WATER CIRCUIT
3
2
1
LEGEND
A
Hot water outlet
Cold water inlet
B
C
Gas
D
System return
System delivery
E
1
Magnesium anode
2
Water-heater sensor
Water-heater
3
4
Ignition electrode
5
Control electrode
Exchanger
6
7
Fan
8
Fumes pressure switch
Thermometer
9
10
Delivery sensor
7
6
5
4
24
23
22
21
A
B
C
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
8
9
10
11
12
14
15
25
20
19
D
E
Total safety thermostat
Burner
Expansion tank
Automatic air bleed valve
Circulator
Heating safety valve
Safety flow switch
Filling tap
Electric 3-way valve
Modulating coil
Hot water safety valve
Non-return valve
Hot water expansion tank
Pressure reading point
Gas valve
34
13
16
17
18