Will these heat sensors work with an Elk?

[Sacedog]

I am looking at installing these heat sensors, assuming they will work with the Elk. It appears that they support 6-125 VAC, which doesn't make sense to me, so I am hoping an electrician can pipe in here. Are these essentially the equivilent to a 2-wire smoke?

http://www.systemsensor.com/html/cd.html?UniqueID=107

 

[opie]

From taking a brief look at the instructions it looks as though these are mechanical and what you are reading is the contact rating for the relay that closes upon reaching the specified temperature so you would likely wire like a normal zone with a mag contact.

Hopefully someone will confirm this but that what it looks like to me.

 

[Digger]

A thermal is more like a pull station then a 2 wire smoke. The thermal acts like a switch (this like a pull station) and shorts the zone. A 2 wire smoke is not a dead short on a zone and must be evaluated for each panel.

This should work fine on the ELK configured as a Fire Zone.

 

[Sandpiper]

I am looking at installing these heat sensors, assuming they will work with the Elk. It appears that they support 6-125 VAC, which doesn't make sense to me, so I am hoping an electrician can pipe in here. Are these essentially the equivilent to a 2-wire smoke?

http://www.systemsensor.com/html/cd.html?UniqueID=107

Heat sensors are unpowered devices which have a dry contact only in them. In normal condition the contacts are open, and in alarm condition the contacts are closed. This is reverse from a standard burglary device, where the contacts open on alarm.

For this reason, and to meet the codes involved, heat sensors must be placed on their own zone and have an EOL resistor in the circuit. In the Elk, define the zone as a definition 10, "fire alarm", with type 5 "Fire/4-wire smoke". You can more than one heat sensor on a zone, just follow the manufacturers instructions to do so.

 

[Sacedog]

I am looking at installing these heat sensors, assuming they will work with the Elk. It appears that they support 6-125 VAC, which doesn't make sense to me, so I am hoping an electrician can pipe in here. Are these essentially the equivilent to a 2-wire smoke?

http://www.systemsensor.com/html/cd.html?UniqueID=107

Heat sensors are unpowered devices which have a dry contact only in them. In normal condition the contacts are open, and in alarm condition the contacts are closed. This is reverse from a standard burglary device, where the contacts open on alarm.

For this reason, and to meet the codes involved, heat sensors must be placed on their own zone and have an EOL resistor in the circuit. In the Elk, define the zone as a definition 10, "fire alarm", with type 5 "Fire/4-wire smoke". You can more than one heat sensor on a zone, just follow the manufacturers instructions to do so.

Awesome. Thanks for the help all. I just assumed that heat sensors would be powered, so I was planning on running 22/4 to all of them. It looks like I only need to run 22/2 to each heat sensor, using an EOL resistor, and put each one on its own zone as type fire alarm.

Thanks!

 

[gatchel]

I have the same ones hooked up to my Elk

 

[Spanky]

The heat detector will work with no problem on a fire zone.

 

[Sandpiper]

It looks like I only need to run 22/2 to each heat sensor, using an EOL resistor, and put each one on its own zone as type fire alarm.

To meet the NEC, plan on using type FPL (firewire). The NEC does not dictate the size wire to use, but many jurisdictions require #18 FPL.

Edit: I forgot to mention that the NEC allows the substitution of telephone wire (CM) for firewire (FPL). This can be done as long as the jurisdiction does not require #18 FPL.