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EC sprinklers and concrete tee

Question asked by torben.guldbaek.jensen on Sep 22, 2020
Latest reply on Sep 23, 2020 by nocivus

I would really appreciate someone answering this query.


Example Sprinkler - Tyco DS-2 11.2K dry barrel pendent


Could you please confirm or reject the following for compliance with the NFPA.


Baffles described under UL compliance for concrete tees on the Tyco Data Sheet  are ONLY required when Section (1), (2) or (3) cannot be achieved?


This UL Approval clause is typical to all the EC sprinklers I could find. I am assuming since the NFPA 13 mentions nothing about baffles in Section 11.2.4 and we comply with (2), that we don't need these baffles described on the data sheet.


The data sheets mention tees with a depth of up to 762mm which lowers the sprinkler further than the 559mm permitted by the NFPA; in which case you would then require the baffles from 560mm thru 762mm.


Kind Regards.