Universal temperature differential regulator for solar- and heating systems Mounting instructions. Technical data. Page 1/25

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1 Page /5 universal regulator for application in solar- and heating systems function control plastic housing with easy mounting and compact dimensions text display with menu control by rotary knob relay outputs for pump speed bus connection for remote data displays, data logger and computer Technical data DeltaS eltasol ol Pro Housing: plug-in plastic housing Size: 50 x 0 x 5 mm Protection type: IP30 / DI Display: 4-digit plain text display Breakover points: adjustable by the menu Control range: C Ambient temperature: C Adjustments: system choice and menudriven Inputs: 3 sensor inputs Pt000 This innovative electronic solar regulator RESOL D is the central element in the efficient operation of solar thermal and heating systems. DeltaS The regulator RESOL DeltaS eltasol ol Pro is programmed with different basic systems for universal application in solar- and heating systems; individual programmes may be selected by the user as necessary. Additional programmes may optionally be added to enable optimum control of the system. In designing this regulator great importance has been attached to enclosing the essential components. The central element is the rotary knob with integrated pushbutton. In combination with a 4-place display, the user is allowed to access system menus and change control parameters within set limits. This simple concept gives the user the confidence to use the regulator without affecting any of the essential operational functions. This version of the regulator is additionally equipped with the RESOL V-BUS for connection of additional modules such as remote data display, data logger, PC-adapter as well as a calorimeter and a RS3-interface for direct data output to a PC. The regulator DeltaSol PRO is also available as an individual OEM-version, so that additional adaptations to the system are possible. (to be continued next page) o responsibility can be accepted for any errors or technical changes. RESOL 96 DeltaSolpro_montage.p65 deltapro_montage.p65

2 for solar- and heating systemes Page /5 (continued from page ) Outputs: relay outputs for pump speed, total power supply x 4 A Power supply: 30 V AC, ± 0 % Power consumption: max. 4 VA Data output: RESOL V-BUS Examples DeltaS eltasol ol Pro The above-shown icons should only be used for illustration; they only represent a choice of the possible applications. Order indication Article-no. RESOL DeltaS eltasol ol Pro RESOL DeltaS eltasol ol Pro - complete package - incl. 3 temperature sensors Pt000 ( x FKP6, x FRP6) Patch cord / software Connecting cable with special plug and 9-contact connection plug for the serial PC-interface as well as evaluation software DeltaSol PC Accessory: Overvoltage protection It is highly recommended to connect this RESOL overvoltage protection SP to all collector sensors in order to avoid overvoltages (e.g. by lightening). Order indication RESOL SP Article-no.:

3 Page 3/5 Safety regulations: Please read the following information carefully before installing and operating the regulator. In this way damage to the regulator or the solar system will be avoided. All electrical wiring must comply with the latest IEE regualtions.. Mounting Warning: Switch of power supply before opening the housing!. Mounting at the wall 3 4 Please unlock both snap connections () at the top and at the bottom of the housing by means of a pointed item. The housing () can now be removed from the base (3). The required openings and cable feed-throughs (4) must be broken through and deburred. The positions for the 4 fastening screws (5) must be marked and the base may be attached by means of the enclosed screws and dowels. The electrical connection can be effected now. The unit must only be located internally. It is not suitable for installation in hazardous locations and should not be sited near to any electromagnetic fields. 5. Electrical connection The power supply to the regulator must only be made by an external power supply switch (last step of mounting!) and the line voltage must be 30 Volt ± 0 % ( Hz). Pumps, valves,... can be connected to the consumeroutputs R and R of the terminals at the base: = conductor R 4 = conductor R, 3 = neutral conductor ground clamp = protective earth conductor The power supply is effected at the terminals: 5 = neutral conductor 6 = conductor L ground clamp = protective earth clamp The temperature sensors (S up to S3) will be connected to the following terminals independently of the polarity : / = temperature sensor S 3 / 4 = temperature sensor S 5 / 6 = additional sensor S3, as for measurement purposes or for additional functions (e.g. further stores)

