© 2020
CONTRIVE • B1444
|FIRO.EN
10
20
3
www.contrive.it
WIRING DIAGRAM
L
EXTERNAL LIMITS
V
FUEL VALVE
01
POWER SUPPLY – PHASE
02
POWER SUPPLY – NEUTRAL
N
03
OUTPUT BURNER LOCKOU
T
04
INPUT REMOTE RESET
05
FUEL VALVE – NEUTRAL
N
06
FUEL VALVE – PHASE
V
07
IGNITION TRANSFORMER – NEUTRAL
N
08
IGNITION TRANSFORMER – PHASE
09
GROUND
GND
10
FLAME DETECTOR INPUT
ROD
FLAME DETECTED ONLY IF THE NEUTRAL IS WIRED
TO TERMINAL 2 AND CONNECTED TO GROUND
RESET
A reset action is supposed to be a clear defined manual action. An automatic reset is not allowed by EN 13611:2015.
FIRO limits the maximum number of remote resets
(input terminal 4) to 5 actions within a span of 15 minutes.
Lockout (resettable only from local button) exceeding this limit.
STATUS DISPLAY
The STATUS DISPLAY
[4]
gives, at any time, a clear indication about the working conditions of both the burner and
the equipment, making it easier to detect any failure occurring in the system or the device.
LOCKOUTS
STANDBY
WAITING FOR RESET WHEN PROGRAMMED
FOR STANDBY MODE AT
POWER-ON.
IGNITION FAILURE
NO FLAME DETECTED AT THE END OF
SAFETY TIME (IGNITION TRIAL).
FLAME SIMULATION
FLAME DETECTION DURING PREPURGE OR
POSTPURGE (AFTER POS
TCOMBUSTION).
FLAME FAILURE
FLAME QUENCHING DURING NORMAL
BURNER OPERATION.
RESET / COMMAND ERROR
TOO MANY REMOTE RESETS
(MORE THAN 5 WITH
IN 15 MIN).
CYCLE
MANUAL SHUTDOWN
UNIT
HAS BEEN PUT OUT OF
SERVICE FROM
PUSH BUTTON. PUSH AG
AIN TO RESTORE.
BURNER ON
FUEL VALVE IS OPEN, OPERATING POSITION
FOR SINGLE STAGE BUR
NERS.
PREPURGE
PURGE OF COMBUSTION CHAMBER OR MIN
TIME FOR ILLEGAL FLAME PROVING.
POSTCOMBUSTION
WAITING FOR FLAME QUENCHING AFTER
LOCKOUT OR SHUTDOWN REQUEST.
IGNITION
SAFETY TIME. BURNER
IGNITION TRIAL
WITH PILOT FUEL VALVE OPEN.
POSTPURGE
PURGE OF COMBUSTION CHAMBER, SHOWN
TOGETHER WITH ASSOCIATED CODE.
