www.regulus.eu
SRS1 T
EN
Installation and Operation Manual
REGULUS SRS1 T Solar Controller
Page 1: ...www regulus eu SRS1 T SRS1 T EN Installation and Operation Manual REGULUS SRS1 T Solar Controller ...
Page 2: ...ds R1 for variants 1 and 2 21 5 23 Purging time variant 3 21 5 24 Circ pause time variant 3 21 5 25 Circ Tmin variant 3 21 5 26 Circ hysteresis variant 3 21 5 27 Circ sensor variant 3 21 5 28 Circ periods variant 3 21 6 Circ hysteresis variant 22 6 1 Seizing protection 22 6 2 Frost protection 22 6 3 System protection 22 6 4 Collector protection 23 6 5 Collector alarm 23 6 6 Recooling 23 6 7 Anti l...
Page 3: ...3 This Instruction Manual applies to the following hardware versions SRS1 T SRS1 T 1 output mechanical relay 230VAC 1 PWM 0 10V output for high efficiency pumps 3 inputs for Pt1000 temperature sensors ...
Page 4: ...vices e g safety valve air vent valve etc to be installed into a solar circuit Installation of the unit may only be carried out by a specialist who is trained on the required level For the user Make sure that the specialist gives you detailed information on the function and operation of the controller Always keep these instructions in the vicinity of the controller Any changes to the controller or...
Page 5: ...e despite it being obviously damaged Use of non original spare parts Use of the device for other than its intended purpose Operation above or below the limit values listed in the Specification section Force majeure A 5 Warranty Safety Instructions A 4 Changes to the unit Changes additions to or conversion of the unit are not permitted without a written permission from the Manufacturer It is forbid...
Page 6: ...o 300 C 3 S1 S3 Permissible cable length of sensors and accessories Collector sensor 30 m other Pt1000 sensors 10 m PWM 0 10V 3 m Mechanical relay 10 m Clock backup period 24 hrs Permissible ambient conditions Ambient temperature for controller operation 0 C 40 C for transport storage 0 C 60 C Air humidity for controller operation max 85 rel humidity at 25 C for transport storage no moisture conde...
Page 7: ...es usual preset parameters in factory setting further measurement and switching applications using a temperature difference and a thermostat function B 3 Description Description IMPORTANT INFORMATION ON DISPOSAL IN COMPLIANCE WITH THE EUROPEAN DIRECTIVE 2002 96 ES This product must not be disposed of with unsorted municipal waste Please dispose of this product by returning it to the point of sale ...
Page 8: ... part of the housing up to the selected position and mark the 3 mounting holes Make sure that the wall surface is as even as possible so that the housing does not become distorted when it is screwed on 5 Mark the position on the wall with a pencil Using a drill and size 6 bit drill 3 holes at the points marked on the wall and push in the plugs Fig C 1 2 6 Insert the upper screw and screw it in sli...
Page 9: ... cables such as temperature sensor cables must be routed separately from mains voltage cables Feed temperature sensor cables only into the right hand side of the unit and mains voltage and relay cables only into the left hand side The controller is not equipped with a mains switch For this purpose please use e g a circuit breaker The cables being connected to the unit must not be stripped by more ...
Page 10: ...n at least 0 75 mm2 Max sensor lead length for S2 and S3 is 10 m and its cross section at least 0 75 mm2 Make sure there is no contact resistance in the wiring Select the proper location for the sensor where it feels the right temperature Use only immersion sensors Pipe mounted sensors only in exceptional cases Make sure that the terminals of extension cables and sensors are properly tightened Ins...
Page 11: ...1S1S2S2S3S3 V Vi SENSORS PWM S1S1S2S2S3S3 V Vi SENSORS PWM S1S1S2S2S3S3 V Vi Low voltage max 12V sensor connection Terminal connection for S1 sensor 1 S1 sensor 1 GND S2 sensor 2 S2 sensor 2 GND S3 sensor 3 S3 sensor 3 GND V 0 10V PWM output for controllable high efficiency pumps 0 10V gnd PWM output for controllable high efficiency pumps Vi PWM input to retrieve actual flow rate of some high effi...
