Reliable Single Interlock Preaction System Manuale di Servizio Pagina 43

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Page 43
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: [email protected]
February, 2010
PREACTION SPRINKLER
SYSTEM
NOTE: Section 6.9.2.3 of NFPA 13† requires the alarm apparatus for preaction systems to consist of
alarms actuated independently by the detection system and the flow of water (Figures 20a-20c). Preaction
systems activated by pilot sprinklers are not required to have an independent detection system alarm.
Figure 20a: Preaction System with Pilot Line Loss of Air Activates General Alarm
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