CONTENTS Contents Contents Safety instructions and explanation of symbols General safety instructions Symbols Details of the product EU Declaration of Conformity Package contents Product description Specifications Regulations Installation (for engineers only) Mounting the programmer on a wall Installing motorised 3-way diverter valve DWU (option) 4.2.1 Description of function 4.2.2 Specifications 4.2.3 Installation for return boost function...
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CONTENTS 5.4.14 Configuration diagram 1-CD p-v - solar water heating with 2 cylinders connected via valve and external heat exchanger 5.4.15 Configuration diagram 1-CD p-v - solar water heating with swimming pool connected via valve and external heat exchanger 5.4.16 Configuration diagram 1-ACD p-v - solar water heating with 2nd collector array, 2 cylinders connected via valve and external heat exchanger 5.4.17 Configuration diagram 1-ACD p-v - solar water heating with 2nd collector array, swimming pool (connected via valve) and external heat exchanger...
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CONTENTS 9.5.9 Return boost cut-in temperature differential 9.5.10 Return boost cut-out temperature differential 9.5.11 Return boost mode 9.5.12 Pump PA speed control 9.5.13 Pump PA modulation 9.5.14 Pump PA operating mode 9.5.15 Pump PB cut-in temperature differential 9.5.16 Pump PB cut-out temperature differential 9.5.17 Pump PB operating mode 9.5.18 Heat consumer charging 9.5.19 Pump PC speed control...
SAFETY INSTRUCTIONS AND EXPLANATION OF SYMBOLS Safety instructions and explanation of symbols General safety instructions About this manual This manual contains important information about the safe and correct installation and operation of the solar heating programmer. This manual is intended for heating engineers. B Read this manual carefully and keep it for future reference.
SAFETY INSTRUCTIONS AND EXPLANATION OF SYMBOLS Symbols Safety instructions in this document are identified by a warning-triangle symbol and are printed on a grey background. Signal words indicate the seriousness of the hazard in terms of the consequences of not following the safety instructions.
DETAILS OF THE PRODUCT Details of the product EU Declaration of Conformity The design and operation of this product conform to the applicable European directives and supplementary national requirements. Conformity has been demonstrated. Package contents 7747006071.06-1.SD 7747006071.06-1.SD Fig. 1 Programmer and temperature sensors TDS 300 programmer •...
DETAILS OF THE PRODUCT Product description The programmer is designed for use with a solar heating system. It can be mounted on a wall or is integrated in a solar pump station. In normal operating mode, the display screen on the programmer stays illuminated in green/yellow for 5 minutes after the last button was pressed (activated by pressing the rotary selector , for example).
DETAILS OF THE PRODUCT Specifications TDS 300 programmer Power consumption 1.8 W Enclosure rating IP20 / DIN 40050 Supply voltage 230 V AC, 50 Hz Operating current : 5 A Maximum power consumption 5 A (max. 1.1 A per output/1 device per output) Sensing range - 30 to + 180 °C Permissible ambient temperature...
REGULATIONS Regulations This device complies with the applicable EN requirements. Observe the following regulations and guidelines: B Local regulations and requirements of the electricity supplier concerned. B Commercial/industrial codes and regulations and fire regulations. 6 720 644 593 (2010/04)
INSTALLATION (FOR ENGINEERS ONLY) Installation (for engineers only) Mounting the programmer on a wall The programmer is attached to the wall by three screws. CAUTION: Risk of injury and damage to the casing if incorrectly mounted. B Do not use the rear panel of the casing as a drilling template. B Drill top fixing hole ( Fig.
INSTALLATION (FOR ENGINEERS ONLY) Installing motorised 3-way diverter valve DWU (option) The motorised diverter valve DWU can be used for a number of purposes. CAUTION: risk of damage to valve and system! B Observe the connection markings on the valve. The valve positioner must not face downwards.
