TGD B 2006 – 1.5.5.2 – Fire detection and alarm system types

1.5.5.2 Fire detection and alarm system types Dwelling houses should be provided with an LD1 or an LD2 fire detection and alarm system in accordance with BS 5839 Part 6: 2004 designed for the protection of life. An LD1 system incorporates suitably located and interconnected detectors throughout the dwelling house, including all circulation areas that form part of the escape route and in all rooms and areas in which a fire might start, other than toilets, bathrooms and shower rooms. An LD2 system incorporates suitably located and interconnected detectors in all circulation areas that form part of the escape route and in all rooms or areas, such as kitchens and living rooms, that present a high fire risk. Heat detectors should be provided in kitchens. Dwelling houses with up to three storeys above ground level should have at least an LD2 system. Dwelling houses with more than three storeys, large houses, or where the fire risk so warrants, should be provided with LD1 systems as appropriate, which will provide a higher level of life safety. Guidance on system types for different situations is contained in BS 5839: Part 6: 2004

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