The thermostat operating mode can be influenced in different ways (see Different ways to influence the operating mode), e.g. mode button, window contact, BACnet/Modbus, etc. Specific heating and cooling setpoints are assigned to each operating mode.


Room operating mode switch

The thermostat returns the effective room operating mode on BACnet/Modbus.

 

The following operating modes are available:

 

Operating mode

Icon

Description


Presence detector

Comfort

In Comfort, the thermostat maintains the Comfort setpoint. This setpoint can be defined via P20 and P21.

Also, it can be locally adjusted via the +/- buttons or remotely via BACnet/Modbus.

The thermostat switches to Comfort when:

  • The presence detector (local or via BACnet/Modbus) is active (room is occupied) *)


Keycard

Economy

A preset setpoint in Economy can be defined via P22 and P23.

The thermostat switches to Economy when:

  • The mode button is pressed (only possible if P10 is set to 2),
  • Economy is sent via BACnet/Modbus,
  • keycard is removed.
    The contact can be connected to multifunctional input X1 (RDF4..BN) / digital input D1. Set P60/P62 to 9 (P10 is irrelevant) *)


Window contact

Protection

In Protection, the system is:

  • Protected against frost (factory setting: 8 °C, configurable via P50)
  • Protected against overheating (factory setting: OFF, configurable via P51)

No other operating mode can be selected locally if Protection is commanded via BACnet/Modbus object "Forced operating mode for Protection". is displayed.

The thermostat switches to Protection when:

  • The mode button is pressed
  • Protection is sent via BACnet/Modbus
  • The window contact is active (open window)
  • "Window contact" is sent to thermostat via BACnet/Modbus. *)

Note

  • Operating mode setting upon power failure: If the thermostat is disconnected from power supply and reconnected, the device returns to the operating mode before powering failure if P80 = 1. If P80 = 3, the device is in Protection mode. If P80 = 2, the device resumes Comfort.
  • *) Hotel presence detector, presence detector or window contact: Use only one input source, either local input X1 (RDF4..BN)/D1 or BACnet/Modbus. Local input has higher priority.