Simplicity 14E Spécifications télécharger pdf (Page 11)

FIGURE 10.

ALIGNMENT AND ADJUSTMENT

The following procedures are recommended to ensure optimum flame detection and discrimination.

Flame discrimination is the ability to see only one burner or one pilot with other burners or pilots

operating nearby. These procedures should be used whenever parts are replaced, when the scanner

has been moved, when the flame shape is altered (additional fuels, new burners, burner/register mod-

ifications) as well as on all new installations.

Pilot Flame Scanner

1. Apply power to scanner.

2. Start pilot.

3. Adjust scanner sighting to detect pilot flame in the manner shown in Figure 4.

4. When flame is properly sighted, the flame signal relay should energize and the internal LED

should be indicating Flame Signal (see table 3).

5. Make sure that the scanner does not respond to the ignition spark. This is accomplished by cut-

ting off the fuel to the pilot and attempting to start the pilot using the spark igniter. If the system

responds to the spark, the sighting should be realigned.

Main Flame Scanner

1. Apply power to scanner.

2. Start pilot.

3. Adjust scanner sighting so that ignition spark and pilot flame are not detected. Test should be

conducted with maximum pilot flame and with both minimum and maximum airflow.

4. Start main burner.

5. Adjust scanner sighting to detect main burner flame. When sighting is correct (see above), the

flame relay should energize and the internal LED should be indicating Flame Signal (see table

3).

LED LOCATION

VIEWING LENS

CAUTION: Ensure scanner does not respond to the ignition spark.

CAUTION: Minimum pilot is the minimum flame required to satisfactorily ignite the main

burner. Be sure to test for reliable signals under maximum airflow conditions when the

pilot may not be detected outside the line of sight. If this occurs, resighting is required.

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Simplicity 14E Spécifications Page 11