Hello Herb, NFPA 13D defines a multipurpose sprinkler system as serving both domestic and fire protection needs in Section 3.3.9.3. Further, Section 6.3.3.1, states "Piping connected to the system that supplies only plumbing fixtures shall comply with local plumbing and health authority requirements but is not required to be listed."
I would also point out that in most cases, the vast majority of Uponor PEX-a tubing that is used in the multipurpose systems is in fact UL1821 listed, including the piping supplying the plumbing fixtures. Please feel free to contact me directly if you would like to discuss more fully. Eric Skare Product Manager Fire Safety Systems Uponor 5925 148th Street West, Apple Valley, MN 55124 Tel: 952-997-4241 Mobile: 612-345-0073 Fax: 952-891-2008 e-mail: [email protected] Web: www.uponor-usa.com IMPORTANT NOTICE: This correspondence is not a Formal Interpretation issued pursuant to NFPA Regulations. Any opinion expressed is the personal opinion of the author and does not necessarily represent the official position of the NFPA or its Technical Committees. In addition, this correspondence is neither intended, nor should it be relied upon, to provide professional consultation or services. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Herb Sent: Wednesday, January 26, 2011 3:31 PM To: [email protected] Subject: RE: 13D Multipurpose Inspection Mike It's been a while since we've talked. I have come across some interesting stuff lately regarding multipurpose systems and wanted to run it by you. I have plumbers and the mfg rep from Uponor telling me that it is perfectly legal and acceptable to install a normal domestic plumbing system using non listed PEX pipe and non UL listed (1821) fittings and tie it into the sprinkler heads. They say the way they read the code (they haven't been able to identify the code number yet) as long as the fitting with the sprinkler is listed, the 'T' off the plumbing system is listed, and the PEX in between is listed they are legal and conforming to code. This seems wrong to me. It defeats the purpose of requiring the fire sprinkler system to be composed of UL 1821 listed components if 95% of the pipe and fittings between the incoming water and the sprinkler system is not listed for fire. Comments? Herb Schairbaum Blue Water Fire Sprinklers 253-279-3603 253-927-8781 Fax [email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
