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air/gas
diaphragm
Figure 0
Legend:
1
Boiler drain point
Manometer (water pressure gauge)
siphon (condensate)
central heating ntc sensor
5
105°c overheat thermostat
Gas valve
heat exchanger
8
Flame detector electrode (ionisation probe)
9
Main burner
10
Ignition electrode
11
air/gas mixture header
1
Mixer with venturi
1
Injector
1
Fan
15
Flue thermostat
1
Flue spigot
1
automatic air vent
18
hydraulic pressure sensor
19
pressure gas switch
InstructIons pErtaInInG to thE
22. boiler scHematic
InstaLLEr
91.550.1 - GB/IE
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