E-Series SN Sealed Nozzles-i
Contents
1. 2009 Copyright Maxon Corporation All rights reserved 3 14 12 E i 6 09 Spark ignitor 10 mm High temperature burners Sealed Nozzles 1 10mm thread ore H Dimensions in inches unless stated otherwise Burner size F G All 2 81 0 25 0 125 Optional cooling tee set 1 Flame rod 2 Cooling air tee Dimensions in inches unless specified otherwise 6 MAXON A Honeywell Company Burner size J All 4 58 W WW MAX ON GO R P COMBUSTION SYSTEMS FOR INDUSTRY Cc OM Maxon reserves the right to alter specifications and data without prior notice 2009 Copyright Maxon Corporation All rights reserved High temperature burners Sealed Nozzles So q4te13 E i 6 09 Installation instructions for Sealed Nozzles Application requirements View port A view port to observe the burner flame is essential to inspect the flame aspect Locate the view port downstream of the flame looking back to the burner block Make sure the complete flame can be evaluated Support burner air and gas piping Sealed Nozzles shall not be used as support for the piping to the burner Gas and air piping shall be supported in such a way that no additional loads will be created on the burner Burner mounting flange loads Check the burner weight and reinforce the burner mounting flange or the combustion chamber furnace back wall if necessary to2. Optional flame rod 4 10mm spark ignitor included with View A A a pressure pilot 5 3 8 pilot gas connection 6 3 8 pilot air connection Dimensions in inches unless stated otherwise Burner size A B Coulee Ful G H J M NO PR Is poe 3 4 5 7 3 4 5 2 31 1 9 2 44 31 7 5 5 1 6 38 8 75 3 75 5 2 28 88 31 1 1 4 12 14 1 1 4 3 62 5 2 4 88 31 1 1 2 16 18 3 31 1 1 2 5 2 58 2 20 3 44 5 2 59 7 2 9 12 12 5 25 3 94 5 12 34 1 2 24 4 19 S8 9 gt 5 2 68 2 1 2 27 4 69 2 1 2 5 2 59 3 33 5 75 5 9 5 9 3 11 5 13 88 6 3 68 5 2 6 12 41 1 25 79 1 Available with NPT or ISO threads W W WwW MAX ON CORP Cc O M 4 COMBUSTION SYSTEMS FOR INDUSTRY MASEN Maxon reserves the right to alter specifications and data without prior notice 2009 Copyright Maxon Corporation All rights reserved A Honeywell Company 3 11 1 10 E i 6 09 Accessories Sealed port pressure pilot High temperature burners Sealed Nozzles This pilot can be mounted directly onto the Sealed Nozzle burner pilot connection It includes the spark ignitor and mounting gasket and is suitable for all burner sizes 1 2 3 4 5 6 Pilot burner nozzle and mounting gasket Spark ignitor Sight glass Gas adjusting needle valve Gas connection 3 8 NPT Air connection 3 8 NPT Dimensions in inches unless stated otherwise A B C D 5 7 3 8 4 4 5 6 4
3. Pre ignition typically 2 s sparking in air Open pilot gas and continue to spark the ignitor typically 5 s Stop sparking continue to power the pilot gas valves and start flame check Trip burner if no flame from here on Check pilot flame stability typical 5 s to prove stable pilot Open main gas valves and allow enough time to have main gas in the burner typical 5 s time required to have main gas in the burner Close the pilot gas valves Release to modulation allow modulation of the burner Above sequence shall be completed to include all required safety checks during the start up of the burner process amp burner safeties Locate one pilot gas valve as close as possible to the pilot burner gas inlet to have fast ignition of the pilot burner Flame supervision Series SN Sealed Nozzles available in 3 4 through 1 sizes consist of a threaded nozzle cast iron frame and a refractory burner block SN Sealed Nozzles do not include any provision for mounting a flame safeguard device Series SNF Sealed Nozzles available in 1 1 4 through 3 sizes are the same as SN Sealed Nozzles but incorporate a flame safeguard port through which a flame rod or a flame detector can be mounted Sealed Nozzle burners can fire in any orientation but the scanner manufacturer may impose limitations Avoid orientations which might permit pilot and or flame supervision ports to collect debris and or condensat
4. www nMaAXONCGCORP CGOM MASc COMBUSTION SYSTEMS FOR INDUSTRY A Honeywell Company Maxon reserves the right to alter specifications and data without prior notice 2009 Copyright Maxon Corporation All rights reserved High temperature burners Sealed Nozzles Soda E E i 6 09 Optional pilot port cover Optional pilot port cover must be used to seal pilot tunnel if no pilot is installed Order pilot port cover set pilot assembly and or flame rod separately 1 Pilot port cover kit Flame rod A flame rod cut length without cooling tee M E T D B flame rod cut length with cooling tee C overall dimension before cutting D length before cutting Dimensions in inches unless stated otherwise Burner size A 1 B 2 C D E 3 4 5 7 1 9 1 1 4 12 14 3 725 7 0 9 8 7 125 2 6 1 1 2 16 18 2 20 2 24 2 4 2 27 4 125 7 12 9 8 7 125 2 6 3 33 without cooling tee 5 625 9 8 7 125 2 6 3 33 with cooling tee 3 8 62 14 8 12 0 2 8 1 Without cooling tee 2 With cooling tee 3 When the flame rod is ordered with the nozzle it is cut to correct length If ordered separately verify that it is cut to correct length A or B in above table W WW MAXON GCG ORP COM 4 COMBUSTION SYSTEMS FOR INDUSTRY MASEN Maxon reserves the right to alter specifications and data without prior notice A Honeywell Com pany
