Mitsubishi Electric Hydro Units Operation Manual
Contents
1. A00v e A OEZ Nr NOEZ N A 0 amp 2 N AOEZ N A OOP E AOEZ N AOOH E AOEZ N AOEZ N A OOP E A OE N A ddns uo 19 e8y 18 S00g ZH 0S A OEZ Mr ZH 0S A OEZ N ape eerie pueog ojUu0D eyep IEOUIOe ulw G OZ RTE Do G9 0 YUE MH 40 04 e9431 0 WIL ulw EZ 999 9 duet yue MHA SH 0 BW Z 9uewIo d yue 08 5 DSE tx O 08 5 GE L 0 Aypiuiny ayeja aanyesadwa uolipuoo juaiquie Bugeiado x x x x A en en vn r an r JaBueyoxe yeay Eld By LEE By Lee By zee By ZEE By OPE Du Spe By SpE Du OPE By OE Dirt Du 09 Du 09 iny 1UBIONA By SLL By SLL Diet By 6 LL By LEL Y OEL KC By LEL By LEL Du er BJ pG By pG Adwa Dau daq x UIPIM X ue wu 089 x GEG 0094 ww O9E x OES x 008 SUOISUALLIP YUN 219AO 1002 QUINOA 197M JOY IS WOP IEUIUON AINO AINO AINO AINO AINO AINO AINO AINO AINO AINO AINO AINO Bune H Buneay Bune H Buneay Dua Buneay Buneay Dua Buneay Buneay Dua Dumgeou sapoy V6INA VINA VH IWA YHZWA VS9INA V6INA V9INA WH6INA WHOSINA VINA V6INA van XO LdH3 X0ZLdH3 XOZLdH3 X0ZLdH3 O0ZLSH3 O0ZLSH3 00ZLSHA O0ZLSHA O0ZLSH3 XdH3 SH SH weu japo yun 1 pu g xoqoipAy H Customising Settings for Your Home To change the settings of your heating system please use the main controller lo E Main Controller cated on the front panel of the cylinder unit or hydrobox The following is a guide to viewing the main settings2. Should you require more information please contact lt Main controller parts gt your installer or local Mitsubishi dealer Letter Name Function A Screen Screen in which all information is displayed B Menu Access to system settings for initial set up and modifications ae MITSUBISHI ELECTRIC C Back Return to previous menu D Confirm Used to select or save Enter key A E Power Holiday If system is switched off pressing once will turn sys tem on Pressing again when system is switched on will enable Holiday Mode Holding the button down for 3 secs will turn the system off 1 F1 4 Function keys Used to scroll through menu and adjust settings Function is determined by the menu screen visible on screen A When the system is switched off or the power supply is disconnected the cylinder protection functions e g freeze stat function will NOT operate Please beware that without these safety functions in operation the cylinder E may be damaged lt Main screen icons gt B c D Icon Description 1 Legionella When this icon is displayed Legionella prevention prevention mode is active 2 Heat pump When this icon is displayed the Heat pump is in use 3 Electric heater When this icon is displayed the Electric heaters are in use 4 Target 6 Target flow tem
3. 46066 return connection 8 Automatic air vent H ee Heat pum S ressure gauge Main controller Main controller ee Plan view ei Main controller Manometer Manometer Pressure gauge 7 Pressure gauge T Geh e AS TET 5 i 8 Heat pump Space heating Space heating d i connection Space heating Space heating cee DHW ndirect DHW Indirect DHW Heat pump Indirect DHW cylinder primary ee cylinder primary cylinder cylinder primary Connection flow connection Temperature and i eeng Zoe SC Leier connection EHPT20X VM2HA ONLY i Discharge pipe f NEE ett from pressure Discharge pipe relief valve from pressure relief valve View of base View of base b s See y T Front elevation nono jewsay 1mOUUM Sieg UOISJOLUU 1 JOU OG E SUOHIPUOO 9OZZSq Jeun Deise Zy 991 S01 a0 JSNW JUBWUOIIAUS YL H Your Heating System Product Specification x x x x a x x x x x x uolo uuod rej9ue 120S Vel Vel yu ung MAE Es MAE aiqeorjdde 10N Aude ZH 0S A OEZ Mr _ ZH 0S ADEM Pei ae Jeyeoy Pett Vel KEES KEES V6 KEE Vel KEES Vel Y 9z Vel KEES eum MO Or E MO Pt MAYMIZ MAZ MAPIMAZ MAMA E M PM MAIMAE MA PHMAZ MAZ MO Or E MAYMIZ Ayoedeo ZH 0S ZH 0S ZH 0S ZH 0S ZH 0S ZH 0S ZH 0S ZH 0S ZH 0S ZH 0S ZH 0S ZH 0S Aouanbay beyon eseyd
4. General Operation 8 E Changing Initial Settings 2 0 2 0 eceeeeceeeeeeeeeeeeteeeeees 8 E Schedule 0 2 ceecceceeeceeceeeceeeeeeceeaeceeeaeccecaeeeeeeeeseeeneeeaes 9 E Holiday Mode 10 HB Heating Mode cccccccscecscesseeeseeeseeeseeseeecsseesseeesaes 10 E Domestic Hot Water DHW Legionella Prevention 11 E Service Menu 5 Service and Maintenance cccescsesereeeeres 10 E Troubleshooting E Maintenance Abbreviations and glossary Abbreviations Word Description Ambient temperature The outdoor temperature Freeze stat function Heating to prevent water pipes freezing ASHP HP Air source heat pump COP Coefficient of performance the efficiency of the heat pump Cylinder unit Indoor unvented DHW tank and component plumbing parts Hydrobox Indoor unit housing the component plumbing parts and a plate heat exchanger DeltaT Difference in temperature between two variables DHW mode Domestic hot water heating mode for showers sinks etc Flow rate Speed at which water circulates around the primary circuit Flow temperature Temperature at which water is delivered to the primary circuit FTC3 Flow temperature controller the circuit board in charge of controlling the system Compensation curve mode Space heating incorporating outdoor temperature compensation Heating mode Space heating through radiators or UFH Legionella Bacteria pote
