Mains Smoke Alarm

[ColinJacobson]

What is the regs for these?

Do they need to be on their own fused spur?
Where are they supposed to be fitted?
How many of them?
etc?

Thanks.

 

[1john]

read BS-5839

 

[ColinJacobson]

read BS-5839

Which says?

 

[Taylortwocities]

BS 5839 generally provides recommendations for the planning, design, installation, commissioning and maintenance of fire detection and fire alarm systems in and around buildings, other than dwellings. It does not recommend whether or not a fire alarm system should be installed in any given premises. Recommendations for fire detection and alarm systems in dwellings are given in BS 5839-6.

It costs £224 and stretches to several hundred pages. Buy a copy if you want to know what's in it, I am certainly not going to type it all in for you.

If you are too mean to stump up the necessary then you could look at this http://www.theiet.org/publishing/wiring-regulations/mag/2005/17-firealarms.cfm?type=pdf

NOTE: reading stuff does NOT make you competent.

 

[ColinJacobson]

If you are too mean to stump up the necessary then you could look at this http://www.theiet.org/publishing/wiring-regulations/mag/2005/17-firealarms.cfm?type=pdf

Thanks. For an existing dwelling, smoke alarms need to be places of exit and high fire risk. No user switch. Can be on an RCD but not on the same RCD as the sockets. Or on a non-RCD circuit like lights.

That is D, LD2 from the link.

thanks.

 

[Taylortwocities]

How many floors in the building
IS it a house
Are you doing this for yourself, or someone else

Do you have a calibrated decibel meter to confirm the sound levels as required.

Short version of the regs here http://www.aico.co.uk/smoke_regs.htm
Aico site will also recommend locations for alarms.

 

[ColinJacobson]

How many floors in the building
IS it a house
Are you doing this for yourself, or someone else

Do you have a calibrated decibel meter to confirm the sound levels as required.

Short version of the regs here http://www.aico.co.uk/smoke_regs.htm
Aico site will also recommend locations for alarms.

thanks.

Not for me. I am finding out what needs/has to be done. Two floor existing house in reverse. Living room and kitchen on the upper floor, beds and bathoon and hall on ground. Staircase from hall directly into living room above.

No decibel meter.

 

[ColinJacobson]

I think it would be best to have:

1. A smoke alarm with battery backup in the hallway near te front door.
2. A heat alarm in the kitchen upstairs.

Do the likes of Screwfix sell these? If so what is the best make they sell?

 

[Taylortwocities]

I think it would be best to have:

1. A smoke alarm with battery backup in the hallway near te front door.
2. A heat alarm in the kitchen upstairs.

Do the likes of Screwfix sell these? If so what is the best make they sell?

The alarm in 1. needs to be near the BEDROOMS. BS compliant smoke alarms are designed and engineered to have a 75+dB sound level at 3m so the alrms needs to be withing 3metres of all bedroom doors, if not you'll need more than one alarm.

I suggest that the alarms be interlinked.

 

[Donkmeister]

Whilst the regs don't require it, I'd recommend an alarm in each bedroom...

A smoke alarm outside a closed internal door can not rowse a heavy sleeper on the other side.

 

[ColinJacobson]

Are the Screwfix Dircon make any good? The main with battery backup are not that cheap, so I assume by price they are OK.

 

[LiamPope]

Installed some during my renovation. Only a 2 bed bungalow, but i decided to 'cover all bases' and install both types of smoke alarm (optical and ionisation), CO, and heat. Got CO and one smoke in the area outside the bedrooms, smoke in the lounge/dining area, and heat in the kitchen. All Kidde interlinked with battery backup on a dedicated RCBO. I'd suggest the manufacturers recommendations of one in every bedroom is a good way of selling extra alarms - the four of mine going off together could wake the dead. Have a look on manufacturer's websites - they should have guides on where to install the different types, where to avoid, etc etc.