Fuel Supply

Section: Fuel Supply

A. Connect Fuel Lines

For oil supply system speciﬁcations for tanks not mounted on machines, carefully follow the pump manufacturer’s literature and the latest edition of the National Fire Protection Association (NFPA) 31 standard.

Do Not Install Bypass Plug with 1-Pipe System

Failure to comply could cause Immediate pump seal failure, pressurized oil leakage and the potential for a ﬁre and injury hazard.

yThe burner is shipped without the bypass plug installed.

yInstall the bypass plug in two-pipe oil supply systems ONLY.

Oil Supply Pressure

Control Required

Damage to the ﬁlter or pump seals could cause oil leakage and a ﬁre hazard.

yThe oil supply inlet pressure to the burner cannot exceed 3 psig.

yInsure that a pressure limiting device is installed in accordance with the latest edition of NFPA 31.

yDo NOT install valves in the return line. (NFPA 31, Chapter 8.)

yGravity Feed Systems: Always install an anti-siphon valve in the oil supply line or a solenoid valve (RWB Part # 22246U) in the pump/nozzle discharge tubing to provide backup oil ﬂow cut-off protection.

Do Not Use Teﬂon Tape

Damage to the pump could cause impaired burner operation, oil leakage and appliance soot-up.

yNever use Teﬂon tape on fuel oil ﬁttings.

yTape fragments can lodge in fuel line components and fuel unit, damaging the equipment and preventing proper operation.

yUse oil-resistant pipe sealant compounds.

B. Fuel Supply Level with or Above Burner

Pumps with automatic bypass do not require a bypass plug. Verify

by referring to the pump manufacturer’s instructions.

The burner may be equipped with a single stage pump. If a one-pipe system is installed, verify a bypass plug is not installed in the pump, then connect the fuel supply to the burner with a single supply line Note that manual bleeding of the pump is required on initial start-up or when the equipment runs out of fuel. When connecting a two-pipe fuel system, install the pump bypass plug.

C. Fuel Supply Below Level of Burner

When the fuel supply is more than eight feet below the level of the burner, a two-pipe fuel supply system is required. Depending on the fuel line diameter and the horizontal and vertical length, the installation may also require a two-stage pump. Consult the fuel unit manufacturer’s literature for lift and vacuum capability.

D. Fuel Line Replacement (Remote Tank Only)

When replacing fuel lines, continuous lengths of heavy wall copper tubing is recommended. To ensure a tight seal, always use ﬂare ﬁttings. Never use compression ﬁttings. Always install ﬁttings in an accessible location. To avoid vibration noise, fuel lines should not run against the appliance or the ceiling joists.

E. Fuel Line Valve and Filter

Shutoff valves should be located in the oil supply line. Do not install valves in the return line.

24 Vdc SDC Burner Manual

24 VDC specifications

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Beckett 24 VDC manual Fuel Supply

Models: 24 VDC