Page 12: ...nents may be mandatory such as check valves non return valves safety temperature limiters scalding protectors etc and must therefore be provided Warning S2 R1 V1 V1 S2 S3 R1 S2 S3 S1 S1 S1 S1 V1 R1 S2 S3 V1 R1 S2 S1 V1 V1 R1 R1 S2 4 Hydraulická zapojení SRS1 T 5 3 2 6 1 S1 4 Solar thermal system 3 Solar thermal system with DHW recirculation 1 Solar thermal system with aux electric heat source 2 So...
Page 13: ...owly red if manual operation mode is set flashes quickly red if an error occurred Entries are made using four keys 3 4 which are assigned to different functions depending on the situation The esc key 3 is used to cancel an entry or to exit a menu If applicable there will be a request for confirmation as to whether the changes which have been made should be saved The function of each of the other t...
Page 14: ...nally menu 4 2 under operating mode Manual should be used to test the switch outputs with the consumers connected and to check the sensor values for plausibility Then switch on automatic mode If you decide not to use the commissioning help you should make the necessary settings in the following sequence Menu 10 Language Menu 7 4 Time and date Menu 7 1 Program selection Menu 5 Settings all values M...
Page 15: ...ing help program selection sensor calibration clock etc Lock against unintentional setting changes For diagnosis in the event of an error Language selection In the graphics menu the display shows from the top right corner downwards temperatures at connected sensors then the current speed of a PWM controlled solar pump and the current flow rate in the bottom right corner calculated from the incomin...
Page 16: ...ad of the measurement value then there may be a defective temperature sensor or its connection to the controller If the cables are too long or the sensors are not placed optimally the result may be small deviations in the measurement values In this case the display values can be compensated for using the function of sensor compensation see Chapter 7 5 What sensors are displayed depends on the sele...
Page 17: ...splay of operating hours of the solar pump connected to the controller various time spans are available last day week month year 2 2 Average ΔT Display of the average daily temperature difference between the solar collector and the thermal store This provides a clearly organised display of the data listed under 2 1 2 2 as a bar graph Various time ranges are available for comparison The two left ha...
Page 18: ...mperatures and operating conditions of connected consumers 3 1 Schematic 3 2 Overview In the Overview mode the measured temperatures and operating conditions of connected consumers are shown in a text form In the Alternating mode the Schematic and Overview modes are displayed alternately in 5s intervals 3 3 Alternating 3 4 Eco display mode After 2 min of inactivity the display goes to standby mode...
Page 19: ... controller functions are switched off This can lead for example to overheating on the solar collector or other system components The measured temperatures are displayed even when the controller is Off Warning Danger 4 4 Fill system This is not used for Regulus solar thermal systems The relay and thus the connected consumer are switched on and off by pressing a key with no regard to the current te...
Page 20: ...he set temperature difference is too small this may result in ineffective operation depending on the system and sensor positions Special switching conditions apply for speed control see 7 3 Speed control V1 Caution Caution Various settings can be made depending on the selection of hydraulic variant 1 6 The following pages contain generally valid descriptions for the settings 5 4 Tmax S2 Danger Sen...
Page 21: ... selected the condition of a min tem perature at this sensor 5 25 shall be also met 5 24 Circ pause time variant 1 The period of time when the circulation pumps is stopped after the circulation time has expired 5 23 After the pause time the circulation pause cycle repeats 5 25 Circ Tmin variant 1 If the temperature at the hot water sensor drops below this set temperature during the period of time ...
Page 22: ...the collector As Regulus solar thermal systems are filled with antifreeze fluid the antifreeze protection shall remain off Protection against pump seizing by regular short running of a pump or a valve Seizing may occurafterlongerinactivityofvalvesorpumps Iftheseizingprotectionisactivated thecontroller switches the relay in question and the connected solar consumer on every day at 12 00 or weekly o...
Page 23: ...e in the storage tank exceeds the value Recooling Tset and the collector is at least by 20 C cooler than the storage tank the solar pump starts The storage tank is then cooled down until the Recooling Tset is reached This function enables to release excess heat from the storage tank considerately and without solar fluid overheating via piping and collectors into the ambient air It is recommended t...
Page 24: ...nella bacteria it must be ensured that the temperature is raised to the necessary value and at the same time there must be water circulation in the storage tank and piping system by means of other additional energy sources and external control units Caution This displays the date and time of the last successful heat up 6 7 4 AL heat During this periods the AL heat up is attempted 6 7 5 AL times Du...
