Yutaki-M UK Specific Installation Manual
Contents
1. Drainage must be made available from the slab for rainwater runoff and heat pump condensate Condensate is fresh water without contaminants but may be very cold and subject to freezing during cold weather Such run off must be directed away from walk ways and shall ideally be to gravel surrounding the concrete base to aid natural drainage Page 14 of 61 The heat pump should be fitted with anti vibration mounts After levelling the heat pump on the base the mountings must be secured to the heat pump and the ground to prevent accidental tipping of the machine Additional protection must be provided between the rear of the machine and the nearest wall to further safeguard against accidental tipping due to unforeseen loads being applied to the top or rear of the machine Where rigid fixings are used anti vibration elements must be provided between the bracket and the wall Further mounting options and detailed dimensions of the heat pump feet are given on page 14 of the service manual Optional parts are available to assist operation in positions exposed to wind and snow Details of these parts are given in the service manual on pages 16 to 20 Page 15 of 61 Hydraulic installation Where the heat pump is not delivered with an internal buffer loading pump fitted the pump and adaptor accessories must be obtained Please check options when ordering The buffer loading pump flow direction varies on2. Consumer Unit olelelelelelelelele Pa Se a ST ololelelelelejlelele IP65 Isolator 10A Fused ASC Yutaki Outputs from system controller Configuration 1 0 Heating circulation pump Optional local control 230 Volts Heat pump on off 230 Volts Heat pump 0 20mA control Extra low voltage Extra Low voltage Heat pump communications signal Extra Low voltage Page 31 of 61 Configuration 1 0 Heat pump with control valves DHW with Legionella control immersion heater and heating buffer tank No additional heat sources Reciever Yutaki DHW Sensor Mains Supply 2 port valve Yutaki Immersion 2 port valve overheat X8 Al C3 O N Cc Vv WY L a HITACHI Overheat cutout for G3 Yutaki RE N EN 1 0 System Configuration essential settings Description S Conf sd Conf System Configuration 1 2 P301 DHW type 2 pump N B 2 port valves are treated as pumps for the 03 gt 03 purpose of this configuration P310 DHW Electric heater type 1 Enable heater P309 DHW Anti legionella protection System Configuration other settings EN DHW loading times P302 P317 DHW set point s and parameters P001 P002 04 gt 00 gt 00 01 P003 Summer switch off 04 gt 00 gt 02 Inputs to system controller Configuration 1 0 System supply temperature sensor DHW temperature sensor Page 32 of 61 L K aif AN Me o menu 03
3. Configuration 4 1 Heating valve Boiler on off 230 Volts Danger power supplied from external source Isolate elsewhere Al Heat pump 0 20mA control Extra low voltage Extra Low voltage Heat pump communications signal Extra Low voltage Page 53 of 61 Commissioning procedure Do Not apply power to the heat pump or controller 1 Complete checklist at the end of this document 2 Remove Heat pump Connections C3 X8 and A1 from the controller 3 Apply power to the controller and set parameters Initial setting for the heat pump RHUE 3 6 A V HN HM units as follows Enter Service mode using code 6565 Press to scroll through the menu items Go down to 04 Parameters Press OK to select the menu item enter sub menu Go down to 04 04 Heat pump Press OK to select the menu item enter sub menu Change the parameters as follows P603 55 C P604 55 C P606 55 C After changing the parameters return to the main screen by pressing the Esc button 4 Using the Installer code 3636 enter Installer menu and set check all system parameters for the chosen configuration 5 From menu 8 select each system output in turn and set then reset to ensure expected operation of each device connected E G Select menu 8 Outputs Press set to get to menu 08 gt 00 HC1 pump Press set to enable change of output state Press or amp to change state Press set to engage new state C
4. Isolate elsewhere Heat pump 0 20mA control Extra low voltage Extra Low voltage Heat pump communications signal Extra Low voltage Page 51 of 61 Configuration 4 1 Heat pump with boiler mixer support 2 heating circuits and DHW Reciever Yutaki DHW Sensor Flow Sensor J eles a HITACHI Pass 3636 Yutaki Boiler ES Sie Yutaki ES SES IS Ko X5 X6 2 port valve fiis fs Boiler Mixer es i Mains Supply ie of 2 port valve overheat Heei C2 Al C3 X8 a gt To Heating i X d Configuration 4 1 System Configuration essential settings Description Menu System Configuration 4 1 DHW type 2 pump System Configuration other settings __ DHW loading times DHW set point s and parameters POO1 P002 Frost protection parameters 04 gt 00 gt 00 01 POO3 Summer switch off 04 gt 00 gt 02 P701 P716 Boiler parameters 04 gt 05 gt 00 15 P008 Boiler manual release on heat pump fault 03 gt 05 Inputs to system controller Configuration 4 1 U1 System supply temperature sensor Extra Low voltage Heating circuit 1 supply temperature Extra Low voltage DHW temperature sensor Extra Low voltage Boiler temperature sensor Page 52 of 61 Consumer Unit oJolejelelelelelele Pa a S a olojeleleleleleleie Boiler 3A Fused IP65 Isolator EJ Q P 10A Fused ASC Yutaki Outputs from system controller
5. X8 Al C3 Configuration 2 1 System Configuration essential settings Parameter Description Mer System Configuration other settings DHWloadingtimes oS y YOA Inputs to system controller Configuration 2 1 System supply temperature sensor Extra Low voltage DHW temperature sensor Extra Low voltage Page 40 of 61 Consumer Unit olelelelelelelelele SMe PER a ololelelelelelelele 20A DP n 20A DP Contactors IP65 Isolator I 10A Fused Outputs from system controller Configuration 2 1 3 stage electric heater relay control 230 Volts NOTE Do NOT connect the electric heater to the controller without an intermediate relay See example below 704 Contactor Butter tank electric heater Contactor Heating DHW 3 port valve 230 Volts Heat pump on off 230 Volts PTO for remaining connections Page 41 of 61 DHW Immersion heater relay control 230 Volts NOTE Do NOT connect the immersion heater to the controller without an intermediate relay See below DANGER System External power Controller source to X9 Isolate elsewhere Contactor Immersion Heat pump 0 20mA control Extra low voltage Extra Low voltage Heat pump communications signal Extra Low voltage Page 42 of 61 This page is intentionally left blank Page 43 of 61 Configuration 2 2 Heat pump with hydraulic separator pumped DHW with Legionella control immersion heate
