Standard 412, Edition 5
UL 412

Standard for Refrigeration Unit Coolers

UL CSDS Proposal Edition 5 Published Date: April 27, 2012 Last Revision: June 14, 2022

Summary of Topics b0412_5_20120427_sum.html

Subject 412

Bulletin Dated: April 27, 2012


The following changes in requirements to the Standard for Refrigeration Unit Coolers, UL 412, are being proposed:

1. Clarifications to Table 48.1, Tests on Nonmetallic Materials

2. Clarifications to Section 71, Production Line Pressure Test

3. Proposed addition to clarify temperature measurement stability requirements, revisions to clarify the dielectric voltage-withstand potential for extra-low-voltage circuits, clarification of refrigerant designation marking requirements

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