We had this issue in AZ with the interstitial sprinklers. They were only rated at 175F. That is a problem in Arizona attics. They have now come out with 200F sprinklers. I questioned one of the manufacturers at one time and they referred me back to the chart in NFPA 13 that says you must use intermediate temp and they said that the 175 was fine. However, there was little response when I said the 50F above ambient temp. Attics in AZ get above 125F without much trouble.
So, to your question, I believe there were some stories of activations due to excess temps. Depending on your location and temperatures, it may not be as much of an issue. Travis Mack, SET MFP Design, LLC 3356 E Vallejo Ct Gilbert, AZ 85298 480-505-9271 fax: 866-430-6107 <mailto:email:tm...@mfpdesign.com> email:tm...@mfpdesign.com <http://www.mfpdesign.com/> http://www.mfpdesign.com <https://www.facebook.com/pages/MFP-Design-LLC/92218417692> https://www.facebook.com/pages/MFP-Design-LLC/92218417692 Send large files to us via: <https://www.hightail.com/u/MFPDesign> https://www.hightail.com/u/MFPDesign LinkedIn: <https://www.linkedin.com/in/travismack> https://www.linkedin.com/in/travismack **PLEASE NOTE NEW ADDRESS** From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Scott Futrell Sent: Tuesday, August 8, 2017 1:16 PM To: sprinklerforum@lists.firesprinkler.org Subject: RE: 175 degree sprinks in attic. Todd, Glass bulb or fusible link? I’ve documented 155°F and 165°F sprinklers operating in attics, but I don’t think I’ve seen a 175°F. I’ve also documented fusible link, ordinary temperature-rated sprinklers operating in unconditioned attics. I’m aware that not all attic sprinkler op’s are reported or documented though. Scott Office: (763) 425-1001 x 2 Cell: (612) 759-5556 From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of fpdcdes...@gmail.com <mailto:fpdcdes...@gmail.com> Sent: Tuesday, August 08, 2017 3:05 PM To: Sprinklerforum <sprinklerforum@lists.firesprinkler.org <mailto:sprinklerforum@lists.firesprinkler.org> > Subject: 175 degree sprinks in attic. Has anyone know of any issues with 175 degree sprinklers in an unheated attic space instead of 200 degree? Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 <tel:860-535-2080> (ofc) 860-553-3553 <tel:860-553-3553> (fax) 860-608-4559 <tel:860-608-4559> (cell)
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