6. ccessscccscssscecssscecesestscecssteecescstsescesssee DOT esse sees se Re SE RA ER Re AR Re ee EE Customer SIS MQCC SS n ee oe Ge an ee Le ee Ee OR ge GE Page 59 of 61 Service Record Date Engineer name Company name Contact telephone Engineer Engineer comments comments signature signature Customer Customer Date Company name fo Contact telephone Engineer Engineer comments comments Fa NEE signature signature Customer Customer signature signature Date Date Engineername Company name fo Engineer signature Customer signature Engineer Engineer comments comments Engineer signature C Customer signature Service Record Date Engineer Engineer comments comments signature signature Customer Customer Engineer name Engineername Company name Companyname Contact telephone Contact telephone Engineer Engineer comments comments Fa NEE signature signature Customer Customer signature signature Date Date Engineername Company name fo Engineer signature Customer signature Engineer Engineer comments comments Engineer signature EN Customer signature
7. 1 2 System supply temperature sensor Extra Low voltage DHW temperature sensor Extra Low voltage Page 34 of 61 Consumer Unit 10 0 0 0 0 0 0 0 0 0 Da olololelelelelelole zi 20A DP Switch o 0 Oo 32A Isolator 9 do il g Relay 13A DP Switch ASC o D Ca Yutaki Outputs from system controller Configuration 1 2 Heating circuit 1 circulation pump Heating circuit 2 circulation pump Heating circuit 2 mixing valve 3 port valve Heat pump on off DHW Immersion heater relay control 230 Volts NOTE Do NOT connect the immersion heater to the controller without an intermediate relay See below DANGER System External power Controller source to X9 Isolate elsewhere Contactor Immersion Heat pump 0 20mA control Extra low voltage Extra Low voltage Heat pump communications signal Extra Low voltage Page 35 of 61 Configuration 2 0 Heat pump with heating buffer valve control DHW with Legionella control immersion heater and Electric heating backup DHW Sensor Flow Sensor a gt U Q oc I Pass 3636 Yutaki Overheat cutout for es HITACHI Immersion Yutaki Mains Supply 2 port valve Booster Heater Configuration 2 0 System Configuration essential settings Parameter Description Me OO foiWiesdngtmes TR Inputs to system controller Configuration 2 0 U1 o System supply temperature sensor Extra Low voltage US o D
8. Receiver e Remote RF room unit with batteries e Manuals Brief technical reference information about the hardware connections and operation of the ASC are given in the reference manual accompanying this document Detailed Installation and usage instructions for the ASC and room unit are provided in the manuals enclosed in the ASC pack A simple user guide for the operation of the Room Unit is provided at the end of this manual Page 18 of 61 Electrical installation General The installation of electrical systems comprise a Power distribution b Power control c Monitoring and communication All of the above elements must be considered at the planning stage in order for the installation to be efficient and effective The Power distribution elements are there to make sure that power is available from the mains power source or consumer unit and is available in a safe and protected manner to all aspects of the system All installations must comply with BS7671 The requirements of BS7671 always take priority over any information implied or given in this document The Advanced System Controller distributes both power and control functionality to the system pumps valves etc and provides mains power control to the cylinder immersion relay Some control functions between the heat pump and controller operate at mains voltage and hence it also falls within the power control category The monitoring and communication wires are mainly
9. different models It is essential that water flow is in the correct direction Extreme care must be taken when fitting the pump accessory to ensure correct pump operation Where the buffer loading pump is not fitted inside the heat pump it may be fitted elsewhere but as close to the heat pump as is reasonably practicable The heat pump must be fitted with two flexible hoses which must be connected directly to the heat pump in order to prevent vibrations from the unit affecting adjacent buildings and internal pipe work Heated water flows from the heat pump water outlet and returns from the system to the heat pump water inlet These connections are at the rear of the machine as shown below late dete N B Water outlet is heating flow Water inlet is heating return NOTE Failure to observe correct connection of flow and return pipe work will prevent correct system operation and may result in damage to the heat pump The strainer must be fitted immediately after the flexible hose from the water inlet to prevent ingress of particles to the heat pump heat exchanger The strainer must be securely fixed on both sides with brackets on solid pipe work Positioning of the strainer must be such that easy access for regular inspection and cleaning of the filter element can take place Full bore isolation valves must be fitted in both the flow and return pipe work in order to facilitate strainer removal with minimal
10. extra low voltage and as such must be run separately from the power and power control wiring Electrical power is generally required for the following system elements 1 Heat pump 2 Advanced System Controller ASC 3 Cylinder immersion heater 4 Cylinder immersion relay 5 Additional heat sources and associated relays as required e g boiler electric heater etc The wireless room unit is powered by batteries and does not require a mains power supply Each element should have a separate power system with suitable fuse protection All system elements shall be powered from the same phase and where split load consumer units are used and full isolation of Neutrals cannot be guaranteed All systems shall be powered from the same side of the consumer unit Where 3 phase units are installed L1 shall be used for all control functions Page 19 of 61 The following table shows the power rating for each heat pump model 253 207 253 207 253 207 253 207 CRHUE SAHN HM 3N 400VS0H2 440 360 T RHUEGAHN HM 3N 400VSOH2 440 360 The cylinder immersion heater is rated at 3kW A 13A fused outlet should be provided for this item All control circuits are relatively low power with the greatest of these being the circulation pumps These pumps may be powered from the system controller providing each accessory is rated at less than 3A and that the total load on the system controller does not exceed 10 Amps Page 20 of 61 Example Power D
