MAIN COMPONENTS
8
7
6
5
4
3
2
1
LEGEND
Hot water expansion tank
1
2
100-liter vitrified heater
3
Water-heater sensor
Thermometer sensor
4
5
Control electrode
6
Ignition electrode
Hot water circulator
7
8
Heating circulator
9
Fumes pressure switch
10 Fumes fan
11 Fumes exchanger
9
10
11
12
13
14
15
16
17
18
31
30
0
29
28
12 3-bar safety valve
13 Burner
14 Gas valve
15 Ignition transformer
16 Modulating coil
17 6-bar safety valve
18 Heater draining valve
19 Heater system draining valve
20 Magnesium anode
21 Heating system filling valve
22 Thermo-hydrometer sensor
32
33
60
40
90
0
120
4
0
3
1
2
27
23 Delivery sensor
24 No water pressure switch
25 Expansion tank
26 Automatic air bleed valve
27 Malfunction warning light
28 ON/OFF warning light
29 Lock-out warning light
30 Hot water adjustment potentiometer
31 Function selector
32 Heating adjustment potentiometer
33 Thermohydrometer
29
26
25
24
23
22
21
20
19