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Hitachi RHUE-3AVHN-HM, Installation & Reference Manual

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Hitachi RHUE-3AVHN-HM Installation & Reference Manual Download Page 35

Page 

35

 of 

61

 

 

 

 

Outputs from system controller – Configuration 1.2 

X1 

Heating circuit 1 circulation pump  

230 Volts 

X2:X3 

Heating circuit 1 mixing valve 

230 Volts 

X4 

Heating circuit 2 circulation pump 

230 Volts 

X5:X6 

Heating circuit 2 mixing valve 

230 Volts 

X7 

3 port valve 

230 Volts 

X8 

Heat pump on/off 

230 Volts 

X9 

DHW Immersion heater relay control  

NOTE: Do NOT connect the immersion heater to the controller without an 
intermediate relay. See below. 

 

230 Volts 

 
DANGER 
(External power 
source to X9, 
Isolate elsewhere) 

A1 

Heat pump 0 – 20mA control 

Extra low voltage 

C2 

RF Receiver 

Extra Low voltage 

C3 

Heat pump communications signal 

Extra Low voltage 

 

 

Summary of Contents for RHUE-3AVHN-HM

Page 1: ...Model Numbers RHUE 3AVHN1 RHUE 3 6 A V HN HM Hitachi Air Conditioning Europe SAS UK Branch Whitebrook Park Lower Cookham Road Maidenhead Berkshire SL6 8YA Hitachi Yutaki Heat pump Installation reference manual ...

Page 2: ...ages 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 SMGB0090 rev 0 01 2014 No part of this publication may be reproduced copied filed or transmitted in any shape or form without the express...

Page 3: ...lation considerations 16 Advanced System Controller pack 18 Electrical installation 19 Heating system hydraulics 25 Heating circuit examples 26 Configuration H 30 Configuration 1 0 32 Configuration 1 2 34 Configuration 2 0 38 Configuration 2 1 42 Configuration 2 2 46 Configuration 3 1 48 Configuration 3 2 50 Configuration 4 1 52 Commissioning procedure 55 Commissioning certificate 58 Service recor...

Page 4: ...ation 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 acc...

Page 5: ...Page 5 of 61 ...

Page 6: ...omestic 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...

Page 7: ...eat 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 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 t...

Page 8: ... such parts will allow the system perform within specified parameters Accessory Drawing symbol Notes Wilo ERP Approved buffer loading pump Additional accessories are required in order to fit the this pump inside the Heat Pump casing as hydraulic fittings within the heat pump are different from standard UK plumbing sizes Pump adaptor kit n a Anti vibration feet Must be securely anchored to the heat...

Page 9: ...t Buffer tank Available as 50L 95L 150L 210L Flexible hose kit Contains 2 x hoses with 1 BSP M thread and fibre washers Full bore isolation valve Full bore isolation valve with strainer 3 Way Valve 1 x 3 port zone valve ...

Page 10: ...ents of the Heat Pump Electric Water Heater Must be fitted in accordance with Hitachi recommendations for pump and bypass as required 2nd temperature kit Contains Mixer valve and sensor to enable control of a low temperature heating circuit Advanced System Controller Pack Refer to Advanced System Control Reference Manual ...

Page 11: ...ion 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 protectio...

Page 12: ...uctions 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 max...

Page 13: ...around 550mm from base of heat pump 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...

Page 14: ...he 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 1250m...

Page 15: ...est 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 po...

Page 16: ...ed 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 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...

Page 17: ... 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 an...

Page 18: ... Safety covers x 2 Temperature sensors x 2 RF Receiver Remote RF room unit with batteries 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...

Page 19: ...me 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 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 AS...

Page 20: ...1 230V 50Hz 253 207 32 29 RHUE 5AHN HM 3N 400V 50Hz 440 360 14 11 RHUE 6AHN HM 3N 400V 50Hz 440 360 18 15 Current excluding buffer loading pump 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 pro...

Page 21: ...ting 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 prevent...

Page 22: ...aintenance 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 Pu...

Page 23: ...al 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 N B Accessory ATW HPA 01 is required if not already fitted ...

Page 24: ... 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 25: ...atisfied 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 ...

Page 26: ...P101 Heating circuit 1 type 0 direct 03 01 P102 HC1 OTC heating curve set as required for system and building type 04 01 00 P103 HC1 Heating system emitter type 0 UFH 1 Radiator 2 Convector 04 01 01 System Configuration other settings P104 HC1 Room compensation settings 04 01 02 P105 P106 HC1 minimum and maximum supply set points 04 01 03 04 Inputs to system controller U1 System supply temperature...