4 for solar- and heating systemes Page 4/5 The regulator RESOL D is equipped with a RESOL V-BUS-connection for data transmission and energy supply (terminals 7 and 8, marking of connection BUS at the base-/ isolation plate). One or more RESOL V-Bus modules can be connected by this data bus: RESOL WMZ-M, calorimeter-module. RESOL DFA, temperature- and malfunction display for comfortable control of the most important measuring data at remote places. RESOL V-BUS (terminals 7 and 8) RESOL PC-adapter for transmission of the measuring data to a connected PC. Evaluation and visualisation occurs by the software DeltaSol PC. Further modules are in preparation. special plug jack, RS3 (in the upper part of the housingl) At the lower front of the regulator is a special plug jack for the second data output. A PC can be directly connected by RS3-interface to this data output. By means of the free evaluation tools DeltaSol PC, the values measured by the regulator can be read-out, processed and visualizased. The software enables a comfortable balance and function control of the system, but also an editing of the data records for a further processing in other application programmes. The evaluation tool DeltaSol PC can be downlaoded free of charge from the RESOL homepage in the Internet ( or can be directly ordered at RESOL-Elektronische Regelungen GmbH together with a patch cord (see page ). ou will find the location of the special plug jack imprinted on the base/isolation plate at the posititon marked with RS3. chinch plug interface adapter Sub-D connection cable PC, COM-port twisted -wire cable western plug Sub-D plug

5 Page 5/5 Precision-platin-temperature sensors Pt000 (FKP and FRP) are used for the RESOL DELTA Pro. The arrangement of the sensors is of great importance to the total efficiency of the regulator. The collector temperature should be measured in the upper part of the collector. In stores with own heat exchanger, the sensor must be directly mounted in the upper part of the heat exchanger. By using external heat exchangers, the sensor must be fixed at the bottom of the store. For individual operation systems, our product range contains 3 different types of sensors (sensors for installation in present immersion sleeves, flatscrew sensors or cylindrical clip-on sensors). The sensor types FK and FR have the same electrical features and are available in the same models, They only differ in the connecting cable: FK:,5 m weather- and temperature resistant silicone cable for temperatures between -50 C C, mostly used for collectors. FR:,5 m PVC cable for tempertures between -5 C C, mostly used for stores. Make sure that all electrical works are carried out according to the relevant local and IEE-regulations. The sensor cables carry low voltages and they must not run together in a cable conduit with cables carrying higher voltages than 50 Volt. By using longer cables or cable conduits, please use screened cables. The seensor cables can be lengthened up to 00 m, but the cross section must be,5 mm² (or 0,75 mm² up to a cable length of 50m); screened cables should be used preferably. The sensors must not get directly in contact with water, please use always immersion sleeves. Standard temperature sensors: for installation in present immersion sleeves (they are included in complete packages) FKP6 or FRP6: 6 mm, Pt000 Immersion sensors: available in different length (=immersion depth) FKP60: 60mm immersion depth, chromium-plated copper FKP50: 50mm immersion depth, chromium-plated copper Important: The sensors must be completely pushed into the sleeve and the nut must be slightly tightened. Cylindrical clip-on sensors: for any pipe diameter, cpl. with fastening collar FKP0 or FRP0 Ensure good thermal contact of the sensor with the pipework by cleaning the contact area and by applying heat conduction paste between sensor and pipe. In order to protect the sensor cable against outside temperature influences, it is recommended to insulate the pipe. Flatscrew sensors: for installation on flat surfaces FKP8 or FRP8 Ensure good thermal contact. Use conduction paste and insulate the sensors against outside temperature influences. FK... : collector sensor FR... : store sensor Indication: In order to avoid overvoltage damage at the collector (e.g. by lightening), it is highly recommendend to use the overvoltage protection RESOL SP.

