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Oil Supply Line & Filter Connections
One−Pipe Systems
CAUTION
Do not install the bypass plug into the pump on one−
pipe systems.
The burner is shipped with a single−stage fuel pump set for
one−pipe operation. For one−pipe systems, the oil supply
pipe is connected to the inlet tap on the pump. A one−pipe
system should only be used where there is gravity oil flow to
the pump or there is no more than 8 ft. of vertical lift (or 6 in.
Hg) from the oil tank to the fuel pump.
1 − Connect the inlet pipe to the pump inlet. Start the burner.
2 − Turn the bleed valve one turn counterclockwise.
3 − Bleed the unit until all air bubbles disappear.
NOTE − Hurried bleeding will prevent the unit from op-
erating properly.
4 − If necessary, put GeniSys
t
primary control into its
4−minute pump priming mode. Refer to table 10.
5 − Tighten the bleed valve securely.
Two−Pipe Systems
(Figure 13)
If the installation requires a two−pipe operation, install the
bypass plug included in the bag which is attached to the
pump. To convert the pump, install the bypass plug accord-
ing to the provided pump instructions. Notice in the two-pipe
system the return pipe must terminate in the tank 3" (76 mm)
to 4" (102 mm) above the supply inlet. Ensure the return pipe
terminates at the correct measurement or air may escape
into the system. This could result in loss of prime.
NOTE− If using an outside tank in cold climates a number
one fuel or an oil treatment is strongly recommended. Con-
tact your oil supplier for oil treatment, if necessary.
1 − Remove 1/4" plug from return port.
2 − Insert bypass plug and tighten it.
3 − Attach the return and inlet pipes. Start the burner. Air
bleeding is automatic.
NOTE − If a faster bleed is necessary, open the bleed
valve.
4 − The return pipe must terminate 3" to 4" above the sup-
ply pipe inlet.
NOTE − If the return pipe does not terminate where it
should, air may enter the system, and prime may be
lost.
An oil filter is required for all models.
Install filter inside
the building between the tank shut-off valve and the burner.
Locate filter close to (but at least 3 feet away from) the burn-
er for easy maintenance. Table 6 lists the filters for the
SLO183B furnace.
Consult the burner manufacturer’s instructions that are in-
cluded with the unit for further details concerning oil supply
pipe connections.
Table 6
Oil Filters (All Models)
Oil Filters
Cat.
Number
10 micron filter (no mounting bracket)
81P89
10 micron filter (mounting bracket)
53P92
10 micron replacement cartridge for filter, 45 gph
53P93
Filter restriction indicator gauge
53P90
Leak Check
After oil piping is completed, carefully check all piping con-
nections (factory and field) for oil leaks.
Oil Line Heater (Optional)
A heater for the oil pipe is available for applications that are
located in cold climates. The heater warms the oil pipe to
assist the initial start−up. An oil line heater is available from
Beckett using part number 51621 (Beckett Start Helper).
Electrical Wiring
All wiring must conform to the National Electric Code
(NEC), or Canadian Electric Code (CEC) and any local
codes. Refer to figure 14 for typical unit wiring diagram.
See figures and for field wiring. Refer to figure 18 for termi-
nal designations on blower control.
1 − Refer to appliance rating plate for proper fuse size.
2 − Install room thermostat and make wire connections to
the fan control board. Avoid installing thermostat on an
outside wall or where it can be affected by radiant heat.
Set the adjustable heat anticipator on thermostat ac-
cording to the wiring diagram sticker provided on unit.
3 − Install a separate fused disconnect switch near unit so
power can be shut off for servicing.
4 − Complete line voltage wiring from disconnect switch
near unit to make-up box.
NOTE − An equipment ground screw is provided. Refer
to unit wiring diagram. Ground unit using a suitable
ground wire.
5 − Any 120V accessory rated up to 1 amp can be con-
nected to the EAC terminal on the A15 ST9103A con-
trol. The EAC terminal is energized when the blower is
in operation.
6 − A 24V dehumidistat or ComfortSense
®
7000 input
(from terminal D) can be connected to the reverse−act-
ing HUM terminal on the A54 blower control. See figure
18.