Page 27: ...emitter type 0 UFH 1 Radiator 2 Convector 04 01 01 System Configuration other settings P104 HC1 Room compensation settings 04 01 02 P105 P106 HC1 minimum and maximum supply set points 04 01 03 04 P108 Mixing valve running time see manufacturers data 04 01 06 Inputs to system controller U1 System supply temperature sensor See configuration drawing for position Extra Low voltage Outputs from system ...

Page 28: ...mpensation settings 04 01 02 P105 P106 HC1 minimum and maximum supply set points 04 01 03 04 P108 Mixing valve running time see manufacturers data 04 01 06 P204 HC2 Room compensation settings 04 02 02 P205 P206 HC2 minimum and maximum supply set points 04 02 03 04 P208 Mixing valve running time see manufacturers data 04 02 06 Inputs to system controller U1 System flow sensor See Configuration draw...

Page 29: ...or 04 02 01 System Configuration other settings P302 P317 DHW set point s and parameters 04 03 00 16 P104 HC1 Room compensation settings 04 01 02 P105 P106 HC1 minimum and maximum supply set points 04 01 03 04 P204 HC2 Room compensation settings 04 02 02 P205 P206 HC2 minimum and maximum supply set points 04 02 03 04 Inputs to system controller U1 System flow sensor See Configuration drawing Extra...

Page 30: ...uration essential settings Parameter Description Menu Conf System Configuration 1 2 Reset menu System Configuration other settings P001 P002 Frost protection parameters 04 00 00 01 P003 Summer switch off 04 00 02 Inputs to system controller Configuration 1 0 U1 System supply temperature sensor Extra Low voltage ...

Page 31: ...er Configuration 1 0 X1 Heating circulation pump Optional local control 230 Volts X8 Heat pump on off 230 Volts A1 Heat pump 0 20mA control Extra low voltage C2 RF Receiver Extra Low voltage C3 Heat pump communications signal Extra Low voltage ...

Page 32: ...2 port valves are treated as pumps for the purpose of this configuration 03 03 P310 DHW Electric heater type 1 Enable heater 03 04 P309 DHW Anti legionella protection 04 03 07 System Configuration other settings DHW loading times 01 P302 P317 DHW set point s and parameters 04 03 00 16 P001 P002 Frost protection parameters 04 00 00 01 P003 Summer switch off 04 00 02 Inputs to system controller Conf...

Page 33: ...f 230 Volts X9 DHW Immersion heater relay control NOTE Do NOT connect the immersion heater to the controller without an intermediate relay See below 230 Volts DANGER External power source to X9 Isolate elsewhere A1 Heat pump 0 20mA control Extra low voltage C2 RF Receiver Extra Low voltage C3 Heat pump communications signal Extra Low voltage ...

Page 34: ...ameter Description Menu Conf System Configuration 1 2 Reset menu P301 DHW type 2 pump 03 03 P310 DHW Electric heater type 1 Enable heater 03 04 P309 DHW Anti legionella protection 04 03 07 System Configuration other settings DHW loading times 01 P302 P317 DHW set point s and parameters 04 03 00 16 P001 P002 Frost protection parameters 04 00 00 01 P003 Summer switch off 04 00 02 Inputs to system co...

Page 35: ... circuit 2 mixing valve 230 Volts X7 3 port valve 230 Volts X8 Heat pump on off 230 Volts X9 DHW Immersion heater relay control NOTE Do NOT connect the immersion heater to the controller without an intermediate relay See below 230 Volts DANGER External power source to X9 Isolate elsewhere A1 Heat pump 0 20mA control Extra low voltage C2 RF Receiver Extra Low voltage C3 Heat pump communications sig...

Page 36: ...eater type 1 Enable heater 03 04 P309 DHW Anti legionella protection 04 03 07 System Configuration other settings DHW loading times 01 P302 P317 DHW set point s and parameters 04 03 00 16 P001 P002 Frost protection parameters 04 00 00 01 P003 Summer switch off 04 00 02 P801 P810 Electric heater parameters 04 06 00 09 P009 Electric heater manual release on heat pump fault 03 06 Inputs to system con...

