Alarm systems types

[brucey2343]

Hi all,

My boss has told me to set the system type of 2 smokes and a heat alarm as LD3+. Can anyone send me a link or reply with a description of what each grade of fire alarm system is? I always thought LD2 was smoke hall, smoke landing and heat alarm in kitchen, and LD3 was as above without the heat alarm

Cheers!

 

[ChrisElectrical88]

LD2 is also ares where there is risk of fire such as a lounge, seating area etc.

Google throws out loads of relevant documents

 

[brucey2343]

LD2 is also ares where there is risk of fire such as a lounge, seating area etc.

Google throws out loads of relevant documents

Yes, I can find details on ld1 2 and 3, but none for LD3+

 

[gutterball]

see this AICO link

 

[brucey2343]

see this AICO link

Thanks for the reply! That doesn't contain LD3+ though, and doesn't state a type where it is 2 smokes and 1 heat?

 

[westward10]

Ask your boss for his copy of BS5839:6. Should have all the info in there. No such thing as a LD3+ system.

 

[westward10]

You have Grades of systems which refers to the detection type and this is combined with Category of system which is the level of protection.

 

[jamesjl]

Not wishing to hijack thread, but I can't figure out how to start a new one.

Can anyone tell me - is there a difference between an L1 fire alarm system and an L1 smoke alarm system?

 

[westward10]

There is an orange box on the home page stating post thread.

 

[jamesjl]

thanks

 

[Toneyz]

I was talking to Aico a few weeks ago and I was telling them that when I worked for a house bashing contractor a few years ago the building regs only used to ask for smoke detectors in the escape routes ( LD3?)but the B.S of which the certificate is based upon require LD2 escape routes, kitchen (heat) and principle habitable rooms.

 

[westward10]

LD3 only covers circulation spaces/escape routes in a dwelling this would typically be hall, stairs and landing. LD2 is the same but includes specified rooms and areas deemed to be of a high fire risk.

 

[Toneyz]

LD3 only covers circulation spaces/escape routes in a dwelling this would typically be hall, stairs and landing. LD2 is the same but includes specified rooms and areas deemed to be of a high fire risk.

Thanks, my memory was correct. I was trying to make the point that the building regs have still not caught up with the B.Standard.