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Related Manuals for Webster SC Series
Summary of Contents for Webster SC Series
- Page 1 Webster Combustion Technology LLC 619 Industrial Road, Winfield, KS 67156 Installation, Startup, Operation and Maintenance Manual Series Forced Draft Burners Manual Part No. 950108 - R1 www.webstercombustion.com August, 2017 2017 All Rights Reserved...
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Page 2: Safety Precautions
SAFETY PRECAUTIONS Good safety practices must be used when working on burner equipment. The potential energy in the electrical supply, fuel and related equipment must be handled with extreme care to prevent equipment failures, injuries and potential death. Throughout this manual, the following symbols are used to identify potential problems. WARNING This indicates a potential hazardous situation, which if not avoided, could result in personal injury or death. -
Page 3: Table Of Contents
Warranty Validation & Field Start-up Report..................A. INTRODUCTION This manual covers the Model SC burners offered by Figure A-1 Nameplate Webster Combustion Technology LLC. These burners can be used in a wide variety of Cast Iron, Firebox, Firetube, MODEL NUMBER SERIAL NUMBER Flextube and other applications. -
Page 4: Sc Specifications
5. Service, Parts and other Information Service and parts are available from your local Webster Representative. For a list of Webster Representatives, please visit the Webster web site at: www.webster-engineering.com or call 620-221-7464... -
Page 5: Sc Model Configuration
SC BURNER MODEL CONFIGURATION FIGURE A-2 SC12G -50-LMV51-M.25-M-MP-UL/CSD-1 CODES AND BURNER SERIES LISTINGS SC SERIES CSD-1 HEAD SIZE (INCHES) NFPA-85 OIL SYSTEMS Pressure Atomizing 12.3 Modulation By-Pass Modulation Simplex 13.8 Air or Steam Atomization Air Atomization Steam atomizing 15.8 GAS TRAIN VENDOR... -
Page 6: Specification Data
Model SC - Specification Data No. 2 Oil No. 2 Oil STANDARD STANDARD EQUIPMENT Model SC - Specification Data (2,400 MBH - 28,800 MBH Input) EQUIPMENT AND AND IMPORTANT OPTIONS IMPORTANT OPTIONS STANDARD UL EQUIPMENT STANDARD UL EQUIPMENT AND IMPORTANT OPTIONS (1) AND IMPORTANT OPTIONS Motor, Fan and Air Inlet Control Main Manual Shutoff Valve... -
Page 7: Dimensional Data
Model SC - Dimensional Data (Dimensions are +/- 1/4 inch) Fuels Burned and Control Systems - Natural Gas - Light #2 Oil, Mechanical Pressure - Modulating or Micro Modulation - Control Circuit Requires 120 vac, 60 Hz, Single Phase Voltage Supply Model SC burners can be packaged to meet specific requirements of IRI, FM, GE GAP, NFPA, MIL spec. -
Page 8: Component Ldentification
B. COMPONENT IDENTIFICATION This secion shows the different common components used in the SC burner line and should be helpful to identify parts described elsewhere in this manual. Gas Separator Solenoid Valve Oil Pressure Switch Oil Pressure Gauge Oil Lines Secondary Fuel Mod Motor Secondary... - Page 9 UV Sight Port Secondary Gas Orifices Oil Nozzles Primary Gas Orifices Spark Plug Diffuser Assembly Figure B-3 SC Head Control Relays Figure B-4 Control Panel Burner Motor Hard Wired Design Starter Switch / Light Panel BMS Display Burner Management System Terminal Strip Air Chamber Pressure Gauge...
- Page 10 SECONDARY ORIFICE PLATE MOUNTING FLANGE SECONDARY GAS CONNECTION PRIMARY GAS CONNECTION OUTER CYLINDER HOUSING MTG. FLANGE SECONDARY ORIFICE TUBES PRIMARY ORIFICE PLATE GAS TUBE SECONDARY AIR SLOTS IGNITION HOLDER INNER CYLINDER PRIMARY GAS MANIFOLD DIMENSION WILL VARY DEPENDING ON VESSEL INSERTION DEPTH SECONDARY GAS MANIFOLD Gas Orifice Part Number and Description CHECK VALVE...
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Page 11: Installation
22. Is the piping between the gas train and burner done in Important Note: The SC series burners must be a manner that will minimize the pressure drop? operated with a two-pipe system. -
Page 12: Special Lnstructions For Canadian Lnstallations
BURNER VALVE GAS PRESSURE SHUTOFF VALVE SHUTOFF VALVE DRIP LEG REGULATOR IF APPLICABLE, WEBSTER-SUPPLIED GAS TRAIN Chart C-2 Chart C-3 TYPICAL COMBUSTION CHAMBER SIZE TYPICAL COMBUSTION CHAMBER SIZE FOR FIREBOX BOILERS, WATERTUBE & FOR SCOTCH MARINE FIRETUBE BOILERS CAST IRON SECTIONAL TYPES D. -
Page 13: Burner Mounting Criteria
SC18 19.25” 22.50” SC20 21.25” 24.50” SC24 25.25” 28.50” Contact Webster for more detailed Figure E-1 refractory drawings. Refractory Dimension THIS SURFACE MUST FILL VOIDS BETWEEN FRONT BE SEALED AGAINST PLATE AND VESSEL WITH THE VESSEL. CHECK CERAMIC BLANKET 4” DEEP... -
Page 14: Fuel Systems
F. FUEL SYSTEMS The SC burner can be equipped with a wide range of fuel and operating systems to control the fuel, air, modulation and pilots. This section describes how these systems operate. Burner start-up is expected to be done by service per- sonnel who are qualified in the basics of mechanical know-how. - Page 15 2. Air Atomized Oil Systems Safety Air Filter Valve “MA” - Modulating #2 Oil Chamber Ball Valve Air pipe same size (man. set to adjust air as discharge open- Atomizing volume & high fire air ing in air chamber Pressure pressure) Gauge (field Piped)
- Page 16 2. Gas Systems Illustrated Gas Trains by Capacity and Code: The following illustrations show the Webster configuration for UL, FM and IRI as grouped by UL capacity ratings. Refer to the legend below for component part identification. These illustrations are not to be used for field erection and/or system design purposes.
