A. 
Except as otherwise mandated by federal law or regulation, residential buildings intended for occupancy between the 15th day of September and the 15th day of June of the following year shall be provided with heating equipment designed to maintain a temperature of not less than 68º F. at a distance of three feet from exterior walls and at a level of five feet above the floor, in habitable spaces, kitchenettes, bathrooms and toilet rooms. The capability of the heating equipment to maintain such indoor temperatures shall be based on an outside temperature of -10º F.
B. 
Except as otherwise mandated by federal law or regulation, in multiple dwellings, adequate heat shall be provided to maintain the indoor temperature in habitable spaces, kitchenettes, bathrooms and toilet rooms at 68º F. from September 1 to June 30 of the following year when the outside temperature falls below 55º F.
Fuel-burning heat-producing equipment shall be installed and maintained so as not to violate the Fire Prevention Code in force in the City.
Ducts and other air-handling equipment used for heating shall conform to the requirements of such equipment used for ventilating purposes.
Fuel-burning water heaters shall not be located in sleeping rooms, bathrooms or toilet rooms.
Fuel-burning equipment shall be permanently fastened and connected in place. Fuel supply connections to such equipment shall be made with approved pipe or with an approved flexible tubing connector and be protected against mechanical injury and corrosion.
Where heat-producing equipment is installed on or adjacent to combustible materials, the location, insulation, clearance and the control of the equipment shall be such that the temperature on the surface of the combustible materials will not exceed a safe temperature.
A. 
Direct-fired heat producing equipment and the enclosure in which it is located shall be provided with a supply of air adequate to replenish that consumed by complete combustion at the rated gross output of the equipment and for the ventilation of the enclosure to prevent the accumulation of heat.
B. 
Such air shall be supplied by means of one or more openings to the exterior or by means of fixed openings to interior spaces which open to the exterior.
A. 
Equipment for burning solids or liquid fuel shall be connected to suitable chimneys or flues and shall not be connected to gas vents. Unvented heaters burning liquid fuel shall be prohibited.
B. 
Fuel-burning space heaters located in sleeping rooms or rooms normally kept closed shall be connected to a suitable chimney, flue or gas vent.
C. 
Gas-fired equipment shall be connected to a suitable chimney, flue or gas vent when the discharge of products of combustion into the space where the equipment is installed would be a hazard.
A. 
Equipment capable of developing hazardous pressures or temperatures shall be provided with means to relieve safely such pressures and temperatures.
B. 
Controls for the safe operation of automatically operated heat-producing equipment shall be provided to function as follows:
(1) 
When failure or interruption of flame or ignition occurs, the fuel supply shall be cut off.
(2) 
When a predetermined temperature or pressure is exceeded, the input of additional heat shall be prevented or reduced to a safe rate.
(3) 
When the water level in a steam boiler boils below a predetermined level, the fuel supply shall be cut off.
(4) 
When failure or interruption of pilot light or main burner in gas equipment occurs, the fuel supply to each pilot light and main burner shall be cut off.
Fuel-burning equipment for garages serving multiple dwellings shall be located in heater rooms, except that equipment burning gas or liquid fuel located in the vehicle garage space shall be permitted in stories at or above grade where the equipment is elevated so as not to be exposed to possible accumulation of flammable gases.