48
17 - OIL BURNER, NOZZLE, & AIR SETTINGS
Figure 39
-
Beckett NX Electrode Tip Adjustments
for Three Pass Boilers
Figure 40
-
Beckett AFG Electrode Tip Adjustments
for
Three Pass Boilers
Figure 41 - Beckett AFG Check/Adjustment "Z"
Dimensions L1 & L2 Heads
Figure 42 Beckett AFG Check/Adjustment "Z"
Dimensions - V1 Heads
AFG Burner with L1/L2 Heads
See Figures 40 and 41. The important “Z” dimension is
distance from leading edge of head to end of air tube. This
distance for L1 & L2 heads is 1-3/8” if the tube has a straight
shroud or 1-3/4” if air tube has conic shroud. “Z” dimension
is fac-tory set for burners shipped with air tube installed.
Even if factory set, verify “Z” dimension has not been
changed.
1.
Use following procedure to adjust “Z” dimension, if it is
not correct:
•
Turn off power to burner.
• Disconnect oil connector tube from nozzle line.
•
Refer to figure above. Loosen splined nut from nozzle
line. Loosen hex head screw securing escutcheon plate
to burner housing.
• Place end of ruler at leading edge of head and, using
straight edge across end of airtube, measure distance to
end of tube. A Beckett T501 gauge may also be used.
• Slide nozzle line forward or back until this dimension is
1-3/8” for L1 & L2 heads if tube has straight shroud, or
1-3/4” if air tube has conic shroud.
• Tighten hex head screw to secure escutcheon plate to
burner chassis. Then tighten splined nut and attach oil
connector tube.
2.
Recheck “Z” dimension periodically when servicing to
ensure escutcheon plate has not been moved. Reset
“Z” dimension if you replace air tube or nozzle line
assembly.
AFG Burner with V1 Heads
See Figures 40 and 42. The important “Z” dimension is
distance from leading edge of head to end of air tube. This
distance for V1 heads is 1-¾”. “Z” dimension is factory set for
burners shipped with air tube installed. Even if factory set,
verify “Z” dimension has not been changed.
1.
Use following procedure to adjust “Z” dimension, if it is
not correct:
•
Turn off power to burner.
• Disconnect oil connector tube from nozzle line. Refer
to figure above. Loosen splined nut from nozzle line.
Loosen hex head screw securing escutcheon plate to
burner housing.
•
Loosen acorn nut. Move head adjusting plate until “0”
lines up with reference indicator on housing, and tighten
hex head screw. Place end of ruler at leading edge of
head and, using straight edge across end of air tube,
measure distance to end of tube. A Beckett T501 gauge
may also be used.
• Slide the nozzle line forward or back until this dimension
is 1-¾” for V1 heads. Tighten acorn nut.
• Tighten hex head screw to secure head adjusting plate
to burner chassis. Then tighten splined nut and attach
oil connector tube.
2.
Recheck “Z” dimension periodically when servicing to
ensure escutcheon plate has not been moved. Reset
“Z” dimension if you replace air tube or nozzle line
assembly.
For detailed setup and adjustment instructions for
Beckett NX Oil Burner, refer to Beckett NX Oil Burner
Manual
provided with boiler.
PN 240013415 REV A [08/15/2021]
