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7) Measure the oil pump pressure. If required, adjust it to deliver the
appropriate pressure for the burner. The oil pump should be set to produce,
• 130 PSIG, for the R.W. Beckett model AF burner,
• 150 PSIG, for the R.W. Beckett model NX burner,
• 140 PSIG, for the Carlin Combustion model EZ-1HP, and
• 150 PSIG, for the Riello model 40-F3.
NOTICE: On the Riello model 40-F3 burner only, the oil pump port threads
conform to British Standard Parallel Pipe (BSPP) thread design. Pressure
gages or pipefittings with American National Standard Taper Pipe (NPT)
threads will NOT mate with the BSPP design. Special gages compatible with
BSPP thread, or adapter fittings, are required.
8) Carbon Dioxide (CO
2
) and Carbon Monoxide (CO) – In order to assure that
proper and safe combustion is taking place, carbon dioxide and carbon
monoxide measurements must be taken. A CO
2
reading within the limits of
Table 1 with no measurable CO is desirable. The maximum acceptable CO
reading is about 50 PPM. If the CO reading is too high, open the burner air
shutter, or air band, slightly to permit more combustion air to the flame.
Recheck the CO level and adjust as required.
NOTICE: On the Riello 40-F3 burner only, it will be necessary to remove
the oil burner sound cover to make adjustments to the oil pump pressure and
airflow. The presence of the burner sound cover over the burner acts to
restrict airflow to the burner. Thus, combustion quality will be adversely
affected when the cover is installed after airflow adjustments are made. If
adjustments to burner airflow are made w/o the burner cover, it is necessary
to confirm these adjustments produce satisfactory smoke, carbon dioxide,
and carbon monoxide readings w/ the burner cover installed. Repeated
adjustments and tests may be required.
9) Draft – Draft measurements should be taken through the overfire port and in
the vent connector, not more than 12 inches away from the furnace outlet. A
5/16 in. hex washer head bolt plugs the overfire port in the burner mounting
plate. Remove the bolt and insert a suitable draft measurement gage. After
the chimney (or stack gas passageway) has warmed up to operating
temperature, approximately 15 to 20 minutes of burner operation, adjust the
barometric damper to obtain the correct overfire draft reading. The overfire
draft should read 0.02 in. W.G. The draft measured at the flue (stack draft)
should read no more than 0.05 in. W.G.
NOTICE: The overfire draft is the more important measurement and
should be used to adjust the setting of the barometric draft control.