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ESFR sprinkler system is wet system.  In very cold area without central heating, how could the system be protected without frozen?

Question asked by Lijing Wang on Jan 6, 2017
Latest reply on Jan 12, 2017 by Mike Carter

One of my friends is doing the ESFR sprinkler system design for a high rack storage area without central heating. He wants to know how could we protect the system without frozen? Does NFPA standards have related specifications?

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