But in that regard, it is not an activation issue, it is only an obstruction issue. Shave it where necessary to not be an obstruction? On Mar 29, 2016 12:07 PM, "Brian Harris" <[email protected]> wrote:
> Brad- > The real issue we're having is the haphazard way the sprayed on insulation > was installed, there's no way to establish minimum & maximum deflector > distances. > > Brian Harris, CET > BVS Systems Inc. > bvssytemsinc.com > > > -----Original Message----- > From: Sprinklerforum [mailto: > [email protected]] On Behalf Of Brad > Casterline > Sent: Tuesday, March 29, 2016 11:23 AM > To: [email protected] > Subject: RE: Tyco Attic Heads > > Nope. Smoothness above the sprinkler only affects activation times, and > the differences are only a few seconds. > Do you worry if the intermediate framing members are 2x4, 2x6, 2x8, or > 2x10 (a 6" variation)? Do you worry if they are perpendicular or parallel > to the throw? No, because min deflector distance for back-to-back at the > peak is 16". This is to get the throw beneath the 'unsmoothness' of the > bottom of the deck. > The U.L. tests of Tyco BB heads 'started' with previously listed QR, EC > heads- only the Deflectors were changed, and the throw patterns at > different pressures were measured. They did that by not changing the bottom > of the deck or changing deflector distance, but by raising and lowering the > Floor :). > > And actually I think a little roughness at the bottom of the deck might > even enhance activation a bit-- but I am certainly no Sprinkler Scientist- > and the Modeling of BB heads activation and patterns I have done has been > rather coarse, i.e., quick and dirty ;) > > b > On Mar 29, 2016 9:46 AM, "Brian Harris" <[email protected]> wrote: > > > I talked with tech support and while he wasn't too concerned about the > > roughness off the insulation he did agree the insulation needs to be > > "shaved" to a uniform depth to assure proper deflector distances. > > > > Brian Harris, CET > > BVS Systems Inc. > > bvssytemsinc.com > > > > > > -----Original Message----- > > From: Sprinklerforum [mailto: > > [email protected]] On Behalf Of Bruce > > Verhei > > Sent: Tuesday, March 29, 2016 10:44 AM > > To: [email protected] > > Subject: Re: Tyco Attic Heads > > > > I like Matt's advice. Tyco may have information from original test > series. > > Sometimes some of conditions are to meet extreme distance or a minimum > > available pressure. > > > > While I'd repeat that Tyco's comments would apply to this particular > > project only, could you post? > > > > Best > > > > Bruce > > > > > On Mar 29, 2016, at 06:41, Matt Grise <[email protected]> wrote: > > > > > > I would call tyco's technical hotline. > > > > > > Matt Grisé PE*, LEED AP, NICET II > > > Sales Engineer > > > Alliance Fire Protection > > > 130 w 9th Ave. > > > North Kansas City, MO 64116 > > > > > > *Licensed in KS & MO > > > > > > 913.888.0647 ph > > > 913.888.0618 f > > > 913.526.7443 cell > > > www. AFPsprink.com > > > > > > > > > > > > -----Original Message----- > > > From: Sprinklerforum > > > [mailto:[email protected]] On Behalf Of > > > Brian Harris > > > Sent: Tuesday, March 29, 2016 8:40 AM > > > To: [email protected] > > > Subject: RE: Tyco Attic Heads > > > > > > "bounce..." > > > > > > Brian Harris, CET > > > BVS Systems Inc. > > > bvssytemsinc.com > > > > > > -----Original Message----- > > > From: Sprinklerforum > > > [mailto:[email protected]] On Behalf Of > > > Brian Harris > > > Sent: Tuesday, March 29, 2016 8:23 AM > > > To: [email protected] > > > Subject: Tyco Attic Heads > > > > > > Working on a project that we've installed Tyco attic heads and the > > > GC > > has now gone in and added roughly several inches of spray on insulation. > > When I say roughly I mean roughly, the depth varies from 6" to 12" > > with no consistency what so ever. I've told them that most of the > > piping will have to be lowered to stay within the required clearances > > but I also think the insulation needs to be "shaved" to a smooth > > consistent finish, obviously that didn't go over so well. Since attic > > heads are considered extended coverage I think it's safe to assume > > they need to be installed per the requirements of NFPA as well, under > > a smooth flat surface. Am I missing something? > > > > > > Brian Harris, CET > > > BVS Systems Inc. > > > Sprinkler Division > > > bvssystemsinc.com<http://bvssystemsinc.com/> > > > Phone: 704.896.9989 > > > Fax: 704.896.1935 > > > > > > _______________________________________________ > > > Sprinklerforum mailing list > > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprin > > > kl er.org _______________________________________________ > > > Sprinklerforum mailing list > > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprin > > > kl er.org _______________________________________________ > > > Sprinklerforum mailing list > > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprin > > > kl > > > er.org > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > > er.org _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > > er.org > > > _______________________________________________ > 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 > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
