User Manual - Midsummer Solar PV Wholesale
Contents
1. Primary Secondary Mode 1 power sensor and 2 GEM controllers Primary takes priority Power Sensor Load Share Mode 1 power sensor and 2 GEM controllers Both controllers share PV Power AURA CLO solar electric Page 19 GEM User Manual Setting Water Temperatures GEM can use one of two methods to control the water temperature Method 1 Using the immersion heater element thermostat standard system Method 2 Using the optional GEM tank temperature sensor The desired water temperature control method is selected in the installer menu in set up screen 5 Set the Use Temp Sensor parameter to NO to use method 1 or select YES to use method 2 Using method 2 with the optional tank temperature sensor has a number of advantages over using the normal immersion heater thermostat Tank temperature display The home display screen will show a continuous reading of the current hot water temperature Better temperature control Water temperature is more accurately controlled than with the immersion thermostat Programmable temperature The hot water temperature can be programmed from the GEM unit Multiple temperatures Different temperatures can be set depending on whether the water is being heated by on site generated energy or imported energy This enables the cost of timed water heating to be minimised whilst maximising available free energy from the generation system The tank temperatures are set2. start time and output and remain on until the off time of the second overlapped time ARL CLO solar electric Page 13 GEM User Manual Legionella Control Function What is Legionella Legionellosis is the collective name given to the pneumonia like illness caused by legionella bacteria Legionnaires disease is a potentially fatal form of pneumonia and everyone is susceptible to infection However some people are at higher risk including people over 45 years of age smokers and heavy drinkers people suffering from chronic respiratory or kidney disease anyone with an impaired immune system Where does it come from Legionella bacteria are widespread in natural water systems e g rivers and ponds However the conditions are rarely right for people to catch the disease from these sources However the legionella bacteria can multiply greatly in water storage systems where the temperature remains between 20 and 45 C How do people get it People can catch legionnaires disease by inhaling small droplets of water suspended in the air containing the bacteria such as a shower How is it controlled Legionella bacteria colonies can be destroyed by raising the temperature of the stored water to 60 C for a minimum of 10 minutes For water storage systems that do not regularly operate at 60 C or above it is recommended that a weekly heating cycle to 60 C is carried out This will ensure that the water system stays free of
3. using set up screen 4 If method 1 is used for water temperature control the water temperature is controlled by the immersion heater thermostat and no temperature programming is possible using GEM AURA CLO solar electric Page 20 GEM User Manual Set up screen 4 will display the following Tmr Boost Temp C ee Temp C t emp set by heater If method 2 is used for water temperature control optional sensor installed GEM can be programmed with two water temperature settings 0 Tmr Boost Temp 50 0 C Optimiser Temp 60 C The Timer Boost Temp setting sets the required temperature when GEM is heating the water in timer or boost modes Since operation in these modes will usually be using imported power a lower temperature can be set to minimise the use of imported power The Optimiser Temp setting sets the required temperature when GEM is heating the water with free surplus PV power The make the most of surplus optimised power a higher temperature can be set for this mode Note that to reduce the risk of scalding hot water temperature should not be set higher than 65 C If the hot water feed from the tank is fitted with a blending valve a valve that mixes cold water with the hot water from the cylinder to limit the hot water output to a preset safe temperature then higher tank temperatures than 65 C could be used The advantage of a higher tank temperature is that this will enable more energy to be s
4. Documentation HP ELO IG EM Generated Energy Management System User Manual ion PP9035 V01 Contents Important Safety Information 3 Introduction 4 The GEM Control Unit 5 The GEM Power Sensor and Transmitter unit 6 The GEM Display 7 Error Message Display 9 Boost Mode 10 GEM Set up 11 Setting the Immersion Timer 13 Legionella Control Function 14 GEM Output Modes 16 GEM Unit Modes 18 Setting Water Temperatures 20 Using GEM with Other Hot Water Heating Systems 22 APL CLO solar electric Page 2 Safety Information Warranty Apollo Solar Electric Ltd has made every effort to ensure the accuracy of the content of this manual However it is possible that it may contain technical inaccuracies or typographical or other errors Apollo Solar Electric Ltd will assume no liability for any inaccuracy found in this publication nor for damages direct indirect incidental consequential or otherwise that may result from such an inaccuracy Apollo Solar Electric Limited provides this manual as is and does not issue a warranty of any kind express or implied The information provided in this manual is subject to change without notice Apollo Solar Electric Ltd reserves the right to alter product designs or specifications without notification Apollo GEM is a registered trademark of Apollo Solar Electric Ltd Important Safety Information All safety warnings give specific details of the potential danger warning present
