May 24, 2011 · A Fellow fire tech explained to me that the contacts are open with a risistor in line ... When water flows the flow switch closes and it shunts the data circuit causing the fire alarm …

Feb 17, 2006 · A sprinkler flow switch is designed to sound and/or send an alarm signal if water is flowing inside the sprinkler line (i.e a sprinkler head is activated). A tamper switch will prompt …

Apr 10, 2013 · In NJ you can do fire alarm work as a licensed electrical contractor, but you need your fire equipment contractor's license ("P" number) to adjust the flow switch.

Jul 17, 2022 · 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 …

May 28, 2023 · When the dry valve opens, the fire alarm system should activate. Often the dry pipe system uses a pressure switch and not a flow switch like a wet system. Because of the …

Jul 1, 2015 · Do we need a separate circuit for fire alarm bell / sounders when we are designing digital addressable fire alarm system? What are the requirement as per NFPA 72 & UL set …

Aug 27, 2016 · Can I terminate/hook up several Zones of water flow and tamper switches, in series with each other using one monitor module for the water flow and one monitor modules …

Mar 14, 2012 · Are these usually installed/furnished by electrical? THanks. In my experience they are mostly supplied/installed by the sprinkler contractor. The tamper switch can be installed by …

Sep 12, 2009 · I installed some water flow 120 VAC bell in Fire Alarm Sytem with convential FACP,and always I had used the AC power to feed the bells from a near 120AC outlet.Senior …

Sep 5, 2008 · A typical flow switch has 2 sets of contacts, 1 for the Fire Alarm system and 1 set for a 120vac Horn / strobe to help the Fire Fighters locate the Siamese Connection on the …