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6.5 Col.- Alarm
(solar only)
If this temperature is exceeded at the collector sensor when the solar pump is on a
warning or error message is triggered. A warning message is shown in the display.
Collector alarm settings range: on / off / Default: off
Col. alarm - setting range: 60 °C to 300 °C / Default: 150 °C
Protective functions
Hydraulic variants are selected in menu “7.1 Program selection”
Hydraulic variant cooling:
If „CProt Ton“ is exceeded at S1, the pump at R1 is switched on to cool the collector by
heating up the storage tank.
If the storage tank S2 reaches „CProt Tmax storage“, R1 is switched off.
Once the storage tank at S3 exceeds TsetS3, cooling at R2 is switched on till „TsetS3“-
hysteresis is reached.
6.4.1 Cooling
In hydraulic systems with solar when the recooling function is activated excess energy
from the storage tank is fed back into the collector. This only takes place if the temper-
ature in the storage tank is higher than the value “Recool Tsetpoint” and the collector
is at least 20°C cooler than the storage tank and before the storage tank temperature
has dropped below the value “Recool Tsetpoint”.
Recooling settings range: on / off / Default: off
Recooling Tset settings range: 0°C to 99°C / Default: 70°C
Caution
This function causes energy to be lost via the collector! The
recooling should only be activated in exceptional cases.
6.6 Recooling (solar only)
