Sensors

Burner Type Steel (2) Draft Hood Outlet/Vent Size 3 Inch or 4 Inch (2) Gas Connection 1/2 Inch (2) Gas Type Natural (2) GPH Recovery 21 GPH at 90 Deg F (8) 43 GPH at 90 Deg F (1) 7 GPH at 90 Deg F (2) 70 GPH at 90 Deg F (1) Ignition Type Pilot Spark (2) Inlet/Outlet Connection 3/4 Inch Threaded (12) Number of Elements 1 (2) 2 (8) Power Rating of Elements 1500 Watt (2) 3500/4500 Watt (1) 4500 Watt (7) Relief Valve Details Temperature and Pressure Relief Valve Installed Tank Capacity 19 Gallon (2) 28 Gallon (1) 30 Gallon (1) 38 Gallon (1) 40 Gallon (3) 48 Gallon (1) 50 Gallon (2) 6 Gallon (1) Tank Dimensions 14 Inch Diameter x 16-3/16 Inch Height (1) 18 Inch Diameter x 24-7/16 Inch Height (2) 20 Inch Diameter x 48-15/16 Inch Height (1) 20 Inch Diameter x 49-7/16 Inch Height (1) 20 Inch Diameter x 62-7/16 Inch Height (1) 22 Inch Diameter x 31-13/16 Inch Height (1) 22 Inch Diameter x 49-7/16 Inch Height (1) 22 Inch Diameter x 56-3/4 Inch Height (1) 22 Inch Diameter x 56-9/16 Inch Height (1) 24 Inch Diameter x 34-5/8 Inch Height (1) 24 Inch Diameter x 49-7/16 Inch Height (1) Tank Height Including Draft Hood 63-1/2 Inch (1) 66-1/2 Inch (1) Tank Material Engineered Enameled Vitraglas (Lining), Steel (Surface) (11) Engineered Enameled Vitraglas Lining, Steel Surface (1) Tank Warranty 6 Year Limited Thermostat Type Fully Automatic, Fast Acting, Surface Mount (10) Type Damper (1) Non-Simultaneous, Lowboy (3) Non-Simultaneous, Upright (5) Utility (2) Venting Type Atmospheric (1) Power, Horizontal/Vertical (1)