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INSTALLATION (FOR ENGINEERS ONLY) Valve energised (open). The 3-way motorised valve opens within approx. 3 minutes, allowing through passage from I to II. • The position indicator is fully visible ( Fig. 5). • 6720613626.04-1.SD Fig. 5 Position indicator when valve is energised. As soon as the power to the motorised 3-way valve is switched off, it connects through to III again.
INSTALLATION (FOR ENGINEERS ONLY) 4.2.2 Specifications Specifications Max. closing pressure 0.50 bar (55 kPa) Max. static pressure 8.6 bar (860 kPa) Union size Max. flow temperature 100 °C Kvs rating Voltage 230 V, 50 Hz Max. ambient temperature -5 to +50 °C Tab.
INSTALLATION (FOR ENGINEERS ONLY) 4.2.3 Installation for return boost function The “return boost” function for heating system boosting in a solar heating system, requires a valve that directs the flow either through the reserve cylinder or directly back to the boiler depending on the return temperature.
INSTALLATION (FOR ENGINEERS ONLY) 4.2.4 Installation for cylinder selection function The “cylinder selection” function in a solar heating system requires a valve that directs the flow to the cylinders according to the switching conditions and cylinder priority ( Section 9.5.18, page 68). DWUC 6720613732-10.1 SD Fig.
INSTALLATION (FOR ENGINEERS ONLY) Fitting a heat meter (option) The heat meter measures the heat in the solar system (solar yield). 6720613732-08.1 SD Fig. 10 Heat meter package contents Water meter unions, ¾", inc. seals (2 off) Temperature sensor NTC 10K inc. fixings (2 off) Volumetric flow meter (1 off) Number of collectors Rated volumetric flow rate...
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INSTALLATION (FOR ENGINEERS ONLY) 6720613732-07.1 SD Fig. 11 Fitting the volumetric flow meter and temperature sensors Volumetric flow meter Return temperature sensor Flow temperature sensor The heat meter is used only to check system function. It is not capable of metering to EN 1434 or determining yield.
ELECTRICAL CONNECTIONS (FOR ENGINEERS ONLY) Electrical connections (for engineers only) DANGER: risk of fatal electric shock. B Disconnect the power supply (230 V AC) before opening up the solar heating programmer. B Secure the cable with the cable grip. Preparing the cable entry Depending on the fitting situation, the cables can be fed into the casing from behind ( Fig.
ELECTRICAL CONNECTIONS (FOR ENGINEERS ONLY) Connecting the leads Observe the following points when connecting the leads: Comply with local regulations, such as protective earthing tests etc.. • Only use pumps, valves and sensors supplied by the manufacturer. • Protect the programmer from overloads and short-circuits. •...
ELECTRICAL CONNECTIONS (FOR ENGINEERS ONLY) Designation of configuration diagrams Each configuration diagram has an alphanumeric designation code that enables basic identification of the type of system. 1 = Standard system 2 = Heating boost system A = 2nd collector array B = Staged charge system C = High/low priority D = External heat exchanger...
OPERATION Operation B Hand all documents to the user. B Explain to the user how the device works and how to operate it. Programmer controls 7747006072-23.1 SD Fig. 40 programmer and display Display Rotary selector Back button Menu button Symbol for temperature sensor Displays of temperatures, hours of operation, etc.
OPERATION Programmer operation levels 6.2.1 View level At View level you can use the rotary selector to view the following system data. Display Supplementary function System data None Temperature (°C) • Hours of operation, cumulative (h) • Hours of operation, current 24-hour period •...
OPERATION Status display Cylinder maximum temperature The cylinder maximum temperature is displayed if the set limit is exceeded. max. max. Collector minimum temperature min. min. The collector minimum temperature is displayed if the temperature drops below the set limit. Collector maximum temperature max.
