Steca TR 0704 Installation And Operating Manual
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Steca TR 0704 Installation And Operating Manual

System regulator for solar thermal systems 7 inputs, 4 outputs
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SOLARTHERMIE - SOLAR THERMAL - SOLAR TÉRMICO- SOLAIRE THERMIQUE - SOLARE TERMICO
Installation and Operating Manual
System Regulator for Solar Thermal Systems
7 inputs, 4 outputs
These operating instructions are part of the product.
Read these operating instructions carefully before use.
Keep them over the entire lifetime of the product
and pass them on to any future owner or user of this product.
EN
709.756 | Z02 | 08.08 |
Änderungen aufgrund technischer Verbesserungen vorbehalten!

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  • Page 1 SOLARTHERMIE - SOLAR THERMAL - SOLAR TÉRMICO- SOLAIRE THERMIQUE - SOLARE TERMICO Installation and Operating Manual System Regulator for Solar Thermal Systems 7 inputs, 4 outputs These operating instructions are part of the product. Read these operating instructions carefully before use. ...

  • Page 2: Table Of Contents

    Content SECURITY INSTRUCTIONS AND RESTRICTION OF LIABILITY..... 4 Sign for security instructions.................4 General safety instructions................4 Regarding these instructions.................4 Restriction of liability ..................4 INSTALLATION AND OPERATION ..............5 Location of installation .................5 Installation ....................5 Regulator Connection ...................6 OPERATING THE SYSTEM REGULATOR............8 Basic Menu....................8 Measuring Values Menu ................8 Operating Status Menu.................9...
  • Page 3 SYSTEM EXAMPLES..................65 Circulation Function ...................65 Stop after-heating in the Morning..............66 Supplementary Heating ................67 Solid Fuel Boilers..................68 Recharging Storage Tanks ................69 Swimming Pool Heating ................70 Bypass in the Solar Circuit ................71 CONFIGURATION .....................72 SYSTEM EXPANSION ..................72 IS-Bus......................73 RS 232 ......................73 Add-on and Alarm Outputs ................75 INFORMATION FOR TROUBLESHOOTING ..........76 LEGAL GUARANTEE..................79 TECHNICAL DATA ..................80...

  • Page 4: Security Instructions And Restriction Of Liability

    1 Security instructions and restriction of liability Sign for security instructions Security instructions for personal safety are marked with this sign and are printed in bold letters. Instructions that refer to the functioning safety of the system are also printed in bold letters. General safety instructions For your own safety please note the following for installation: Please see that fire safety cable systems and similar things are not impaired!

  • Page 5: Installation And Operation

    2 Installation and operation The following must be observed when performing electrical work on the regulator: Depending on the version, the regulator is designed for use with 115V or 230V (±15 %) alternating voltage with a frequency of 50 or 60Hz (see rating plate). Operation with different ratings is not permitted.

  • Page 6: Regulator Connection

    Regulator Connection First of all leave open the wire entrances for the power supply connection and the connecting wires of the sensors and the pump in the casing box. For this purpose there are material draws to be cut out (fig.2, Pos.
  • Page 7 R4 output (230V switch output or voltage-free output): fig.5: R4 switch R4 voltage free Connection variants for R4 output output 230V: output: To simplify things, the R4 output has always been displayed as a 230V switch output in chapter 4. However, the output - as shown here - can also be wired as a potential- free output as required.

  • Page 8: Operating The System Regulator

    3 Operating the System Regulator The regulator allows the solar thermal system operator to create a system matching his/her own user profile. This is ensured by various setting options for parameters and service functions. The performance of the system is easily monitored due to the numerous measured data and above all the graphic visualization of the data.

  • Page 9: Operating Status Menu

    Call up (OK button) a selected M eas uring values ... measuring value to open the Operating s tatus ... + Settings relevant graphic menu. The Menu individual days, months or radiation: 9 W/qm storage 1 bottom: 47°C collector 1: 21°C therm.

  • Page 10: Parameter Menu

    M eas uring values ... Operating s tatus ... + Settings Date / Tim e... Operating s tatus ... - Settings Param eter... + Clock s - Settings Param eter... Date / Tim e... + Service Param eter... Date / Tim e... + Clock s + Clock s + Service...