5. advance to the next set up screen e When the last item on the last set up screen has been reached the set up display goes back to the first set up screen e Holding the SET key down at any position in a setup screen provides a shortcut jump to the next set up screen without stepping through each item e The changes will be saved and set up will automatically exit after no keys are pressed for 30 seconds Changeable Item Flashes Ti mer Optimiser Set Ti If SET taa Q Pressing the up or down buttons changes the setting Pressing the set button moves to the next item AURA CLO solar electric Page 11 GEM User Manual Set up Screens All of the GEM set up screens are shown below Optimiser Set Time mmersion Timer O 18 00 00 20 00 0 oost iser Temp 50 0 al Temp 60 C Leaionella Cvcle YES 0 65 C He sete OR eae OP 2 12 Installer Menu NO AURA CLO solar electric Screen 1 Timer and optimiser enable disable The timer and optimiser functions can be independently enabled or disabled This screen is also used to set the day and time Screen 2 Weekday timer on off programming Up to 3 on off time pairs can be programmed On off pairs do not have to be in time order To make a pair unused program the start time to 00 00 Screen 3 Weekend timer on off programming As for weekday programming Screen 4 Temperature Settings Tmr Boost sets the temp
6. and boost facility for this purpose If the water is normally heated using gas or oil the GEM system will work in conjunction with your normal water heating system On days when there is insufficient energy available from the PV system to fully heat the water your gas or oil system will top up the hot water to the required temperature Therefore the more energy that is available from the PV system on a given day the less gas oil or imported electricity will be needed to provide hot water ARL CLO solar electric Page 4 GEM User Manual The GEM Control Unit The GEM control unit is usually located near the hot water cylinder and controls the operation of the whole system The picture below shows the GEM control unit and features pee a GENERATED ENERGY MANAGER 7 www apollosolarproducts co uk APCLLO Four line status display SET BOOST Button used to switch on hot water boost or enter set up mode UP button used to select status display screens or make selections in set up mode DOWN button used to select status display screens or make selections in set up mode AURA CLO solar electric Page 5 GEM User Manual The GEM Power Sensor and Transmitter unit The Gem system senses the import and export power using a clamp on current sensor unit located near the meter or consumer unit The current sensor is connected to the GEM transmitter module which sends information about the import and export power levels by a radio l
7. and indicate how to reduce risk of injury damage and electric shock resulting from improper use of the device Carefully observe the following instructions e Installation and maintenance must be carried out by a competent person in compliance with the manufacturer s instructions the latest edition of the IEE wiring regulations and local safety regulations If in any doubt consult a qualified electrician e The device must be disconnected from the power supply before carrying out any installation work e A minimum of 50mm clearance must be provided each side of the device to allow adequate ventilation e Regulations require that the device is earthed e Do not remove the device cover while the power supply is connected e Do not operate the device with the cover removed e Do not attempt to repair or replace any part of the device e Do not touch the device with any wet part of the body e All Maintenance operations must be carried out by a qualified technician e This appliance is not suitable for outdoor use e The manufacturer accepts no responsibility for any damage or injury caused by improper use or failure to comply with these instructions AURA CLO solar electric Page 3 GEM User Manual Introduction Micro generation systems are at their most efficient when all of the generated energy is used at the point of generation i e within the household where the generator is sited This results in the minimum possible u
