- Worcester Bosch
Contents
1. List entry second level Table 1 1 2 SAFETY INSTRUCTIONS GENERAL gt Read the guide carefully and keep it to hand for future use INSTALLATION AND COMMISSIONING gt The heat pump may be installed and put into operation only by a competent person RISK OF DAMAGE DUE TO OPERATOR ERROR Operator errors can result in injury and damage to property gt Ensure that children never operate this appliance unsupervised or play with it gt Ensure that only personnel who can operate this appliance correctly have access to it SERVICE AND MAINTENANCE gt Only competent persons may carry out repairs Incorrect repairs can lead to serious risks to the user and a reduction in savings gt Only use original spare parts gt Service and maintenance must be carried out annually by a competent person 2 THE BENCHMARK SCHEME Worcester Bosch Group is a licensed member of the Benchmark Scheme which aims to improve the standards of installation and commissioning of domestic heating and hot water systems in the UK and to encourage regular servicing to optimise safety efficiency performance and to comply with the F gas regulations Please ensure that the installer has fully completed the Benchmark Checklist on the inside back pages of the installation instructions supplied with the product and that you have signed it to say that you have received a full and clear explanation of its operation The installer is legally required to c2. gt Value gt 0 C enables the function The highest temperature is used if temperature changes have been set for acertain circuit at several external inputs Other functions Factory setting No Alternative Yes No Table 34 Functions 13 8 GENERAL Among other things settings for date and time are available here gt Room sensor settings room controller gt gt Show outdoor temperature in room sensor room controller Factory setting No Alternative Yes No Table 35 Show outdoor temperature in room controller gt Set date Factory setting Format yyyy mm dd Table 36 Date gt Set time Factory setting Format hh mm ss Table 37 Time gt Check and change if necessary date and time These are used by the control unit to manage the different clock settings e g holiday and room temperature program gt Summer winter time Factory setting Automatic Alternative Manual Automatic Table 38 Summer winter time gt Select if there should be automatic change over between summer and winter time or not dates according to EU standard gt Display contrast Factory setting 70 Lowest value 0 Highest value 100 Table 39 Display contrast gt f necessary change the background light of the control panel gt Language gt Change language if desired 6 720 802 172 2012 06 SETTINGS 13 9 ALARMS The different alarms that can occur are described in Chapter 14 Under Alarms there is Info
3. 0 5 C higher room temperature gives approx 1 C higher room temperature It always takes some time for a change of a heating il setting e g an increase or decrease in room temperature to apply The same applies in the event of a quick change of the outdoor temperature This is why you should always wait for at least 24 hours before making anew change gt Party Party mode means that a running room program is stopped during the set time in order to avoid a temperature drop 6 720 802 172 2012 06 SETTINGS gt gt Number of hours Factory setting Oh Lowest value Oh Highest value 99h Table 6 Party duration gt Select the number of hours that party mode should be active for The function starts immediately on all activated circuits gt gt Circuit 1 gt gt Circuit x Factory setting No Alternative No Yes Table 7 Enable party mode gt Select Yes to enable party mode Party mode can be enabled for each installed circuit The menu is displayed only if more than one circuit is installed gt gt Deactivate party mode Factory setting No Alternative No Yes Table 8 Deactivate party mode gt Select Yes to disable party mode on all activated circuits The heat pump returns to program mode The menu is displayed only if party mode is active gt Holiday The same functions are included here as in the Holiday menu gt Chapter 13 4 gt Extra hot water duration gt For adescription
4. Reset condition The value of the sensor indicates lt 110 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 19 FAILURE ON SENSOR T2 OUTDOOR Function In the event of a failure on T2 the outdoor temperature is set to 0 C so that the heat pump can continue to produce heat The alarm is 6 720 802 172 2012 06 ALARMS activated when the sensor s value indicates a temperature lower than 50 C Reset condition The value of the sensor indicates gt 50 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 20 SHORT CIRCUIT ON SENSOR T2 OUTDOOR Function In the event of a short circuit on T2 the outdoor temperature is set to C so that the heat pump can continue to produce heat The alarm is activated when the sensor s value indicates a temperature higher than 70 C Reset condition The value of the sensor indicates lt 70 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 21 FAILURE ON SENSOR T3 HOT WATER Function The hot water production is terminated
5. mixed additional heat which is permitted to work at the same time as heat pump The additional heat is also used during alarm operation A hot water electric heater is required for production of extra hot water and hot water peak In this case the electric additional heat in the heat pump is disabled The Multi module accessory is required for mixed additional heat and hot water electric heater 13 SETTINGS 13 1 MODE BUTTON FUNCTIONS By pressing the following functions can be used directly e Room temperature normal Temperature increase decrease e Party e Holiday e Extra hot water duration the control unit gt Hold down the button for at least five seconds in the initial menu and then select language il The button can be used to change the language of gt Room temperature normal Temperature increase decrease Here temperature changes for Circuit 1 can be made Ifthis circuit is equipped with aroom temperature sensor the display shows Room temperature normal otherwise Temperature increase decrease is shown 20 0 C 10 0 C 35 0 C Factory setting Lowest value Highest value Table 4 Room temperature normal Factory setting Alternative me Table 5 Room temperature increase decrease Use this function to simply increase or decrease the heat when there are no room controllers gives approx 1 C lower room temperature gives approx 0 5 C lower room temperature gives approx
6. the room controller cannot affect the heating system any longer The alarm is activated when the sensor s value indicates a temperature higher than 70 C Reset condition The value of the sensor indicates lt 70 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 25 FAILURE ON SENSOR E2X T8 HEAT TRANSFER FLUID OUT Function Activated when the sensor s value indicates a temperature lower than 0 C Reset condition The value of the sensor indicates gt 0 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 26 SHORT CIRCUIT ON SENSOR E2X T8 HEAT TRANSFER FLUID OUT Function Activated when the sensor s value indicates a temperature higher than 110 C Reset condition The value of the sensor indicates lt 110 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 27 FAILURE ON SENSOR E2X T9 HEAT TRANSFER FLUID IN Function Activated when the sensor s value indicates a temperature lower than 0 C Reset condition The value of the sensor indicates gt 0 C Category
7. H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 28 SHORT CIRCUIT ON SENSOR E2X T9 HEAT TRANSFER FLUID IN Function Activated when the sensor s value indicates a temperature higher than 110 C Reset condition The value of the sensor indicates lt 110 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 29 FAILURE ON SENSOR E2X T10 Function Activated when the sensor s resistance value indicates a temperature lower than 20 C 22 Z WORCESTER Bosch Group Reset condition The value of the sensor indicates gt 20 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 30 SHORT CIRCUIT ON SENSOR E2X T10 Function Activated when the sensor indicates a temperature in excess of 70 C Reset requirement The sensor value displayed lt 70 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 31 FAILURE ON SENSOR E2X T11 Fu
8. Tel 0844 892 9900 Worcester Bosch Group is a brand name of Bosch Thermotechnology Ltd worcester bosch co uk 6 720 802 172 WORCESTER BOSCH GROUP TECHNICAL SUPPORT 0844 892 4010 APPOINTMENTS 0844 892 3000 SPARES 01905 752571 LITERATURE 0844 892 9800 TRAINING 01905 752526 SALES 01905 752640 ANWORCESTER Bosch Group
9. es ee 19 TAO E 22 14 9 1 23 15 Energy savings 24 16 Maintenance 24 16 1 24 16 2 Evpansionveseel ccc cece cece ee eee 24 16 3 24 17 24 1 KEY SYMBOLS AND SAFETY INSTRUCTIONS 1 1 KEYTOSYMBOLS WARNINGS Warnings in this document are identified by a warning triangle printed against a grey background Keywords at the start of a warning indicate the type and seriousness of the ensuing risk if measures to prevent the risk are not taken The following keywords are defined and can be used in this document e NOTE indicates a situation that could result in damage to property or equipment e CAUTION indicates a situation that could result in minor to medium injury e WARNING indicates a situation that could result in severe injury or death e DANGER indicates a situation that will result in severe injury or death 6 720 802 172 2012 06 WORCESTER Bosch Group IMPORTANT INFORMATION This symbol indicates important information where il there is no risk to people or property ADDITIONAL SYMBOLS gt Step in an action sequence gt Cross reference to another part of the document List entry
