Universal temperature differential regulator with integrated calorimeter (19 pages)
Summary of Contents for Resol DeltaSol CS Plus bidirectional
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Troubleshooting The Internet portal for easy and secure access to your system data – www.vbus.net Thank you for buying this RESOL product. Manual Please read this manual carefully to get the best performance from this unit. Please keep this manual carefully.
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• ATTENTION means that damage to the appliance can occur. labelled with the CE mark. The Declaration of Conformity is available Note upon request, please contact RESOL. Notes are indicated with an information symbol. Note Î Arrows indicate instruction steps that should be carried out.
CS Plus bidirectional Solar controller DeltaSol ® The DeltaSol CS Plus bidirectional has been especially developed for the speed The DeltaSol CS Plus bidirectional has 2 PWM feedback inputs and a status ® ® display for a bidirectional pump. control of high-efficiency pumps in standard solar and heating systems. It is equipped with two PWM outputs and an additional input for a VFD Grundfos Direct Sensor that enables a precise heat quantity measurement.
• Optional thermal disinfection function Supply connection: type Y attachment • Drainback option Standby: 0.61 W Mode of operation: type 1.C.Y action Rated impulse voltage: 2.5 kV Data interface: RESOL VBus ® Upper fastening VBus ® current supply: 35 mA...
Installation Mounting Display WARNING! Electric shock! Upon opening the housing, live parts are exposed! Î Always disconnect the device from power supply before opening the housing! Cover Button Note Strong electromagnetic fields can impair the function of the device. Î Make sure the device as well as the system are not exposed to strong electromagnetic fields.
3 4 5 6 7 8 9 10 19 = Neutral conductor N Data communication / Bus 20 = Conductor L The controller is equipped with the RESOL VBus for data transfer and energy ® 12 = Protective earth conductor ⏚...
System overview Standard solar system (page 8) Solar system with heat exchange Solar system with backup heating Solar system with store loading in (page 11) layers (page 22) (page 17) Solar system with 2 stores and valve Solar system with 2 stores and pump Solar system with east-/west collectors Solar system with backup heating by logic (page 28)
Systems Arrangement 1: Standard solar system The controller calculates the temperature difference between collector sensor S1 If the heat qunatity measurement option (OHQM) is activated, S1, S4 or VFD can be and store sensor S2. If the difference is larger than or identical to the adjusted used for measuring the temperature (see table on p.
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Display channels Channel Description Connection terminal Page INIT ODB initialisation active ODB filling time active STAB ODB stabilisation in progress Temperature collector Temperature store Temperature sensor 3 TSTT Temperature store top Temperature sensor 4 Temperature flow sensor S1 / S4 / VFD Temperature return sensor S4 / VFD Temperature Grundfos Direct Sensor™...
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Adjustment channels Channel Description Factory setting Page DTCO Switch-on temperature difference cooling 20.0 K [40.0 °Ra] DTCF Switch-off temperature difference cooling 15.0 K [30.0 °Ra] OSTC Store cooling option OHOL Holiday cooling option THOL Holiday cooling temperature 40 °C [110 °F] Collector minimum limitation option Collector minimum temperature 10 °C [50 °F]...
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Arrangement 2: Solar system with heat exchange The controller calculates the temperature difference between collector sensor S1 Heat exchange from store 1 to store 2 will be operated by relay 2, if the tempera- and store sensor S2. If the difference is larger than or identical to the adjusted ture difference between sensors S3 and S4 is larger than or identical to the adjusted switch-on temperature difference (DT O), the solar pump will be activated by relay switch-on temperature difference (DT3O), until the adjusted minimum (MN3O) and...
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Display channels Channel Description Connection terminal Page INIT ODB initialisation active ODB filling time active STAB ODB stabilisation in progress Temperature collector TST1 Temperature store 1 base TSTT Temperature store 1 top TST2 Temperature store 2 base Temperature flow sensor Temperature return sensor Temperature Grundfos Direct Sensor™...
