HOW IT WORKS – The Process: A hot water tap is opened. The opened tap allows water to flow through the water heater. An internal water flow sensor detects this flow. Upon flow detection, the flow sensor sends the activation signal to the computer board. The computer automatically ignites the burner. As water flows through the heat exchanger, it absorbs heat from the burner. By the time the water exits the heater, it has reached the designated set temperature. When the hot water tap is closed, the water heater automatically turns off