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4. When UV flame detection is used, a test is required to verify that UV radiation

from the ignition spark is not being detected. To accomplish this, manually shut

off both pilot and main fuels. Initiate a normal start-up, and when the PTFI

display comes on, observe the display which should read no signal more than 4.

If more than 4 is observed, realign the UV scanner, and/or shield the spark from

the scanner’s view.

5. With all methods of flame detection, check pilot flame failure response by

manually shutting off the pilot fuel and then initiate a normal start-up. With no

pilot flame present, the control will de-energize the pilot assembly at the end of

the trial for ignition interval, and the control will lockout. Also check to verify

that the ignition spark does not cause an electrical interference on infrared or

flame rod applications.

Main Flame Test

Note: This test requires an interrupted pilot (a pilot that shuts off after main flame has been

established).

1. Proceed through a normal startup. After the pilot flame is shut off, observe the

reading on the display. If the signal reading is low, readjust main flame or realign

detector.

2. Check main flame failure protection by manually shutting off the main fuel

supply. Within 4 seconds after main flame goes out, the fuel valve will be de-

energized. The alarm circuit will be energized following safety lockout.

CAUTION: The minimum pilot test must be accomplished by a trained and qualified

burner technician

Minimum Pilot Test (Pilot turn down test)

This test assures that the flame detector will not detect a pilot flame too small to reliably light off the

main flame. The test should be made on every new installation and following any repositioning or

replacement of the flame detector. This procedure should not be used on a direct spark ignited burner.

1. Turn off the main fuel supply manually.

2. At the start of PTFI, place the Check-run switch in the check position.

3. Reduce the pilot fuel supply until the display reads below 10.

4. Slowly increase the fuel to the pilot until the display reads 10. This is minimum pilot

flame that the flame detector will reliably detect.

5. Place the Check-run switch in the Run position. When the main fuel safety shut-off valve

is energized, slowly open the manual main fuel valve.

6. Observe the light-off of the main flame. It must be smooth and normal.

CAUTION: If the main flame does not ignite immediately, shut off the main fuel.

Realign the detector to require larger minimum pilot flame

7. Repeat this test until a reliable and smooth light-off occurs with the minimum pilot.

8. After this test is completed, increase the fuel to the pilot to its normal setting.

Fireye BurnerLogiX YB110 User Manual

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