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PFA, BGT · Edition 03.11
26
9 Legend
88
Display
Ready for operation
Safety interlocks
Burner start-up signal
DI
Digital input
Ignition transformer
Gas valve
Air valve
P
Purge
A
External air valve control
Flame signal
1
Burner operating signal
1
1
Operating signal, pilot burner
1
2
Operating signal, main burner
Fault signal
Reset
Input signal
Output signal
Input/Output safety circuit