675 IAC 30-4-25.1
675 IAC 30-4-25.1 "Instant-on water heater" defined
Cite as Ind. Admin. Code tit. 675, r. 30-4-25.1
Sec. 25.1. "Instant-on water heater" (also known as a tankless water heater or instantaneous water heater) means a water heater in which
water is heated by direct flame or passes over or through a heating coil or element to produce rapid heating of potable water that does not exceed
any of the following limits:
(1) Two hundred thousand (200,000) Btu per hour (or fifty-seven (57) kW) heat input.
(2) One hundred sixty (160) psig MAWP.
(3) Two hundred ten (210) degrees Fahrenheit outlet water temperature.