User Guide - ERS Mini Edition
Contents
1. temperature above 60 C on a minimum of a weekly basis This can NOT be achieved using ERS mini as it does not contain a timer feature In this instance ERS 4 is required Further advice on Legionella can be found at www hse gov uk legionnaires If you have technical problems please contact your installer in the first instance The following information will be required in order to provide you with the necessary assistance e ERS Model Number e ERS Serial Number e Type and number of heating elements connected e Location of ERS unit within the building PowerFlow Energy Ltd Barrs Court Netherwood Road For Support please email us GN Rotherwas Industrial Estate Herefordshire Email info powerflowenergy co uk HR2 6JU United Kingdom www powerflowenergy com Bree ela EUSER VLZ2. to the ERS device This acts as an isolation switch should the user wish to isolate the ERS unit from the mains supply Ensure the supply MCB is in the ON position then switch the isolator to the ON position The blue LED in the boost button will flash 5 times indicating ERS is booting up During boot up ERS is performing an auto calibration procedure and is ready to use once the LED stops flashing Ensure that the heating load is switch to the ON position if export is detected ERS will begin to operate automatically To switch off ERS turn the isolation switch to the OFF position Using the Manual Boost Button The manual boost button is designed to enable the user to provide supplementary power to the heating load should it be required To enable the manual boost push the button once an audible click can be heard and the LED will turn on indicating the manual boost has been started At this point a 90 minute timer will start counting down allowing enough time for the majority of hot water tanks to fully heat the water At the end of the timed period the manual boost will automatically stop the LED will turn off and ERS will revert to normal operation During the timed operation with the LED illuminated the timed period can be manually stopped by pressing the button once Take note that during manual boost operation ERS will supply the load with 100 power irrespective of export levels If no generation is occurring this will result in im
3. F POWERFLOW RSS FE _ POINT _ERS Pine Made in England technology Energy Recovery System Energy Recovery System E R S Mini Edition User Guide Thank you for supporting us by purchasing a PowerFlow Energy Recovery System You now own the fastest reacting most advanced export energy controller on the market today The PowerFlow E R S is a fully automated intelligent device that manages the recovery of exported energy from a solar or wind renewable generation system No user input is required for ERS operation other than the manual override should you wish to boost your heating device The main purpose of this guide is to explain how the user interface operates Please pay particular attention to the Legionella advice on the back page For your peace of mind PowerFlow E R S and F POINT technology have been independently tested in association with the University of Gloucestershire to ensure regulatory compliance Please read this user manual carefully before commencing operation Further information can be found at www powerflowenergy com PRODUCT OVERVIEW e POWERFLOW PF ERSMINI 0000000 Serial Number Device Identification Plate Mains Power OUT Connector 20 LED Power Bar Indicator A Manual Mains Boost Button Power IN Connector Current Clamp Connection SWITCHING ON OFF amp USING THE MANUAL BOOST FUNCTION Switch ON OFF During installation a 20A double pole switch with neon should be installed close
4. lways use caution when touching the enclosure after long periods of operation 2 DO NOT place objects over the enclosure PowerFlow ERS uses the metal enclosure to dissipate heat Covering the enclosure may cause product failure Please ensure adequate ventilation is provided For further information refer to the installation guide 3 DO NOT disassemble the ERS unit at any time PowerFlow ERS contains live parts inside never disassemble the system Important Legionella Advice ERS Mini should NOT be installed in all electric houses without a secondary water heat source Please speak to your installer for further information Legionella is a bacteria that can grow in water below 60 C It is common practice for hot water and heating systems to raise the water temperature on a weekly basis over 60 C in order to kill any bacteria growth Due to the very nature of ERS it is possible during periods of low energy export to partially heat the water In systems without a second heating source such as a boiler to top up the water temperature it is possible that unused warm water could remain in a temperature range where bacteria can grow Because the particulars of each installation are different PowerFlow Energy cannot take responsibility for controlling the risk of legionella It is the installer s responsibility to ensure that this risk is controlled Adequate water exchange and or additional heating must be supplied in order to raise the water