11. if no buffer tank is fitted HC2 Sensor HC1 Sensor U8 U6 U5 U4 U2 U1 HITACHI Pass 3636 ir X o A2 A3 230v X 5 6 X7 X8 230v Xi X2 3 X4 i HHA HHA HAHA HEA H Mains Supply HC1 Pump HC1 Mixer HC2 Pump HC2 Mixer Open flow radiator circuit uncontrolled based on system flow temperature only 2 circuit both mixed essential settings Parameter Deseripton Meg System Configuration other settings Inputs to system controller Heating circuit 2 flow sensor Outputs from system controller Heating circuit 1 circulation pump alternatively powered from local heating 230 Volts system see text X2 X3 Heating circuit 1 mixing valve 230 Volts X1 X4 Heating circuit 2 circulation pump alternatively powered from local heating 230 Volts system see text X5 X6 Heating circuit 2 mixing valve 230 Volts Page 29 of 61 Configuration H Heat pump for heat only No additional heat sources Reciever Yutaki Flow Sensor HITACHI Pass 3636 C2 I l C men z O N N C s WY X Ti je amp X8 Al C3 Configuration H System Configuration essential settings Description Menu System Configuration 1 2 System Configuration other settings P001 P002 04 gt 00 gt 00 01 P003 Summer switch off 04 gt 00 gt 02 Inputs to system controller Configuration 1 0 System supply temperature sensor Extra Low voltage Page 30 of 61
12. loss of system water A combined isolation valve and strainer is available from HACE as an accessory Page 16 of 61 Flexible Hoses Full Bore Isolation Valves Strainer Flow Gauge All external pipe work valves and fittings must be properly fixed soundly insulated and weather proof Identification of flow and return pipe work and accessibility of strainer and isolation valves is essential for ease of maintenance All pipe work from the heat pump to the system components Hydraulic separator DHW cylinder Buffer tank etc must be 28mm copper in order to minimise pressure drop and maintain system efficiency under worst case operating conditions All remaining pipe work shall be selected and sized according to system design considerations as set out in this document local requirements and regulations in force at the time of installation Sensors must make a mechanically sound and thermally efficient connection to pipe work and sensor pockets Use of thermal transfer e g heat sink compound mechanical fixings and aluminium tape are recommended surrounded by good quality thermal insulation Page 17 of 61 Advanced System Controller ASC pack The Heat Pump is supplied with an Advanced System Controller pack This comprises the following components e Advanced system Controller ASC e Terminal packs 1 white power 1 black control and communications e Wire routing bar e Safety covers x 2 e Temperature sensors x 2 e RF
13. to customer at handover Registration for Renewable Heat Incentive RHI or other benefits that may be eligible if applicable Registration of system with the Micro generation Certification Scheme MCS Servicing Recommend annual servicing to check for debris in strainer and ensure heat pump airways are clear Replace batteries in room unit Always check system parameters have not been altered and check alarm history for anomalies Page 4 of 61 Quick start system configuration selection Existing Boiler Installation Heat Pump To Meet Full Demand Additional Heat Source Boiler Enough Open Flow For Defrost Electric Conf 1 0 y Power Supply Lons 1 y Sufficient con TA Y Enough Open Flow pi For Defrost Conf 4 1 il Gas Cont 2 0 or 72 1 Y Conf 2 2 Con 32 m HC1 pump power must be derived from ASC X1 All heating circuits pumps may be powered locally providing buffer capacity is sufficient for defrost Page 5 of 61 Introduction Where correctly installed and maintained the Yutaki heat pump will provide adequate heating and hot water all year round It is important that the correct system configuration docking option has been chosen by the system designer to ensure that comfort is maintained for the customer under typical outdoor temperatures and hot water usage conditions relevant to the geographical area and household demands The p
14. 04 o 04 gt 03 gt 07 04 gt 03 gt 00 16 Extra Low voltage Extra Low voltage Consumer Unit olelelelelelelelele Dips EIER 20A DP Switch 32A Isolator L D Ee OR o Mm o EI Yutaki Outputs from system controller Configuration 1 0 Heating circulation pump 230 Volts DHW valve 230 Volts Heat pump on off 230 Volts DHW Immersion heater relay control 230 Volts NOTE Do NOT connect the immersion heater to the controller without an intermediate relay See below DANGER System External power Controller source to X9 Isolate elsewhere Contactor Immersion Heat pump 0 20mA control Extra low voltage 1 C2 Extra Low voltage Heat pump communications signal Extra Low voltage Page 33 of 61 Configuration 1 2 Heat pump with hydraulic separator pumped DHW with Legionella control immersion heater No additional heat sources N B X1 must be used for Heating circulation with a suitable open flow volume and flow rate with this configuration DHW Sensor Flow Sensor Overheat cutout for G3 Reciever Yutaki U4 U2 UI Ls HITACHI ai S OS DA i i i il il N ri a 2 3 5 8 gf a C2 T 2 X8 A1 C3 f U1 To Heating Configuration 1 2 System Configuration essential settings Parameter Description Mer P301 System Configuration other settings E ne Inputs to system controller Configuration
15. HW temperature sensor Extra Low voltage Page 36 of 61 Consumer Unit olelelelelelelelele SMe PET 1 ololelelelelelelele 20A DP n 20A DP Contactors IP65 Isolator I 10A Fused Outputs from system controller Configuration 2 0 Heating circuit 2 port valve 3 stage electric heater relay control 230 Volts NOTE Do NOT connect the buffer immersion heater to the controller without an intermediate relay See example below 704 Contactor Butter tank electric heater Contactor DHW 2 port valve 230 Volts Heat pump on off 230 Volts PTO for remaining connections Page 37 of 61 DHW Immersion heater relay control 230 Volts NOTE Do NOT connect the immersion heater to the controller without an intermediate relay See below DANGER System External power Controller source to X9 Isolate elsewhere Contactor Immersion Heat pump 0 20mA control Extra low voltage Extra Low voltage Heat pump communications signal Extra Low voltage Page 38 of 61 This page is intentionally left blank Page 39 of 61 Configuration 2 1 Heat pump with 3 port mixer valve heating via buffer DHW with Legionella control immersion heater and Electric heating backup O N o WY LL HITACHI Reciever DHW Sensor Yutaki Yutaki Yutaki ge Mains Supply 3 port valve Immersion Booster Heater ME p N E
