Liquid propane water heater with power-vent 3-position (9, 12 and 3 o'clock) rotatable blower. 120V power cord must be electrically grounded. Horizontal and vertical vent runs up to 180 equivalent feet with 4 In. diameter venting. Schedule 40 vent piping system with PVC, ABS, or CPVC pipe, vent distance up to 180 Ft. 2 In. insulation. Self-cleaning diffuser-end PEX dip tube. Glass lining, hot surface igniter, no standing pilot. Anode rod, installed T & P relief valve. Electronic gas control for more precise temperature control. Not for mobile/manufactured housing. Energy Star Qualified.