I don't believe there is a prohibition, but if you take 2 heads off one outlet, you had better verify it hydraulically.
Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (ofc) 860-608-4559 (cell) Sent using CloudMagic [ https://cloudmagic.com/k/d/mailapp?ct=ti&cv=6.0.64&pv=8.2] On Fri, Dec 18, 2015 at 2:58 PM, [email protected] <[email protected]> wrote: I was always taught when doing an upfit you only replace 1 for 1, meaning if here was 1 existing head on an arm-over you couldn't say add another "new" head and now be feeding 2 heads off that same arm-over, otherwise you'd have to add a new arm-over to the branchline for the new head. Now that may have come from a spec long long ago but I swore it was also in NFPA, however I don't see it worded that way in the standard. Any help? Brian Harris, CET BVS Systems Inc. Sprinkler Division bvssystemsinc.com<http://bvssystemsinc.com/> Phone: 704.896.9989 Fax: 704.896.1935 _______________________________________________ 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 I've seen wording too. I think it is related to above/below, 1/2 nip permissible (unless seismic), etc, it's involved, but it's there _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
