© 2000 CONTRIVE • B1401.EN 0211 13 www.contrive.it
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,
OR FIELDBUS COMMAND.
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 FIELDBUS
COMMAND OR LOCAL PUSH BUTTON TURNS
OFF THE BURNER, WAITING FOR ALLOWED
POSTCOMBUSTION AND POSTPURGE TIME.
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
AUTOMATIC 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.
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