Beckett AFG - Manual (Page 11)

11 AFG Burner Manual
V1 Adjusting Plate
Setting
AFG with V1 Head
Burner Firing Rates
0 0.75-1.00
1 1.00-1.50
2 1.50-1.75
3 1.75-2.00
4 2.00-2.25
5 2.25-2.50
6 2.50-2.75
Table for initial adjusting plate settings for V1 Head
Set head position adjusting plate (V1 head only)
After setting “Z” dimension, loosen head adjusting plate hex
head screw and nozzle line splined nut. Move the nozzle line
assembly until the burner reference indicator lines up with
the head adjusting plate setting number given in Table shown
below.
Tighten the hex head screw and splined nut. (DO NOT loosen
the acorn nut when setting head position.) Refer to the
manufacturer’s instructions for OEM settings.
The position of the head affects air fl ow volume and pattern.
For most applications, the burner will perform satisfactorily
with the air adjustment plate setting of Table shown below.
If combustion results indicate the need for change, adjust the
head position adjusting plate forward or back one position at a
time to optimize combustion.
1.
2.
3.
4.
Section: Mount Burner on Appliance
Figure 6. Check/Adjust ‘Z’ Dimension - V1 Heads
V1 heads (see Table below and Figure above for dimensions)
See fi gure 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 1-¾”. 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. 1.
Use the following procedure to adjust the “Z” dimension, if it
is not correct: 2.
Turn off power to the burner.
Disconnect the oil connector tube from the nozzle line.
See fi gure 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 “0” 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 1-¾” 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. ○
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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. 3.
Figure 5. Check/Adjust ‘Z’ Dimension - L1 & L2 Heads
L1/L2 heads (see Table 7 and Figure 3 for dimensions)
See fi gure 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 & L2 heads is 1-3/8” if the tube
has a straight shroud or 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. 1.
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 fi gure. 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 1-3/8” for L1 & L2 heads if the tube has a straight
shroud, or 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.
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.
2.
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3.