  • Page 11: Date/Time Menu

    Date/Time Menu The date and time can be set or changed in the 'Date/Time' menu window (see fig.10). The date is entered separately according to day, month and year. The corresponding day of the week is independently calculated by the system regulator. Press the OK button for 2 seconds to set the day’s date (day flashes).

  • Page 12: Links Menu

    Links Menu This menu window is only shown in the menu if linking selected functions is required or possible !!! Important: The 'Links' menu window is part of the 'Service' menu and is therefore additionally protected against unintentional changes. Hold the OK and Menu buttons simultaneously for 2 seconds to open this menu window ("child-proof lock").

  • Page 13: System Selection

    4 System Selection The system regulator has a database with more than 70 pre-programmed solar systems. The corresponding basic system must be selected in the regulator before commissioning the system. The connection of sensors, pumps and/or valves is also dependent on the present system. All basic systems, their electrical terminal connection table and a brief menu overview are displayed in the following chapter.
  • Page 14 After-heating control with solid fuel boiler: '-SFH ' Some of the pre-programmed solar heating systems offer an after-heating control with a solid fuel boiler as an add-on. This function requires a temperature sensor in the upper part of the storage tank, a temperature sensor on the solid fuel boiler and a heating circuit pump.

  • Page 15: Systems With Internal Heat Exchanger

    Systems with Internal Heat Exchanger 4.1.1 Internal heat exchanger, 1 storage tank, 1 collector array If, in the 'System selection' or S7 (Radiation sensor for Basic-R) menu, the points "intern. heat exchanger", "1 storage tank" and Basic- "1 collector" are selected, the hydraulic diagram illustrated here is available for use as a basic system...
  • Page 16 Connecting diagram: Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: °C Operating status storage bottom: °C solar-pump Δ: +Settings solar-pump Σ: Parameter storage max. 60°C Date / Time collector max. 130°C +Clocks Diff. temp. solar ON +Service Diff.
  • Page 17 4.1.2 Internal heat exchanger, 1 storage tank, 2 collector arrays 4.1.2.1 Internal heat exchanger, 1 storage tank, 2 collector arrays, valve control If, in the 'System alternative radiation sensor for BasicV-R selection' menu, the points "intern. heat exchanger", "1 storage tank", "2 collectors"...
  • Page 18 • "Basic V - R" diagram: In some cases the solar circuit pump needs to be controlled according to the solar radiation. For this purpose the radiation sensors S6 and S7 must be installed in the corresponding collector levels. For control reasons, T1 must be inserted between the collector’s collection point and bypass.
  • Page 19 4.1.2.2 Internal heat exchanger, 1 storage tank, 2 collector arrays, pump control If, in the 'System selection' alternative radiation sensor for BasicP-R menu, the points "intern. heat exchanger", "1 storage tank", "2 collectors" and "Basic P" are selected, the hydraulic diagram Basic collector collector...
  • Page 20 To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another. Connecting diagram: Menu navigation: (here for the scheme 'Basic P' ) Measuring values collector 1: °C Operating status collector 2:...
  • Page 21 4.1.3 Internal heat exchanger, 2 storage tanks, 1 collector array 4.1.3.1 Internal heat exchanger, 2 storage tanks, 1 collector array, valve control If, in the 'System selection' or S6 (radiation sensor) for BasicV-R menu, the points "intern. heat exchanger", "2 storage tank", Basic "1 collector"...
  • Page 22 To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another. Connecting diagram: Menu navigation: (here for the scheme 'Basic V' ) Measuring values collector: °C Operating status storage 1 bottom:...
  • Page 23 4.1.3.2 Internal heat exchanger, 2 storage tanks, 1 collector array, pump control If, in the 'System selection' menu, the points "intern. heat exchanger", "2 storage tank", Basic "1 collector" and "Basic P" are selected, the hydraulic diagram illustrated here is available for use as a oil, basic system with the...
  • Page 24 Connecting diagram: Menu navigation: (here for the scheme 'Basic P' ) Measuring values collector: °C Operating status storage 1 bottom: °C +Settings storage 2 bottom: °C solar-pump1 Δ: solar-pump1 Σ: Parameter storage 1 max. 60°C solar-pump2 Δ: Date / Time storage 2 max.