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Adjustment channels Channel Description Factory setting Page OSTC Store cooling option OHOL Holiday cooling option THOL Holiday cooling temperature 40 °C [110 °F] Collector minimum limitation option Collector minimum temperature 10 °C [50 °F] Antifreeze option Antifreeze temperature 4.0 °C [40.0 °F] Tube collector option TCST OTC starting time...
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System-specific functions Speed control The following adjustments are used for the specific functions in system 2. ∆T control for the heat exchange between 2 stores DT3S Set temperature difference Adjustment range: 1.5 … 30.0 K [3.0 … 60.0 °Ra] DT3O Factory setting: 10.0 K [20.0 °Ra] Switch-on temperature difference Note...
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PUM2 n2MN Pump control type R2 Minimum speed R2 Selection: OnOF, PULS, PSOL, PHEA Adjustment range: (10) 30 … 100 % Factory setting: OnOF Factory setting: 30 % With this parameter, the pump control type can be adjusted. The following types In the adjustment channel n2MN a relative minimum speed for a pump connected can be selected: can be allocated to the output R2.
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Maximum temperature limitation heat exchange Minimum temperature limitation heat exchange MX3O / MX3F MN3O / MN3F Maximum temperature limitation Minimum temperature limitation Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F] Adjustment range: 0.0 … 90.0 °C [30.0 … 190.0 °F] Factory setting: Factory setting (only if Arr = 2): MX3O: 60.0 °C [140.0 °F]...
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Arrangement 3: Solar system with backup heating The controller calculates the temperature difference between collector sensor S1 Sensor S3 can optionally be used as the reference sensor for the thermal disinfec- and store sensor S2. If the difference is larger than or identical to the adjusted tion function (OTD) or the store emergency shutdown option (OSEM).
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Display channels Channel Description Connection terminal Page INIT ODB initialisation active ODB filling time active STAB ODB stabilisation in progress Temperature collector TSTB Temperature store 1 base TSTT Temperature store 1 top TDIS Thermal disinfection temperature (thermal disinfection) Temperature sensor 4 Temperature flow sensor S1 / S4 / VFD Temperature return sensor...
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Adjustment channels Channel Description Factory setting Page Collector minimum limitation option Collector minimum temperature 10 °C [50 °F] Antifreeze option Antifreeze temperature 4.0 °C [40.0 °F] Tube collector option TCST OTC starting time 07:00 TCEN OTC ending time 19:00 TCRU OTC runtime 30 s TCIN...
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System-specific functions The following adjustments are used for the specific functions in system 3. The chan- nels described are not available in any other system. Thermostat function Backup heating Use of surplus t1 O, t2 O, t3 O energy Thermostat switch-on time Adjustment range: 00:00 …...
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Thermal disinfection of the upper DHW zone This function helps to contain the spread of Legionella in DHW stores by system- atically activating the backup heating. For thermal disinfection, the temperature at the reference sensor will be moni- tored. Protection is ensured when, during the monitoring period, the disinfection temperature is continuously exceeded for the entire disinfection period.
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Arrangement 4: Solar system with stratified store The controller calculates the temperature difference between collector sensor store temperature (S1MX / S2MX) is reached. The priority logic causes priority S1 and store sensors S2 and S3. If the difference is larger than or identical to the loading of the upper store zone, if possible.
Display channels Channel Description Connection terminal Page Temperature collector TSTB Temperature store 1 base TSTT Temperature store 1 top Temperature sensor 4 Temperature flow sensor S1 / S4 / VFD Temperature return sensor S4 / VFD Temperature Grundfos Direct Sensor™ Flow rate Grundfos Direct Sensor™...