6 for solar- and heating systemes Page 6/5 3. Operation: 3. Mode switch: The mode switch is positioned at the lower front side of the housing and enables the following adjustments: 0 relay switched-off Auto automatic operation for relay outputs I relays (R and R) switched-on, permanent operation 3.3 Control lamps: 3. Rotary knob with integrated pushbutton and the menu system Rotary knob with integrated pushbutton 3 light emitting diodes with the following symbols are located at the front side of the regulator: control lamp for relays red: relays (R and R) OFF green: relay (R or R) O control lamp for malfunctions flashing: error message control lamp for manual operation green: mode switch in position I (R and R O) red: relays (R and R) OFF The regulator RESOL D can only be operated by the rotary knob with integrated pushbutton. The main menu is shown on the display in the output condition. 5 menus can be selected in the MAI menu:. MEASURED VALUES. ADJUSTMETS 3. OPTIOS 4. BALACE VALUES 5. ERROR MESSAGE The plain text-display shows a 4-line section of the choosen menu. The flashing cursor shows the actual position within this menu. A small arrow symbol on the upper right side of the display indicates the possible scroll directions of the cursor. By turning the rotary knob, the cursor runs through the menu. By pushing the integrated pushbutton a menu item can be choosen. By turning the rotary knob again, the standard value can be changed. By pushing once more the pushbutton, the modification is finished. A maladjustment is avoided by a security inquiry check, which can be answered with ()es or ()o.

7 Page 7/5 4. Basic systems and menu 4. Basic systems The regulator RESOL D is programmed for 4 basic systems: System : collector and store System : collector and stores System 3: collectors and store System 4: swimming-pool system The basic systems can be adjusted to each system by activating or deactivating additional options in the menu. Please find a more detailed description of all possible systems in point 6 of this instruction. 4. Menu Indication: The selective adjusted values and options are system dependent and can only be found in the display if the they are available for the choosen basic system. By chosing BACK at the end of each menu, you will get back to the main menu. ou will find a menu structogram on page Main menu The following submenus are available in the main menu: Meas. values: Indication of actual sensor temperatures, relays status and time Adj. values: System selection and adjustment of control parameter or regulation default Options: Activation or deactivation of system dependent additional options Bal. values: Time- and temperature balances for regulation and system Error report: Failure report 4.. Measured values The measurement values menu offers the possibility to display the actual sensor temperatures for S up to S3, the relative on-period for relays and and for indication or adjustment of time: Sensor : present temperature at sensor in C Sensor : present temperature at sensor in C Sensor 3: present temperature at sensor 3 in C Relay : present relative on period for relay in % Relay : present relative on period for relay in % Time: Indication and adjustment of the actual time

8 for solar- and heating systemes Page 8/ Adjusted values A selection of the basic systems and the adjustment of the control parameter or the regulation default is to be made within the adjustment value menu: System: Selection of the basic systems min. rot. speed: Minimum rot. speed for relays output and min. runtime: Switch-off delay for relay Ton: Switch-on temperature difference for relay Toff: Switch-off temperature difference for relay Ton: Switch-on temperature difference for relay Toff: Switch-off temperature difference for relay Tmax store : Maximum temperature for store Tmax store : Maximum temperature for store Priority: Priority logic in systems with stores Pruntime: Pbreak: Therm on: Therm off: Therm on: Therm off: min TQ: Half wave: Minimum runtime of the solar pump for charge of the less important store Waiting time for control of the rise in temperature at the collector in case of priority logic Switch-on temperature for thermostat function Switch-off temperature for thermostat function Switch-on time for thermostat function Switch-off time for thermostat function Minimum temperature for the heat source Control value (please don t shift) 4..4 Options All available additional options can be activated or deactivated by replying ()es/()o in the option menu: Frost protection: As soon as the temperature falls under +4 C, warmer water from the store wil be pumped into the collector in order to avoid frost damages. If the temperature of +5 C is achieved at the solar panel, the pump switches off again. Indication: This function is only appropriate for countries with few days of temperatures at freezing point. Sp-protection:The store can indeed be charged up by the collector cooling function above the adjusted maximum temperature, but not exceeding 90 C. Tube col.: Recooling: Switch-on logic for improvement of the turn-on characteristics of systems with unfavourable placed collector sensors - prevents a belated switching-on of the system. The collector circuit is switched on every 30 min. for a period of 30 sec. If the maximum store temperature is exceeded, the solar pump is switched on for cooling purposes in order to avoid an overheating of the collector. The temperature of the store can rise, but only up to 90 C (security switch-off of the store). Collector cool.:if the collector temperature rises above the adjusted maximum collector temperature (0 C), the pump remains activated until this temperature limit value is again underrun. Bypass: The bypass valve is switched on if the temperature difference between bypass sensor and store sensor is higher than Ton. It is again switched off if this difference is lower than Toff. Thermos. R: Use of relay output for the thermostat function (cooling- or heating function). T R: Valve: Tmin: Additional temperature difference regulation for relay output Deactivation of the pump speed regulation for relay output Minimum temperature of the heat source

