Patent ID: 9335065
Filing Date: 2016-05-10
CPC Classification: C23F,F24H

Claim Text:
1. A method for operating a water heater, the method comprising: connecting one or more resistors between an anode rod extending into a volume of water stored by the water heater and an electrical ground such that a galvanic current flows from the anode rod through the one or more resistors to the electrical ground; receiving a feedback signal describing one or more electrical attributes of the volume of water stored in the water heater; after receiving the feedback signal determining a difference between the feedback signal and a target value; and after determining the difference, adjusting a resistance provided by the one or more resistors based on the feedback signal such that the galvanic current is either increased or decreased; wherein adjusting the resistance provided by the one or more resistors comprises adjusting the resistance provided by the one or more resistors when the difference is greater than threshold difference.