How do I install a flow sensor?
Page 1 of 3 1 2 3 Last Jump to page: Results 1 to 10 of Thread Tools Show Printable Version Email this Page… Search Thread. Angel Electric View Profile View Forum Posts Private Message. Join Date Apr Location OBX, NC. Join Date Sep Location Online dating sydney ns, NC Posts 5, Here's my gut response. Isn't the system like a phone you have a open line that one closes when reporting or using 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 panel to go into Alarm, I guess im just going for second perspective of how the switch works and its purpose in what it is controling.?
Join Date Aug Location Southeastern PA Posts Originally Posted by Angel Electric. Whatsoever thy hand findeth to do, do it with thy might - Ecclesiastes. Join Date Jul Location New Jersey Posts 23, Water flow would close the switch, shunt the resistor and send the system into an alarm condition. If flow switch hook up wiring became broken or a wire came off of a terminal then the FACP would not read the resistor and would show a trouble alarm.
This may all have changed now with addressable devices. Rob Moderator All responses based on the NEC unless otherwise noted. MichaelGP3 View Profile View Forum Posts Private Message. Join Date Jul Location San Francisco bay area Posts Originally Posted by infinity. If the wiring became broken or a wire came off of a terminal then the FACP would read no resistance and would show a trouble alarm.
In battle, in forest, at the precipice in the mountains, On the dark great sea, in the midst of javelins and arrows, In sleep, in confusion, in the depths of shame, The good deeds a man has done before defend him. Originally Posted by MichaelGP3. If the wire became broken flow switch hook up came flow switch hook up from a terminal, the FACP would read infinite resistance and show a trouble. No resistance across the waterflow flow switch hook up would be an alarm not a troubleregardless of whether the system used traditional zone cards or addressable modules.
I've found it helpful to steer clear of the phrase 'trouble alarm'. Trouble signal or trouble condition leads to less confusion in my opinion. Join Date Jan Location NH Posts 1, Tcook View Profile View Forum Posts Private Message. Join Date May Posts 1. I've encountered this exact issue with other initiating devices Specifically, heat detectors with normally closed contacts built into them Here is the code that was used on me by an AHJ regarding things wired normally closed: NFPA 72section 4.
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