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Eclipse ThermJet TJ0015 Design Manual

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Design Guide 205
3/5/07
Eclipse ThermJet
Burners
Models TJ0015 – TJ2000
Version 2

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Summary of Contents for Eclipse ThermJet TJ0015

  • Page 1 Design Guide 205 3/5/07 Eclipse ThermJet Burners Models TJ0015 – TJ2000 Version 2...
  • Page 2 Eclipse will not be liable for any other injury, loss, damage or expenses, whether direct or consequential, including but not limited to loss of use, income, or damage to material arising in connection with the sale, installation, use of, inability to use, or the repair or replacement of Eclipse’s products.
  • Page 3 Eclipse bulletins and Info Guides: 610, 710, 720, 730, 742, 744, 760, 930 Purpose The purpose of this manual is to make sure that the design of a safe, effective and trouble-free combustion system is carried out. Eclipse ThermJet Design Guide No. 205, 3/5/07...
  • Page 4 Note: Indicates an important part of the text. Read thoroughly. If you need help, contact your local Eclipse representative. oW to can also contact Eclipse at: 1665 Elmwood Rd.

  • Page 5: Table Of Contents

    Table 3.2: Fuel gas heating values ........... Example blower calculation ............. Step 6: Main gas shut-off valve train ..........Step 7: Process Temperature Control System ......Appendix Conversion Factors ................Key to System Schematics ............... Eclipse ThermJet Design Guide No. 205, 3/5/07...

  • Page 6: Introduction

    High Velocity (HV) • Medium Velocity (MV) The gas velocity can be as high as 500 ft/s for the High Velocity burner, and 250 ft/s for the Medium Velocity burner. Figure 1.1 The ThermJet Burner Eclipse ThermJet Design Guide No. 205, 3/5/07...

  • Page 7: Safety

    Important notices about safe burner operation will be found in this section. Read this entire manual before attempting to start the system. If any part of the information in this manual is not understood, then contact your local Eclipse representative or Eclipse, Inc. before continuing. Danger:...

  • Page 8: Capabilities

    Regular retraining must be scheduled to maintain a high degree of proficiency. Order replacement parts from Eclipse only. Any customer-sup- eplaCemeNt arts plied valves or switches should carry UL, FM, CSA,CGA and/or CE approval where applicable.

  • Page 9: System Design

    Each burner size comes in two versions, High or Medium Velocity. Select the version needed based on requirements for temperature uniformity, circulation, chamber size, air pressure and overall operating costs. Flame velocity information is available in Data Sheets 205-1 through 205-13 Eclipse ThermJet Design Guide No. 205, 3/5/07...

  • Page 10: Step 2: Control Methodology

    Use of different control methods will result in unknown operational performance characteristics. Use the control circuits contained within this section or contact Eclipse Combustion for written, approved alternatives. Eclipse ThermJet Design Guide No. 205, 3/5/07...
  • Page 11 All ThermJet control schematics on the following pages reflect a single gas automatic shut-off valve. This may be changed to conform to local safety and/or insur- ance requirements (Refer to page 9 of ThermJet Installation Guide No. 205). Eclipse ThermJet Design Guide No. 205, 3/5/07...

  • Page 12: On-Ratio Control Or Excess Air @ Low Fire

    Burners Single burner ➊ ➋ Main gas shut-off ➌ valve train Optional IF flame monitoring system controls the main gas shut-off valve train AND ignition above 40% of maximum is NOT required. Eclipse ThermJet Design Guide No. 205, 3/5/07...
  • Page 13 Burners Single burner ➊ ➋ (optional) Main gas shut-off valve train Optional IF flame monitoring system controls the main gas shut-off valve train AND ignition above 40% of maximum is NOT required. Eclipse ThermJet Design Guide No. 205, 3/5/07...
  • Page 14 Burners ➌ Single burner ➍ ➎ ➊ Main gas shut-off ➋ valve train ➌ If fast high/low control is not necessary, the CRS valve can be replaced with a two-position automatic butterfly valve. Eclipse ThermJet Design Guide No. 205, 3/5/07...
  • Page 15 Automatic shut-off by zone Automatic shut-off by zone ➊ to other Zones Main gas shut-off ➋ valve train to other Burners ➌ Single burner ➊ Main gas shut-off valve train ➋ (optional) ➌ Eclipse ThermJet Design Guide No. 205, 3/5/07...

  • Page 16: Step 3: Ignition System

    Under these circumstances you must consider the following options: • Start at higher input levels. • Resize and/or relocate the gas controls. • Use bypass start gas. (See the circuit schematics on the next page.) Eclipse ThermJet Design Guide No. 205, 3/5/07...
  • Page 17 Modulating gas with fixed air control Main gas shut-off valve train Bypass option High/low air & gas control Main gas shut-off valve train Bypass option High/Low gas with fixed air control Main gas shut-off valve train Bypass option Eclipse ThermJet Design Guide No. 205, 3/5/07...
  • Page 18 Other manufacturers’ flame monitoring systems can be used with the burner if spark is maintained for a fixed time interval and is not interrupted when a flame signal is detected during trial for ignition. Eclipse ThermJet Design Guide No. 205, 3/5/07...

  • Page 19: Step 5: Combustion Air System: Blower And Air Pressure Switch

    The density of the air decreases, and as a result, the outlet pressure and the flow of the blower decrease. An accurate de- scription of these effects is in the Eclipse Combustion Engineer- ing Guide (EFE 825). The Guide contains tables to calculate the effect of pressure, altitude and temperature on air.
  • Page 20 Air/gas ratio (fuel specific, see table below) scfh Air flow scfh Gas flow Table 3.2: Fuel gas heating values toiChiometriC ross atio alue a (ft Natural gas 9.41 1,002 (Birmingham, AL) Propane 23.82 2,572 Butane 30.47 3,225 Eclipse ThermJet Design Guide No. 205, 3/5/07...

  • Page 21: Example Blower Calculation

    With the output pressure and the specific flow, you can find the blower catalog number and the motor hp in Bulletin / Info Guide 610. Eclipse Combustion recommends that you select a Totally Enclosed Fan Cooled (TEFC) motor. Select the other parameters: •...

  • Page 22: Step 6: Main Gas Shut-Off Valve Train

    Main gas shut-off Consult Eclipse valve train Eclipse can help you design and obtain a main gas shut-off valve train that complies with the current safety standards. The shut-off valve train must comply with all the local safety standards set by the authorities that have jurisdiction.

  • Page 23: Appendix

    Fahrenheit (°F) degrees Celsius (°C) foot (ft) meter (m) 0.3048 inches (in) millimeter (mm) 25.4 inches water column (“wc) millibar (mbar) 2.49 pound (lb) kilogram (kg) 0.454 pounds/sq in (psi) millibar (mbar) 68.95 Eclipse ThermJet Design Guide No. 205, 3/5/07...

  • Page 24: Key To System Schematics

    Automatic butter y valve Automatic butter y valves are typically used to set the output of the system. Eclipse ThermJet Design Guide No. 205, 3/5/07...
  • Page 25 The schematics show the Pressure taps advised positions of the pressure taps. The impulse line connects Impulse line the ratios regulator to the air supply line. Eclipse ThermJet Design Guide No. 205, 3/5/07...
  • Page 26 Offered By: Power Equipment Company 2011 Williamsburg Road Richmond, VA 23231 Phone: 804-236-3800 Fax: 804-236-3882 www.peconet.com...

This manual is also suitable for:

Thermjet tj2000

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