Slant/Fin EUTECTIC EC-13A Installation And Operating Instructions Manual page 15

EUTECTIC EC-10
Check/Adjust "Z" Dimension – L1 & L2 Heads
Head Adjustment L1 & L2 Beckett Head
1. See figure above. The important "Z" dimension is the distance from the leading edge of the head to the end of the air tube. This distance for L1 and L2
heads is 35mm (1-3/8") if the tube has a straight shroud or 44mm (1-3/4") if the air tube has a conic shroud. The "Z" dimension is factory set for burners
shipped with the air tube installed. Even if factory set, verify that the "Z" dimension has not been changed.
2. Use the following procedure to adjust the "Z" dimension, if it is not correct:
• Turn off power to the burner
• Disconnect the oil connector tube from the nozzle line.
• Refer to figure. Loosen the splined nut from the nozzle line. Loosen the hex head screw securing the escutcheon plate to the burner housing.
• Place the end of a ruler at the leading edge of the head and, using a straight edge across the end of the air tube, measure the distance to the end of
the tube. A Beckett T501 gauge may also be used.
• Slide the nozzle line forward or back until this dimension is 35mm (1-3/8") for L1 & L2 heads if the tube has a straight shroud, or 44mm (1-3/4") if the
air tube has a conic shroud.
• Tighten the hex head screw to secure the escutcheon plate to the burner chassis. Then tighten the splined nut and attach the oil connector tube.
3. Recheck the "Z" dimension periodically when servicing to ensure the escutcheon plate has not been moved. You will need to reset the "Z" dimension if
you replace the air tube or nozzle line assembly.
Check/Adjust "Z" Dimension – V1 Heads
Head Adjustment V1 Beckett Head
1. See figure above. The important "Z" dimension is the distance from the leading edge of the head to the end of the air tube. This distance for V1 heads is
44mm (1-3/4"). The "Z" dimension is factory set for burners shipped with the air tube installed. Even if factory set, verify that the "Z" dimension has not
been changed.
2. Use the following procedure to adjust the "Z" dimension, if it is not correct:
• Turn off power to the burner.
• Disconnect the oil connector tube from the nozzle line.
• See figure above. Loosen the splined nut from the nozzle line. Loosen the hex head screw securing the head adjusting plate
to the burner housing.
• Loosen the acorn nut. Move the head adjusting plate until the "O" lines up with the reference indicator on the housing, and retighten the hex head
screw. Place the end of a ruler at the leading edge of the head and, using a straight edge across the end of the air tube, measure the distance to the
end of the tube. A Beckett T501 gauge may also be used.
• Slide the nozzle line forward or back until this dimension is 44mm (1-3/4") for V1 heads. Tighten the acorn nut.
• Tighten the hex head screw to secure the head adjusting plate to the burner chassis. Then tighten the splined nut and attach the oil connector tube.
3. Recheck the "Z" dimension periodically when servicing to ensure the escutcheon plate has not been moved. You will need to reset the "Z" dimension if
you replace the air tube or nozzle line assembly.
Figure 9.
Figure 10.
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