LEGEND
1. AIR PRESSURE SWITCH
2. SAFETY THERMOFUSE
3. HEATING SENSOR
4. HEATING SAFETY THERMOSTAT
5. IONIZATION ELECTRODE
6. EXPANSION TANK
7. IGNITION TRANSFORMER
8. FLOWMAX BURNER UNIT (GAS MANIFOLD + BURNER)
9. AUTOMATIC AIR VENT VALVE
10. FAN
11. PUMP
12. CONDENSATE TRAP
13. AIR VENT VALVE 1/4
14. SAFETY VALVE 3/4
15. D.H.W. SENSOR
16. EXHAUST HOOD
17. PRIMARY CONDENSING HEAT EXCHANGER
18. D.H.W. EXCHANGER
19. IGNITION ELECTRODE
20. VENTURI
21. DIVERTER ACTUATOR VALVE
22. ELECTRONIC GAS VALVE
23. WATER PRESSURE SWITCH
24. NO-RETURN VALVE
25. WATER PRESSURE GAUGE
26. FILLING TAP
27. ELECTRONIC FLOWSWITCH
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