5. porting energy during the timed period During manual boost the power bar will not illuminate as per the illustration below E R S Mini OUTPUT POWER 0 3KW SUPPLY VOLTAGE 230V SOHZ MAXIMUM CURRENT 164 SINGLE PHASE OPERATION ONLY pes Lt Se MADE IN ENGLAND ARS POWE A A 4 20 LED POWER BAR INDICATOR Operation During Energy Recovery The 20 segment LED display is referred to as the power bar The power bar shows live information about changes in the amount of power being diverted to the load When no export is available and therefore no power is being diverted such as at night the power bar will not illuminate Each LED represents a step change of 5 of the heating load For example if 10 LEDs are illuminated with a heating load of 3kW this would represent 1500 watts of diversion i e 5 of 3000 watts 150 watts x 10 1500 watts The illustration below demonstrates how the power bar would appear in the above example PESTLE RE eT eT et E R S Mini OUTPUT POWER 0 gt 3KW SUPPLY VOLTAGE 230V SOHZ MAXIMUM CURRENT 16A SINGLE PHASE OPERATION ONLY if aE tS MADE IN ENGLAND 2 Operation During No Load If the ERS attempts to drive a heating load that has been switch off either manually or by a thermostat it will progressively illuminated 6 LEDs 30 in order to search for a connected load If no load is detected at this point or if the load is switch off during energy
6. recovery operation the two end LEDs will illuminate indicating that the heating load is switched off For example This would give an indication that the water has reach temperature and the immersion element has switched off The illustration below demonstrates how the display would appear in the above example m 2 a Iw ahh lh aes PETES E Se LR ET AET ene aaa i i a A i E R S Mini OUTPUT POWER 0 3KW SUPPLY VOLTAGE 230V SOHZ MAXIMUM CURRENT 164 SINGLE PHASE OPERATION ONLY Sa MADE IN ENGLAND Over Temperature ERS mini has an internal temperature sensor for safety If an over temperature situation occurs the centre 3 LEDs will illuminate and ERS will shut down for 2 minutes After this period ERS will attempted to re start automatically If the over temperature event still exists ERS will continue this 2 minute loop until the temperature is reduced to a safe operating level During this period ERS will not drive the heating load If this situation occurs ensure that ERS has adequate ventilation and has not been covered The illustration below demonstrates how the display would appear in the above example E R S Mini OUTPUT POWER 0 3KW SUPPLY VOLTAGE 230V SOHZ MAXIMUM CURRENT 164 SINGLE PHASE OPERATION ONLY ae Ss Lae a SS MADE IN ENGLAND 2 TROUBLESHOOTING amp FAQs ERS does not appear to be The immersion switch next to the hot water tank must be left in the ON position Power will onl
7. y be sent to heating the water the immersion heater when export energy is available Ensure there is enough export energy ERS will not start operation until 200 watts of export is available Ensure the water is not already hot i e heated by another source Re time the boiler to heat water in the evening rather than the morning This will give ERS opportunity during the day to heat or pre heat the water This will ensure maximum savings are achieved ERS appears to be running the Check that the current clamp has not been installed back to front The label on the clamp must be facing heating load even when there the electricity meter i e the incoming grid supply is no export Check that the current clamp has not been installed in the wrong location ERS does not switch ON Ensure both the MCB trip switch supplying the ERS and the 20A double pole isolator is in the ON position How does the manual boost Pressing BOOST ON will override ERS at any time and switch the heating device on to full A countdown function work timer of 90 minutes will start After the timed period has completed ERS will revert to normal operation Where can I find more information if my question Please visit www powerflowenergy com for more service information is not listed here IMPORTANT SAFETY INFORMATION Caution Please take note of the following 1 Risk of burns due to hot enclosure During operation the ERS enclosure may become hot to touch A
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