RC21:
Influence of the room temperature on the reference, parallel shift of the characteristic curve by the control dial, influence on the reference
flow by the operating mode switch. Operating modes of the RC21 (Switch) and significance for the HCC:
Auto = Set reference,
Day = Reference + daily correction,
Night = Reference night reduction
For detailed instructions on how to connect °CALEON or an RC21, See " °CALEON Room Controller " on page 23
Sensor input (S1-S6, VT1, VT2):
Use of a sensor input as room controller with different functions (see "Sensor Type").
Set room controllers have no influence on the setpoint program!
Thermostat (X)
The room controller or sensor input is selected here.
When using a °CALEON: select the room set in the °CALEON.
When using an RC21: select RC21-Local 1 and then select RC 1 Temp. 1 and RC1 Contr. sensor inputs used - See " RC21 Room ther-
mostat with remote control " on page 26.
When using an RC20 or other thermostats and seasonal switches: select the sensor input used here and then select the exact function
under "sensor type".
Sensor Type
If a sensor input is selected for "Thermostat (X)", it must be set here how exactly this input is to be used.
RC20: measurement of room temperature and influence on reference
Contact: Open = heating circuit Off, closed = heating circuit
Season: Closed= cooling, Open = heating
RC 1 Temp. 1
Only appears, if an RC21 has been set in "Thermostat (X)".
Select here the sensor input that you use for the temperature sensor (Terminal 1) of the RC21.
RC 1 contr.
Only appears, if an RC21 has been set in "Thermostat (X)".
Select here the sensor input that you use for the remote control (Terminal 2) of the RC21.
Room Controller
This value is used to appoint the amount of influence the room temperature has on the reference flow temperature, as a percentage. For
each degree deviation between room temperature and set point temperature, the percentage set here is added from the calculated set
flow temperature to the set flow temperature or subtracted from it until the min. or max flow values.
Example: Reference room temp.: e.g. 25 °C; room temp.: e.g. 20 °C ±5 °C. Calculated reference temp.: e.g. 40 °C: room controller: 10
%= 4 °C 5 X 4 °C= 20 °C. Accordingly, 20 °C are added to the reference flow temperature, giving 60 °C. If the value is higher than the
one set in max. flow temp, the resulting temperature is the one set in max. flow temp.
Room Reference Day
The desired room temperature for day mode.
In combination with the %-value set under "room controller", the difference between reference and actual room temperature influences
the reference flow temperature. If the room controller is set to 0 %, this function is deactivated.
For °CALEON room controller without influence.
Room Reference Night
The desired room temperature for night mode.
In combination with the %-value set under "room controller", the difference between reference and actual room temperature influences
the reference flow temperature. If the room controller is set to 0 %, this function is deactivated.
For °CALEON room controller without influence.
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