6
4.1 STRUCTURE
1
Filling tap
2
Condensate Trap
3
Backflow preventer valve
4 Drain valve
5
Low Water Cutoff
6 Gas valve
7
Injector
8
DHW sensor
9
Water Temperature High Limit
10
Supply sensor
11 Return sensor
12
Primary Heat exchanger
13
Flame sensor
14 Manual air vent hose
15
Manual upper air vent valve
16
Flue temperature sensor
17
Positive air pressure tube
18
Flue outlet
19 Air intake
20
Negative air pressure tube
21
Air pressure switch
22
Thermal fuse
23 Ignition transformer
24
Expansion tank
25 Burner
26 Ignition electrode
27 Water discharge hose
28
Clapet
29
Fan
30 Mixer
31 Lower air vent valve
32
Pump
33
Flow sensor
34
Three way valve
35
DHW heat exchanger
