What is the requirement for obtaining manufacturer's recommendations when installing plastic pipes?

The requirement for obtaining manufacturer's recommendations when installing plastic pipes is crucial for ensuring the installation is done correctly and in compliance with safety regulations. Having these recommendations available to the inspector is essential because it provides a reference to verify that the installation meets the necessary standards, codes, and guidelines specific to the materials used. Inspectors utilize these written guidelines to assess the quality and safety of the plumbing work being performed. Such documentation helps prevent future issues related to performance, durability, and warranty claims, ensuring that the installation complies with established safety protocols.

The options that suggest display to the homeowner or permit only verbal recommendations do not meet the need for an official verification process by a qualified inspector, which is critical for accountability and safety in plumbing installations. Written recommendations being optional undermines the importance of having documented guidance that can safeguard the installation process and assist in any inspections that may be performed.