10
Controller functions
7.1 General controller functions
The controller compares the temperatures of the various measuring points and op-
timally charges the storage tank. If the collector temperature exceeds the storage
tank temperature, the solar circuit pump is switched on. Monitoring and protection
functions ensure safe operation.
7.1.2 RPM control
The output A1 can be operated using an RPM control.
„Programming“ menu
Display
Meaning
Value range Typical
setting
min
100
Set the minimum pump capaci-
ty using the RPM control
100% = RPM control off
30% – 100% 100%
7.1.3 Independent controller
This function is reserved for output 2 and can be allocated the following functions:
Cooling
◼
Thermostat
◼
Cooling
If the temperature of the storage tank goes over the adjusted maximum storage
tank temperature – 5K, the switch at output A2 is turned on. Switching off takes
place when under the preset temperature.
"Basic Setup" menu
Display
Meaning
Value range Factory set-
ting
Line Value
6
1
The cooling or thermostat function can
also be selected.
0 = Off
1 = Cooling
2 = Heating
0
Thermostat
If the measured temperature is below the target value, output A3 is switched on
until the measured temperature reaches the target value hysteresis.
"Basic Setup" menu
Display
Meaning
Value range Factory set-
ting
Line Value
6
1
The cooling or thermostat function can
also be selected.
0 = Off
1 = Cooling
2 = Heating
0
"Programming" menu
Display
Meaning
Value range Typical set-
ting
min 40°C
Switch-on temperature of the
heating function
20 – 90°C
40°C
dT 10K
Heating function hysteresis
1 – 30K
10K
Settings and changes in
this menu must only be
carried out by a specialised
technician. Incorrect settings can
damage or adversely affect the
function of the solar power
system.
Settings and changes in
this menu must only be
carried out by a specialised
technician. Incorrect settings can
damage or adversely affect the
function of the solar power
system.
