NFPA 13, 2010 22.1.5, Working Plans for Automatic Sprinkler Systems with Non-Fire Protection Connections, may be of help. Granted the appendix shows heaters being connected to the sprinkler system with 286 degree sprinklers, but this may of some assistance.
Dan Failla Charleston Fire Marshal's Office Charleston SC -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Nicky Marshall Sent: Thursday, June 13, 2013 6:02 AM To: [email protected] Subject: Freeze prevention Is anybody aware of approved systems for freeze prevention of sprinkler pipework that involves circulating water within pipework? We are aware of dry systems, anti-freeze systems, heat tracing. A dry system requires additional water due to area increase - a tank would be needed. Anti freeze has not got very good press lately and approved products are expensive. Heat tracing does not seem like a very energy efficient system. There are circulating systems for domestic applications and internet searches show several patents for such systems for sprinklers, but I cannot find actual products. Thanks Nicky Marshall Protech Design New Zealand _______________________________________________ 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
