14X-8-802.2.2  Heat to be provided.
Dwelling units and sleeping units to which heat is furnished from a heating plant used in common for the purpose of heating more than one such unit must be supplied with heat from September 15th of each year to June 1st of the succeeding year so that the occupants may secure, without such undue restriction of ventilation as to interfere with proper sanitary conditions, a minimum temperature of 68ºF (20ºC) at 8:30 a.m. and thereafter until 10:30 p.m. and 66ºF (19ºC) at 10:30 p.m. and thereafter until 8:30 a.m. in all habitable spaces, toilet rooms, and bathrooms.