Technical information

15
2.12. WATER CIRCUIT DIAGRAMS
A
B
CD
E
1
4
5
6
7
8
9
11
10
12
13
14
15
16
17
18
19
21
23
24
22
2
3
20
LEGEND:
1- Heating flow temperature probe
2- Air release valve
3- Pump pressure switch
4- Ignition/detection electrode
5- Injector
6- Fan
7- Silencer
8- Condensate discharge tube
9- Gas valve
10 - Pressure gauge
11 - Safety valve
12 - Secondary heat exchanger
13 - Domestic hot water temperature probe
14 - Drain valve
15 - Domestic hot water flow switch
16 - Motorised valve
17 - Automatic By-pass
18 - Circulation pump with automatic air release valve
19 - Condensate trap inspection cap
20 - Condensate trap
21 - Heating return temperature probe
22 - Expansion vessel
23 - Main Heat exchanger
24 - Burner
27 MFFI