XPO. Ultra low NOx indirect burner

Transcription

1 XPO Ultra low NOx indirect burner Low temperature burners - XPO burner -.- Low temperature burner for use with clean fuel gases Single digit NOx emissions at 0% High efficiency with low requirements Capacities up to 0 kw with a least : turndown ratio or use in indirect fired solution backed heaters

2 -.- Product description MXON XPO burners are low temperature burners for use in liquid backed applications, including: Water back heater ire tube boiler Thermal oil heater irect contact water heater Solution heating/tanks Snow melters XPO burners provide high efficiency operation with low requirements. They are designed for ease of retrofitting into existing liquid backed applications. XPO burners are available in two basic versions: Packaged (P) with integral combustion blower External blower (E) for use with an external combustion source for extended capacities oth packaged (P) and external blower (E) versions include two different choices for blast tube lengths. 60 mm or 0 mm long blast tube is available. last tube length should be selected based on the wall penetration depth or non-liquid cooled portion of fire tube. The packaged (P) version also includes a choice of blower voltage and a choice of /fuel ratio control actuators. MXON requires the use of parallel positioning control systems. or indoor, general purpose installations, use Honeywell ControLink or equivalent system. or outdoor or hazardous duty service installations, use MXON SMRTLINK MRV control systems. XPO burner with Honeywell ControLink XPO burner with MXON SMRTLINK

3 -.- vailable XPO ultra low NOx burner sizes Packaged (P) versions Typical burner data uel: natural gas at 5 C with 0.9 kwh/nm HHV - sg = 0.6 [] Combustion : 5 C - % O - 50% humidity - sg =.0 [] Stated pressures are indicative. ctual pressures are a function of humidity, altitude, type of fuel and gas quality. XPO P XPO P 5% 0% XPO P XPO P 5% 0% XPO P XPO P 5% 0% XPO P XPO 5 P 5% 0% 5% 0% Maximum burner capacity [] kw Minimum burner capacity [] kw Turndown ratio [] :.: :.6: 5:.5: 5:.5: 6.6: 6: [] sg (specific gravity) = relative density to (density =.9 kg/nm ) [] Minimum burner capacity will be affected by fuel and applications parameters (heat flux). [] Turndown ratio will vary depending on the application heat flux. Lower heat flux (<6 kw/m ) will result with lower turndown ratios. [] Capacity displayed assumes blower operation on 60Hz electrical supply. Gross output will be reduced by 7% if operated on 50Hz. uel and pressure should be reduced by 0% while motor power will reduce 0% with 50Hz operation. Turndown ratio will be reduced in kind with minimum capacity remaining fixed. External blower (E) versions Typical burner data uel: natural gas at 5 C with 0.9 kwh/nm HHV - sg = 0.6 [] Combustion : 5 C - % O - 50% humidity - sg =.0 [] Stated pressures are indicative. ctual pressures are a function of humidity, altitude, type of fuel and gas quality. XPO E XPO 5 E XPO E 5% 0% 5% 0% Maximum burner capacity [] kw Minimum burner capacity [] kw Turndown ratio [] 6: 5.6: 5.9: 5.: [] sg (specific gravity) = relative density to (density =.9 kg/nm ) [] Minimum burner capacity will be affected by fuel and applications parameters (heat flux). [] Turndown ratio will vary depending on the application heat flux. Lower heat flux (<6 kw/m ) will result with lower turndown ratios. [] Capacity displayed assumes blower operation on 60Hz electrical supply. Gross output will be reduced by 7% if operated on 50Hz. uel and pressure should be reduced by 0% while motor power will reduce 0% with 50Hz operation. Turndown ratio will be reduced in kind with minimum capacity remaining fixed.

4 -.- pplications XPO ultra low NOx burners should be used in liquid backed applications, including: Water back heater ire tube boiler Thermal oil heater irect contact water heater Solution heating/tanks Snow melters ) XPO burner ) Mounting flange ) Unit wall ) Liquid solution 5) ire tube 6) urner blast tube 7) Non-cooled fire tube wall 8) Customer-supplied insulation* *ll non-liquid cooled surfaces must be insulated as shown above.

