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Install and Commissioning

We can design and install wide range of conventional, addressable & wireless fire alarm systems to suit your requirements and needs.  

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Categories of Fire Alarm System


To understand if you need to install or upgrade a fire alarm system, you should complete a fire risk assessment.  This will determine what category of fire alarm system should be installed, depending on the type, size and use of your premises. 

  

Below is a guide to the fire alarm categories as defined in BS5839:1-2017.  It shows the categories of system, according to whether the system is purely manual or  automatic fire detection.  

  • L1: Systems installed throughout all areas of the building.
  • L2: Systems installed only in defined parts of the building, including all parts necessary to satisfy the recommendations of the code for a L3 system. The additional areas protected, over and above those protected in a L3 system, are those in which there is either high likelihood of fire starting or a high risk to life if fire does start.  
  • L3: Systems designed to give warning of fire at an early enough stage to enable all occupants other than, possibly those in the room of fire origin, to escape safely, before the escape routes are impassable due to the presence of fire, smoke or toxic gases. To satisfy this objective, other than in the case of very short corridors, fire detectors need to be installed in all rooms or areas that open onto the escape routes.
  • L4: Systems installed within those parts of the escape routes comprising circulation areas and circulation spaces, such as corridors and stairways.
  • L5: Systems in which the protected area(s) and/or the location of detectors is designed to satisfy a specific fire safety objective (other than that of a L1, L2, L3 or L4 system). 
  • P1: Automatic fire detection systems intended for the protection of property and a link to (ARC) Alarm receiving centre Systems, installed throughout all areas of the building.
  • P2: Automatic fire detection systems intended for the protection of property and a link to (ARC) Alarm receiving centre Systems, installed only in defined parts of the building.