Operating instructions

Location of components
1. Flue hood with fan
2. Sealed chamber
3. Gas valve assembly
4. Electrical box
5. Pump
6. Automatic air separator and automatic vent
7. Multi-gas burner assembly comprising ignition and ionisation
electrodes
8. Combustion chamber
9. Main heat exchanger
10. Steel chassis complete with expansion VE
11. Air pressure switch
12. Overheat thermostat
13. TSS @J (mini cylinder)
14. Central heating control thermistor
15. Three way valve
16. Expansion vessel connecting tube
17. By pass adjustment screw
18. By pass
19. CH Flow isolating valve
20. Domestic hot water outlet
21. Gas service tap
22. Water service tap
23. CH Return isolating valve
25. Pressure relief valve
27. DHW pressure relief valve
28. TSS@ control thermistor
Fig.1