11
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DESCRIPTION OF OPERATION
Fireye control D30 with programmer 71D81 (15 second purge), 71D80 (30 second purge), 71D90
(90 second purge) and with amplifier 72D1R1 (Infrared), 72DUV1 (UV), 72DUVS4 and 72DUVSIT
(UV-Self-checking), 72DRT1 (Rectification), provides the following burner operation.
Note: For direct spark ignited oil burners, substitute the words “main oil valve” for “pilot valve.”
Start Up
1.
With power applied, the limit-operating control circuit closed and the main fuel valve interlock
closed, the burner/blower motor (Terminal M) is energized.
2.
The running interlock circuit closes (air flow, fuel pressure, etc.) and the
Air Flow
indicator
(LED) lights.
3.
Programmer 71D81 provides a 15 second purge, 71D80 a 30 second purge, 71D90 a 90 second
purge.
4.
When the purge is completed, and low fire start position proven, the Ignition is energized (Ter-
minals X, 5, 6) and the TFI Indicator (LED) lights.
5.
When flame is detected, the Fireye Indicator lights.
6.
Five seconds after being energized, Terminal X is deenergized and shuts off the spark ignition. A
5 second pilot stabilization period follows.
7.
Following a 10 second trial-for-ignition (if the flame is detected) the main fuel valve (Terminal
7) is energized and the TFI indicator (LED) goes out.
8.
Ten seconds later, Terminal 5 de-energizes the interrupted pilot gas valve.
9.
Terminal 6 (intermittent pilot), remains energized for the duration of the firing period.
10.
End of start up program.
Normal Shutdown
1.
When the operating control opens its circuit, the main fuel valve and the intermittent pilot (if
used) is deenergized.
2.
Following a 15 second post-purge, the burner/blower motor is deenergized.
3.
All indicators go out.
Note: If the main fuel valve interlock is not closed at the start, the control will not initiate a start up.
If it opens during the prepurge and stays open, the programming will stop and the burner/blower
motor will be de-energized in 15 seconds. If the running interlock circuit does not close at the start,
the programming sequence will not be initiated and the burner/blower motor will continue to be
energized. If it opens during the purge, the purge timing will reset. If it opens during a firing cycle,
all fuel will shut off immediately and the programming cycle will reset. If the low fire start switch is
not closed before ignition, the programming sequence will pause until it closes.
Summary of Contents for D30 Series
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