What safety component is essential for the protection of a water heater during installation?

In the context of water heater installation, both over temperature protection and overpressure protection are critical safety components. Over temperature protection helps prevent the water heater from exceeding safe temperature limits, which could lead to overheating and potential damage or hazards, such as scalding or fire. This safety feature is designed to shut off the heating element or activate an alarm if the water reaches a dangerously high temperature.

Overpressure protection is equally important; it prevents excessive pressure build-up within the system, which could occur due to factors such as thermal expansion of water as it heats. A pressure relief valve is often used for this purpose, ensuring that if the pressure inside the tank exceeds acceptable limits, the valve will open to release the excess pressure safely.

Together, over temperature and overpressure protections work to ensure safe operation and longevity of the water heater, reducing the risk of accidents or failures during use. This makes the combined protection of both features essential during the installation of a water heater. Hence, selecting the answer that includes both safety measures reflects a comprehensive understanding of the necessary precautions needed for safely operating water heating systems.