Heater Operation Below Min. Operation Temp; Additional Heat Source; Additional Heat Source Parameters; Solar Collector Parameters - Tech Controllers ST-53.4 User Manual

HEATER OPERATION BELOW MIN. OPERATION TEMP.

Using this function, you can select whether the heater will operate below minimum working temperature and electrically heating
up water in the tank or is to be disabled.

ADDITIONAL HEAT SOURCE

This function enables the user to enable/disable the additional heat source. Once it has been enabled, a new option appears in
the service menu - Additional heat source parameters. This option may be used to adjust the heat source operation to individual
user's needs.
•
None - if this option has been selected, the controller will not support the additional heat source.
•
Solar collector - if this option has been selected, the controller will support a heating system with a solar collector.
Additional parameters will appear in the service menu, enabling the user to configure the solar collector. The main
screen will display a solar collector icon.
•
CH boiler - if this option has been selected, the controller will support a heating system with an additional heat source -
CH boiler. Additional parameters will appear in the service menu, enabling the user to configure the additional heat
source. The main screen will display an icon of the additional heat source.

ADDITIONAL HEAT SOURCE PARAMETERS

6.7.1

SOLAR COLLECTOR PARAMETERS

•
PUMP SWITCHING DELTA
The parameter determines the difference between the collector's and the tank's temperature at which the circulation pump starts
to work (it is the threshold pump activation value).
•
PUMP DEACTIVATION DELTA
The parameter determines the difference between the collector's and the tank's temperature at which the circulation pump is
deactivated (in order to not cool the tank down).
•
OVERHEATING DELTA
This parameter is concerned with alarm pump switching in the situation of excessive temperature increase in the collector in the
standby mode. When the temperature reaches the collector overheating temperature value less the overheating delta, the pump
will be turned on.
•
COLLECTOR OVERHEATING TEMPERATURE
This is the collector's alarm temperature. If the collector's temperature reaches the
value, it will start forced pump activation in order to cool the solar panels down. Hot water discharge will be made regardless of
the preset tank temperature. The pump will work until:
- the collector's temperature drops below the alarm value by the hysteresis value 5°C
- the tank reaches the maximum acceptable temperature
- the collector reaches the maximum acceptable temperature
•
TANK OVERHEATING TEMPERATURE
In the case of an excessive temperature increase in the solar panels, the controller will turn the additional pump on in order to
cool the collector down. This pump will operate until the tank achieves the threshold value specified in this parameter.
•
COOLING THE TANK DOWN TO THE PRESET TEMPERATURE
Cooling the tank down to the preset temperature consists of activating the additional pump when the tank's temperature exceeds
the preset temperature and the solar panels have been cooled down (e.g.: at night). After activating this function, the controller
will turn on the additional pump in order to cool the tank down to the set temperature level.
•
COLLECTOR'S MAXIMUM TEMPERATURE
By means of this setting, the user declares the collector's maximum alarm temperature at which the pump can be damaged. This
temperature should be set according to the particular collector's technical data. Due to the phenomenon of glycol "gelling" at high
COLLECTOR OVERHEATING TEMPERATURE
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