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LFA/S 2.1 Fan Coil Actuator Manual

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This document describes the ABB STOTZ-KONTAKT LFA/S 2.1 fan coil actuator, which controls 3- or 5-step fans and valves for heating/cooling systems via the ABB i-bus® EIB/KNX. It supports multiple system configurations (2-, 3-, or 4-wire), offers four operating modes (frost/heat protection, night, comfort, standby), and provides up to 8 outputs with a rated current of 6 A.

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