
What standards should I fit to?
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BS 5839-6:2004 is the main standard for domestic standard for domestic fire alarm systems. It tells you everything you need to know about design, installation, testing and maintenance.
- Building Regulations refer to this standard
- Local Authorities, Housing Associations and Private Landlords have a “Duty of Care” to their tenants to fit to this standard
- Some electrical bodies (e.g. NAPIT and the NICEIC) say to fit to this standard
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Building Regs tells you the minimum you need to fit in new build and materially altered (e.g. loft conversions, extensions etc.) properties only.
- There are different Building Regs for England and Wales, Scotland and Northern Ireland
- A Building Control Officer will be looking for an alarm system to this standard (as a minimum) before signing off on the property
- Building Regs say to follow BS 5839-6 so if in doubt, follow this standard and you should be covered
The Alarm Selector will tell you what to fit to meet each of the above standards.
Alarm Selector - fitting to BS 5839-6:2004
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BS 5839-6:2004 is the main standard for domestic standard for domestic fire alarm systems. It tells you everything you need to know about design, installation, testing and maintenance.
- Building Regulations refer to this standard
- Local Authorities, Housing Associations and Private Landlords have a “Duty of Care” to their tenants to fit to this standard
- Some electrical bodies (e.g. NAPIT and the NICEIC) say to fit to this standard
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BUNGALOW
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HOUSE
2-3 STOREY
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HOUSE
4+ STOREY
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| ALARMS TO FIT | ALARMS TO FIT | ALARMS TO FIT | ||||||||||||||||
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GRADE: D
CATEGORY: LD2
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GRADE: D
CATEGORY: LD2
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GRADE: D
CATEGORY: LD2
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ALARM SERIES
YOU CAN USE
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ALARM SERIES
YOU CAN USE
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ALARM SERIES
YOU CAN USE
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2100 Series
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2100 Series
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Please call our Technical Department on 0870 758 4000 to discuss. Or, drop us a note using our help form and we'll call you! |
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| 160RC Series | 160RC Series | |||||||||||||||||
| 140 Series | 140 Series | |||||||||||||||||

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HMO 1-2 STOREY |
HMO 3+ STOREY
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| Communal Area | Individual Unit | |||||||||||||||||
| ALARMS TO FIT | ALARMS TO FIT | ALARMS TO FIT | ||||||||||||||||
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GRADE: D
CATEGORY: LD2
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GRADE: A
CATEGORY: LD2
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GRADE: D
CATEGORY: LD2
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ALARM SERIES
YOU CAN USE
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ALARM SERIES
YOU CAN USE
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ALARM SERIES
YOU CAN USE
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2100 Series
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Please call our Technical Department on 0870 758 4000 to discuss.
Or, drop us a note using our help form and we'll call you |
2100 Series | ||||||||||||||||
| 160RC Series | 160RC Series | |||||||||||||||||
| 140 Series | 140 Series | |||||||||||||||||

Alarm Selector - fitting to Building Regs
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Building Regs tells you the minimum you need to fit in new build and materially altered (e.g. loft conversions, extensions etc.) properties only.
- There are different Building Regs for England and Wales, Scotland and Northern Ireland
- A Building Control Officer will be looking for an alarm system to this standard (as a minimum) before signing off on the property
- Building Regs say to follow BS 5839-6 so if in doubt, follow this standard and you should be covered
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| BUNGALOW |
HOUSE
2-3 STOREY
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| ALARMS TO FIT | ALARMS TO FIT | |||||||||||||
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GRADE: D
CATEGORY: LD3
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GRADE: D
CATEGORY: LD3
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ALARM SERIES
YOU CAN USE
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ALARM SERIES
YOU CAN USE
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2100 Series
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2100 Series
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| 160RC Series | 160RC Series | |||||||||||||
| 140 Series | 140 Series | |||||||||||||

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| BUNGALOW |
HOUSE
2-3 STOREY
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| ALARMS TO FIT | ALARMS TO FIT | |||||||||||||
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GRADE: D
CATEGORY: LD2
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GRADE: D
CATEGORY: LD2
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ALARM SERIES
YOU CAN USE
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ALARM SERIES
YOU CAN USE
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| 2100 Series |
2100 Series
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| 160RC Series | 160RC Series | |||||||||||||
| 140 Series | 140 Series | |||||||||||||

