9
7. PRACTICAL INSTRUCTIONS AND HEATING SYSTEM OPERATION ADVICE
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We recommend you to use a closed circuit, due to corrosion hazard related to open circuits.
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All connections must be well sealed and tightened.
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Before startup, the entire system needs to be tested with water under 2.4 bar pressure.
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It is recommended to discharge the water from the system at least once, to empty the system of dirt.
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For a system to which only the “Alfa term 27” stove is connected, we recommend an expansion vessel
of 25 (l) and not more than 18 (l), which should be fitted on the return pipe, as close to the boiler as
possible, and no block valves can be fitted between the boiler and expansion vessel.
INSTALLATION OF CLOSED CIRCUIT SYSTEM FOR
ALFA TERM 27 HEATING STOVE
Figure 7
1. Hot water boiler
2. Flue pipe connection
3. Distribution pipe
4. Closed expansion vessel
5. Safety valve
6. Radiator valve
7. Radiator
8. Air release valve
9. Circulation pump
10. Return pipe
11. Spigot for filling and discharge
12. Regulation valve
13. Thermo valve
14. Water supply system connection pipe
15. Hot water outlet
16. Pressure gauge
17. Safety valve connection
18. Thermo valve connection
