UL 462
Standard for Heat Reclaimers for Gas-, Oil-, or Solid Fuel-Fired Appliances

DETAILS
Edition Number:3SCC Approved:--
Edition Date:2010-12-13DOD Approved: --
Price Code:BANSI Approved: --
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover heat reclaimers which are intended to recover a portion of heat from the flue gases of gas-, oil-, or solid fuel-fired appliances for the purpose of heating space or water. They are for installation on the vent or chimney connectors of the appliances which are for attachment to a Type B or Type L vent or a metal or masonary chimney. The heat reclaimers are covered for the maximum flue gas temperature marked on the heat reclaimer, which does not exceed 1000°F (538°C).

    1.2 The heat reclaimers are intended for installation by a qualified agency in accordance with the manufacturer's instructions and the Standard for Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances, NFPA 211 or with the National Fuel Gas Code, NFPA 54/ANSI Z223.1.

    1.3 These heat reclaimers intended for connection to an electrical supply are to be rated 240 volts or less, and are for installation in accordance with the requirements for ordinary locations in the National Electrical Code, NFPA 70.

    1.4 Heat reclaimers which include plumbing connections are to be installed in accordance with the applicable plumbing codes.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Components
          • 3 Units of Measurement
          • 4 Undated References
          • 5 Glossary
        • CONSTRUCTION
          • 6 Components
          • 7 Assembly
          • 8 Materials
          • 9 Electrical Enclosures
            • 9.1 General
            • 9.2 Doors and covers
            • 9.3 Openings
          • 10 Supply Connections
            • 10.1 General
            • 10.2 Leads
            • 10.3 Terminals
            • 10.4 Wiring space
            • 10.5 Power supply cords
          • 11 Current-Carrying Parts
          • 12 Switches and Controllers
          • 13 Mounting of Electrical Components
          • 14 Internal Wiring
            • 14.1 General
            • 14.2 Wiring methods
          • 15 Separation of Circuits
          • 16 Bonding for Grounding
          • 17 Motors and Motor Overcurrent (Overload) Protection
          • 18 Capacitors
          • 19 Insulating Material
          • 20 Electrical Spacings
            • 20.1 General
            • 20.2 High-voltage circuits
            • 20.3 Low-voltage circuits
        • PERFORMANCE
          • 21 General
          • 22 Mounting Positions
          • 23 Test Voltages
          • 24 Input Test
          • 25 Heating Test
            • 25.1 Test installation
            • 25.2 Temperature measurements on other than electrical parts
            • 25.3 Temperature measurement on electrical components
            • 25.4 Test method I (with air or water circulation)
            • 25.5 Test method II (without air or water circulation)
          • 26 Abnormal Heating Test
            • 26.2 Method I (with air or water circulation)
            • 26.3 Method II (without air or water circulation)
          • 27 Operation Test
            • 27.1 Method I (minimum flue gas temperature)
            • 27.2 Method II (maximum water temperature)
          • 28 Draft Loss Test
          • 29 Hydrostatic Strength Test
          • 30 Dielectric Voltage-Withstand Test
          • 31 Leakage Current Test – Cord-Connected Products
          • 32 Stalled Blower Motor Test
        • MANUFACTURING AND PRODUCTION TESTS
          • 33 Production-Line Dielectric Voltage-Withstand Test
        • MARKING
          • 34 General
        • INSTRUCTIONS
          • 35 Installation Instructions
    • APPENDIX A