5. 9 Materials of construction High temperature burners Sealed Nozzles Tae oe at ao ae ae at att ae ae Item number Burner part Material 1 Nozzle Carbon steel 2 Burner block Castable refractory 3 Mounting frame Cast gray iron MAXON A Honeywell Company www enMAXK ON CORP COM COMBUSTION SYSTEMS FOR INDUSTRY Maxon reserves the right to alter specifications and data without prior notice 2009 Copyright Maxon Corporation All rights reserved High temperature burners Sealed Nozzles Sq a7 E i 6 09 Selection criteria Sealed Nozzle versions All MAXON burner nozzles are identified with a 3 part designation This code identifies the type of nozzle the inlet pipe size and the main gas port diameter measured in 1 16ths of an inch Type of nozzle Inlet pipe size Main gas port diameter SN 3 4 5 Type of nozzle Inlet pipe size Main gas port diameter SN Sealed Nozzle 3 4 5 5 16 SNF Sealed Nozzle with provision 1 7 7 106 for flame safeguard device 1 1 4 9 9 16 1 1 2 12 3 4 2 14 7 8 2 1 2 16 1 3 18 1 1 8 30 1 1 4 24 1 1 2 27 1 11 16 33 2 1 16 Mixture supply Sealed Nozzle burners require a full air gas premixture from a premixing device MAXON offers a wide variety of premixing equipment for optimal burner fuel supply E PREMIX Blower Mixers E Mixing Tubes amp MULTI
6. High temperature burners Sealed Nozzles Sot ss E i 6 09 Specifications of Series SN Sealed Nozzles Orifice area Maximum capacity 20 wc 1 Minimum capacity 0 25 wc 2 a ne KBtu h KBtu h 3 4 5 0 093 103 13 3 4 7 0 15 161 18 9 0 248 233 26 1 1 12 0 442 385 43 1 1 14 0 601 537 60 1 1 2 16 0 785 689 77 1 1 2 18 0 936 850 95 2 20 1 23 1170 120 2 24 1 767 1565 175 2 1 2 27 2 24 1834 205 3 33 3 34 3200 360 1 Maximum capacity requires 20 wc mixture pressure 2 Minimum capacity at 0 25 wc Note burner turndown is dependent on fuel air ratio control and mixer performance Data in this table are based on 100 mixture firing The Sealed Nozzle burner is designed to operate at an on ratio mixture throughout the entire capacity range 10000 g Zl AZ 29 48 1000 AZ o Ae a yale zA AZ aAA L 9 gt A gare amp 28 2100 aie S 10 r 0 5 10 15 20 Mixture Pressure wc Pressures displayed are measured differentially from the nozzle inlet to the firing chamber wwow eMaAX ON GOR P CGOM N COMBUSTION SYSTEMS FOR INDUSTRY MAXON Maxon reserves the right to alter specifications and data without prior notice A Honeywell Com pany 2009 Copyright Maxon Corporation All rights reserved 3 11 1 6 E i 6 0
7. RATIO Mixers VENTITE Inspirators H MG Mixing Tubes A complete burner nozzle system will also include gas train proportioning and mixing equipment combustion air supply anda combustion control panel Contact MAXON for more information Process temperature Standard burner block material is suitable for operating temperatures up to 2600 F The maximum operating temperature limit may be downrated to 2400 F if the Sealed Nozzle Burner is operating under the following conditions E burner is installed in a furnace with fiber wall construction E frequent cycling inducing thermal shock and stresses Optional refractory block materials are available to extend maximum operating temperature limits up to 3000 F contact MAXON for more information Piloting and ignition All Sealed Nozzle assemblies include a pilot port tunnel and provision for mounting of a broad range of accessory pilots NOTE Every Sealed Nozzle burner must be ordered either with an appropriate pilot assembly or with optional pilot port cover kit If a pilot assembly is not ordered a pilot port cover kit must be used to prevent the possibility of flame and or hot combustion gases escaping out of the burner s open pilot port tunnel or to prevent infiltration of secondary air on un piloted installations wwow enMAXK ON CORP CGO M 4 COMBUSTION SYSTEMS FOR INDUSTRY MASEN Maxon reserves the right to alter specifications and data without prior noti