5 -.-5 imensions and weights XPO P (packaged) burners with MXON SMRTLINK actuator C E ) -/ NPT main gas inlet ) ir inlet ) urner blast tube ) 6 mm optional oven wall gasket J H G XPO P (packaged) burners with general purpose actuator (shown with Honeywell ControLinks actuator) C E ) -/ NPT main gas inlet ) ir inlet ) urner blast tube ) 6 mm optional oven wall gasket J H imensions in mm unless stated otherwise urner size C E G H J Weight kg XPO P XPO P

6 -.-6 XPO & P (packaged) burner with MXON SMRTLINK actuator ) -/ NPT main gas inlet ) ir inlet ) urner blast tube ) 6mm optional oven wall gasket H G E C XPO & P (packaged) burners with general purpose actuator (shown with Honeywell ControLinks actuator) ) -/ NPT main gas inlet ) ir inlet ) urner blast tube ) 6mm optional oven wall gasket H G C imensions in mm unless stated otherwise urner size C E G H Weight kg XPO P XPO P XPO P XPO P

7 -.-7 XPO & 5 P (packaged) burner with MXON SMRTLINK actuator C ) NPT main gas inlet ) ir inlet ) urner blast tube ) 6mm optional oven wall gasket E H G XPO & 5 P (packaged) burners with general purpose actuator (shown with Honeywell ControLinks actuator) C ) NPT main gas inlet ) ir inlet ) urner blast tube ) 6mm optional oven wall gasket E H G imensions in mm unless stated otherwise urner size C E G H Weight kg XPO P XPO 5 P

8 -.-8 XPO E (external blower) burner C ) -/ NPT gas inlet ) Combustion inlet ) urner blast tube ) 6 mm optional oven wall gasket E imensions in mm unless specified otherwise urner size C E Weight kg XPO E XPO E XPO 5 E (external blower) burner C ) NPT gas inlet ) Combustion inlet ) urner blast tube ) 6 mm optional oven wall gasket E imensions in mm unless specified otherwise urner size C E Weight kg XPO 5 E Typical emissions XPO burner will achieve ultra low NOx emissions while operating at 0% level. Exact emissions performance may vary in your application. Contact MXON for information on installation specific estimates or guarantees. No guarantee of emissions is intended or implied without specific written guarantee from MXON. Read Specifications of XPO burners for complete information on XPO burners.

9 -.-9 Specifications of XPO ultra low NOx burners Packaged versions (P) Typical burner data uel: natural gas at 5 C with 0.9 kwh/nm HHV - sg = 0.6 [] Combustion : 5 C - % O - 50% humidity - sg =.0 [] Stated pressures are indicative. ctual pressures are a function of humidity, altitude, type of fuel and gas quality. XPO P XPO P 5% 0% XPO P XPO P 5% 0% XPO P XPO P 5% 0% XPO P XPO 5 P 5% 0% 5% 0% Maximum burner capacity [] kw Minimum burner capacity [] kw Turndown ratio [] :.: :.6: 5:.5: 5:.5: 6.6: 6: Maximum flow m /h dvised pilot capacity kw dvised pilot pressure [6] mbar an horsepower last tube O mm ir pressure [5] [6] mbar ir pressure minimum [] [5] mbar Gas pressure [5] [6] mbar ire tube size mm 55 to to to to to 86 (inside diameter) [] sg (specific gravity) = relative density to (density =.9 kg/nm ) [] Minimum burner capacity will be affected by fuel and applications parameters (heat flux). [] Will vary depending on the application heat flux. Lower heat flux (<6 kw/m ) will result with lower turndown ratios and increase in minimum pressure. [] Capacity displayed assumes blower operation on 60Hz electrical supply. Gross output will be reduced by 7% if operated on 50Hz. uel and pressure should be reduced by 0% while motor power will reduce 0% with 50Hz operation. Turndown ratio will be reduced in kind with minimum capacity remaining fixed. [5] Measured as differential to chamber port. [6] Measured with scanner cooling valve closed.

