Do smoke detectors and heat detectors connect to the same circuit?


Old 08-05-07, 01:59 AM
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Do smoke detectors and heat detectors connect to the same circuit?

I am installing 4-wire smoke detectors, and two-wire heat detector (Kitchen) to a Power 832 system. Do these devices both connect to the same circuit? On the smoke detectors, I assume two wires are for power, and two are for detection. Would I use the detection wires for the heat detector?

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Old 08-05-07, 08:09 AM
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From just looking at the install manual you need to connect each of these detectors to each other, then have the last detector connected to a "Z" terminal on the board and the other on any "COM" terminal.

The two power wires will go to "AUX" and the other one to "PGM 1 or 2"

You will need a EOL resistor as well.

Here is the installer manual for your panel. Look at section 2.9.4

I'm sure you will get more input soon as well.
Old 08-05-07, 04:38 PM
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Yes, you may put the heat detector in the circuit. You would only use the alarm loop pair, of course. The heat detector is just a heat actuated normally open switch.
Old 08-07-07, 08:55 PM
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You should also have a power supervision relay connected at the last smoke detector. THis monitors the power on a 4 wire smoke loop, and if the power goes away, breaks the detector or zone circuit, causing a trouble.

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