Thanks, I think I will play it safe and install 2- 2 1/2" hose valves for testing. I need about 550gpm at max demand. Dewayne
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Justin Reid Sent: Wednesday, September 02, 2009 7:09 PM To: [email protected] Subject: Re: Foam test connection Chapter 8 says it is only necessary to the test the 4 heads;but, 5.14 (2007 edition) still says that the test connection shall be "sized" for the low flow and the maximum anticipated flow. I am not sure if this was an oversight, or if the intent is to still provide the capability of testing the maximum anticipated flow through the test connection, even though not required by Chapter 8. The 99 edition required flow tests at the high end and low end of the expected design rate. The wording went away in the 2003 to only be conducted at the minimum design operating pressure (clarified in the Appendix as the 4 heads). 2007 is much clearer now on the testing requirements in Chapter 8. However, the wording in Chapter 5 stayed the same. The typo referencing 5.13 in the 2007 edition, probably comes from "Test Connections" being Section 5.13 in the 2003 edition. On Wed, Sep 2, 2009 at 8:40 AM, Dewayne Martinez <[email protected]> wrote: > I have a balanced pressure system. What confused me was that 5.13 is > about supervision not testing. > I got in touch with the manufacture and they felt it would only be > necessary to test the 4 head flow since the proportioners typically > have trouble getting the correct mix at low flows. > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Thom > McMahon > Sent: Wednesday, September 02, 2009 10:22 AM > To: [email protected] > Subject: RE: Foam test connection > > NFPA 16, 2007 edition say's > > 5.14* Test Connections. System test connections shall be sized to > accommodate both the low flow of the proportioner and the maximum > anticipated flow through the proportioner.(Also see A5.14) > > Then some special requirements appear in chapter 8 > > 8.4.1.4.4 For balanced pressure and positive pressure proportioning > systems, flow tests shall be permitted to be conducted through the > test connections required in Section 5.13. For other proportioning > system types, full-flow testing of system and discharge devices is > required to properly evaluate the proportioning system. > > So the answer is generally yes, but if your system is not a balanced > or positive pressure proportioning system full flow testing is > required, I'm guessing thru the system? > > Anyone out there on the 16 committee? > > Thom McMahon, SET > Firetech, Inc. > 2560 Copper Ridge Dr > P.O. Box 882136 > Steamboat Springs, CO 80488 > Tel: 970-879-7952 > Fax: 970-879-7926 > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Dewayne > Martinez > Sent: Tuesday, September 01, 2009 5:19 AM > To: [email protected] > Subject: Foam test connection > > I am a bit confused on the test connection for a foam-water sprinkler > system. > Does it only have to satisfy the minimum flow of the 4 most remote > sprinklers or does it also have accommodate the anticipated maximum > flow through the proportioner? > Thanks, > Dewayne > _______________________________________________ > 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]<to%3ASprinklerforum-reques > [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]<to%3ASprinklerforum-reques > [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]<to%3ASprinklerforum-reques > [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) _______________________________________________ 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)