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Adjustment channels Channel Description Factory setting Page OSTC Store cooling option OHOL Holiday cooling option THOL Holiday cooling temperature 40 °C [110 °F] Collector minimum limitation option Collector minimum temperature 10 °C [50 °F] Antifreeze option Antifreeze temperature 4.0 °C [40.0 °F] PRIO Priority Loading break (store sequence control)
Arrangement 5: Solar system with 2 stores and valve logic temperature (S1MX / S2MX) is reached. The priority logic causes priority loading of The controller calculates the temperature difference between collector sensor S1 and store sensors S2 and S3. If the difference is larger than or identical to the store 1.
Display channels Channel Description Connection terminal Page Temperature collector TST1 Temperature store 1 base TST2 Temperature store 2 base Temperature sensor 4 Temperature flow sensor S1 / S4 / VFD Temperature return sensor S4/VFD Temperature Grundfos Direct Sensor™ Flow rate Grundfos Direct Sensor™ / PWM feedback signal VFD / PWM1 Speed relay R1 Operating hours R1...
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Adjustment channels Channel Description Factory setting Page OSTC Store cooling option OHOL Holiday cooling option THOL Holiday cooling temperature 40 °C [110 °F] Collector minimum limitation option Collector minimum temperature 10 °C [50 °F] Antifreeze option Antifreeze temperature 4.0 °C [40.0 °F] PRIO Priority Loading break (store sequence control)
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Arrangement 6: Solar system with 2 stores and pump logic The controller calculates the temperature difference between collector sensor S1 priority loading of the store selected in the PRIO channel, if possible. If PRIO = 0, and store sensors S2 and S3. If the difference is larger than or identical to the corre- both stores will be loaded simultaneously.
Display channels Channel Description Connection terminal Page Temperature collector TST1 Temperature store 1 base TST2 Temperature store 2 base Temperature sensor 4 TSTT Temperature store top Temperature flow sensor S4 / VFD Temperature return sensor S4 / VFD Temperature Grundfos Direct Sensor™ Flow rate Grundfos Direct Sensor™...
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Adjustment channels Channel Description Factory setting Page S2MX Maximum store temperature 2 60 °C [140 °F] Collector emergency temperature 130 °C [270 °F] Collector cooling option Maximum collector temperature 110 °C [230 °F] OSYC System cooling option DTCO Switch-on temperature difference cooling 20.0 K [40.0 °Ra] DTCF Switch-off temperature difference cooling...
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Arrangement 7: Solar system with east-/west collectors and 1 store The controller calculates the temperature difference between collector sensors Sensor S4 can optionally be used as the reference sensor for the store emergency S1 and S3 and store sensor S2. If the differences are larger than or identical to the shutdown option (OSEM).
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Display channels Channel Description Connection terminal Page COL1 Temperature collector 1 Temperature store COL2 Temperature collector 2 Temperature sensor 4 TSTT Temperature store top Temperature flow sensor S4 / VFD Temperature return sensor S4 / VFD Temperature Grundfos Direct Sensor™ Flow rate Grundfos Direct Sensor™...
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Adjustment channels Channel Description Factory setting Page OCC2 Collector cooling option collector 2 CMX2 Maximum collector temperature 2 110 °C [230 °F] OSYC System cooling option DTCO Switch-on temperature difference cooling 20.0 K [40.0 °Ra] DTCF Switch-off temperature difference cooling 15.0 K [30.0 °Ra] OSTC Store cooling option...
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Arrangement 8: Solar system with backup heating by solid fuel boiler The controller calculates the temperature difference between collector sensor S1 A solid fuel boiler will be controlled by relay 2, if the temperature difference be- and store sensor S2. If the difference is larger than or identical to the adjusted tween sensors S4 and S3 is larger than or identical to the adjusted switch-on tem- perature difference (DT3O), until the adjusted minimum (MN3O) and maximum switch-on temperature difference (DT O), the solar pump will be activated by relay...
Display channels Channel Description Connection terminal Page INIT ODB initialisation active ODB filling time active STAB ODB stabilisation in progress Temperature collector TSTB Temperature store 1 base TSTT Temperature store 1 top TFSB Temperature solid fuel boiler Temperature flow sensor Temperature return sensor Temperature Grundfos Direct Sensor™...