  • Page 25 4.1.4 Internal heat exchanger, 2 storage tanks, 2 collector arrays 4.1.4.1 Internal heat exchanger, 2 storage tanks, 2 collector arrays, valve control If, in the 'System selection' menu, the points "intern. heat exchanger", "2 storage tank", Basic "2 collectors" and "Basic V"...
  • Page 26 • Add-on " - AH": R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed functional description of this add-on can be found on page 15. To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.
  • Page 27 4.1.4.2 Internal heat exchanger, 2 storage tanks, 2 collector arrays, pump control If, in the 'System selection' menu, the points "intern. heat exchanger", "2 storage tank", Basic "2 collectors" and "Basic P" are selected, the collector collector hydraulic diagram field 1 field 2 illustrated here is available for use as a basic system...
  • Page 28 • Add-on " - AH": R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed functional description of this add-on can be found on page 15. To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.
  • Page 29 4.1.5 Internal heat exchanger, 3 storage tanks, 1 collector array 4.1.5.1 Internal heat exchanger, 3 storage tanks, 1 collector array, valve control If, in the 'System or S6 (radiation sensor) for BasicV-R selection' menu, the points Basic "intern. heat exchanger", "3 storage tank", "1 collector"...
  • Page 30 To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another. Connecting diagram: Menu navigation: (here for the scheme 'Basic V' ) Measuring values collector: °C Operating status storage 1 bottom:...
  • Page 31 4.1.5.2 Internal heat exchanger, 3 storage tanks, 1 collector array, pump control If, in the 'System selection' menu, the points Basic "intern. heat exchanger", "3 storage tank", "1 collector" and "Basic P" are selected, the hydraulic diagram oil, illustrated here is available for use as a basic system with the Basic...
  • Page 32 Connecting diagram: Menu navigation: (here for the scheme 'Basic P' ) Measuring values collector: °C Operating status storage 1 bottom: °C +Settings storage 2 bottom: °C storage 3 bottom: °C solar-pump1 Δ: Parameter storage 1 max. 60°C solar-pump1 Σ: Date / Time storage 2 max.
  • Page 33 4.1.6 Internal heat exchanger, 3 storage tanks, 2 collector arrays 4.1.6.1 Internal heat exchanger, 3 storage tanks, 2 collector arrays, valve control If, in the 'System selection' menu, the points "intern. heat exchanger", "3 storage tank", "2 collectors" and collector collector "Basic V"...
  • Page 34 To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another. Connecting diagram: Menu navigation: (here for the scheme 'Basic V' ) Measuring values collector 1: °C Operating status collector 2:...
  • Page 35 4.1.6.2 Internal heat exchanger, 3 storage tanks, 2 collector arrays, pump control If, in the 'System selection' menu, the points "intern. heat exchanger", "3 storage tank", "2 collectors" and collector collector "Basic P" are selected, field 1 field 2 the hydraulic diagram illustrated here is available for use as a basic system with the...
  • Page 36 To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another. Connecting diagram: Menu navigation: (here for the scheme 'Basic P' ) Measuring values collector 1: °C Operating status collector 2:...
  • Page 37 4.1.7 Internal heat exchanger, 4 storage tanks, 1 collector array 4.1.7.1 Internal heat exchanger, 4 storage tanks, 1 collector array, valve control If, in the 'System selection' menu, the points "intern. heat exchanger", "4 storage tank", "1 collector" and "Basic V" are selected, the hydraulic diagram illustrated here is available for use as a basic system...
  • Page 38 Connecting diagram: Menu navigation: (here for the scheme 'Basic V' ) Measuring values collector: °C Operating status storage 1 bottom: °C +Settings storage 2 bottom: °C storage 3 bottom: °C Parameter storage 1 max. 60°C storage 4 bottom: °C solar-pump1 Δ: Date / Time storage 2 max.
  • Page 39 4.1.7.2 Internal heat exchanger, 4 storage tanks, 1 collector array, pump control If, in the 'System selection' menu, the points "intern. heat exchanger", "4 storage tank", "1 collector" and "Basic P" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.
  • Page 40 Connecting diagram: Menu navigation: (here for the scheme 'Basic P' ) Measuring values collector: °C Operating status storage 1 bottom: °C +Settings storage 2 bottom: °C storage 3 bottom: °C Parameter storage 1 max. 60°C storage 4 bottom: °C solar-pump1 Δ: Date / Time storage 2 max.