10. of energy coverage for the heat pump system in line with current guide lines Greenstore Combi System is a series of heat pumps that use stored solar energy in order to provide water based heating and hot water Fig 1 Stored solar energy 1 Rock heat 2 Soilheat 3 Lake heat Greenstore 6 11 Combi are heat pumps with integrated domestic hot water cylinders Greenstore 6 11 System are heat pumps designed to be supplemented with external domestic hot water cylinders Once the heat pump has been installed and started there are a number of points that should be checked regularly This may concern an alarm triggering or performing basic maintenance actions If the problem is repeated you should contact your installer 5 2 HEAT PUMP FUNCTION The heat pump consists of four main parts Evaporator Evaporates the refrigerant to gas and at the same time transfers the heat from the collector to the refrigerant circuit Condenser Condenses the gas to fluid again and transfers the heat to the heating system Expansion valve Lowers the pressure of the refrigerant Compressor Increases the pressure of the refrigerant These four main parts are linked in three circuits A refrigerant circulates in the heat pump which in some parts of the circuit is ina liquid state and in other parts in a gas state WORCESTER Bosch Group 6 720 614 540 01 21 6 720 802 172 2012 06 WORCESTER Bosch Group Fig 2 Heat pum
11. period the information transforms into a category A alarm gt Chapter 14 7 3 Reset condition The pressure goes back to the permitted level 14 9 4 LOW TEMPERATURE COLLECTOR CIRCUIT IN E2X T10 Function The information is given if the temperature of the refrigerant to the heat pump is too low If the information appears several times during a certain time period the information transforms into a category A alarm gt Chapter 14 7 5 Reset condition The temperature of the collector circuit exceeds the lowest permitted temperature 14 9 5 LOW TEMPERATURE COLLECTOR CIRCUIT OUT E2X T11 Function The information is given if the temperature of the refrigerant from the heat pump is too low If the information appears several times during a certain time period the information transforms into a category Aalarm gt Chapter 14 7 6 Reset condition The temperature of the collector circuit exceeds the lowest permitted temperature 14 9 6 HOT WATER PEAK FAILURE NEW TRY WITHIN 24 HOURS Function The hot water has not come up at the right temperature The hot water peak is repeated at the same time on the next day Reset condition The correct hot water peak temperature is reached 14 9 7 TEMPORARY HEAT PUMP STOP DUE TO WORKING AREA LIMITS Function The compressor stops until the hot gas temperature falls below the set limit The warning can occur when the heat pump works close to the lowest permitted outdoor temperature Re
12. relevant heating circuit 12 2 1 LCD ROOM CONTROLLER ACCESSORY The control unit supports up to four room controllers Fig 20 CAN BUS LCD room controller 10 Z WORCESTER Bosch Group THE DISPLAY FUNCTIONS 6 720 648 080 08 11 Fig 21 1 Outdoor temperature 2 Room temperature 3 Holiday 4 Extra hot water 5 Current circuit The display window shows the current room temperature When Show outdoor temperature in room sensor room controller is set to Yes the outdoor temperature is also shown alternating with the room temperature This is valid for all installed room controllers In the display window operating symbols can appear at the bottom right hand side The symbol for Extra hot water or Holiday is displayed when the function has been set in the heat pump The room controller display is used to indicate alarms for some alarm categories gt Table 46 The display window slowly flashes red until the alarm has been acknowledged in the heat pump control unit or been automatically reset SETTING THE ROOM TEMPERATURE WHEN A ROOM CONTROLLER HAS BEEN INSTALLED The room temperature can easily be set using the room controller gt Turn the room controller knob to set the desired room temperature for the circuit The previous set value is shown with blinking digits The display blinks during the setting and stops blinking shortly after turning of the knob has stopped The value in the co
13. room temperature gives approx 0 5 C lower room temperature gives approx 0 5 C higher room temperature gives approx 1 C higher room temperature gt Room temperature influence Factory setting 3 0 Lowest value 0 0 Highest value 10 0 Table 18 Room temperature influence gt Set how mucha 1 K C difference in room temperature should influence the set point value for the flow temperature Example at a 2 K C deviation from the set room temperature the set point value for the flow temperature is changed by 6 K C 2 K deviation factor 3 6 K gt gt gt Room temperature exception The same as when there is aroom controller see above 14 WORCESTER Bosch Group gt gt gt Copy to all heating circuits The same as when there is aroom controller see above It always takes some time for a change of a heating il setting e g an increase or decrease in room temperature to apply The same applies in the event of a quick change of the outdoor temperature This is why you should always wait for at least 24 hours before making anew change gt Circuit 2 3 Circuit 3 option Circuit 2 3 has the same settings options as Circuit 1 gt Chapter 13 2 13 2 1 SET POINT The heating circuit s set point value is the temperature of the flow that the heat pump attempts to maintain Sometimes the measured actual value fluctuates a bit upward and downward depending on changes in the o
14. up to 2 additional circuits is optional Each circuitis then fitted with a Multi module mixing valve circulation pump flow sensor and possibly aroom controller these parts are all available as optional accessories Circuits 2 through 4 cannot have a higher flow temperature than circuit 1 This means that underfloor heating on circuit 1 cannot be combined with radiators on another circuit Room temperature reduction for circuit 1 can affect other circuits in some cases 12 2 CONTROL METHODS FOR HEATING e Outdoor sensor a sensor is fitted on a north facing outside wall of the house The sensor sends signals to the control unit in the heat pump Control with an outdoor sensor means that the heat pump automatically regulates the heating in the house depending on the outdoor temperature The customer determines the temperature of the heating system in relation to the outdoor temperature by setting the heat curve on the control unit e Outdoor sensor and room controllers one room controller per circuit is possible Control with outdoor sensor supplemented with room controller s means that one or several controllers are mounted in specified areas of the property They are connected to the heat pump and provide the control unit with information about the current room temperature The signal will affect the flow temperature It is only the room where the room controller is located that can influence regulation of the temperature for the
15. 6 720 614 789 15 31 Fig 22 Radiator The figure indicates the factory setting curve for a radiator circuit At 2 5 C the flow set point is 37 4 C 30 35 T2 C 6 720 614 789 16 31 Fig 23 Floor The figure indicates the factory setting curve for an underfloor circuit At 2 5 C the flow set point is 27 2 C Setting of heat curve If the heat curve has been set too high the display will il show the message Too high heat curve setting Change the heat curve setting A heat curve is set for each circuit If the room temperature is perceived to be too high or too low in the circuit itis preferable to adjust the curve The curve can be changed in different ways The slope of the curve can be changed by offsetting the flow temperature upwards or downwards on the left hand side the value at outdoor temperature 20 C factory value 22 0 C as well as the right hand side the value at outdoor temperature 35 C factory setting 60 0 C In addition the curve can be affected by every 5th outdoor temperature degree The value at 0 C is displayed above the curve s left hand point factory value 35 7 C 12 Z WORCESTER Bosch Group 6 720 614 789 18 31 Fig 24 Settings window Heat curve radiator Change the left point gt Press the menu dial when the square is highlighted The value is then highlighted 6 720 614 78
16. 9 19 31 Fig 25 Turn the menu dial to change the value Press the dial to save or use Gi to return without saving Inthe window the square is highlighted again and any changed values are displayed after the square In addition the curve is updated according to the new value Change the right point Turn the menu dial when the square is highlighted The upper square is changed to outdoor temperature with the corresponding curve value after the colon The circle marks the relevant curve position gt Continue to turn the dial until it shows a square before the colon gt Press the dial to highlight the value 6 720 614 789 23 31 Fig 26 gt Turn the menu dial to change the value Press the dial to save or use Gi to return without saving Inthe window the square is highlighted again and any changed values are displayed after the square In addition the curve is updated according to the new value Change a specific value for example the value at an outdoor temperature of 0 C gt Turn the menu dial when the square is highlighted until C is marked gt Fig 27 gt Press the dial to highlight the value 6 720 802 172 2012 06 WORCESTER SETTINGS Bosch Group 6 720 614 789 21 31 Fig 27 Turn the menu dial to change the value 6 720 614 789 22 31 Fig 28 gt Press the dial to save or use to return without saving gt Use to leave the curve setting wi
