Beckett SF Series - Mount Burner on Appliance; Mounting Options; Do Not use Adjustable Mounting Flange on Mobile Units; Mounting Dimensions

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Section: MOUNT BURNER ON APPLIANCE
Mount Burner on Appliance
Mounting Options
Do Not use Adjustable
Mounting Flange on
Mobile Units
The shock and vibration could cause loss of
burner alignment and insertion problems resulting
in ame impingement, heavy smoke, re and
equipment damage.
y Only use specied factory-welded ange and air tube
combinations.
Bolt the burner to the appliance using the factory-
mounted ange or an adjustable ange.
Mounting Dimensions
1. When using the Beckett universal adjustable ange,
mount the air tube at a 2° downward pitch unless
otherwise specied by the appliance manufacturer.
2. Verify that the air tube installed on the burner
provides the correct insertion depth. See Figure 5.
3. The end of the air tube should normally be 1/4”
back from the inside wall of the combustion
chamber. Never allow the leading edge of the
head assembly to extend into the chamber, unless
otherwise specied by the heating appliance
manufacturer. Carefully measure the insertion depth
when using an adjustable ange. Verify the insertion
depth when using a welded ange.
Table 4 – Nozzle Flow Rate by Size
Nozzle ow rate U. S. gallons per hour of No. 2 fuel oil when
pump pressure (psig) is:
Nozzle
size (rated
at 100
psig)
125
psi
140
psi
150 psi
175
psi
200
psi
1.25 1.39 1.48 1.53 1.65 1.77
1.35 1.51 1.60 1.65 1.79 1.91
1.50 1.68 1.77 1.84 1.98 2.12
1.65 1.84 1.95 2.02 2.18 2.33
1.75 1.96 2.07 2.14 2.32 2.48
2.00 2.24 2.37 2.45 2.65 2.83
2.25 2.52 2.66 2.76 2.98 3.18
2.50 2.80 2.96 3.06 3.31 3.54
2.75 3.07 3.25 3.37 3.64 3.90
3.00 3.35 3.55 3.67 3.97 4.24
3.25 3.63 3.85 3.98 4.30 4.60
3.50 3.91 4.14 4.29 4.63 4.95
3.75 4.19 4.44 4.59 4.96 5.30
4.00 4.47 4.73 4.90 5.29 -
4.50 5.04 5.32 5.51 - -
5.00 5.59 - - - -
5.50 - - - - -
Table 5 – Nozzle Spray Angles
Recommended nozzle spray angles
“F” head 70°, 80° or 90° nozzle
Note: Always follow the appliance manufacturer’s nozzle specication,
when available.
Figure 3 – Electrode Tip Adjustment
Check/Adjust Electrodes
Check the electrode tip settings. Adjust if necessary
to comply with the dimensions shown in Figure 3. To
adjust, loosen the electrode clamp screw and slide/rotate
electrodes as necessary. Securely tighten the clamp
screw when nished.
Servicing Nozzle Line Assembly
1. Turn off power to burner before proceeding.
2. Disconnect oil connector tube from nozzle line.
3. Loosen the two screws securing igniter retaining
clips and rotate both clips to release igniter
baseplate. Then tilt igniter back on its hinge.
4. Remove splined nut.
5. “F” head air tube. - Remove nozzle line assembly
from burner, being careful not to damage the
electrodes or insulators while handling. To ease
removal of long assemblies (over 9 inches), rotate
assembly 180° from installed position after pulling
partially out of tube.
6. To replace the nozzle assembly, reverse the above
steps.
Check/Adjust ‘Z’ Dimension - ‘F’ Heads
See Figure 4 for complete details.
5/32” GAP
5/16” ABOVE
CENTER
1/16” NOZZLE-TO-TIP
SPACING