Is full flow required at the acceptance test of a deluge system or just during annual testing?
If you are referring to a system with open water spray nozzles, then yes it is required a full flow test during acceptance testing. Also, operational test are required annually by NFPA 25.
However if you are referring to a deluge sprinkler system, NFPA 13 requires only that the automatic operation of the deluge valve be tested.
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