Ferroli T 18 Manuel D'installation, D'utilisation Et D'entretien page 54

6.4 Electrical components
6.5 Plumbing components
Key:
1 - Control panel model F047
2 - Safety thermostat
3 - Electronic board
4 - Vacuum switch
5 - Fume probe
6 - Heating chamber water probe
7 - Puffer-storage tank water probe
8 - Serial connection
9 - Level probe on pellet hopper
Key:
1 - Membrane expansion tank
2 - System drain cock
3 - Safety valve
4 - System filling connection
5 - Circulating pump
6 - Return pipe
7 - Pressure transducer
8 - Expansion tank connection
9 - Air venting valve
10- Delivery pipe
54 T 18