44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170. 
website: https://www.add-furnace.com/ โทร: 02-888-3472 
Line ID: @add11 e-mail: add028883472@gmail.com 
   
 
4
 .
3
 .
3
 
F
l
am
e
 
s
im
ul
a
t
io
n
 
 
 
The flame simulation check is conducted after applying 
the start-up signal (
) during the waiting time t
W
.
 
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
 
). 
 
 
 
 
 
 
If flame simulation is signalled during start-up, the flame 
simulation 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. Oth- 
erwise, a fault lock-out occurs. The display blinks and
 
indicates  .
 
1      
L1
 
3 
 
10
 
11
 
5
 
13–14
 
8–9 
t
W