We had a similar situation and used the Reliable F1RES49 Pendent, which has a listing of 4”-8” down. Hopefully you have good water.
Taylor Schumacher, CET Security Fire Sprinkler<http://www.j-berd.com/> P.O. BOX 7308 | St. Cloud, MN 56302-7308 3308 Southway Drive | St. Cloud, MN 56301 Office: 320.656.0847 | [email protected]<mailto:[email protected]> From: Sprinklerforum [mailto:[email protected]] On Behalf Of John Irwin Sent: Tuesday, November 21, 2017 5:27 AM To: [email protected] Subject: Interesting issue .. residential sprinklers .. I am working on a project with a lot of 20x20 rooms in dwelling units. I have a concrete deck so my piping will be exposed. I am trying to find a 20x20 solutions but keep running in to road blocks. Maybe someone has an idea. The way I see it, I need one of the following … I need a residential pendent sprinkler that can be installed with a deflector distance from the deck greater than allowed by NFPA 13 OR I need a residential UPRIGHT sprinkler listed for 20x20 spacing OR I need a listed hanger attachment that will allow me to install 1" branch piping tight to a concrete deck. And go. John Irwin DynaFire, Inc.
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