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Adjustment channels Channel Description Factory setting Page OSTC Store cooling option OHOL Holiday cooling option THOL Holiday cooling temperature 40 °C [110 °F] Collector minimum limitation option Collector minimum temperature 10 °C [50 °F] Antifreeze option Antifreeze temperature 4.0 °C [40.0 °F] Tube collector option TCST OTC starting time...
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System-specific functions Speed control The following adjustments are used for the specific functions in system 8. ∆T control for the backup heating by a solid fuel boiler DT3S Set temperature difference Adjustment range: 1.5 … 30.0 K [3.0 … 60.0 °Ra] DT3O Factory setting: 10.0 K [20.0 °Ra] Switch-on temperature difference...
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Minimum speed n2MN PUM2 Minimum speed R2 Pump control type R2 Adjustment range: (10) 30 … 100 Selection: OnOF, PULS, PSOL, PHEA Factory setting: 30 Factory setting: OnOF With this parameter, the pump control type can be adjusted. The following types In the adjustment channel n2MN a relative minimum speed for a pump connected can be selected: can be allocated to the output R2.
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Maximum temperature limitation solid fuel boiler Minimum temperature limitation solid fuel boiler MX3O / MX3F MN3O / MN3F Maximum temperature limitation Minimum temperature limitation Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F] Adjustment range: 0.0 … 90.0 °C [30.0 … 190.0 °F] Factory setting: Factory setting (only if Arr = 8): MX3O: 60.0 °C [140.0 °F]...
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Arrangement 9: Solar system with heating-circuit return preheating Heating-circuit return preheating will be activated by relay 2, if the temperature dif- The controller calculates the temperature difference between collector sensor S1 and store sensor S2. If the difference is larger than or identical to the adjusted ference between sensors S3 and S4 is larger or identical to the adjusted switch-on temperature difference (DT3O).
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Display channels Channel Description Connection terminal Page INIT ODB initialisation active ODB filling time active STAB ODB stabilisation in progress Temperature collector TSTB Temperature store 1 base TSTT Temperature store 1 top TRET Heating circuit temperature Temperature flow sensor Temperature return sensor Temperature Grundfos Direct Sensor™...
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Adjustment channels Channel Description Factory setting Page DTCF Switch-off temperature difference cooling 15.0 K [30.0 °Ra] OSTC Store cooling option OHOL Holiday cooling option THOL Holiday cooling temperature 40 °C [110 °F] Collector minimum limitation option Collector minimum temperature 10 °C [50 °F] Antifreeze option Antifreeze temperature 4.0 °C [40.0 °F]...
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Arrangement 10: Standard solar system with heat dump The controller calculates the temperature difference between collector sensor S1 sink. For safety reasons, excess heat dump will only take place as long as the store and store sensor S2. If the difference is larger than or identical to the adjusted temperature is below the non-adjustable shutdown temperature of 95 °C [200 °F].
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Display channels Channel Description Connection terminal Page Temperature collector Temperature store Temperature sensor 3 TSTT Temperature store top Temperature sensor 4 Temperature flow sensor S1 / S4 / VFD Temperature return sensor S4 / VFD Temperature Grundfos Direct Sensor™ Flow rate Grundfos Direct Sensor™ / PWM feedback signal VFD / PWM1 Speed relay R1 h P1...
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Adjustment channels Channel Description Factory setting Page TCRU OTC runtime 30 s TCIN OTC standstill interval 30 min Grundfos Direct Sensor™ OHQM Heat quantity measurement option VFD allocation FMAX Maximum flow rate 6.0 l/min MEDT Antifreeze type MED% Antifreeze concentration (only if MEDT = propylene or ethylene glycol) 45 % MAN1 Manual mode R1...
