UL 1247 PDF
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UL Standard for Safety Diesel Engines for Driving Stationary Fire Pumps – Sixth Edition; Reprint with revisions through and including August 14, 2025
1 Scope
1.1 These requirements cover diesel engines for driving centrifugal fire pumps.
1.2 The engines covered by these requirements are intended for installation and use in accordance with the Standard for the Installation of Stationary Fire Pumps for Fire Protection, NFPA 20.
Summary of Topics
This revision of ANSI/CAN/UL 1247, dated August 14, 2025, includes the following changes in requirements:
– Allowance of UL 969 Marking and Labeling Systems; 4.2, 24.1A
– Mechanical Fuel Managed Engines with an Electrical Means to Control Engine Speed; 8.2.1, 21.4.4
| Edition | 6 |
|---|---|
| Published Date | November 02, 2023 |
| Last Revision | August 14, 2025 |
| Language | English |






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