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Forums :: M1 & M1EZ8 Controls :: DSC 4 wire smoke Install Help

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DSC 4 wire smoke Install Help
Posted by Polexian on 08/12/2010 03:55 PM

This is the smoke/heat I have.
http://www.smarthome.com/7497R/Hardwired-Smoke-Heat-Detector-ELE-541-CXT/p.aspx

This is the supervision relay I have.
http://www.smarthome.com/7505PSR/Power-Supervision-Relay-RM-1/p.aspx

I connected this relay to the smoke as follows
red to +
black to -
Yellow to NO
White to Com


I connected the smoke/heat to the M1G as follows
NO to Zone 6
Comm to Neg Zone 6
+ to VAUX +
- to VAUX -


I did not have the 2200 ohm on the smoke at all. I set the zone to
fire 4 wire which I beleive is 10 and I keep getting fire on
the panel. I reset the smokes but still get the same message.
Am i connecting this correctly?



Edited by Polexian on 08/12/2010 04:25 PM

Re: DSC 4 wire smoke Install Help
Posted by kauthier on 01/15/2011 09:56 AM

Have you figured out your problem? I noticed this is an old post, but if it helps I'll put in my 2 cents. The relay needs to be installed at the smoke sensor and it's purpose is to monitor the power supplied to the sensor. Firstly I never trust the wire colours on the relay and use an ohm meter or continuity tester to verify the contacts. Normally the red and black wire are: Red-V+, Black-V-. You will notice a diode across these terminals. The side with the white band should be on the red side. As for the contacts:(with the relay not powered) white-common, yellow-normally open, green-normally closed. Use your meter to verify this. Connect your relay to the smoke sensor as follows: Red-V+, Black-V-, Yellow-NO of smoke, White should be connected to the wire going to your zone input. Install your EOL across the com and no of the smoke. (The common of the smoke should be connected to the common of your zone input at the panel and not to the relay at all.) When power is provided to the sensor it also powers the relay, causing the NO contact (white-Yellow) to close allowing the panel to see the EOL. If power is removed the NO contact will open and the panel will no longer see the EOL and cause a trouble. Hope this helps.

Re: DSC 4 wire smoke Install Help
Posted by Polexian on 04/11/2011 09:39 PM

Yes I did. I connected the 2200 ohm and jumped the NC and comm on the last smoke on the chain. I daisy chained all my smokes and at the very end I connected a 2200 ohm on the alarm system.

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