I must admit i am confused - I have always been under the impression that datonte' door hold units should release as fail safe if there is a fault on the fire alarm system, Being connected to control output signal only, not alarm signal, as all interface should be, or have BS: Standards been relaxed.

Also localised detection should installed either side of a door that has devices fitted ?

Well according to the Salamander bumph they are fail safe.

I don't see why they need to be close in the event of a generalised fault on the fire system, only complete failure.

Re detection, .... the CFOA document which i can't attach is still current I think (March 2003) but don't hold me to it..... but this discourages devices either side of a door and wants an L3 system regardless......as it states the lack of bouyancy and air movement won't necessarily carry smoke to the detector by the door.

Any one want a copy can pm me with an email address......

Edited November 8, 200718 yr by esp-protocol

Well according to the Salamander bumph they are fail safe.

I don't see why they need to be close in the event of a generalised fault on the fire system, only complete failure.

Re detection, .... the CFOA document which i can't attach is still current I think (March 2003) but don't hold me to it..... but this discourages devices either side of a door and wants an L3 system regardless......as it states the lack of bouyancy and air movement won't necessarily carry smoke to the detector by the door.

Any one want a copy can pm me with an email address......

Aye,go on - may as well add it to the mountain of other bumph that probably doesn't apply in NI!!!!

I made the assumption that the closing on fault related to the doorguards being powered from the fire alarm so as they didn't affect the mains failure standby or alarm time

I made the assumption that the closing on fault related to the doorguards being powered from the fire alarm so as they didn't affect the mains failure standby or alarm time

I am totally confused with that !

Dorguards are standalone little units with their own battery.... not powered or connected to the fire alarm system at all....

I am totally confused with that !

Dorguards are standalone little units with their own battery.... not powered or connected to the fire alarm system at all....

I think he mains "operated by" not "powered from" then it makes sense.

Edited November 11, 200718 yr by Chorlton

but they still wont close if there is a fault on the fire alarm system itself

No they won't.

But do they have to if they are not physically connected to the AFD system?

C.

I am about to take a leap of faith with this door retainer system , anyone used them recently , any info would be good , read the blurb , seems good , in anticipation

I am about to take a leap of faith with this door retainer system , anyone used them recently , any info would be good , read the blurb , seems good , in anticipation

Top man.

Henceforth you are the new forum Salamander Man and we await your full report with great anticipation..............

Top man.

Henceforth you are the new forum Salamander Man and we await your full report with great anticipation..............

I was going to say "Good luck & let us know how you get on, better your time and money than ours" but what he said was funnier

C.