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Wiring compatibility with Bosch Unit

WestMichigan
Community Member

This is for a Bosch 2 stage heat pump application.  The thermostat below shows the current wiring.  Assuming 2 cooling states, 2 heat stages, and auxiliary heat how would these wire translate?  In particular the white W3 wire.  I think the others are pretty self explanatory.  Ignore the H, DH, and EX contacts since they were never used.  If the H line could be used that would be a plus, but it isn't necessary.

IMG_5240.jpg

From the Bosch manual

WestMichigan_0-1674077660637.png

 

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