Designed for rugged industrial applications in hazardous locations where the possibility of explosion or fire exists due to the presence of certain flammable gases, vapors, powdered metals or dust. • Permanently sealed, liquid to air, finned tube heat exchanger core. • Ethylene Glycol to water mixture used as a heat transfer fluid in the heater core, providing -45° C. (-49° F) freeze damage protection. • High-performance electric motor driven fan blows air across finned tubes to effect uniform heat transfer and area heat distribution. • Manual Reset capillary type limit provides high temperature regulation and is rated for 6,000 cycles of service. • Stainless steel and aluminum pressure relief valve for overpressure. • A back-up contactor is included for additional protection. • 14 Gauge steel cabinet powder coated epoxy paint finish contains heater core, motor, and fan assembly. • Narrow gap safety fan guard shields all moving parts. • Adjustable louvers allow directional control of air. • Copper conductor wires enclosed in rigid metal conduits carry all electrical power. • Box lugs furnished for field connections within approved enclosure.