1.2
Display
After connecting the controller to the power supply, the current application and firmware ver-
sion appear on the display. After pressing the
key, the start screen appears, which also ap-
pears during operation. This start screen contains the current system scheme, time, date and in-
formation on operation.
1.3
Operating modes
The following operating modes are available:
4
Stand-by:
Stand-by mode
4
Night:
Night mode (reduced operation)
4
Day:
Day mode (rated operation)
4
Auto (stand-by): Automatic mode with switchover between day and stand-by mode
4
Auto (night):
Automatic mode with switchover between day and night mode
Standby mode
The heat exchanger only works when there is a demand for domestic hot water or a demand for
an external set point. The protective functions remain active.
Night mode (reduced mode)
Regardless of the programmed times-of-use, the set points relevant for reduced operation are
used by the controller.
Day mode (rated operation)
The set points for rated operation are used for control regardless of the entered time schedule
and the summer mode.
Automatic mode
During the programmed times-of-use, the controller works in rated operation. Outside these
times-of-use, the controller is in reduced operation or stand-by mode, depending on the set-
tings. The controller switches automatically between both operating modes.
6
EB 5571-2 EN
Operation
60˚C
47˚C
100%
60˚C
48˚C
0%
60˚C
55˚C
59˚C
53˚C
86%
100%
11˚C