Dh k j, Ab c, Bd c – Beckett CF 2500/ 3500 User Manual
Page 7
Instruction Manual
– Model CF2500/CF3500 Oil Burner
7
Form 6104 BCF-35-R0699
Z
3506
a
Measure dimension
from
front (flat) face of head to
end of air tube, as shown.
Z
b
d
c
Figure 5 – Nozzle line assembly in burner
❏
❏
❏
❏
❏ Set dimension Z
• Replace the rear access door on the
burner, making sure that the adjusting
plate assembly is now securely held in
place.
• Loosen acorn nut
d
in
Figure 5
. Slide
the nozzle line and plate assembly un-
til dimension
Z
in
Figure 5
is:
CF2500A/CF2500
1³⁄₄" ± ¹⁄₁₆"
CF3500A (tube KM)
2⁵⁄₈" ± ¹⁄₁₆"
CF3500A (tube KR)
3⁹⁄₁₆" ± ¹⁄₁₆"
• When dimension
Z
(from end of air tube
to flat area of front face of head) is cor-
Figure 6 – Adjusting plate assy.
Legend (Figures 5 and 6)
a Adjusting plate assembly
b Spline nut for securing nozzle line
c Bottom acorn nut
d Top acorn nut (for setting dim. Z
only)
e Indicator adjusting plate
f
Secondary adjusting plate
g Primary adjusting plate
rectly set, tighten acorn nut
d
. Verify
that the adjusting plate assembly is
properly seated at the rear access
door, as shown in
Figure 5
.
• Attach the oil line from the oil valve
to the nozzle line end. Tighten se-
curely.
• Before proceeding, check dimen-
sion
Z
once again. Loosen acorn nut
d
if necessary to reposition the
nozzle line. Once dimension
Z
is set,
do not loosen acorn nut
d
again.
For the setting of acorn nut
c
, refer
to page 12.
❏ Insert burner
• Position the burner in the front of
the appliance and loosely tighten
the nuts on the mounting studs. The
burner should be pitched downward
2° as shown in
Figures 3
and
7
.
• See
Figure 7
. Install the pedestal
support kit (recommended) by at-
taching the
³⁄₄" npt flange (item
a
)
to the bottom of the burner using
the (
4
) #10 screws provided. Cut and
thread (one end only) a
³⁄₄" pipe
nipple (item
b
) with length 14.5
inches less than dimension
D
in
Fig-
ure 7
. Thread the pipe into the
flange. Then slip the pipe end into
the floor flange (item
c
).
• Secure the burner to the appliance
by tightening the nuts on the burner
flange mounting studs. Then secure
the pedestal support floor flange set
screw to the pipe.
Figure 7 – Burner installed in appliance front
Legend
H Housing total length —
20
"
J Center to bottom of housing —
14
¹⁄₂
"
K Overall housing height —
22
³⁄₄
"
Measure dimension Z from the flat
surface between (not on) the raised fins.
3507
3508
e
g
d
f
c
3509
D
H
K
J
a
b
c
1¾"