Installation and user guide
Contents
1. 525 EEENNNDS COMMS LINK H 240V AC MAINS SUPPLY If slave units are used From 16A MCB or Link with A amp B connections APPLIANCE LIVE SWITCH 13A fused outlet Volt free contact Can be used to switch live feed to appliance NOTE If load exceeds 13A CLAMP a separate contactor Install onto incoming mains must be used Live or Neutral cable to building g ISOLATOR Must be double pole IMMERSION HEATER Max Load 3kW The multi fuction relay can be used to switch any load on for a set duration once an export threshold has been reached The maximum relay current should not be exceeded an additional contactor may be used for larger loads Fault Signal RELAY MAINS F O 526 EEENNNGS COMMS LINK 240V AC MAINS SUPPLY If slave units are used From 16A MCB or Link with A amp B connections 13A fused outlet TO BMS SYSTEM Volt free contact Contact is closed when unit Is powered Contact opens if fault occurs CLAMP Install onto incoming mains Live or Neutral cable to building ISOLATOR Must be double pole IMMERSION HEATER Max Load 3kW If a fault signal for a BMS system is required the multi function can be set to de activated when a fault occurs 11 4 Installer Settings Once the unit is mounted and wired the installer will need to set parameters as required for the particular installation Before applying power to the unit the DIP switches will need to be set 4 1 D2. 30m The water heating can be boosted to ensure hot water by a given time When heating water in boost mode the immersion heater will be fully on regardless of available free power Set the On time and Duration for timed hot water boost If timed water heating boost is not required set the duration to Oh Om oe ss Timed Boost B 17 00 1h 15m Water heating boost can be set for twice a day A amp B Set the On time and Duration for timed hot water boost If timed water heating boost is not required set the duration to Oh Om 5 5 Manual Hot Water Boost In addition to the timed hot water boost option the water heating can be boosted manually You may wish to use this function if you have an unexpected hot water demand See section 5 2 for Timed Boost option Manual Boost anual Boost ON for gt 1h e m lt To manually boost the hot water press and hold P then use the vy and A buttons if you want to change the boost time Confirm boost by pressing gt again The Hot Water Boost operation will then start The water heating will then be boosted for the set duration or until the water is hot whichever is sooner Hot Water Boost CANCELLED To cancel boost mode press and hold lt for 2 seconds 5 6 Error Messages If a fault condition occurs an error message will be displayed and the LED will flash red The error will be logged in the Fault Log Normal operation will continue once the fault condition has cleare
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4. Close the clamp around one of the cables Live or Neutral from the meter this can be at the meter location or inside the consumer unit IMPORTANT Ensure the clamp is securely closed around the cable Connect the clamp wire to the CLAMP terminals inside the immerSUN Don t worry about polarity The clamp wire can be extended if required however due to the very small signal from the clamp a maximum length of 3m is recommended Longer lengths may affect the performance of the immerSUN 3 4 Wiring Diagrams Single Immersion Heater COMMS COMMS LINK 240V AC MAINS SUPPLY If slave units are used From 16A MCB or Link with A amp B connections 13A fused outlet CLAMP Install onto incoming mains Live or Neutral cable to building ISOLATOR Must be double pole IMMERSION HEATER Max Load 3kW For simple single heater control relay connections not required comms link only needed if slave devices are used Also see Alternative Mains Wiring diagram Alternative Mains Wiring MAINS EEENNNDOS CONSUMER UNIT 1 5mm 4 Core With 16A MCB ISOLATOR Must be double pole IMMERSION HEATER Max Load 3kW As an alternative to using two flex cables one 4 core cable may be used for the mains wiring Dual Immersion Heater COMMS MAINS COMMS LINK 240V AC MAINS SUPPLY If slave units are used From 16A MCB or Link with A amp B connections 13A fused outlet CLAMP Install onto in
