4
Fig.1
1
2
3
4
5
34
9
7
8
35
14
11
15
16
17
18
Fig.2
2
Location of components
1. - Air pressure switch
2. - Steel chassis complete with expansion vessel
3. - Main heat exchanger
4. - Combustion chamber
5. - Multi- gas burner assembly comprising ignition and
ionisation electrodes
6. - Automatic air separator and automatic vent
7. - Pump
8. - Electrical box
9. - Sealed chamber
10. - DHW detector
11. - Gas valve assembly
12. - CH water filter
13. - DHW activator
14. - Flue hood with fan
15. - Hot water control thermistor
16. - Central heating control thermistor
17. - Three way valve
18. - Secondary heat exchanger
19. - Two position Selector switch
OFF
«
O
»
ON
«
I
»
20. - Domestic hot water temperature adjustment
21. - Heating flow temperature adjustment
22. - Heating temperature indicator
23. - Green indicator - Power ON
24. - Orange indicator - Burner ON
25. - Red indicator - Lock out / flame failure
26. - Reset button
27. - Pressure gauge
28. - DHW mode indicator
29. - Heating mode indicator
30. - Heating Flow isolating valve
31. - Gas service tap
32. - Water service tap
33. - CH Return isolating valve
34. - Central Heating water pressure switch
35. -.Overheat safety cutout
36. - Flue sampling point
I
reset
Fig.3
19
20
21
23
25
22
26
24
27
10
28
29
13
30
31
33
32
12
6
36
Description