8. erature when in timer or boost mode Optimiser sets the temperature when using excess generated energy in optimiser mode Screen 5 Legionella Control Program settings for the legionella control cycle on outputs 1 amp 2 Screen 6 System Set up Functions These parameters would not normally be changed after system installation Refer to the GEM installation manual for more information on these settings Page 12 GEM User Manual Setting the Immersion Timer The GEM Immersion timer can be programmed to give 3 on off times per day for Monday to Friday and 3 different on off times for Saturday amp Sunday When the timer is on the water will be heated at full power regardless of whether any surplus PV power is available This allows water to be heated during off peak electricity times e g Economy7 or in the early morning before any PV power is generated Each timer on time can switch either output 1 or output 2 The timer on and off times are programmed in set up mode using set up screen 2 for Monday to Friday times and screen 3 for Saturday and Sunday times The timer programming screen is shown below Timer ON Output Times Number Timer OFF Times To make a pair unused program the start time to 00 00 NOTE It is not possible for output 1 and output 2 to be on at the same time The 3 ON OFF times should not overlap If overlapping times are programmed the timer will turn on at the first
9. et by the immersion thermostat will be used therefore this should be set to a minimum of 60 C The legionella cycle will always heat at full power until the required temperature is reached If insufficient excess power is available power will be imported to complete the cycle To minimise energy costs is it recommended that the cycle is either programmed to start during off peak tariff times if you have one or around midday when PV power is likely to be at its highest AURA CLO solar electric Page 15 GEM Installation Manual GEM Output Modes The GEM controller has two separate variable power outputs Each output is capable of driving a standard 3KW immersion heater element or other resistive heating load up to 3KW The GEM outputs can be configured to operate in one of the following modes Single Output 1 Single Output 2 Output 1 then Output 2 Priority Mode Output 2 then Output 1 Priority Mode Output 1 and Output 2 Power Share Mode Only output 1 is active during PV power optimising Only output 2 is active during PV power optimising Output 1 is used for PV power optimising until the set temperature is reached and then output 2 is used If the temperature of the heat store connected to output 1 falls below the set temperature the system reverts to using output 1 for optimising until the set temperature is reached again Output 2 is used for PV power optimising until the set temperature is reached and then
10. ich has a separate hot water system In this scenario both hot water systems could take advantage of surplus power available from the PV system The GEM is configured to operate in one of the following modes SINGLE UNIT Setting for normal single GEM controller system PRIMARY UNIT Sets the controller as the primary unit in a wireless two controller system When surplus PV power is available the primary unit will take priority over the secondary unit Surplus PV power will be available to the secondary unit if the primary load reaches maximum power without consuming all of the available surplus PV power or if the set temperature of the heat store is reached SECONDARY UNIT Sets the controller as the secondary unit in a wireless two controller system The secondary unit is able to use surplus PV power when the primary unit is already at maximum power output or no longer requires power due to the primary heat store being up to temperature LOAD SHARE In this mode both GEM controllers in the system will share any available surplus PV power between them In the event that one of the controllers reaches its maximum output power or the set temperature of the heat store is reached then all further available PV surplus power is diverted to the other unit AURA CLO solar electric Page 18 GEM User Manual GEM Unit Modes gt GEM Power Sensor Single Unit Mode 1 power sensor and 1 GEM controller GEM Power Sensor
11. imising O 0 1 Current Immersion Power Level Heater moortina F 3 KW Current Import or Export Power Typical Home Display Screen Showing diverted export power Mon 13 27 Temp 52 C Optimising ON Heater ON 1850 W Po Psu tala O O ARL CLO solar electric Page 7 GEM User Manual The GEM Display Pressing either the A or Y from the main screen will change the display to show the total export units saved and export units saved during the last 30 days This display also shows the status of the sensor radio link Total Units Saved Last 30 Sensor Units Saved in Last 30 Days Radio Signal Receive Indicator Quality 0 9 Changes approx System Function Display Once Per Second The system function messages are displayed on the 2 line of the home display The messages that could be displayed are shown below This is the normal display Optimising is on and Op timisin g ON surplus generated energy will automatically be used for water heating This indicates that the optimising has been Op timisin g OFF turned off by the user in the set up menu All surplus generated energy will be exported Optimising has been disabled by the system Op Talkies alan g DI SABLED due to the error displayed on the bottom line of the display Boost mode on output 1 has been activated by Boost 1 ON 58 mins pushing the boost button The remaining boost time is displayed f Timer mode is enabled and immers
