18
4
3
1. Flue connector
2. Air relief valve
3. C.H. Flow temperature probe
4. Main heat exchanger
5. Detection Electrode
6. Air/Gas Mixer
7. Secondary heat exchanger
8 Condensate trap
9. C.H. pressure relief valve
10. Gas valve
12. C.H. circuit lter
13. Modulating circulation Pump with air release
valve
14. D.H.W. Flow switch
15. Diverter valve
16. Switch On-Off
17. C.H. Return temperature probe
18. Modulating Fan
19. Silencer
20. Combustion Analysis Test Point
CLAS SYSTEM ONE