  • Page 41: Systems With Plate Heat Exchanger

    Systems with Plate Heat Exchanger 4.2.1 Plate heat exchanger, 1 storage tank If, in the 'System or S6 (radiation sensor) for Basic-R selection’' menu, the points "Plate heat exchanger", "1 storage tank" and "Basic" are selected, the hydraulic diagram Basic-AH illustrated here is oil, available for use as a...
  • Page 42 To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one other. Since with this diagram, speed controls are only useful when the objective is "absolute temperature", this control objective has been saved both in the settings "Absolute temp."...
  • Page 43 4.2.2 Plate heat exchanger, 2 storage tanks If, in the 'System or S7 (radiation sensor) for Basic-R selection’' menu, the points "Plate heat exchanger", "2 storage tanks" and Basic-AH "Basic" are selected, the hydraulic diagram oil, if so with Basic externar illustrated here is after-heating...
  • Page 44 To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one other. Since with this diagram, speed controls are only useful when the objective is "absolute temperature", this control objective has been saved both in the settings "Absolute temp."...
  • Page 45 4.2.3 Plate heat exchanger, 3 storage tanks If, in the 'System or S7 (radiation sensor) for Basic-R selection’' menu, the points "Plate heat exchanger", "3 storage tanks" and "Basic" are selected, the hydraulic diagram if so with illustrated here is external after-heating available for use as a...
  • Page 46 Since with this diagram, speed controls are only useful when the objective is "absolute temperature", this control objective has been saved both in the settings "Absolute temp." and also "Differential temp.". The control devices are therefore dependent on this setting. Connecting diagram: Menu navigation: (here for the scheme 'Basic' ) Measuring values...
  • Page 47 4.2.4 Plate heat exchanger, buffer tank with fresh water function If, in the 'System selection' Basic-AH menu, the points "Plate oil, heat exchanger", "Buffer tank with ...", "Fresh water funct." and "Basic" are selected, the if so with Basic external hydraulic diagram after-heating illustrated here is...
  • Page 48 • Erweiterung " - CZ": R4 and T5 enable a charging zone control to be created for charging in 2 thermal layers. A detailed functional description of this add-on can be found on page 15. • "Basic - R" diagram: In some cases the solar circuit pump must be controlled according to the solar radiation.
  • Page 49 4.2.5 Plate heat exchanger, buffer tank with preheat storage tank If, in the 'System selection’' menu, the points "Plate heat exchanger", "Buffer tank with ...", "Pre-heating storage" and "Basic" are selected, the hydraulic diagram illustrated here is available for use as a basic system.
  • Page 50 Connecting diagram: Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: °C Operating status storage 1 bottom: °C +Settings charging temp. 1 °C storage 1 top: °C Parameter storage 1 max. 70°C charging temp. 2 °C Date / Time collector max.

  • Page 51: Systems For Supplementary Heating

    Systems for Supplementary Heating 4.3.1 Supplementary Heating with reverse raising, 1 combi storage tank, internal heat exchanger or S6 (radiation sensor) for Basic-R If, in the 'System selection’' menu, the points "Supplementary Heating", "1 combi tank" and "int. heat exchanger" are selected, the hydraulic diagram illustrated here is Basic-AH...
  • Page 52 Connecting diagram: Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: °C Operating status storage bottom: °C +Settings storage middle: °C heating return flow: °C solar-pump Δ: Parameter storage max. 60°C solar-pump Σ: Date / Time collector max. 130°C reversing valve Δ: +Clocks...
  • Page 53 4.3.2 Supplementary Heating, 1 combi-storage tank, plate heat exchanger or S7 (radiation sensor) for Basic-R If, in the 'System selection’' menu, the points "Supplementary Heating", "1 combi tank" and "Plate heat exchanger" are selected, the hydraulic Basic-AH diagram illustrated here is available for use as a basic system (basic) with the indicated variants.
  • Page 54 Since with this diagram, speed controls are only useful when the objective is "absolute temperature", this control objective has been saved both in the settings "Absolute temp." and also "Differential temp.". The control devices are therefore dependent on this setting. Connecting diagram: Menu navigation: (here for the scheme 'Basic' ) Measuring values...
  • Page 55 4.3.3 Supplementary Heating, 2 storage tanks If, in the 'System selection’' menu, the points "Supplementary Heating" and "2 storage tanks" are selected, the hydraulic diagram illustrated here is available for use as a basic system (basic) with Basic-AH the indicated variants. storage tank 1 storage...
  • Page 56 Connecting diagram: Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: °C Operating status storage 1 bottom: °C +Settings storage 2 bottom: °C storage 2 top: °C Parameter storage 1 max. 60°C heating return flow: °C storage-pump1 Δ: Date / Time storage 2 max.

