For commercial and industrial use The commercial industrial suspended OAS unit heater is designed for areas requiring a high level of air flow. This unit heater may be mounted horizontally (wall or ceiling) using supplied brackets or vertically using 4 threaded rods (not included). A variety of control options are available in kits or may be factory installed. A specific option is available for use of mine applications. Features Color • Standard: almond. Finish • Standard: epoxy/polyester powder paint. Voltage • 208V, 240V, 277V, 347V, 480V, 600V, 1 or 3-phase. • Some units may be field converted from 3 to 1-phase. Construction • 18 and 20-gauge steel. • Adjustable louvers to direct air flow. • High-limit temperature control with automatic reset. Fan • Totally enclosed factory-lubricated ball bearing motor (except for 15 to 25kW at 208/240V). • 58 dBA fan (2 to 10kW), 67 dBA fan (15 to 30kW) and 77 dBA fan (40 to 60kW). • Thermally-protected motor mounted in cold compartment. • Fan delay purges heater of residual heat. Heating element • Tubular heating elements; stainless steel (2 to 10kW); finned steel (15 to 60kW). • Concentric disposition of heating elements. • Factory sealed element upon request. Control • Factory-installed contactor and 240/208V control circuit standard (with transformer if necessary). • 24V relay, with or without transformer available. • 120V control circuit available. • Built-in thermostat available. Ouellet highly recommends to use a wall thermostat for greater comfort. Any remote thermostat or relay must be connected to the heater control Installation • Not for residential use in the United States. • Horizontal mounting: - 2 to 30kW: wall or ceiling using the supplied brackets which allow 360° rotation. - 40 to 60kW: ceiling only secured by the supplied 4 hooks of suspension. • Vertical mounting (except option -MD): - 2 to 60kW: using 4 threaded rods 1/2 in. X 13 UNC (not included). - Diffuser cones available. • Maximum recommended height (horizontal): 2 to 10kW: 8 ft. (2.4 m), 15 to 30kW: 10 ft. (3 m), 40 to 60kW: 15 ft. (4.5 m). • Protective screen allows minimum horizontal mounting height: - Canada 2 to 30 kW: 24 in. (610 mm), 40 to 60kW: 8 ft. (2.4 m). - United States 2 to 30 kW 6 ft. (1.8 m), 40 to 60kW: 8 ft. (2.4 m). • 30 °C (85 °F) maximum operating ambient temperature. terminal block.