5. MITSUBISHI ELECTRIC EUROPE B V HARMAN HOUSE 1 GEORGE STREET UXBRIDGE MIDDLESEX UB8 1QQ U K This product is made by Mitsubishi Air Conditioning System Europe Ltd NETTLEHILL Rd HOUSTOUN IND ESTATE LIVINGSTON EH54 SEO UK BH79D189H02 Printed in UNITED KINGDOM
6. if the Max operation time set by the installer is exceeded DHW mode ceases to operate e Whilst DHW mode is in operation hot water is not directed to the space heating circuit e Directly after DHW mode operation DHW mode restriction will operate The duration of this feature is set by the installer and during its operation DHW mode can not be reactivated allowing time for primary hot water flow to be di rected to the space heating circuit if necessary e After the DHW mode restriction operation the DHW mode can operate again and tank heating will continue if needed lt Eco mode gt DHW mode can run in either Normal or Eco mode Normal mode will heat the DHW tank quickly using the full power of the heat pump Eco mode takes a little longer to heat the tank but the energy used is reduced as the heat pump opera tion is restricted using signals from the FTC3 based on measured tank tempera ture Note The actual energy saved in Eco mode will vary according to outdoor temperature lt Forced DHW gt The forced DHW function is used to force the system to operate in DHW mode In normal operation the water in the DHW tank will be heated either to the set tem perature or for the maximum DHW mode time whichever occurs first However should there be a high demand for hot water the Forced DHW function can be used to prevent the system switching to space heating and continue to provide DHW tank heating Forced
7. points should be noted to achieve the most efficient and economical operation of your heating system Important points about heat pump systems Domestic hot water and legionella functions are only available on cylinder units or hydroboxes plumbed to an appropriate storage cylinder e In normal operation simultaneous DHW and space heating is unadvisable However during periods of extremely low ambient temperature the immersion heater if present can be used for DHW whilst the heat pump continues to pro vide space heating Please be aware that the immersion heater used alone is not an efficient method to heat the whole DHW tank Therefore it should only be used as a back up in normal operation s The hot water produced by the heat pump is typically at a lower temperature than a fossil fuel boiler Implications If the heat pump is being used for DHW the time at which tank heat up oc curs should be scheduled using the SCHEDULE function see page 10 Ideally this should be during the night time when little space heating is re quired and economy electricity tariffs can be taken advantage of e In most situations space heating is best performed using the room tempera ture mode This enables the heat pump to analyse current room tempera ture and react to changes in a controlled manner utilising the specialised Mitsubishi Electric controls e Using the SCHEDULE and HOLIDAY functions prevent unnecessary Space or DHW heating when the prope
8. Customising Settings for Your Home E Schedule The Schedule mode allows daily and weekly space heating and DHW patterns to be entered When setting up the system your installer should discuss with you your heating and DHW requirements so that the optimum schedule can be cre ated Activation or deactivation of the schedule is done in the option screen See option section 1 From the main settings menu use F2 and F3 to highlight the schedule icon then press CONFIRM 2 The schedule sub menu will be displayed The icons show the following modes Heating DHW 3 Use F2 and F3 buttons to move between mode icons press CONFIRM to be shown the PREVIEW screen for each mode The PREVIEW screen allows you to view the current settings Days of the week are displayed across the top of the screen Where the day appears underlined the settings are the same for all those days underlined Hours of the day and night are represented as a bar across the main part of the screen Where the bar is solid black heating DHW whichever is selected is al lowed lt Setting the schedule gt 1 In the PREVIEW menu screen press F4 button 2 First select the days of the week you wish to schedule 3 Press F2 F3 buttons to move between days and F1 to check or uncheck the box 4 When you have selected the days press CONFIRM 5 The time bar edit screen will be displayed 6 Use buttons F2 F3 to move to the point at which you do not want the selec
