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ABB Caldion CAR/U4 Room Temperature Controller Technical Reference Manual

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This technical reference manual provides comprehensive installation, commissioning, and operational guidance for the ABB Caldion® CAR/U4.x.x.x-xx series room temperature controllers, supporting both 2-pipe and 4-pipe fan coil systems with On/Off or 0~10V control. It covers safety, wiring diagrams, parameter configuration, group object descriptions, and standalone or network mode operation for KNX building automation.

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