KEY RK-2006LSPz, Operation Manual

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5.4. Fuel ignition, extinction (shut down) and cleaning combustion chamber.
Flame detector - flame detection may follow with two methods: burner temperature
measurement or brightness measurement. In case when temperature sensor is
used, depending on its location, temperature measurement range may be from
several degrees to several hundred degrees. If measured temperatures do not
exceed 100°C it is recommended to use CT-1 or CT-2 sensor. In case of higher
temperatures, PT-1000 sensor shall be used. For flame brightness measurement,
FD-1 optical detector shall be used.
F L A M E
D E T E C T O R F D – 1
Indication correction of flame optical detector - only when flame optical detector
(FD-1) is on. Describes light intensity detected by optical detector when burner is off.
The correction value is deducted from the value light intensity during the flame
detection. Correction allows calibration of FD-1 sensor the way that during burner
shut down value (no flame) of the light equals zero.
F D – 1
C O R R E C T I O N 0
Hysteresis loss of flame - depending on the type of flame detector, this parameter
specifies how many degrees or units in relation to the threshold set by the user must
cut off the lighter or the brightness of the flame temperature to the controller began
to flame failure detection procedure.
F L A M E V A N I S H
H Y S T E R E S I S 1 0
WARNING! If the hysteresis is larger than the threshold of igniter shut down, flame
failure detection procedure is started when the temperature drops or the brightness
of the flame to the value of „0”.
Flame failure detection delay - this parameter specifies how long after the launch
procedures for the detection of flame failure or brightness temperature must remain
below the hysteresis for the regulator to decide that the furnace was extinguished.
F L A M E V A N I S H
D E L A Y 6 0 s
Fuel ignition time - after igniter and fan are switched on, the controller tests
temperature increase or brightness in the selected location of the burner. If flame is
not detected within the time programmed in this parameter, the controller will repeat
ignition cycle.