Instruction Manual –
Model AF Oil Burner
Beckett
Inspect/prepare installation site
Inspect/prepare installation site
(continued)
Clearances to burner and appliance
Chimney or vent
•
Inspect the chimney or vent, making sure it is properly sized and in good
condition for use.
•
Provide space around burner and appliance for easy service and
maintenance.
•
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.
•
Check minimum clearances against those shown by the appliance
manufacturer and by applicable building codes.
Direct air supply and sidewall venting
Combustion chamber — Burner retrofitting
•
When sidewall venting appliances, carefully follow appliance and power
venter instructions for installation and wiring.
Verify that the appliance combustion chamber provides at least the minimum
dimensions given in Table 2.
•
Some AF burners are equipped with combustion air boots to allow use of
outside air for combustion.
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.
•
Model AF burners are not typically approved for direct venting
applications.
Combustion air supply
See NFPA Standard 31 for complete details.
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
Table 2
– Minimum combustion chamber dimensions
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.
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), either pipe combustion air
directly to the burner or provide a sealed enclosure for the burner and
supply it with its own combustion air supply.
Outside air kit applications
Refer to separate instruction sheet supplied with AF outside air kit for
installation. This optional kit allows combustion air to be piped directly to the
burner (Beckett part number 51747).
You must install the outside air kit strictly following the kit
installation instructions. Do not attempt to install outside air piping without
using the AF outside air kit and instructions. Failure to do so could result in
burner or heating appliance failure, causing potential severe personal injury,
death or substantial property damage.
Chamber dimension (inches)
Rectangular
Firing
rate
(gph)
Round
I.D.
Width
Length
Height
Floor to
nozzle
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
2.00
14
12
15
13 ½
6-7
2.50
16 13 17 14 7-8
3.00
18
14
18
15
7-8
CAUTION
WARNING
WARNING
Prepare burner & site
4
