Domestic Sprinkler System Help

[nlbhoy]

I've recently 1st and 2nd fixed two new build small houses, the job is due to be signed off
on Wednesday.

There's sprinkler systems fitted in both properties, I've fitted Aico detectors throughout, and
had asked the contractor (who's a friend) what was needed for the sprinkler system, I was told
just to provide a supply, as the DB is right next to the flow switch this could be done easily.

After speaking to the sprinkler guy I've been told I should have interlinked them with the
smoke detectors which makes sense. But, Like I says I was told all I needed to do was provide
a supply.

What are my options here?

Does the sprinkler need to be interlinked with the detectors? it's a very small property, can
the sprinklers have it's own sounder? it's a bit late now to start making holes in finished ceiling
to run new cables etc.

I can't find much info regarding regs for domestic sprinklers, any help/guidance would be
appreciated.

 

[Octopus]

I doubt that the sprinkler system will be interlinked with the smokes.... just imagine wet burnt toast.

 

[freddo]

We always interlink the sprinkler system with the smokes. That is the flow switch sounds the smoke alarms. With Aico use the switched input module detector base.

 

[nlbhoy]

Here's the info from Aico. You fit the switch module under the smoke detector base, or near by. The sprinkler don't go off when the smoke detectors sound, it's the other way round, the alarms will sound when the sprinkler goes off.

Ei129 Hard Wired Switched Input Module
This module triggers the alarms in a system if an external device is activated, such as a sprinkler system.

• Mains powered with a rechargeable lithium cell back up
• Connects with the alarm system through a hard wire interconnect
• Compatible with the Ei2110e Multi-Sensor Fire Alarm, 160e Series alarms and the 140RC Series

 

[nlbhoy]

We always interlink the sprinkler system with the smokes. That is the flow switch sounds the smoke alarms. With Aico use the switched input module detector base.

Is this the only way you can do this? can it have a separate sounder?

Thanks

 

[davesparks]

I doubt that the sprinkler system will be interlinked with the smokes.... just imagine wet burnt toast.

Wrong way round, activation of a sprinkler sounds the alarms.

 

[Octopus]

Haven't installed a sprinkler .... What triggers it?

 

[westward10]

Haven't installed a sprinkler .... What triggers it?

Heat at one of the heads melts the seal and pressure drops activates a pump.

 

[tazz]

If you are installing a water mist system, as building control would never request sprinkler system in a house....the mist control unit has 2 detection inputs zone 1 & zone 2. Both heat detectors (not smokes) must activate to release the water mist.

 

[westward10]

If you are installing a water mist system, as building control would never request sprinkler system in a house....the mist control unit has 2 detection inputs zone 1 & zone 2. Both heat detectors (not smokes) must activate to release the water mist.

So both heats are activated to trigger the system? Would this be a compressed air system.