Forney Corporation
UNIFLAME User’s Manual
Publication 372000-48 Rev H
UV Gain
The display is divided into two halves. The left side displays the selected UV Gain (uG31). The right side
displays the Signal Strength attributed to the UV sensor.
For example a reading of uG26/600, would indicate an UV gain of 26 with a corresponding Signal
Strength of 600. The UV sensor Gain is selectable from 1 (lowest) to 31 (highest), while the Signal
Strength number can range from 0 to 999.
Pressing the UP or DOWN keys changes the gain displayed and immediately stores the value (pressing
the PROGRAM key is not required). The user will immediately see the effect on the Signal Strength.
Each increment of the gain will increase the Signal Strength number for the UV sensor by 50% (e.g.
changing UV sensor gain from 26 to 27 would increase the UV Signal Strength from 600 to 900).
Each decrement of gain will decrease the Signal Strength number for the UV sensor by 33% (e.g.
changing UV sensor gain from 27 to 26 would decrease the Signal Strength from 900 to 600.
UV Range
There are two selectable internal “ranges” for the UV sensor Gain, “High” and “Low”. If a flashing UV
number is observed when “Aiming” the detector, then the signal is over range and the UV Range should
be set to “Low”. If, when “Aiming” the detector, an UV number of less than 10 is observed, then the UV
Range should be set to “High”.
ON Threshold
This refers to the “pull in” threshold of the internal flame relay, in terms of “Flame Quality”. The ON
Threshold can be set from 5 to 100. The ON Threshold must be at least 5 units higher than the OFF
Threshold.
When the Flame Quality is equal to or greater than the ON Threshold (for a time equal to the “On Time
Delay” setting, see OTD below), the flame relay will energize.
OFF Threshold
This refers to the “drop-out” threshold of the internal flame relay, in terms of “Flame Quality”. The OFF
Threshold can be set from 0 to 95. The OFF Threshold must be at least 5 units lower than the ON
Threshold.
When the Flame Quality is equal to or less than the OFF Threshold (for a time equal to the “Flame Fail
Response Time” setting, see FFRT below), the flame relay will de-energize.
FFRT -
Flame Fail Response Time
When the Flame Quality drops to or below the flame relay OFF Threshold, the flame relay will de-
energize after the selected value, ranging from 1 to 6 seconds. The maximum allowable FFRT setting is
determined by local safety code, and is factory set at 1 second.
OTD
When the Flame Quality rises to or above the flame relay ON Threshold, the flame relay will energize
after the selected value, ranging from 1 to 6 seconds.
--EXIT—
Pressing the SELECT key will return the user to the EDIT point in the STATUS LOOP.
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