16. Heat Pump At the time of writing planning permission is not generally required for air source heat pumps in the United Kingdom However planning considerations and calculations must be carried out in accordance with MCS 020 which can be found on the following web site http www microgenerationcertification org mcs standards installer standards Note The Yutaki heat pump has been approved under the Micro generation Certification Scheme MICS The installer of the equipment must also be accredited under MCS for the appropriate technology and the installation must meet the requirements of MCS in order to be eligible for any benefit under the Renewable Heat Incentive RHI scheme Electricity supply authorities may need to be informed prior to installation of current using equipment Always check with your local distribution company before planning the installation Page 7 of 61 List of Accessories The following accessories are available from Hitachi in order to assist the installer in meeting design requirements Installers may choose to source their own parts at their discretion In order to ensure equipment warranties are preserved it is important that installers satisfy themselves that such parts will allow the system perform within specified parameters Drawing symbol Notes Wilo ERP Additional Approved buffer accessories are loading pump reduired in order to fit the this pump inside the Heat Pump casing as hydraulic fitting
17. Hitachi Air Conditioning Europe SAS UK Branch i ITACHI Whitebrook Park Lower Cookham Road Maidenhead Berkshire SL6 8YA Inspire the Next V1 2 15 Uf iN i lt Installation reference manual SEZ Hitachi Yutaki Heat pump EE EET EE 3 Model Numbers RHUE 3AVHN1 RHUE 3 6 A V HN HM General This manual is provided by Hitachi Air Conditioning Europe HACE for reference use by qualified installers of the Yutaki range of heat pumps Qualified installers will have attended the Hitachi recognised training course before installing any Hitachi product Non attendance of such a course ina recognised Hitachi training centre may void the warranty on any products supplied This manual does not replace the service manual which is referred to within these pages This manual provides guidance only as to the key elements of the design and installation of heat pumps and heating system design docking options referred to on the front cover of this manual This manual refers to the Yutaki M series heat pump service manual SMGBOO9O rev 0 01 2014 No part of this publication may be reproduced copied filed or transmitted in any shape or form without the express permission of HACE All regulations for water usage energy efficiency electrical safety and others as applicable to the installation in force at the time of the installation must be adhered to and all such regulations shall take precedence over any advice and i
18. and minimise the likelihood of breakdown between system servicing Page 12 of 61 Transportation The heat pump must be transported in its original packaging in an upright position only If lifted by hoist or crane observe the following precautions 0 7 to 1 0m Wire rope Do not remove the plastic band or the corrugate paper frame Pass the wire ropes through each lifting hole in the wooden base as shown e Use suitable wire lifting ropes only e Protect the unit against abrasion from the lifting ropes e Lift smoothly e When handling manually ensure adequate personal are involved to prevent damage or injury e Do not remove wooden base from unit until final installation e Always lift using suitable slings e The Centre of gravity of single fan units is 440mm from base of heat pump e The Centre of gravity of twin fan units is around 550mm from base of heat pump e See the service manual Page 12 for greater detail of weight distribution Installation space Sufficient space shall be provided around the heat pump to allow fresh clean air to be drawn from the rear of the unit through the fan s and expelled safely from the front Cold air expressed from the front of the unit must not be allowed to re circulate to the rear of the unit Access must be made available from the sides and above the unit for maintenance purposes A minimum space of 200mm must be left between rear of the heat pump and the nearest wall Ideall
19. ators etc Heat pump 1 0 1 1 1 2 2 0 2 1 2 2 3 0 3 1 3 2 4 1 Other describe configuration reference delete as appropriate Additional heat source Capacity Kw PTO Page 57 of 61 Commissioning Certificate Page 2 of 3 Installation Checklist Heat pump fixed on solid surface Away from sleeping areas and neighbouring property Away from influences of strong wind Away from possible snow build up Away from dripping water sources Ambient temperature sensor away from direct sunlight Minimum distance of 500mm from rear wall Maintenance access from all sides and above Free passage of air around heat pump Positioned where cold air from unit shall not cause a nuisance Anti vibration mountings fitted Anti tipping fixings on base fittings Anti tipping fixings fitted from top of machine to nearby supporting structure Safe drainage of condensate away from walkways Flexible pipe work from heat pump to building Insulation of external pipe work Physical protection of electrical wiring Electrical separation of power and control wiring Ingress protection of installed electrical wiring and external switches to IP65 or better Flow and return pipes identified Full bore heat pump isolation valves fitted Strainer correctly fitted on heating return pipe work suitably fixed and accessible for regular maintenance Potential air trap points have automatic air vents fitted G3 components fitted where required Expansion vessels charge set Vessel 1 type Ve
