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Settings and changes in
Settings and changes in
this menu must only be
this menu must only be
carried out by a specialist techni-
carried out by a specialist techni-
cian. Incorrect settings can
cian. Incorrect settings can
damage or adversely affect the
damage or adversely affect the
function of the solar power
function of the solar power
system.
system.
10
Controller functions
7.1 General controller functions
The controller compares the temperatures of the various measuring points and
charges the storage tank optimally. If the collector temperature exceeds the storage
tank temperature, the solar circuit pump is switched on. Monitoring and protective
functions ensure safe system operation.
7.1.1 RPM control
The output A1 can be operated using an RPM control.
„Programming" menu
Display
Meaning
Set the minimum pump capaci-
min
ty using the RPM control
100
100% = RPM control off
7.2 Protective functions
The controller is equipped with the following protective functions.
7.2.1 Collector protection
If the storage tank has reached the set maximum temperature and the collector
temperature exceeds the set collector protection temperature (line 1), the solar
circuit pump is switched on. The solar circuit pump is switched off once the collec-
tor temperature is 10K below the maximum value.
In this case, the storage tank is charged up to 95°C regardless of the set maximum
temperature.
7.2.2 Recooling (Holiday function)
The collector protection function is only effective if the storage tank temperature is
below the temperature limit (95°). During a holiday period, for example, the storage
tank must therefore be discharged at night to the set recooling temperature.
Warning: do not activate this function at the same time as backup heating!
"Basic Setup" menu
Display
Meaning
Line
Value
Switches on or off the collector protec-
0
0
tion function
Temperature at which the collector
1
120 °C
protection function is activated
Switches on or off the recooling
2
0
function (only if the collector protec-
tion is on)
Temperature to which the storage
3
40°C
tank is recooled once the collector
protection function is activated
Value range Typical
setting
30% – 100%
100%
Value range Factory
setting
0 = Off
0 = Off
1 = On
110 –150°C
120°C
0 = Off
0 = Off
1 = On
30 –90°C
40°C
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