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.


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From: Sprinklerforum [] On 
Behalf Of
Sent: Tuesday, August 08, 2017 3:05 PM
To: Sprinklerforum <>
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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