8. ce A Honeywell Com pany 2009 Copyright Maxon Corporation All rights reserved 3 411 1 8 High temperature burners Sealed Nozzles E i 6 09 Ratio control Air fuel ratio control can be accomplished with MAXON MICRO RATIO valves and SMARTLINK technology Air gas premixing equipment such as a PREMIX Blower Mixer MULTI RATIO Mixer or LG Mixing Tube may be used to provide thorough blending of air gas mixture to MAXON Premix Burners Any reference to a pressure must relate to the effective discharge area through which the volume of gas or air gas premixture is passing When selecting premixing equipment systems the maximum and minimum mixture pressures must be evaluated relative to the quantity and or size of the nozzle s The ratio between these two factors dictates the turndown capabilities of the overall system Multiple nozzle combinations may be considered for a given heat release with a specific premixing device but the total discharge areas of all the multiple nozzles must not exceed the effective discharge area of the specified single nozzle size A minimum differential mixture pressure of 0 25 wc must be maintained to minimize the potential for backfiring Typical ignition sequence Pre purge of burner and installation according to the applicable codes and the installation requirements Combustion air control valve shall be in the minimum position to allow minimum combustion air flow to the burner
9. ion Piping Flexible connections are recommended in all piping to reduce piping stresses and alignment shifting problems Excessive maintenance on the burner blocks and castings is frequently the result of external stresses and strains transmitted to the burner through the piping On large installations consider the use of flexible piping connectors to provide expansion in both length and alignment Installation of such connectors at certain key spots in the air or gas manifolding can prevent damage to the burners from uneven thermal expansion Fuels Sealed Nozzle burners operate on any fuel with heating values over 500 Btu ft Avoid the use of fuels containing hydrogen over 5 by volume Expected emissions Sealed Nozzle burners produce moderate levels of NOx through fuel air premixing With clean utility grade fuels Sealed Nozzles can produce 20 30 less NOx than conventional nozzle mix burners N W WW MAXONCORP COM e COMBUSTION SYSTEMS FOR INDUSTRY MAXON A Honeywell Com pany Maxon reserves the right to alter specifications and data without prior notice 2009 Copyright Maxon Corporation All rights reserved High temperature burners Sealed Nozzles ce yee E i 6 09 Dimensions and weights A A 1 Flame detection port 3 4 NPT bush to 1 4 NPT for flame rod 2 Air gas inlet 3
10. ition Set the correct gas flow for burner minimum capacity before attempt of main burner ignition Verify that the minimum air differential pressure exceeds 0 25 wc to prevent flashback After ignition of the main burner allow some time on minimum capacity to allow the burner parts to heat up slowly Adjust air gas ratio set maximum capacity Once the main flame is ignited adjust air gas ratio of the burner to have the required combustion quality and slowly increase capacity Do not increase capacity too fast to avoid damage to burner parts or furnace due to excessive temperature gradient N W WW MAXONCORP COM e COMBUSTION SYSTEMS FOR INDUSTRY MAXON A Honeywell Com pany Maxon reserves the right to alter specifications and data without prior notice 2009 Copyright Maxon Corporation All rights reserved High temperature burners Sealed Nozzles 3 11 1 17 E i 6 09 Maintenance and inspection Safety requirements Regular inspection testing and recalibration of combustion equipment according to the user manual is an integral part of its safety Inspection activities and frequencies shall be carried out as specified in the user manual Perform the following activities at least annually as part of a recommended preventative maintenance routine E Inspect burner parts for wear and oxidation E Check for nozzle plugging HM Check that required nozzle clearance is maintained E Inspect associated control instr
11. t ing instructions provided by MAXON If any of the instructions provided by MAXON are in conflict with local codes or regulations please contact MAXON before initial start up of equipment Verify that all of the equipment associated with and necessary to the safe operation of the burner system has been installed correctly that all pre commissioning checks have been carried out successfully and i Read the combustion system manual carefully before initiating the start up and adjustment procedure that all safety related aspects of the installation are properly addressed Initial adjustment and light off should be undertaken only by a trained commissioning engineer First firing or restart after shut down During first start up of the burner and after every longer installation shut down the temperature rise shall be limited Allow the burner to fire on low fire for some time to allow the parts to heat up slowly Checks during and after start up During and after start up check the integrity of the system Check all bolted connections after first firing first time on temperature and retighten if necessary Pilot ignition Adjust pilot air flow and pilot gas regulator to correct set point before pilot ignition attempt Turn the adjustable orifice screw out counter clockwise several turns from its fully seated position Refine during lighting of the pilot to a yellow blue flame and or the strongest flame signal Main burner ign