5. I MMersuUN Water heating for your PV system Installation and user guide A CO passionate about green Contents 1 Overview 4 2 Technical Specifications 5 3 Installation 6 3 1 Mounting 6 3 2 Electrical Connections 7 3 3 Clamp Installation 8 3 4 Wiring Diagrams 8 4 Installer Settings 12 4 1 DIP Switch Settings 12 4 2 Installation Setup 13 4 3 Installer Menu 14 5 User Operation 16 5 1 Controls and Display 16 5 2 Changing Values 16 5 3 Normal Operation Display 17 5 4 Main Menu 18 5 5 Manual Hot Water Boost 19 5 6 Error Messages 19 6 Troubleshooting 20 7 Warranty 21 8 Conformance 22 9 Commissioning Sheet 23 1 Overview Thank you for choosing immerSUN This intelligent device is a sensible and practical addition to your PV or Wind micro generation system Water is heated via your existing immersion heater using surplus power that would otherwise have been exported to the grid Please read and follow this guide to ensure many years of trouble free operation and savings Key features e Heats water from your PV system or Wind Turbine e Effectively adjusts power levels to the immersion heater keeping the exported power at virtually zero e The consumer no longer needs to be at home to use the free electricity whatever the weather e No need to change the immersion heater e Suitable for all electrical microgeneration systems Built in hot water boost timer Ma
6. IP Switch Settings The default position of the DIP switches is all four set to ON For the majority of installations this will be the correct setting However if slave units are connected then they may need to be set differently see table below Default settings show in Italics S1 2 MODBUS Address Select Notes OFF OFF 1 Slave Clamp not used control is via master OFF ON 2 Slave Clamp not used control is via master ON OFF 3 Slave Clamp not used control is via master ON ON Master Software Selected Address Clamp is required 3 Termination Resistor Select ON RS485 termination resistor ENABLED Set to ON if this is at the end of the communication chain If the unit is in the middle of the chain set to OFF Where OFE R9485 termination resistor DISABLED there are only two devices connected set both to ON S4 Clamp Burden Resistor Select ON Internal burden resistor ENABLED OFF Internal burden resistor DISABLED Use external resistor for supporting alternative clamps 12 4 2 Installation Setup At first switch on the immerSUN will run through the installation setup process follow the instructions on the display Step 1 INSTALLATION P ETUP PRESS gt Press gt to start the installation setup process as instructed Otherwise press lt to cancel Step 2 URN ON HEATER Ensure that the heater isolator is ON and that the HEN PRESS gt thermostat is closed i e the water in the cylinde
7. aiting 10 52 16 02 2012 Heating Water 10 52 16 02 2012 Heating water with power from PV system no Grid power is being used The current output power applied to load is shown Heating Water Heating Water Output 2925W Heating Water 2 Output 2925W Heating Water 2 10 52 16 02 2012 Today 12 562kWhI Total 5651kWh Heating water with power from Today 12 562kWh Total 5651kWh Dual Heater Mode PV system no Grid power is being used Current heater is eo show in brackets Water Hot Water Hot U The water is fully heated the 10 52 16 02 2012M Total 5651kWh immersion thermostat is open e Hot Water Boost Hot Water Boost Heating water at full power 5 ON for 1h 15m KEFEYE ELE EE regardless of available export e Master Slave Operation power Status of Slaves EAT WAIT Slave Devices Status Screen When MODBUS is enabled and the device is set as Master this screen will be shown giving the status of all the slave devices in the system Status Abbreviations HEAT Heating Water HOT Water Hot WAIT Waiting for sufficient export power ERR Error No device detected 17 5 4 Main Menu Main Menu Options Press Vor A for main menu Description Menu Screen Sub Menus View Savings The immerSUN measures and records IAIN MENU iew Savings energy applied to immersion heater As only the renewable energy is counted this is effectivel
