velux window opening when heat detector goes off

[i=p/u]

as the title says guys, have been asked if this can be done , now ihave never thought of it before , anybody give me clue how this would work and what device will be getting added to do this. i will find out soon enough but i would like to have a little info for when the time comes.. thaanks

 

[alarm man]

key word is that zone ...

it is as that is where the fire will be..

 

[i=p/u]

but with supermarkets , its different from housing... no doublt this cana be done as somone said with relay from from sounder... and chat with velux.... but hey i told him cant be done and he has scrapped the idea.... pheeew

 

[alarm man]

but with supermarkets , its different from housing... no doublt this cana be done as somone said with relay from from sounder... and chat with velux.... but hey i told him cant be done and he has scrapped the idea.... pheeew

why not,a relay from a sounder is as good as an input from anywhere

 

[i=p/u]

ok if this was to be done, would it be a no volt real from sounder straight to velux and you have to close it with remote control... its defo beyond me alarm man...

 

[Engineer54]

i know many a job where if that zone activates the roof vents open to expel the smoke.

What!! and become a feed for the ongoing fire, with oxygen?? Normally the firemen have a ''key'' to either a dedicated fireman's control point, or an HVAC panel close to the main entrance of a building to control the smoke extraction. Never seen smoke extractors working automatically in a shut down alarm mode...

 

[i=p/u]

10 bob engineer 54 10 bob lad, im with ya ,

 

[Darkwood]

why not,a relay from a sounder is as good as an input from anywhere

This maybe an option if old 240v system but with a monitored system you cant just tap a relay off the sounder circuit as you are not allowed to spur which in effect you will have created, the sounder circuits are monitored as either a loop, radial or addressable system which can have many wiring schemes. tapping a cable of the circuit to pull the relay in means the wire to the relay and the relay are unmonitored, a fault within this section could render the sounders innoperable when energised, any device fitted to the alarm or sounder circuit has to be designed specifically to do so, it also must form part of the monitored path.
Most panels have auxillary relays (volt free) which can be utilised for this purpose or a 24v output on alarm to power you device or relay, if not some brands have relay kits that can be fitted.
The fire regulations are different for different situe's with regards to venting, i recently fitted a venting window in a communal stairwell as it was the only escape route thus clearing the smoke was priority against having a possible oxygen feed... it come down to getting ppl out, its tried and tested and saves more lives, as goes the building might get more damaged; well! i know i prefer to escape with my life than worry about the damage the fire causes.

 

[Engineer54]

Yes quite correct, but that situation applies only to sealed stairways that have been classified as emergency escape routes, and fulfills all the criteria. ie, ...fire rated landing doors, landing doors must open onto the stairwell, doors must not allow substantial air flow past them when closed, all doors to be mechanically held closed (sprung/hydraulic door closers) Stairwell must not contain any flammable material etc etc...


These types of stairwells have a forced air supply to open roof vents, to a give positive air pressure within the stairwell that also helps to keep landing doors closed. All such systems can be over ridden by any fireman's control point...

 

[alarm man]

This maybe an option if old 240v system but with a monitored system you cant just tap a relay off the sounder circuit as you are not allowed to spur which in effect you will have created, the sounder circuits are monitored as either a loop, radial or addressable system which can have many wiring schemes. tapping a cable of the circuit to pull the relay in means the wire to the relay and the relay are unmonitored, a fault within this section could render the sounders innoperable when energised, any device fitted to the alarm or sounder circuit has to be designed specifically to do so, it also must form part of the monitored path.
Most panels have auxillary relays (volt free) which can be utilised for this purpose or a 24v output on alarm to power you device or relay, if not some brands have relay kits that can be fitted.
The fire regulations are different for different situe's with regards to venting, i recently fitted a venting window in a communal stairwell as it was the only escape route thus clearing the smoke was priority against having a possible oxygen feed... it come down to getting ppl out, its tried and tested and saves more lives, as goes the building might get more damaged; well! i know i prefer to escape with my life than worry about the damage the fire causes.

theres nothing wrong with fitting a relay mod in series with a sounder circuit,the loop will still be monitored,or you could fit the eol in the relay if its the last device,many fire manufactures make them for such use.

 

[alarm man]

Yes quite correct, but that situation applies only to sealed stairways that have been classified as emergency escape routes, and fulfills all the criteria. ie, ...fire rated landing doors, landing doors must open onto the stairwell, doors must not allow substantial air flow past them when closed, all doors to be mechanically held closed (sprung/hydraulic door closers) Stairwell must not contain any flammable material etc etc...


These types of stairwells have a forced air supply to open roof vents, to a give positive air pressure within the stairwell that also helps to keep landing doors closed. All such systems can be over ridden by any fireman's control point...

e54 many supermarkets and shopping centres have auto vents to release the smoke,im sure of the exact regs surrounding it but its a very common set up

 

[Engineer54]

e54 many supermarkets and shopping centres have auto vents to release the smoke,im sure of the exact regs surrounding it but its a very common set up

Perhaps that's why most of them burn down then , when they have a decent fire ...lol!!!

 

[alarm man]

10 bob engineer 54 10 bob lad, im with ya ,

cheeky young scamp,:wink_smile:

 

[Engineer54]

cheeky young scamp,:wink_smile:

Well i suppose it's better than being called a 9 bob Engineer 54!!! lol!!

 

[alarm man]

Perhaps that's why most of them burn down then , when they have a decent fire ...lol!!!

nah its the cheap cardboard buildings they build now,they dont build things to last like the old days

 

[alarm man]

Well i suppose it's better than being called a 9 bob Engineer 54!!! lol!!

id love to be called an engineer,but im just a plain old spark who does alarms