Hello Jonathan,
I did this back at the end of March, 2023. I have found some photos. Hopefully they can help you. See below.
BVM-280 before picture:
NOTE: Your line colors may differ from mine.
On BVM-280 labeled: KKRaab (left to right)
RED114Y installed:
- Move the BVM-280 right “a” (white for me) and “b” (green for me) to the RED114Y, “X" (left) and “X” (right), respectively.
- Run a wire (red for me) from the RED114Y “X” (left) to the BVM-280 right “a”.
- Run a wire (black for me) from the RED114Y “X” (right) to the BVM-280 “b” (far right).
- Connect the purple and blue from the Nuki Opener to the RED114Y ctrl-in as shown in the picture.
- Connect the yellow from the Nuki Operner to the BVM-280 “K” (left).
- Connect a jumper wire from the BVM-280 “K” (right) to the BVM-280 “a” (right). This jumper is black in my picture.
- Be sure to set S1 to “A” and S2 to “0” on the Elcom RED114Y.
BVM-280 After:
For more help on RED114Y see also: Elcom BVF-510
Regards,
Denis