• UL 727:10ED 2018-01

    Current The latest, up-to-date edition.

    Standard for Oil-Fired Central Furnaces

    Available format(s):  Hardcopy

    Language(s):  English

    Published date:  31-01-2018

    Publisher:  Underwriters Laboratories

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

    FOREWORD
    PART 1 - ALL PRODUCTS
    Introduction
    1 Scope
    2 Units of measurement
    3 Glossary
    4 Components
    Construction - mechanical
    5 Assembly
    6 Servicing
    7 Disposal of combustion products
    8 Base
    9 Casings
    10 Radiation shields or liners
    11 Materials in air handling compartments
    12 Air filters
    13 Combustion chambers
    14 Radiators
    15 Heating surface joints
    16 Baffles
    17 Flue collars
    18 Dampers and draft regulators
    Construction - electrical
    19 Controls
    20 Field wiring
    21 Internal wiring
    22 Separation of circuits
    23 Bonding for grounding
    24 Servicing and adjustments
    25 Electrical components
    26 Mounting of electrical components
    27 Electrical enclosures
    28 Motors and motor overload protection
    29 Overcurrent protection of high-voltage control-
        circuit conductors
    30 Overcurrent protection of transformers
    31 Switches and controllers
    32 Capacitors
    33 Electrical insulating material
    34 Spacings - high-voltage circuit
    35 Spacings - low-voltage circuit
    36 Accessibility of uninsulated live parts
    Performance
    37 General
    38 Test installation for standard clearances
    39 Test installation for alcove or closet
    40 Instrumentation
    41 Initial test conditions
    42 Combustion test - burner and furnace
    43 Operation tests
    44 Limit control cutout test
    45 Continuity of operation test
    46 Airflow, downflow or horizontal furnace test
    47 Temperature tests
    48 Continuous operation test
    49 Blocked inlet test
    50 Fan failure test
    51 Stalled fan motor test
    52 Blocked outlet test
    53 Short-circuit test
    54 Overload test, high-voltage transformers
    55 Burnout test, high-voltage transformers
    56 Dielectric voltage-withstand test
    57 Flammability test
    Manufacturing and production tests
    58 General
    59 Production line dielectric voltage-withstand test
    Marking
    60 General
    Instructions
    61 Operating and installation instructions
    PART 2 - OUTDOOR-USE EQUIPMENT
    Construction
    62 General
    63 Enclosure
    64 Field-wiring connections
    65 Internal wiring
    66 Electrical insulating material
    Performance
    67 Rain test
    68 Wind test
    69 Accelerated aging test - gaskets, adhesives, and
        sealing compounds
    70 Metallic coating thickness test
    Marking
    71 General
    Appendix
    A Standards for components

    Abstract - (Show below) - (Hide below)

    This New Edition of UL 727 is being issued to address the editorial maintenance of UL Standards for Safety.

    Scope - (Show below) - (Hide below)

    These requirements cover oil-fired central furnaces which include forced-air furnaces of the downflow, horizontal, and upflow types.

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

    Document Type Standard
    Publisher Underwriters Laboratories
    Status Current

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

    UL 514A:11ED 2013-02 Metallic Outlet Boxes
    UL 506:14ED 2017-06 Specialty Transformers
    UL 343:9ED 2008-12 Pumps for Oil-Burning Appliances
    UL 83:16ED 2017-07 Standard for Thermoplastic-Insulated Wires and Cables
    UL 6 : 2014 ELECTRICAL RIGID METAL CONDUIT - STEEL
    UL 372:6ED 2007-07 Automatic Electrical Controls for Household and Similar Use - Part 2: Particular Requirements for Burner Ignition Systems and Components
    UL 746A:6ED 2012-09 Polymeric Materials - Short Term Property Evaluations
    UL 429:7ED 2013-11 Electrically Operated Valves
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