A brochure featuring rooftop inducers is now available from Tjernlund Products, Inc. of White Bear Lake, Minn. The inducers, with a Constant Operating Pressure Control (COP2), are designed for installation on top of masonry or metal chimneys. The COP2 Control includes a VFD and Transducer to deliver precise draft or exhaust by modulating fan speed to maintain a constant negative pressure within a vent or exhaust system as draft or exhaust loads change. Key to this control is a simple 120 VAC wiring and easy set point adjustment.
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 for bathroom or kitchen exhaust fans.
Installation requires no special training or wiring. Other Tjernlund Rooftop Inducer features include a patented auxiliary cooling system to protect the inducer motor from excessive heat as well as backward inclined, stainless steel fan blades that repel soot build-up. The unique clam shell design—separate base plate and fan assembly—are hinged for easier installation and inspection or chimney cleaning.