  • Page 57: Functions

    Functions Functions enable the pre-programmed solar systems (see chapter 4) to be individually adapted to your system. Thus the system regulator can implement special solutions and "develop" with the system’s add-ons. Pre-programmed solar systems and functions can access and evaluate the same sensors. Functions can even access the outputs already “occupied”...

  • Page 58: Differential Thermostats

    Differential Thermostats In addition to simple thermostats, the system regulator also provides 4 differential thermostats. This function is for implementing the hysteresis control for differential temperatures. To activate a differential thermostat, select the desired differential thermostat and press the OK button for 2 seconds ( -->...

  • Page 59: Time Functions

    Time Functions The system regulator provides 3 independent time functions to implement the time-controlled functions (time clocks). To activate a time function, select the required time function in the menu 'Settings -> 'Service' -> 'Functions' -> 'Time functions' and press the OK button for 2 seconds ( -->...

  • Page 60: Additional Measuring Values

    After activating a heat meter several required settings must be performed. Depending on the flow meter used, its scale must be entered in impulses per liter or liters per pulse. For calculating density and heat capacity, an entry for the mixing ratio of anti-freeze and water is required. In this function, the regulator’s micro controller factors in the material data of the often-used Tyfocor L solar fluid (propylene glycol).

  • Page 61: Dvgw Heating

    Evaporation of the heat transfer medium must be expected by temperatures greater than 130 °C in the collector circuit. For this reason, the control system ensures safe deactivation of the solar circuit pump. Returning to normal operation – that is, without implementing the described regulating function of the collector temperature limitation –...

  • Page 62: Synchronous Output

    5.10 Synchronous Output This function helps allocate a second output to any chosen output, which should switch synchronously. This link is often called a parallel output. Both the outputs of the regulator itself and the outputs of the four possible add-on units (for additional IO boxes see chapter 9.1) can be used. The synchronous output is activated in the menu 'Settings ->...

  • Page 63: Fresh Water At R2

    5.12 Fresh Water at R2 With this function a fresh water function/fresh water station (heating of domestic hot water with the flow heater principle) is possible. This option for generating domestic hot water has the advantage that larger quantities of hot water must not be stored for use (legionella problem, heat losses, ...). The fresh water function is activated in the menu 'Settings ->...

  • Page 64: Links

    Links This menu window is shown in the menu only when a link of selected functions is required or possible !!! With the help of the 'Links' menu different functions, which access the same output can be logically linked together. With these links the conditions for operation of an output can be programmed individually.

  • Page 65: System Examples

    System Examples This chapter shows, with the help of several examples, how system adjustments/expansions can be implemented with the help of the functions explained in chapter 5. Due to the large number of possible systems, only a few examples can be dealt with here. However, many other adjustments can be made using the same layout plan.

  • Page 66: Stop After-Heating In The Morning

    With storage tank temperature control: An additional check of the differential temperature between circulation circuit (Tx) and the upper storage tank temperature (Ty) can ensure that the circulation function is activated only when the temperature of the water in the storage tank is sufficiently higher than that of the water in the circulation circuit.

  • Page 67: Supplementary Heating

    Example: thermostat for minimum comfort temperature: switch-on temp. 50°C ; switch-off temp. 60°C temp. input: E3 (regulator) ; output: R4 (regulator) Time function Times Mo to Fr: from 11:00 A.M. to 11:59 P.M. Times Sa and Su: from 11:00 A.M. to 11:59 P.M. output: R4 (regulator) Note: When setting the individual time windows ensure that the switch-on time is always before the corresponding switch-off time.

