Burner Controls - Beckett AF Series Manual

Section: Burner Controls

Burner Controls

GeniSys Model 7505 Control
Fire or Explosion Hazard
Can cause severe injury, death, or property
damage.
y The control can malfunction if it gets wet, leading to
accumulation of oil or explosive oil vapors.
y Never install where water can flood, drip or
condense on the control.
y Never use a control that has been wet - replace it.
Explosion, Fire, Scald, and
Burn Hazard
All heating appliances must have HIGH
LIMIT protection to interrupt electrical
power and shutdown the burner if operating
or safety controls fail and cause a runaway
condition.
y Follow the appliance manufacturer's wiring diagrams
and note all required safety controls.
y Typical safety controls include high temperature or
pressure limits, low water cutoffs, pressure relief
valves and blocked flue sensing switches.
y Verify all limit and safety controls are installed
and functioning correctly, as specified by the
manufacturer, applicable safety standards, codes
and all authorities having jurisdiction.
y Ensure that the appliance is free of oil and oil vapor
before starting or resetting the burner.
Typical Burner Sequence of Operation for GeniSys
Control. Refer to the appliance manufacturer's wiring
diagram for actual specifications.
1
3
2
Valve-on delay
5
Ignition carryover
6
8
Motor-off delay
AFG Burner Manual
9
Pump
Standby
prime
4
Trial for
Lockout
ignition
7
Run Recycle
1. Standby: The burner is idle, waiting for a call for
heat.
2. Valve-On Delay: The igniter and motor are on while
the control delays turning on the oil solenoid valve
for the programmed time.
3. Trial For Ignition: The oil solenoid valve is
energized. A flame should be established within the
factory set trial for ignition time (lockout time).
4. Lockout: The control has shut down for one of the
following safety reasons:
a. The trial for ignition (lockout) time expired
without flame being established.
b. The cad cell detected flame at the end of the
Valve On Delay state.
To reset the control from lockout click the button
1-second.
NOTE: A recurrence of the above failure modes or a
failed welded relay check could cause the control to
enter a Hard Lockout state that must be reset only by a
qualified service technician.
To reset from Hard Lockout, hold the reset button for 15
seconds until the yellow light turns on.
5. Ignition Carryover: Once flame is established,
the igniter remains on for 10 additional seconds 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, 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 repeats the ignition
sequence. The control will continue to Recycle
each time the flame is lost, until it reaches a pre-set
time allotment. The control will then go into Hard
Lockout instead of recycle. This feature prevents
excessive accumulation of oil in the appliance firing
chamber.
8. Motor-Off Delay: If applicable, the oil solenoid
valve is turned off and the control delays turning the
motor 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 solenoid valve energized for 4 minutes. During
Pump Prime mode, the cad cell is disengaged,
allowing the technician to prime the pump without
having to jumper the cad cell.
15