
________________________________________________________________________________
14
AST 14 C 259/00
SECT.3
HYDRAULIC DIAGRAMS AND COMPONENTS
3.1 HYDRAULIC DIAGRAMS
CTN
1. DHW temperature probe
14 Low water pressure switch
2. Modulating gas valve
15. 3 bar safety valve
3. CH temperature probe
16. Filler cock
4. Boiler nozzles
17. 10 l/min flow-limiting device
5. Boiler
18. Cold water flow switch
6. Ignition/detection electrode
19. Cold water filter
7. Safety thermostat
20. Heating return temperature probe
8. Bi-thermal heat exchanger
9. Flue gas hood
M Central heating system flow
10. Flue thermostat
C Domestic hot water output
11. Expansion vessel
G Gas inlet
12. Deaerator
F Cold water inlet
13. Circulation pump
R Central heating system return