8. coming mains Live or Neutral cable to building ISOLATORS Must be double pole IMMERSION HEATERS Max Load 3kW each Other loads can be used Two heaters can be controlled by using the multi function relay The heaters need not be in the same cylinder Heater no 1 takes priority Boiler Hot Water Boost COMMS COMMS LINK al 240V AC MAINS SUPPLY If slave units are used From 16A MCB or Link with A amp B connections 13A fused outlet BOILER HW CALL Volt free contact Connect to boiler wiring CLAMP Install onto incoming mains Live or Neutral cable to building E ISOLATOR Must be double pole IMMERSION HEATER Max Load 3kW Rather than using the immersion heater to boost hot water an external heat source e g a boiler can be used by making use of the multi function relay wired to the boiler hot water controls De strat Pump MAINS EEENNNOS COMMS LINK 240V AC MAINS SUPPLY If slave units are used From 16A MCB or Link with A amp B connections 13A fused outlet IMMERSION HEATER Max Load 3kW CLAMP Install onto incoming mains Live or Neutral cable to building DE STRAT PUMP With 3A fused isolator It may be desirable to use a de stratisfication pump to mix the cooler water at the bottom of the bottom of the cylinder with the hot water at the top this allows a top mounted immersion heater to heat all of the water in the cylinder 10 Threshold Switch COMMS MAINS Q
9. d Error Messages UNIT TEMPERATURE The internal temperature of the eo Heiig immerSUN is too high Check vents are clear AINS VOLTAGE MAINS VOLTAGE AC supply voltage is outside of Too HIGH 00 LOW the operating parameters ERROR The clamp has been reversed LAMP REVERSED the settings will need to be reset to reconfigure the unit See section 4 3 Reset Settings ERROR The output of the unit is OUTPUT OVERLOAD overloaded the heater is larger than 3kW 19 6 Troubleshooting Use the table below to help remedy the problem Any actions requiring opening the immerSUN and or testing voltages should only be carried out a competent person Contact your installer if in doubt Symptom Possible Cause Action Unit dead no display MCB Tripped Check MCB is ON LIN and LD terminals swapped Check supply voltage on LIN terminal Internal Fuse Blown Test fuse inside immerSUN Showing Water Hot even though No load present on LD terminal the water is cold Immersion heater isolator should be ON Check immersion heater thermostat is not open Immersion heater element could be open circuit Always showing Waiting PV system not generating sufficient power Wait for PV system power increase or reduce demand by switching off appliances Problem with signal from clamp Check clamp is fitted to correct cable Check clamp wire connections to terminals Heating water at ful
10. d I Load I 8 2A Shows AC mains current applied to load View Readings Temperature Uai S Shows internal temperature on the immerSUN Set Load INSTALLER MENU SET LOAD Auto Normal mode The output can be set set _Load Auto J gt Auto lt Set output to automatically track exported power to a given percentage SET LOAD Manual for testing purposes gt 100 lt Manually set output power for testing purposes only Relay Function The internal multi function relay can be set to operate as one of 7 different functions The currently enabled option is shown in brackets See appropriate wiring diagram for chosen relay function INSTALLER MENU Relay OFF RELAY FUNCTION gt Two Heaters lt Two Heaters 2 Heater Use relay to switch load output between two heaters Heater no 1 output takes priority see wiring diagram Heater no 2 output only heats when no 1 is fully heated RELAY FUNCTION gt Water Boost lt Water Boost Boost Relay controls boiler to heat water when in water boost mode rather than using the immersion heater RELAY FUNCTION gt De strat Pump lt De stratification Pump De strat Relay controls cylinder de stratification pump Pump is activated when immersion thermostat opens and runs until thermostat closes again The immersion thermostat is checked only once a minute so there may be a delay before the pump stops RELAY FUNCTION gt Threshold lt Threshold Threshld Relay ope
11. d by the terminals and the cord grips Failure to ensure good connection could result in fire or permanent damage to the unit NOTE The screw terminals are rising clamp type TERMINALS MAINS LIN LIVE IN 240V supply input should be from 16A MCB or 13A fused outlet LD LOAD Live output to immersion heater maximum load 13A or 3kW N NEUTRAL x3 Mains Neutral terminals All Neutral terminals are internally connected E EARTH x3 Mains Earth terminals All Earth terminals are internally connected IMPORTANT Earth MUST be connected RELAY used for some additional functions see wiring diagrams in section 3 4 NO NORMALLY OPEN Volt free normally open relay contact max current 13A COM COMMON Volt free common