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Preaction system connection to feeding pipe of sprinkler system under the ceiling

Question asked by walpas on Jan 17, 2019

Can preaction system with DV-5 Deluge Valve Double Interlock be connectet directly to the feeding pipie of under ceiling instalation ( DN 150 pipie) or it shall have individual connection to the mains? 

The preation system is intend to be ca. 3700l/min (EH1 12,2 mm/min, 232m2),  protected area is  c.a 350m2.

 

Can I consider this case as:

 

NFPA 13(2019) 8.1.3 Auxiliary Systems. A wet pipe system shall be permitted to supply an auxiliary dry pipe, preaction, or deluge system, provided the water supply is adequate. ?

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