UL 228
Standard for Door Closers-Holders, With or Without Integral Smoke Detectors

DETAILS
Edition Number:5SCC Approved:--
Edition Date:2006-01-26DOD Approved: 1994-10-03
Price Code:AANSI Approved: --
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements apply to swinging door closers equipped with integral electromechanical or electromagnetic holders and which may be provided with integral smoke detectors. These requirements also apply to electromagnetic door holder units which are for use with a separate door closer and separate automatic fire detector.

    1.2 When integral smoke detectors are provided with the combination door closer-holder, the smoke detectors shall comply with requirements for smoke detectors of the photoelectric or combustion products type.

    1.3 Requirements for the installation of these combination door closers-holders with or without smoke detector units are included in the Standards for Fire Doors and Fire Windows, NFPA 80, and National Fire Alarm Code, NFPA 72.

    1.4 The combination door closers-holders (with or without integral smoke detectors) described in this Standard provide one of the following types of hold open functions:

    a)    Single point hold open.

    b)    Multiple point hold open. (Two, three, four, etc. discrete hold open points as set at the manufacturer's plant.)

    c)    Infinite hold open points with one as set by the user.

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 General
            • 2.1 Components
            • 2.2 Units of measurement
            • 2.3 Undated references
        • CONSTRUCTION
          • 3 General
          • 4 Frame and Enclosure
          • 5 Mounting of Parts
          • 6 Corrosion Protection
          • 7 Insulating Material
          • 8 Current-Carrying Parts
          • 9 Wiring Methods
          • 10 Internal Wiring
            • 10.1 General
            • 10.2 Semiconductors
          • 11 Installation Wiring Methods
            • 11.1 General
            • 11.2 Strain relief
            • 11.3 Bushings
          • 12 Spacings
        • PERFORMANCE
          • 13 General
          • 14 Normal Operation
          • 15 Endurance Test
          • 16 Jarring Test
          • 17 Input Test
          • 18 Temperature Test
          • 19 Holding Power Test
          • 20 Dielectric Voltage-Withstand Test
          • 21 Abnormal Operation Test
          • 22 Fire Tests of Swinging Door Closer-Holders With Integral Smoke Detectors
            • 22.1 Corridor test
            • 22.2 Paper fire – test A
            • 22.3 Wood fire – test B
            • 22.4 Gasoline fire – test C
            • 22.5 Polystyrene fire – test D
            • 22.6 Igniter assembly
            • 22.7 Limited open-area test (optional)
            • 22.8 Paper fire – test A
            • 22.9 Wood fire – test B
            • 22.10 Gasoline fire – test C
            • 22.11 Polystyrene fire – test D
          • 23 Smoldering Smoke Test
          • 24 Insulating Materials Test
        • MARKING
          • 25 General
    • APPENDIX A