Beckett Oil Burner, AFG manual Start up burner/set combustion, Set combustion with instruments

Start up burner/set combustion

!WARNING Explosion and Fire Hazard

Failure to follow these instructions could lead to equipment malfunc- tion and result in heavy smoke emission, soot-up, hot gas puff- back, fire and asphyxiation hazards.

yDo not attempt to start the burner when excess oil has accumulated in the appliance, the appliance is full of vapor, or when the combustion chamber is very hot.

yDo not attempt to re-establish flame with the burner running if the flame becomes extinguished during start-up, venting, or adjustment.

yVapor-Filled Appliance: Allow the unit to cool off and all vapors to dissipate before attempting an- other start.

yOil-Flooded Appliance: Shut off the electrical power and the oil supply to the burner and then clear all accumulated oil before continuing.

yIf the condition still appears unsafe, contact the Fire Department. Carefully follow their directions.

yKeep a fire extinguisher nearby and ready for use.

1.Open the shutoff valves in the oil supply line to the burner.

2.Close air band and partially open air shutter. This is an initial air setting for the pump bleeding pro- cedure only. Additional adjustments must be made with instruments.

3.Set the thermostat substantially above room tem- perature.

4.Close the line voltage switch to start the burner. If the burner does not start immediately you may have to reset the safety switch of the burner pri- mary control.

5.Bleed air from fuel unit as soon as burner motor starts rotating.

yTo bleed the fuel unit, attach a clear plastic hose over the vent fitting. Loosen the fitting and catch the oil in an empty container. Tighten the fitting when all air has been purged from the oil supply system.

yIf the burner locks out on safety during bleeding, reset the safety switch and complete the bleed- ing procedure. Note — Electronic safety switches can be reset immediately; others may require a three- to five-minute wait.

yIf burner stops after flame is established, addi- tional bleeding is probably required. Repeat the bleeding procedure until the pump is primed and a flame is established when the vent fitting is closed.

yFor R7184 primary controls, see Technician’s Quick Reference Guide, part number 61351 for special pump priming sequence.

yPrepare for combustion tests by drilling a ¼” sam- pling hole in the flue pipe between the appliance and the barometric draft regulator.

6.Initial air adjustment — Using a smoke tester, ad- just the air shutter (and air band, if necessary) to obtain a clean flame. Now the additional combus- tion tests with instruments can be made

Set combustion with instruments

1.Allow the burner to run for approximately 5 to 10 minutes.

2.Set the stack or over-fire draft to the level specified by the appliance manufacturer.

yNatural Draft Applications; typically over-fire draft is -0.01” or -0.02” w.c.

yDirect Venting; typically may not require draft adjustment.

yHigh Efficiency/Positive Pressure Appliances; also vary from traditional appliances (see manu- facturer’s recommendations).

3.Follow these four steps to properly adjust the burn- er:

Step 1: Adjust the air shutter/band until a trace of smoke is achieved.

Step 2: At the trace of smoke level, measure the CO2 (or O2) . This is the vital reference point for further adjustments. Example: 13.5% CO2 (2.6% O2)

Step 3: Increase the air to reduce the CO2 by

1.5to 2 percentage points. (O2 will be in- creased by approximately 2.0 to 2.7 per- centage points.) Example: Reduce CO2 from 13.5% to 11.5% (2.6% to 5.3% O2).

Step 4: Recheck smoke level. It should be Zero.

•This procedure provides a margin of reserve air to accommodate variable conditions.

•If the draft level has changed, recheck the smoke and CO2 levels and readjust the burner if necessary

4.Once combustion is set, tighten all fasteners on air band, air shutter and head adjusting plate or es- cutcheon plate.

5.Burner equipped with cover - Reinstall the cover and repeat Steps 2 and 4 above. If CO2 increases (O2 decreases), remove the cover and adjust the air setting so the CO2 (O2) with cover on meets requirements of Step 3.

6.Start and stop the burner several times to ensure satisfactory operation. Test the primary control and all other appliance safety controls to verify that they function according to the manufacturer’s specifica- tions.

RWB 6104 BAFG R02 Page 13