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4. CONTROLLER HANDLING.

4.1. TEMPERATURE SETTING.

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4.2. PARAMETERS PROGRAMMING.

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11. ADVANCED SYSTEMS.

11.1. Solar collector and boiler circulating pump control system.

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Functions performed by the controller in the system:
–collector pump control 
–central heating boiler circulating pump control system 
Tips for parameters programming: 
F10=1 (boiler T1 and collector T2 temp. measurement)
F11=temperature difference T2-T1 between the solar 
collector and the boiler after reaching that, the collector's 
pump switches on, for example 8 °C 
F12=pump switching hysteresis, for example 2 C
F15=OFF
F16=In cloudy days, when solar energy is low, it is essential 
to heat-up the boiler from the other source. This parameter 
specifies the boiler temperature below which an external 
heating source switches on, for example boiler circulating 
pump. Setting, for example 40 °C. 
F17=90min (external heating source switching delay)
F21=0; F29=COOL ; F50=0 ; F51=0 ; F52=0

°

F12=2

°C

F12=2

°C

6°C

8°C

Main 

output

Time

Time

Temp.

0

1

10°C

Auxiliary 

output

When T1<F16

1

T2-T1

Time

0

F11

Push the button  
for 2 seconds. 

Confirm the set with  
      Key.  

Diode      lights up.

Using 

  or       button

set the desired 
temperature value.  

                          

set

set

Diode      lights off.

Remarks: 
–to cancel the setting, press the       button in any time
–the setting change can be limited by F13 and F14 parameters

Information: 
To improve quick increasing or decreasing the settings values hold the       or       button 
constantly for at least 1 sec. 

Enter the menu holding 
      Key for 5 sec., Until:

Command 

displays.

Using       key confirm 
the new parameter 
value and return to the 
parameters list. 

Using 

   or       key 

choose the parameter 
you want to change and 
enter with

      Key.

set

set

set

set

set

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If the access is protected 
            Command 
displays.

Using 

  ,        and

Buttons enter the 
password and confirm 
with       key. 

Using 

    or

 button 

set the desired 
parameter value. 

Finish programming 
pressing       button or
enter the ‘’End’’ command
and press       key or wait
30 sec. without pressing
 any button 

Remarks:
- press      button to cancel the parameter setting 

Information:
Hold 

or       button for at least 1 sec. to improve quick increasing and decreasing of setting 

values.  

SC-20 

T1 - boiler temperature sensor
T2 - fireplace temperature sensor  
Collector pump and c.h. pump max. 400W 230V~

Power supply

230V~

20(8)A

8(2)A

T2

Pk

Pco

13 14 15 16

12

11

°C

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set

°C

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set

°C

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set

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set

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set

°C

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set

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set

°C

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set

M

set

Pc

Pb

T2

T1

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set

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