What must liquid single-phase solar energy systems be equipped with according to the code?

Liquid single-phase solar energy systems must be equipped with expansion tanks according to the code. An expansion tank is crucial in these systems because it accommodates the expansion of the fluid within the system that occurs when it heats up. As the fluid warms, it expands, and without an expansion tank, pressure buildup could lead to system damage or failure. The tank provides a designated space for this increased volume, thereby maintaining system integrity and safety.

In the context of solar energy systems, utilizing an expansion tank helps ensure that the system operates effectively and reduces the risk of leaks or ruptures that can be caused by excessive pressure. This component is essential for maintaining the efficiency and reliability of the solar energy system while also adhering to safety regulations outlined in the North Carolina Mechanical Code.