COMMISSIONING (FOR ENGINEERS ONLY) Commissioning (for engineers only) Before commissioning WARNING: risk of damage to pump if allowed to run dry. B Make sure that the solar heating system is filled with heat transfer fluid installation and maintenance instructions for solar heating centre). B Follow the instructions in the technical documentation for the solar heating centre, the collectors and the solar cylinder when commissioning the solar heating system.
COMMISSIONING (FOR ENGINEERS ONLY) Entering basic settings When the programmer is first installed, you are requested to enter the language and time. B Enter the language and time before continuing with commissioning. Basic settings B To select the language turn the rotary selector Language B To save the setting, press the rotary selector Language...
MAIN MENU Main menu The Main menu can be used to set the maximum temperatures for the heat consumers (solar cylinder, cylinder C, swimming pool). Once the cylinder or swimming pool reaches the maximum temperature, charging of that heat consumer is stopped. If no entry is made for more than 60 seconds, the programmer exits the main menu.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) Expert menu (for qualified technicians only) The Expert menu is used to set the programmer to suit the specifics of the solar heating system. B To switch to the Expert menu, press and hold the menu button for 5 seconds.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) Language selection Menu: Expert menu > Language B To switch to the Expert menu, press and hold the button for 5 seconds. menu Advanced menu Language Time System config. Settings Start solar system B Turn the rotary selector to select Language and press the rotary selector to confirm.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) Time, setting Menu: Expert menu > Time B To switch to the Expert menu, press and hold the button for 5 seconds. menu B Turn the rotary selector to select Time and press the rotary selector to confirm.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) System configuration Menu: Expert menu > System config. The System configuration option allows you to select the basic system and the configuration diagram. There are two basic system options: 1: Standard systems • 2: Heating boost systems •...
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.4.2 Changing the configuration diagram B Turn the rotary selector to select System option and press the rotary selector confirm (configuration diagram no. starts flashing). System config. System option B To select the desired configuration diagram, turn the rotary selector B To save the setting, press the rotary selector B To return to the next menu up, press the button.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.4.3 Additional function options dependent on configuration diagram The functions listed below are dependent on the configuration diagram selected and have to be selected from Settings ( Section 9.5, page 62). Functions not listed are not dependent on configuration diagram or else a standard feature of the selected configuration.
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EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) Function Heat exchanger Thermal anti-icing Configuration diagram Page Cooling function disinfection system 1-ACD p-v (swimming pool) X (S1, S2, S5) X (S6) X (S1, S2) X (S1, S2, S5) 2-C p-p X (S1, S2, S5) X (S2, S4) 2-C p-v X (S1, S2, S5)
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) Settings The system-related programmer settings are dependent on the solar heating system configuration chosen. B Check all setting options ( Section 9.1, page 55) for relevance to the selected configuration diagram. WARNING: risk of scalding if cylinder temperature limiter deactivated! If pumps or valve settings are manually altered, all safety functions are disabled.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.2 Pump SP cut-out temperature differential Menu: Expert menu > Settings > 1: Standard system > SP pump switch-off temp. differential If the temperature differential between the bottom of the solar cylinder and the collector array drops below the set cut-out temperature differential (ΔT) , the solar system pump switches off.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.5 Pump SP speed control Menu: Expert menu > Settings > 1: Standard system > SP pump speed control WARNING: risk of damage to system due to pump failure. B If a pump with internal electronic circuitry is connected, deactivate the speed control function on the programmer.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.7 Collector type Menu: Expert menu > Settings > 1: Standard system > Collector type In order to pump the heated heat transfer fluid to the temperature sensor in systems with evacuated tube collectors, the solar system pump is switched on briefly every 15 minutes between the hours of 6:00 am and 10:00 pm if the collector temperature is 20 °C or more.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.10 Return boost cut-out temperature differential Menu: Expert menu > Settings > 2: Back-up htg. > DWU1 valve switch-off temp. differential When the set cut-out temperature differential between the reserve cylinder and the heating system return is reached, the valve switches over and the flow is not directed through the cylinder but diverted to the boiler.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.13 Pump PA modulation Menu: Expert menu > Settings > A: 2nd collector array > PA pump modulation This setting determines the minimum speed of the pump for the 2nd collector array. Setting range Default setting New setting 30 - 100 %...