17. ALARMS CATEGORIES I J ARE WARNINGS INFORMATION CATEGORIES K M ARE WARNINGS CATEGORY Z IS INFORMATION Stops the compressor A A X Stops additional heat Alarm lamp alarm buzzer is activated X X X Alarm delay bs 358 15 min Requires acknowledgement to restart X X X Can be restarted before acknowledgement Menu display must be acknowledged X X X Placed in the information log Table 46 Alarm categories In Temporary stop of compressor The information may recur a number of times during a certain time period if there are more during the period a category A alarm is sounded J Temporary stop of compressor The information may recur a number of times during a certain time period if there are more during the period a category A alarm is sounded M Used for board connection problems 14 6 ALARM WINDOW When an alarm warning occurs the display shows information about what has happened At the same time information is saved in the alarm log The alarm symbol is displayed in the initial menu of the control panel gt Chapter 11 3 Example of an alarm Tripped high pressure switch E21 RHP 2010 02 17 09 37 04 6 720 643 415 15 11 Fig 31 14 7 ALARM FUNCTIONS The different alarms that can occur are presented here the alarm text is indicated in the heading Most alarm texts contain a designation of the part of the heat pump that has caused the alarm Always indicate the whole alarm information when you are in contact w
18. EMITTERS Worcester Bosch Group heat pumps are fitted with weather compensation controls as standard However for a heat pump to perform to its highest energy efficiency the central heating emitter circuit should be designed so that the flow temperature is as low as possible As a guide the system should be designed using the following maximum flow temperatures e Underfloor heating 35 40 C e Radiators 45 50 C lf underfloor heating has been installed it is important to remember that the underfloor system designer should have been informed that the heat source will be from an air source heat pump It is also important to remember that radiators should have been correctly sized to work effectively with lower flow temperatures A tool to aid installers and end users to understand the relevance of building heat loss and heat emitter selection on heat pump performance has been created by the joint trade associations The Heat Emitter Guide can be downloaded from the following website www microgenerationcertification org USE 5 USE 5 1 GENERAL The Worcester Greenstore series is equipped with the latest generation low energy circulation pumps on both the cold and hot sides Low energy circulation pumps are being introduced in line with future European legislation They are designed to improve the system efficiency When purchasing the equipment the installation engineer must make energy estimate and assess the degree
19. Table 46 The display window slowly flashes red until the alarm has been acknowledged in the heat pump control unit or been automatically reset Theroom controller alarm display function isreferred to as alarm lamp in this chapter The room controller alarm lamp can be blocked 14 2 ALARM BUZZER AT ALARM At an alarm the alarm buzzer on the heat pump sounds for one second per alarm buzzer interval set At certain times of the day the alarm buzzer can be blocked or blocked altogether In the event of a warning the alarm buzzer does not sound 14 3 ACKNOWLEDGEMENT OF ALARMS Acknowledgement means that you have to press to make the alarm window disappear What happens after acknowledgement is described in the respective alarm description In most cases warnings do not have to be acknowledged The alarm window disappears by itself once the warning cause has disappeared It is however possible to acknowledge the warning 14 4 ALARM TIMER ALARM MODE In the event of an alarm that stops the compressor the control unit starts a timer at 1h If the fault does not recur additional heat may start when the timer has counted down 18 WORCESTER Bosch Group 6 720 802 172 2012 06 Z WORCESTER Bosch Group 14 5 ALARM CATEGORIES The alarms are divided into different categories depending on the type and seriousness of the fault Alarm category is displayed in the alarm window and alarm log ALARMS CATEGORIES A H ARE
20. The alarm is activated when the sensor s value indicates a temperature lower than 0 C Reset condition The value of the sensor indicates gt 0 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 22 SHORT CIRCUIT ON SENSOR T3 HOT WATER Function The hot water production is terminated The alarm is activated when the sensor s value indicates a temperature higher than 110 C Reset condition The value of the sensor indicates lt 110 C Category Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 23 FAILURE ON SENSOR E1X TT T5 ROOM Function The room temperature influence is set to 0 which means that the room controller cannot affect the heating system any longer The alarm is activated when the sensor s value indicates a temperature lower than 1 C Reset condition The value of the sensor indicates 21 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 21 ALARMS 14 7 24 SHORT CIRCUIT ON SENSOR E1X TT T5 ROOM Function The room temperature influence is setto 0 which means that
21. USER MANUAL USER INSTRUCTIONS WORCESTER GREENSTORE LECP GROUND SOURCE HEAT PUMP IN EITHER SYSTEM OR COMBI VARIANTS WORCESTER Bosch Group 6 720 802 172 2012 06 en CONTENTS CONTENTS 1 Key to symbols and safety instructions 2 1 1 Keytosymbols 2 1 2 Safety instructions 3 2 3 3 Ground source heat pump operation 3 3 1 Selection and sizing ofaheatpump 3 4 lt A 3 TEE 4 5 1 ETC E 4 5 2 Heat 4 6 Energy measurement 5 eege 6 7 1 Additional heat EEN 6 2 Hot water production 6 8 6 8 1 Panel overview 6 8 2 On Off button EE 6 8 3 Status lamp 6 8 4 Menu display EE 6 8 5 Menu button and menu dal 6 8 6 DUON EE 6 8 7 Mode button 6 8 8 WIC el te 6 9 MCNWOVEIVIEW 7 10 Menunavigation 7 10 1 Initialmenu T 10 2 Finding desired function and changing v
22. activated on acknowledgement of the warning display 6 720 802 172 2012 06 WORCESTER Bosch Group Category L Alarm lamp buzzer No Restart The warning does not close anything but is registered in the alarm log gt Check and clean the particle filter if required gt Contact your installer if the warning remains after acknowledgement 14 8 3 HIGH TEMPERATURE DIFFERENCE COLLECTOR CIRCUIT E2X Function The warning is activated when the temperature difference between collector circuit out and collector circuit in becomes too big Reset condition The warning is deactivated on acknowledgement of the warning display Category L Alarm lamp buzzer No Restart The warning does not close anything but is registered in the alarm log gt Check and clean the particle filter if required gt Contact your installer if the warning remains after acknowledgement 14 8 4 THE HEAT PUMP IS NOW WORKING IN ANTI FREEZE MODE Function Activated when the temperature in one of the circuits becomes too low Reset condition The temperature in the circuit is increased Category L Alarm lamp buzzer No Restart Automatic once the alarm cause has disappeared gt Contact your installer 14 8 5 CHECK CONNECTION TO I O BOARD X Function Depends on the board Reset condition Communication with the board is re established Category M Alarm lamp buzzer No Restart Acknowledgement is required gt Contact
23. alues T 10 3 Help information in the menu display 8 11 Information from the 9 11 1 Operating Information 9 11 2 Info use nern 9 11 3 Operating symbols 9 12 Heating general 10 12 1 Circuits for heating 10 12 2 Control methods for heating 10 12 3 Time control for heating 10 12 4 Operating 11 2 WORCESTER Bosch Group SECHINES 11 13 13 1 button functions 11 13 2 temperature 11 133 ee 15 122 EE 16 13 5 Energy measurements 16 150 ge tee rede wes 16 13 1 External u 16 139 Serena rear 17 139 EE ee es EE EE er 17 13 10 Access 18 13 11 18 14 18 14 1 Control unit and room controller alarm lamp 18 14 2 18 14 3 Acknowledgement ofalarms 18 14 4 Alarm timer alarm mode 18 14 5 19 14 6 Alarmwindow 19 14 7 Alarm functions
