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Specification Sheet 0004/08/Rev00

 ING

FUNCTIONS 
 

The S301-S302 controllers are installed in solar heating plants to 
govern the system and supervise the thermal interchange between solar 
collector panels and power storage in an efficient way, allowing the 
installer to regulate the system.  
The  backlitgh LCD panel display the functions of the controller, its 
status and signals out possible malfunctions.   
Among other complementary functions, the model highlights the 
holiday function  which protects the system during long absences from 
home and the antifreezing function.  The S302 switchboard also allows 
the control of thermal stratifications in the boiler.  

 

 
 
 
 
 
 

 

 
 
 
 

 

 
PRODUCTS 

 

S301

 MULTILOOP TEMPERATURE CONTROLLERS FOR HEATING SYSTEMS 2 INPUTS – 1 OUTPUT 

S302

 MULTILOOP TEMPERATURE CONTROLLERS FOR HEATING SYSTEMS 3 INPUTS – 1 OUTPUT 

 

 
TECHNICAL DATA

 

 

 

   S301 

     S302 

Electrical power supply   230V 

(±15%), 

50Hz 

   230V 

(±15%), 

50Hz 

Self 

consumption 

 <1W 

     <1W 

Inputs 

 

 

N.2 - temperature gauge (Pt1000) 

 

 

N.3 - temperature gauge (Pt1000) 

Output   N.1 

output 

command, 

max. 800W [230V~] 

 

N.1 - output command, max. 800W [230V~] 

Display 

 

 

Graphic animated LCD Display dual color background 

Graphic animated LCD Display dual color background 

Power-up 

differential 

value 

4-20K 

     8K 

 

Power-down 

differential 

value 

2-18K 

     4K 

Type of protection 

 

IP 20/DIN 40050   

 

 

 

IP 20/DIN 40050 

Room Temperature allowed 

from 0 to + 45°C   

 

 

 

from 0 to + 45°C 

Weight   250 

     250g 

Dimensions 

  137x134x38 

    137x134x38 

Thermal sensors 2xPt1000 

1.5m silicone wire (working range up to 180°C)   

1.5m silicone wire (working range up to 180°C) 

(supplied with kit) 

 
REGULATING FUNCTIONS 

 

 
 

 
 

 

 
 

 

 
 

 
 

 

 
 

 

 

ART. S301-S302 TEMPERATURE CONTROLLERS   

         

 FOR SOLAR HEATING SYSTEMS 

 

 

Art.S301 

Art.S302 

Summary of Contents for S301

Page 1: ...in the boiler PRODUCTS S301 MULTILOOP TEMPERATURE CONTROLLERS FOR HEATING SYSTEMS 2 INPUTS 1 OUTPUT S302 MULTILOOP TEMPERATURE CONTROLLERS FOR HEATING SYSTEMS 3 INPUTS 1 OUTPUT TECHNICAL DATA S301 S302 Electrical power supply 230V 15 50Hz 230V 15 50Hz Self consumption 1W 1W Inputs N 2 temperature gauge Pt1000 N 3 temperature gauge Pt1000 Output N 1 output command max 800W 230V N 1 output command m...

Page 2: ...on the basis of installation instructions Wiring Layout According to the type of monitoring system the wires may pass from behind through the back wall of the box or from the lower part of the box base To pass the wires from behind remove the plastic tongue on the back of the box with a suitable tool e g a pair of scissors To pass the wires from below cut off the plastic tongues on the right and l...

Page 3: ...bol the message max in the boiler s symbol which will be flashing Maximum temperature of the collector In the event of strong solar heat radiation the temperature T1 of the heat transfer fluid may exceed 130 C The heat transfer fluids will then evaporate Should this occur the pump will stop as a protection until the temperature does not lower once again below 127 C The screen will display the foll...

Page 4: ...oller correspond with the technical data of the controller Disconnect the equipment from the electrical power before carrying out maintenance works Protect the controller against overloads and shortcircuits MAINTENANCE The controller was manufactured to last for many years and should not require maintenanceby the user Despite this breakdowns may still occur Maintenance must be performed only by qu...

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