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FLAME REQUIRED.
FAILURE TO IGNITE OPTIONS:
• LOCKOUT
• COUNT RECYCLES, THEN LOCKOUT
• COUNT RECYCLES, THEN DELAY MM:SS
• RECYCLE (NO LIMIT)
STANDBY
=
CLEAR THE FAILURE-TO-IGNITE
RETRY COUNTER
FLAME REQUIRED.
FAILURE TO IGNITE OPTIONS:
• LOCKOUT
• COUNT RECYCLES, THEN LOCKOUT
• COUNT RECYCLES, THEN DELAY MM:SS
• RECYCLE (NO LIMIT)
STANDBY
=
CLEAR THE FAILURE-TO-IGNITE
RETRY COUNTER
Parameter
Igniter on during
Pilot type
Preignition time
Pilot flame establishing period
(PFEP)
IGNITER
PFEP
PREPURGE
4
1 ,
, 0
RECYCLE DUE TO
FAILURE TO IGNITE
Fig. 24. Intermittent pilot.
IGNITER
DBI
PREPURGE
F
X I
E
D
RECYCLE DUE TO
FAILURE TO IGNITE
Fig. 25. Direct burner ignition
Table 31. Burner Control Safety Parameters. (Continued)
Pilot Flame Establishing Period or First half of PFEP
This parameter is not needed and ignored if DBI (Direct Burner Ignition) is selected.
Otherwise the igniter may be on throughout the PFEP, or only during the first half of it:
• 2 seconds for a 4 second PFEP time,
• 5 seconds for a 10 second PFEP time,
• 7 seconds for a 15 second PFEP time.
When the igniter is external, it is on continuously during the defined period. However when
the igniter is selected as the internal spark generator then, during its on time as defined by
this parameter, it actually is intermittently on, then off, then on, then off, with each state
lasting 1/4 second. (This is done because flame cannot be sensed while the igniter is on, due
to hardware limitations, so flame sense and igniter spark are done alternatetly at a 1/4
second rate.)
Interrupted, Intermittent, DBI, Direct Burner Ignition Pulsed
hr:mm:ss
4, 10, or 15 seconds
This parameter is ignored if DBI is selected. Otherwise there are three choices for the
duration of PFEP: 4, 10, or 15 seconds.
Flame must be on at the end of this period or a response occurs (see "Ignite failure response"
on page 60).
IGNITER MAY BE ON THROUGHOUT PFEP, OR ONLY DURING FIRST HALF.
PILOT
RUN STABILIZATION
(MAY BE ZERO)
O
R
1
S 5
FLAME REQUIRED: LOCKOUT OR RECYCLE
RECYCLE DUE TO FLAME
FAILURE IN RUN
MAIN
RUN STABILIZATION
(MAY BE ZERO)
T A
S 4
FLAME REQUIRED: LOCKOUT OR RECYCLE
RECYCLE DUE TO FLAME
FAILURE IN RUN
Comment
59
MAIN
R
U
N
POSTPURGE
R
U
N
POSTPURGE
CB FALCON
750-265
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Troubleshooting