10 -.-0 External blower versions (E) Typical burner data uel: natural gas at 5 C with 0.9 kwh/nm HHV - sg = 0.6 [] Combustion : 5 C - % O - 50% humidity - sg =.0 [] Stated pressures are indicative. ctual pressures are a function of humidity, altitude, type of fuel and gas quality. XPO E XPO E XPO 5 E 5% 0% 5% 0% Maximum burner capacity [] kw Minimum burner capacity [] kw Turndown ratio [] 6: 5.6: 5.9: 5.: Maximum flow m /h dvised pilot capacity kw dvised pilot pressure [6] mbar last tube O mm ir pressure [5] [6] mbar ir pressure minimum [] [5] mbar Gas pressure [5] [6] mbar ire tube size (inside diameter) mm 06 to to 9 [] sg (specific gravity) = relative density to (density =.9 kg/nm ) [] Minimum burner capacity will be affected by fuel and applications parameters (heat flux). [] Will vary depending on the application heat flux. Lower heat flux (<6 kw/m ) will result with lower turndown ratios and increase in minimum pressure. [] Capacity displayed assumes blower operation on 60Hz electrical supply. Gross output will be reduced by 7% if operated on 50Hz. uel and pressure should be reduced by 0% while motor power will reduce 0% with 50Hz operation. Turndown ratio will be reduced in kind with minimum capacity remaining fixed. [5] Measured as differential to chamber port. [6] Measured with scanner cooling valve closed.

11 -.- Materials of construction Item number urner part Material urner housing 00 steel (.) last tube 0 stainless steel (.0) an case 00 steel (.) an impeller (inside fan case) luminum 5 ire tube (customer supplied) Stainless steel (recommended) 6 Insulation (customer supplied) Soft insulation material 090 C temperature rating 7 inch guide tube (customer supplied) Stainless steel (recommended)

12 -.- Selection criteria pplication details XPO burners can be used in all indirect fire tube liquid backed solution heater applications. They combine flexibility and stability with low NOx emissions. Process temperature The XPO burner is engineered for installation in moderate temperature (less than 870 C), liquid backed fire tubes. Protect the burner from high temperatures during a burner stop (purge to avoid back flow of hot process ). Piloting and ignition ll XPO burners are equipped with an independent pilot design. Pilots shall be used only for ignition of the main flame (interrupted). Use of a standing (continuous) pilot is not recommended. Use minimally 5000 V/00 V ignition transformers for sparking of the spark ignitor. Start the burner at low fire setting only. irect spark ignition of standard XPO burners is possible. Locate one pilot gas valve as close as possible to the pilot burner gas inlet to have fast ignition of the pilot burner. Typical ignition sequence Pre-purge of burner and installation, according to the applicable codes and the installation s requirements. Combustion control valve shall be in the minimum position to allow minimum combustion flow to the burner. Pre-ignition (typically seconds sparking in ). Open pilot gas and continue to spark the ignitor (typically 5 seconds). 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 (typically 5 seconds to prove stable pilot). Open main gas valves and allow enough time to have main gas in the burner (typically 5 seconds + time required to have main gas in the burner). Close the pilot gas valves. Release to modulation (allow modulation of the burner). bove sequence shall be completed to include all required safety checks during the start-up of the burner (process and burner safeties). Ratio control ccurate /fuel ratio control can be accomplished with MXON SMRTLINK or Honeywell ControLink actuators. Precise ratio control will yield optimal emissions and efficiency performance. lame supervision XPO burner flames shall be supervised by the use of a UV or IR scanner. Piping ollow all applicable codes including regional codes, local directives, standards and recommendations of your insurance carrier when designing and installing XPO burners. Installation should only be undertaken by qualified gas contractors licensed for any regional or local requirements. Piping weight should be independently supported. o not use the burner as a piping support or hang weight from the burner s flange connections. uels XPO burners are designed for firing of clean fuel gases such as natural gas or LPG.

13 -.- Expected emissions The XPO burner will achieve ultra low NOx emissions while operating at 0% level. The burner provides higher combustion efficiency and lower emissions without the use of expensive GR or exotic/fragile materials. Exact emissions performance may vary in your application. Contact MXON for information on installation-specific estimates and guaranteed values. No guarantee of emissions is intended or implied without specific, written guarantee from MXON. ire tube sizing See the table below for ideal fire tube size. The burner should be sized within the range of the suggested heat flux. or best emission performance, the burner should be fired into a fire tube with the lowest suggested heat flux. Heat flux = urner input / fire tube area urner input kw urner size Heat flux inch 6 inch 8 inch 0 inch inch ire tube size (i) 9 XPO P XPO P XPO P XPO E kw/m XPO P XPO 5 P XPO 5 E inch 6 inch 8 inch 0 inch inch inch 6 inch elow 6 kw/m burner turndown will be limited to < to.

