Cesar, I believe that this is only required for alarm check valves. Does your system have one? If not the retard device should not be required.
Thank you, Bob Knight, CET III 208-318-3057 -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Cesar Lira Sent: Thursday, August 09, 2018 11:53 AM To: [email protected] Subject: RE: Building Heights Requiring Standpipes Hi. I have a doubt. NFPA13 request that all sprinklers system shall have a Retarding device. But in our sprinkler systems installed we are not using it. Because we have a water flow sensor above check alarm instead of an alarm pressure switch or water motor alarm. Is it correct as I have it?. What would be the purpose of installing the retarding device if the alarm pressure switch or water motor alarm are not installed. My client demands to me this devices and I am looking for how can defend that I not having installed it I need to know if a water flow alarm and the pressure switch alarm are both necessary? Or just one of this options. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