12. ink to the GEM control unit The Current sensor and transmitter unit are shown below GEM Sensor Transmitter GEM Current Sensor Connector for GEM current sensor 2 Green IMPORT LED Flashes when power is being imported Flash speed is proportional to power being imported 3 Orange EXPORT LED Flashes when power is being exported Flash speed is proportional to power being exported 4 Sensor aperture for meter tail cable AURA CLO solar electric Page 6 GEM User Manual Once set up operation is totally automatic and no user intervention is required Whenever excess power is available from the PV system Gem will divert it into heating the hot water until the maximum programmed water temperature has been reached If insufficient excess power was available from the PV system to fully heat the water the normal hot water system will come on at its pre programmed time in order to top up the hot water to the required temperature The GEM Display Gem is provided with a 4 line illuminated LCD display to provide the user with information such as current hot water temperature export and import power levels etc Press any button in order to illuminate the display The display will stay illuminated for 30 minutes after the last button is pressed before turning off Current Hot Water Temperature if using temperature sensor Current Day amp Time The Home Display Screen Mon 13 25 Temp 51C Opt
13. ion heater 2 imeri ON is on due to timer on time programming ARL CLO solar electric Page 8 GEM User Manual Error Message Display If no errors are detected by the system the bottom line of the display will show the current power being imported to or exported from the property If the system detects an error this is displayed on the bottom line of the display instead of the import export power Importing 3 6KW No Sensor Signal Temp Sensor Fault Finding New Sensor Immersion Fault AURA CLO solar electric This is the normal display No errors are detected and the display shows how much power is being imported to or exported from the property Communication with the power sensor transmitter has been lost Check the power sensor is on and is showing a green or orange light Optimising will be disabled A faulty or unplugged temperature sensor has been detected All water heating functions will be disabled Pairing with a new sensor has been requested from the set up menu Turning the power off then back on again to the GEM transmitter located near the consumer unit should allow normal operation to resume An immersion heater fault has been detected The heater is not drawing any power The immersion thermostat might be set too low Page 9 GEM User Manual Boost Mode If it is required to boost the hot water temperature at any time using the immersion heater this can be done b
14. op up to the required temperature APL CLO solar electric Page 22 Notes APL CLO solar electric Page 23
15. output 1 is used If the temperature of the heat store connected to output 2 falls below the set temperature the system reverts to using output 2 for optimizing until the set temperature is reached again This mode will share the diverted surplus PV power during PV power optimisation equally between both heat stores connected to outputs 1 and 2 If the set temperature of either heat store is reached then all available surplus PV power is sent to the other heat store For larger applications such as swimming pool heating or hot water accumulator tanks the GEM system can also optionally operate together with up to 3 external GEM power modules to give a total output capability of 6 9 or 12KW AFA LGL O solar electric Page 16 GEM User Manual GEM Output Modes a EE ARL CLO solar electric Single Output Modes 2 Output Priority Modes 2 Output Power Share Mode Page 17 GEM User Manual GEM Unit Modes The GEM controller is connected to the power sensor by a wireless data link It is possible to configure the GEM system to use two controllers on the same wireless data network This will allow two immersion heaters or other heating loads to operate in the PV optimizing system in different parts of a property without any power or signal interconnections between them Note however that both parts of the property must be fed from the same utility meter An example would be a property with a granny annex wh
