Heating hazards are as follows:
(A) Any structure which has a fuel supply connection of material other than pipe or tubing of solid metal, or is not permanently fastened in place;
(B) Any structure which has equipment or vents so close to combustible materials or structural components, or so lacking in insulation, that there is danger of combustion;
(C) Any structure which has equipment burning liquid or solid fuel which is not connected to chimneys or flues, or which is connected to vents suitable for natural gas only; and
(D) Heating. Any structure which does not have operable central or other heating facilities installed and maintained in accordance with the fire safety standards, capable of safely and adequately heating all habitable rooms, bathrooms and water closet compartments in every dwelling unit located therein to a temperature of at least 70°F at a distance of three feet above floor level when the outside temperature is 0°F, and adequately vented.
(1993 Code, § 15.12.100) (Ord. 91-07-10(B), passed - -)