Controller and process to operate a water heater

Abstract

A method may heat unheated water using a heating unit of the water heater thereby providing heated water. The method may mix heated water with unheated water using a mixing valve of the water heater thereby providing mixed water to at least one water consumer, the mixed water having a desired consumer water temperature. The method may determine the desired consumer water temperature of the mixed water provided to the at least one water consumer. The method may operate the heating unit of the water heater on basis of the determined desired consumer water temperature using a controller of the water heater such that the water temperature of the heated water corresponds to the desired consumer water temperature of the at least one water consumer thereby minimizing the amount of unheated water mixed with the heated water.

Dependencies are inferred from the claim text.