– Switching from the heating setpoint to the cooling setpoint and vice-versa
occurs when the room temperature reaches the adjusted limitation (P014 or
P015) of the inactive sequence. E.g., the thermostat is in heating
sequence and runs on the heating setpoint. When the room temperature
reaches P015, the thermostat switches to cooling and runs on the cooling
setpoint, as long as the room temperature does not drop below P014.
With the default setting (absolute setpoints) of the setpoint display, the Comfort
setpoint is displayed as absolute temperature value, e.g. 22 °C and can be
adjusted within the selected limitation. If the relative setpoint (P104 = 2) is selected,
the Comfort setpoint can be adjusted via rotary knob from -3 K to +3 K.
The relative setting range ±3K is fixed, but can be limited via P013 (min Comfort
setpoint) and P016 (max Comfort setpoint) as needed.
During relative setpoint selection, the value is displayed on the 2
nd
line of the
display.
The relative setpoint can be selected only when the Comfort concept (setpoint
concept: P010 = 1) is selected.
Use P019 and P020 to adjust Economy mode setpoints.
The heating setpoint is 15 °C (factory setting), and the cooling setpoint is 30 °C.
Use P100 and P101 to adjust the Protection mode setpoints.
The heating setpoint is 8 °C (frost protection, factory setting) and OFF for cooling.
If a setpoint (Economy or Protection) is set to OFF, the thermostat does not
control the room temperature in the corresponding mode (heating or cooling). As
a result, there is no protective heating or cooling function and thus risk of frost
during heating or risk of overtemperature during cooling!
The Economy setpoints (P019, P020) are accessible at the Service level; the
Protection setpoints (P100, P101) are accessible at the Expert level.
4.3.2 Setting and adjusting setpoints
Room temperature setpoints can be…
● Set during commissioning
● Adjusted during runtime
The source can be one of the followings:
● Local HMI
● KNX tool (RDG2..KN)
● Central control unit
● Siemens smartphone application PCT Go
The thermostat saves the setpoints to:
● EEPROM in the form of parameters
● Runtime memory
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