TAC Xenta 121-FC Programmable Fan Coil Controller Technical Data Sheet

This technical data sheet details the specifications, configuration options, and application examples for the TAC Xenta 121-FC, a programmable fan coil controller supporting both 2-pipe and 4-pipe HVAC systems. It covers supply voltage variants (24 V AC and 230 V AC), input/output capabilities, interoperability standards (LonMark, LonTalk), and advanced control functions such as economizer, exception modes, and flexible valve/fan sequencing.