Original poster stated they couldn’t’ figure out why the fire pumps didn’t go off on a regular basis.
Craig L. Prahl Fire Protection Group Lead/SME CH2M 200 Verdae Blvd. Greenville, SC 29607 Direct - 864.920.7540 Fax - 864.920.7129 CH2MHILL Extension 77540 craig.pr...@ch2m.com From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of rongreenman . Sent: Monday, October 31, 2016 1:41 PM To: sprinklerforum@lists.firesprinkler.org Subject: Re: One weird cross connected system [EXTERNAL] Right. Circulating water in the heating/cooling portion that uses the same piping. How did fire pumps come up? On Mon, Oct 31, 2016 at 10:27 AM, <craig.pr...@ch2m.com<mailto:craig.pr...@ch2m.com>> wrote: There is no consumption of water, hence no reason for the fire pump to be engaged. The system circulates water throughout. NFPA 13, 2016, 3.4.2. There is still mention of these systems in NFPA 13, 2016, “circulating Closed Loop Systems, 25.3. See Figure 23.1.5(a) for a sample layout of such a system. Craig L. Prahl Fire Protection Group Lead/SME CH2M 200 Verdae Blvd. Greenville, SC 29607 Direct - 864.920.7540<tel:864.920.7540> Fax - 864.920.7129<tel:864.920.7129> CH2MHILL Extension 77540 craig.pr...@ch2m.com<mailto:craig.pr...@ch2m.com> From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org<mailto:sprinklerforum-boun...@lists.firesprinkler.org>] On Behalf Of rongreenman . Sent: Monday, October 31, 2016 12:38 PM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: Re: One weird cross connected system [EXTERNAL] Also known as tri-water. See if there are heat exchangers off the the mains or cross mains. On Mon, Oct 31, 2016 at 4:24 AM, Richard Carr <rc...@coxfire.com<mailto:rc...@coxfire.com>> wrote: Sounds like a multi-use system, they were common in the 80’s. Richard Carr, SET Branch Manager Cox Fire Protection, Inc 6555 Grace Lane. Jacksonville, Fl. 32205 rc...@coxfire.com<mailto:rc...@coxfire.com> 904-781-8227<tel:904-781-8227> From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org<mailto:sprinklerforum-boun...@lists.firesprinkler.org>] On Behalf Of Todd Williams Sent: Monday, October 31, 2016 6:11 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: One weird cross connected system [https://secure-web.cisco.com/1wIfAKhhE9vaL3_5dLZJ3LMJHAxa0V--olwxXaxcuWD1lOM_XvFBJal79JgkIECNSd1XglwBWPfkgtnLlJY8XjoULv2ECIYlx6PniIlHzgPiv86_X2S6SDi7NjArdSM15vhdoXdynZVovYHCKWVctiguwhwFsKdbBbAUdKfOlC409FompmOjby7WPq_69hwJDIwOV0DGrztyWVS-mvFE2AYQR0fx7RSoUjxJ-YGtcyrzLWRx7bjZwQc_GgyVLroZJOXHzft9iEZ0-j0dnPIinj2vDTUldrxabgFpvKsbSNodfEJDs5KmuO9fdu5FuOxeM4CFu8zJpj-j5oTmlitLdTdvLQ272cJu7XKADxzBmyxaQy7p8s5RQI6jf4xDW47N0v2mlctAq53sOWQzNPZPaRoP19zTuAnMfo2PuHv1k79n955NYsl1hnYJ_PH4Uvuu6lQjYfadShUCwvHZDWHmdEg/https%3A%2F%2Ftr.cloudmagic.com%2Fh%2Fv6%2Femailtag%2Ftag%2F1477908647%2F2d4c4b9cd9f303a04c4d9c24d32f6571%2Fecdd64c309bb34b23eb65c654267bfff%2F1fefe822716bbbd7efa6f3a027987f92%2F9efab2399c7c560b34de477b9aa0a465%2Fufo.gif] I was at a location last Friday that had one of the strangest systems I have seen. This is a 3 story office/retail space with underground parking garages. The upper floors are wet and the garages dry. The sprinkler system on the upper floor has several connections to feed mechanical equipment (VAV boxes, etc.). This has been in place since the mid 1980s and the local AHJ has made no comment. I'm sure this is not legal and I have no idea why they do not get false alarms or why the fire pump does not go off on a regular basis. Has anybody run into something like this before? Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080<tel:860-535-2080> (ofc) 860-608-4559<tel:860-608-4559> (cell) via Newton Mail<https://secure-web.cisco.com/1v3_4hFDpGlMWt5xf5iCsvonf97N24gZPNzMeJaqzbiS2LXqAv8jp9feuhImt_ENnKkmOKd7d332d-hmXaAkcALwqLll2sQLtMGzZqopZbUuiKFGs9gwORDw6_oJwYO39iSK43RSlc-CVxOGiHx5A4gyZv0cju_buj6uRKdH-s_HLToqyVFDWvTVsvugtyEx6VZkG1-GYxTnTbhg4qD5X0mO3yYlF714mkFLCa9StB7hNa7QJ7MbXZjUGaDlw7_zfRDx-fkI6ykG_5Wo3YUlDigbRrfJJifJGwO8zM2x24KEoOoAxl0KTcpvPMnrHSVACAn-8sKPyEeBzvxurEaK_-DZW06MZFThWoddmxtXxtVcEOnNbP4uyUIhxdsuPgzRuOvBzrrDppdY9jmCCf7RNbVrOKrOTVFsFWXOocOhmtoZKDHMFc-tldwILFV5eJaXH_4scJ2EcIScbip3qV52kQw/https%3A%2F%2Fcloudmagic.com%2Fk%2Fd%2Fmailapp%3Fct%3Dti%26cv%3D9.1.28%26pv%3D9.3.5%26source%3Demail_footer_2> _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org<mailto:Sprinklerforum@lists.firesprinkler.org> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org -- Ron Greenman rongreen...@gmail.com<mailto:rongreen...@gmail.com> 253.576.9700<tel:253.576.9700> The Universe is monstrously indifferent to the presence of man. -Werner Herzog, screenwriter, film director, author, actor and opera director (1942-) _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org<mailto:Sprinklerforum@lists.firesprinkler.org> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org -- Ron Greenman rongreen...@gmail.com<mailto:rongreen...@gmail.com> 253.576.9700 The Universe is monstrously indifferent to the presence of man. -Werner Herzog, screenwriter, film director, author, actor and opera director (1942-)
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