Plumbing, heating, electrical, ventilating, air-conditioning,
refrigerating, cooking, fire-protection and radiation-production equipment,
elevators, dumbwaiters, escalators and other mechanical additions,
installations or systems for the use of the building shall be installed,
located and maintained so that, under normal conditions of use, such
equipment and systems will not be a danger to health or welfare, a
danger because of structural defects or a source of ignition or a
radiation hazard and will not create excessive noise or otherwise
become a nuisance. Equipment and systems include but are not limited
to apparatus, devices, fixtures, piping, pipe hangers, pipe covering,
wiring, fittings and materials used as part of or in connection with
such installations.