UL 2096
Standard for Commercial/Industrial Gas and/or Oil-Burning Assemblies With Emission Reduction Equipment

DETAILS
Edition Number:3SCC Approved:--
Edition Date:2006-10-27DOD Approved: --
Price Code:AANSI Approved: --
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover fuel burning heating appliances that are provided with or are intended for installation with NOx emissions reduction equipment.

    1.2 These requirements apply to factory-built equipment having inputs of more than 400,000 Btu per hour (117 KW) (firing gas), and/or more than 3.0 gph (11.4 L/h) (firing oil), per individual combustion chamber and/or oil or combination gas-oil burning equipment which require flame failure and other safeguards and which are intended primarily for commercial and industrial installation.

    1.3 Equipment covered by these requirements may be operated without a competent attendant being constantly on duty at the burners while the burners are in operation.

    1.4 The heating appliance shall be suitable for installation in accordance with the National Fire Protection Association Standards for the Installation of Oil-Burning Equipment (National Fire Codes, Vol. 1), ANSI/NFPA 31, and/or National Fuel Gas Codes (IAS/A.G.A. Z223.1-1996), NFPA 54 and the National Electrical Code, NFPA 70.

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • PART I – ALL EQUIPMENT
          • INTRODUCTION
          • 1 Scope
          • 2 Units of Measurement
          • 3 Components
          • 4 Glossary
          • 5 Undated References
          • CONSTRUCTION
          • 6 General
          • 7 Corrosion Protection
          • 8 Protection of Users and Service Personnel
          • 9 Enclosures
            • 9.1 General
            • 9.2 Accessibility of uninsulated live parts and film-coated wire – general
            • 9.3 Doors and covers
            • 9.4 Field wiring system connection
          • 10 Field Wiring
            • 10.1 General
            • 10.2 Leads and terminals
          • 11 Internal Wiring
            • 11.1 General
            • 11.2 Methods
            • 11.3 Short-circuit protection
          • 12 Separation of Circuits
          • ELECTRICAL COMPONENTS
          • 13 Bonding for Grounding
          • 14 Mounting of Electrical Components
          • 15 Motors and Motor Overload Protection
          • 16 Overcurrent Protection of High-Voltage Control-Circuit Conductors
            • 16.1 General
            • 16.2 Direct-connected high-voltage control circuit
            • 16.3 Tapped high-voltage control circuits
            • 16.4 Overcurrent-protective devices
          • 17 Overcurrent Protection of Transformers
            • 17.1 High-voltage transformers – general
            • 17.2 High-voltage transformers– thermal protection
            • 17.3 High-voltage transformers– overcurrent protection
            • 17.4 Low-voltage transformers – general
            • 17.5 Low-voltage transformers– overcurrent protective devices
          • 18 Switches and Controllers
          • 19 Capacitors
          • 20 Electrical Insulating Materials
          • SPACINGS
          • 21 High-Voltage Circuits
          • 22 Low-Voltage Circuits
          • PERFORMANCE
          • 23 General
          • 24 Instrumentation
            • 24.1 Draft
            • 24.2 Fuel input
            • 24.3 Power measurement
            • 24.4 Speed measurement
            • 24.5 Temperature measurement
            • 24.6 Flue-gas sampling and temperatures
          • 25 Test Voltage
          • 26 Power Input Test
          • 27 Temperature Test
          • 28 Short-Circuit Test
          • 29 Overload Test, High-Voltage Transformers
          • 30 Burnout Test, High-Voltage Transformers
          • 31 Dielectric Voltage-Withstand Test
            • 31.1 General
            • 31.2 Dielectric withstand – Ignition assembly
            • 31.3 Dielectric withstand – Electrode insulator
          • MANUFACTURING AND PRODUCTION TESTS
          • 32 General
          • 33 Production Line Dielectric Voltage-Withstand Test
          • MARKING
          • 34 General
          • 35 Nameplate
          • 36 Supplemental Marking
          • INSTRUCTIONS
          • 37 General
        • PART II - BURNER ASSEMBLIES
          • CONSTRUCTION
          • 38 General
          • 39 Assembly
          • 40 Accessibility for Servicing
          • 41 Fan Housings and Air Tubes
          • 42 Combustion Air Controls
          • 43 Fuel Strainers
          • 44 Fittings, and Piping and Tubing
          • 45 Valves and Regulators
            • 45.1 Automatic safety shutoff valves – General
            • 45.2 Oil valves
            • 45.3 Gas valves
            • 45.3A Automatic valve proving systems
            • 45.4 Manually operated valves – Oil
            • 45.5 Manually operated valves – Gas
            • 45.6 Pressure regulators – Oil
            • 45.7 Pressure regulators – Gas
          • 46 Stuffing Boxes
          • 47 Bleeds and Vents
          • 48 Gauges
          • 49 Ignition Systems – General
          • 50 Oil-Burning Devices
          • 51 Gas-Burning Devices
          • 52 Electric High-Tension Ignition
            • 52.1 Spark igniters
            • 52.2 Electrode and bus bars
            • 52.3 Insulators
            • 52.4 Leads
            • 52.5 Transformers
          • 53 Gas Pilots
          • 54 Control Applications
          • 55 Primary Safety Controls
