Flame Simulation - Honeywell krom schroeder IFD 258 Manual

4 .3 .3 Flame simulation

The flame simulation check is conducted after applying
the start-up signal () during the waiting time t
01
t W
t LV
If flame simulation is signalled during start-up, the flame
simulation delay time t
simulation is discontinued during the flame simulation
delay time t (max. 25 s), the burner will start up. Oth-
LV
erwise, a fault lock-out occurs. The display blinks and
01
indicates .
IFD 258 · Edition 03.12l
1 . . . 88
V1
t
t
W
W
01
1
L1
3
10
11
5
13–14
8–9
t
starts to elapse. If the flame
LV
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Start-up signal, safety interlock
The start-up signal is the same as the signal in the
safety interlock.
If the start-up/safety interlock signal drops more than
four times in succession during start-up, an inadmissible
quantity of non-combusted gas can reach the combus-
tion chamber during the safety time via open gas valves.
.
Therefore, a fault lock-out is performed on the automatic
burner control unit IFD 258 following three consecutive
drops of the start-up/safety interlock signal (blinking
).
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