1.4
FUNCTIONAL DIAGRAM
1.5
MAIN COMPONENTS
KEY
1
Ventilator
2
Bithermal exchanger
3
D.H.W. sensor
4
Safety thermostat
5
Combustion chamber
6
C.H. sensor
7
Gas valve
8
Water pressure
9
Water pressure gauge
10
Circulator
11
Air vent valve
12
Expansion vessel
13
Automatic by-pass
14
System filling electrovalve
15
Domestic hot water flow switch
16
Boiler discharge
17
D.H.W. filter
18
3 BAR safety valve
19
C.H. return cock
20 C.H. flow cock
21
D.H.W. cock
22 Gas cock
23 Connection plate
KEY
1
Electrical panel
2
Gas valve
3
D.H.W. sensor
4
Combustion chamber
5
Bithermal exchanger
6
Smoke pressure switch
7
Positive pressure point
8
Negative pressure point
9
ø 60/80 adapter
10
Protection flange
11
Combustion analysis points
12
Ventilator
13
Expansion vessel
14
C.H. sensor
15
Safety thermostat
16
Air vent valve
17
Domestic hot water
anti-freeze thermostat 6°C
18
Circulator
19
3 BAR safety valve
20 Boiler discharge
21
Water pressure
22 C.H. return cock
23 C.H. flow cock
24
Water pressure gauge
25 System filling electrovalve
26 D.H.W. cock
27
Domestic hot water flow switch
28 Domestic hot water outlet curve
29 Domestic hot water
anti-freeze thermoresistance
30 Gas cock
Fig. 2
Fig. 3
63