Technical information

IFD 244 · Edition 03.08
19 Parameters > Behaviour during start-up
Flame simulation4.3.3
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
5
9
4
L1
t
W
t
LV
7–8
ϑ
0101
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 oc-
curs. 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 three
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
244 following three consecutive drops of the start-up/safety
interlock signal (blinking [
09
]).