20. circulation pumps can also be controlled directly by the ASC Where buffer loading is achieved through a 2 port valve and HC1 is required to provide heating circulation the circulation pump should be powered from a separate supply via the valve contacts in order to prevent over loading of the ASC output Where possible except when a Hydraulic separator is used HC1 circulation should be derived from local heating controls It is important to ensure however that buffer loading is timed to take place when there is likely to be a heating demand from any part of the system Page 25 of 61 The diagrams connections and settings set out on the following pages provide examples of heating system layouts and relevant connections to the Advanced System Controller This information is provided for guidance only Detailed system design must always be carried out in order to ensure correct system operation Heating circuit examples 1 ASC X1 or local control see text above R Z CE Em Auto Single circuit unmixed essential settings Parameter Description Mer System Configuration other settings P104 HC1 Room compensation settings 04 gt 01 gt 02 P105 P106 HC1 minimum and maximum supply set points 04 gt 01 gt 03 04 Inputs to system controller U1 System supply temperature sensor Extra Low voltage May be on supply to Buffer or in buffer see configuration options for detail Outputs from system controller Heating circ
21. d from external source Isolate elsewhere Heat pump 0 20mA control Extra low voltage RF Receiver Extra Low voltage Heat pump communications signal Extra Low voltage Page 49 of 61 Configuration 3 2 Heat pump with boiler support and DHW Overheat cutout for G3 Reciever Yutaki DHW Sensor Flow Sensor Pass 3636 1 1 1 1 1 1 1 1 1 1 gt lt Ke 3 port valve Yutaki Boiler Yutaki 55 JF Mains Supply X8 A1 C3 EE EE EE E To Heating Configuration 3 2 System Configuration essential settings Parameter Description Mee Conf System Configuration 3 2 Reset menu P301 DHW type 2 pump 03 03 System Configuration other settings DHW loading times P302 P317 DHW set point s and parameters 04 gt 03 gt 00 16 P001 P002 Frost protection parameters P003 Summer switch off P701 P716 Boiler operating parameters 01 0 Inputs to system controller Configuration 3 2 System supply temperature sensor Extra Low voltage DHW temperature sensor Extra Low voltage Page 50 of 61 Consumer Unit ejejejejejejejejejo DORR ei he 2 Sa IS olelelelejejelejele Boiler CO 3A Fused IP65 Isolator 5 o o 10A Fused ASC Yutaki Outputs from system controller Configuration 3 2 DHW valve 230 Volts Heat pump on off 230 Volts Boiler on off 230 Volts Danger power supplied from external source
22. d the reduction of temperature of the system water during the defrost operation Model Water tempera RHUE 3AVHN1 RHUE 3A V HN1 HM RHUE 4AVHN1 HM RHUE 5A V HN1 HM RHUE 6A V HN1 HM ture drop SC 232 are N Ba N AO gese a0 77 71 92 114 137 Note The values shown above are based on theoretical installation conditions Values can vary for different hydraulic circuit configurations Installers should recalculate these values for the real conditions of their installation Page 6 of 61 Domestic Hot Water DHW is normally maintained at around 50 C in the hot water cylinder thus preventing the growth of harmful bacteria even in normal use However protection against the growth of legionella bacteria is provided by periodically raising the water temperature in the DHW cylinder The heat pump provides a variable power output depending on the heating and hot water load The power output variation is achieved by a variation of speed of the compressor and fan systems within the heat pump The control of the heat pump power is maintained at optimum efficiency and effectiveness by the Advanced System Controller ASC Heating and hot water load is determined automatically by the use of sensors which monitor the outside air temperature indoor temperature and water system temperatures Full heat loss calculations in accordance with BS EN 12831 must be carried out by the system designer in order to accurately determine the size of the required
23. eated water for the heating system to draw on at any time The water in the buffer tank will be heated to a temperature that is set by the operating parameters of the system and is dependent on the outside temperature the desired comfort level within the building and the selected heat curve within the controller It is important that the end user understands that the temperature of the buffer set by the above parameters may limit the flow temperatures within the heating system irrespective of local control settings at radiator or under floor heating zone control level Systems that do not include a buffer tank are reliant on the rapid delivery of heated water from the heat pump and any backup heat sources in order to meet heating demand Page 11 of 61 Domestic hot water heating is prioritised over space heating by the controller during the 2 periods that are set in the system controller This priority may be periodically disabled by the use of the Tariff Timer input on the system controller in order to prevent excessive reductions in heating capacity if the hot water temperatures cannot be achieved by the heat pump during the normal hot water generation cycle Diversion of water to heating or hot water generation is facilitated by the system controller and carried out by the use of pumps and or valves Where possible it is recommended that pumps only are used in order to maintain system reliability and in order to maximise operating efficiency
24. erformance of Micro generation heat pump systems is impossible to predict with certainty due to the variability of the climate and its subsequent effect on both heat supply and demand HACE endeavors to provide the best available information at all times but is given as guidance only and should not be considered as a guarantee The system designs outlined in this manual include provision for heating only Configuration H heating and hot water generation using the Heat Pump alone Configuration 1 0 and 1 2 the Heat Pump with electric backup Configuration 2 0 2 1 and 2 2 and the Heat Pump with boiler backup configuration 3 2 and 4 1 There is also an option to include Domestic Hot water only from the boiler and heating from heat pump with boiler support configuration 3 1 The defrost cycle uses heat from water in the heating system The designs outlined assume that there will be sufficient system water volume and flow available at all times for the Heat Pump to defrost The defrost cycle will normally take water from the buffer tank but where this is not sufficient or no buffer tank is fitted there must be sufficient water volume with no restrictions of the heating water flow by closed zone valves underfloor heating actuators or thermostatic radiator valves If in doubt please contact HACE Technical Support for further advice The table shown below provides theoretical information about the available volume of system water for defrosting an
