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 
5
 
Replacement   possibilities
 
The  new  automatic  burner  control  unit  IFD  258  is  inter- 
changeable with the IFS 258 and provides almost all of the 
previous functions of the IFS 258.
 
The housing dimensions and hole pattern are un- changed.
 
The new upper section of the housing will fit on the existing 
lower section (for further information see op- erating 
instructions “Automatic burner control unit for continuous 
operation IFD  258”).
 
 
 
D-49018 Osnabrück, Germany
 
 
 
D-49018 Osnabrück, Germany 
 
 
 
 
 
 
 
 
  Signalling contact for fault and operating signals  Signalling contact for fault and operating signals   
Flame signal called up via test jacks in upper section of housing using 
external measuring instrument 
The flame signal can be called up on the 2-digit 7-segment display. 
 
  Complies with requirements in accordance with EN 1993   Complies with requirements in accordance with EN 2003           
Fault signal with no mains voltage supplied   Fault signal with mains voltage supplied 
 
  Flame simulation indicated by yellow LED 
Flame simulation indicated on 7-segment display = 
01
 
Operation indicated by yellow and green LEDs 
Operation indicated on 7-segment display = 
04
 
 
    Mains voltage = 100, 115, 200, 230 V   Mains voltage = 100, 120, 200, 230 V   
No protection against frequent remote resets   
Protection against frequent remote resets (blinking  
10 
) 
 
  No protection against frequent switch-off during t
SA 
Protection against frequent switch-off during t
SA 
(blinking   
09 
)