This standard applies to newly produced gas-fired toilets, hereinafter referred to as appliances, constructed entirely of new, unused parts and materials: (a) For use with natural gas, (b) For use with manufactured gas, (c) For use with mixed gas, (d) For use with liquefied petroleum gases, (e) For use with LP gas-air mixtures, (f) For mobile home installation for use with liquefied petroleum gases only (see 1.2.12), (g) For mobile home installation convertible for use with natural gas and liquefied petroleum gases when provision is made for the simple conversion from one gas to the other (see 1.2.12), (h) For recreational vehicle installation for use with liquefied petroleum gases only (see 1.2.13), and (i) For recreational vehicle installation convertible for use with natural gas and liquefied petroleum gases when provision is made for the simple conversion from one gas to the other (see 1.2.13).