Baxi heat pumps have the RS485 connections within the indoor controller.
In the Baxi indoor controller make the following RS485 Modbus connections:
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Baxi in the middle of the RS485 cable runBaxi at the end of the RS485 cable run
Guidance
- Connect both screened drain wires together, insulate and carefully locate it at the edge of the PCB to reduce the chance of a short-circuit.
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RS485 termination within the Passiv Programmer (see the Installation guide page 9)
Guidance
- Do NOT use the RS485 termination within the Passiv Programmer (see the Installation guide page 9)