25. heck that HC1 pump is now running Press set to enable change of output state Press Y or amp to change state Press set to engage new state Check that HC1 pump is now stopped Repeat process for all connected accessories Page 54 of 61 Select Menu 08 gt 12 and set to 1 which will clear all manual relay settings Press ESC and make sure that hand icon se is not displayed Remove power to ASC Re connect heat pump connections C3 X8 and A1 Power heat pump Power ASC Check alarm status on controller and take corrective action if any alarms persist Ensure system is calling for heat and hot water Monitor flow rate for heating hot water and defrost functions Systematically check all system elements for correct operation Hand over all documentation to customer Complete system commissioning documents and return to Hitachi Page 55 of 61 Hitachi Yutaki Nominal flow rate requirements Based on a delta T of 5 degrees C Ensure the flow meter setting is correct before finalising commissioning RHUE 3 RHUE 3 RHUE 4 RHUE 5 RHUE 6 RHUE 5 RHUE 6 AVHN1 AVHN HM AVHN HM AVHN HM AVHN HM AHN HM AHN HM 22 m 20 l m 27 m 34 m 40 m 34 I m 40 m Page 56 of 61 Commissioning Certificate Page 1 of 3 Buffer tank Hydraulic separator location Cylinder location Pipe size type from heat pump to cylinder and buffer Heating system Ground Other state detail description e g ufh radi
26. here is no suitable buffer tank the associated control function for at least one open flow heating circulation pump must be derived from the Advanced System Controller normally X1 This may be a direct connection via a relay or via a contact on the associated 2 port valve as applicable Page 21 of 61 Heat Pump Electrical Connections Do not pass cables through the ventilation hole at the rear of the Heat Pump D Ventilation hole An access plate is provided at the front of the Heat Pump to allow power and control cables to enter the machine If the case of the Heat Pump is drilled to allow for conduit entry ensure that adequate protection is made to prevent damage to internal parts Ensure that suitable cable entries are used to prevent corrosion of the machine covers and prevention of water ingress to the Heat Pump Page 22 of 61 Connections from the Heat Pump to the buffer loading pump and Advanced System Controller are shown below Power supply J DOGO DIOIGIOCCIOIO ooo NIERE TT i d OO aes SSS OH Buffer Loading Pump X8 Run Stop ELB BEE ooo RHUE 3AVHNT and RHUEV 3 6 AVHN HM RHUE 5 6 AHN HM 0 20mA 27 OO 28 Communications HITACHI N B Accessory ATW HPA O1 is Heat pump Connections as follows reguired if not already fitted in order to enable communication link Power between Heat Pump and Controller TB1 Live Neutral a
27. istribution minimum system configuration N B this does not show control wiring between units or more complex system designs which may include additional heat sources and hence require additional isolation and protection devices Consumer Unit Heating system supply 1 x mier ENE see below rararirirt DERE olololelelelejelele TURENE EE 20A DP Switch 32A Isolator LE ze 13A DP Switch ASC mg EET o a Yutaki EE All low power ancillaries such as pumps valves etc derive power either from the heat pump in the case of the buffer loading pump and the system controller in the case of all other equipment All ancillaries with a power consumption of greater than 3A or that would otherwise require a total power derivation from the system controller of greater than 10A MUST be powered by an isolating relay or contactor Heating System Electrical Connections Electrical wiring for heat distribution systems is outside the scope of this manual It is generally assumed that all heating control and power systems will be entirely separate from the Heat Pump electrical system and as such additional circuits will be required Local control of individual elements of the heating system should reduce energy consumption by preventing the running of heating circulation pumps when zones are up to temperature Where it is essential for the System Controller to ensure circulation for defrost functions etc where t
28. nce of the heat pump primary loading circuit It is physically very small in comparison to a buffer tank The down side of a hydraulic separator is that it has very little water volume and so the volumes of water required in order to satisfactorily achieve good heat pump performance without cycling and adequate defrost performance will require a relatively large volume of open flow heating system water uncontrolled by valves etc Further the primary heating circuit pump needs to be controlled by the Advanced System Controller which may lead to the heating water circulation being operational when the property heat load is otherwise satisfied The no load function of the controller mitigates this to a certain degree but this is not always satisfactory A suitably sized buffer tank resolves these problems but will of course require allocation of appropriate installation space Ideally the system will be considered as 2 separate entities 1 The Heat Pump and associated controls which will heat the buffer tank with some unrestricted heating area in order to allow the Advanced System Controller room unit to feed back room temperature and hence properly regulate buffer water temperature 2 The heating system which will only run circulation pumps for heating zones requiring heat based on local thermostat settings Control of flow temperatures in low temperature heating circuits can still be affected by the ASC and if required up to 2 heating
29. nd CPC Earth connections to locally switched supply Communications See Inset Photo TB1 Terminal 1 to System controller C3 port Terminal 27 extra low voltage TB1 Terminal 2 to system controller C3 port Terminal 28 extra low voltage Caution These terminals are adjacent to the main incoming power supply Buffer loading water circulation pump TB2 Terminal 17 to pump Live TB2 Terminal 18 to pump Neutral Earth Terminal to pump Earth PTO Page 23 of 61 Heat pump Connections cont d Heat Pump On Off remote switching TB2 Terminal 6 to System controller X8 terminal 1 230V TB2 Terminal 6 to System controller X8 terminal 2 230V Heat Pump remote temperature control TB2 Terminal 19 to System controller A1 terminal 1 extra low voltage TB2 Terminal 20 to System controller A1 terminal 2 extra low voltage Note Mains voltage and extra low voltage cables must be run separately Page 24 of 61 Heating System hydraulics The Heat Pump may with careful design be connected to a heating system directly without the use of a buffer tank or hydraulic separator However such a connection is outside the scope of this manual Before considering such an installation technical advice must be sought from HACE The hydraulic separator also known as a low loss header is a useful device which enables balancing of different heating devices and heating circuits which may have their own pumps whilst minimising the effect on the performa
