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.