Smoke detector

[Jens]

Has anyone experimented or installed a smoke/fire detector in their engine shed ?
If so, did you just use an off the shelf consumer unit and somehow connect to the alarm buzzer or did you find something made specifically for an engine room ?

How about some sort of fire suppression system ?

Jens

[oiler]

I'm using a single standard 68 degrees C (red bulb) sprinkler.

[lowspeedlife]

They make a relay that will activate a small load (a light or buzzer) when the detector trips, it is small enough to fit inside a round cieling box. If I were installing a smoke detector into  my engiine room i would use one that was a combination smoke & carbon monoxide detector.

Scott R.

[Tom T]

If you can talk to some one that installs fire alarms thay can help you with what you need a system that can moniter and shut down or start your system should not be to hard to set up. T

[dubbleUJay]

One of my jobs at our Telco company was to install addressable fire alarm systems. (When I still worked for them BTW)
The remote stations, IE. Microwave sites, usually had an Equipment Room, Battery Room and Diesel Standby Room. They were monitored by an addressable system and some had Halon flooding systems installed.

Basically the fire alarm had 2 sensors for each area, maybe more in bigger areas. On detection of one sensor, it would sound an audible alarm, and if the 2nd sensor was tripped, it would generate a "final" alarm.
This would then shutdown the air-conditioners and all fans, release the Halon (or sprinklers for that matter) and relay a signal back to the control room via the security alarm system.
The engine room was considered a harsh environment and we only used Heat Detectors in them as Ionization Detectors would give false alarms often. These Heat Detectors were "self regulating", that is to say they trip on the rate of temperature increase and not at a set temperature.
I'm not to familiar with domestic stand alone detectors, but I presume they have an open relay contact output.
I would use two of these in series to record an actual event if your going to release water, CO2 or whatever. Let a 1st trip give an audible alarm. (This way you know before hand that the $h!t is going to hit your extractor fan!) 
Wire them to a box/relay outside the actual room to prevent the wires from maybe burning before an alarm event are registered.
Let this box/relay(s) stop the engine/suction fans exec and release the "whatever you're going to doze the fire with"
I can draw a quick diagram if you like?

dubbleUJay

[lowspeedlife]

Jens, as I remember they would work with any detector that has a third wire that interlocks several detectors together. It's been a while since I had to install one but they were available at any electrical supply house.

   Scott R.