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  Program 10
   
 

ULSHD1B - Understanding and Specifying a Life Safety Device

DHI CEP Program #10-1124

   
       
 
     
 

LEARNING OBJECTIVES

Part 1 - Holder Release Devices

Part 2 - Applications

Part 3 - Selection Process


 

<< Glossary of Terms >>

 

Part 1 - Holder Release Devices

What is a holder release device?
Holder release devices are electric devices that "hold a door open" and provide a release by eliminating power to the unit upon a signal from the central fire alarm panel. The door is then closed by a closing device. Holder release devices may be incorporated with a smoke detector unit and a closer (as one product) or installed separately. All manufacturers have different product designs. Most units are compatible with new or existing fire/smoke control systems that allow labeled doors to remain open with a controlled self-close.

Why are holder release devices necessary?

  • Safety
    • Release and controlled closing upon alarm or power loss
  • Convenience
    • Doors held open in non-alarm conditions
    • Executive offices (non-labeled doors) = push button release/closing
  • Fire and smoke containment
    • Compartmentalization
  • Comply with fire and life safety codes
    • NFPA 80 & 101
  • Comply with building codes
    • Occupancy requirements = BOCA, SBA, ICBO, IBC

Note: The "Authority Having Jurisdiction" (AHJ) always has the final say.

Types

  • Holder/Release (H/R)
    • Must be used with a separate door closer
    • Must connect to detector or central alarm system when used on labeled doors
    • Often used for convenience, tied to release switch in executive offices (non-labeled doors)
    • Often used in retrofit (i.e., existing closers and existing alarm control systems)
    • Accurate degree of hold open = good for pocket door applications
  • Closer/Holder/Release (C/H/R)
    • Holder/Release device with integral closer mechanism built in
    • Must connect to a detector or central alarm system when used on labeled doors
    • Cannot stand alone
  • Closer/Holder/Release with Detector (C/H/R/D)
    • Same as C/H/R, but includes integral detector module
    • Can stand alone or operate as part of the alarm control system
    • Often used when doors are added during renovation and wiring to existing system is impractical
  • Auxiliary or Companion Unit
    • Can be used in conjunction with detector unit for pairs of doors
    • Visually matches size/appearance of detector unit but does not contain a detector
    • C/H/R without detector could perform the same function but is smaller in appearance
    • Operates as a slave to a C/H/R with Detector

Styles

  • Magnet type floor mounted holder
    • Holder release = holder attaches directly to floor
    • No closer
  • Magnet type wall mounted holder
    • Holder release = holder attaches to wall
    • No closer
  • Frame mounted holder with closer
    • Holder release attaches to frame
    • Furnished with closer
    • Available with or without detector
  • Hold Open
    • Single-point
      • Hold open point is adjusted within a given range; unit always holds open at the same point unless readjusted
    • Multi-point
      • Door holds open at any point within a given range; no adjustment is necessary; hold open point is changed by moving the door
  • Free Swing
    • Door operates freely after first opening (patient room door)


Evaluation

Upon submission, results of your evaluation will be displayed with the correct answers shown in red.

  1. Most holder release devices are compatible with new or existing fire/smoke control systems.
    True.
    False.


  2. Why are holder release devices necessary?
    Fire and smoke containment.
    Safety.
    Convenience
    .
    All of the above.

  3. Often used when doors are added during renovation and wiring to existing system is impractical.
    Holder/Release.
    Auxiliary or Companion Unit.
    Closer/Holder/Release
    with Detector.

  4. Which one of the following styles is not available for holder release devices?
    Ceiling mounted holder.
    Frame mounted holder.
    Magnet type wall mounted holder.


 

   
       
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