Fire Risk Assessment & Fire Statistics
BS 5839-6:2004 recommends that alarms are fitted based on a Fire Risk Assessment. This Assessment should take into account the type of property and the people living in it.
Fire Risk Assessment is about looking at the probability of a fire starting and the harm that would be caused from that fire. Alarms should then be fitted to balance out this risk. Basically, the higher the risk, the more thorough the alarm system.
The design of the alarm system should be based on:
1. Probability of fire occurring
Does anyone smoke? Any open fires? TV’s? Heaters?
2. Probability of injury/death to the people living in the property if fire occurs
Any elderly people? Narrow stairs? Number of storeys? Exits?
3. Probability of the system operating correctly at the time of fire
Are the alarms reliable? Do they have back-up power?
4. Probability of early detection and warning in the event of fire
How many alarms are fitted? Are they fitted where there is a risk of fire starting? Will everyone hear the alarm?
BS 5839-6 recommends that each room in a property is assessed for it’s own individual fire risk – fire statistics can help. Also, the lifestyles of the people living there should be taken into account (e.g. Do they smoke? Smouldering cigarettes can easily start a serious fire). The table below shows the fire statistics (from Fire Statistics United Kingdom published by the Government) to give guidance on the highest risks.
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Fires
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Deaths from
those fires
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| Kitchen | 54% | 15% |
| Bedroom/Bedsitting Room | 12% | 30% |
| Living Room/Dining Room | 12% | 40% |
The Alarm Selector gives the standard recommendations of BS 5839-6 but remember, if in doubt always fit extra alarms.
For further information see BS 5839: Pt.6: 2004.
New Installation – What do I need to check?
- Choose the right alarms for the job. Have a look at the Alarm Selector below to check which ones to fit
- Decide where to fit them. Are there any obstructions or sloped ceilings? Check the siting requirements
- Taking the supply from the lighting circuit?
- Is there a permanent mains feed at the pendant?
- Will the circuit take the additional load?
- Anything that can cause noise or spikes (e.g. dimmer)?
- Taking the supply from the distribution board?
- Is there space on board?
- Will the supply take the additional load?

Replacing Alarms - What do I need to check?
- Which alarms are being replaced?
- Do any new alarms need fitting? Check using the Alarm Selector
- Can you hard-wire to the new alarms? To cut down on wiring, use RadioLINK bases
- Are the existing alarms sited in the right place? Check the 'Where do I site?' section
- Is there a mains feed to each existing alarm?
- Are existing alarms interconnected together?
- Will the new alarm hide the mark left on the ceiling by the old one? An Ei1516 masking plate could help
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Ceiling Masking Plate |
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- Taking the supply from the lighting circuit?
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- Is there a permanent mains feed at the pendant?
- Will the circuit take the additional load?
- Anything that can cause noise or spikes (e.g. dimmer)?
- Taking the supply from the distribution board?
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- Is there space on the board?
- Will the supply take the additional load?
Alarm Control Switches, Call Points & Relays
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Alarm Control Switches bring three alarm control functions to a wall switch:
TEST – Press to test alarms
LOCATE – Press to identify triggered alarm
SILENCE – Press to silence alarms
Available in hard-wired and RadioLINK wireless versions
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Hard-wired
Alarm Control Switch
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RadioLINK
Alarm Control Switch
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Recommended for HMOs (Houses in Multiple Occupation) and blocks of flats.
Available in hard-wired and RadioLINK wireless versions
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Hard-wired Call Point
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RadioLINK Call Point
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Relays are used to switch an external device when the alarms are triggered, like:
- Strobe
- Sounder
- Magnetic Door Holder
- Window Vent
- Warden Call System
They contain Volt-free (or ‘clean’) relay contacts so can be wired up to switch a 230V mains device, a low Voltage device or just give a switched output.
Available in hard-wired and RadioLINK options:
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Hard-wired Relay
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RadioLINK Relay
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Carbon Monoxide (CO) Alarms
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Here are some danger points to look out for:
- Poorly connected, blocked, cracked or corroded flue pipe/vent
- 'Back drafting' - where air is drawn back through appliances (e.g. by bathroom or kitchen air extraction fans)
- Cracked heat exchanger on gas heating system
- Appliances that don't have any flues/vents (e.g. gas cooker, portable heaters etc.)
- Not keeping up regular servicing of appliances

In England and Wales, Building Regulations Document J states that an alarm must be installed in any room/area containing a solid fuel appliance (e.g coal fire, wood burner), although any fuel burning appliance could be a potential source of CO.
The advice in this section is a guide. If you need further information, see the BS EN 50292:2002 standard.
Alarms for Hearing Impaired
Special alarms are available for deaf and hearing impaired people.
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They have two main parts to them:
If the alarm triggers the strobe flashes and the vibrating pad wakes the person up |
There are also vibrating pagers that can be carried around.
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Connecting to sprinkler systems
Smoke alarms can be connected to a sprinkler system so that if the sprinklers trigger, smoke alarms sound to warn of fire in other rooms. Use a Switched Input Module to connect to the sprinkler flow switch.
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Hard-wired
Switched Input Module
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RadioLINK
Switched Input Module
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When the sprinkler activates it triggers the module. A signal is then sent out from the module to activate the alarms.
