30. nference given herein Page 2 of 61 Contents Page QUICKStatt aie EG Ee GE EE EG We Oe Ee ee Ge EG 4 Configuration selection guide assensu nnen a a aaa 5 HTOdUCtION si NE N DE OENE 6 HSCOTACCESSONES ER TE EE 8 Key installation considerations iese ee ER ee EE ee RR EE ee Ee AR ee ee ee 11 Ttarispoitatiomof heat Pump REED ER GE A OAS 13 Heat Pump hydraulic installation considerations esse esse ee ee ee ee ee ee 16 Advanced System Controller pack sees ese EE ee ER ee EE ee ARE EE ee ee see ee 18 Eleetticalimstallati fi n Ee EE EG RE DR Ee EE Ge 19 Heating system hydraolics EE Ee EP EG ED Ed 25 Heating circuit examples sesse see see EE ee RE EE ee Ee ee ee EE ee ee ee ee RE ee ee EE 26 Conneuraton E MEE OE IE GE RD ER RD Gee Ge GO A GE ED 30 Copil uration HO he EE ER GE EE EE EG Ge ee ee EG 32 COMMCUEALON 2 AE E a A 34 COMMISUFATION 20 EED EE EG EE GE Ge 38 COMMCUFATIONZ ie R EA SE Ee Ri Se ED 42 COMMCUEAUONZ 2 EER OER N De Ge EG Eed 46 COMMSUFATIONS lt 1 SEE EE ER ED Ge Ge seca De re 48 COMMCUGALIONS 2 arona a oe eo ee Ge Ee n 50 Eofitieuratiofdd Se EE DE DS ee ie Dee GE Ee 52 Commissionineg pioeedure Eer ER Ee Ge Ee Ee 55 COMMISSIONING certificate sesse esse RR RE ee RR EE ee RE ee ee Ee AA EE ee Ee ee ee 58 SERVICE TOCONG sk OE RE N ED EG 60 Page 3 of 61 Quick Start Select which type of system you wish to install See flowchart overleaf Determine where the various system components should be installed Moun
31. r and electric heating backup Reciever Yutaki DHW Sensor Flow Sensor HITACHI Yutaki Yutaki l I l l A O O a TE aA amp EA wn T e g aE E ie ES X8 Al C3 Auto Bypass Configuration 2 2 System Configuration essential settings Parameter Description der System Configuration other settings pL DHWloadingtimes TOR Inputs to system controller Configuration 2 2 System supply temperature sensor Extra Low voltage DHW temperature sensor Extra Low voltage Page 44 of 61 Consumer Unit olslelelelslelefels a ale a ed olelelelelelele 20A DP n 20A DP Contactors IP65 Isolator 10A Fused ASC Yutaki Outputs from system controller Configuration 2 2 Heating circuit 2 port valve 230 Volts X2 X3 Heating circuit 1 mixing valve 230 Volts Heating circuit 2 circulation pump 230 Volts X5 X6 3 stage electric heater relay control 230 Volts NOTE Do NOT connect the electric heater to the controller without an intermediate relay See example below 704 Contactor Butter tank electric heater Contactor DHW pump 230 Volts Heat pump on off 230 Volts Page 45 of 61 PTO for remaining connections DHW Immersion heater relay control 230 Volts NOTE Do NOT connect the immersion heater to the controller without an intermediate relay See below DANGER System External power Con
32. revent noise and vibrations from causing nuisance to building occupants or neighbouring property s The heat pump should be sited away from sleeping areas and shall be sited away from the influence of strong winds Provision shall be made for maintenance access to the unit particularly from behind and to the right looking at the machine from the front Provision shall be made for the safe removal of waste evaporative water from the heat pump which is produced during the defrost cycle This is particularly important during winter months when ground freezing may occur The run off from the defrost process must be directed away from foot paths patios and roadways Pipework external to the building shall be insulated against extreme temperatures in order to prevent loss of heat from the system Freeze protection of working units is not required due to the automatic frost protection function of the heat pump Caution must be exercised under cold conditions as the heat pump may start unexpectedly In exceptional circumstances or when there is a possibility of power loss during cold conditions it is recommended that an anti freeze solution be added to the heating system in order to provide freeze protection All electrical wiring shall be suitably protected against accidental damage and ingress of moisture to any part of the heat pump The heat pump may be connected to the heating system via a heating buffer tank which provides a ready supply of h
33. s within the heat pump are different from standard UK plumbing sizes Anti vibration Must be securely feet anchored to the heat pump and to the ground Heat Pump Available as compatible 180L DHW Cylinders 210L 250L solar with G3 kit option 300L solar D option Page 8 of 61 4 Port Buffer tank Flexible hose kit Full bore isolation valve Full bore isolation valve with strainer 3 Way Valve Page 9 of 61 Available as 50L 95L 150L 210L Contains 2 x hoses with 1 BSP M thread and fibre washers 1 x 3 port zone valve Hydraulic separator Electric Water Heater 2nd temperature kit Advanced NEEEEEEEEEEEEEEEEN System Controller Pack aan aas Page 10 of 61 Only to be used in systems with sufficient open flow water volume to meet the reduirements of the Heat Pump Must be fitted in accordance with Hitachi recommendations for pump and bypass as required Contains Mixer valve and sensor to enable control of a low temperature heating circuit Refer to Advanced System Control Reference Manual Key installation considerations Installations within 4km of the Sea or Ocean will require an anti corrosion protection treatment In such circumstances the Blygold option must be chosen when the Heat Pump is ordered The heat pump must be mounted externally away from obstructions which might prevent smooth air flow through the unit Mountings shall be such as to p