9 Page 9/ Balance values 4..6 Error report Operation: Pump : Pump : min S: max S: min S: max S: Operating days of the regulator.. Operating hours of the consumer connected to relay. Operating hours of the consumer connected to relay. Lowest temperature measured at temperature sensor S. Highest temperature measured at temperature sensor S. Lowest temperature measured at temperature sensor S. Highest temperature measured at temperature sensor S. Short circuit: Line break: EEPROM: RTC Error: Code deletion: Interruption of the sensor lead with indication of the concerned temperature sensor. Interruption of the sensor lead with indication of the concerned temperature sensor. Error in memory chip. Modifications will not be saved in case of a power failure. Error in real-time clock. Time control of the thermostat function is not guaranteed. Reset status of error messages. min S3: Lowest temperature measured at temperature sensor S3. max S3: Highest temperature measured at temperature sensor S3. 5. Commissioning. Mounting of the housing The upper part of the housing must be plugged on the socket. The ac power supply is effected by an external switch. Warning: The snap connections of the housing must clearly lock.. Switching: The mode switch of the regulator must be set to 0 before the power connection can be switched on. After an initialisation phase of 5 seconds, the control lamps illuminate and red for indication of the mode switch position. 3. Adjustments: Please adjust now the respective basic system, the required options and the necessary regulation defaults. Before finishing, please check all adjustments. 4. Test starting of the system and automatic operation If the switch is set to I, the control lamps illuminate and green in order to indicate the mode switch position and the consumer connected to terminals to 4 are supplied with power. After having finished this test, the mode switch is to be switched to Auto for the automatic operation.

10 for solar- and heating systemes Page 0/5 5. Menu

11 Page /5 6. Examples 6. System, solar system with collector and store: 4 5 The regulator () determines the temperature difference between collector sensor S () and store sensor S (3). As soon as this difference is higher or identical to the adjusted temperature difference ( Ton), the pump (4) is activated so that the store is loaded until the switch-off temperature difference ( Toff) or the maximum store temperature are reached. The 3. temperature sensor S3 (5) can additionally be used for measuring purposes (e.g. for measuring the temperature in the upper part of the store). 3 menu point factory setting selected adjustments adjusted values / system adjusted values / min rot. speed 30 % adjusted values / Ton adjusted values / Toff adjusted values / Tmax st 60 C options / frost protection options / store-protection options / tube col. options / recooling options / collector cooling options / bypass options / thermostat R options / T R options / Tmin

12 for solar- and heating systemes Page /5 6. System, solar system with collector, store and after-heating: The regulator () determines the temperature difference between collector sensor S () and store sensor S (3). As soon as the difference is higher or identical to the adjusted switch-on temperature difference ( Ton), the pump (4) is activated so that the store is loaded until the switch-off temperature difference ( Toff) or the maximum store temperature are reached. The 3. temperature sensor S3 (6) is used for measurement of the temperature in the upper part of the store. A recharge of the hot domestic water is possible by the option thermostat function. menu point factory setting selected adjustments adjusted values / system options / thermostat R adjusted values / min rot. speed 30 % adjusted values / Ton adjusted values / Toff adjusted values / Tmax store 60 C adjusted values / therm on 0.0 C 40 C adjusted values / therm off 0.0 C 45 C adjusted values / therm on(time) 0:00 adjusted values / therm off(time) 0:00 options / frost protection options / store-protection options / tube col. options / recooling options / collector cooling options / bypass options / T R options / Tmin

