INSTALLATION SCHEME OF CLOSED CENTRAL
HEATING SYSTEM FOR CENTRAL 23
Figure 9a
1. Hot-water boiler
2. Chimney pot
3. Distribution duct
4. Expansion tank
5. Safety valve
6. Radiator valve
7. Radiator
8. Puff pipe
9. Circulating pump
10. Return duct
11. Open and shut-off valve
12. Regulating valve
13. Thermoregulation valve
14. Connecting duct water supply network
15. Hot-water outlet
16. Manometer
17. Safety valve and thermoregulation valve connector