A thermal expansion tank must be supported according to what?

A thermal expansion tank must be supported according to the manufacturer's instructions because these guidelines are specifically tailored to the design and engineering of the tank in question. Manufacturers provide detailed specifications that ensure proper installation, safe operation, and long-term reliability. These instructions include information on mounting, support requirements, and any specific parameters that need to be adhered to, such as weight distribution and environmental conditions.

While local building codes, industry standards, and safety regulations are important considerations in the installation of plumbing systems, the manufacturer's instructions take precedence in ensuring that the specific product is supported correctly. This adherence not only helps in maintaining the warranty of the tank but also ensures that it functions safely and effectively, preventing any potential issues like leaks or failures due to inadequate support.