13 Page 3/5 6.3 System, reverse raising of a heating circuit by solid fuel boiler or boiler inserted in stove: 4 3 The regulator () determines the temperature difference between the measuring sensor of the solid fuel boiler or boiler inserted in stove S () and the temperature sensor S (3) of the return flow. If this measured temperature difference is higher or identical to the adjusted value Ton, the return flow temperature is increased by using the heat of the solid fuel boiler in case of activating a 3-way-valve (4) (heating support). It is simultaneously controlled, if a given minimum temperature is reached or exceeded in order to avoid flue gas condensation. menu point factory setting selected adjustments adjusted values / system options / Tmin adjusted values / min rot. speed adjusted values / Ton adjusted values / Toff adjusted values / Tmax store(return flow) 30 % 60 C adjusted values / min TQ 0.0 C 60 C (recommended) options / frost protection options / store-protection options / tube col. options / recooling options / collector cooling options / bypass options / thermostat options / T R

14 for solar- and heating systemes Page 4/5 6.4 System, store loading by solid fuel boiler: The regulator () determines the temperature T at the sensor S () of the solid fuel boiler- or boiler inserted in stove with the temperature T at the sensor S (3) of the store. If the measured temperature difference is higher or identical to the adjusted value Ton, the pump (4) is activated if the adjusted minimum temperature is at the same time reached or exceeded (avoidance of flue gas condensation).the store is only loaded up until the adjusted maximum temperature. The 3. temperature sensor S3 (5) can be used for measuring purposes (e. g. for measurement of the temperature in the upper part of the store). menu point factory setting selected adjustment adjusted values / system options / Tmin adjusted values / min rot.speed 30 % adjusted values / Ton adjusted values / Toff adjusted values / Tmax st 60 C adjusted values / min TQ 0.0 C 60 C (recommended) options / frost protection options / store protection options / tube collectors options / recooling options / collector cooling options / bypass options / thermostat options / T R

15 Page 5/5 6.5 System, solar system with collector cooling function for use of surplus energy: The regulator () determines the temperature difference between the collector sensor S () and the store sensor S (3). As soon as the difference is higher or identical to the adjusted switch-on temperature difference ( Ton), the pump (4) is activated so that the store is loaded until the swich-off temperature difference ( Toff) is reached. If the maximum temperature of the store is reached (Tmax Sp), the pump of the solar circuit (4) is switched off and the pump of the cooling circuit (5) is activated so that the surplus energy is carried off. The 3. temperature sensor S3 (6) can be additionally used for measuring purposes (e.g. for measurment of the temperature in the upper part of the store). menu point factory setting selected adjustment adjusted values / system adjusted values / min rot.speed 30 % adjusted values / Ton adjusted values / Toff adjusted values / Tmax st 60 C options / frost protection options / store protection options / tube collectors options / recooling options / collector cooling options / bypass options / thermostat options / T R options / Tmin

16 for solar- and heating systemes Page 6/5 6.6 System, solar system with recooling function for use of surplus energy: The regulator () determines the temperature difference between the collector sensor S () and the store sensor S (3). As soon as the difference is higher or identical to the adjusted switch-on temperature difference ( Ton), the pump (4) is activated and the store is loaded until the switch-off temperature difference ( Toff) is reached. If the maximum store temperature (Tmax Sp) is reached, the pump of the solar circuit (4) remains activated. The pump of the cooling circuit (5) is additionally activated in order to carry off the surplus energy. The 3. temperature sensor S3 (6) can be additionally used for measuring purposes (e.g. for measuring the temperature in the upper part of the store). menu point factory setting selected adjustment adjusted values / system adjusted values / min rot. speed 30 % adjusted values / Ton adjusted values / Toff adjusted values / Tmax st 60 C options / frost protection options / store-protection options / tube coll. options / recooling options / collector cooling options / bypass options / thermostat options / T R options / Tmin

