dormakaba
News & Media

Which Door Closer?

Check installation is correct

In specifying door closers there are two main considerations

  1. Does it meet the requirements of the Equality Act? 
  2. And, if applied to a fire door, does it satisfy the fire regulations?

Equality Act 2010

Enabling ease of access for all is a legal duty for service providers and those responsible for building design. The Equality Act places a legal duty upon service providers to remove physical barriers that prevent people with disabilities from accessing a service.

What this means for door closers?

The specific performance of door closers in meeting this requirement is detailed within the Building Regulations: BS 8300:2009 and Approved Document M (ADM) in England and Wales, Section 3 in Scotland, and Part R in Northern Ireland. These state that:

“…a door closer must produce an opening force of below 30N between 0º and 30º degrees and below 22.5N between 30º and 60º degrees…”.

On a fire door this must be achieved at minimum spring strength of EN3. 
Not all door closers available in the market can meet this criteria. 

dormakaba door closers carry third party test evidence to demonstrate their ability to produce low opening forces and enable doorsets to comply with the requirements of BS8300 and ADM*.
 
Whilst BS8300 and ADM state maximum opening forces in respect of the door closer, the complete doorset must be compliant with this opening force.  Additional items of door ironmongery may contribute to the opening resistance of the doorset as well. Therefore care should also be taken when selecting hinges, intumescent seals, and latches to keep the resistance added to the doorset to a minimum.

Assessing door closer performance

TS93 torque curve

A Torque Curve certificate shows the door closer forces throughout the entire opening and closing cycle, from initial opening to beyond 60° of opening, as well as door closer efficiency.  A third party torque curve certificate provides the details specifiers and suppliers need to calculate door closer performance.  The torque curve will ensure performance meets EN3 (the minimum for fire doors), and will indicate the tolerances for other fitted items and site conditions.

Our torque curves are provided by an Independent Third Party Test House, (MPA), to ensure correct and accurate testing and data, and torque curves for dormakaba door closers are on our website. All the Torque Curves are in Newton metres (Nm). Therefore to calculate the force in Newtons simply divide the Nm by the required door width to see if the closer will comply (e.g. For a 926mm wide door 22Nm/0.926 = 23.75N)

Fire Regulations

BS EN1154 - Controlled Door Closing Devices, gives the minimum performance levels for door closing devices in relation to door width and mass, and classifies closers for general suitability for use on fire doors and safety in use.
The standard requires that closers fitted to fire doors be no less than size EN3.
All DORMA door closers are CE marked to BS EN1154. All closers have also been cycle tested to over 1 million cycles without showing any appreciable wear.
 
The Building Regulations (Approved Document B in England and Wales, Section 2 in Scotland and Part S in Northern Ireland) requires third party certification such as CERTIFIRE.
All dormakaba door closers, locks and panic hardware have been fire tested and approved by CERTIFIRE to ensure they are fit for purpose.

For a complete guide please download the which door control brochure.