Building hardware. Electrically controlled hold-open systems for fire/smoke door assemblies. Requirements, test methods, application and maintenance1 Scope This European Standard specifies requirements, methods of test and performance criteria against which the compatibility of components and their performance can be assessed when used in combination to form an electrically controlled hold open system. It also specifies requirements for the integrity of such hold open systems when connected to fire detection and fire alarm systems or other systems, including the signal exchange and technical data

Those processes are held as examples of combining ISO 200781

specific tests may exist that should be used in preference to this International Standard

sedimentation

including the following:

hydration systems) and/or their compatibility with the ensembles are not covered by the standard

As a code of practice

Annex C (informative) Stated performance level

they can try to repair the material damage

and tube making

These terms may be of particular importance in the formulation of maintenance contracts

BS 1769 gives detailed information on identification marking for unified hexagon bolts

What is BS 6920-2