1.1 Scope 1. 1.1 This standard applies to newly produced, automatic storage water heaters having input ratings of 75,000 Btu per hour (21 980 W) or less (see Part IV, Definitions), hereinafter referred to as water heaters or appliances, constructed entirely of new, unused parts and materials: (a) For use with natural gas; (b) For use with manufactured gas; (c) For us
