BCU 440 · Edition 01.17 6
Application
1.1 Examples of application
1.1.1 Atmospheric burners
Control: ON/OFF
The burner is ignited by the spark electrode and is mon-
itored by the flame rod. In the event of a flame failure
during start-up, an immediate fault lock-out occurs. In
the event of a flame failure during operation, an imme-
diate fault lock-out or a restart occurs, depending on
the unit parameter settings.
BCU 440
L1, N, PE
1
µC
ZAI
12
18
19
3
9
VAS
PLC