I’ve not seen the nominal 200f ESFR heads have false operations near unit heaters.
Several knowledgeable sprinkler people have over time stated to me that the unit heater cautions are out of date. They’re based on archaic units that were horribly inefficient. Many are still in use. New? I don’t think it’s possible to buy a 55% efficient unit heater. No one is a constituency to revisit the standard. Best. Bruce Verhei > On May 2, 2018, at 09:52, Kyle.Montgomery <[email protected]> wrote: > > Is it possible to have the unit heaters mounted more than 7 feet BELOW the > sprinkler heads? That allows you to use intermediate temp heads [see Table > 8.3.2.5(a)]. > > This has worked for us in the past. If they are mounting the unit heaters to > columns, that should be feasible. This would be option 1 if it were my job. > > -Kyle M > > From: Sprinklerforum [mailto:[email protected]] > On Behalf Of Don Casey > Sent: Wednesday, May 2, 2018 8:27 AM > To: [email protected] > Subject: [EXTERNAL] RE: ESFR sprinklers near unit heaters > > Have you confirmed what the temps are expected to be below the unit heater? > The manufacturer’s data (or the mech engineer) may be able to provide this > info. > > Cheers > Don > > > From: Sprinklerforum [mailto:[email protected]] > On Behalf Of Tony Silva > Sent: 2018/05/02 11:23 AM > To: [email protected] > Subject: Re: ESFR sprinklers near unit heaters > > Even if in the 7 foot unit heater zone, with the possibility of a sprinkler > being activated? Would it be a lesser evil if a non-ESFR 286 deg.F sprinklers > having the same k factor as the ESFR sprinklers are used only near the unit > heaters with the rest of the system being ESFR? > > Tony > > On Wed, May 2, 2018 at 8:59 AM, Mike Hairfield <[email protected]> wrote: > Use the 212 deg. ones. > > ASCOA used to make a 286 deg. one but they are out of business. > > Mike > > > From: Sprinklerforum <[email protected]> on > behalf of Tony Silva <[email protected]> > Sent: Wednesday, May 2, 2018 10:57 AM > To: [email protected] > Subject: ESFR sprinklers near unit heaters > > Are there any ESFR sprinklers rated for 286 deg.F? If not, how would you > locate them near unit heaters when it is next to impossible to maintain a > minimum 7 feet clearance? How have others solved this problem? > > Tony > > _______________________________________________ > 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
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