24. ater temperature to approx 65 C for thermal elimination of bacteria pasteurisation For the hot water temperature increase the compressor is used first the additional heat source then continues alone gt gt Day of the week Factory setting Wednesday Area None Day All Table 23 Weekday gt Set the day on which the hot water peak should take place None means that the function is disabled All means that a hot water peak takes place every day If hot water peak is deactivated comfort mode must be selected in the menu Hot water mode gt gt Interval in weeks Factory setting 1 Lowest value 1 Highest value 4 Table 24 Week interval gt Set how often a hot water peak should take place 1 means a hot water peak every week 2 means that a hot water peak takes place in all even weeks of the year i e in week 2 4 6 etc means week 3 6 9 etc Ameans week 4 8 12 etc gt gt Start time Factory setting 3 00 Lowest value 0 00 Highest value 23 00 Table 25 Start time gt Set the time of the hot water peak WARNING Risk of scalding AN At hot water temperatures greater than 60 C there isa risk of scalding Exercise caution when using hot water immediately after a hot water peak gt Hot water program Program 1 and Program 2 enables you to block hot water production during the set time gt gt Active program Always hot water Always hot water e Program 1 Pr
25. ature 7 Circuit number 6 720 643 415 01 11 6 720 802 172 2012 06 T MENU NAVIGATION gt Turn the dial to mark a desired menu bar Room temperature 6 720 643 415 02 11 Fig 7 gt Select the function by pressing the dial The first three menu functions under Hot water are displayed Hot water Extra hot water Hot water peak Hot water program 6 720 643 415 03 11 Fig 8 gt Turn the dial to see other menu lines Hot water Hot water peak Hot water program Hot water mode Economy 6 720 643 415 04 11 Fig 9 gt Press the dial to select the function Hot water Hot water mode Economy Fig 10 Turn the menu dial to change the set value 6 720 643 415 05 11 Hot water Economy Fig 11 Press the dial to save the value or use to return without changing 6 720 643 415 06 11 Hot water Hot water mode Comtort 6 720 643 415 07 11 Fig 12 Z WORCESTER Bosch Group The control unit automatically returns to the menu when the value has been saved Hot water Hot water peak Hot water program Hot water mode Comfort 6 720 643 415 08 11 Fig 13 Economy and Comfort are explained in more detail in il the chapter about hot water mode gt Chapter 13 3 10 3 HELPINFORMATION IN THE MENU DISPLAY Hot water Hot water peak Hot water program Ot water mode Economi 6 720 643 415 09 11 Fig 14 Help information 1 1 The menu level is H
26. become clogged and must be cleaned There are particle filters on both the hot and cold sides The particle filter should be cleaned as follows Switch off the heat pump with the ON OFF button Shutthe valve and screw off the sealing lid Release the locking ring which holds the sieve in the valve Use the accompanying locking ring bar gt Image 32 gt Lift the sieve out from the valve and rinse it clean with water gt Replace the sieve the locking ring and the sealing lid gt Open the valve and start the heat pump with the ON OFF button bs Lo m N co co N N co Fig 32 17 THE GUARANTEE The Greenstore Liquid to Water heat pump has a 2 year guarantee against faulty material or manufacture subject to Terms and conditions To read the full Terms and Conditions please visit us online at www worcester bosch co uk guarantee The Guarantee Registration form is available on this same page and can be completed and submitted electronically Alternatively please telephone one of our Guarantee Registration advisors on 0844 892 2552 Your statutory rights are not affected by the manufacturers guarantee 6 720 802 172 2012 06 WORCESTER Bosch Group NOTES 6 720 802 172 2012 06 25 Z WORCESTER Bosch Group NOTES 26 6 720 802 172 2012 06 WORCESTER Bosch Group NOTES 6 720 802 172 2012 06 21 Worcester Bosch Group Cotswold Way Warndon Worcester WR4 9SW
27. en turned off but with electrical power still supplied to the unit 8 4 MENU DISPLAY Use the menu display in order to View information from the heat pump View available menus e Change set values 8 5 BUTTON AND MENU DIAL Use to get from nitial menu to the menus Use the menu dial in order to Navigate the menus and get to the setting displays Turn the dial to see more menus on the same level or change a set value Press the dial to change to a lower menu level or save a change 8 6 RETURN BUTTON Use to Go back to the previous menu level Leave a setting display without changing the set value 8 7 MODE BUTTON Use to change type of operation The controller language can be changed with the il button Pressthe button in the initial menu for at least 5 s then select the required language 8 8 INFOBUTTON Use to see information from the control unit about operating mode temperature program version etc 6 720 802 172 2012 06 WORCESTER MENU OVERVIEW Bosch Group 9 MENU OVERVIEW Room temperature Hot water Extra hot water period Stop temperature Holiday Circuit 1 and Hot water Circuit 2 3 option Energy measurements Timers Active timers are shown e g Extra hot water duration External control Heat pump x External input 1 2 External input circuit 2 3 option Circuit 1 Heating Heat curve Compressor x operating t
28. enu display is displayed kinter operation Hot water demang Heat pump 1 Additional heat 2 Outdoor Hot water mode Hot water 6 720 643 415 12 11 Fig 18 6 720 802 172 2012 06 information about temperatures operating mode etc is INFORMATION FROM THE HEAT PUMP 11 3 OPERATING SYMBOLS Symbols for different functions and components for which there is a demand or which are in operation are displayed in the bottom right corner of the nitial menu 6 720 802 133 01 11 Fig 19 Operating symbols 1 Compressor 2 Alarm compressor additional heat 3 Heating 4 Electric additional heat 5 Mixed additional heat option 6 Hot water 7 Extra hot water 8 Hot water peak 9 Pool option 10 Solar option 11 Screed drying 12 External control 13 Program time control 14 Party 15 Holiday 16 Information log HEATING GENERAL 12 HEATING GENERAL 12 1 CIRCUITS FOR HEATING Circuit 1 the first circuit is included by default in the control unit and is controlled by the installed flow sensor can also be controlled with the optional room controller Circuit 2 mixed control of circuit 2 is also included by default in the control unit but needs to be supplemented with an external mixing valve circulation pump and flow sensor and also an additional room controller these parts are all available as optional accessories Circuits 3 4 mixed control of
29. er Oh Alarm mode delay ih Party Oh Operating time for heating at hot water demand 20min Hot water operating time at heating demand 30min Heatpumpxtimers gt Compressor start delay 10min Additional heat timers gt Additional heat start delay 120min gt Delay mixing valve control after additional heat start 20min Table 32 Timers 13 7 EXTERNAL CONTROL When an external input is connected the control unit performs functions which are set to Yes or is Separated from 0 Room temperature When the external input is no longer connected the control unit returns to normal mode Only installed functions are displayed gt Heat pump x gt gt External input 1 2 gt gt gt Block compressor gt gt gt Block additional heat gt gt gt Block heating at tripped underfloor temperature limiter gt gt gt Block heating gt gt gt Room temperature gt gt gt Block hot water production gt gt External input circuit 2 3 gt gt gt Block compressor gt gt gt Block additional heat gt gt gt Block heating at tripped underfloor temperature limiter gt gt gt Block heating gt gt gt Room temperature gt gt gt Block hot water production 6 720 802 172 2012 06 WORCESTER Bosch Group Room temperature Factory setting No 0 0 C Lowest value 10 0 C Highest value 35 0 C Table 33 Room temperature gt Set the room temperature that should apply in the event of enabled external control
30. for T1 are used to activate and deactivate the heat demand The following applies to Circuit 2 3 When the actual value for the mixed circuit s T1 is low in relation to the set point value more heating water is shunted into the circuit so as to maintain the set point value If the flow temperature has been below the set point value for a certain period of time there is heat demand and the compressor produces heat before there is a too significant temperature reduction indoors This happens until the flow temperature is a couple of degrees higher than 6 720 802 172 2012 06 WORCESTER Bosch Group the set point value Or because Maximum operating time for heating at hot water demand has passed Heating demand is not active during summer operation gt General gt gt Summer winter operation gt gt gt Winter operation Automatic On Automatic Off Factory setting Alternative Table 19 Summer winter operation If On is selected the heat pump is constantly in winter operation and heat and hot water are always produced Off signifies constant summer operation only hot water is produced Automatic signifies change over at the set outdoor temperature gt gt gt Outdoor temperature limit for change over Factory setting 18 C Lowest value oC Highest value 30 C Table 20 Change over temperature The menu is displayed only if Automatic has been selected in Winter operation In the event of alternation between
