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Figure 4: Profile plate
WARNING!
Shut off power supply before making any adjustment.
If differential pressure obtained is
under
the desired value:
Reduce
the opening of the profile plate by moving the adjustment plates closer to the burner.
If differential pressure obtained is
over
the desired value:
Increase
the opening of the profile plate by moving the adjustment plates away from the burner.
NOTE:
For a single volume system, both adjustment plates should be equidistant from the burner.
Then, read the differential pressure again and repeat the operation if necessary.
NOTE:
These adjustments may change the airflow rate of the ventilation system.
Check the airflow rate to ensure that the proper amount of air is obtained. (Air balancing test)
Adjustment plates of the profile plate must not be used to adjust the final system airflow rate. When
the airflow rate must be modified, another set of pulleys may be required.
5.7.
Pilot adjustment
The pilot is factory-set.
When adjusting the pilot gas pressure with the regulator, the main burner should not be in operation
(close the main burner gas supply hand valve).
Adjust the pilot regulator to obtain a good reading of the flame signal (5 to 10VDC).