9. DHW mode is activated by pressing button F1 when option screen is dis played Legionella prevention mode LP mode Tank temp DHW max temp DHW max temp drop gt Time Ge DHW mode gt i DHW mode gt Tank temp DHW max temp DHW max temp drop gt Time DHW max DHW mode _operation time restriction DHW mode ai During legionella prevention mode the temperature of the stored water is increased above 60 C to inhibit legionella bacterium growth It is strongly recommended that this is done at regular intervals Please check local regulations for the recommended frequency of heat up cycles Note If failures occur on the cylinder unit the LP mode may not function normally Menu subtitle Function Range Unit Default value Hot water temp Desired temp of stored hot water 60 70 65 Frequency Time between LP mode tank heat ups 1 30 day 15 Start time Time when LP mode will begin 0 00 23 00 03 00 Max operation time Maximum time allowed for LP mode tank heat 1 5 hour 3 Duration of max temp The time period after LP mode max water temp has been reached 1 120 min 30 If you wish to make changes contact installer 11 H Customising Settings for Your Home lt Explanation of Legionella Prevention mode operation gt At the time entered by the installer Start
10. MITSUBISHI ELECTRIC CYLINDER UNIT HYDROBOX EHST20 series EHSC series EHPT20 series EHPX series OPERATION MANUAL _FORUSER For safe and correct use please read this operation manual thoroughly before operating the cylinder unit and the hydrobox BEDIENUNGSANLEITUNG F R NUTZER Lesen Sie sich zur sicheren und korrekten Verwendung diese Bedienungsanleitung bitte sorgf ltig durch be vor Sie den Speicher und die Hydraulikeinheit MODE D EMPLOI POUR LES UTILISATEURS Pour garantir une utilisation s re et appropri e lisez attentivement le pr sent mode d emploi avant d utiliser le module hydraulique combin et le module hydraulique HANDLEIDING VOOR DE GEBRUIKER Voor een veilig en juist gebruik moet u deze handleiding goed doorlezen alvorens de cilinder unit en hydrobox in gebruik te nemen MANUAL DE INSTRUCCIONES PARA EL USUARIO Para un uso correcto y seguro de la unidad cilindro y del Hydrobox lea este manual de instrucciones antes de su utilizaci n MANUALE DI FUNZIONAMENTO PERL UTENTE Per un uso corretto e sicuro del dispositivo leggere attentamente il presente manuale di funzionamento prima di utilizzare dell unit con bollitore e dell hydrobox MANUAL DE FUNCIONAMENTO PARA O UTILIZADOR Para uma utiliza o segura e correcta favor ler cuidadosamente este manual de funcionamento antes de trabalhar com o no cilindro e nos h dricos BRUGSVEJLEDNING TILBRUGER L s venligst denne
11. ange the LP mode settings E Service Menu The service menu is password protected to prevent accidental changes being made to the operation settings by unauthorised unqualified persons Tank temp Stop Le Stop temp a Legionella hot water temp Restart temp Space eating LP mode gt Time Let Duration of Max temp LP mode Legionella Prevention Mode 12 D Service and Maintenance E Troubleshooting The following table is to be used as a guide to possible problems It is not exhaustive and all problems should be investigated by the installer or another competent person Users should not attempt to repair the system themselves At no time should the system be operating with the safety devices by passed or plugged Fault symptom Possible cause Solution Cold water at taps systems with cylinder Scheduled control off period Check schedule settings and alter if necessary All hot water from tank used Ensure DHW mode is operating and wait for tank to re heat Heat pump or electric heaters not working Contact installer Water discharges from one of the relief valves The system has overheated overpressurised Switch off power to the heat pump and any immersion heaters then con tact installer Small amounts of water drip from one of the relief valves Dirt may be preventing a tight seal in th
12. ater DHW Legionella Prevention The hot water and legionella prevention menus control the operation of domestic hot water tank heat ups They are not available if your system uses the hydrobox with no cylinder When DHW screen is displayed pressing button F1 changes between Normal and Eco DHW modes Pressing button F3 activates deactivates Legionella Pre vention mode 1 Sep 2010 12 30 Legionella Menu subtitle Function Range Unit Default value DHW max temp Desired temperature of stored hot water 40 60 C 50 DHW max temperature Difference in temperature between DHW max temp and the temperature at which DHW 5 30 C 10 drop mode starts DHW max operation time Max time allowed for stored water heating DHW mode 30 120 min 60 DHW mode restriction porarily preventing further stored water heating Only when DHW max operation time has passed The time period after DHW mode when space heating has priority over DHW mode tem 30 120 min 30 If you wish to make changes contact installer lt Explanation of DHW operation gt e When the tank temperature drops from DHW max temp by more than the DHW max temperature drop set by installer DHW mode operates and the flow from the primary heating circuit is diverted to heat the water in the storage tank e When the temperature of the stored water reaches the DHW max temp set by the installer or
