This rooftop inducer brochure explains constant operating pressure control.
A brochure featuring rooftop inducers is available from Tjernlund Products, Inc. The inducers, now being offered with a constant operating pressure control (COP), are designed for installation on top of masonry or metal chimneys. They provide proper draft for gas and oil heating systems and solid fuel fireplaces and stoves as well as exhaust functions for multiple clothes dryers in a common vent or controlling pressure in an exhaust chase serving multiple floors.