"Heating circuit" function
28
2
"Heating circuit" function
The device can be used to control up to two heating circuits on the basis of the outdoor
temperature. These circuits can be mixed or unmixed. You can define separate control
characteristics for each heating circuit.
2.1
Mixed heating circuit
The control characteristics described in the following can be configured only in
the "Basic settings" menu.
With this function, the control system adjusts to the setpoint temperature for the supply
line by actuating the heating circuit pump and the heating circuit mixer according to the
outdoor temperature development.
You can choose between two settings:
•
Linear heating curve
•
Heating curve from a set of curves.
Defining the linear heating curve
The heating curve (thick line) is defined by two vertexes. The first or upper vertex is
formed from the parameters "Supply line temperature max" and "Outdoor temperature
min". The second or lower vertex is formed from the parameters "Supply line temperature
min" and "Outdoor temperature max". The parameters "Supply line max limit" and "Supply
line min limit" are used as absolute limits for the supply line setpoint temperatures of the
upper and lower heating circuits. You can use the parameters "Switch-off day" and
"Switch-off night" to define the outdoor temperature at which the heating circuits are
switched off if exceeded.
