4.FINAL CHECKS
M.Measure Stack Temperature Operating the unit at an excessive firing rate will generate more heat than the heat exchanger can utilize and result in unnecessary heat loss up the chimney. Other causes of excessive heat loss are badly sooted heat exchanger surfaces and excessive draft. The temperature of the flue gas provides an indication of these heat losses.
Measure flue temperature by subtracting the room air temperature from the thermometer reading. Excessive stack loss is indicated of the net stack temperature during steady operation exceeds 600° F.
N.Check Ignition Check operation over repeated cycles to insure prompt ignition on starting.
O.Check Pump Cutoff Slow pump cutoff at the end of a firing cycle can cause smoke and other pollutant emissions. Check for prompt pump cutoff by observing flame or by testing smoke at shutdown. If poor cutoff is observed, make sure air is purged from the pump and nozzle line. Air trapped in the pump or nozzle line will expand when heated, thus causing oil to drip into the combustion chamber after shutdown. If poor cutoff persists, repair or replace pump. Also make sure the pump solenoid is working. If not replace.
SHORT FORM ADJUSTMENT
PROCEDURE
Some burner service organizations may wish to perform a shorter procedure for the adjustment of oil burners. The following is an example of such a short form prepared by the National Association of Oil Heat Service Managers.
1. SERVICE AND CLEAN BURNER Follow company procedure to complete the cleaning and servicing. Operate burner for ten minutes while tools are gathered and are cleaned.
2, CHECK DRAFT
Set draft regulator, if necessary. Regulator should be adjusted to achieve a
3.SMOKE TEST
Follow the instructions of the manufacturer of the smoke tester and take a smoke sample. Adjust the air to obtain a preliminary reading of about No. 3 spot. Then readjust the air to obtain the lowest possible reading, but do not open the air adjustment more than absolutely necessary to obtain a trace or No. 0 spot.
4.CO2 TEST
Check CO2 levels. This level should be between 10% and 12%.
Manual
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