Engineering Specifications 6131 Page 2
Standard Components: The 4/6131 Burner includes the pilot gas regulator, pilot gas solenoid (2nd solenoid optional), 6000 volt ignition transformer, electric modulating control motor (air motor optional), low combustion air interlock, and burner hinge inter- lock switch. Oil burners also include a solenoid valve (or optional motorized automatic valve), piped between the hinge and atom- izer assembly. All electrical components are wired to the burner mounted NEMA 4 junction box. Turndown: Typical air turndown is 4:1 on standard models. Greater turndown can be achieved with an optional blower air inlet controller. Consult North American, Cleveland, for details. Excess Air: Standard burner linkage is factory set to deliver 20% excess air. Rates greater than 20% are possible through reduction of fuel input. Flame Characteristics: These burners generate well- defined medium length flames. See Supplement 6131-1 for flame sizes. Chamber Pressures: Designed for stable operation in chambers with pressures ranging from –0.5"w.c. to 2.0"w.c. The "N" burner is specified on applications with 0 to –0.5"w.c. chambers (i.e., 2-pass boilers, dryers, heaters, etc.) and the "P" burner is specified on those with 0.1 to 2.0"w.c. chambers (i.e., 3-pass boilers, etc.). Consult Fives North American, Cleveland, for burner performance with other pressures. Underwriters Laboratories Listing: The Model 4/6131 Burners have been designed in accordance with the requirements of the Underwriters Laboratories.
The Packaged Automatic Burners are ideal for steel firebox, scotch marine, cast iron sectional, and watertube boilers, and industrial process heating equipment, such as air heaters, dryers, oil heaters, ovens, and incinerators. Six frame sizes produce a wide range or capacities (4 200 000 to 30 000 000 Btu/h HHV). Design: The 4131 Burner is for any fuel gas; and the 6131 for dual-fuel (combination gas and oil). All are of the nozzle mix design with an integral blower to supply 100% combustion air. Oil atomizers are of the tip emulsion design, using steam or compressed air as the atomizing medium. The hinged construction provides quick and complete accessibility. Fixed fuel lines need not be broken for service because fuel oil enters through the burner hinge and gas enters through a stationary gas section. Construction: This rugged burner consists of a cast iron mount- ing plate, with slotted mounting holes, fitted with a high strength case refractory burner tile rated for service up to 2600°F. A stain- less steel tile support jacket is available as an option. The circular gas plenum has a bottom gas inlet, a combustion air diffuser, and a spark-ignited gas pilot (for natural gas or propane). The hinge-mounted blower section includes the blower motor, impeller, intake guard (or optional intake silencer), a large reinforced glass observation port, provisions for mounting a flame detector, and flange mounted oil atomizer. An accurate linked valve ratio control is provided by a compact arrangement of aircraft-quality linkage rods and swivels that connect the internal main air proportioning shutters with a butterfly gas valve and/or a Sensitrol™ oil valve and the modulation motor.
Hinged construction provides for complete accessibility to burner internals.
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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