69. Hot-water boilers, thermal liquid boilers, steam generators, high-pressure boilers under 165 ft2 of heating surface, low-pressure boilers under 825 ft2 of heating surface and refrigerating apparatus of 25 HP and less that are installed before 1 September 1981 are subject to this Regulation from 1 March 1982.
R.R.Q., 1981, c. M-6, r. 1, s. 69.