The following wiring diagrams are available for the VRA range:
UDSA4E-VRA-4E with Brahma TC340A - Wiring Diagram - https://www.reznor.co.uk/wp-content/uploads/2023/12/UDSA-4E-VRA-4E-with-Brahma-TC340A-SmartCom-Interconnect-Drawing.pdf
What wiring diagrams are available for the VRA?
Information on wiring diagrams for Reznor products