29
MAIN COMPONENTS
LEGEND
1
Hot water expansion tank
2
100-liter vitrified heater
3
Water-heater sensor
4
Thermometer sensor
5
Control electrode
6
Ignition electrode
7
Hot water circulator
8
Heating circulator
9
Fumes pressure switch
10
Fumes fan
11
Fumes exchanger
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
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
0
120
60
90
40
4
2
0
1
3
0
1
2
3
4
5
6
7
8
31
30
29
28 27
32
33
17
16
13
12
11
10
9
18
14
15
19
22
24
25
26
21
20
23