AF/AFG WARNING Potential for Fire, Smoke and Asphyxiation Hazards Incorrect installation, adjustment, or misuse of this burner could result in death, severe personal injury, or substantial property damage. To the Homeowner or Equipment Owner: Please read and carefully follow all instructions provided in this manual regarding your responsi- bilities in caring for your heating equipment.
Parts Diagram Beckett Limited Warranty Information This manual contains information that applies to both AF and AFG burners. These burners may appear to be basically identical, but there are differences in design and performance. Please review the comparison chart below:...
Do NOT remove the air guide from the AFG chassis. Do NOT use ‘M’ Series air tube combinations on AF Burn- ers. Never try to convert and AF to and AFG or vice versa Any design alteration will: Void UL Listing Void manufacturer’s warranties...
Concealed damage — If you discover damage to the burner or controls during unpacking, notify the carrier at once and ﬁ le the appropriate claim. When contacting Beckett for service information — Please record the burner serial number (and have available when calling or writing). You will ﬁ...
Outside air kit applications Refer to separate instruction sheet supplied with AF/AFG outside air kit for installation. This optional kit allows combustion air to be piped directly to the burner (Beckett part number 51747). Clearances to burner and appliance Provide space around burner and appliance for easy service and maintenance.
Attach air tube (if not already installed) If using a ﬂ ange and gasket, slide them onto the air tube. Then attach the air tube to the burner chassis using the four sheet metal screws provided. Refer to Figure 3 for details.
You will need to reset the “Z” dimension if you replace the air tube or nozzle line assembly. The Beckett Z gauge (part number Z-2000) is available to permit checking the F head “Z” dimension without removing the burner from the appli- ance.
Place the end of a ruler at the leading edge of the head and, us- ing a straight edge across the end of the air tube, measure the distance to the end of the tube. A Beckett T501 gauge may also be used.
Bolt the burner to the appliance using the fac- tory-mounted ﬂ ange or an adjustable ﬂ ange. Mounting dimensions When using the Beckett universal adjustable ﬂ ange, mount the air tube at a 2° downward pitch unless otherwise speciﬁ ed by the appli- ance manufacturer.
Fuel supply below the level of the burner – When the fuel supply is more than eight feet below the level of the burner, a two-pipe fuel supply sys- tem is required. Depending on the fuel line diam- eter and horizontal and vertical length, the instal- lation may also require a two-stage pump.
Referring to the ﬁ gure below, slide the new blower wheel onto the shaft. Use a feeler gauge to set the wheel-to-motor gap, as shown below. (AF = 0.125 +1/64 inch, AFG = 0.030 +1/64 inch) Slide blower wheel toward motor until it con- tacts feeler gauge.
5782 5940 3666 5685 51814U ** Contact your Beckett Representative for part num- ber and pricing. Parts that are unique to AF burn- ers replace parts numbered 6 and 31841 AIR INLET BELL 14. Refer to parts list below for part 2459U BLOWER WHEEL numbers.
Beckett Burners, Beckett-branded major components and non-Beckett-branded major components that came as original equipment on a Beckett burner or were sold as a replacement part by Beckett should be returned, freight prepaid, to Beckett’s home office. Credit will be issued to the customer unless the returned equipment is determined by Beckett to be out of warranty or damaged by user, in which case the equipment will be scrapped.