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0211
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Q512 – FLAME LOSS
Determines the behavior at flame loss during normal burner operation.
For burners with occasionally unstable flame signal a single recycle (including
prepurge) or direct respark can be attempted. The setting is to be determined on
the basis of burner capacity and relevant application standard.
Q602 – POSTPURGE TIME
Follow EN 676 requirements to set correct postpurge time in forced draught
burners. Any air valve and/or butterfly valve controlled by external process must
be kept open during the whole postpurge time.
During this time an illegal flame test is carried out.
Q801 – BURNER TYPE
Selecting OIL type burner the ignition device will be activated also during the
prepurge to allow the detection of oil leakage that will be ignited, leading to an
illegal flame detection. Application and settings must be made in accordance to
EN 230 (or other relevant standard) requirements.
A
SELF TEST
IS PERFORMED IN LESS THAN 1”,
ONCE SUCCESSFULLY COMPLETED THE BURNER
IS READY TO START.
IF THE UNIT HAS BEEN TURNED OFF WHILE IN
LOCKOUT
OR PARAMETER Q101 HAS BEEN SET
TO
STANDBY
, IT WILL BE NECESSARY TO RESET
THE UNIT BY MEANS OF LOCAL PUSH BUTTON.
A
FLAME SIMULATION
CHECK IS CONDUCTED
DURING WAITING OR PREPURGE TIME.
AFTER THE PRESET
WAITING OR PREPURGE
TIME HAS ELAPSED, THE IGNITION DEVICE IS
ACTIVATED AND VERIFIED, THEN THE PILOT
VALVE IS OPEN.
PILOT PROVING PERIOD STARTS IF THE FLAME
IS DETECTED WITHIN THE
SAFETY TIME
.
IF NO FLAME IS DETECTED DURING THE SAFETY
TIME A FAULT LOCKOUT OCCURS.
FLAME FAILURES
DURING OPERATION LEADS
TO LOCKOUT RESTART OR RECYCLE DEPENDING
ON Q512 PARAMETER SETTING.
A
SHUTDOWN REQUEST
FROM THERMOSTAT
OR LOCAL PUSH BUTTON TURNS OFF THE
BURNER, WAITING FOR ALLOWED POST-
COMBUSTION AND POSTPURGE
AN
AUTOMATIC SHUTOFF
OF THE BURNER CAN
BE ACTIVATED, AFTER A PRESET TIME OF
BURNER RUNNING. THE BURNER CAN WAIT
FOR A MANUAL RESET OR RESTART IN AUTO-
MATIC MODE.
A SELF TEST IS MADE AT EVERY RESTART. THIS
PARAMETER MAY BE SET IN THIS WAY ONLY IF
THE BURNER CAN RESTART AS INTENDED IN ALL
OPERATING PHASES.
PROGRAM SEQUENCE
