Tankless Water Principle

The principle behind tankless water heaters is simple:

tankless*This diagram illustrates tankless water heater design concepts only and does not accurately represent the water heater’s physical description.

  1. A hot water tap is turned on.
  2. Water enters the heater.
  3. The water flow sensor detects the water flow.
  4. The computer initiates the fan motor and sends a signal to the igniter to create an ignition spark.
  5. The gas ignites and flames appear within the burner chamber.
  6. Water circulates through the heat exchanger and then gets hot.
  7. Using thermistors to measure temperatures throughout the water heater, the computer modulates the gas and water valves to ensure proper output water temperature.
  8. When the tap is turned off, the unit shuts down.

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