14 -.- imensions XPO P (packaged) burner etail C-C E C etail J X Z Y - - ) Gas pressure test port ) 6 mm optional oven wall gasket ) NPT scanner port coupling ).5 ±.050 ceramic 5) Scanner cooling flex line H 5 G - View - M KØ L NØ PØ Q WØ R U V T S imensions in mm unless stated otherwise urner size C E G H J K Ø L M XPO P XPO P 5 88 urner size N Ø P Ø Q R S T U V W Ø X Y Z XPO P XPO P

15 -.-5 XPO P (packaged) burner View - C K J H G ) Observation window ) Chamber pressure test port ) Scanner cooling valve ) / NPT scanner port 5) Combustion pressure test port 6) / NPT S-O ignition wire connection 7) Main gas inlet -/ NPT 8) /8 NPT pilot gas connection 9) Pilot gas pressure test port L N M View C-C E S T View Z YØ P 7 X W Q U V R 8 9 imensions in mm unless stated otherwise urner size C E G H J K L M N XPO P urner size P Q R S T U V W X Y Ø Z XPO P

16 -.-6 XPO & P (packaged) burner etail C-C ) Gas pressure test port ) 6 mm optional oven wall gasket ) NPT scanner port coupling ).5 ±.050 ceramic 5) Scanner cooling flex line - H JØ G 5 - View - K L MØ NØ C E - CC etail Z P XØ R Q W V S U T YØ imensions in mm unless stated otherwise urner size C E G H J Ø K L M Ø N Ø P XPO P XPO P 6 88 XPO P XPO P 6 80 urner size Q R S T U V W X Ø Y Z CC XPO P XPO P 50

17 -.-7 XPO & P (packaged) burner View - J ) Observation window ) Chamber pressure test port C K H G E ) Scanner cooling valve ) / NPT scanner port 5) Combustion pressure test port 6) / NPT S-O ignition wire connection 7) Main gas inlet -/ NPT View C-C View - 8) /8 NPT pilot gas connection 9) Pilot gas pressure test port P Q N M L 7 W X 5 6 U V Y R S T 8 9 imensions in mm unless stated otherwise urner size C E G H J K L M XPO P XPO P urner size N P Q R S T U V W X Y XPO P XPO P

18 -.-8 XPO & 5 P (packaged) burner C - - E G ) Gas pressure test port H ) 6 mm optional oven wall gasket ) NPT scanner port coupling C-C ) Scanner cooling flex line View - etail JØ K L M Y Z N XØ Q P RØ W U V T S imensions in mm unless stated otherwise urner size C E G H J Ø K L Ø M N XPO P XPO 5 P 76 urner size P Q R Ø S T U V W X Ø Y Z XPO P XPO 5 P

19 -.-9 XPO & 5 P (packaged) burner View - ) Observation window ) Chamber pressure test port ) Scanner cooling valve ) / NPT S-O ignition wire connection 5) /8 NPT pilot gas connection 6) Pilot gas pressure test port 7) NPT scanner port 8) NPT main gas inlet 9) Combustion pressure test port H G L J K View C-C C E T S 9 8 R M P Q P N imensions in mm unless stated otherwise urner size C E G H J XPO P XPO 5 P urner size K L M N P Q R S T XPO P XPO 5 P

20 -.-0 XPO E (external blower) burner etail 6 C ) Gas pressure test port ) 6 mm optional oven wall gasket ) NPT scanner port coupling ).5 ±.050 ceramic 5) Scanner cooling flex line 6) / NPT scanner port - 5 C-C GØ E View - H J K - N etail P Q R L M imensions in mm unless stated otherwise urner size C E G Ø H XPO E XPO E 6 80 urner size J K L M N P Q R XPO E XPO E

21 -.- XPO E (external blower) burner View - ) Observation window ) Chamber pressure test port ) Scanner cooling valve ) Ø 5 mm outside combustion inlet 5) Ø 7 mm inside combustion inlet 6) Combustion pressure test port 7) / NPT scanner port 8) Main gas inlet -/ NPT 9) Pilot gas pressure test port 0) /8 NPT pilot gas connection ) / NPT S-O ignition wire connector 6 E E View C-C C N M 8 7 H G L K J imensions in mm unless stated otherwise urner size C E G XPO E XPO E urner size H J K L M N XPO E XPO E

