Beckett CF2500 manual Mount Air Tube to Burner, Install Nozzle Line Assembly

Section: Mount the Burner

Mount Air Tube to Burner

○Remove the rear access door from the back of the burner for improved access to the interior.

○Attach the air tube to the burner with the bolts and acorn nuts provided. The acorn nuts must go on the outside of the burner, with the bolts inserted from the inside.

Install Nozzle

See Figure 5. Install the oil nozzle in the nozzle adapter. Use a 3/4” open-end wrench to steady the nozzle adapter and a 5/8” open-end wrench to turn the nozzle. Tighten securely but do not overtighten.

Check Electrode Settings

Maintain Electrode

Specifications

Failure to properly maintain these specifications could cause ignition malfunction, puff-back of hot gases, heavy smoke, asphyxiation, explosion and fire hazards.

Check, and adjust if necessary, the critical dimensions P, Q, R and S shown in Figure 5. Verify that the oil tube assembly and electrodes are in good condition, with no cracks or damage.

Install Nozzle Line Assembly

○Insert the nozzle line assembly into the burner air tube as in Figure 6.

○See Figures 6 and 7. Assemble the adjusting plate assembly per the instructions in the assembly packet.

○Slide the secondary adjusting plate (item f) completely to the left on the indicator adjusting plate (item e). Finger-tighten acorn nut (item c) to secure the two plates together. Slide both plates completely to the left on the primary adjusting plate (item g) and finger-tighten acorn nut (item d).

○Slide the completed adjusting plate assembly over the nozzle line end. Move the plate assembly and the nozzle line so the plate assembly fits into position as shown in Figure 6.

○Install the spline nut (Figure 6, item b) on the end of the nozzle line, leaving the nut loosely placed so the plates can be moved.

○Connect the high-voltage leads from the ignition transformer to the electrodes.

Figure 5 – Nozzle and Nozzle Line Assembly

S Q

		P
Low fire	High fire
nozzle	nozzle		R

3504

Legend for Critical Dimensions

PNozzle centerline to electrode tip - 1/4”

QNozzle to head - 1/4”

RNozzle face to electrode tip - 1/8”

SElectrode spacing - 3/32”

Figure 6 – Nozzle Line Assembly in Burner

Measure dimension ‘Z’ from front (flat) face of head to end of air tube, as shown.

Measure dimension ‘Z’ from the flat surface between (not on) the raised fins.

ZDimensions CF2500A/CF2500 = 1-3/4 ±1/16” CF3500A (tube KM) = 2-5/8” ±1/16” CF3500A (tube KR)= 3-9/16” ±1/16”

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