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ECONCEPT SOLAR ST
Hot Water Tank Cooling function (solar collector overheating prevention)
This function depends on the Tank cooling parameter value (Installer parameter, default value equal to 0=Off); also, if
the System Cooling function is active (Collector and Hot Water Tank), the latter has priority over the Hot Water Tank
Cooling Function .
During normal operation, if the temperature of the Hot Water Tank Sensor is higher than the Tank max. temperature
parameter value (Installer parameter, default value equal to 60°C) and lower than the Hot water tank limit temperature
parameter value (Installer parameter , default value equal to 80°C) then the ECOTRONIC tech regulator leaves the So-
lar Circulating Pump on to prevent overheating of the solar collector.
If the temperature of the Hot Water Tank Sensor becomes higher than or equal to the Hot water tank limit temperature
parameter value (Installer parameter , default value equal to 80°C) and if the temperature of Solar Collector Sensor S3
is lower than the Hot water tank limit temperature (Installer parameter, default value equal to 80°C) – 5°C then the ECO-
TRONIC tech regulator activates the Solar Circulating Pump to cool the hot water tank.
To signal this mode, the Hot Water Tank symbol will start flashing .
Hot Water Tank Limit Temperature function
The Solar Circulating Pump will be deactivated if the temperature of the Hot Water Tank Sensor becomes higher than or equal
to the Hot water tank limit temperature parameter value (Installer parameter, default value equal to 80°C); in this case, as well
as shutting down the Solar Circulating Pump, the ECOTRONIC tech regulator must also close the shutter .
To signal this mode, the Solar Circulating Pump symbol will go off, and the Shutter symbol will be lit up.
The function ends when the temperature of the Hot Water Tank Sensor becomes lower than the Hot water tank limit
temperature parameter value (Installer parameter, default value equal to 80°C) – 2°C.
Solar Collector Limit Temperature function
The Solar Circulating Pump will be deactivated if the temperature of Solar Collector Sensor S3 becomes higher than or
equal to the Collector limit temperature parameter value (Installer parameter, default value equal to 140°C); in this case,
as well as shutting down the Solar Circulating Pump, the ECOTRONIC tech regulator must also close the shutter .
To signal this mode, the Solar Circulating Pump symbol will be off, the Shutter symbol lights up and the symbol S3 above
the collector will start flashing .
The function ends when the temperature of Solar Collector Sensor S3 becomes lower than the Collector limit tempera-
ture parameter value (Installer parameter, default value equal to 140°C) - 2°C.
Solar Collector Cold recognition function
This function depends on the Collector minimum limit parameter value (Installer parameter, default value equal to 0=Off).
During normal operation, if the temperature of Solar Collector Sensor S3 is lower than the Collector minimum temper-
ature parameter value (Installer parameter, default value equal to 10°C) then the ECOTRONIC tech regulator will de-
activate the Solar Circulating Pump.
To signal this mode, the Sun symbol will start flashing.
The function ends when the temperature of Solar Collector Sensor S3 becomes higher than the Collector minimum tem-
perature parameter value (Installer parameter, default value equal to 10°C) + 2°C.
Solar Collector Antifreeze function
This function depends on the Antifreeze protection function parameter value (Installer parameter, default value equal to 0=Off).
During normal operation, if the temperature of Solar Collector Sensor S3 is lower than the Antifreeze temperature (Installer
parameter , default value equal to 4°C), the Solar Circulating Pump will be activated as long as the temperature of Solar Col-
lector Sensor S3 is higher than the Antifreeze temperature (Installer parameter , default value equal to 4°C) + 1°C.
Solar Circulating Pump Anti-shutdown function
After 24 hours of inactivity, the Solar Circulating Pump is activated for 3 seconds .
EN
41
cod. -- - 11/2010 (Rev. 00)
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