Arrangement | 4821 Air Burners
Bulletin 4821 Page 4
main air conn.
pilot position designators ‡ are:
gas connection position designators are:
Arrangement Designators are specified relative to the main air connection at 12 o'clock and should be listed for pilot, gas and flame supervison in that order.
flame supervision designators ‡ are: (must be 90, 135 or 180° from pilot)
outside furnace view
‡ Good practice dictates that neither the pilot nor the flame detector be below the centerline of a horizontally-mounted burner.
ORDER MUST SPECIFY : (1) Burner designation (such as 4821-14); (2) Arrangement designation for pilot, gas connection and flame safety positions in that order such as 4821-14, arrangement 3a1 (for the arrangement shown above).
WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.
CONTACT fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
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