22 -.- XPO 5 E (external blower) burner etail C 6 M N P Q - - E ) Gas pressure test port ) 6 mm optional oven wall gasket ) Combustion inlet ) NPT scanner port coupling 5) Scanner cooling flex line 6) Chamber pressure test port 5 C-C GØ View - H JØ KØ L imensions in mm unless stated otherwise urner size C E G Ø H XPO 5 E urner size J Ø K Ø L M N P Q XPO 5 E

23 -.- XPO 5 E (external blower) burner View - E ) Observation window ) Chamber pressure test port C G ) Scanner cooling valve ) / NPT S-O ignition wire connector 5) /8 NPT pilot gas connection 6) Pilot gas pressure test port View C-C 7) NPT scanner port 8) Main gas inlet NPT 9) Combustion pressure test port HØ JØ K L MØ NØ P W V U Q T S S R imensions in mm unless stated otherwise urner size C E G H Ø J Ø K L XPO 5 E urner size M Ø N Ø P Q R S T U V W XPO 5 E

24 -.- Spark ignitor pilot tube assembly for sizes XPO, and etail C ) Spark ignitor set-up dimension ) /8 pilot gas tubing C imensions in mm unless stated otherwise urner size XPO P XPO P XPO P XPO E XPO P XPO P XPO P XPO E 5 Spark ignitor pilot tube assembly for sizes XPO & 5 imensions in mm unless stated otherwise urner size XPO P XPO 5 P 75 XPO 5 E

25 -.-5 Intelligent model numbers coded model number is provided on the nameplate of all XPO burners to provide a simple method to identify the configuration of the product. This model number ensures accuracy in identifying your product, ordering replacement parts or communicating capabilities. SIZE MOEL ORER# REG.PT# maxoncorp.com urner series Size lower options last tube length Voltage Control method lame detection ir pressure switch ctuator XPO P N Y Y Mounting flange gasket urner series XPO Size = last tube # = last tube # = last tube # = last tube # 5 = last tube #5 lower options P = packaged burner (blower included) E = external blower (blower not included) last tube length = 60 mm = 0 mm [] Voltage = 0/60//60 = 575//60 [] = 5/0//60 [] * = for external blowers (N/) Control method = SMRTLINK MRV C = Honeywell ControLink * = for external blowers [] Only choice available for size #, # and # blast tubes [] Only available in size # [] Only choice available for size # and #5 blast tubes lame detection = UV scanner w/cooling port ir pressure switch = ntunes H = Honeywell N = None ctuator Y = included with burner N = Not included * = external blowers Mounting flange gasket Y = included with burner N = not included

26 -.-6 Installation and operating instructions for XPO burners pplication requirements View port view port to observe burner flame is helpful to inspect flame aspect. Locate the view port downstream of the flame, looking back to the burner. Make sure the complete flame can be evaluated. Support burner and gas piping The XPO burner shall not be used as support for the piping to the burner. Gas and piping shall be supported in such a way that no additional loads will be created on the burner. urner mounting flange loads Check burner weight and reinforce burner mounting flange or combustion chamber/furnace back wall if necessary to take complete burner weight.

27 -.-7 Installation instructions Storage of XPO burners XPO burners shall be stored dry (inside). Handling of XPO burners Handle burners with care during unpacking, transport, lifting and installation. Use proper equipment. ny impact on the burner could result in damage. Packaged burners will be shipped with blowers, blast tubes and fuel valves removed. urner requires assembly prior to installation. The following components will be included in the shipping carton: Housing and manifold assembly lower and valve assembly (packaged versions only) uel valve assembly last tube assembly Scanner cooling flex hose ssemble burner components using the diagrams on the following pages as a guide.

28 -.-8 E ) last tube (insulation not shown) ) Chamber pressure test connection ) Scanner cooling valve ) ttach swivel end of flex hose to scanner cooling valve 5) ttach fixed end of flex hose to combustion pressure connection 6) Impeller rotation 7) Combustion test connection 8) Main fuel inlet 9) Ignition wire S-O cord connector 0) Pilot gas inlet ) Pilot gas test connection ) Customer-supplied scanner tube 5 C Insulate and install blast tube assembly () according to catalog instructions. ttach housing and manifold assembly () to blast tube assembly (). Pipe fuel line and control valve to burner assembly. Pipe pilot gas line and connect ignition wire to manifold assembly (). Connect cooling flex hose (C) from housing () to blast tube s scanner cooling valve. ttach blower and valve assembly () for packaged burners or E adapter for external blower. Install ignitor (E) and pilot gas line () according to the instructions on the following page.

