Beckett 100 Manuel D’Utilisation

 

Instruction Manual – 

Model AFII Oil Burner 

 

Exhaust fans and other air-using devices 

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

condition for use. 

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. 

•  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. 

•  When sidewall venting appliances, carefully follow appliance and power 

venter instructions for installation and wiring. 

•  Provide space around burner and appliance for easy service and 

maintenance. 

•  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. 

•  Check minimum clearances against those shown by the appliance 

manufacturer and by applicable building codes. 

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 

 

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

        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  

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. 

 

8 

7 

8 

12 

5-6 

9 8 9 12 5-6 

10 

9 

10 

12 ½ 

5-6 

11 

10 

11 

12 ½  

5-6 

12 

11 

12 

13 

6-7 

INLET 
RING 

4 IN. DUCT

¼” MESH 
SCREEN 

AIR 
INLET 
ELBOW 

SK8810

Prepare burner & site 

 

 

 

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.