Hi everyone,
I looking into expanding my home fire alarm system to include carbon monoxide detection along with existing smoke detection on my addressable Silent Knight IFP-50 panel. If I were to install System Sensor CO1224T’s, how would I tie them into my system. Since these are conventional detectors, would I wore them into an AIM?
You could wire them into an AIM, but then you would either need an addressable power supply or you would need to sacrifice one of your NACs for aux power to power the detectors.
Besides NAC’s being converted into AUX. Power, where else could I get power
The IFP-50 doesn’t really offer any good auxiliary power unless you use one of the NACs for constant power. Your only other option is to go with a standalone power supply. The CO1224T is a dual 12/24VDC unit, so you could use either a 12 or 24 volt power supply. For power supply options, I would go with any of the following…
Altronix 624 - basic 12VDC power supply (would still need a 16 or 24VAC transformer and possible enclosure)
Altronix 624ET - same as the 624 but INCLUDES the transformer and enclosure
Altronix AL100UL - a better 12VDC power supply, adds AC failure and low battery supervision via form C relays, includes an enclosure but still need the transformer
Altronix PM224 - same as the AL100UL except is 24VDC and DOES NOT include an enclosure (or transformer)
Transformers are easy to come by. You usually need a 16 or 24VAC, 20-40VA, plug in transformer. Check the power supplies spec sheet for the exact voltage and rating. I like the ELK Products ELK-TRG1640 or ELK-TRG2440 transformers - well built, almost never have problems, and self-resetting fuse. The cheap ones have a one-shot internal, non-replaceable, fuse, that if you short out the output, it’s done. Keep an extra on hand just in case.
Personally, I have the Altronix AL100UL in my home and it runs the CO detector, motion detectors, and a couple of other accessories on my security system to take the load off the security system’s on-board power supply. For your application, those CO1224T’s only pull 20mA standby, 40mA alarm, so a 0.75A power supply is PLENTY.
You will also need batteries. One battery for a 12V unit, two for a 24V unit. You could probably safely go with 4Ah batteries. Do the battery calcs but again, not pulling much amps.
And for a little self promotion, this is still available - https://forums.thefirepanel.com/viewtopic.php?f=5&t=7977
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Besides NAC's being converted into AUX. Power, where else could I get power
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You would have to use some fire alarm power supply that outputs power limited. Either that or put the NAC through one of the onboard relays and treat that relay as a NAC in programming. Then change the other NAC to resettable power. Just make sure you still have supervision and don’t overdraw the NAC.
Thank you for the help!
Would this be fine for what I need it to do?
It’s more then enough. The power supply can handle up to 6.5A at 24vdc. I would add a in line fuse (minimum of 1A) right off the DC output because it’s considered non power-limited. If you are interested send me a PM and I can send you pictures.