Fire alarms come in grades ranging from A through F, with A being the highest and F being the lowest. The grades capture the quality of the system. … Grade A equipment should have a control system that conforms to BS5839 Part 1 or Part 6.
What is Grade A fire alarm?
Grade A: a fire detection and alarm system that is designed and installed in accordance with the recommendations of BS 5839: part 1 (2002), except clauses relating to alarm audibility, alarm warnings for the hearing-impaired, standby supplies, manual call points and radio-linked systems, which are replaced by part 6.
What is a Grade B fire alarm system?
Grade B system is a fire detection and fire alarm system comprising fire detectors (other than smoke and heat alarms); fire sounders, control and indicating equipment and power supplies conforming to BS EN54-2 and BS EN54-4.
What is a Grade D1 fire alarm system?
Grade D1: A system of one or more mains powered detectors, each with a tamper-proof standby supply consisting of a battery or batteries. Grade D2: A system of one or more mains-powered detectors, each with an integral standby supply consisting of a user-replaceable battery or batteries.
What grade are Aico smoke alarms?
The standard defines various grades for installation within certain properties. So, what grade of alarms are there for a property? In British Standard BS 5839-6:2019 there are 4 grades of system; Grades A, C, D and F. Here at Aico, we manufacture and supply Grade D and F alarms.
What is a part 6 fire alarm system?
LD2 – A system incorporating detectors in all circulation spaces that form part of the escape routes from the premises, and in all rooms or areas that present a high risk of fire to occupants.
What is a Grade F smoke alarm?
Grade F systems are the simplest form of fire detection and alarm system, are low cost and relatively simple to install. Smoke alarms to BS 5446-1 and heat alarms to BS 5446-2 give a low battery warning. A disadvantage of a Grade F system is that removal of the battery disables the protection.
What is a grade D2 fire alarm system?
Grade D2. A system of one or more mains-powered detectors, each with an integral standby supply consisting of a user‑replaceable battery or batteries. (such as FireAngel’s SW1-PF-T and HW1-PF-T alarm).
What is a grade D LD3 fire alarm system?
Grade D, Category LD3 in each flat. • 3 – 6 storey house converted to flats, not. to Building Regs – mixed system. Grade A, Category LD2 in common areas. + heat alarm in entrance to flat.
What category is a domestic fire alarm system?
Category LD1 – Maximum life protection for a domestic property. LD1 alarm systems are installed throughout domestic premises. Detectors are fitted in all areas that form escape routes and in all rooms and other areas, other than those that have a low risk of ignition, such as bathrooms and toilets.