Beckett AFII User Manual

Page 13

AFII Burner Manual

RECYCLE. If the fl ame is lost while the burner is
fi ring, the control shuts down the burner, enters
a 60 second recycle delay, and then repeats the
above ignition sequence. If fl ame is lost three
times in a row, the control locks out to prevent
cycling with repetitious fl ame loss due to poor
combustion.
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.

Figure 9 - Typical Burner Wiring & Burner Sequence of Operation for R7184P Control.
Refer to the appliance manufacturer’s wiring diagram for actual specifi cations.

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.
VALVE-ON DELAY. The ignition and motor are
turned on for a 15 second valve-on delay.
TRIAL FOR IGNITION (TFI). The fuel valve is
opened. A fl ame should be established within the
15 second lockout time.
LOCKOUT. If fl ame 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.
IGNITION CARRYOVER. Once fl ame is
established, the ignition remains on for 10 seconds
to ensure fl ame 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.
RUN. The burner runs until the call for heat is
satifi ed. The burner is then sent to burner motor off
delay, if applicable, or it is shut down and sent to
standby.

Feature

Interrupted

ignition

Limited reset,

Limited recycle

Valve-on

delay

Burner motor off

delay

Alarm

Contacts

R7184A

YES

—

R7184B

YES

—

R7184P

YES

Optional

Control System Features

Section: Burner Controls

61351