Bard FH085D36F Manuale Utente
Manual 2100-422M
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PRIMARY OPERATIONAL GUIDE
BECKETT GENISYS 7505
Sequence of Operation
MIS-2491
BECKETT GENISYS
MODEL 7505
BURNER STATES
1. Standby: The burner is idle, waiting for a call
for heat.
2. Valve-On Delay (Prepurge): The igniter and
motor are on while the control delays turning on
the oil solenoid valve for the programmed time.
the oil solenoid valve for the programmed time.
3. Trial for Ignition: The fuel valve is opened. A
flame should be established within the factory
set trial for ignition time (“lockout time”).
set trial for ignition time (“lockout time”).
4. Lockout: The control has shut the burner down
for one of the following safety reasons:
•
The trial for ignition (lockout) time expires
without flame being established.
without flame being established.
•
The cad cell detects flame during Valve-On
Delay.
Delay.
•
The Recycle mode 30-second time budget
expires (see “Recycle” section for complete
explanation of recycle time budget).
expires (see “Recycle” section for complete
explanation of recycle time budget).
If the control locks out three times without
completing a successful call for heat, the control
enters Restricted (Hard) Lockout, and must be reset
by a technician. Hold the reset button for 15
seconds until the red light shuts off to reset from
Restricted Lockout.
completing a successful call for heat, the control
enters Restricted (Hard) Lockout, and must be reset
by a technician. Hold the reset button for 15
seconds until the red light shuts off to reset from
Restricted Lockout.
5. Ignition Carryover: Once flame is established,
the igniter remains on for 10 additional seconds
to ensure flame stability.
to ensure flame stability.
6. Run: The flame is sustained until the call for
heat is satisfied. The burner is then sent to
Motor-Off Delay (Postpurge), if applicable, or it
is shut down and sent to Standby.
Motor-Off Delay (Postpurge), if applicable, or it
is shut down and sent to Standby.
7. Recycle: If the flame is lost while the burner is
firing, the control shuts down the burner, enters
a 60-second recycle delay and then repeats the
ignition sequence. The control will continue to
Recycle each time the flame is lost until the
accumulated oil-flow-without-flame time
reaches 30 seconds, at which point the control
will go into lockout. This feature prevents
excessive accumulation of oil in the appliance
firing chamber.
a 60-second recycle delay and then repeats the
ignition sequence. The control will continue to
Recycle each time the flame is lost until the
accumulated oil-flow-without-flame time
reaches 30 seconds, at which point the control
will go into lockout. This feature prevents
excessive accumulation of oil in the appliance
firing chamber.
8. Motor-Off Delay: If applicable, the fuel valve is
closed and the control delays turning the motor
off for the set motor-off delay time before the
control returns to standby.
off for the set motor-off delay time before the
control returns to standby.
9. Pump Prime: The igniter and motor are on with
the oil valve open for up to 4 minutes. During
Pump Prime mode, the cad cell is disregarded,
allowing the technician to prime the pump
without having to jumper the cad cell.
Pump Prime mode, the cad cell is disregarded,
allowing the technician to prime the pump
without having to jumper the cad cell.
RESET BUTTON OPERATION
•
Table A explains what action the control
will take when the reset button is pressed for
different lengths of time during the various
burner operating states.
will take when the reset button is pressed for
different lengths of time during the various
burner operating states.