Manufacturer's installation instructions should be available on the job site at the time of what?

The availability of manufacturer's installation instructions on the job site is particularly critical at the time of inspection. During an inspection, code officials and inspectors need to verify that the installation adheres to the manufacturer's specifications and local codes. Having the instructions readily available ensures that all components are installed correctly and safely, as per the guidelines set forth by the manufacturer. This compliance is essential for ensuring the system's efficiency, safety, and warranty validity.

While installation is also an important time for referencing these instructions, inspections are specifically aimed at enforcing compliance. Ensuring that the correct installation methods were used can prevent costly mistakes and rework if issues are identified during the inspection phase. Therefore, having the manufacturer's instructions during inspection is vital for verifying that all aspects of the installation meet the required standards.