E.C.A. KRONOS KR 24 HM - Page 7

1. Pump PWM Interface 15. Turbine
2. Siphon Level Probe 16. Outdoor Temperature Sensor (Opt.)
3. Function Inactive 17. Pump
4. Function Inactive 18. Fan
5. Room Thermostat 19. Gas Valve
6. Gas Valve Modulation 20. Supply Inlet
7. Fan Encoder 21. 3 Way Valve
8. Temperature Sensor (CH Output) 22. Domestic Water Switch
9. Water Pressure Switch 23. Central Heating Circuit Switch
10. Water Pressure Sensor 24. On / Off / Reset / Summer / Winter Switch
11. Safety Thermostat 25. Fuse
12. Air Pressure Switch 26. Liquid Crystal Display
13. Domestic Water Temperature Sensor 27. Fault LED
14. Water Flow Switch (Opt.) 28. Ignition Electrode and Ionization
Figure 1
5
Circuit Diagram