17 Page 7/5 6.7 System, solar system with thermostat function for use of surplus energy: The regulator () determines the temperature difference between collector sensor S () and store sensor S (3). As soon as the difference is higher or identical to the adjusted switch-on temperature difference ( Ton), the pump (4) is activated and the store is loaded until the temperature difference ( Toff) is reached.if the maximum store temperature (Tmax Sp) is reached, the pump of the solar circuit (4) is switched off. The 3. temperature sensor S3 (6) is used for temperature measurement in the upper part of the store and by optionally activating the thermostat function, the pump of the cooling circuit is switched on so that the surplus energy is carried off. menu point factory setting selected adjustments adjusted values / system options / thermostat R adjusted values / min rot. speed 30 % adjusted values / Ton adjusted values / Toff adjusted values / Tmax st 60 C adjusted values / therm on 0.0 C adjusted values / therm off 0.0 C adjusted values / therm on(time) 0:00 adjusted values / therm off(time) 0:00 options / frost protection options / store-protection options / tube col. options / recooling options / collector cooling options / bypass options / T R options / Tmin

18 for solar- and heating systemes Page 8/5 6.8 System, solar system with external heat exchanger: The regulator () determines the temperature difference between collector sensor S () and store sensor S (3). As soon as the difference is higher or identical to the adjusted switch-on temperature difference ( Ton), the pump (4) is activated; the primary circuit is heated up. The temperature difference between S3 (5) and S (3) is simultaneously determined in comparasison with the. adjustable switchon temperature difference ( Ton). If this temperature difference is higher than the adjusted value, the pump (6) is switched on by relay and the store is loaded. 3 menu point factory setting selected adjustment adjusted values / system options / bypass adjusted values / min rot. speed 30 % adjusted values / Ton adjusted values / Toff adjusted values / Ton adjusted values / Toff adjusted values / Tmax st 60 C options / frost protection options / store-protection options / tube col. options / recooling options / collector cooling options / thermostat R options / T R options / valve options / Tmin

19 Page 9/5 6.9 System, solar system with bypass: The regulator () determines the temperature difference between collector sensor S () and store sensor S (3). As soon as the difference is higher or identical to the adjusted switch-on temperature difference ( Ton), the pump (4) is activated and the primary circuit is heated up. The temperature difference between S3 (5) and S (3) is at the same time determined in comparison with the. adjustable switch-on temperature difference ( Ton). If this temperature difference is higher than the adjusted value, the valve (6) is switched on by relay and the store is loaded. 3 menu point factory setting selected adjustment adjusted value / system options / bypass options / valve adjusted value / min rot. speed 30 % adjusted value / Ton adjusted value / Toff adjusted value / Ton adjusted value / Toff adjusted value / Tmax store 60 C options / frost protection options / store-protection options / tube collectors options / recooling options / collector cooling options / thermostat R options / T R options / Tmin

20 for solar- and heating systemes Page 0/5 6.0 System, solar system with stores (pump control): 5 6 The regulator () compares the temperature at the temperature sensor S () with the temperatures at S (3) and S3 (4). If the measured temperature differences are higher than the adjusted switch-on temperature differences Ton or Ton, the respective pump (5/6) is activated and the affiliated store is only loaded up until the adjusted maximum temperature. Priority can optionally be given to one store. 3 4 If no store is prefered, both stores are independently loaded up until their maximum temperatures are reached (parallel loading). menu point factory setting selected adjustments adjusted values / system adjusted values / min rot. speed 30 % adjusted values / Ton adjusted values / Toff adjusted values / Ton adjusted values / Toff adjusted values / Tmax store 60 C adjusted values / Tmax store 60 C adjusted values / priority adjusted values / Prun 5 min adjusted values / Pbreak min options / frost protection options / store-protection options / tube collectors options / recooling options / collector cooling. options / valvel

