Control 4 C4-KNX-THERM Series User Manual page 14

The Control Element 2/4-fold with RTC (room temperature controller) FM (flush-mounting)
mounts on a flush-mounted bus/network coupler (C4-KNX-BC).
The room temperature controller senses the current room temperature and regulates the
heating or cooling. The device also serves to control two-/four-pipe systems (2-/4-pipe fan coil
units) and conventional air-conditioning units. Additionally, further switch-control telegrams can
be sent to KNX actuators, to activate a connected ventilator, for example.
Hotel management systems can gain direct access to the room temperature controller via KNX
and activate controllers in the room. The fan speed level can also be selected manually via
buttons (forced operation).
This makes it possible to very quickly adjust the temperature in a hotel room to the individual
wishes of the guests. The device supports the full function for international hotel applications. It
can function in the operating modes "heating/cooling", "only heating" and "only cooling".
For operation and display, the room temperature controller is equipped with push-buttons and a
rotary control element. An LCD display serves to indicate the current operating states and
values. The use of simple icons on the buttons and in the display allow the room temperature
controller to be operated easily and intuitively.
The Control Element 2/4-fold with RTC FM can, depending on the configuration, be used in a
variety of ways:
■ As a normal sensor with the freely programmable functions.
–
Here an additional button must be pressed to switch to the RTC adjustment level (*).
■
As pure room temperature controller.
–
Here the sensor is in the RTC adjustment level right from the start.
(*) There is the added option of setting the setpoint adjustment on the switching/dimming
operating level (1st level without actuating the additional button). The On/Off +
heating/cooling switchover function is carried out with the "Switching" button function.
Notes on the instruction manual
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