8 Setting multi-function controllers (MFC)
Depending on the hydraulic layout, switching outputs R0, R1, R2 and R3 can be used as
multi-function controllers (MFC). These can be set irrespective of the basic functions of the
controller.
You can assign the following functions to the multi-function controllers:
• "Cooling" function
• "Heating" function
• "Temperature difference controller" function“.
You can set the parameters of the multi-function controllers in the "Basic settings"
menu with the values P:21: to P:32: . The following provides a description of the
8.1 Setting the "Cooling" function
In the case of the "Cooling" function, the switching output of the multi-function controller
switches on as soon as the preset switch-on temperature is exceeded. If the temperature
drops below the lower limit of the preset temperature range (hysteresis), the switching
output of the multi-function controller switches off.
The "Basic settings" menu allows you to set the following parameters:
• P:30: MFC R4 function at switching output R0
• P:31: Selection of the sensor for the source for MFC R4
The "Program" menu allows you to set the following parameters:
• Switch-on temperature of the "Cooling" function
• Hysteresis of the "Cooling" function
• Time window 1 (2, 3): Start
• Time window 1 (2, 3): Stop.
8.2 Setting the "Heating" function
In the case of the "Heating" function, the switching output of the multi-function controller
switches on as soon as the temperature falls below the preset switch-on temperature. If the
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