What is the maximum setting of a temperature/pressure relief valve on a hot water heater?

The maximum setting of a temperature/pressure relief valve on a hot water heater is indeed 210° F and 150 psi. This setting is critical for safety and adherence to industry standards. The temperature/pressure relief valve is designed to protect the hot water heater from excessive temperature and pressure that could lead to a dangerous situation, such as an explosion.

The 210° F limit ensures that, in case of a malfunction or failure of the heating system that causes the water temperature to rise excessively, the valve will open and release steam or hot water before reaching levels that could be hazardous. Similarly, the 150 psi setting is established to prevent the system from exceeding safe operational pressure levels. This helps maintain the structural integrity of the hot water tank and the piping system.

Moreover, building codes and safety standards typically specify these maximum settings to ensure a uniform approach to safety in hot water heating systems. This understanding is essential for any gas technician, especially when working on installations or repairs, as adhering to these maximum settings is crucial for the safety and functionality of the system. Other options might suggest lower thresholds, which would not comply with standard safety practices and could lead to unsafe operational conditions.