Thermal conduction water (media of full leve) stored in the trunk under atmospheric state is heated below the boiling point and conveys heat indirectly to the independent internal heat exchanger.It is the efficient and simplified structure system to save energ:y and resource that combines the conventional hot water device and the isolated heat exchanger.

Applicable to multipurpose use
Various uses can be applied to each unit of the built-in isolated heat exchangers. Not onily the 2-circuit (2 purposes) room heater and hot water supply,but also the 3-circuit application if we can attach the circuit for tank circulation to the applliance.