34. ssel 2 type Vessel3 type System has been flushed and cleaned in accordance with BS7593 Corrosion inhibitor added Type Quantity S Bypass valves set appropriately o o System filled and vented with allvalvesopen oo o o Suitably rated Circuit breaker and cable for heat pump __ o i OS Suitably rated Circuit breaker and cable forimmersionheater o J Suitably rated fuses in spur outlet for Advanced System Controller _ __ _ J Suitably rated fused supplies to all other ancillary components __ o J Heating and hot water sensors correctly fitted with good thermal contact and mechanically ma sound Outside sensor if fitted mounted away from direct sunlight and on North facing wall N Electrical installation complies with BS7671 Installation complies with Building regulations ma Page 58 of 61 Heat pump commissioning certificate Page 3 of 3 Operational Test Results DHW heating time N DHW final temperature Flow rate during DHW S ae temperature DHW temperature DHW temperature Heating temperature Heating heating Heating Heating HC2flow temperature HC2 return temperature Heating Heating Flow rate during defrost DHW Time settings Period 1 Period 2 Room Unit settings Time amp Temp e g 6am amp 21 C Commissioning engineer notes Operation and system controls demonstrated to customer Sy Manufacturers literature left with customer ey Signature of COMMISSION engineer
35. t the system components ei AE Connect the sensors RF receiver Heat pump and other system components to the systems controller according to your selected system configuration 5 Power up the system controller and perform a factory reset by pressing the RESET button select language and hydraulic configuration 6 Set the date time and essential system parameters according to the selected system configuration 7 Set the DHW program if required 8 Ensure room unit is communicating with the system controller If not perform binding procedure 9 Set time temperature profile in accordance with customer s wishes 10 Review all parameter settings according the chosen system configuration 11 Test the system 12 Complete commissioning documentation and show end user how to operate the room unit 13 Leave all literature with the customer 14 Return Commissioning certificate to Hitachi in order to activate warranty Important Considerations Pre Installation Identify suitable space for Heat Pump Domestic Hot Water DHW cylinder and heating buffer tank Consider location of key plumbing components bearing in mind requirement for maintenance access Availability of suitable water supply Availability of suitable electricity supply N B many supply distribution authorities require notice prior to connection heat pumps Installation As Quick start above Post Installation Thorough explanation of system and heating controls
36. troller source to X9 Isolate elsewhere Contactor Immersion Heat pump 0 20mA control Extra low voltage Extra Low voltage Heat pump communications signal Extra Low voltage Page 46 of 61 This page is intentionally left blank Page 47 of 61 Configuration 3 1 Heat pump with boiler only for hot water and heating support Note DHW parameter switched off in ASC S Plan DHW Control Reciever Yutaki HC1 Sensor Flow Sensor HITACHI Mains Supply ie HC1 Mixer Boiler valve Yutaki Boiler fee Yutaki 2 To Heating Configuration 3 1 System Configuration essential settings Parameter Description Meg System Configuration 3 1 P301 DHW type 0 off System Configuration other settings POO1 P002 Frost protection parameters 04 gt 00 gt 00 01 POO3 04500502 P003 Summer switch off P701 P716 Boiler operating parameters 04 gt 05 gt 00 15 P008 Boiler manual release on heat pump fault 03 gt 05 Inputs to system controller Configuration 3 2 System supply temperature sensor Extra Low voltage Page 48 of 61 Consumer Unit ejejejejejejejejojo PT el a a olelelelelelelelele Boiler ATA 3A Fused IP65 Isolator i 10A Fused ASC Yutaki Outputs from system controller Configuration 3 2 Heating circuit valve 230 Volts DHW pump 230 Volts Heat pump on off 230 Volts Boiler on off 230 Volts Danger power supplie
37. uit 1 circulation pump if not derived from local heating controls 230 Volts Page 26 of 61 Heating circuit example 2 ASC X1 Open flow heating circuits See minimum volume requirements Hydraulic separator Single circuit unmixed essential settings Parameter Deseription Mer System Configuration other settings P104 HC1 Room compensation settings 04 gt 01 gt 02 P105 P106 HC1 minimum and maximum supply set points 04 gt 01 gt 03 04 P108 Mixing valve running time see manufacturers data 04 gt 01 gt 06 Inputs to system controller Po Imputstosystemeontroller O SS U1 System supply temperature sensor Extra Low voltage ii EN iii id Page 27 of 61 Heating circuit examples 3 HC1 pump must be powered from X1 if no buffer tank is fitted O Va Cc Vv WY U EE i Mains Supply HC1 Pump HC1 Mixer HC2 Pump Parameter Description Meg System Configuration other settings Inputs to system controller Outputs from system controller Heating circuit 1 circulation pump alternatively powered from local heating 230 Volts system see text Heating circuit 1 mixing valve 230 Volts Heating circuit 2 circulation pump alternatively powered from local heating 230 Volts system see text Page 28 of 61 Heating circuit examples 4 N B This system is not compatible with boiler operation as X5 X6 are used for boiler control HC1 pump must be powered from X1
38. y this distance will be greater than 200mm in order to allow sufficient access for maintenance of the unit Any roof or structure connected to the rear wall shall be at least 1000mm above the heat pump Page 13 of 61 A clear space of at least 600mm shall be made in front of the heat pump Plants or foliage in front of the heat pump may provide a good source of visible protection and absorb some of the high frequencies generated by the inverter but at this distance should not be allowed to grow above half the height of the unit The air expressed from the front of the heat pump shall often be at sub zero temperatures which may damage such flora Ideally 500mm should be made available either side of the heat pump to facilitate efficient air flow and allow maintenance access In exceptional conditions this space may be reduced to the absolute minimums expressed in the service manual although performance may be affected and maintenance access may be compromised The heat pump should be sited away from sources of falling leaves build up of snow and strong winds Details of space limitations for more complex spaces are shown on page 13 of the Service manual Mounting Ideally the heat pump shall be mounted on a concrete base of dimensions greater than 440mm x 1250mm The base shall be separated from any dwelling and shall provide drainage for any condensate run off A typical base is shown below Water run off away from walkways
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