Page 25: ...oning by the specialist Incorrect program selection can lead to unpredictable errors If a program is changed to another one settings are reset to default values This menu contains the settings for speed control output V1 7 2 Signal V1 7 2 1 Type of Signal Here the pump type w speed control shall be entered 0 10V Speed control of a high efficiency pump by 0 10V signal PWM Speed control of a high ef...
Page 26: ... 7 2 3 Output Signal This signal is put out when the pump is switched off pumps that can detect cable break need a minimum voltage This signal is needed to turn the pump on at minimum speed This determines the output voltage for the maximum performance of the pump that is used e g during purging or manual operation Displays the set signal in text and a graphical diagram Special functions 7 2 4 0 1...
Page 27: ...rence sensors collector and storage tank is greater than the set value then the speed is increased by one stage after the Sweep time elapses If the temperature difference ΔT between the reference sensors is below the set value then the speed is decreased by one stage after the Sweep time elapses If the controller has adjusted the speed of the pump down to the smallest stage and the ΔT between the ...
Page 28: ...ump model and pump stage 7 3 4 Maximum speed 7 3 5 Minimum speed 7 3 6 Setpoint 7 3 7 Setpoint ΔT The maximum speed of the pump is specified here The pump runs at the set speed during adjusting and the flow rate can be established The minimum speed of the pump with output V1 switched on This value is the control setpoint for Mode M3 see 7 3 1 If the value at the collector sensor drops below this t...
Page 29: ...n Starting the commissioning help guides you in the correct order through the basic settings necessary for commissioning and provides brief descriptions of each parameter in the display Pressing the esc key takes you back to the previous value so you can look at the selected setting again or adjust it if desired Pressing the esc more than once takes you back to the selection mode thus cancelling t...
Page 30: ...hin one minute then the solar pump is switched on for the set Purging time so that the medium to be measured can be moved to the collector sensor If this still does not result in a normal switch on condition then the start help function is subject to a 5 minute lockout time This function shall be activated by an expert only in case when problems with acquiring measured values appear First of all i...
Page 31: ...tatistics 3 Display mode 4 Operating mode 7 4 Time date 8 Menu lock 9 Service data To lock the other menus select Menu lock on To enable the menus again select Menu lock off 8 Menu lock Menu 8 Menu lock can be used to secure the controller against unintentional changing of the set values The menu is closed by pressing esc or se lecting Exit menu lock Menu lock ...
Page 32: ...vice data Enter the values at the time when the error occurs e g in the table Caution 9 1 9 31 9 2 9 32 9 3 9 33 9 4 9 34 9 5 9 35 9 6 9 36 9 7 9 37 9 8 9 38 9 9 9 39 9 10 9 40 9 11 9 41 9 12 9 42 9 13 9 43 9 14 9 44 9 15 9 45 9 16 9 46 9 17 9 47 9 18 9 48 9 19 9 49 9 20 9 50 9 21 9 51 9 22 9 52 9 23 9 53 9 24 9 54 9 25 9 55 9 26 9 56 9 27 9 57 9 28 9 58 9 29 9 59 9 30 9 60 ...
Page 33: ...33 10 Language Menu 10 Language can be used to select the language for the menu guidance This is queried automatically during initial commis sioning Language ...
Page 34: ...sensor input at the controller or the connecting cable is defective Temperature resistance table for sensors in Chap B 2 Collector alarm Means that the collector temperature has exceeded the value set in Menu 6 5 Restart Means that the controller was restarted for example due to a power failure Check the date and time Time Date This message appears automatically after a mains failure because the t...
Page 35: ...d replace it Then first re commission the controller and check the function of the switch outputs in manual mode as described in Chap 4 2 Fuse Malfunctions additional information Only use the supplied spare fuse or a fuse of the same design with the following specifications T2A 250V Z 2 Replacing the fuse Z 2 1 Danger Danger Repairs and maintenance may only be performed by a specialist Before work...
Page 36: ...nce Check the date and time see Chap 7 4 Assess check plausibility of analyses see Chap 2 Check the error memory see Chap 2 5 Verify check plausibility of the current measurement values see Chap 1 Check the switch outputs consumers in manual mode see Chap 4 2 Possibly optimize the parameter settings Caution 2019 We reserve the right to errors changes and improvements without prior notice REGULUS s...