31. g the start and stop times as well as anormal and an programmed temperature Program 1 2 Mon Sun 5 30 22 00 Table 12 Program 1and 2 To setthe desired time of day Select Program 1 or Program 2 gt Go to menu View edit active program gt Select day by turning the menu dial Monday 6 720 643 415 13 11 Fig 29 gt Press the menu dial to mark the value to be changed Monday 6 720 643 415 14 11 Fig 30 gt Turn the menu dial until the desired setting has been selected gt Then press the menu dial gt Turn the menu dial to be able to set additional values in the same way as above gt Go back one step with gt Select Saving alternative Return without saving 1 Program 2 The set changes are saved as a selected program or not at all gt To adjust the normal temperature proceed to menu Room temperature normal To adjust the exceptional temperature proceed to menu Room temperature exception Room temperature program when there is a room controller gt gt Room temperature program gt gt gt Active program If aprogram is selected the following ifthe menu button is turned is displayed gt gt gt View edit active program gt gt gt Room temperature normal Factory setting 20 0 C Lowest value 10 0 C Highest value 35 0 Table 13 Room temperature normal Setthe desired set point for the room temperature 13 SETTINGS gt gt gt Room temperat
32. ime on off Room temperature program Circuit 2 3 option Heat curve Room temperature program General Summer winter operation Hot water peak Day of the week Interval Time Hot water program Hot water mode Generated energy Consumption electric additional heat General Room sensor settings room controller Set date Set time Summer winter time Display contrast Language Alarms Information log Delete information log Alarm log Delete alarm log Alarm indication Alarm buzzer signal Alarm indication control unit and Room sensor room controller Access level Return to factory settings Table 3 Menu overview 10 MENU NAVIGATION 10 1 INITIAL MENU Initial menu shows different temperatures time as well as current operating symbols The window displays information alternately Room temperature if room controllers exist and Flow temperature for each aa 6 720 614 789 02 11 circuit installed Fig 5 Initial menu circuit 2 is shown if installed 10 2 FINDING DESIRED FUNCTION AND CHANGING VALUES 6 IL deg Ee 206 1 Menu overview gt Page 7 shows the main functions that are reached with rend and the dial ss Lo 2 gt Press Gen 4 3 6 720 614 789 12 11 Room temperature Fig 4 Initial menu 1 Outdoor temperature 2 Current operating symbols 3 The circuit room temperature 4 Current time 5 Hot water temperature Fig 6 6 Circuit flow temper
33. ith the installer E21 refers to heat pump 1 E22 refers to heat pump 2 E11 refers to circuit 1 E12 circuit 2 E13 circuit 3 etc Txx refers to different temperature sensors 14 7 1 HIGH HOT GAS TEMPERATURE E2X T6 Function Compressor stops Activated when the temperature from the compressor becomes too high The alarm can occur in individual cases under extreme service conditions Alarm timer starts Yes Reset condition The hot gas temperature drops to the permitted temperature Category A Alarm lamp buzzer Yes 6 720 802 172 2012 06 X X X X X X X X X X X X 1 min 5s 1 1s 15 5s 5s 2 55 Os Os Restart Acknowledgement is required gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 2 TRIPPED LOW PRESSURE SWITCH E2X RLP Function Compressor stops Activated when the pressure in the refrigerant circuit of the heat pump becomes too low Alarm timer starts Yes Reset condition The pressure goes back to the permitted level Category A Alarm lamp buzzer Yes Restart Acknowledgement is required gt Check the filter and clean if required gt Chapter 16 3 Contact your installer if the alarm remains after acknowledgement 14 7 3 TRIPPED HIGH PRESSURE SWITCH E2X RHP Function Compressor stops Activated when the pressure in the refrigerant circuit becomes too high Alarm timer starts Yes Reset condition The pressure goes back to
34. l the time but the air quality in the room does not improve Instead open the windows fully for a short time ADDITIONAL ELECTRIC HEAT Different settings e g extra hot water lead to the activation of an additional electric heat source and thereby to higher energy consumption Always select a temperature setting for hot water and heating that is as low as possible 16 MAINTENANCE The heat pump requires minimal upkeep Some inspection is recommended nevertheless for the heat pump to perform as well as possible Check the following points a couple of times during the first year Subsequently they should be checked occasionally during the year Safety valves Expansion vessel plastic vessel collector circuit Particle filter 16 1 CHECKING THE SAFETY VALVES The safety valve should be checked by a qualified engineer usually as part of an annual service visit il Never close the safety valve or obstruct it s discharge pipe gt Check that the waste water hose from the safety valve is not blocked 16 2 EXPANSION VESSEL A plastic expansion vessel is connected to the heat pump collector circuit the cold side The level in the vessel must not be less than minimum level 1 3 If the fluid level is too low contact your installer 24 Z WORCESTER Bosch Group 16 3 PARTICLE FILTER The particle filter dirt filter ensures that no particles or dirt get into the heat exchangers In time the filter can
35. m dd The period starts and ends at 00 00 Both the start and end date are included in the period gt Terminate the period prematurely by indicating No in the menu Activate holiday function gt gt Room temperature gt Set the room temperature that should apply to the circuit during the period Factory setting 17 C Lowest value 10 C Highest value 30 C Table 29 Room temperature holiday gt gt Copy to all heating circuits Factory setting No Alternative Yes No Table 30 Copy circuits gt gt Block hot water production Factory setting No Alternative Yes No Table 31 Block hot water 16 WORCESTER Bosch Group gt Circuit 2 3 gt gt Activate holiday function gt gt Start date gt gt Stop date gt gt Room temperature gt Set the values in the same way as for Circuit 1 and hot water 13 5 ENERGY MEASUREMENTS Energy is measured per compressor the calculated il results are added prior to being displayed gt Generated energy This displays Generated energy in kWh divided into Heating and Hot water gt Consumption electric additional heat This displays Consumption electric additional heat in kWh divided into Heating and Hot water 13 6 TIMERS Timers are used by the control unit to count down the different time dependent functions such as Extra hot water duration At customer level the following timers can be observed only timers that are counting are displayed Extra hot wat
36. ms are designed to operate efficiently in order to meet the building heating needs and the expectations of the customer In order to achieve this the following design activities must be completed prior to installation Pre design assessment Determine the suitability of a heat pump system for the building based on the customer requirements expectations and building type Detailed design Complete building heat loss calculations and domestic hot water usage assessment Specification Select a suitable heat pump and system components based on the detailed design Calculate and communicate the predicted energy use and running costs of the system to the customer A suitable design methodology for the above is detailed in MIS3005 the Microgeneration Certification Scheme MCS heat pump installer standard Worcester Bosch Group recommended that this standard is followed for heat pump systems The standard covers the design installation and commissioning requirements to ensure that 100 of the building heat loss can be met efficiently by the heat pump system A heat pump system must be designed to this standard to be eligible for government financial incentives e g Renewable Heat Incentive RHI The Worcester Bosch Group design team offer a heat pump sizing service which is MCS compliant To request this service download and submit the form using the guidance notes from our website address www worcester bosch co uk hp 4 HEAT
37. nal heat is provided through electric additional heat The Multi module accessory is required for mixed additional heat The control unit will automatically activate the additional heat when needed 7 2 HOT WATER PRODUCTION Hot water is heated in the domestic hot water cylinder and the control unit gives priority to hot water before production of heating water according to the settings that are made The domestic hot water cylinder is fitted with a sensor that senses the temperature of the domestic hot water 8 CONTROL PANEL Settings for the control of the heat pump are made with the control unit s control panel which also provides information about current status 8 1 PANEL OVERVIEW DI 202 2 1 C Fig 3 control panel 1 On Off button 2 Mode button 3 Info button 4 Menu dial 5 Status lamp 6 Return button 7 Menu button 8 Menu display 8 2 ON OFF BUTTON Use the On Off button to turn the heat pump on and off WORCESTER Bosch Group 8 3 STATUS LAMP The heat pump is running There is an alarm that has not been acknowledged The alarm has been acknowledged but the alarm cause remains The lamp flashes slowly menu The heat pump is in stand by modell window not lit The lamp and menu display not No voltage to the control unit lit Table 2 Lamp functions The lamp lights continuously The lamp flashes rapidly 1 Stand by means that the heat pump control unit has be
