Pitco PPG14D Installation, Operation And Maintenance Manual page 21

e. Remove the pilot flame adjusting screw cover. (Figure 1-2)
f. Turn the flame adjusting screw clockwise to lower the flame and thermopile output. Turn the
screw counterclockwise to increase flame size and thermopile output.
g. Rotate the screw in the appropriate direction to achieve a reading of 400 ±50 millivolts for
the thermopile and 30 to 40 millivolts on the thermocouple.
Allow 3 to 5 minutes between flame adjustments to allow the reading
to settle.
h. Replace the pilot flame adjusting screw cover.
A
Figure 1-1 Pilot Burner Assembly Flame Adjustment
Figure 1-2 Unitrol Gas Valve
NOTICE
1-11
B