CF Oil Burner Instruction Manual Low/High Operation Firing rate: CF2500A 17.0 – 19.9 GPH CF2500 17.0 – 25.0 GPH CF3500A 17.0 – 35.0 GPH Motor voltage: 208/230 — 60 Hz std. Thank you for purchasing a Beckett burner. With proper care and regular maintenance, it will provide years of trouble-free service. Please take a few minutes to read the section entitled “To the owner” inside this manual.
Instruction Manual – Model CF2500/CF3500 Oil Burner Please . . . read this page first Hazard definitions The following will be used throughout this manual to bring attention to hazards and their risk factors, or to special information. Denotes presence of a hazard which, if ignored, will result in severe personal injury, death or substantial property damage. Denotes presence of a hazard which, if ignored, could result in severe personal injury, death or substantial property damage.
Instruction Manual – Model CF2500/CF3500 Oil Burner Warranty Contents Beckett warrants its equipment to those who have purchased it for resale, including your dealer. If you have any problems with your equipment or its installation, you should contact your dealer for assistance. Please . . . read this page first ................ 2 Pre-installation checklist........................... 4 Specifications Fuels Firing range Mount the burner ..........................................
Instruction Manual – Model CF2500/CF3500 Oil Burner Pre-installation checklist ❏ Combustion air supply ❏ Vent system • The burner requires combustion air and ventilation air for reliable operation. Assure that the building and/or combustion air openings comply with National Fire Protection Standard for Oil-Burning Equipment, NFPA 31.
Instruction Manual – Model CF2500/CF3500 Oil Burner ❏ Verify firing rate Figure 2 – Air tube mounting dimensions • Refer to appliance manufacturer’s instructions (if available) for firing rate and nozzle selection. Otherwise, the maximum recommended firing rate for the burner depends on the length of the firing chamber and the distance from the burner center to the chamber floor. Verify that the chamber dimensions are at least as large as the minimum values given in Figure 1.
Instruction Manual – Model CF2500/CF3500 Oil Burner Mount the burner Figure 4 – Nozzle and nozzle line assembly S ❏ Mount flange(s) on air tube P 0.713311" • This section does not apply to burners with welded flanges. • Do not install air tube on burner. • For non-pressure firing flange, refer to Figure 3: Install gasket (item a ) and flange (item d ). Ignore the next paragraph.
Instruction Manual – Model CF2500/CF3500 Oil Burner Figure 5 – Nozzle line assembly in burner Z Measure dimension Z from front (flat) face of head to end of air tube, as shown. d Figure 6 – Adjusting plate assy. g d e f c b a 3508 c Legend (Figures 5 and 6) a b c d 3506 ❏ Set dimension Z 3507 Measure dimension Z from the flat surface between (not on) the raised fins. • Replace the rear access door on the burner, making sure that the adjusting plate assembly is now securely held in place.
Instruction Manual – Model CF2500/CF3500 Oil Burner Connect fuel line(s) • Install the oil lines using the following guidelines. Failure to comply could lead to equipment damage and present a risk of severe personal injury, death or substantial property damage due to leakage of oil and potential fire hazard. • Use only flare fittings at joints and connections. Never use compression fittings. • Install fittings only in accessible locations to assure any leak will be detected.
Instruction Manual – Model CF2500/CF3500 Oil Burner Figure 9a Two-pipe oil flow, one nozzle, low fire, “H” pump d c c g 200 psig to 300 psig 200 psig to 300 psig • Install two high-quality shutoff valves in accessible locations 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. ❏ Burner fuel flow b a p c • One-pipe systems – See Figure 8 for the fuel flow paths for high-fire and low-fire operation.
Instruction Manual – Model CF2500/CF3500 Oil Burner Wire the burner Do not by-pass any safety control. By-passing a safety control could result in severe personal injury, death or substantial property damage. Install the burner and all wiring in accordance with the National Electrical Code and all applicable local codes or requirements. burner, with R8184 oil primary, for reference purposes only. The CF2500/CF3500A burner is available with many different wiring configurations.
Instruction Manual – Model CF2500/CF3500 Oil Burner Sequence of operation — typical 1. On call for heat from the appliance operating controls (and the circuit from T to T of the R8184 closed), power is applied to the R8184 black wire (BK). high fire. The damper motor end switch is set to operate before the damper has reached full open to assure a smooth transition to high fire. 2. The R8184 applies 120 volts to the orange wire (OR), activating the burner motor (M1) and the ignition transformer (TR).
Instruction Manual – Model CF2500/CF3500 Oil Burner Prepare the burner for start-up - continued ❏ Z dimension Figure 11 – Adjusting plate initial setting, typical • Should be set per these instructions (see page 7). The top acorn nut (Figure 11, item d) should never be loosened once the Z dimension is initially set. d ❏ Adjusting plate assembly e f g c b h 3515 (Figure 11) • Make sure spline nut (item b) and bottom acorn nut (item c) are loose.
Instruction Manual – Model CF2500/CF3500 Oil Burner Figure 12 – Air damper and damper motor assembly a a b OPEN CLOSE b CLOSE c d d h e 5 7 8 9 10 1 11 2 2 3 4 6 0 1 f g k m 3516 3517 Table 5 – Initial air adjusting plate settings (damper position) Firing rate, gph Legend (Figure 12) Approximate adjusting plate settings Tube “KP” Tube “KM”/“KR” 0 -- -- 1 8.00 8.00 c Ball joint assembly – do not adjust position of ball joint 2 9.00 9.00 d Damper rod 3 11.00 11.
Instruction Manual – Model CF2500/CF3500 Oil Burner Start the burner Do not proceed unless all prior steps in this manual have been completed. Failure to comply could result in severe personal injury, death or substantial property damage. Do not attempt to start the burner when excess oil has accumulated, when the appliance is full of vapor or when the combustion chamber is very hot.
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-fire air setting found in Table 5 for the high-fire rate. 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.
Instruction Manual – Model CF2500/CF3500 Oil Burner Replacement parts 5 4 2 1 3 11 19 25 20 12 21 LOW FIRE START VALVE OUT IN LOW FIRE HOLD 15 22 16 7 6 8 5 6 7 8 9 10 11 12 0 1 2 3 4 9 13 10 23 3518 14 Item Part name Description Part number 1 Air tube Specify burner model and tube length (See Figure 2, page 5 for codes) 2 Flange kit Adjustable flange 3 Damper motor assem- All models bly 51229 4 Electrode assembly All models 51212 9 ¼" long 5990092 10 ½"
