WATER HEATER HAVING A WATERWAY CHANGEOVER CONTROL APPARATUS AND METHOD FOR OPERATING THE SAME

摘要

A water heating system and method of operating the same. The system includes a first water heater having a first heating source of a first type. The system further includes a second water heater having a second heating source of a second type. A valve having a first interface that is connected to the cold water source, a second interface that is connected to a first cold water inlet of the first water heater, a third interface that is connected to a second hot water outlet of the second water heater, and a fourth interface connected to the hot water outlet of the first water heater. A motor positions the changeover valve to one of at least three positions. A control circuit includes a temperature sensor near the first hot water outlet of the first water heater, and a controller coupled to the first temperature sensor and the motor.