IFD 258 · Edition 10.09
20
Parameters > Behaviour during start-up
4 .3 .3 Flame simulation
t
88
02 . . .
00
t
88
00
02 . . .
01
t
W
V1
V1
The flame simulation check is conducted after applying the
start-up signal (
J
) during the waiting time t
W
.
t
1
3
10
11
5
L1
tW
tLV
8–9
13–14
ϑ
01
01
If flame simulation is signalled during start-up, the flame simu-
lation delay time t
LV
starts to elapse. If the flame simulation
is discontinued during the flame simulation delay time t
LV
(max. 25 s), the burner will start up. Otherwise, a fault lock-out
occurs. The display blinks and indicates
01
.
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 combustion 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
09
).
