Bard 8403-068 - Siemens DDC Interface

Bard part 8403-068 is an OEM Siemens DDC interface used on certain Bard wall-mount heat pump and air conditioner control options to provide a reliable connection point between the unit’s low-voltage control circuits and a building automation or DDC system. When a site uses multi-stage HVAC control from a central controller, this interface helps route call signals correctly so the Bard unit stages and sequences as intended, reducing nuisance operation and troubleshooting time. This replacement is best matched by verifying the unit model, control option, and wiring diagram in the Bard service literature before ordering, since DDC interface usage is option-specific and may vary by unit series.

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(844) WALLMOUNT (844-925-5668)