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4
System Selection
The system regulator has a database with more than 70 pre-programmed solar systems.
The corresponding basic system must be selected in the regulator before commissioning the system.
The connection of sensors, pumps and/or valves is also dependent on the present system. All basic
systems, their electrical terminal connection table and a brief menu overview are displayed in the
following chapter. The pre-programmed systems can be roughly differentiated as follows:
4.1 Systems with internal heat exchanger:
4.1.1 Systems with 1 storage tank and 1 collector array
4.1.2 Systems with 1 storage tank and 2 collector arrays
4.1.3 Systems with 2 storage tanks and 1 collector array
4.1.4 Systems with 2 storage tanks and 2 collector arrays
4.1.5 Systems with 3 storage tanks and 1 collector array
4.1.6 Systems with 3 storage tanks and 2 collector arrays
4.1.7 Systems with 4 storage tanks and 1 collector array
4.2 Systems with plate heat exchanger:
4.2.1 Systems with 1 storage tank
4.2.2 Systems with 2 storage tanks
4.2.3 Systems with 3 storage tanks
4.2.4 Systems with buffer tank and fresh water function
4.2.5 Systems with buffer tank and preheating storage tank
4.3 Systems for heating support:
4.3.1 Systems with
1 combi storage tank and internal heat exchanger
4.3.2 Systems with 1 combi storage tank and plate heat exchanger
4.3.3 Systems with
2 storage tanks
Before a new layout plan can be selected, the current layout plan must first be deactivated
(press OK 2 sec.)! As long as no layout plan has been selected, the 'System selection...' menu
cannot be exited with the 'Menu' button!
The hydraulic plans displayed in the following chapter only depict a schematic diagram. They are only
meant as an aid to understanding and are in no respect a substitute for professional system planning.
The system regulator provides these system groups in a basic version ('Basic') and with different add-
ons ('-Ci' , '-AH' , '-SFH' , '-CZ' , '-R').
These add-ons are explained in more detail in the following:
Circulation control: '-Ci '
Some of the pre-programmed solar heating systems offer a circulation control as an add-on for the hot
water circuit. This function requires a temperature sensor on the return line of the circulation line and a
circulation pump. In the event the hot water circuit falls below the set value (parameter: 'circulation
ON') the corresponding circulation pump is activated and runs until the adjustable switch-off value
(parameter: 'circulation OFF') is reached.
Important: When installing the sensor there should be a minimum distance of 1.5m to the storage
tank, to prevent erroneous measurements due to the thermal conduction of the pipe.
After-heating Control: '-AH '
Some of the pre-programmed solar heating systems offer an after-heating control as an add-on for
one of the storage tanks. This function requires a temperature sensor in the upper part of the storage
tank and a heating circuit pump or a boiler control with potential-free controlling (e.g. condensing gas
boiler). In the event the temperature falls below the set value (parameter: 'after-heating ON') the
corresponding heating circuit pump or boiler control is activated and runs until the adjustable switch-off
value (parameter: ‘after-heating OFF') is reached.
Attention: Please observe that a heating circuit pump at the R4 output can be controlled either
directly with 230V (e.g. an older boiler) (factory-installed terminal jumper must be fitted) or indirectly
via a separate boiler control (e.g. gas condensing boiler) and the potential-free R4 switch output
(factory-installed terminal jumper must be removed as otherwise the boiler control system can be
destroyed).
For graphical reasons the after-heating is always shown with a heating pump in the following hydraulic
diagrams. Naturally, separate boiler controls can also be used.
