Exterior components of plumbing, processing, heating, cooling and ventilating systems (including but not limited to piping, tanks, stacks, collectors, heating, cooling and ventilating equipment, fans, blowers, ductwork vents, louvers, meters, compressors, motors, incinerators, ovens, etc.) shall not be directly visible from a height of five (5) feet above any ground or ground floor elevations at a distance closer than five hundred (500) feet from the closest building wall on any lot.