21 Page /5 6. System, solar system with stores (valve control): 5 6 The regulator () compares the temperature at the temperature sensor S () with the temperatures at S (3) and S3 (4). If the measured temperature differences are higher than the adjusted switch-on temperature differences Ton or Ton, the pump (5) is activated and by the valve (6) and the respective store is only loaded up until the adjusted maximum temperature is reached. By using this system, priority must be given to one of the stores, because parallel loading is not possible. 3 4 menu point factory setting selected adjustments adjusted values / system options / valve adjusted values / min rot. speed 30 % adjusted values / Ton adjusted values / Toff adjusted values / Ton adjusted values / Toff adjusted values / Tmax store 60 C adjusted values / Tmax store 60 C adjusted values / priority adjusted values / Prun 5 min adjusted values / Pbreak min options / frost protection options / store-protection options / tube collectors options / recooling options / collector cooling

22 for solar- and heating systemes Page /5 6. System, solar system with store charge in layers: The regulator () compares the temperature at the temperature sensor S () with the temperatures at S (3) and S3 (4). If the measured temperature differences are higher than the adjusted switch-on temperature differences Ton or Ton, the pump (5) is activated and the respective store is loaded up by the valve (6) until the adjusted maximum store temperature is reached. The adjusted priority logic causes a priority charge of the upper part of the store. 3 menu point factory setting selected adjustments adjusted values / system options / valve adjusted values / min rot. speed 30 % adjusted values / Ton adjusted values / Toff adjusted values / Ton adjusted values / Toff adjusted values / Tmax store 60 C adjusted values / Tmax store 60 C adjusted values / priority adjusted values / Prun 5 min adjusted values / Pbreak min options / frost protection options / store-protection options / tube collectors options / recooling options / collector cooling

23 Page 3/5 6.3 System 3, solar system with east-/west collectors: The regulator () compares the temperatures at both collector sensors S () and S (3) with the store temperature at temperature sensor S3 (4). If one of the measured temperature differences is higher than the adjusted switch-on temperature differences Ton and Ton, the respective pump (5/6) is switched on and the store is loaded. 4 menu point factory setting selected adjustments adjusted values / system 3 adjusted values / min rot. speed 30 % adjusted values / Ton adjusted values / Toff adjusted values / Ton adjusted values / Toff adjusted values / Tmax store 60 C options / frost protection options / store-protection options / tube collectors options / recooling options / collector cooling options / Tmin

24 for solar- and heating systemes Page 4/5 6.5 System 3, solar system with collector, combination store and solid fuel boiler: menu point factory setting selected adjustments adjusted values / system 3 options / Tmin adjusted values / min rot. speed 30 % adjusted values / Ton adjusted values / Toff adjusted values / Ton adjusted values / Toff adjusted values / Tmax store 60 C adjusted values / min TQ (only for solid fuel boiler) 0.0 C options / frost protection 60 C (recommended) options / store-protection options / tube collectors options / recooling options / collector cooling

25 Page 5/5 7. Test aid: Pt000-sensor Please check the following items if the regulator RESOL DeltaS does not work faultlessly :. Power supply The power supply is guaranteed if at least one control lamp lights up.. Error report If there is a malfunction in the regulation circuit, the malfunction lamp lights up. By chosing the menu point ERROR REPORT you will get into the submenu, in which a more detailed error description is indicated: Short-circuit: Interruption of the sensor lead with indication of the concerned temperature sensor. The error code is indicated for this sensor in the measurement result menu. Line break: EEPROM: Interruption of the sensor lead with indication of the concerned temperature sensor. The error code is indicated for this sensor in the measurement result menu. Error in memory chip.modifications will not be saved in case of power failure. T > 5. K: Plausibility check, temperature difference is higher than 5, K; regulation function is guaranteed but the system must be checked for defect elements (pump, valves etc.). Delete the code: Reset status of error messages. 3. Relay Please check the fuses, if the solar pump is not activated by the regulator in spite of an existing line voltage and mode switch position to I. The relay output of the regulator is protected by can fuses T4 A which are accessible on the base/isolation plate after removing the housing and can be changed now (spare fuses are enclosed).