ECU stands for Energy Conservation Unit and is also known as a Hot Water Heat Exchanger or Heat Recovery Unit?
Energy Conservation Unit or also known as a Hot Water Heat Exchanger. The ECU Hot Water Generator exchanger. The ECU is connected to a water heater and an air conditioner, heat pump, or refrigeration compressor. A small pump circulates “cold” water from the bottom of the water heater tank through the heat exchanger within the ECU where it interacts with the hot refrigerant gas from the compressor via a heat exchanger. The resulting heated domestic water is then pumped back to the water heater. Reclaiming waste heat from high compressor discharge temperatures is a proven principle of energy recycling that produces abundant hot water safely and economically. A 125 degree hot gas cut-in thermostat insures the ECU only runs when waste heat is available from the refrigerant system, a necessity for heat pumps. The 140 degree hot water cut-out thermostat shuts the system down when the incoming water is 140 degrees, indicating a full tank of hot water. Other options include: /F – freeze thermo