relay contact max current 13A NC NORMALLY CLOSED Volt free normally closed relay contact max current 13A CLAMP CLAMP CLAMP AC current clamp terminals COMMUNICATIONS A RS485 A RS485 communication terminal A D B RS485 B RS485 communication terminal B D GND DIGITAL GND Ground connection for future use 5V 5V OUTPUT 5 volt output connection for future use 3 3 Clamp Installation Correct positioning of the clamp is vital to the operation and efficiency of the immerSUN Incorrect installation may result in increased electrical costs to the user The clamp should be located at the main incoming grid supply to the building This will be the supply from the main electric meter NOT the PV generation meter
12. hrough the rear or bottom of the unit Use the 3 screws and wall plugs provided to mount the immerSUN at the chosen location DO NOT BLOCK VENTS The enclosure may get hot always keep vents clear of obstruction and allow sufficient clearance from walls ceilings and other objects Observe minimum clearances as shown below 100mm Omm 50mm 100mm 3 2 Electrical Connections Electrical connections should be made only by a competent person Do not attempt to wire this unit if you are not a qualified or an experienced electrician Installation may involve alterations to fixed wiring and opening the consumer unit there is risk of death by electrocution Choose the most suitable cable entry points rear or bottom and make the electrical connections to the unit according to the appropriate wiring diagram see section 3 4 Use the blanking plugs provided for unused cable entry points Alternative loads In some cases it may be desired to control the power to a load other than an immersion heater The load MUST be a simple resistive load e g an electric towel radiator storage heater etc The load must not exceed 3kW and must not include digital or analogue timers as they may be damaged by the proportional output control of the immerSUN IMPORTANT Be sure to fully tighten terminals checking the cables are securely clampe
13. ils due to damage from shipment handling storage accident abuse misuse or if it has been used or maintained in a manner not conforming to product manual instructions has been modified in any way or has had any serial number removed or defaced Repair by anyone other than 4eco or an approved agent will void this warranty The maximum liability of 4eco under this warranty is limited to the purchase price of the product covered by the warranty Prior to returning any defective product the end customer or the reseller from whom the end customer originally purchased the product must obtain a Return Materials Authorisation RMA number from 4eco All defective products should be returned to 4eco with shipping charges prepaid 4eco will not accept collect shipments Except as specifically provided in this agreement or as required by law the warranties and remedies stated above are exclusive and in lieu of all others oral or written express or implied Any and all other warranties including implied warranties or merchantability fitness for a particular purpose and non infringement of third party rights are expressly excluded 4eco shall not under any circumstances be liable to any person for any special incident indirect or consequential damages including without limitation damages resulting from use or malfunction of the products loss of profits or revenues or costs of replacement goods even if 4eco is informed in advanced of the possibility
14. l output even Clamp reversed when PV is not exporting The clamp has been reversed the settings will need to be reset to reconfigure the unit See section 4 3 Reset Settings Slave device status not showing on Communication link wires not master display properly connected Check continuity of communication wires to terminals A amp B Address conflict Check DIP switch positions Slave status screen not showing MODBUS not enabled on master Check MODBUS is enabled in Comms menu on master Address settings incorrect Check DIP switch positions 20 7 Warranty Subject to the provisions described below this product is protected for three 3 year against defects in material and workmanship Should this product fail to perform as described within the warranted period it will be repaired or replaced with the same or functionally equivalent product by 4eco at its discretion free of charge provided you 1 Return the failed product to 4eco with shipping charge prepaid and 2 provide 4eco with proof of the original date of purchase Returned or replacement products will be returned to you with shipping charges prepaid Replacement products may be refurbished or contain refurbished materials If 4eco by its sole determination is unable to repair or replace the defective product it will refund the depreciated purchase price of the product The warranty does not apply if in the judgement of 4eco the product fa
