I don't know if your system was installed to the requirements of NFPA 13D (For single family homes, or 13R for some other residential structures.
If Iit was to 13D, I don"t no applicable language. If it is to 15R, the following from the latest edition: A.10.2.2 <http://nfpacodesonline.org/NFPA/a/c.html/nfpa_13r/annex_explanatory_material/10_2_2/53> piping, such as listed CPVC, or flexible piping, the sprinkler system should be filled with water. The *air* should be bled from the highest and farthest sprinklers before the test pressure is applied. This is from the annex (appendix to us ordinary folks), and is a recommendation, not a requirement. In any event, the reason for keeping air under pressure out of the piping is that if it bursts, it can produce projectiles. If the pipe is full of water, and no air, if the pipe bursts there are no projectiles. Of itself, air in the pipes will not cause it to break. Ed Vining On Tue, Oct 27, 2009 at 4:41 PM, <[email protected]> wrote: > I'm not sure how this email forum works. I'm sending this out blind > hoping one of you pros has some advice for me. > > I am a homeowner in a three-story townhouse. Recently, a company did > some minor modification to our fire sprinkler system - moving a > couple of heads for a basement remodel. When they were done with the > pipe and heads, they simply re-pressurized the system without > bleeding out the air trapped in the lines. From what little I know > about it, I thought this step was very important to eliminate any > pressurize air in the system and preventing dangerous surge > pressures. It says so in big bold type on the product spec sheet for > the CPVC pipe. When I asked the installer he said they don't need to > bleed it, but couldn't explain why not. > > Before I go raising a stink about it, I want to know if your forum > agrees that it's not necessary; or do I need to pester them into > doing it correctly. > > Thanks. > _______________________________________________ > 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%[email protected]> > (Put the word unsubscribe in the subject field) > -- Ed Vining 4819 John Muir Rd Martinez CA 94553 925-228-8792 _______________________________________________ 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)