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.17 Pump PB operating mode Menu: Expert menu > Settings > B: Recharge system > PB pump operating mode In Auto mode, the connected pump runs whenever the conditions for switching on are met. Selecting the option On switches the pump on.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.19 Pump PC speed control Menu: Expert menu > Settings > C: Prio./sec.prio > PC pump speed control WARNING: risk of damage to system due to pump failure. B If a pump with internal electronic circuitry is connected, deactivate the speed control function on the programmer.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.22 Valve DWU3 operating mode Menu: Expert menu > Settings > C: Prio./sec.prio > DWU3 valve operating mode In Auto mode, the valve allows fluid to flow from I to II when the conditions for doing so are met. If the option On is selected, the valve allows fluid to flow from I to II.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.25 External heat exchanger anti-icing system Menu: Expert menu > Settings > D: Ext. heat exchanger > Anti-icing The anti-icing function is intended for solar heating systems which have long pipe lengths in areas exposed to frost and transfer solar heat via an external heat exchanger.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.27 Pump PD operating mode Menu: Expert menu > Settings > D: Ext. heat exchanger > PD pump operating mode In Auto mode, the connected pump runs whenever the conditions for switching on are met. Selecting the option On switches the pump on.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) The length of the piping runs for thermal disinfection must be kept as short as possible (preheat • cylinder located in close proximity of standby cylinder). The temperature of the standby cylinder must not drop below the 60-degree limit. •...
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.32 Pump PE operating mode Menu: Expert menu > Settings > E: Therm. disinfection > PE pump operating mode In Auto mode, the connected pump runs whenever the conditions for switching on are met. Selecting the option On switches the pump on.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.36 Cooling function Menu: Expert menu > Settings > Cooling function The cooling function minimises the solar heating system stagnation periods. The solar heating system is run at a high temperature to maximise piping heat loss. If the cylinder temperature is 9 K below the cylinder maximum temperature (in systems with two heat consumers always that of the low-priority cylinder) the solar pump is switched off.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) 9.5.37 Mediterranean climate function Menu: Expert menu > Settings > S. Europe function The Mediterranean climate function is intended solely for use in regions where the high temperatures generally mean that there is no risk of frost damage. If the collector temperature falls below 5 °C when the Mediterranean climate function is active, the solar pump is switched on.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) Start solar system Menu: Expert menu > Start solar system When the solar programmer is first installed, the system status Solar system OFF is active in order to prevent unintentional starting of the pumps. For normal operation, the solar system must be switched on.
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY) Reset Menu: Expert menu > Reset This function allows you to reset the solar programmer to the default settings. Resetting to the default settings removes all individual settings so that they then have to be re-entered.
FAULT FINDING 10 Fault Finding 10.1 Faults indicated on the display When indicating a fault, the display is back-lit in red. In addition, the type of fault is indicated by symbols. The individual fault messages can be retrieved using the rotary selector. Fault messages continue to be displayed until the fault is rectified.
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FAULT FINDING Indication/Type of fault Effect Possible causes Remedy “Therm. disinfection running time error” The thermal disinfection has Target temperature not Check the pump. Check the not been carried out. reached. cylinder temperature. Check supplementary heating. Check time setting on programmer and supplementary heating.
FAULT FINDING 10.2 Faults not indicated on the display Type of fault Effect Possible causes Remedy Pump not running even though conditions for switching on are met. The solar cylinder is not No power supply; fuse or Check fuse and replace if being supplied by the power cable faulty.
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FAULT FINDING Type of fault Effect Possible causes Remedy Cylinder temperature limit and hot water mixer are set too high. Pump is being activated/ Temperature sensor incorrectly Check position, installation and deactivated too early / too fitted. type of sensor; add heat late.