15. nual hot water boost function e Back lit LCD display shows energy saved output power and operating mode e Dual immersion heater control option Internal multi function relay in addition to the modulated power output Up to 4 devices can be daisy chained for master slave operation e MODBUS RS485 interface for system expansion and external data logging e Internal thermal protection e 3 year product warranty 2 Technical Specifications Electrical Specifications Description Nominal Minimum Maximum Supply Voltage VAC 240 220 260 Supply Frequency Hz 50Hz 45Hz 55Hz Load Current A 13 16 Load Power kW 3 3 2 Relay Contact Voltage VAC 250 Relay Contact Current A 16 Clamp Current A 100 Dimensions and weight Width mm 150 Depth mm 64 Height mm 140 Weight g 935 3 Installation 3 1 Mounting Often the most suitable location for the immerSUN is near to the consumer unit Usually all the connections required are available here The following should be considered when deciding upon the most suitable location s Close to the main incoming mains electrical supply of the property s Access to immersion heater supply cable this is usually at the consumer unit s Access to suitable supply via 16A MCB or 13A fused outlet User access to immerSUN controls and visibility of LCD screen e Adequate ventilation keeps vents clear and provide airflow around the unit Cable access point t
16. of such damages 21 8 Conformance EC Declaration of Conformity In accordance with EN ISO 17050 1 2004 We 4eco Ltd of 3 Church View Business Centre Binbrook Lincolnshire LN8 6BY England In accordance with the following Directives 2006 95 EC The Low Voltage Directive 2004 108 EC The Electromagnetic Compatibility Directive Hereby declare that Equipment Heater controller for microgeneration systems Model immerSUN Is in conformity with the applicable requirements of the following documents Ref No Title Edition Date BS EN 61000 6 1 Electromagnetic compatibility EMC Generic 2007 standards Immunity for residential commercial and light industrial environments BS EN 61000 6 3 Electromagnetic compatibility EMC Generic 2007 standards Emission standard for residential commercial and light industrial environments hereby declare that the equipment named above has been designed to comply with the relevant sections of the above referenced specifications The unit complies with all applicable Essential Requirements of the Directives Signed Name Lee Sutton Position Technical Director On 12 July 2012 22 9 Commissioning Sheet Model Serial Number Installation Company Installer Name Date of Installation Signed by Installer ImMMeErsSUN 23 TETE TSUN 4eco Ltd 3 Church View Business Centre Binbrook Lincolnshire LN8 6BY England 44 0 1472
17. ontrols and Display LCD DISPLAY STATUS LED SET BOOST DOWN UP Button Operation Alt Operation Description lt BACK SCREEN CHANGE Exit menu or change screen when not in menus Go down through list or decrease value y DOWN MENU i Enter Main Menu Go up through list or increase value A UP MENU Enter Main Menu gt SET BOOST Set value or hold to boost hot water 5 2 Changing Values To change values navigate to value you wish to change and press gt Arrows either side of the value to change will then be shown Use the W and A buttons to change the value Press again to store the new value Pressing lt will exit edit mode without changing the value Non Edit Mode Press P to edit value Edit Mode Value to be edited is indicated by gt lt symbols gt 1 lt 5 3 Normal Operation Display The table below summarises the operation of the immerSUN There a four main modes of operation Heating Water Water Hot Waiting and Hot Water Boost The mode is shown on the LCD display the LED allows the mode to be determined from a distance The display changes every two seconds showing the mode with additional information the time and date and the savings in kWh Normal Operation Mode amp LED status Mode Information Time amp Date Savings Description Waiting aiti Waiting for sufficient exported power to start heating water Heating Water eo W
