General
Other bus systems	None
Mounting method	DRA (DIN-rail adapter)
Width in number of modular spacings	4
Max. number of switching contacts	4
Degree of protection (IP)	IP20
Bus system KNX
Bus system KNX radio
Bus system radio frequent
Bus system LON
Bus system Powernet
Local operation/hand operation
With LED indication
Suitable for C-load
Bus connection included

Fan coil actuator for KNX REG plus Features: Fan coil actuator for controlling fan coil units that are used to air-condition rooms. The actuator receives telegrams, e.g. from a room temperature controller, and converts the control value telegrams into equivalent fan speeds and valve positions. Connection of a fan coil unit with up to six fan speeds or connection of two fan coil units with up to two fan speeds each in 2-pipe systems. Manual operation. Construction site operation: Outputs can be operated manually without bus voltage, only with the operating voltage. Operating modes for heating or cooling operation, or combined heating and cooling operation. 2-pipe or 4-pipe operation. 2-pipe system heats or cools via a common water circuit. 4-pipe system consists of separate flow and return for the heating and cooling system. Individual or hierarchical switching of the fan speeds. Feedback, output display, locking function for each channel, level limitation. Behavior in the event of a bus voltage failure or bus mains voltage failure and can be configured after an ETS programming operation. Limit values can be set. Cyclic or event-oriented sending. Free channels can be used for switching functions, e.g. room lighting. Notes: VDE approval in accordance with EN 60669-1, EN 60669-2-1. Installation on DIN rail.