Beckett AFII manual Section Burner Controls, Control System Features

Section: Burner Controls

Figure 9 - Typical Burner Wiring & Burner Sequence of Operation for R7184P Control.

Refer to the appliance manufacturer’s wiring diagram for actual specifications.

1.STANDBY. The burner is idle, waiting for a call for heat. When a call for heat is initiated, there is a 3- 10 second delay while the control performs a safe start check.

2.VALVE-ON DELAY. The ignition and motor are turned on for a 15 second valve-on delay.

3.TRIAL FOR IGNITION (TFI). The fuel valve is opened. A flame should be established within the 15 second lockout time.

4.LOCKOUT. If flame is not sensed by the end of the TFI, the control shuts down on safety lockout and must be manually reset. If the control locks out three times in a row, the control enters restricted lockout.

5.IGNITION CARRYOVER. Once flame is established, the ignition remains on for 10 seconds to ensure flame stability before turning off. If the control is wired for intermittent duty ignition, the ignition unit stays on the entire time the motor is running.

6.RUN. The burner runs until the call for heat is

satified. The burner is then sent to burner motor off delay, if applicable, or it is shut down and sent to standby.

Control System Features

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 above ignition sequence. If flame is lost three times in a row, the control locks out to prevent cycling with repetitious flame loss due to poor combustion.

8.BURNER MOTOR-OFF DELAY. The fuel valve is closed and the burner motor is kept on for the selected motor-off delay time before the control returns the burner to standby.

61351

Feature	Interrupted	Limited reset,	Valve-on	Burner motor off	Alarm
	ignition	Limited recycle	delay	delay	Contacts
R7184A	YES	YES	—	—	—
R7184B	YES	YES	YES	—	—
R7184P	YES	YES	YES	YES	Optional

AFII Burner Manual

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