Operation and function System-Monitoring-Display Buttons System-Monitoring-Display ê forwards (+) Ⓢ (selection / The System-Monitoring-Display consists of 3 blocks: channel display, tool bar and adjustment mode) system screen. backwards (-) Channel display The controller is operated via the 3 push buttons below the display. Button 1 (+) is used for scrolling forwards through the menu and increasing adjustment values.
System screen Permanently Flashing Status indications: shown The system selected is indicated in the System-Monitoring-Display. It consists of several system component symbols which are – depending on the current status of Relay 1 active ⓵ the system – either flashing, permanently shown or not indicated. Relay 2 active ⓶...
Commissioning Commissioning forwards (+) 1. Language Î Adjust the desired menu language. Ⓢ (selection / LANG adjustment mode) Language selection Selection: dE, En, Fr, ES, It 2 backwards (-) Factory setting: dE Î Connect the device to the mains. The controller runs an initialisation phase. 2.
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Commissioning Commissioning Only confirm the security enquiry if you are sure 7. Minimum speed that you wish to change the system selection. Î Adjust the minimum speed for the corresponding Security enquiry: pump. Î In order to confirm the security enquiry, press nMN, n1MN, n2MN button 3.
Commissioning Channel overview Display channels Confirmation Completing the commissioning menu Note The display and adjustment channels as well as the adjustment ranges de- After the last channel of the commissioning menu has pend on the system selected, the functions and options as well as on the been adjusted and confirmed, the controller asks for system components connected to the controller.
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Display of collector temperatures Display of sensors 3, 4 and VFD COL, COL1, COL2 S3, S4, VFD Collector temperature Sensor temperatures Display range: -40 … +260 °C [-40 … +500 °F] Display range: -40 … +260 °C [-40 … +500 °F] VFD: 0 …...
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Display of flow rate / PWM feedback signal Display of heat quantity kWh/MWh Flow rate / PWM feedback signal Heat quantity in kWh / MWh Display range: depending on the sensor type used and the PWM feedback signal Display channel selected respectively Indicates the energy gained in heat quantity –...
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Operating hours counter SDIS h P / h P1 / h P2 Display of starting time Operating hours counter Display range: 00:00 … 24:00 (hh:mm) Display channel If the thermal disinfection option (OTD) is activated and a starting delay time has The operating hours counter accumulates the operating hours of the correspond- been adjusted, the adjusted starting time is displayed as SDIS (flashing).
Adjustment channels When the temperature difference reaches or falls below the adjusted switch-off System selection temperature difference, the respective relay switches off. Note The switch-on temperature difference must be at least 0.5 K [1 °Ra] high- er than the switch-off temperature difference. System selection Adjustment range: 1 …...
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Adjustment for standard pump with speed control • PULS (burst control via semiconductor relay) Adjustment for high-efficiency pump (HE pump) • PSOL (PWM profile for a HE solar pump) • PHEA (PWM profile for a HE heating pump) RIS / RIS1 / RIS2 / RIS3 Rise Minimum speed Adjustment range: 1 …...
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PWM feedback signal Maximum store temperature PFB1, PFB2 S MX / S1MX / S2MX PWM feedback signal Maximum store temperature Adjustment range: OFF, A, b Adjustment range: 4 … 95 °C [40 … 200 °F] Factory setting: OFF Arr 10: 4 … 90 °C [40 … 190 °F] (A = Wilo pump, b = Grundfos pump) Factory setting: 60 °C [140 °F] With this parameter, the type of the PWM feedback signal of a bidirectional HE...
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Collector limit temperature Collector cooling Collector emergency shutdown OCC / OCC1 / OCC2 CMX / CMX1 / CMX2 EM / EM1 / EM2 Collector cooling option Collector maximum temperature Collector limit temperature Adjustment range: OFF / ON Adjustment range: Adjustment range: 80 … 200 °C [170 … 390 °F] Factory setting: OFF 70 …...
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System cooling Store cooling OSYC DTCO OSTC OHOL System cooling option Store cooling option Switch-on temperature difference Holiday cooling option Adjustment range: OFF / ON Adjustment range: Adjustment range: OFF / ON Adjustment range: OFF / ON Factory setting: OFF 1.0 …...
