Wire Burner; Start Up Burner/Set Combustion; Cad Cell Resistance Measurement; Resetting From Restricted Or Hard Lockout - Beckett AF Manual

Wire Burner

Some Thermostats Are Polarity
Sensitive. Reversed polarity
could cause erratic cycling of the burner control.
Connect the wire from the R
thermostat to the TR terminal on the control. Connect
the wire from the W terminal on the thermostat to the TW
terminal on the control.
○ Make connections to the control's terminals as
shown in Figures 11a and 11b. Refer to the label
on the underside of the control for wiring details.
○ Note: Motor-off delay on a 7560P will be disabled if
the safety and operating limits as shown in Figures
11a and 11b interrupt power to the control terminal L1.
○ Connect thermostat leads to the TR and TW
terminals on the control or jumper the TR and TW
terminals on the control, as directed by the appliance
wiring diagram.
- Thermostat anticipator Current: 0.1 amp
- Thermostat voltage: 24 volts AC
Note that i
f the thermostat short cycles or operates
improperly, it may require an isolation relay for proper
operation.
Start Up Burner/Set
Combustion
Hot Gas Puff-Back and
Heavy Smoke Hazard
Failure to prime the pump properly could result in
unstable combustion, hot gas puff-back and heavy
smoke.
Do not allow oil to spray into a hot combustion
chamber while bleeding air from the pump.
Install a gauge in the nozzle discharge port tubing
or fully open the pump bleed valve to prevent oil
spray from accumulating in the combustion chamber
during the air bleed procedure.
Ensure that all bubbles and froth are purged from
the oil supply system before tightening the pump
bleed valve.
Ensure that the appliance is free of oil and oil vapor
before starting or resetting the burner.
1. Open the shutoff valves in the oil supply line to the
burner.
2. Close air band and partially open air shutter. This is
an initial air setting for the pump bleeding procedure
only. Additional adjustments must be made with
instruments.
3. Set the thermostat substantially above room temperature.
240V AFG Burner Manual
or R terminal on the
H
Section: Start-up Burner/Set Combustion
4. Close the line voltage switch to start the burner. If
the burner does not start immediately you may have
to reset the burner primary control.
5. Initiate a call for heat.
6. After the burner starts, press and hold the reset
button for 15 seconds until the yellow light turns on.
This indicates that the button has been held long
enough.
7. Release the reset button. The yellow light will turn
off and the burner will start up again.
8. At burner start up, click the reset button while the
igniter is still on. This will transition the control
to a dedicated Pump Prime mode, during which
the motor, igniter, and valve are powered for four
minutes. The yellow light will be on.
9. Bleed the pump until all froth and bubbles are
purged. If desired, terminate the call for heat or
hold the reset button for at least one second to exit
Pump Prime mode and return to Standby.
10. At the end of 4 minutes, the yellow light will turn off
and the control will automatically return to standby
mode.
11. If prime is not established during the four minute
pump prime mode, return to step 8 to re-enter
Pump Prime mode. Repeat steps 8 through 10
until the pump is fully primed and the oil is free of
bubbles.
12. Terminate the call for heat, and the control will
resume normal operation.

Cad Cell Resistance Measurement

○ If the Beckett 7560 control is equipped with the
GeniSys Display Module, part 52067U, the cad cell
resistance can be selected and read on the LCD
screen. Also, the GeniSys Contractor Tool, part
52082U, can be used for this purpose.
○ If these are not available, the cad cell leads can
be unplugged from the control and the resistance
measured with a meter in the conventional way.
Conduct these tests with fl ame present.
Flame Detection Range
Normal = 0 to 1600 ohms
Limited = 1600 ohms to lockout

Resetting From Restricted or Hard Lockout

○ If the control continues to lockout without a satisfi ed call
for heat, or fails the motor relay check, the control enters
Hard (restricted) Lockout in order to limit accumulation of
unburned oil in the combustion chamber.
WARNING! Reset by qualifi ed technician only.
○ To reset, hold the button down for 15 seconds until
the red light turns off and the yellow light turns on.
17