Maintenance and service, Set low-fire air

Instruction Manual – Model CF2500/CF3500 Oil Burner

b. Slowly rotate the air adjusting plate (increase the amount of air) as the damper drives to high-fire.

c.Lock down air adjusting plate at the high-fireair set- ting found in Table 5 for the high-firerate.

6.Use combustion test instruments to adjust the burner.

a.Adjust the air until a trace of smoke is achieved with

CO2 level as high as possible (lowest possible O2). Example: 13.5% CO2 (2.5% O2) with a trace of smoke.

b.Increase the air to reduce CO2 by 2 percentage points at a zero smoke level. (Increase O2 by 3 percentage points at a zero smoke level.)

Example: Reduce CO2 from 13.5% to 11.5%, with zero smoke (or increase O2 from 2.5% to 5.5%).

c.A margin of reserve air has been added to accommo- date variable conditions.

7.Check the breech draft pressure against the appliance manufacturer’s recommended setting (typically + 0.1" W.C.).

8.If the breech pressure is higher or lower than recommended level, adjust the appliance breech damper to achieve the

specified setting. Recheck the smoke and CO2 levels. Adjust burner air if necessary.

9.Once all settings are complete and satisfactory, rotate the damper linkage arm (Figure 12, item f) until it touches the damper rod (Figure 12, item d) and tighten the damper linkage arm screw securely.

❏Set low-fire air

1.Loosen the air adjusting plate (Figure 12, item m) screw and set the air adjusting plate at the low-fireair setting found in Table 5, page 13. The damper should stay at the high-fire setting. The damper linkage will prevent move- ment of the damper plate.

2.Move the low-fire hold switch from the “OUT” to the “IN” position.

a.The damper will return to the low-fireair setting.

3.Check the smoke and CO2 (O2) levels.

a.Pull a smoke sample from the flue.

b.The sample should be clean (zero smoke level).

c.Check the CO2 (O2) level:

CO2 should be at 11 to 12% (O2 at 5.9 to 4.5%).

If the CO2 is less than 11% (O2 more than 5.9%), decrease the air and check the smoke level.

4.Operate the burner from low fire to high fire and back to verify operation.

5.Turn the burner off. Wait one or two minutes (for chamber to clear) and then turn on again to verify starting charac- teristics.

6.Perform limit circuit performance test specified by appli- ance manufacturer to verify operation of burner/appli- ance combination.

Maintenance and service

The burner must be serviced at least annually by a qualified service technician to assure continued reliable operation. Operation and adjustment of the burner requires technical knowledge and the use of combustion test instruments. Do not tamper with the burner or controls. Failure to comply could result in failure of the burner or system, resulting in severe personal injury, death or substantial property damage.

Annual service

—by qualified service technician

Have the burner inspected, tested and started at least annually by a qualified service technician. This annual test/inspection should include at least the following:

❏Replace oil nozzles.

❏Clean burner and blower wheel (if needed to remove lint or debris).

❏Test ignition and combustion at low and high fire and verify air damper settings.

❏Test oil supply line vacuum - verify that it is within al- lowable range indicated in fuel unit literature.

❏Check pump pressure to nozzles at low and high fire.

❏Inspect fuel system (including tank, lines and all connec- tions).

❏Inspect combustion air and vent systems.

❏Replace oil filter.

❏Oil motor (if not permanently lubricated).

Monthly maintenance

—by owner

❏Observe combustion air openings and vent system for integrity. Openings must be clean and free of any obstruc- tions.

❏Check the oil lines and fittings to verify there are no leaks.

❏Observe burner ignition and performance to verify smooth operation.

❏Shut the system down if you observe abnormal or ques- tionable operation. Call a qualified service agency for professional inspection and service.

Form 6104 BCF-35-R0699

CF 2500/ 3500 specifications

The Beckett CF 2500/3500 series represents a significant advancement in the oil burner technology, widely recognized for its high efficiency and reliability. These burners are designed for residential and light commercial applications, ensuring optimal heating performance with minimal environmental impact.

One of the standout features of the CF 2500 and 3500 models is their robust construction, which utilizes high-quality materials to enhance durability and longevity. This is particularly beneficial in demanding operational environments where the equipment may be subject to wear and tear. Both models are equipped with an advanced combustion head that promotes superior air-fuel mixing, leading to more efficient burning and lower emissions.

The combustion technology employed in these burners is centered around reliable ignition and stable flame management. The CF series features an innovative electronic control system that not only allows for precise control of the burner operation but also includes diagnostic capabilities. This ensures that maintenance can be performed efficiently, reducing downtime and service costs.

In terms of energy efficiency, the CF 2500/3500 models boast impressive ratings, making them ideal for homeowners looking to reduce energy bills while minimizing their carbon footprint. The burners can seamlessly integrate with various heating systems, providing flexibility in design and installation.

Another noteworthy characteristic is the user-friendly design, which simplifies the installation process. The compact size of the CF series allows it to fit into tight spaces while still delivering powerful performance. Moreover, the access panels for maintenance are strategically placed, enhancing technician efficiency during service calls.

Safety features are paramount in the Beckett CF series, which includes flame monitoring and flame failure response systems. These features ensure that the burner operates safely and effectively, thereby minimizing the risk of operational incidents.

In conclusion, the Beckett CF 2500 and 3500 oil burners are a blend of efficiency, ease of use, and safety. Their advanced technologies and features set a new standard in the oil burner market, making them a top choice for those seeking reliable and eco-friendly heating solutions. These units not only meet the demands of today's heating requirements but also set a path towards a more sustainable future.