Protherm Leopard 24 BOV User And Installation Instructions Manual - page 16
of
34
15
1. manostat
1* chimney draft control system
(flue thermostat)
2. fan
2* draught damper
3. heat exchanger
4. burner
5. expansion vessel
6. pump
7. DHW flow rate sensor
8. water refilling valve
9. safety valve
10. CH inlet
11. DHW inlet
12. gas inlet
13. DHW outlet
14. CH outlet
15. drain valve
16. pressure sensor
17. backflow valve
18. By-pass
19. DHW temperature sensor
20. Gas valve
21. CH temperature sensor
22. overheat thermostat
fi
g. 7
Boiler schematic