Beckett AFII 85, 150, 100 Prepare burner & site, Inspect/prepare installation site

Instruction Manual – Model AFII Oil Burner

Prepare burner & site

Inspect/prepare installation site

Chimney or vent

•Inspect the chimney or vent, making sure it is properly sized and in good condition for use.

•For those installations not requiring a chimney, such as through-the-wall vented appliances, follow the instructions given by the appliance and power venter (if used) manufacturers.

Beckett

Inspect/prepare installation site (continued)

Exhaust fans and other air-using devices

Size air openings large enough to allow for all air-using devices in addition to the minimum area required for combustion air. If there is any possibility of the equipment room developing negative pressure (because of exhaust fans or clothes dryers, for example), pipe combustion air directly to the burner.

Direct air supply and sidewall venting

•When sidewall venting appliances, carefully follow appliance and power venter instructions for installation and wiring.

•AFII burners are equipped with a removable air inlet to allow use of a 4” duct to supply outside air for combustion. Do not exceed 70 equivalent feet. Allow 6 feet for each elbow.

1.Remove the inlet cover.

2.Insert 4" duct into the inlet ring.

3.Fasten duct into place using at least 3 sheet metal screws evenly spaced around the inlet ring. Refer to Figure 1.

4.Remove the barometric draft control unless it is in the same atmospheric pressure zone as the inlet.

On the outside of the home use a 90° elbow pointed downward with a 1/4" mesh screen over its opening. The air inlet elbow must be located above the snow line and in such a way as to prevent leaves and/or other debris from blocking the air flow. Such debris will prevent proper operation of the burner. Refer to local codes for proper location of inlet.

Figure 1 – Outside air connection

4 IN. DUCT	AIR
	INLET
	ELBOW

¼” MESH SCREEN

INLET

RINGSK8810

Combustion air supply

See NFPA Standard 31 for complete details.

WARNING If the burner is not supplied with a reliable combustion air source, the burner cannot properly burn the fuel. This would result in incomplete combustion, causing sooting and possible emission of carbon monoxide. Severe personal injury, death or substantial property damage could occur.

Appliance located in confined space

The confined space should have two (2) permanent openings: one near the top of the enclosure and one near the bottom of the enclosure. Each opening shall have a free area of not less than (1) one square inch per 1,000 BTU’s per hour of the total input rating of all appliances within the enclosure. The openings shall have free access to the building interior, which should have adequate infiltration from the outside.

Clearances to burner and appliance

•Provide space around burner and appliance for easy service and maintenance.

•Check minimum clearances against those shown by the appliance manufacturer and by applicable building codes.

Combustion chamber — Burner retrofitting

Verify that the appliance combustion chamber provides at least the minimum dimensions given in Table 2.

CAUTION When retrofitting an appliance that has an unlined stainless

steel combustion chamber, chamber burnout could result from the use of a high performance burner. Protect the chamber from high temperatures through the use of "wet-pac" or a similar ceramic liner. Some equipment may utilize a stainless steel combustion chamber that has been designed and tested by the manufacturer for use with a flame retention burner, therefore ceramic protection would not be necessary. Refer to appliance manufacturer’s instructions. Failure to comply could result in damage to heating equipment.

Table 2 – Minimum combustion chamber dimensions

Chamber dimension (inches)

Firing	Round	Rectangular			Floor to
rate				Height
	I.D.				nozzle
(gph)		Width	Length
0.50	8	7	8	12	5-6
0.75	9	8	9	12	5-6
1.00	10	9	10	12 ½	5-6
1.25	11	10	11	12 ½	5-6
1.50	12	11	12	13	6-7

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