When the manufacturer’s instructions conflict with code provisions, what should be followed?

When it comes to resolving conflicts between a manufacturer's instructions and code provisions, the established protocol is to adhere to the code provisions. Codes are developed through rigorous processes, involving extensive research, analysis, and regulation to ensure safety, health, and welfare in plumbing systems and installations. They represent the minimum standards required for safeguarding public health and ensuring safe installation practices.

Manufacturer's instructions can provide valuable insights specific to a product’s performance and use, but they are not designed to supersede the broader requirements set forth by local or national plumbing codes. Codes are enforceable regulations, whereas instructions may vary between manufacturers and are not universally applicable.

By prioritizing code provisions, you ensure compliance with the legal and safety standards recognized in the industry. This choice protects both the installer and the end-user from potential risks associated with improper installations or materials that do not meet the necessary safety thresholds. Following code provisions also helps maintain consistency across various installations, leading to improved overall system reliability.