9
If you don't want to change the current language version, return to the main menu by pressing . In order to return to the main screen, press
.
4. Description of control parameters
ΔT1 – Basic control coefficient. This parameter determines the condition for switching the collector pump on and off. If the sum of parameter ∆T1 and the
temperature in tank T2 exceeds the value of temperature in the tank located on T1 collector, the collector pump will switch off. When this sum is lower from
the value of T1, collector pump will switch on. Additionally, in order to guarantee a stable work of the heating system, hysteresis control has been
implemented, with a value of 2°C.
ΔT2 – Auxiliary control coefficient. This parameter is used to control more complex systems, therefore its description is given in paragraph 6, only for
selected collector installation configurations.
T2max – Parameter linked with sensor T2 located in the tank. Parameter determines the maximum acceptable temperature measured by sensor T2, if
exceeded, the collector pump switches off.
T4max - Similarly to the auxiliary control coefficient described above, this parameter is used in more complex installation types. Its description is given in
paragraph 6 for selected installation types only.
Reg. P Regulation of the main collector pump. If an option of regulating the collector pump is selected in the parameters, the controller will regulate the
collector pump's speed. If the option of regulating the collector pump's speed is switched off, the controller will control the pump on an on/off basis.
Cool. An option allowing for cooling the collectors. When this option is switched on, the controller will automatically switch the collector pump on, in order
for the temperature of water in the tank to fall below 35°C. This option is time-related and works between midnight and 6 A.M.
P. circ. Pump circulation option. This option regards installation types no. 2 and 10 only. When the parameter is set to "continuous", the circulation pump
will be switched on during hours set in the "Time programme" menu. If the option is set to "non-continuous", the circulation pump will operate in hours set in
the "Time programme" menu, however, it will operate in cycles, switching on and off for 10 minute intervals.
Power Parameter used in installation systems described in paragraph 6.1 The controller calculates the collector power and switched off the boiler or the
heater, if the calculated power exceeds the power value set as the controlling parameter. When the collector power is below the set value, the control of the
boiler/heater output takes place as described in paragraph 6.1.
5. Calculating momentary collector power
The controller has an additional function of calculating momentary collector power. Collector's momentary power can be calculated for all installation
configurations, except systems no. 8 and 9. In order to make calculation of momentary power possible, installation of sensor T3 is necessary, as well as a
correct programming of the „Heating medium” and „Flow / rotameter” parameters, located in the "Parameters" menu.
Heating medium: This parameter defines the solidification temperature of the heating medium. In order to determine this parameter, contact your
installation provider. In order to set this parameter, enter the main menu by pressing , then using button or select the
"Control parameters" option and press . In the control parameters menu, using the button or select the option "Heating
medium" and confirm your selection by pressing . Using button or select the correct value for the solidification
temperature of the fluid and store this value into the controller's memory by pressing . In order to leave the option of setting the parameter
without making and changes, press . In order to return to the main screen, press few times, returning to the main screen through
the main menu.
Flow / rotameter: In order to correctly determine this parameter, connect a rotameter into the installation. In this option, the O1 output is switched off so that
collector pump works with maximum efficiency. The value for the flow through the rotameter needs to be set in the "Flow / rotameter" option and stored into
the controller's memory. The procedure of setting the "Flow / rotameter" parameter is done exactly the same way as with the "Heating medium" parameter
described above. In the "Control parameters" menu, select the "Flow / rotameter" option, instead of the "Heating medium" option.
When sensor T3 is not connected, or the collector pump is not working, The LCD screen will display horizontal lines in place where the power value would
be displayed. Momentary power is calculated and displayed only when the collector pump is working.
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