Code to tie flow switch into Smoke circuit

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Sparkyinnevada

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Location
Nevada
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Electrician
Hello,

I have an owner builder client who had the fire inspector tell them: by code the electrician has to tie the CO2/smoke circuit into the flow switch that operates their sprinkler system and rings the bell on the outside of their 1600sqft single family home. I cannot find a code that states this needs to be done. I also believe it will violate the UL listing on the Kidde smokes and CO2/smoke combos that are tied together.
Any advice or code citing is appreciated.
Thanks,
Confused in California
 
RCC1 said:
Have you looked at the Kidde SM120X relay Module? There is a user guide on the bottom of the linked page. It gives you a NO & NC contact to connect to other systems.
Click to expand...
I am pretty sure that is to provide dry contact when an alarm is detected not vice versa. I stand corrected. Use detail 2 in the manual and substitute the pull station with the flow switch.
 
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We are always required to install interior horns near the bedroom areas connected to the water flow/bell circuit. I wonder why they don't require the same instead of activating the smoke alarms.
 
I'm no F/A tech by any means but was profoundly disoriented when informed that in fact the bell is for water flow and not for the
fire itself, Maybe it was a hang-up or flashback to school where the bell was a Signal for a Fire/Alarm drill.
 
If there is a smoke/ heat in the riser room and your bell is 120 v.
I think I would opt for #3 or #4.
The relay would power up on flow.
Use same circuit for smokes and flow alarm. Then the internal power supply of the relay will activate sounding alarms. This way if you have that circuit on back up you maintain protection. The relay will last long not being powered all the time.
Now if you need aux device to power use #2. An example of you want out side bell to ring or separate horn strobe to fire on alarm.
 
cadpoint said:
I'm no F/A tech by any means but was profoundly disoriented when informed that in fact the bell is for water flow and not for the
fire itself, Maybe it was a hang-up or flashback to school where the bell was a Signal for a Fire/Alarm drill.
Click to expand...
Yes/no. Water flow as a result of sprinkler activation is an indicator of fire present. Usually would see this setup in a multifamily residence where individual dwellings unit alarms might not be interconnected electrically, and alarms as a result of actual fire not just neusence alarms from cooking or shower steam from individual units are desired. Not sure why the request in a single family home or exactly why a bell on outside of home. California thing?
 
Fred B said:
Yes/no. Water flow as a result of sprinkler activation is an indicator of fire present. Usually would see this setup in a multifamily residence where individual dwellings unit alarms might not be interconnected electrically, and alarms as a result of actual fire not just neusence alarms from cooking or shower steam from individual units are desired. Not sure why the request in a single family home or exactly why a bell on outside of home. California thing?
Click to expand...
It's not just California, it's this specific county that wants it. The CEC doesn't require it, just this specific county. I had not run into it yet, as the county requiring it has only a small part of it in the area I service.
 
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