38. nction Activated when the sensor s value indicates a temperature lower than 50 C Reset condition The value of the sensor indicates gt 50 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 32 SHORT CIRCUIT ON SENSOR E2X T11 Function Activated when the sensor indicates a temperature in excess of 70 C Reset requirement The sensor value displayed lt 70 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 8 WARNINGS 14 8 1 ELECTRIC ADDITIONAL HEAT SHUT DOWN DUE TO HIGH TEMPERATURE E2X T8 Function The electric heater is turned off The warning is activated in additional heat mode if the outgoing temperature of the heat transfer fluid exceeds the maximum value Reset condition The warning is deactivated when the temperature falls Category K Alarm lamp Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the warning recurs often 14 8 2 HIGH TEMPERATURE DIFFERENCE HEAT TRANSFER FLUID E2X Function The warning is activated when the temperature difference between heat transfer fluid out and heat transfer fluid in becomes too high Reset condition The warning is de
39. ndow and return to the menu Recommendations gt Increase the value of the right point if it feels too cold at low outdoor temperatures Increase the value of curve at C if it feels a little cold at outdoor temperatures around Increase or decrease the value of the curve equally at the right and left points to fine adjust the heat the curve is offset parallel gt gt Compressor x operating time on off Factory setting 20 0 Lowest value 10 0 Comfort Highest value 30 0 Economy Table 10 Compressor operating time on off gt Select how long the compressor should be on or off in heating mode Higher set values result in fewer compressor starts and stops which achieves higher economy However more pronounced temperature fluctuations in the heating system may result than with lower values gt gt Room temperature program Factory setting HP optimized Alternative HP optimized e Program 1 Program 2 Table 11 Program selection circuit 1 gt Choose if the circuit should be controlled with a program or not HP optimized This means that the control unit is only controlled by the flow set point value gt Chapter 13 2 1 without programmed changes during the day Optimised operation provides the best comfort and energy savings in the vast majority of cases 6 720 802 172 2012 06 Program 1and 2 These selections provide an opportunity to define user programs for time control by adjustin
40. nsor s value indicates a temperature lower than 0 C Reset condition The value of the sensor indicates gt 0 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 16 SHORT CIRCUIT ON SENSOR E11 T1 FLOW Function The system switches over to control based on sensor T8 The alarm is activated when the sensor s value indicates a temperature higher than 110 C Reset condition The value of the sensor indicates lt 110 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 17 FAILURE ON SENSOR E12 T1 E13 T1 FLOW Function The mixing valve for the circuit is closed completely The alarm is activated when the sensor s value indicates a temperature lower than 0 C Reset condition The value of the sensor indicates gt 0 C Category H Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 18 SHORT CIRCUIT ON SENSOR E12 T1 E13 T1 FLOW Function The mixing valve for the circuit is closed completely The alarm is activated when the sensor s value indicates a temperature higher than 110 C
41. ntrol unit menu Room temperature normal for the circuit is automatically set to the same value Alternatively the desired room temperature is set via the control unit gt Go to the menu Room temperature normal for the circuit and set the desired room temperature The room temperature value in the room controller for the circuit is automatically set to the same value For Circuit 1 there is one more way to set the room temperature gt Use to set the room temperature in Room temperature normal gt Chapter 13 1 12 3 TIME CONTROL FOR HEATING e Program control The control unit offers a possibility to define two individual programs for time control of the heating e Holiday the control unit has a program for holiday mode which means that during the selected period the room temperature changes to a lower or higher level The program also allows switching off hot water production External control the control unit can make settings for external control which means that the preselected function is performed when the control unit senses an input signal 6 720 802 172 2012 06 WORCESTER Bosch Group 12 4 OPERATING MODES e With electric additional heat the electric additional heat is permitted to work at the same time as the heat pump to meet the demand when the heat pump cannot meet it by itself Alarm mode Extra hot water and Hot water peak also activate the additional heat e With mixed additional heat option
42. of setting Extra hot water gt Chapter 13 3 Factory setting Oh Lowest value Oh Highest value A8h Table 9 Extra hot water duration After a period with blocked hot water production e g il holiday itisrecommended to enable the extra hot water function so as to eliminate bacteria and quickly reach the correct hot water temperature 13 2 ROOM TEMPERATURE Press the button in the standard display to open the main menu Select Room temperature to adjust the heating The following options are available under Room temperature e Circuit 1 Heating e Circuit 2 3 General gt Circuit 1 Heating gt gt Heat curve The heat curve constitutes the basis for the control unit s control of the temperature on the heating water to the circuit and indicates how high it needs to be in relation to the outdoor temperature The control unit increases the temperature of the heating water when the outdoor temperature drops The temperature of the heating water out to the circuit i e the flow temperature is measured by sensor T1 for circuit 1 full name E11 T1 and sensor T1 for circuit 2 fullname E12 T1 11 SETTINGS Each circuit is controlled by its own heat curve The installer sets the type of heating for each circuit that is Radiator or Underfloor The heat curve for Underfloor has lower values because the floors do not tolerate such high temperatures 30 35 T2 C
43. ogram 2 Factory setting Alternative Table 26 Hot water program 15 SETTINGS gt gt View edit active program The menu is displayed only if Program 1 or Program 2 has been selected Programs are changed in the same way as for Room temperature program gt Chapter 13 2 gt Hot water mode Factory setting Alternative Table 27 Hot water mode Economy Economy Comfort Select hot water mode Economy means that the hot water is permitted to cool slightly before hot water production starts compared to Comfort Heating stops at a slightly lower temperature gt Change to Comfort if more or hotter hot water is desired This setting must be used if electric additional heat is missing or if the hot water circulation is used when the temperature in the hot water circulation is otherwise too low The factory settings for on and off temperature are approx 8 K C lower in Economy mode compared to Comfort mode 13 4 HOLIDAY During holidays absence the heating can for example be kept at a lower or higher level and hot water production can be switched off Start and Stop date Room temperature and Block hot water production are only displayed if the holiday function is activated gt Circuit 1 and hot water gt gt Activate holiday function Factory setting No Alternative No Yes Table 28 Holiday function gt gt Start date gt gt Stop date gt Set start and stop date for the desired period Format yyyy m
44. omplete a commissioning checklist as a means of complying with the appropriate Building Regulations England and Wales All installations should be made in accordance with MCS MIS 3005 This product should be serviced regularly to optimise its safety efficiency and performance The service engineer should complete the relevant Service Record on the Benchmark Checklist after each service The Benchmark Checklist may be required in the event of any warranty work and as supporting documentation relating to home improvements in the optional documents section of the Home Information Pack 6 720 802 172 2012 06 THE BENCHMARK SCHEME 3 GROUND SOURCE HEAT PUMP OPERATION As the outside temperature gets colder the heat demand of a house increases and the output of a ground source heat pump will decrease Eventually it becomes so cold outside that the output of the heat pump alone is not able to heat the building effectively The Greestore range of ground source heat pumps therefore allows for monoenergetic and bivalent operation Monoenergetic means that in the event of very low external temperatures a 3 stage electrical booster heater in the indoor unit will automatically be activated to provide additional heat if required and keep the building warm In bivalent operation a second heating appliance e g gas or oil boiler is used to supplement the heat load 3 1 SELECTION AND SIZING OF A HEAT PUMP Itis essential that heat pump syste
45. ot water 2 Drop down list The marked row shows your position among the functions under Hot water 3 The arrow shows that there is new menu on the next level 4 The points show that the next level is a setting window 5 The function is marked 6 Three of the functions under Hot water Summer winter operation Outdoor temperature limit for change over 6 720 643 415 10 11 Fig 15 Help information 2 1 Graphic display of the value 2 Highest possible value 3 Unit 4 Previous value 5 New value Saved when the menu dial is pressed 6 Lowest possible value Hot water peak Day of the week real Fig 16 Help information 3 1 Option 4 out of 9 is displayed 6 720 802 172 2012 06 WORCESTER Bosch Group 11 INFORMATION FROM THE HEAT PUMP The heat pump provides information about temperatures operating modes possible alarms etc 11 1 OPERATING INFORMATION The nitial menu shows different temperatures and times of day Different operating symbols show the functions for which there are demand or which are in operation 317 C o 0 og gel 2 1 C ms 6 720 614 789 01 11 Fig 17 11 2 INFO BUTTON Press in the Initial menu Detailed displayed gt Turn the dial to see all the information gt Press 5 to return to the initial menu Press info in a menu display The detailed information is displayed for as long as is pressed gt eg The m
