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BDC 102 

 

Microprocessor-controlled control unit for solar thermal systems

 

 

 
 
 

 

 

 

 

 

IMPORTANT 
Before installing and using this device, you must read through the 
instructions carefully.  
Failure to observe the instructions and safety information contained in 
these installation and operating instructions will void the guarantee for 
the device described/installed. 

STORE THESE INSTRUCTIONS IN A SAFE PLACE. 

 

31.01.2007 

1328BED001-10B-E 

Installation and Operating Instructions 

 

Summary of Contents for BDC 102

Page 1: ...ust read through the instructions carefully Failure to observe the instructions and safety information contained in these installation and operating instructions will void the guarantee for the device described installed STORE THESE INSTRUCTIONS IN A SAFE PLACE 31 01 2007 1328BED001 10B E Installation and Operating Instructions ...

Page 2: ...ENTS 7 5 DEVICE INSTALLATION 7 6 ELECTRICAL CONNECTION 8 6 1 230V connection 8 6 2 Connection of temperature sensor 8 6 3 Replacing the fuse 8 7 COMMISSIONING 9 8 OPERATION INDICATORS 10 8 1 Adjustment of control values 10 8 2 Indicators 10 9 REGULATOR FUNCTIONS 11 10 RECTIFICATION OF FAULTS 11 10 1 Indicated faults display 11 10 2 Faults that are not indicated 12 11 TECHNICAL DATA 13 12 RESISTANC...

Page 3: ...tions This could result in damage and hazardous voltages to the device itself and to the attached sensors and devices Solar thermal systems can become very hot There is a risk of being burnt Take care when installing the temperature sensor Install the BDC 102 in such a way that no excessive operating temperatures 50 C result e g as a result of heat sources BDC 102 is not protected against splashin...

Page 4: ...01 10B E Status 01 07 4 2 SYMBOLS AND ABBREVIATIONS Warning This symbol indicates potential dangers Warning 230 Volts This symbol indicates risk to life through high voltages List i Information on operation special features Instructions procedure Test check ...

Page 5: ...nd safety regulations stipulated for the area of use are met Use of the device in ways other than that intended by the manufacturer requires the approval of the manufacturer failing which the guarantee shall not apply 3 2 Device features BDC 102 is characterised by the following features Compact design Minimal installation work 2 LED power on indicators Monitoring of operation Adjustable temperatu...

Page 6: ...n to storage cylinder sensor T2 5 Adjustment of maximum storage cylinder temperature TSPmax 6 Green light for Mains device is connected to power supply Green light for Pump 7 Red light for Fault 8 Fuse 5 DEVICE INSTALLATION The BDC 102 may be installed only in dry rooms where there is no risk of explosion Installation on a flammable base is not permitted The casing of the BDC 102 is designed for s...

Page 7: ...mperature sensors can be extended For lengths up to 15 m a cross section of 2 x 0 5 mm is required for lengths up to 50 m a cross section of 2 x 0 75 mm is necessary For lengths exceeding 10 meters a shielded cable is recommended Sensor cables must not be laid parallel to 230 Volt power cables as these can cause faults To protect the collector sensor within the control unit the use of a lightning ...

Page 8: ... pump Reconnect the pump to the control unit Are the sensor cables for the collector and storage cylinder sensors correctly connected to the relevant control unit terminals Yes No Connect sensors correctly With the mains supply switched off connect the control unit and then switch on the mains supply e g via a safety fuse Does the green Mains light lights up Yes No Test the fuse on the device Chec...

Page 9: ...er storage cylinders values of between 60 C and 90 C are usual A temperature of 80 C is preset at the factory 8 2 Indicators The operating status and potential faults are indicated by two lights For easier identification a pump symbol is shown next to the green LED and a warning symbol next to the red LED LED Display colour Meaning Green LED Mains Continuous green light Control unit is switched on...

Page 10: ...ith the pump switched on the difference in temperature between the collector and the storage cylinder exceeds the amount of 60 C 7K for 30 minutes If this occurs a fault continuous red light is displayed Pump block protection If the solar thermal system is not in use due for example to continuous bad weather the solar circuit pump can seize To prevent this from happening the control unit switches ...

Page 11: ...tive Pump has seized Installation protection De aerate the system Check the pump connection Replace the pump Ensure the pump is running Collector temperature 120 C wait until the temperature has fallen below 105 C 10 2 Faults that are not indicated Faults and errors that are not displayed can be tested using the following table and possible causes and sources of error identified If based on the de...

Page 12: ... for cos ϕ 0 7 1 0 Operating temperature 0 50 C Storage temperature 10 65 C Regulator functions Temperature difference regulator Maximum storage cylinder temperature Adjustable from approx 20 C to 95 C Temperature difference Temp difference at which pump switches on 7K Temp difference at which pump switches off 3K Pump block protection function Every 10 days Sensor monitoring Interruption and shor...

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