This revision of ANSI/UL 199 is being issued to include the following changes in requirements:
Revision of the "Operation - Lodgement Test" in Section 32
Sprinkler Assembly Load Measurement (Section 19.4)
Revision to Heptane Specifications (Add 5.14.1, revise 56.1.5 and 58.4.2, and delete 58.4.10)
Revisions to Bring Definitions in Closer Alignment with NFPA 13
Revisions to Clarify Requirements and Maintain Consistency with Existing Test Practices
Miscellaneous Editorial Clarifications
Revisions Related to Storage Sprinkler Fire Test Methods and Requirements
Revisions to Modify Test Pressure Requirements After Exposure Tests