13. brugsvejledning grundigt inden betjening af den i cylinderenheden og hydroboksen Francais Nederlands Portugu s ANV NDARMANUAL F R ANVANDAREN F r s ker och korrekt anv ndning var god las denna anvandarmanual noggrant innan du anv nder i tanken och hydroboxen BRUKSANVISNING FORBRUKEREN Les denne bruksanvisningen n ye f r du bruker i sylinderenheten og vanntanken i bruk for a sikre trygg og riktig bruk KAYTTOOPAS K YTT J LLE Turvallisen ja asianmukaisen k yt n varmistamiseksi lue tama k ytt opas huolellisesti ennen varaajayksikk6 ja hydrobox k ytt Svenska Contents 1 Safety Precautions ccsseccccssssseeeessseeeeeseee 2 E Disposal of the Un 2 2 INTFOCUCTIONL ccccceeeseeueesesecuseeeeeeuseeeeeeeseneesenes O E Overview of the System sssesesseesesrerrernrrerererrsrrsrerne 3 E How the Heat Pump Work 3 E Economical Best Practice c cccccccesseceeseeeeseeeesees 4 HB Overview of Controls ccccccceccccessecceesseeeesseeeeseeeesees 4 3 Your Heating SyStem csssseceessseeeeesseereee D E System Configuration ccccescceceeeeeeceeeeeeseeereeseteeeeaes 5 E Important Parts of the Units Points to Note nD E Product Specification ccccecceeceecececeeeeeeseeeeeeeeeeeeaes 6 4 Customising Settings for Your Home 7 E Main Controller E
14. cal community waste collection recycling centre Annex Il Your Mitsubishi Electric heating system products have been man Contact your local Mitsubishi Electric dealer for country specific details on WE ciactured with high quality materials and components which can disposal lt Figure 1 1 gt be recycled and or reused The symbol in Figure 1 1 means that Please help us to conserve the environment we live in electrical and electronic equipment batteries and accumulators at the end of their life should be disposed of separately from your household waste H a chemical symbol is printed beneath the symbol Figure 1 1 this chemical symbol means that the battery or accumulator con tains a heavy metal at a certain concentration This is indicated as follows Hg mercury 0 0005 Cd cadmium 0 002 Pb lead 0 004 3 Introduction The purpose of this user manual is to inform users how their air source heat pump heating system works how to run the system at its most efficient and how to change settings on the main controller This appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction con cerning the use of the appliance by a person responsible for their safety Children should be supervised to ensure they do not play with the appli ance This user manual should be kept with
15. e Normal operation no action necessary After DHW operation room tem perature rises a little At the end of the DHW mode operation the 3 way valve diverts hot water away from the cylinder into space heat ing circuit This is done to prevent the cylinder unit compo nents from overheating The amount of hot water directed into the space heating circuit is dependent on the type of system and the pipe run between the plate heat exchanger and the cylinder unit Normal operation no action necessary Schedule function inhibits the system from operating but the outdoor unit operates Freeze stat function is active Normal operation no action necessary Heating mode has been on standby for a long time does not start operation smoothly Duration is set to excessively short time at Economy set ting for pump Contact installer Heating emitter is hot in the DHW mode The room temperature rises The 3 way valve may have foreign objects in it or hot wa ter may flow to the heating side due to malfunctions Contact installer lt Power failure gt All setting will be saved for 1 week with no power after 1 week Date Time ONLY will be saved E Maintenance Maintenance to the cylinder and hydrobox should be carried out annually by a competent person only Users should not try to service or replace parts of the cylinder or hyd robox themselves Failure to observe this instruction could r
16. e valve Twist the valve cap in the direction indicted until a click is heard This will release a small amount of water flushing dirt from the valve Be very care ful the water released will be hot Should the valve continue to drip contact installer as the rubber seal may be damaged and need replacing Noisy pipework Air trapped in the system Try bleeding radiators if present If the symptoms persist contact installer Loose pipework Contact installer Heating system does not get up to set temperature Prohibit schedule or holiday mode selected Check settings and change as appropriate Incorrectly sized radiators Contact installer The room in which the temperature sensor is located is at a different temperature to the rest of the house Reposition the temperature sensor to a more suitable room Battery problem wireless control only Check the battery power and replace if flat An error code appears in the main controller display The indoor or outdoor unit is reporting an abnormal condi tion Make a note of the error code number and contact installer Pump runs without reason for short time Pump jam prevention mechanism to inhibit the build up of scale Normal operation no action necessary Mechanical noise heard coming from cylinder unit Heaters switching on off Normal operation no action required 3 way valve changing position between DHW and heating mod
