How must heating panels that are not labeled for field cutting be installed?

Heating panels that are not labeled for field cutting must be installed as pre-assembled units. This approach ensures that the panels maintain their structural integrity and performance characteristics as designed by the manufacturer.

When a heating panel is pre-assembled, it has undergone factory testing and quality control processes, which confirm that it operates safely and efficiently within specified parameters. Field cutting could alter vital components, such as electrical connections or heating elements, potentially leading to safety hazards, reduced efficiency, or voiding of the manufacturer's warranty.

By adhering to the manufacturer's instructions and installing these panels as pre-assembled units, installers can ensure compliance with the mechanical code and maintain a safe environment for the end-users. This practice also promotes reliability and longevity of the heating system, as the panels are used as intended without modifications.