Scope

1.1 These requirements cover radiant heating panels and heating panel sets, for use on ac supply system voltages not exceeding 600 V, designed for installation indoors in nonhazardous locations in household, commercial, and industrial applications, in accordance with Article 424, Part J, of the National Electrical Code, ANSI/NFPA 70.

1.2 These requirements cover products designed to be permanently connected to a supply circuit, and that are intended to form an integral part of the building construction after on-site assembly, installation, and connection.

1.3 These requirements do not cover the following:

1. Radiant heating panels intended to be installed in a dropped or suspended ceiling which are covered by the Standard for Fixed and Location-Dedicated Electric Room Heaters, UL 2021;
2. Heating panels, panel sets, and systems mounted under a floor covering in accordance with Article 424-99 of the National Electrical Code, ANSI/NFPA 70;
3. Heating cables and cable sets, which are covered by the Standard for Electric Space Heating Cables, UL 1673;
4. Cord connected and movable heating equipment;
5. Heating products containing an integral means of producing air flow;
6. Heating products containing a regulating thermostat as an integral part of the product construction.