12. take the complete burner weight Installation instructions Storage of Sealed Nozzles Sealed Nozzles shall be stored dry inside Burner blocks have been cured carefully before shipment and shall be kept dry Wetting of the blocks could result in premature failures Handling of Sealed Nozzles Sealed Nozzles are shipped as complete units Handle nozzles with care during unpacking transport lifting and installation Use proper equipment Any impact on the burner could result in damage Flange the burner to the installation Bolt the burner to the installation s burner mounting flange Use proper gasketing Tighten the flange bolting with appropriate torque Retighten all bolts after first firing and regularly after commissioning www e e MAXK ON GOR P GOM 4 COMBUSTION SYSTEMS FOR INDUSTRY MASER Maxon reserves the right to alter specifications and data without prior notice A Honeywell Com pany 2009 Copyright Maxon Corporation All rights reserved 3 11 1 14 E i 6 09 Burner mounting High temperature burners Sealed Nozzles In a refractory wall bolt the burner directly to the furnace shell as shown in Sketch 1 or if there is no shell use angle irons extended between structural supports of the furnace wall as shown in Sketch 2 In either case size the opening in your refractory wall to give a 3 gap around the burner then stuff the gap with castable refractory following manufacturer s instructions Allo
13. the new block which will mate with the burner main body when it is installed Put the main body into position and bolt finger tight Remove any excess refractory cement that is forced out between the body and the burner block Tighten the nozzle body firmly into position and clean the throat with a narrow wet brush to insure a smooth path for air and gas E Allow the re assembled burner to stand at least 48 hours so that refractory cement will set Failure to do so may result in a weak bond and early deterioration E Reinstall the burner following the installation instructions E Dry the refractory thoroughly by running the burner at low fire for at least 15 minutes Reconnect all controls etc restoring the burner to service following manufacturer s instructions 1 Nozzle body 2 Refractory cement seal 3 Burner block 4 Mounting frame 5 Air gas premixture from mixing device wwow enmMAXK ON GOR P CGO M N COMBUSTION SYSTEMS FOR INDUSTRY MAXON Maxon reserves the right to alter specifications and data without prior notice A Honeywell Com pany 2009 Copyright Maxon Corporation All rights reserved 3 11 1 16 High temperature burners Sealed Nozzles E i 6 09 Start up instructions for Sealed Nozzles Instructions provided by the company or individual responsible for the manufacture and or overall installa tion of a complete system incorporating MAXON burners take precedence over the installation and opera
14. uments and devices for function with particular attention to all safety interlocks Visual inspections Regular visual inspection of all connections air and gas mixture piping to the burner fixation of the burner on the installation and burner flame shape and aspect are essential for safe operation Spare parts Keep local stock of spark ignitor and flame detection device It is not recommended to keep local stock of other burner parts Consult user manual for burner spare parts and system accessories www e enMAXK ON GCG ORP COM N COMBUSTION SYSTEMS FOR INDUSTRY MAXON Maxon reserves the right to alter specifications and data without prior notice A Honeywell Com pany 2009 Copyright Maxon Corporation All rights reserved
15. w sufficient dry out time before firing the burner and cure slowly at start up Slotted holes in the burner mounting frame are intended to allow for lateral expansion of the furnace Tighten the burner mounting bolts only enough to hold the burner in position 1 Furnace wall 2 Castable refractory material 3 Pilot 4 Mounting frame 5 Furnace shell 6 Angle iron 6 MAXON A Honeywell Company Sketch 1 pe SRK LP AAA Efese RES SIIS SSIS x a WWW Sketch 2 MAX ON GO R P COMBUSTION SYSTEMS FOR INDUSTRY Cc OM Maxon reserves the right to alter specifications and data without prior notice 2009 Copyright Maxon Corporation All rights reserved High temperature burners Sealed Nozzles 24412415 E i 6 09 Block replacement If the refractory block of your Sealed Nozzle burner requires replacement MAXON can supply replacement block and frame sub assemblies To install a new block and frame assembly E Shut off the system and allow to cool H Disconnect the piping and remove the Sealed Nozzle burner from the installation E Unscrew the bolts which fasten the nozzle body to the mounting frame set aside and remove the burner body tapping lightly if necessary to break bond Clean all old refractory from the main body to insure a proper seal when re assembling Prepare a refractory cement mixture Apply a generous coating of the refractory cement to those surfaces of
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