17. esult in injury to the user damage to the unit and the product warranty becoming invalid In addition to annual servicing it is necessary to replace or inspect some parts after a certain period of system operation Please see tables below for detailed instructions Replacement and inspection of parts should always be done by a competent person with relevant training and qualifications Parts which require regular replacement Parts which require regular inspection Parts Replace every Possible failures Parts Check every Possible failures Pressure relief valve PRV Air vent Auto Manual Drain cock Primary circuit Flexible hose Manometer Inlet control group ICG 6 years Water leakage due to copper corrosion Immersion heater Earth leakage causing circuit breaker to activate Heater is always OFF 2 years Dezincification Pump 20 000 hrs 3 years Pump failure OPTIONAL PARTS for UK 13 Parts which must NOT be reused when servicing O ring Gasket Note Always replace the gasket for pump with a new one at each regular maintenance every 20 000 hours of use or every 3 years Installers Please be sure to put your contact address telephone number on this manual before handing it to the customer sa MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Authorized representative in EU
18. if tank present to change mode press F2 Space heating operating mode to change mode press F3 Holiday mode to access Holiday screen press F4 lt Viewing system settings gt To access the main settings menu press button B MENU The following menus will be displayed DHW Cylinder unit or hydrobox plus 3rd party cylinder Heating Schedule Holiday Initial setting e Service Password protected E Changing Initial Settings 1 From main settings menu use F2 and F3 buttons to highlight Initial Settings icon and select by pressing CONFIRM 2 Use F1 and F2 buttons to scroll through the menu list When the required title is highlighted then press CONFIRM to edit 3 Use the relevant function buttons to edit each initial setting then press CON FIRM to save the setting Initial settings that can be edited are Date Time Language Temp unit Room temp display setting Contact number Time display e Selected thermistor To return to the main settings menu press the BACK button 1Sep_ 2010 12 30 jo Slik oO A 5410 E EH ee ee Home screen iT Sep 2010 12 38 saa CONN CONI rA Option screen 1 Sep 2010 12 30 Il Hot water DHW Bless Main settings menu screen Icon Description Hot water DHW Heating Schedule timer Holiday mode Initial setting Service El awe LN H
19. igerant gas is then condensed as it passes across one side of a plate heat exchanger Heat from the refrigerant gas is transferred to the cooler side water side of the heat exchanger As the temperature of the refrigerant decreases its state changes from a gas to a liquid 3 Now as a cold liquid it still has a high pressure To reduce the pressure the liq uid passes through an expansion valve The pressure drops but the refrigerant remains a cold liquid 4 The final stage of the cycle is when the refrigerant passes into the evaporator and evaporates It is at this point when some of the free heat energy in the out side air is absorbed by the refrigerant It is only the refrigerant that passes through this cycle the water is heated as it travels through the plate heat exchanger The heat energy from the refrigerant passes through the plate heat exchanger to the cooler water which increases in temperature This heated water enters the primary circuit and is circulated and used to serve the space heating system and indirectly heat the contents of the DHW cylinder if present Si Introduction l E Economical Best Practice Air source heat pumps can provide both hot water providing a suitable cylinder is used and space heating all year The system is different to a conventional fossil fuel heating and hot water system The efficiency of a heat pump is shown by its coefficient of performance as explained in the introduction The following
