WATER HEATER AND METHOD OF CONTROLLING A WATER HEATER

摘要

A water heater is provided which comprises a water storage tank made of enameled metal, an anode electrode (e.g. an anode rod) at least partly inside the water storage tank and a corrosion protection unit configured to impress current into the anode to provide a corrosion protection for the water storage tank. The corrosion protection unit further comprises a microprocessor configured to control the impressing of the current to the anode electrode during impression process cycles and to control the operation of the corrosion protection. The corrosion protection unit furthermore comprises a battery unit or an accumulator unit configured to supply energy to the microprocessor during grid power outages. The microprocessor is configured to activate the power saving mode during grid power outages during which an amount of impressed current and/or an impression process cycle is reduced.

主权项

1. A water heater, comprising:
a water storage tank made of enameled metal; an anode electrode arranged at least partly inside the water storage tank; and a corrosion protection unit configured to impress current into the anode electrode during impression process cycles to provide a corrosion protection for the water storage tank; wherein said corrosion protection unit comprises:
a microprocessor configured to control the impressing of current to the anode electrode and to control operation of the corrosion protection; anda battery unit or accumulator unit configured to supply energy to the microprocessor during grid power outages; wherein said microprocessors is configured to activate a power saving mode during grid power outage; and wherein, in the power saving mode, an amount of impressed current and/or a number of impression process cycles is reduced.