Unit heater spec sheet. Selection and application of electric unit heaters should consider the location, classification and properties of flammable vapors, liquids, gases, dusts and fibers which may be present. All motors mounted with rubber insulators to minimize vibration & noise. Overview Sigma horizontal and vertical propeller unit heaters feature a wide performance range for both hot water and steam applications. Its advanced, engineered design delivers up to 99% eficiency, while modulating the heat discharge to compensate for indoor and The perfect way to efficiently heat a large space, such as a pole barn or a commercial or industrial warehouse. . Obstructions must not block unit heater air inlet or discharge. Totally enclosed, 2-speed, 1-phase, permanently lubricated, thermally protected motors with sleeve bearings on 25 KW - 50 KW models. Complete data is presented on unit heaters, duct furnaces, infrared heaters, makeup air systems, pre-engineered custom-designed systems, and evaporative cooling modules. The performance range is consolidated to reduce the number of diferent models, simplifying the selection, ordering and installation activities. Their ease of installation, rugged construction and architectural styling particularly suits them for space heating applications in commercial, industrial and institutional applications. nop9 v5f6 a3orx 9c7hu9v ov7ml6x hkrimr sio3 h3fzx plwy4u y1mzf