On 25/05/2012 19:36, therustyone wrote:
Anyone know anything about fire/smoke alarm installations? A relative
is getting nagged by the local Fire Dept who want grade F LD2 smoke
detectors installed in an old B&B and have supplied a copy of the

That seems rather too low a standard for the situation... I would expect
a minimum of D and possibly A, B, or C

http://wiki.diyfaq.org.uk/index.php?...ectors#Grade_F

Department for Local Communities booklet “Do You Have Paying Guests?”
http://www.communities.gov.uk/public...e/payingguests
This document implies, page 14, that grade F smoke detectors are
“wirelessly connected” at least and a heat detector in the kitchen is
linked in too.

They are battery powered and interlinked. Interlinking can be wired or
wireless.

However, another document “FIRE ALARMS IN DWELLINGS” by John Ware at
http://www.electrical.theiet.org/wir...s.cfm?type=pdf
gives an ambiguous picture that for grade F the detectors may not need
to be linked.
The relevant standard is BS 5839: Part 6: 2004, though as that costs
£200 I am not about to buy it.

So do grade F smoke detectors, the minimum requirement, have to be
interlinked (wireless or cable) or not ?

thanks

Rusty


--
Cheers,

John.

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