Main Components - DeDietrich 24 Installation And Service Manual

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4 Description of the product
4.3

Main components

Fig.97 Functional diagram
2
1
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Fig.98 Heating only boiler (water unit part)
158 INIDENS
3
4
10. Gas valve
11. Heating system and pump air vent valve
5
12. Pump
13. Domestic hot water priority sensor
6
14. Cable gland
7 15. Control panel with boiler PCB and display
16. Domestic hot water plate exchanger/Bypass pipe
17. Domestic hot water plate heat exchanger fastening screws
8
18. Siphon
19. Safety valve (3 bar) and heating system water drain cock.
9
20. Pressure sensor (heating circuit)
21. 3-way valve
10
22. Air-gas silencer assembly
23. Safety thermostat (limit)
11
24. Heating circuit water flow sensor (°C)
25. Condensate drain pipe connection towards discharge
26. Detection/ignition electrode
12
27. Burner flange
14
28. Flue gas temperature sensor
29. Boiler earthing socket
30. Housing
13
31. Hooks for the wall bracket
15
BO-7805044
BO-7805044-1
1. Flue gas tower
2. Exhaust flue checkpoint
3. Air inlet checkpoint
4. Expansion vessel air control/filling valve
5. Expansion vessel
6. Hydraulic circuit-expansion vessel connection pipe
7. Air-gas collector
8. Fan (air-gas assembly: Control board and mixer valve)
9. Heating return sensor
7804841 - 02 - 20012022