46. p description 1 Collector circuit pump 2 Evaporator 3 Compressor 4 Condenser 5 Heat pump domestic hot water cylinder 6 Floor heating 7 Radiator 8 Heat pump 9 Heat carrier pump 10 Expansion valve 11 Borehole 12 Geothermal heating coil horizontal loop compact collector The collector circuit fluid which is a mixture of water and anti freeze circulates in the borehole geothermal heating coil in a plastic hose The fluid collects stored solar energy and with the help of the collector circuit pump leads it into the heat pump and to the evaporator The temperature is then approximately 0 C In the evaporator the collector circuit fluid meets the refrigerant The refrigerantis then ina fluid state and is at approximately 10 C When the refrigerant meets the zero degree heat transfer fluid it starts to boil Vapour forms and is led into the compressor The temperature of the vapour is approximately 0 C In the compressor the pressure on the refrigerant increases and the temperature of the vapour rises to approximately 100 C The hot vapour is then forced into the compressor In the condenser the heat is transferred to the house heating system radiators and underfloor heating and the hot water system The vapour cools and liquefies The pressure in the refrigerant is still high when it is led on to the expansion valve The pressure of the refrigerant is reduced in the expansion valve The temperat
47. r The setting applies only to the control unit s alarm buzzer gt gt Alarm indication room sensor room controller gt gt gt Block alarm indicator lamp Factory setting Yes Alternative No Yes Table 43 Block indicator lamp The setting applies to all room controllers 17 ALARMS 13 10 ACCESS LEVEL Access level is Customer as standard This level gives you access to all functions that the user requires The installer also has access to the additional functions required at installation 13 11 RETURN TO FACTORY SETTINGS Select Return to factory settings and Yes to reset all customer settings to the factory settings Settings made by the installer are not affected Factory setting No Alternative Yes No Table 44 Return to factory settings 14 ALARMS 14 1 CONTROL UNIT AND ROOM CONTROLLER ALARM LAMP The status lamp on the control unit is used to show ON OFF status for the heat pump but also to show possible alarms The status lamp is therefore also called alarm lamp Blue continuously lit The heat pump is running Blue flashing rapidly There is an alarm which must be acknowledged The alarm has been acknowledged but the alarm cause remains Blue flashing The heat pump is in standby modell Table 45 Alarm lamp control unit 1 Stand by means that the heat pump is running but no heating or hot water demand exists The room controller display is used to indicate alarms for some alarm categories gt
48. rmation log e Delete information log e Alarm log Delete alarm log e Alarm indication gt Information log The information log shows information from the heat pump The information log symbol is displayed in the control panel initial menu when there is active information gt Delete information log The information log is deleted here gt Alarm log The alarm log shows the alarms and warnings that have occurred Alarm category gt Chapter 14 5 is displayed in the top left corner of the display If the alarm is active the alarm symbol Chapter 11 3 is displayed both in the alarm log and the initial menu of the control panel gt Delete alarm log The alarm log is deleted here gt Alarm indication Settings for alarm buzzer and status lamp are made here gt gt Alarm buzzer signal gt gt gt Interval Factory setting 2s Lowest value 25 Highest value 3600s 60min Table 40 Interval gt Set the length of the alarm interval The alarm buzzer sounds for one second and is silent during the rest of the interval The setting applies to all alarm buzzers gt gt gt Blocking time Factory setting Off Start time 0 00 23 45 Stop time 0 00 23 45 Table 41 Blocking time gt Set the times between which alarms buzzers should not be allowed to produce an acoustic signal gt gt Alarm indication control unit gt gt gt Block alarm buzzer Factory setting No Alternative No Yes Table 42 Block alarm buzze
49. set condition The hot gas temperature is within the range of the compressor 14 9 8 TEMPORARY HOT WATER STOP DUE TO WORKING AREA LIMITS Function Ongoing hot water operation is aborted and replaced with heating operation The warning can occur when the heat pump works close to the lowest permitted outdoor temperature Reset condition The hot gas temperature is within the range of the compressor 14 9 9 ADDITIONAL HEAT IS NOW WORKING AT ITS HIGHEST TEMPERATURE Function The additional heat begins to be stepped down The information is activated in additional heat mode if the outgoing temperature T1 or T8 approaches the set maximum value The information is blocked during hot water peaks or extra hot water Reset condition The information is deactivated when the temperature falls 14 9 10 TEMPORARY HOT WATER STOP E2X Function Ongoing DHW mode is temporarily interrupted the system changes over to heating mode Reset condition DHW temperature drops a few degrees 23 ENERGY SAVINGS 15 ENERGY SAVINGS INSPECTION AND MAINTENANCE To achieve as low energy consumption as possible for a longer period of time we recommend that you have an annual service and any maintenance carried out by a competent person UNDERFLOOR HEATING Do not set a flow temperature that is higher than the highest value recommended by the floor manufacturer AIRING Do not leave the windows ajar when you air This makes heat leave the room al
50. the permitted level Category A Alarm lamp buzzer Yes Restart Acknowledgement is required gt Contact your installer if the alarm remains after acknowledgement 14 7 4 LOW PRESSURE COLLECTOR CIRCUIT Function Compressor stops Activated when the pressure in the collector circuit becomes too low Alarm timer starts Yes Reset conditon The pressure goes back to the permitted level Category A Alarm lamp buzzer Yes Restart Acknowledgement is required 19 ALARMS Contact your installer if the alarm remains after acknowledgement 14 7 5 LOW TEMPERATURE COLLECTOR CIRCUIT IN E2X T10 Function Alarm is given if the collector circuit temperature is too low and if warning of this has been given several times Alarm timer starts Yes Reset condition The collector circuit temperature exceeds the lowest permitted temperature Category A Alarm lamp buzzer Yes Restart Acknowledgement is required Contact your installer if the alarm remains after acknowledgement 14 7 6 LOW TEMPERATURE COLLECTOR CIRCUIT OUT E2X T11 Function Alarm is given if the collector circuit temperature is too low and if warning of this has been given several times Alarm timer starts Yes Reset condition The temperature of the refrigerant exceeds the lowest permitted temperature Category A Alarm lamp buzzer Yes Restart Acknowledgement is required gt Contact your installer if the alarm remains after ackno
51. to for example a short circuit Reset condition Overheat protection reset or the temperature has fallen Category F Alarm lamp buzzer Yes Restart Acknowledgement is required gt Reset the overheat protection if this has been triggered gt Reset the automatic fuse if this has been tripped gt Contact your installer if the alarm continues after acknowledgement 14 7 13 OVERHEAT PROTECTION TRIPPED HOT WATER ELECTRIC HEATER Function The electric heater is turned off If alarm output from the electric heater has been connected to the multi module the alarm is given when an error occurs Reset condition The error in the electric heater has been overcome and no alarm signal Category F Alarm lamp buzzer Yes Restart Acknowledgement is required gt Contact your installer if the alarm remains after acknowledgement 6 720 802 172 2012 06 Z WORCESTER Bosch Group 14 7 14 FAULTY PROTECTIVE ANODE E41 F31 Function Does not affect the compressor or additional heat The alarm is activated when the anode in the hot water heater is broken or does not work Reset condition The anode should be taken care of so as to prevent corrosion in the hot water heater Category H Alarm lamp buzzer Yes Restart Acknowledgement is required gt Contact your installer 14 7 15 FAILURE ON SENSOR E11 T1 FLOW Function The system switches over to control based on sensor T8 The alarm is activated when the se
