in excessive wear or failure of these components. Therefore, maintaining the pressure at 150 psi aligns with ensuring the longevity and safety of the system, adhering to both manufacturer recommendations and safety standards. Additionally, monitoring and maintaining system pressures within designated limits is crucial for the efficiency and performance of the heating system, making it essential to operate at or below the maximum rated pressure.