20. it accordingly By monitoring not only the outdoor ambient but the room and heating circuit water temperatures the heating is more consistent and sudden spikes in required heat output are reduced This results in a lower overall flow temperature being required H Your Heating System E System Configuration Packaged model system Split model system Model name EHPT20X EHST20C CH Plate heat exchanger Plate heat exchanger Cylinder unit ee Indoor cylinder unit Interconnecting Indoor cylinder unit water PIPES refrigerant pipes Outdoor heat pump unit Outdoor heat pump unit Model name EHPX EHSC Plate heat exchanger Plate heat exchanger Hydrobox Interconnecting Indoor hydrobox Interconnecting Indoor hydrobox water pipes refrigerant pipes Outdoor heat pump unit Outdoor heat pump unit e A i i Cold water inlet connection E Important Parts of the Units Points to Note EES nit St i eg DHW outlet connection Solar ancillary heat source connection lt Hydrobox gt Space heating flow connection EHSC Split model system EHPX Package model system R JE Pressure relief valve Space heatin
21. ithout emergency valves and thermostatic cut outs being operational If in doubt contact your installer Do not stand on or lean on unit Do not place objects on top or below the unit and observe service space requirements when placing objects next to the unit e Do not touch the unit or controller with wet hands as electric shock may result e Do not remove the panels of the unit or try to force objects inside the unit s casing Do not touch protruding pipework as it may be very hot and cause burns to the body Should the unit start vibrating or making abnormal noises stop operation isolate from the power supply and contact the installer e Should the unit start to produce any burning smells stop operation isolate from the power supply and contact the installer Should water be visibly being discharged through the tundish stop operation isolate from the power supply and contact the installer e The Mitsubishi Electric cylinder and hydroboxes are NOT intended for use by children or infirm persons without supervision Care should be taken to prevent children and pets having easy access to the units e Inthe case of a refrigeration leak stop the operation of the unit thoroughly ventilate the room and contact the installer e If power supply cable is damaged it must be replaced by the manufacturer its service agent or similarly qualified persons in order to avoid a hazard Do not place containers with liquids in on top of the
22. ntially found in plumbing showers and water tanks that may cause Legionnaires disease LP mode Legionella prevention mode a function on systems with tanks to prevent the growth of legionella bacterium Packaged model Plate heat exchanger in the outdoor heat pump unit Refrigerant Acompound used within the heat cycle that goes through a phase change from gas to liquid Split model Plate heat exchanger in the indoor unit TRV Thermostatic radiator valve a valve on the entrance or exit of the radiator panel controlling the heat output UFH Under floor heating a system of water carrying pipes under the floor that warms the floor surface i Safety Precautions gt Before operating this unit it is important to read the safety precautions gt The following safety points are provided to prevent injury to yourself and damage to the unit please adhere to them Used in this manual WARNING CAUTION Precautions listed under this title should be observed to prevent Precautions listed under this title should be observed to prevent injury or death to the user damage to the unit Follow the instructions provided in this manual and local regulations when using this unit A WARNING e The unit should NOT be installed or serviced by the user If installed incorrectly water leakage electric shock and fire may result e NEVER block discharges from emergency valves e Do not operate the unit w
23. perature temperature 8 Target room temperature BS Compensation curve 5 OPTION Pressing the function button below this icon will dis play the option screen 6 Increase desired temperature T Decrease desired temperature 8 Information Pressing the function button below this icon displays the information screen 4 S SE neating Heating mode 10 DHW mode Normal or ECO mode 11 Holiday mode When this icon is displayed Holiday mode activated 12 Timer S Prohibited DI Stand by D Stop D Operating H Customising Settings for Your Home E General Operation In general operation the screen displayed on the main controller will be as in the figure on the right This screen shows the target temperature space heating mode DHW mode if cylinder is present in system any additional heat sources being used holiday mode and the date and time You should use the function buttons to access more information When this screen is displayed pressing F1 will display the current status whilst pressing F4 will transfer the user to the option menu screen lt Option screen gt This screen shows the main operating modes of the system Use the function buttons to switch between Operating Prohibited and Timer for DHW and space heating or edit activate the holiday setting The option screen allows quick setting of the following Forced DHW if tank present to activate press F1 DHW operating mode
