Wireless Fire Alarm Code Standards

Fire Systems Ltd, attending a Wireless Fire Detection CPD day at the Holiday Inn, at Kings Cross. The presentation was presented by Paul Turner, who is the Sales Director of Sterling Safety Systems. Sterling Safety distributes the Hyfire wireless range throughout the UK,

The presentation will cover the following:

  • Summary of the Standards
  • CPR Compliance
  • BS5839 Part 1
  • EN54 Part 25
  • Wired or Wireless
  • New Technologies
  • Hyfire Wire to Wireless Fire Detection
  • Applications

The standards that govern wireless fire detection are the Code of Practice BS5839-1 2013 and the Products code EN54 part 25 for the radio links and part 2, 4, 5, 7 and 11 for the other separate component parts of the system.

  • The Construction Products Regulation came into force on 1st July 2013. It was brought in to harmonise Wireless Systems across Europe. All Wireless fire alarm equipment must have been tested to the relevant EN54 to obtain the CE mark.
  • BS5839-1 2013 is a code of practice of the design, installation, commissioning and maintenance or both wired and wireless fire alarm systems.
  • There were some significant changes to the Wireless part of the code, which is Section 27.
  • The BS was predominately written for wired systems. Section 27, covers the requirements for Wireless Systems. BS requirements apply to both fully wireless and hybrid systems.
  • Section 27.2 states components for wireless systems must comply with EN54-25.
  • Wireless Systems introduced into the standard in 2002.
  • BS5839-1:2013 brings fault times in line with EN 54-25
  • EN54-25 and BS5839 differ on the power sources to the devices.
  • EN54-25 permits the use of a single battery for each device; however, BS5839, states you must have at least two independent power supplies.

Power Supplies for Wireless Equipment:

  • Mains and battery,
  • Primary and another Primary battery
  • Primary and a Secondary Battery
  • The panel has mains and battery
  • BS5839, states before the device loses power, it must be able to provide a 30 day warning and operate in an alarm condition for 30 minutes.
  • The Primary battery must have a life duration of 3 years under normal condition.Automatic silencing is permitted after 30mins, if it complies with section 16.2, which states:
  • Agreement with the authorities,
  • If the building is. Furthermore, the sounders must restart if another activation takes place.
  • Installation should only take place once a radio signal strength survey has taken place.
  • You should use the correct test tool and record results.EN54 Part 25New part of EN54 part 25 is covering Wireless fire alarm systems.
    It was released in 2008
    It was written to ensure wireless systems offer the same level of security as wired systems.
    Battery life of 3 years all faults must be reported in 300 seconds.
    The Hyfire system can operate as a standalone wireless system, with one translator situated at the panel. To extend the radio signal an Expander is used. A translator can accommodate 127 devices and an Expander 32 devices. The fire alarm control panel can be a Kentec or Advance using Argus Protocol.Furthermore, the system can operate to accommodate only wired addressable devices 256 devices per loop.This is where the Hybrid capability comes into play, supporting both wired and wireless. If you want to increase the quantity of the wireless devices, you just add a translator. You can have six translators per loop. As stated earlier, the radio signal can be extended as far as required using expanders as shown.The huge advancements in mobile phone technology have allowed wireless fire alarm to benefit. For example, the batteries are much smaller, last longer and have a longer working life. Electronically, the devices are much smaller, becoming cheaper and aesthetically pleasing. If you look at a wired detector to a wireless detector you will not observe much difference.Radio communication is now Bi Directions, the 868Mhz radio bandwidth is dedicated to security systems only. Furthermore, EN54-25 ensures all systems have to reach a certain standard.Our everyday lives are embracing wireless technology in a big way. We prefer the ease and freedom of wireless then having to install cables.The Hyfire wireless fire alarm system has been installed in many different types of applications as listed here. If you require advice or assistance in the design and installation of a wireless system make sure you contact a fire alarm company that specialises in wireless systems. Fire Systems Ltd, has many years’ experience within this field and has installed hundreds of systems.