The heat exchange unit is composed of plate heat exchanger, intelligent temperature control device, intelligent electronic control device, circulating pump, water replenishing pump, steady pressure expansion tank, filling (condensate) tank filter, valve, instrument, sensor, pipe base and SO on. The heat exchange unit has the characteristics of high efficiency, energy saving, intelligence and automatic optimization. It can be widely used in factories, offices, schools, residential quarters, villas and other civil buildings, shopping malls, hotels， hotels, resorts and other commercial buildings, air conditioning, bathing water, living water, swimming pool winter water, and can also be used in the system. Prepare industrial production process water and various places needing heat exchange.
 

Working principle
1. Circulatory system
2. Water replenishing system .
3. Control system