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Minimum collector limitation Note Since this function uses the limited heat quantity of the store, the anti- freeze function should only be used in regions with few days of tempera- tures around the freezing point. The antifreeze function will be suppressed if the store temperature falls OCN / OCN1 / OCN2 CMN / CMN1 / CMN2 below +5 °C [+40 °F] in order to protect the store from frost damage.
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Store sequence control (only available if priority is set to PRIO SE 1, SE 2, 1 or 2) If priority PRIO 0 is adjusted and the switch-on conditions for both stores are fulfilled, the stores are loaded in parallel (Arr 6) or in store sequence control (Arr 4, 5) respectively, beginning with the store with the lowest temperature.
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Grundfos Direct Sensor™ registration This function is used for improving the switch-on behaviour in systems with non-ideal sensor positions (e. g. with some tube collectors). This function operates within an adjusted time frame. It activates the collector circuit pump for an adjust- able runtime between adjustable standstill intervals in order to compensate for the delayed temperature measurement.
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Heat quantity measurement with fixed flow rate value Heat quantity measurement with a PWM feedback signal The heat quantity balancing (estimation) uses the difference between the flow and Heat quantity measurement with a PWM feedback signal is possible in all system return temperatures and the entered flow rate (at 100 % pump speed).
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Sensor allocation for heat quantity measurement: Drainback option Note A drainback system requires additional components such as a holding tank. Arrangement SRET SRET SRET The drainback option should only be activated if all components required are properly installed. Note The drainback option is only available in system with one store and one collector (Arr 1, 2, 3, 8 and 9).
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Time period – switch-on condition Booster function OBST option tDTO Booster function Time period – switch-on condition Adjustment range: ON / OFF Adjustment range: 1 … 100 s Factory setting: OFF Factory setting: 60 s This function is used for switching on a second pump when filling the solar system. The parameter tDTO is used for adjusting the time period during which the When solar loading starts, R2 is energised in parallel to R1.
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Language Reset LANG RESE Language selection Reset function Selection: dE, En, Fr, ES, It By means of the reset function, all adjustments can be set back to their factory Factory setting: dE settings. In this adjustment channel the menu language can be selected. Î...
Troubleshooting If a malfunction occurs, the display symbols will indicate an error code: The symbol ☍ is indicated on the display and the symbol ⚠ is flashing. The symbols ☍ and ⚠ are flashing. Sensor fault. An error code instead of a temperature is shown on Error message of the bidirectional pump, see page 56.
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(warmest collector output); use immersion sleeve of the respective Plausibility control of the option collector. Clean it tube collector special function Heat exchanger too small? Replace with correctly sized one. Note For answers to frequently asked questions (FAQ) see www.resol.com.
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Stores cool down at night. Check the non-return valve in Further pumps which are connect- Collector circuit pump runs during warm water circulation - o.k. ed to the solar store must also be the night? checked. Check controller Clean or replace it. Collector temperature at night is The gravitation circulation in the higher than the outdoor temperature.
Be it solar thermal, heating or DHW heat exchange controllers – with the DL3 ature and flow rate. you can easily and conveniently log system data of up to 6 RESOL controllers. Get a comprehensive overview of all controllers connected with the large full graphic...
Index Accessories........................69, 70 Minimum collector temperature ................... 59 Antifreeze function ......................59 Monitoring-Display ......................46 Mounting ..........................5 Backup heating ........................20 Booster function ....................... 64 Operating mode ........................ 64 Collector cooling ......................57 Priority logic ........................59 Collector emergency shutdown ..................57 Commissioning ........................
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This mounting- and operation manual including all parts is copyrighted. Another some examples. They can only be used at your own risk. No liability is assumed for use outside the copyright requires the approval of RESOL – Elektronische Rege- incorrect, incomplete or false information and / or the resulting damages.
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