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, 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, fittings and materials used as part of or in connection with
such installations.