Danfoss EPU 2370

22 VI.72.M4.02  Danfoss 11/97 BC-HM
System types 1-A, 1-B and 1-C - hot-water-service systems
System 1-A - Hot-water-service system with heat exchanger (flow control)
System 1-B - Hot-water-service system with storage tank (flow control)
Control principle for 1-A and 1-B:
PI control of hot-water-service
temperature (tap temperature) at S1.
Temperature held constant by motor
valve control M in heat exchanger/tank
primary circuit.
Circulation pump P1 controlled by relay
R1.