Product Overview | 4472 ATP™ Burner
For preheated air applications, 4472 Burners have refractory lined bodies and backplates. Internal parts include a refractory stabilizer and an investment cast A330SST nozzle. For cold are applications, refer to Bulletin 4482. Burners use gas pressure to create a flame shape and heat pattern that is most advantageous for the furnace contour and application. A controlled flame shape is desirable in almost any application--it is essential in many to realize optimum furnace performance. 4472 ATP Burners are used with combustion air temperatures ranging from ambient to 1200°F, on a wide variety of furnaces operating up to 2600°F. Adaptive profiling principles enable these burners to vary flame configuration from approximately 750 000 Btu/h HHV per foot of length to 1 700 000 Btu/h HHV per foot. User can manually select optimum flame shape with the flame adjustment, which is an integral part of the gas connection. OPERATION Burners are designed for 10"w.c. maximum recommended air pressure. Operation is quiet and the burner is stable over a wide range of air/gas ratios ranging from 30% fuel rich to 1000% excess air at 10"w.c.
If flame supervision is used, pilot must be of the interrupted type. UV flame detection is recommended (using an 883—-D adapter). It is possible for a UV scanner mounted on this burner to sight flame(s) of other burners in the same firing chamber. Consult North American for configuration guidance on multiple burner applications. LOW NOx The 4472 ATP Burner is an inherently Low NOx burner. In conjunction with other NOx reducing features, it is capable of meeting emission limitations for new or retrofit applications in environmentally sensitive installations. Contact North American for specific applications. BURNER TILE CONSTRUCTION 4472 Burners do not include a tile. Tunnel shapes and recommended installation shown on Dimensions & Installation 4472. OTHER FUELS For other gaseous fuels and oils, contact North American.
Stoichiometric turndown is 10:1 with 10"w.c. main air pressure (thermal turndown is extended to 15:1).
Adaptive Thermal Profiling (ATP) distributes the heat where it’s needed...
Standard design is for 8 psig gas at the burner. To optimize performance, the temperature of preheated air should be considered when ordering. See back side for operating temperatures and ordering information.
2 to 34 million Btu/h HHV with hot air (3 to 55 million Btu/h HHV with cold air)
Refractory Flame Stabilizer
Main Air
A constant gas jet at 8 psi and 5% of maximum capacity maintains flame definition as input is reduced.
Gas Inlet
A low fire start is required at 1"w.c. or less main air pressure.
Jet Gas
Burners are designed to be mounted no more than 15° from horizontal. Contact Fives North American Combustion, Inc. if your application requires a greater angle. CONTROL Mass flow control is recommended. Standard 4472 ATP TM Burners have a single gas connection with internal tangential/forward gas adjustment for flame shaping. Main and center jet gas should be supplied to the burner at the same time. See flow control schematic. PILOT and FLAME SUPERVISION Burners are ignited with a gas-boosted pilot. Pilot air pressure must be at least 10"w.c., and pilot regulator must be cross- connected to the pilot air line (see Sheet 4014). See Dimensions & Installation 4472 for pilot size.
S L
Manual Flame Length Adjustment
investment Cast A330SST Nozzle
Refractory Liner
Tangential gas--Increasing tangential gas flow (with flame adjustment screw S) shortens flame. Forward gas--Increasing forward gas flow (with flame adjustment screw L) lengthens flame. Jet gas--used to maintain flame definition as input is reduced.
Bulletin 4472 Page 2
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