Meets the standby loss requirements of the U. S. Department of Energy and current edition of AHRAE/IES 90.1.
Energy efficiency per IEC 60379:2007 is 93.7 %
Heavy-duty medium watt density elements (three/immersion heater) have incoloy sheathing: provide excellent protection against oxidation and scaling.
Glasslined tank. Two sizes: 72 and 105 gallon capacity. Tank interior is coated with glass specially developed by A. O. Smith for water heater use. Tanks rated at 150 PSI (1034 kPa) working pressure
Protects all elements, thermostats, and internal wiring circuits against excess current flow. Meets National Electrical Code requirements that non-ASME tanks must have internal fusing when current draw exceeds 48 amps. Available as an option on Canadian built heaters.
208, 240 and 480V single-phase and three-phase delta. Convertible from threephase to single-phase (in field) and vice versa. 277V single-phase also available.
Terminal block is factory installed. Just bring the electrical service to the heater and connect to block.
One temperature control (adjustable through a range of 120° to 181°F) and manual reset high temperature cut-off per element. Thermostat step control may be achieved by varying settings on individual temperature controls. Located behind hinged control compartment door for quick, easy access.
Surface mounted thermostats
Simplified circuitry, color coded for ease of service
Two anode rods for maximum corrosion protection
Cabinet has bonderized undercoat with baked enamel finish
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