User Manual Appendix D
GFK-2958L May 2021
Product Certifications and Installation Guidelines for Conformance 524
D.1 UL Class 1 Division 2 Hazardous Areas Requirements
The following statements are required to display for Class I Division 2 Hazardous Locations:
1. EQUIPMENT LABELED WITH REFERENCE TO CLASS I, GROUPS A, B, C, and D, DIV. 2 HAZARDOUS
LOCATIONS IS SUITABLE FOR USE IN CLASS I, DIVISION 2, GROUPS A, B, C, D OR NON–
HAZARDOUS LOCATIONS ONLY.
2. WARNING – EXPLOSION HAZARD – SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY
FOR CLASS I, DIVISION 2.
3. WARNING – EXPLOSION HAZARD – DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN
SWITCHED OFF OR THE AREA IS KNOWN TO BE NON–HAZARDOUS.
4. EQUIPMENT SHALL BE INSTALLED INTO AN ENCLOSURE THAT IS ONLY ACCESSIBLE WITH THE USE
OF A TOOL
D.2 ATEX Zone 2 Hazardous Areas Requirements
To maintain compliance with the ATEX Directive, an RSTi-EP system located in a Zone 2 area (Category
3) must be installed within a protective enclosure meeting the following criteria:
• IP54 or greater
• Mechanical strength to withstand an impact energy of 3.5 Joules
• Only accessible with the use of a tool
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