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17
INSTALLATION
Water circuit diagram
A
B
C
D E
13
14
15
16
18
17
19
20
1
4
3
9
11
10
12
8
7
5
6
21
1. Air relief valve
3. Main Heat Exchanger
4. Detection/Ignition electrode
5. Central Heating Return Temperature Probe
6. Central Heating Flow Temperature Probe
7. Gas Valve
8. Secondary Exchanger
9. Safety valve
10. Automatic By-pass
11. Drain valve
12. Condensate Trap
13. Filling loop
14. Central Heating Filter
15. D.H.W. Flow Switch
16. Diverter valve
17. Pressure Gauge
18. Switch On/Off
19. Modulating Circulation Pump with air release valve
20. Expansion Vessel
21. Modulating Fan
A
C
E
13
14
18
17
19
20
21
1
4
3
9
10
12
11
7
5
6
Содержание 47-116-49
Страница 61: ... 61 MAINTENANCE GUIDE Unscrew the four screws to remove the heat exchanger 9 10 11 ...
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