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

In situations where there is a conflict between a manufacturer's instructions and the provisions set forth in the plumbing code, the code provisions take precedence. This is because the code is established to ensure safety, public health, and welfare in plumbing systems. It incorporates regulations based on industry standards, best practices, and thorough risk assessments. Following the code ensures that installations meet the minimum requirements necessary for safe operation and compliance with local laws.

Understanding this hierarchy is essential for professionals in the plumbing field. While manufacturers provide specific guidance on their products, these are typically based on ideal scenarios. However, the plumbing code factors in broader considerations such as building safety, compatibility with existing systems, and public health implications.

In essence, adhering to the code ensures that all installations are safe and legally compliant, thus protecting both the installer and the end users. Additionally, inspection processes are typically based on code compliance, so following the code provisions helps facilitate smoother inspections and approvals.