18. r is cold ERROR HEATER An error will occur if no load is detected the immersion NOT DETECTED heater may be switched off at the isolator or the thermostat open because the water is hot already Press lt to go back to step 1 CHECKING The immerSUN will then perform a test to check the HEATER output and the heater Step 3 TURN INVERTER You will be asked to switch off the inverter this is so the master only OFF THEN PRESS gt immerSUN can detect import export direction Use the AC isolator of the PV system Step 4 ETTING UP Setting up will take about one minute IPLEASE WAIT master only INSUFFICENT If the import power is too small This could be because LOAD FOR TEST the inverter is still switched on or the heater thermostat is open circuit Press lt to go back to step 1 Step 5 INSTALLATION Once setup has finished this message will be displayed ETUP COMPLETE Step 6 Switch inverter back on again Wait for inverter to start working this usually takes 3 minutes If export is high enough the immerSUN will start heating water otherwise you will see the waiting screen 13 4 3 Installer Menu Installer Menu Options Press and hold V anv A for 5 seconds for installer menu Description Menu Screen Sub Menus View Readings INSTALLER MENU iew Readings AC Volts iew Readings AC Volts 245V Shows AC mains voltage at present iew Readings Grid I Grid I 12 5A Shows AC mains current at clamp View Readings Loa
19. rates when an export threshold is reached relay remains activated for set period of time even if export drops Export threshold level and relay on duration can be set as shown below HRESHOLD SET Export 500W THRESHOLD SET Durati 1h3em RELAY FUNCTION gt Fault Signal lt Fault Signal Fault Relay is activated if a fault condition occurs RELAY FUNCTION gt Always On lt Always On ON Relay is operated continuously This is for testing purposes only RELAY FUNCTION gt Always Off lt Always Off OFF Relay is disabled This is the default relay function Comms Options Options for setting up communication between devices INSTALLER MENU Comms Options COMMS OPTIONS Comms Disabled Communications Enable Disable Communication should be disabled unless slaves are connected or MODBUS is needed COMMS OPTIONS Baud Rate 9660 Baud Rate Baud rate is speed communication data transfer in bits per second The default baud rate is 9600 COMMS OPTIONS Address Master Device Address The communication address of the device each device connected should have a unique address If DIP switches for slave devices are ON they will override this setting The default address is Master Reset Settings INSTALLER MENU RESET SETTINGS Reset Settings CONFIRM Press gt Reset Settings Use to setup immerSUN after installation See section 4 2 15 5 User Operation 5 1 C
20. y saved energy IEW SAVINGS LEEMA Pee Today Show savings made today in kWh IEW SAVINGS Week 56kWh Week Show savings made this week in kWh IEW SAVINGS lonth 224kWh Month Show savings made this month in kWh IEW SAVINGS ear 1791kWh Year Show savings made this year in kWh IEW SAVINGS Total otal 3215kWh Shows total energy saved to date in kWh View Event Log AIN MENU Power On Log Details iew Event Log 14 53 12 06 12 alue Every normal operation event is logged along with the time and date of the event Code is the event code number Value is the value associated with the event View Fault Log POWER FAILED Code 105 Log Details iew Fault Log 14 53 12 06 12 alue Every change of status and any faults are recording in the log along with the time and date of the event Code is the fault code number Value is the value associated with the fault scale Settings Else ule Boe Time is used for Hot Water Boost and the event log Time is maintained during power outages for at least 48 hours SETTINGS SET DATE Set Date ELIJE YA Set Date The date is used for the event log Date is maintained during power outages for at least 48 hours SETTINGS SET CONTRAST Set Contrast gt 20 lt Set Display Contrast The display contrast can be adjusted if required 18 cont Timed Boost MAIN MENU TIMED BOOST A Timed Boost A imed Boost 96 30 oh
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