UL 705
Standard for Safety for Power Ventilators

DETAILS
Edition Number:7SCC Approved:--
Edition Date:2017-07-19DOD Approved: 1993-02-05
Price Code:BANSI Approved: 2019-08-30
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover power ventilators of the roof-and wall-mounted types and duct fans of the straight-through type intended for commercial or industrial use, residential fans intended for heated and conditioned air and for connection to permanently installed wiring systems in accordance with the National Electrical Code, NFPA 70.

    1.2 These requirements also cover dryer exhaust duct power ventilators (DEDPV) for single residential dryers.

    1.2.1 These requirements cover roof or wall-mounted ventilators and duct fans of the straight-through type for restaurant exhaust appliances.

    1.2.2 These requirements cover power ventilators for restaurant exhaust appliances.

    1.3 These requirements do not cover the following:

    a)    Ventilating equipment such as attic, wall-insert, ceiling-insert, household hood, window fans, or canopy fans or blowers;

    b)    Air-moving equipment with integral air-tempering means;

    c)    Dryer type fans used for drying carpets or floors;

    d)    Household and commercial blower inflator type fans;

    e)    Evaporative coolers; Evaporative cooler pumps, including retrofit pumps;

    f)    Air filtering appliances;

    g)    Deodorizers and air fresheners;

    h)    Component fans;

    i)    Low voltage component fans;

    j)    Fans and blowers that circulate air, such as desk, ceiling-suspended, and hassock fans;

    k)    Ventilators rated more than 600 volts;

    l)    Ventilators employing universal motors rated more than 250 volts;

    m)    Air heaters equipped with fans;

    n)    Draft fans for furnaces;

    o)    Heating-ventilating units;

    p)    Blowers employed as components in equipment such as furnaces, mechanical-refrigeration equipment, or air conditioners;

    q)    Fusible links and similar equipment that may be provided to disconnect a fan or close shutters in the event of fire;

    r)    Ventilators specifically intended for use in exhausting any of the following: gases other than air, atmospheres causing corrosion to the ventilator, air with water spray, or flammable vapors; or

    s)    Ventilators for the removal or conveyance of dust, stock, or refuse.

    t)    Microwaves, ventilating and otherwise; and

    u)    Ducted and non-ducted heat recovery units.

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Glossary
          • 3 Units of Measurement
          • 4 Undated References
        • CONSTRUCTION
          • 5 Components
            • 5.1 General
            • 5.2 Connectors and terminals
            • 5.3 Electrical enclosures and raceways
            • 5.4 Overcurrent protection
            • 5.5 Power supplies
            • 5.6 Supplemental insulation, insulated bushings, and assembly aids
          • 6 Frame and Enclosure
            • 6.1 General
            • 6.2 Non-metallic enclosures
            • 6.3 Non-metallic parts other than enclosures
            • 6.4 Flame spread and smoke developed requirements for non-metallic enclosures and other parts of permanently connected equipment
            • 6.5 Accessibility of moving parts
          • 7 Mechanical Assembly
          • 8 Protection Against Corrosion
          • 9 Power-Supply Connections
          • 10 Current-Carrying Parts
          • 11 Internal Wiring
          • 12 Separation of Circuits
          • 13 Insulating Material
          • 14 Motors
            • 14.1 General
            • 14.2 Enclosure
            • 14.3 Protection
          • 15 Grounding
          • 16 Switches and Controllers
          • 17 Capacitors
          • 18 Receptacles
          • 19 Spacings
          • 20 Clearance and Creepage Distances
          • 21 Filters
        • PERFORMANCE
          • 22 Starting Current Test
          • 23 Input Test
          • 24 Temperature Test
          • 25 Undervoltage Test
          • 26 Dielectric Voltage-Withstand Test
          • 27 Water Spray Test
          • 28 Metallic Coating Thickness Test
          • 29 Capacitor Tests
            • 29.1 Burnout on electrolytic capacitor
            • 29.2 Leakage current
          • 30 Overload Test – Switch or Control
          • 31 Permanence of Marking Tests
            • 31.1 General
            • 31.2 Oven-aging test
            • 31.3 Immersion test
            • 31.4 Standard-atmosphere test
            • 31.5 Unusual condition exposure test
            • 31.6 Outdoor exposure test
          • 32 Bonding Connection Test
          • 33 Controls – End Product Test Parameters
            • 33.1 General
            • 33.2 Auxiliary controls
            • 33.3 Operating controls (regulating controls)
            • 33.4 Protective controls (limiting controls)
        • MANUFACTURING AND PRODUCTION TEST
          • 34 Production Dielectric Voltage-Withstand Test
        • RATING
          • 35 Details
        • MARKING
          • 36 Details
    • POWER ROOF VENTILATORS FOR RESTAURANT EXHAUST APPLIANCES
    • APPENDIX A