‰Combustion air supply

yThe burner requires combustion air and ventilation air for reliable operation. Assure that the building and/or com- bustion air openings comply with National Fire Protec- tion Standard for Oil-Burning Equipment, NFPA 31. For appliance/burner units in confined spaces, the room must have an air opening near the top of the room plus one near the floor, each with a free area at least one square inch per 1,000 Btu/hr input of all fuel burning equipment in the room. For other conditions, refer to NFPA 31 (CSA B1139-M91 in Canada).

yIf there is a risk of the space being under negative pres- sure or of exhaust fans or other devices depleting available air for combustion and ventilation, the appliance/burner should be installed in an isolated room provided with out- side combustion air.

‰Clearances

yWith the burner installed in the appliance, there must be adequate space in front of and on the sides of the burner to allow access and operation. Verify that the clearance dimensions comply with all local codes and with the ap- pliance manufacturer’s recommendations.

‰Fuel supply

yThe fuel supply piping and tank must provide #1 or #2 fuel oil at pressure or vacuum conditions suitable for the fuel unit (oil pump) on the burner. Refer to fuel unit literature in the literature envelope in the burner carton to verify al- lowable suction pressure.

Oil Supply Pressure

Control Required

Damage to the pump, filter or other compo- nent seals could cause possible oil leakage and potential fire hazard.

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

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

If fuel supply is level with or higher than fuel unit —

yWhen the fuel unit is not required to lift the oil, the instal- lation is usually suitable for either a one-pipe or two-pipe oil system. The oil pressure at the inlet of the fuel unit must not exceed 3 psig.

yRefer to the Mount the Burner Section of this manual for one-pipe or two-pipe fuel supply installation instructions.

If fuel supply is below the fuel unit —

yUse a two-pipe oil system when the fuel unit must lift the oil more than 8 feet if burner is equipped with a B fuel unit. The return line provided by the two-pipe system is needed to purge the air from the fuel lines and minimize the likelihood of air-related problems during operation.

‰Nozzle pressure

Correct Nozzle and Flow

Rate Required

Incorrect nozzles and flow rates could result in impaired combustion, under-firing, over-firing, sooting, puff-back of hot gases, smoke and potential fire or asphyxiation haz- ards.

Use only nozzles having the brand, flow rate (gph), spray angle and pattern specified by the appliance manufac- turer.

Follow the appliance manufacturer’s specifications for the required pump outlet pressure for the nozzle, since this affects the flow rate.

yNozzle manufacturers calibrate nozzle flow rates at 100 psig.

yThis burner utilizes pressures higher than 100 psig, so the actual nozzle flow rate will be greater than the gph stamped on the nozzle body. (Example: A 2.00 gph nozzle at 150 psig = 2.45 gph.

yFor typical nozzle flow rates at various pressures see accompanying chart.

yThe fuel unit nozzle port pressure is factory set at 140 psig. Some original equipment manufacturer burner appli- cations may call for a lower pressure to obtain a required firing rate. Do not change this pressure unless directed to do so by the appliance manufacturer.

‰Vent system

yThe flue gas venting system must be in good condition and must comply with all applicable codes.

‰Electrical supply

yVerify that the power connections available are correct for the burner. All power must be supplied through fused dis- connect switches.

‰Verify burner components —

yBurner, Model CF375

yAir tube assembly

yMounting flange kit

yOil nozzle, per Table 1 — Only 45° to 70° solid pattern nozzles are recommended unless otherwise specified by appliance manufacturer. (See specific appliance recom- mendation sheet or refer to OEM Spec Guide). Find the required firing rate in the 150 psig column (factory-set fuel unit pressure). Select the corresponding nozzle from col- umn 1 (Rated gph @ 100 psig).

6104 BCF3 R02

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Beckett CF375 manual Oil Supply Pressure Control Required, Correct Nozzle and Flow Rate Required
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CF375 specifications

The Beckett CF series, encompassing models CF3500A, CF2500A, CF2300A, CF800, and CF375, represents a robust lineup of oil burners designed for residential and commercial heating applications. These models are engineered for efficiency, reliability, and ease of use, making them a preferred choice among HVAC professionals and homeowners alike.

The CF3500A is a high-capacity model that excels in providing consistent heating for larger spaces. With a firing rate of up to 3.5 gallons per hour, it is equipped with advanced nozzle technology that improves fuel atomization, resulting in better combustion efficiency. This model features a compact design, making it easy to install in various settings, and it includes an integrated control module for straightforward operation.

The CF2500A offers impressive performance with a moderate firing rate suitable for mid-sized buildings. It incorporates Beckett's patented Clean Cut design which minimizes smoke and reduces emissions. This model also comes with a diagnostic LED display, allowing for quick identification of system status and potential issues, enhancing maintenance efficiency.

The CF2300A is tailored for smaller applications while still maintaining a strong performance profile. Its compact size does not compromise power, as it utilizes advanced combustion technologies to ensure effective heating. The user-friendly interface allows for effortless adjustments, and its low profile design fits into tight spaces, making it ideal for residential use.

For applications requiring versatility, the CF800 stands out with a multi-fuel capability, allowing it to run on both oil and biodiesel. It boasts an energy-efficient design that contributes to cost savings over time. The CF800's unique air delivery system enhances combustion efficiency, reducing noise levels and improving overall comfort in the living environment.

Finally, the CF375 is designed for high-efficiency performance in professional settings. Its durable construction ensures long-lasting service, and it is equipped with advanced control systems that optimize fuel delivery and combustion. This model is particularly noted for its low emissions, aligning with modern environmental standards while providing reliable heating.

Together, the Beckett CF series exemplifies cutting-edge technology and engineering excellence, catering to diverse heating needs. Each model is a testament to Beckett’s commitment to energy efficiency, performance, and environmental responsibility, making them suitable choices for both residential and commercial heating applications.
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