          • 56 Purge and Combustion Air Monitoring Controls
            • 56.1 General
            • 56.2 Controls for oil burning assemblies
          • 57 Oil Atomization Control
          • 58 Oil Temperature Control
          • 59 Gas Pressure Controls
          • 60 Interlocks
          • 61 Combination Gas-Oil Burners
          • PERFORMANCE
          • 62 Test Installation
          • 63 Tests Firing Oil
            • 63.1 Combustion – Test No. 1
            • 63.2 Mechanical-atomizing burners – Test No. 2
            • 63.3 Combustion air failure test – Test No. 3
            • 63.4 FGR fan failure test – Test No. 4
            • 63.5 Interruption of atomization test – Test No. 5
            • 63.6 Undervoltage test – Test No. 6
            • 63.7 Power interruption test – Test No. 7
            • 63.8 Ignition tests, electric high-tension reduced voltage – cold oil – Test No. 8
            • 63.9 Combustion detectors – Test No. 9
            • 63.10 Ignition test, gas reduced voltage – Test No. 10
            • 63.11 Pilot supervision – Test No. 11
            • 63.12 Flame failure response – Test No. 12
            • 63.13 Pilot stability – Test No. 13
            • 63.14 Ignition test, gas-electric – Test No. 14
            • 63.15 Ignition test, gas-electric high-tension reduced voltage – cold oil – Test No. 15
            • 63.16 Ignition test, multiple-atomizer burner – Test No. 16
            • 63.17 Fuel changeover test – Test No. 17
          • 64 Tests Firing Gas
            • 64.1 Combustion – Test No. 1
            • 64.2 Endurance – Test No. 2
            • 64.3 Combustion air failure – Test No. 3
            • 64.4 FGR fan failure test – Test No. 4
            • 64.5 Undervoltage – Test No. 5
            • 64.6 Power interruption – Test No. 6
            • 64.7 Pilot supervision – Test No. 7
            • 64.8 Ignition, gas-electric high tension – Test No. 8
            • 64.9 Ignition, multiple burner – Test No. 9
            • 64.10 Delayed ignition – Test No. 10
        • PART III – BOILER ASSEMBLIES
          • CONSTRUCTION
          • 65 Assembly
          • 66 Accessibility for Servicing
          • 67 Casing
          • 68 Radiation Shields or Liners
          • 69 Combustion Chamber
          • 70 Baffles
          • 71 Flue Collar
          • 72 Flue Dampers, Draft Regulator, and Draft Hoods
          • 73 Controls
            • 73.1 Application
            • 73.2 Operating controls
            • 73.3 Limit controls
            • 73.4 Primary safety control
            • 73.5 Liquid level limit controls
            • 73.6 Pressure limit controls
            • 73.7 Temperature limit controls
            • 73.8 Safety shut-off valves
          • 74 Installation of External Controls and Fittings
          • PERFORMANCE
          • 75 General
          • 76 Test Installation for Standard Clearances
            • 76.1 Enclosure
            • 76.2 Chimney connector
          • 77 Initial Test Conditions
          • 78 Combustion – Test No. 1
          • 79 Limit Control Cutout – Test No. 2
          • 80 Continuous Operation Temperatures– Test No. 3
          • 81 Low Water Cutoff – Test No. 4
        • PART IV – FURNACES AND HEATERS
          • CONSTRUCTION
          • 82 Assembly
          • 83 Accessibility
          • 84 Air Filters
          • 85 Baffles
          • 86 Burner Equipment
          • 87 Controls
            • 87.1 General
            • 87.2 Limit Controls
          • 88 Bases
          • 89 Heating Surfaces and Combustion Chambers
          • 90 Radiation Shields
          • 91 Materials in Air Handling Compartments
          • 92 Casings
          • 93 Fuel Lines and Components
          • 94 Flue Collars
          • 95 Flue Dampers, Draft Regulators, and Draft Hoods
          • PERFORMANCE
          • 96 General
          • 97 Test Installations
            • 97.1 Floor-mounted devices
            • 97.2 Suspended furnaces
            • 97.3 Unit heaters
            • 97.4 Test ducts for furnaces
          • 98 Initial Test Conditions
            • 98.1 General
            • 98.2 Air temperatures in ducts
            • 98.3 Ambient temperatures
            • 98.4 Static pressure
          • 99 Combustion Test – Test No. 1
          • 100 Limit Control Cutout – Test No. 2
          • 101 Continuity of Operation – Test No. 3
          • 102 Airflow Test – Downflow and Horizontal Furnaces – Test No. 4
          • 103 Temperature Tests – General
          • 104 Continuous Operation – Test No. 5
          • 105 Blocked Inlet – Test No. 6
          • 106 Fan Failure – Test No. 7
          • 107 Blocked Outlet – Test No. 8
          • 108 Stalled Fan Motor Test
        • PART V – DRAFT HOOD EQUIPPED DEVICES
          • PERFORMANCE
          • 109 Blocked Outlet – Test No. 1
          • 110 Downdrafts and Updrafts – Test No. 2
          • 111 Spillage – Test No. 3
          • 112 Draft Hood Strength – Test No. 4
        • PART VI – OUTDOOR-USE EQUIPMENT
          • CONSTRUCTION
          • 113 General
          • 114 Enclosures
          • 115 Field Wiring Connections
          • 116 Wiring
          • 117 Electrical Insulation Material
          • 118 Water Spray Test – Test No. 1
          • 119 Wind Tests – Test No. 2
          • 120 Accelerated Aging Test – Gaskets, Adhesives, and Sealing Compounds – Test No. 3
          • 121 Metallic Coating Thickness Test – Chromic Acid Dropping Test – Test No. 4
          • 122 Marking
    • APPENDIX A