Beckett CF 2500/ 3500 Manual De Usuario
Instruction Manual
– Model CF2500/CF3500 Oil Burner
9
Form 6104 BCF-35-R0699
Figure 9a
Two-pipe oil flow, one nozzle, low fire, “
Two-pipe oil flow, one nozzle, low fire, “
H
” pump
• Install two high-quality shutoff valves in accessible loca-
tions on the oil supply line. Locate one valve close to the
tank. Locate the other valve close to the burner, upstream
of the fuel filter.
tank. Locate the other valve close to the burner, upstream
of the fuel filter.
❏ Burner fuel flow
•
One-pipe systems
– See
Figure 8
for the fuel flow paths
for high-fire and low-fire operation. Oil supply connects to
one of the fuel unit Inlet ports.
one of the fuel unit Inlet ports.
Do not
install by-pass plug in a one-pipe
system. Could cause unit seal failure, oil
leakage and potential fire and injury hazard if
ignored.
leakage and potential fire and injury hazard if
ignored.
•
Two-pipe systems
– See
Figure 9
for the fuel flow paths
for high-fire and low-fire operation. Oil supply connects to
one of the fuel unit Inlet ports. Oil return connects to the
fuel unit Return port.
one of the fuel unit Inlet ports. Oil return connects to the
fuel unit Return port.
By-pass plug
must
be installed in a two-pipe
system. Failure to comply could cause unit
seal failure, oil leakage and potential fire and
injury hazard.
seal failure, oil leakage and potential fire and
injury hazard.
•
Low-fire/high-fire operation
– The fuel unit nozzle port
pressure is factory set at 300 psig.
• At high fire, full pressure (300 psig) is applied at both
• At high fire, full pressure (300 psig) is applied at both
oil nozzles, causing full input.
• At low fire, full pressure (300 psig) is applied at one
nozzle, causing reduced input.
Figure 9b
Two-pipe oil flow, two nozzles, high fire, “
Two-pipe oil flow, two nozzles, high fire, “
H
” pump
a Return port
b Nozzle port
c Oil valves
d Nozzle & adapter
g Inlet port
k Return line to oil tank
p Air bleed valve
b Nozzle port
c Oil valves
d Nozzle & adapter
g Inlet port
k Return line to oil tank
p Air bleed valve
Legend
(for Figures 8a, 8b, 9a and 9b)
3512
d
200 psig
to
300 psig
c
c
c
k
200 psig
to
300 psig
b
g
a
p
3513
d
200 psig
to
300 psig
c
c
c
k
200 psig
to
300 psig
200 psig
to
300 psig
b
g
a
p