72
EB 5573 EN
Functions of the heating circuit
6.11 Cooling control
6.11.1 Cooling control with outdoor sensor
When the cooling control function is activated in a control circuit with outdoor sensor, the
four-point characteristic of the corresponding control circuit is automatically activated and
the operating direction of the control output is reversed. In PA1 and/or PA2 the four points
for the course of the set point based on the outdoor temperatures can be adjusted separately
for day and night mode. The 'Base point for return flow temperature' that can be adjusted
with an active return flow sensor determines the point at which a minimum limitation of the
return flow temperature starts: if the measured return flow temperature falls below this value,
the flow temperature set point is raised. The four return flow temperature values in the four-
point characteristic function have no effect.
Functions
WE
Configuration
Cooling control
0
CO1, 2 > F04 - 1
Four-point characteristic
0
CO1, 2 > F11 - 1
Parameters
WE
Parameter level: value range
Outdoor temperature
Point 1
Point 2
Point 3
Point 4
5.0 °C
15,0 °C
25.0 °C
30.0 °C
PA1, 2: –50.0 to +50.0 °C
Flow temperature
Point 1
Point 2
Point 3
Point 4
20.0 °C
15,0 °C
10.0 °C
5.0 °C
PA1, 2: –5.0 to +150.0 °C
Reduced flow temperature
Point 1
Point 2
Point 3
Point 4
30.0 °C
25.0 °C
20.0 °C
15,0 °C
PA1, 2: –5.0 to +150.0 °C
Base point for return flow temperature:
65.0 °C
PA1, 2: 5.0 to 90.0 °C
The limiting factors of the
return flow sensor RüF1/RüF2 (
CO
1, 2 > F03) functions apply
during cooling control as well.
Note
