HS-100 Series plenum smoke detectors provide early detection of smoke and products of combustion present in air moving through HVAC plenum return systems in commercial rooftop package unit applications. These devices are designed to prevent the recirculation of smoke in areas by the air handling system’s fans and blowers. Complete systems may be shut down in the event of smoke detection.
The HS-100 is designed specifically for applications where our standard external mount duct detectors cannot be utilized. Examples in addition to commerical rooftop package unit applications include air shafts, between-ceiling plenum spaces, dampers and applications requiring extremely low or no air velocity (= 100 ft/min).
The HS-100 Series smoke detector is fitted with a mounting base that will accept an ionization smoke detector head model 55000-225 or photoelectric smoke detector head model 55000-328. The duct unit supports one set of form "C" alarm contacts, one form "A" alarm contact and one form "B" trouble contact. The trouble contact supervises the presence of the input power and the removal of the smoke detector head.
This detector is not intended for open area protection nor should it be used for early warning detection or replace a regular fire detection system.