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Question about UL 2775 and NFPA 2010 (Fixed Condensed Aerosol Extinguishing Systems)

Question asked by goods201 on Jun 18, 2019

Regarding for Class A Wood cribs Extinguishing test in UL 2775 sec. 49.2 (or NFPA 2010)

The UL 2775 test method is very different with UL 2166 or 2127 (Halocarbon Clean Agent or Inert Gas Extinguishing Systems), wood crib size, ignition fuel, pre-burning time and etc.....

If it's because of characteristics of each agent system,

Then Is there any difference between fire detection criteria of two systems, installation location, or protection object

(for example, specific detectors for early detection or fast reponse as well as Heat and smoke detector)