• UL 641 : 8

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    Standard for Type L Low-Temperature Venting Systems

    Available format(s):  Hardcopy

    Language(s): 

    Published date:  12-13-2010

    Publisher:  Underwriters Laboratories

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    INTRODUCTION
    1. Scope
    2. Units of Measurement
    3. Components
    4. Glossary
    CONSTRUCTION
    5. Materials
    6. Assembly
    7. Caps
    8. Firestop-Spacers
    9. Fittings
    10. Joints
    11. Radiation Shields
    12. Roof Assemblies
    13. Roof Jacks
    14. Sizes
    15. Support Assembly
    PERFORMANCE
    16. General
    17. Test Installation
    18. Temperature Measurement
    19. Temperature Test - 570 deg F (299 deg C) Flue Gases
    20. Temperature Test - 1700 deg F (927 deg C) Flue Gases
    21. Draft Loss Test
    22. Support Test
    23. Strength Test
    24. Wind Load Test
    25. Rain Test
    26. Crushing Test of Nonmetallic Flue-Gas Conduit
    27. Resistance to Action of Acids Test of Nonmetallic
         Flue-Gas Conduit
    28. Freezing and Thawing Test of Water-Absorptive
         Nonmetallic Materials
    29. Cemented Joint Test of Flue-Gas Conduit
    30. Sulfuric Acid Extraction Test for Porcelain-Coated
         Steel Used for Flue-Gas Conduit
    MARKING AND INSTRUCTION
    31. Marking
    32. Instructions

    Abstract - (Show below) - (Hide below)

    This revision of ANSI/UL 641 is being issued to reaffirm approval as an American National Standard.

    Scope - (Show below) - (Hide below)

    These requirements cover factory-built vent piping and fittings constructed to provide venting systems for use with gas and liquid fuel-burning appliances that exhaust low-temperature flue gases and that are approved for use with Type L venting systems.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher Underwriters Laboratories
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    ASTM E 1509 : 2012 : R2017 Standard Specification for Room Heaters, Pellet Fuel-Burning Type
    ICC 2012 INTERNATIONAL BUILDING CODE : 2012 INTERNATIONAL BUILDING CODE
    NFPA 54 : 2018 NATIONAL FUEL GAS CODE
    ICC IBC CODE AND COMMENTARY VOLUME 2 : 2015 IBC® Code and Commentary, Volume 2
    ICC IRC CODE AND COMMENTARY VOLUME 2 : 2015 IRC® Code and Commentary, Volume 2
    ICC IFGC CODE AND COMMENTARY : 2015 IFGC® Code and Commentary
    ICC IMC Code and Commentary : 2015 IMC® Code and Commentary
    ASTM E 1509 : 2012 Standard Specification for Room Heaters, Pellet Fuel-Burning Type
    ICC 2012 INTERNATIONAL FUEL GAS CODE : 2012 INTERNATIONAL FUEL GAS CODE
    ICC 2012 INTERNATIONAL RESI. CODE : 2012 INTERNATIONAL RESIDENTIAL CODE FOR ONE- AND TWO-FAMILY DWELLINGS
    NFPA 54 HDBK : 2018 NATIONAL FUEL GAS CODE HANDBOOK
    ICC 2009 INT. RESI.CODE & COMM.-I1 : 2009 2009 INTERNATIONAL RESIDENTIAL CODE & COMMENTARY - VOLUME 2: CHAPTERS 12 TO 44
    ICC 2012 INTERNATIONAL MECH. CODE : 2012 INTERNATIONAL MECHANICAL CODE

    Standards Referencing This Book - (Show below) - (Hide below)

    UL 125 : 9 FLOW CONTROL VALVES FOR ANHYDROUS AMMONIA AND LP-GAS
    UL 132 : 8 SAFETY RELIEF VALVES FOR ANHYDROUS AMMONIA AND LP-GAS
    UL 144 : 8 LP-GAS REGULATORS
    UL 565 : 6 LIQUID-LEVEL GAUGES FOR ANHYDROUS AMMONIA AND LP-GAS
    UL 569 : 8 PIGTAILS AND FLEXIBLE HOSE CONNECTORS FOR LP-GAS
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