Beckett 7590 Gas Power Burner Control - Manual (Page 10)

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supply system using a soap and water
solution or electronic detection.
Check Safety Timings
◦ Turn off gas supply to appliance.
◦ Restore power to the appliance.
◦ Turn the thermostat or controller up
to call for heat. Status LED should be
powered. Motor should start.
◦ Following pre-purge, the control will
energize the separate igniter, spark
should be present at the burner head.
MV LED should light and gas valve
should open.
◦ Spark should stay on for the entire
ignition timing.
◦ Spark should switch off at the end of the
ignition timing. Gas valve and MV LED
should turn off.
◦ If the control is programmed for single
trial for ignition, the Status LED will flash
rapidly to indicate lockout.
◦ For controls programmed for multiple
trials for ignition, allow the control to
continue retrials until lockout occurs.
Status LED will flash slowly during
waiting period between ignition cycles.
Check for Normal Operation
◦ Restore power to the appliance.
◦ If control is in lockout push Status/Reset
button.
◦ Turn manual gas cock to on position.
◦ Turn gas valve to on position using either
the manual gas knob or the electrical
switch on the valve.
◦ Turn the thermostat or controller up to
call for heat. Status LED should be
powered. Motor should start.
◦ Following pre-purge, the igniter will be
turned on and spark should be present
at the burner head. The MV LED should
turn on and the gas valve should open.
Motor continues running.
◦ When the burner is lit by spark, ignition
The 7590D and T models can be configured
to automatically allow an ignition retry
once every 1-8 hours (selectable using the
diagnostic tool or by factory configuration).
This configuration may help by allowing
periodic ignition retries until the gas supply
is restored. The ignition retries will only
happen if there is power to the burner and
there is a call for heat from the thermostat or
controller. The control will not allow retry if
the lockout was caused by a failed gas valve
relay check. This retrial feature may not be
available (factory locked) in some controls
including the 7590C version.
If the red Status/Reset button is flashing
slowly (1 time per second) and the motor/
blower is off, the control is waiting for retrial.
When the standard control (7590D and T) is
in the waiting period, it can only be reset by
removing power from the control.
Stop/Hold Button
Holding the Status/Reset button down for
more than 1 second will interrupt the ignition
sequence. The control will enter a hold
mode and all control functions will stop.
When the Status/Reset button is released,
the control will start the ignition sequence
over (including pre-purge).
Safety Check
Before starting appliance, make sure that
all wiring is correct and secure. Repair or
replace any loose connections or damaged
wire. Use only wire rated for the application.
◦ Use UL approved wire of the gauge
and temperature rating specified by the
appliance or burner manufacturer for any
replacement wiring.
◦ Use UL approved solid conductor ignition
cable. Cable must meet the temperature
and voltage ratings specified by the
manufacturer. Use insulated boots or
terminals, if needed, to prevent sparking
to burner parts.
Perform a visual
inspection of all system
components including the gas supply
system. Check for any leaks in the gas