- Page 17 FM Modulation Gas Piping Diagram - 2,500 To 5,000 MBH Firing Rate 722168 UL Modulation Gas Piping Diagram - 5,000 To 12,500 MBH Firing Rate 722169 FM Modulation Gas Piping Diagram - 5,000 To 12,500 MBH Firing Rate 722170 UL Modulation Gas Piping Diagram - Over 12,500 MBH Firing Rate 722171 SC Manual Page 17...
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Page 18: Initial Settings
FM Modulation Gas Piping Diagram - Over 12,500 MBH Firing Rate 722172 G. INITIAL SETTINGS The burner will be set at the factory for normal initial settings. These are only rough settings that must be adjusted at startup to match the furnace, fuel pressure and environment of the specific application. These general settings are covered in this chapter as a means of checking the burner or readjusting the burner if the settings are lost. -
Page 19: Ignition Systems
This section covers the startup and operating adjustments READ AND SAVE THESE INSTRUCTIONS. of the Webster Models. During purge, all solenoids, including the gas separator solenoid valve, are closed and are to remain closed until WARNING called upon. - Page 20 1. Pre-Start Check List b. Disconnect the scanner by screwing it off of the Before starting the burner, a complete review of the scanner tube. In some cases, the scanner simply installation, wiring and piping of the burner, boiler and all pulls out, with a spring tension.
- Page 21 m. Operate the burner until the boiler is warmed up pressure switch, the switch should be adjusted to and near the operating pressure or temperature. a reading of 9 inches. Increase the firing rate. Put the low fire hold switch •...
- Page 22 g. When the prepurge sequence is complete and the 5. Air Atomized, #2 Oil Setup low fire start switch (if used) is made, the pilot valve The air atomized oil system has the potential for a large will open and the pilot flame should be visible turndown range similar to gas and has the potential to be through the burner sight port.
- Page 23 Natural Gas #2 Oil < 9 ppm NOx < 30 ppm NOx % Power Rate Min O Max O Min O Max %O Min O Max %O Figure I-1 13.0 10.0 Typical 11.0 10.0 levels 10.0 10.0 100% l. At high fire (end of the modulating motor travel), 6.
- Page 24 8. Pilot Test j. After the burner has been operating for some time at high input levels and the refractory in the vessel Once the burner has been set for the firing rates is hot, the burner should be cycled off while intended, the pilot must be checked for proper operation monitoring the scanner signal.
- Page 25 FIGURE I-3 Start-Up Sequence For An SC Burner Reset Reset Lock out Lock out SC Manual Page 25 Startup and Operating Adjustments...
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Page 26: Troubleshooting
J. TROUBLESHOOTING System Cause Correction No Ignition Electrode is grounded. Porcelain is cracked. Replace Loose ignition wire connection Reconnect or tighten Defective ignition transformer Check transformer, replace Ignition wire burned Replace ignition wire - increase air No Ignition Lack of fuel, no gas pressure, closed fuel valve Check fuel supply and valves (spark, no flame) No voltage to pilot solenoid... - Page 27 System Cause Correction High CO at low fire (con’t) High stack draft (especially at low fire) Stabilize draft Fluctuating gas pressure (regulator not holding pressure) Check regulator pressure, sensing line and supply pressure: sized properly Gas combustion noise Input too low for burner components Check input, compare to rating label (rumbling) Improper excess air...
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Page 28: General Maintenance And Care
Strainers provided by Webster will use a wire mesh activities. This document can be used to detect any basket inside a canister. After turning the pump off... - Page 29 Check safety limits, including pressure and 7. Ignitor Replacement temperature switches. To remove the ignitor on the SC series from the combustion head start by removing the housing cover 6. Combustion Air Fan plate. Then use a 7/16” crowfoot wrench on a 24” (or...
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Page 30: Care Of Burner During Shutdown
Webster representative when a need arises. N. WARRANTY VALIDATION & FIELD START-UP REPORT As a final step, forward the top copy of the Warranty... - Page 31 Company ___________________________________________ Phone No. ____________________________ Address ___________________________________________________________________________________ NOTE: Warranty Validation - Field Start-up report must be completed, signed, dated and the top copy sent to Webster Combustion, Winfield, KS 67156, to validate equipment warranty. SC Manual Page 31 Warranty Validation - Form #113...
- Page 32 Company’s performance and causes its cost of production to increase because of the delay, the Company may pass such increase on to the Buyer. WEBSTER COMBUSTION TECHNOLOGY 619 Industrial Road - Winfield, KS 67156 Phone 620-221-7464 Fax 620-221-9447 sales@webstercombustion.com service@webstercombustion.com...