11
7.1.4 Tube collector or start function
If this function is activated, the solar circuit pump is started for the entered time
frame regardless of the actual collector temperature. This allows the medium to
reach the measuring point to determine the collector temperature.
"Basic Setup" menu
Display
Meaning
Value range Factory set-
ting
Line Value
4
1
Special function for the time-control-
led circulation when operating tube
collectors
0 = Off
1 = On
0 = 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°). Therefore, during the holiday period, for exam-
ple, the storage tank is discharged at night to the set recooling temperature.
Make sure not to activate this function together with the backup heating!
"Basic Setup" menu
Display
Meaning
Value range Factory set-
ting
Line Value
0
0
Switches on or off the collector protec-
tion function
0 = Off
1 = On
0 = Off
1
120
°C
Temperature at which the collector
protection function is activated
110 –150°C
120°C
2
0
Switches on or off the recooling
function (only if the collector protec-
tion is on)
0 = Off
1 = On
0 = Off
3
40°C
Temperature to which the storage
tank is recooled once the collector
protection function is activated
30 –90°C
40°C
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.