  • Page 68: Solid Fuel Boilers

    Solid Fuel Boilers In some layout plans (chapter 4) an after- function for solid fuel boilers (-SFH) is already integrated. If the layout plan you selected does not provide this function it can be programmed with the help of three thermostat functions (chapter 5.1).

  • Page 69: Recharging Storage Tanks

    Recharging Storage Tanks In the case of layout plans with several storage tanks it is very easy to implement storage tank recharging with the help of a differential Speicher thermostat. To enable this recharging function you need only one of the four differential thermostat functions (Chapter 5.2), two available inputs and one available output (called Tx, Ty and Rx in the adjacent diagram).

  • Page 70: Swimming Pool Heating

    Swimming Pool Heating From the point of view of the solar heating system, a swimming pool is nothing more than a storage tank (normally with lowest priority). preprogrammed layout plans can therefore be accessed. Tx and Rx are the temperature sensor and pump of the "other storage tank"...

  • Page 71: Bypass In The Solar Circuit

    Bypass in the Solar Circuit In some cases, integrating a temperature-guided bypass in the solar circuit is a good idea. This bypass is to prevent cooled-down water, which remains in the lines after downtimes, from being pumped through the warm storage tank and therefore cooling this at the start. Protecting a plate heat exchanger against ice cold water is also easy in this manner.

  • Page 72: Configuration

    Configuration The regulator is factory set so that it can be used for most applications without changing the parameters. If parameters are changed by mistake, they can be reset to the factory presetting using the function "factory settings" (in the menu 'Settings' -> 'Service' -> 'Manual operation' -> 'factory settings').

  • Page 73: Is-Bus

    IS-Bus Add-on module If additional inputs and outputs are needed with more comprehensive systems, the system regulator can be expanded with up to four add-on modules. Each of these modules has its own microprocessor and adds another 4 inputs and 3 outputs to the system regulator.
  • Page 74 The measured data in the individual records are based on the following units: temperatures operation hours solar radiation power flow rate daily values °C minutes W/m² Liter monthly values hours kWh/m² Liter annual values kWh/m² m³ Necessary settings for direct connection to a PC/laptop: The required new connection must be added under “Start”...

  • Page 75: Add-On And Alarm Outputs

    Add-on and Alarm Outputs For applications where, as well as the 4 standard outputs of the regulator (R1 to R4) and the 3 outputs of each of the 4 add-on modules, a further 1-2 outputs are required, there are 2 open- collector outputs available for actuating external relays.

  • Page 76: Information For Troubleshooting

    Information for Troubleshooting Warning! Before opening the housing the unit must be disconnected from the mains! The regulator was designed to be continually used for several years. Nevertheless, faults may occur. Most of the time, the fault’s cause is not sought in the regulator, rather in the peripheral system elements.
  • Page 77 Radiation measured data shows 0 W/m² even though sensor is sufficiently irradiated. Secondary condition: Possible cause: Sensor defective or sensor line disconnected or short-circuited (radiation sensor can not be checked independently by the regulator for disconnection or short circuit) Sensor line connected with improper polarity. With the radiation sensors the correct polarity must be ensured (see Chapter 2.3) Flow rate sensor or heat meter determines no or incorrect amount of heat.
  • Page 78 Error indication in the regulator’s LCD display: The error messages at issue can be read in the ´Operating status´ submenu. Short circuits and disconnections of the individual temperature sensors are then displayed only when the corresponding sensors are actually really used on account of the selected layout plan and the activated functions.

  • Page 79: Legal Guarantee

    Legal Guarantee In accordance with German statutory regulations, there is a 2-year legal guarantee on this product for the customer. The seller will remove all manufacturing and material faults that occur in the product during the legal guarantee period and affect the correct functioning of the product. Natural wear and tear does not constitute a malfunction.

  • Page 80: Technical Data

    Technical Data Operating voltage 230 volts ( ± 15 % ), 50 Hz ≤ 3.0 W Self consumption 7 inputs Of which 2 x temperature (Pt1000) or radiation input and 5 x temperature (Pt1000) or pulse input for calorimetry 4 outputs R1 as switch output Triac for speed control, switching capacity max.
  • Page 84 709756...

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