L2 COMMERCIAL FIRE ALARMS
L2 Classification:
- A BS5839 L2 system will have automatic detectors on every escape route and in every room off the escape route. Like the L3 Category It will not have detection in rooms that are within a another room, however it will have detection in an area of specified risk, that may not normally have detection in a typical L3 system (i.e plant room, gas canister storage).
- Manual call points would be installed on all openings to fresh air and change of levels.
- Sounders would be installed throughout the building to achieve a minimum of 65dB of sound level (or 75dB at a bedhead if there is a sleeping risk). Sound would need to be 5dB above ambient noise up to a maximum of 120dB or flashing beacons would need to be fitted if this can not be achieved.
The Red areas show detection coverage
Typically used in:
- Hotels, hostels, student accommodation, houses in multiple occupation and similar premises with sleeping accommodation.
- Public houses with residential accommodation.
- Places of assembly (e.g. cinemas, theatres, nightclubs, exhibition halls, museums and galleries, leisure centres and casinos).
- Covered shopping centres.
- Residential care premises.
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