Room temperature controller RTR insert with RTR display cover unit

Referenznummer: 52512000

Heating and cooling operating mode
Modern heat pump systems often also provide the option of cooling rooms. This function is supported by the cover unit by means of the "Heating and cooling" operating mode. In this operating mode, the system permanently regulates the temperature to the set cooling temperature. There are no time programs in cooling mode. The cooling temperature can only be changed via the temperature parameters, and not using the +/- buttons. In conjunction with a room temperature controller insert, cooling mode is activated by applying mains power to input terminal "C". With switch inserts, cooling mode is activated by applying mains power to extension input "1".

Frost protection / temperature drop detection
The frost protection temperature is the minimum temperature to which the system is regulated in order to avoid frost damage. In case of a significant temperature drop, e.g. after opening a window, the system is regulated to the frost protection temperature for a maximum of 30 minutes. For this, the temperature drop detection parameter  must be activated.

Heating optimisation
Heating is started at most 4 hours before the switching time, so that the desired temperature has been reached at the switching time rather than starting to heat up at that time. The display icon flashes during the heat-up phase. Note: Optimised heating up is designed for panel heating/radiators.

Offset
If the system detects that the displayed actual temperature differs from the general room temperature, this parameter can be used to enter a correction value. The actual temperature will then be corrected by this offset value.

Controller adjustment
The control principle should be adjusted depending on the heating system and the insert used.

Two-point control (2P):
The output remains switched on until the selected setpoint temperature has been exceeded by 0.5 °C. The output will not be switched on again until the setpoint value is undercut by 0.5 °C. Since most heating systems respond very slowly, this type of control can entail temperature overshooting.

Pulse width modulated control (PWM):
Optimised for electrothermal actuators. The output is actuated only for a time period (pulse width) that depends on the difference between the setpoint and actual temperature, not permanently. This method brings the actual temperature gradually closer to the setpoint temperature. The cycle time is 15 minutes.

Valve adjustment
This parameter is used to adapt to the electrothermal valve drives. There are drives that are either open (deenergised open, setting NO) or closed (deenergised closed, setting NC) when no supply voltage is applied.

Temperature sensor
The room temperature controller cover features a built-in temperature sensor, which is used to detect the room temperature. With the Bluetooth version, an app can be used to integrate a brightness/temperature sensor. In this case, the internal sensor will be deactivated. In conjunction with a room temperature controller insert a remote sensor can be connected, either to measure the room temperature or limit the maximum floor temperature. The following settings are possible.

• The room temperature is measured using the internal temperature sensor or the BT brightness and temperature sensor.
• The room temperature is measured using the remote sensor. The internal temperature sensor is deactivated.
• The room temperature is measured using the internal temperature sensor and the floor temperature via the remote sensor for monitoring the floor temperature.
  If the maximum floor temperature is exceeded, the floor heating is switched off until the floor temperature has fallen below the maximum value again. This way, an unpleasantly hot floor is avoided.