29 -.-9 etail ) /8 flat washer ) /8 split lock washer ) /8-6 nut ) Pilot gas tube nut 5) /8-6 nut 6) /8 split lock washer 7) /8 flat washer 8) Pilot gas tubing 9) Ignitor 0) Two 0- ignitor screws ) Spark ignitor bracket ) 0- acorn nut etail - Sizes XPO - etail - Sizes XPO & or Sizes XPO -: Insert spark ignitor into blast tube s ignitor tube. (Mixing disc and tripod assembly inside manifold may need to be rotated for clearance.) Connect pilot tube to manifold. Confirm spark ignitor set-up dimension as shown in catalog literature. Tighten all hardware, noting that O-ring must be present between nut and ceramic and the spark ignitor nut needs only be hand tight plus / turn to prevent cracking ceramic. Connect ignition wire to spark ignitor. or Sizes XPO & 5: Remove acorn nut from mixing disc portion of manifold assembly. Slide pilot gas tube ring over blast tube s ignitor tube. Connect pilot tubing to manifold. Insert spark ignitor into blast tube ignitor tube and shoulder spark ignitor into blast tube disc. ttach spark ignitor bracket using acorn nut previously removed. Tighten the two ignitor bracket screws. Tighten all hardware. Connect ignition wire to spark ignitor.

30 -.-0 lange the burner to the installation olt the burner to the installation s burner mounting flange. Use proper gasketing. Tighten the flange bolting with correct torque. Retighten all bolts after first firing and regularly after commissioning. ll non-liquid cooled surfaces must be insulated as shown in burner mounting diagram. rea(s) between fire tube wall and outside of burner blast tube must be completely filled with insulation as shown below. Customer-supplied scanner tube must not extend beyond the blast tube insulation. urner mounting Correct installation last tube is completely insulated beyond point where fire tube is solution backed. Minimum of insulation into liquid. Incorrect application/installation last tube cannot be completely insulated due to protrusion length of fire tube out of solution. ) last tube ) Liquid solution ) ire tube ) 5 mm gap required from insulation to slots 5) Customer-supplied scanner tube 6) Customer-supplied insulation ollow all applicable codes including regional codes, local directives, standards and recommendations of your insurance carrier when designing and installing XPO burners. Installation should only be undertaken by qualified gas contractors licensed for any regional or local requirements. Piping weight should be independently supported. o not use the burner as a piping support or hang weight from the burner s flange connections. XPO burners should be used in liquid backed applications. ll non-liquid cooled surfaces must be insulated as shown above. oth packaged (P) and external blower (E) versions include two different choices for blast tube length. 60 mm or 0 mm long blast tube is available. last tube length should be selected based on the wall penetration depth or non-liquid cooled portion of fire tube.

31 -.- Start-up instructions for XPO burners Instructions provided by the company or individual responsible for the manufacture and/or overall installation of a complete system incorporating MXON burners take precedence over the installation and operating instructions provided by MXON. If any of the instructions provided by MXON are in conflict with local codes or regulations, please contact MXON before initial start-up of equipment. Read the combustion system manual carefully before initiating the start-up and adjustment procedure. 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 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. o not operate the burner without the burner cover and observation window securely attached and sealed to the burner housing. Checks during and after start-up uring 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 efore ignition of the pilot, adjust the combustion to the minimum burner flow. Pilot will not ignite if too high an flow exists. Set pilot gas flow to the correct value before pilot ignition attempt. Main burner ignition Set correct gas flow for burner minimum capacity before attempt of main burner ignition. fter ignition of main burner, allow some time on minimum capacity to allow the burner parts to heat up slowly. djust /gas ratio, set maximum capacity Once the main flame is ignited, adjust /gas ratio of the burner to have the required combustion quality and slowly increase capacity. o not increase capacity too fast to avoid damage to burner parts or furnace due to ive temperature gradient.

32 -.- Maintenance and inspection instructions Safety requirements Regular inspection, testing and recalibration of combustion equipment according to the installation manual is an integral part of its safety. Inspection activities and frequencies shall be carried out as specified in the installation manual. Visual inspections Regular visual inspection of all connections ( and gas piping to the burner, bolting of the burner to the furnace) and burner flame size and aspect are essential. Spare parts Keep local stock of spark ignitor. It is not recommended to keep local stock of other burner parts. Consult installation manual for burner spare parts and system accessories.