1.4
Structure
30
29
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Heat exchanger bleed point
1
Heat exchanger
2
Combustion chamber door
3
Oversleeve
4
Flame viewing window
5
Ignition/detection electrode
6
Air-gas mixer
7
Heat safety thermostat
8
Return sensor (SR)
9
Fan
10
Delivery sensor
11
Gas valve
12
72
28
27
26
25
32
18
31
Diverter valve
13
Condensate siphon
14
Control panel
15
Domestic hot water expansion vessel
16
System relief valve
17
Boiler drain
18
System pump
19
Water pressure transducer
20
Automatic bleed valve
21
Hot water tank sensor
22
Expansion vessel
23
Tank relief valve
24
24
23
22
17
16
34
33
Tank
25
Air inlet pipe
26
Air-smoke chamber
27
Smoke flue gas probe
28
Air inlet
29
Smoke outlet
30
Boiler/heating circuit filling valve
31
Domestic hot water recirculation
32
attachment
Magnesium anode
33
Hot water tank drain valve
34
EN
20
21
19
18
Fig. 3