Authority: IC 13-14-8; IC 13-17-3-4; IC 13-17-3-11

Affected: IC 13-15; IC 13-17

Sec. 19. The combustion of fuel to produce usable heat that is to be transferred through a heat-conducting materials barrier or by a heat storage medium to a material to be heated so that the material being heated is not contacted by, and adds no substance to the products of combustion.

(Air Pollution Control Division; 326 IAC 1-2-19; filed Mar 10, 1988, 1:20 pm: 11 IR 2371; readopted filed Oct 18, 2024, 2:09 p.m.: 20241113-IR-326230809RFA)