52. ure also drops to approximately 10 C When the refrigerant passes the evaporator it changes to vapour again 6 720 802 172 2012 06 ENERGY MEASUREMENT 6 720 614 540 02 31 The collector circuit is led out from the heat pump to the borehole geothermal heating coil to collect new stored solar energy The temperature of the fluid is then approximately 3 C 6 ENERGY MEASUREMENT The control unit has the ability to measure the amount of energy that is produced by the heat pump unit The calculation assumes that for example the heat pump is correctly installed and that the flow and A temperatures on the hot and cold sides are adjusted as recommended The value should therefore be regarded as an estimate of the actual emitted output The margin of error in the calculation is normally put at 5 10 In addition the energy output is affected by the outdoor temperature the settings for the thermostat and room controls and heat pump usage Ventilation indoor temperature and hot water demand can play a decisive role CONTROL UNIT 7 CONTROL UNIT The control unit controls and monitors the heating and hot water production with the heat pump and additional heat The monitoring function shuts down the heat pump in the event of a fault so as to prevent damage to critical parts of the pump 7 1 ADDITIONAL HEAT The additional heat becomes active in the event of emergency operation extra hot water and hot water peak The additio
53. ure exception Factory setting 17 0 C Lowest value 10 0 C Highest value 30 0 C Table 14 Room temperature exception gt Set the temperature that should apply as programmed temperature in the program The menu is displayed only if Program Lor Program 2has been selected gt gt gt Copy to all heating circuits Factory setting No Alternative No Yes Table 15 All circuits gt Select Yes to have the same control for all installed circuits The menu is displayed only under Circuit 1 Room temperature program when there is no room controller gt gt Room temperature program gt gt gt Active program gt gt gt View edit active program The same as when there is aroom controller see above gt gt gt Room temperature normal Factory setting 20 0 C Lowest value 10 0 C Highest value 35 0 C Table 16 Room temperature normal gt Set the measured value in the room The indicated value is used by temperature programs to calculate the difference between normal and exceptional temperature gt gt gt Temperature increase decrease Factory setting Alternative Table 17 Room temperature increase decrease gt Use this function to adjust the room temperature so that the normal room temperature see the previous menu becomes the desired temperature Use this function to simply increase or decrease the heat when there no room controllers gives approx 1 C lower
54. utdoor temperature or a large hot water demand most often the room temperature which is recalculated by the control unit into a corresponding flow temperature set point value Under normal conditions 1 K C in room temperature corresponds to approx 3 K C in flow temperature D The set point value specified by the customer installer is The set point value is normally based on Current curve value the flow temperature at the current outdoor temperature according to the applicable heat curve Current curve influence through Room sensor room controller Holiday Active program External control SET POINT VALUE CALCULATION The set point value for the heating circuit is the current curve value adjusted with active curve influence if any such exists Priority order for curve influence is External control e Active program e Holiday Only one of these can be active How big the influence should be and when to exercise it is set in the respective function FIXED SET POINT VALUE A fixed set point value not curve based applies in the event of External set point value The set point value is determined according to input signal 0 10V where 1V is 10 and 10V is 80 C OV triggers an alarm SET POINT VALUE LIMITATION The calculated set point value is always checked against the permitted temperature limits The applicable set point value T1 for Circuit 1 and the measured actual value
55. winter and summer operation and vice versa there is a certain delay aimed at preventing constant starting and stopping of the compressor when the outdoor temperature oscillates around the temperature limit 13 3 HOT WATER Under Hot water there are functions to Request Extra hot water Specify when Hot water peak should be performed to eliminate bacteria e Set any Hot water program Select operating mode gt Extra hot water Additional amount of hot water is produced by temporarily increasing the temperature of the hot water during the set number of hours to the indicated stop temperature gt gt Extra hot water duration Factory setting Oh Lowest value Oh Highest value 48h Table 21 Extra hot water duration Setthe duration of extra hot water production gt gt Extra hot water stop temperature Factory setting 65 Lowest value 50 C Highest value 65 C Table 22 Extra hot water stop temperature gt Set the stop temperature for extra hot water The heat pump starts the function directly and uses the compressor first and then the additional heat source to increase the temperature When the desired number of hours have passed the heat pump returns to normal hot water mode 6 720 802 172 2012 06 SETTINGS DANGER Risk of burn injuries AN gt Use a mixing valve when the hot water temperature exceeds 60 C gt Hot water peak Hot water peak means a temporary increase in the hot w
56. wledgement 14 7 7 TOO HIGH BOOT COUNT I O BOARD BAS X Function Compressor stops Is activated if the controller has executed more than three new starts after the alarm Check CANbus cable connection gt Chapter 14 8 6 Alarm timer starts Yes Reset condition The CAN BUS communication with the controller has been restored Category A Alarm lamp buzzer Yes Restart Acknowledgement is required gt Contact your installer if the alarm remains after acknowledgement 14 7 8 MOTOR CUT OUT 1 E2X F11 COMPRESSOR Function Activated when the compressor s motor cut out has tripped because of high current or lost current phase resulting in undue strain on the compressor Alarms may also be due to faults in the soft start Alarm timer starts Yes Reset condition Motor cut out reset Category B Alarm lamp buzzer Yes Restart Acknowledgement is required gt Check the heating system fuses and main fuses gt Contact your installer if the alarm remains after acknowledgement 14 7 9 FAILURE ON SENSOR E2X T6 HOT GAS Function The compressor stops because the hot gas cut out cannot be guaranteed Activated when the sensor s value indicates a temperature lower than 50 C Alarm timer starts Yes Reset condition The value of the sensor indicates gt 50 C Category E Alarm lamp buzzer Yes 20 Z WORCESTER Bosch Group Restart Automatic once the alarm cause has disappeared gt Contact
57. your installer 14 8 6 CHECK CANBUS CABLE CONNECTION Function Communication with the controller has been interrupted The controller executes a new start if the alarm is still active after two hours H more than three new starts have been carried out within one hour the alarm Too high boot count I O board BAS x category A gt Chapter 14 7 7 Category M Alarm lamp buzzer No Restart Acknowledgement is required gt Contact your installer if the warning recurs often 14 9 INFORMATION LOG The information log shows information from the heat pump 14 9 1 HIGH FLOW TEMPERATURE E2X T8 Function The information is given if the temperature of the heating medium is too high The information can appear temporarily when high room and hot water temperatures are set Reset condition The information is deactivated when the temperature falls to the permitted level 6 720 802 172 2012 06 ALARMS 14 9 2 TEMPORARY HEAT PUMP STOP E21 RLP Function Activated when the pressure in the refrigerant circuit of the heat pump becomes too low If the information appears several times during a certain time period the information transforms into a category A alarm gt Chapter 14 7 2 Reset condition The pressure goes back to the permitted level 14 9 3 TEMPORARY HEAT PUMP STOP E21 RHP Function Activated when the pressure in the refrigerant circuit becomes too high If the information appears several times during a certain time
58. your installer if the alarm remains active for more than three hours or recurs often 14 7 10 SHORT CIRCUIT ON SENSOR E2X T6 HOT GAS Function The compressor stops because the hot gas cut out cannot be guaranteed Activated when the sensor s resistance value indicates a temperature higher than 150 C Alarm timer starts Yes Reset condition The value of the sensor indicates lt 150 C Category E Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Contact your installer if the alarm remains active for more than three hours or recurs often 14 7 11 HIGH FLOW TEMPERATURE E1X T1 Function Compressor stops Activated when the temperature in the heating circuit becomes too high in relation to the settings that are made Alarm timer starts Yes Reset condition The sensor s value falls below the temperature for beginning of the heating demand Category E Alarm lamp buzzer Yes Restart Automatic once the alarm cause has disappeared gt Lower the heating on the circuit gt Check that the thermostat valves are open gt Contact your installer if the alarm recurs often 14 7 12 FAULTY ELECTRIC HEATER E21 E2 Function The electric heater is turned off Activated by tripped overheat protection on the electric additional heat high flow temperature or too high temperature in electric additional heat The automatic trip fuse to the electric additional heat may have been tripped due
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