24. rty is known to be unoccupied for instance during the working day Due to lower flow temperatures heat pump heating systems should be used with large surface area radiators or under floor heating This will provide a steady heat to the room whilst improving efficiency and so lowering running costs of the system as the heat pump does not have to produce water at very high flow temperatures E Overview of Controls Built into the cylinder unit and hydrobox is the Flow Temperature Controller3 FTC3 This device controls the function of both the outdoor heat pump unit and the indoor cylinder or hydrobox The advanced technology means that by us ing an FTC3 controlled heat pump you can not only make savings compared to traditional fossil fuel type heating systems but also compared to many other heat pumps on the market As explained in the earlier section How the Heat Pump Works heat pumps are most efficient when providing low flow temperature water The FTC3 advanced technology enables the room temperature to be kept at the desired level whilst utilising the lowest possible flow temperature from the heat pump In room temp Auto adaptation mode the controller uses temperature sensors around the heating system to monitor space and flow temperatures This data is regularly updated and compared to previous data by the controller to predict changes in room temperature and adjust the temperature of water flowing to the space heating circu
25. rve heating and DHW all at reduced flow temperatures to save energy if the occupier is absent Holiday mode can be activated in 2 ways Both methods will result in the holiday mode activation screen being shown Option 1 From the main menu screen press button E should be pressed Be careful not to hold down button E for too long as this will turn off the controller and system Option 2 From the main menu screen press button F4 the current settings screen will be displayed Press button F4 again to access the holiday mode activation screen Once the holiday mode activation screen is displayed you can activate deactivate and select the duration that you would like holiday mode to run for Press button F1 to activate or deactivate holiday mode Use buttons F2 F3 and F4 to input the date which you would like holiday mode to activate or deactivate holiday mode for space heating lt Editing holiday mode gt Should you require the Holiday mode settings e g the flow temp room temp to be altered you should contact your installer E Heating Mode The heating menu deal with space heating using normally either a radiator or under floor heating system depending on the installation There are 3 heating modes Room temp Auto adaptation ct Flow temp i Compensation curve By lt Room temp Auto adaptation mode gt This mode is explained in detail in Overview of Controls Section lt Flow temp mode gt The temperat
26. ted mode to be active press CONFIRM to start 7 Use F3 button to set the required time of inactivity the press CONFIRM 8 You can add up to 4 periods of inactivity within a 24 hour interval 9 Press F4 to save settings When scheduling heating button F1 changes the scheduled variable between time and temperature This enables a lower temperature to be set for a number of hours e g a lower temperature may be required at night when the occupants are sleeping Notes The schedule for space heating and DHW are set in the same way How ever for DHW only time can be used as scheduling variable e A small rubbish bin character is also displayed choosing this icon will de lete the last unsaved action It is necessary to use the SAVE function F4 button to save settings CON FIRM does NOT act as SAVE for this menu Fy ep 2010 30 Heating Mo aa Juuru ER E D HEATING 1 Sep 2010 12 30 D TUE WED THU FRI SAT SUN IW NM Wi NM Wl Min EW HEATING ep 2010 30 7 FEA TING Seo 2018 Leo a _O 2 45AM gt 12 00AM HEATING 1 Sep 2010 12 30 Z 6 00PM wi ven hg oe e EN en Wd V H Customising Settings for Your Home E Holiday Mode Holiday mode can be used to keep the system running at lower flow temperatures and thus reduced power usage whilst the property is unoccupied Holiday mode can run either flow temp room temp heating compensation cu
27. the unit or in an accessible place for future reference E Overview of the System The Mitsubishi Electric Air to Water ATW heat pump system consists of the fol lowing components outdoor heat pump unit and indoor cylinder unit or hydrobox incorporating main controller Schematic of package cylinder system E How the Heat Pump Works Space heating and DHW Heat pumps take electric energy and low grade heat energy from the outdoor air to heat refrigerant which in turn heats water for domestic use and space heating The efficiency of a heat pump is known as the Coefficient of Performance or COP this is the ratio of heat delivered to power consumed The operation of a heat pump is similar to a refrigerator in reverse This process is known as the vapour compression cycle and the following is a more detailed explanation Low temperature renewable heat energy taken from the environment Electrical power input Useful energy output San 2 Condenser Plate heat exchanger 3 Expansion valve 1 Compressor Lanv 4 Evaporator Outdoor unit air heat exchanger The first phase begins with the refrigerant being cold and low pressure 1 The refrigerant within the circuit is compressed as it passes through the com pressor It becomes a hot highly pressurised gas The temperature also rises typically to 60 C 2 The hot refr
