Ventilating systems shall be installed and maintained
so that the rapid spread of heat, flame or smoke through the system
will be prevented and so that under conditions of use the temperature
of any combustible material adjacent thereto or in contact therewith
will not exceed a safe temperature.
Ducts passing through or located within combustible
construction shall be separated from such construction by a clearance
of at least one-half (1/2) inch or by a noncombustible insulating
material at least one-fourth (1/4) inch thick.
Exhaust air from a dwelling unit or a space whose
contents may emit odors, fumes or vapors shall not be circulated to
other occupied spaces within the building.[1]
Editor's Note: Former §§ 80-69, Air-intake and exhaust openings in multiple dwellings, 80-70, Ventilation of enclosed and public spaces in multiple dwellings, and 80-71, Safety controls in multiple dwellings, and Articles XIV, Fuel Oil (§§ 80-72 through 80-74), and XV, Fire Protection in Multiple Dwellings (§§ 80-75 through 80-78), which immediately followed this subsection, were repealed 9-28-1993 by L.L. No. 23-1993 and 11-8-1993 by L.L. No. 28-1993.