16. se of imported energy The Apollo GEM Generated Energy Management system will accurately monitor micro generation energy production together with household energy demand and then ensure that any excess energy that would have been exported is stored for later use Since every home requires hot water and hot water stores energy it makes a lot of sense to use the surplus energy to produce hot water The GEM system will capture surplus energy as it is generated which then stays stored in the form of hot water The GEM system works by accurately monitoring the power being imported or exported to the property and diverts sufficient power into the hot water system in order to keep the exported power to as near zero as possible whilst at the same time ensuring that no additional power is ever imported to supply the hot water store Priority is always given to the energy demands of the household appliances and only surplus energy that would have otherwise been exported is stored in the hot water system The Gem system uses a standard immersion heater element to deliver the excess electrical power generated by the PV system to the hot water cylinder If the water is normally heated using an electric immersion heater the same GEM element will also perform this task using imported electricity at times when insufficient power is available from the PV system but more hot water is required The GEM controller incorporates a full function immersion heater timer
17. the bacteria The Apollo GEM has a programmable built in legionella control cycle that can be used to automatically carry out this procedure each week There are two programs available one for each heater output If only one output is used or both GEM heater outputs are in the same physical cylinder only one of the programs need be used AURA CLO solar electric Page 14 GEM Installation Manual Legionella control programming is performed using screen 5 in the setup menu Legionella Cycle NO Setup screen 5 Legionella Control default is off To enable the Legionella Control cycle set Legionella Cycle to YES The program settings will now be displayed Leaqionella Cvcle YES Sat I2 12 OP 1 OP2 Sun Setup screen 5 Legionella Control Settings Each output can be programmed separately The program for output 1 is set on the line labelled OP1 and output 2 on line OP2 Press the setup button briefly to advance to each setting to be adjusted and use the A or V buttons to adjust to the required setting To disable a programme if control on only one output is needed set the time to 00 00 The program will commence at the set starting day and time and will continue to heat the water until the programmed temperature is reached When the programmed temperature is reached the cycle will terminate and normal PV optimising will resume If the GEM tank temperature sensor is not used the temperature s
18. tored in the tank Note If the GEM temperature sensor is being used to control the water temperature the immersion heater thermostat should be adjusted up to its maximum in order to prevent the immersion thermostat interfering with the GEM sensor temperature control Some standard immersion thermostats can only be adjusted up to a maximum of 60 or 65 C and therefore a higher temperature thermostat may need to be fitted AURA CLO solar electric Page 21 GEM User Manual Using GEM with Other Hot Water Heating Systems GEM will work well with the existing gas or oil heating system The more energy GEM is able to deliver to the hot water system the less energy will be needed by the normal hot water system On summer days it is possible that no energy will be used at all by the normal heating system In order to give priority to the GEM system but to ensure that sufficient hot water is always available it is recommended that the thermostat for the normal hot water system is set below that of the GEM system but high enough to give an acceptable hot water temperature e g if the GEM optimiser temperature is set for say 60 C set the normal water heating system thermostat for say 50 C In this way if the water has been fully heated by GEM the normal water heating will be Held off and if there was insufficient surplus energy available to heat the water to the normal water temperature the normal hot water system will come on and t
19. y simply pressing the boost button Pressing the boost button will turn on the boost for output 1 A second press of the boost button within 2 seconds will turn on the boost for output 2 The system function display will then change to show Boost 1 ON or Boost 2 ON and the remaining time boost will be active The first press of the boost button will give a 1 hour boost time Each subsequent press of the button while boost is on will add 1 hour to the boost time up to a maximum of 4 hours A further press of the boost button when boost is already set for 4 hours will turn off boost mode Boost mode will automatically turn off when the preset temperature is reached or the boost time reaches zero APL CLO solar electric Page 10 GEM User Manual GEM Set up Gem set up mode is used to program various operating parameters such as the time date enable or disable the optimiser or timer program the timer on off times enter the required optimiser and timer hot water temperatures etc GEM Set up mode is entered by pressing and holding the set boost Button for at least 3 seconds Upon entering set up mode the first of 5 set up screens are displayed e A setting which can be changed slowly flashes on and off e To change the setting press the UP or DOWN arrow keys Q o If SET e To move to then next setting press the SET key 20067 e When the last setting on the screen has been reached pressing the SET key will
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