9
Fig. 3
1.6 MAIN COMPONENTS
KEY
1 Control panel
2 Heating system circulator
3 Gas valve
4 Flow switch
5 C.H. sensor (SM)
6 Condensate drain tap
7Fan
8 Detection electrode
9 Ignition electrode
10 Primary exchanger
11 Exhaust fumes probe
12 Air relief valve
13 Limit stat 90°C
14 Ignition transformer
15 D.H.W. combined temperature
and pressure relief valve
16 Expansion vessel
17 Safety thermostat 100°C
18 D.H.W. sensor (SB)
19 D.H.W. tank
20 D.H.W. expansion vessel
21 Tundish
22 C.H. safety valve 3 BAR
23 D.H.W. over heating thermostat 85°C
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