Sheet 4723-4 Page 3
OPTIONAL AIR JET The air jet is a small tube that delivers a high velocity jet of air to improve mixing at low fire. This reduces the formation of CO and allows the fuel/air ratio to be maintained as the burner turns down to low fire. The jet provides 98 cfh air when piped to a constant 16 osi air supply, regardless of burner firing rate. A UV cell can be attached to the back of the jet assembly for flame supervision. Using the jet will reduce the maximum excess air limit at low fire rates. Since jet air is intended for use in low excess air conditions this should not be an issue. If higher excess air rates are desired, lowering the jet pressure to 8 osi will increase the excess air limit while still retaining most of the advantages of the jet.
3"
Jet assembly
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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