44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
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Restart following flame failure
Parameter 12 = 1,
Switch in restart position :
The precondition for a restart is that activation of the
restart allows the burner to restart as intended (in all
operating phases). It must be ensured in this case that
the program sequence started by the IFD matches the
application.
If the IFD detects a flame failure after a minimum op-
erating time of 2 s, the valves are closed and the opera-
tion signalling contact (terminals 13 and 14) is opened
within time t
SB
.
The automatic burner control unit now attempts to re-
start the burner once. If the burner does not function, a
fault lock-out occurs. The display blinks and indicates
If, on restart, the automatic burner control unit detects
a flame signal within the safety time on start-up t
SA
, the
operation signalling contact closes. The display indi-
cates the current program status
04
.
In accordance with EN 746-2, a restart may be con-
ducted only if the safety of the installation is not im-
paired. Restart is recommended for burners which oc-
casionally display unstable behaviour during operation.
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