28. time useful heat from the system is diverted to heat the water in the storage tank When the temperature of the stored water exceeds the Hot Water temp set by the installer above 65 C water is no longer diverted to the tank Whilst legionella prevention mode is in operation hot water is not directed to the space heating circuit Directly after LP mode operation Duration of max temp will operate The du ration of this feature is set by the installer and during its operation stored water temperature will be monitored H stored water temperature should drop to LP restart temp LP mode will re start and water flow from the plate heat exchanger will be directed to the tank to boost the temperature Once the set time for duration of max temp has passed LP mode will finish and not recur for the set interval set by installer e It is the responsibility of the installer to ensure the settings for legionella pre vention are compliant with local and national guidelines Important Please note that LP mode uses electric heaters if present to supplement the en ergy input of the heat pump Heating water for long periods of time is not efficient and will increase running costs The installer should give careful consideration to the necessity of legionella prevention treatment whilst not wasting energy by heating the stored water for excessive time periods End users should seek ad vice from their installers if they wish to ch
29. unit If they leak or spill the unit may be damaged and fire could occur e When installing or relocating or servicing the cylinder unit and the hydrobox use only the specified refrigerant R410A to charge the refrigerant lines Do not mix it with any other refrigerant and do not allow air to remain in the lines If air is mixed with the refrigerant then it can be the cause of abnormal high pressure in the refrigerant line and may result in an explosion and other hazards The use of any refrigerant other than that specified for the system will cause mechanical failure or system malfunction or unit breakdown In the worst case this could lead to a serious impediment to securing product safety A CAUTION Do not use sharp objects to press the buttons of the main controller as this will cause damage to the buttons If power to unit is to be turned off for a long time the water should be drained e Do not place a container etc filled with water on the top panel E Disposal of the Unit This symbol mark is for EU countries only In the European Union there are separate collection systems for used electrical This symbol mark is according to the directive 2002 96 EC and electronic products batteries and accumulators Article 10 Information for users and Annex IV and or to the Please dispose of this equipment batteries and accumulators correctly at your lo directive 2006 66 EC Article 20 Information for end users and
30. ure of the water flowing to the heating circuit is set by the installer to best suit the space heating system design and user s desired requirements lt Explanation of compensation curve mode gt During late spring and summer usually the demand for space heating is reduced To prevent the heat pump from producing excessive flow temperatures for the primary circuit the compensation curve mode can be used to maximise efficiency and reduce running costs The compensation curve is used to restrict the flow temperature of the primary space heating circuit dependent on the outdoor temperature The FTC3 uses information from both an outdoor temperature sensor and a temperature sensor on the primary circuit supply to ensure the heat pump is not producing excessive flow temperatures if the weather conditions do not require it Your installer will set the parameters of the graph depending on local conditions and type of space heating used in your home It should not be necessary for you to alter these settings If however you find that over a reasonable operating pe riod the space heating is not heating or is overheating your home please contact your installer so they can check your system for any problems and update these settings if necessary E 1 Sen 2010 12 30 O 1 Sep 2010 12 30 A Sc 60 40 20 Sloe 25 15 H 1020 3580 10 H Customising Settings for Your Home E Domestic Hot W
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