Honeywell Krom Schroder BCU 580 Technical Information page 24

Function
08 Main burner operation signalling contact closes,
minimum operating time t
In the event of flame failure:
restart or fault lock-out
A8 External actuation of the air valve for capacity control
Controlled shut-down via ϑ signals for pilot and main burners
08
00 If min. operating time t
operation signalling contact opens,
running time (P42) starts to elapse
BCU 580 · Edition 11.15l
starts (P61)
B
▼
▼
▼
has elapsed:
B
gas valves close and
24