Wacker Neuson E 2200 Operator's Manual page 61

E 2200 / E 3000ES
Period
Trial-for-
ignition
Carry-over
Burner-motor-
off delay
Non-fault The burner non-fault modes are described below.
modes
wc_tx001667gb.fm
The trial-for-ignition period immediately follows the valve-on-delay
period. During this period:
The fuel shut-off valve is opened (energized).
Pressurized fuel atomizes at the burner nozzle.
The atomized fuel is vaporized and ignited by the electrodes.
The burner fires and the flame is monitored by the cad cell.
If flame is not detected:
The burner controller enters lockout mode.
Power is disconnected from the fuel shut-off valve, electrodes, and
the burner motor.
The indicator light flashes.
The ignition carry-over period starts as soon as the flame is established.
During this cycle:
The fuel shut-off valve is open (energized).
Pressurized fuel atomizes at the burner nozzle.
The atomized fuel is ignited by the electrodes.
The electrodes stay powered for up to 30 seconds after flame is
sensed.
Once the carry-over period has expired:
The ignition transformer is shut off.
The burner controller enters the run mode.
If the flame is lost:
If the lockout time has not expired, the burner controller returns to
trial-for-ignition period.
If the lockout time has expired, the burner controller enters the recy-
cle mode.
The burner-motor-off-delay period starts immediately after the setpoint
is reached, i.e., the call for heat has been satisfied. The time of this
period is set by the DIP switches (DIP switches 1 and 2 in the down
position; 3 in the up position). During this period:
The fuel shut-off valve is closed (de-energized).
The burner motor runs until the burner-motor-off delay expires, then
the burner motor turns off.
The burner controller returns to the idle mode.
Mode
Idle The burner controller will enter the idle mode if:
At power-up, the internal conditions are correct and the cad
cell senses no light.
The cad cell senses light during the safety period.
The call for heat has been satisfied.
During this mode:
The burner controller powers no outputs.
Action or Function
Functional description
61
Operation