Technical data

2.0 General Layout
5
2.1 Layout
1. Air Pressure Switch
2. Expansion Vessel
3. Burner Manifold
4. Automatic Air Vent
5. DHW Plate Heat Exchanger
6. Circulation Pump
7. Drain Off Point
8. Pressure Relief Valve
9. Position For Optional Integral Timer
10. Central Heating System Pressure Gauge
11. PCB
12. Control Box
13. 3-Way Valve Assembly
14. Flame Sensing Electrode
15. Spark Electrode
16. Burner
17. Primary Heat Exchanger
18. Fan Assembly
19. On/Off/Reset Selector Switch
20. Central Heating Temperature Control
21. Hot Water Temperature Control
22. Flame Failure
23. Safety Thermostat
24. Fault on Fan or Flue
25. Fault on Pump or Low System Pressure
26. Fault on Hot Water Sensor
27. Fault on Central Heating Sensor
28. Power On
29. Hot Water Mode
30. Central Heating / Hot Water Mode
31. Burner On
When neons 22 to 27 are constantly illuminated,
they indicate the temperature of the central heating
water.
18
17
16
14
15
13
12
11
10
9
19
20
21
10
9
7
6
3
4
5
8
2
1
30° 40° 50° 60° 70° 80°
2
1
0
4
3
bar
30° 40° 50° 60° 70° 80°
22 23
24
25 26
27
28
29 30 31