Page 37: ...t 2 port valve 230 Volts X5 X6 3 stage electric heater relay control NOTE Do NOT connect the buffer immersion heater to the controller without an intermediate relay See example below 230 Volts X7 DHW 2 port valve 230 Volts X8 Heat pump on off 230 Volts PTO for remaining connections ...

Page 38: ...the immersion heater to the controller without an intermediate relay See below 230 Volts DANGER External power source to X9 Isolate elsewhere A1 Heat pump 0 20mA control Extra low voltage C2 RF Receiver Extra Low voltage C3 Heat pump communications signal Extra Low voltage ...

Page 39: ...Page 39 of 61 This page is intentionally left blank ...

Page 40: ...ric heater type 1 Enable heater 03 04 P309 DHW Anti legionella protection 04 03 07 System Configuration other settings DHW loading times 01 P302 P317 DHW set point s and parameters 04 03 00 16 P001 P002 Frost protection parameters 04 00 00 01 P003 Summer switch off 04 00 02 P801 P810 Electric heater parameters 04 06 00 09 P009 Electric heater manual release on heat pump fault 03 06 Inputs to syste...

Page 41: ...2 1 X5 X6 3 stage electric heater relay control NOTE Do NOT connect the electric heater to the controller without an intermediate relay See example below 230 Volts X7 Heating DHW 3 port valve 230 Volts X8 Heat pump on off 230 Volts PTO for remaining connections ...

Page 42: ...the immersion heater to the controller without an intermediate relay See below 230 Volts DANGER External power source to X9 Isolate elsewhere A1 Heat pump 0 20mA control Extra low voltage C2 RF Receiver Extra Low voltage C3 Heat pump communications signal Extra Low voltage ...

Page 43: ...Page 43 of 61 This page is intentionally left blank ...

Page 44: ...ater type 1 Enable heater 03 04 P309 DHW Anti legionella protection 04 03 07 System Configuration other settings DHW loading times 01 P302 P317 DHW set point s and parameters 04 03 00 16 P001 P002 Frost protection parameters 04 00 00 01 P003 Summer switch off 04 00 02 P801 P810 Electric heater parameters 04 06 00 09 P009 Electric heater manual release on heat pump fault 03 06 Inputs to system cont...

Page 45: ...X2 X3 Heating circuit 1 mixing valve 230 Volts X4 Heating circuit 2 circulation pump 230 Volts X5 X6 3 stage electric heater relay control NOTE Do NOT connect the electric heater to the controller without an intermediate relay See example below 230 Volts X7 DHW pump 230 Volts X8 Heat pump on off 230 Volts ...

Page 46: ...Do NOT connect the immersion heater to the controller without an intermediate relay See below 230 Volts DANGER External power source to X9 Isolate elsewhere A1 Heat pump 0 20mA control Extra low voltage C2 RF Receiver Extra Low voltage C3 Heat pump communications signal Extra Low voltage ...

Page 47: ...Page 47 of 61 This page is intentionally left blank ...

Page 48: ...f System Configuration 3 1 Reset menu P301 DHW type 0 off 03 03 System Configuration other settings P001 P002 Frost protection parameters 04 00 00 01 P003 Summer switch off 04 00 02 P701 P716 Boiler operating parameters 04 05 00 15 P008 Boiler manual release on heat pump fault 03 05 Inputs to system controller Configuration 3 2 U1 System supply temperature sensor Extra Low voltage ...

Page 49: ...lve 230 Volts X7 DHW pump 230 Volts X8 Heat pump on off 230 Volts X9 Boiler on off 230 Volts Danger power supplied from external source Isolate elsewhere A1 Heat pump 0 20mA control Extra low voltage C2 RF Receiver Extra Low voltage C3 Heat pump communications signal Extra Low voltage ...

Page 50: ...iguration other settings DHW loading times 01 P302 P317 DHW set point s and parameters 04 03 00 16 P001 P002 Frost protection parameters 04 00 00 01 P003 Summer switch off 04 00 02 P701 P716 Boiler operating parameters 04 05 00 15 P008 Electric heater manual release on heat pump fault 03 05 Inputs to system controller Configuration 3 2 U1 System supply temperature sensor Extra Low voltage U5 DHW t...

Page 51: ...HW valve 230 Volts X8 Heat pump on off 230 Volts X9 Boiler on off 230 Volts Danger power supplied from external source Isolate elsewhere A1 Heat pump 0 20mA control Extra low voltage C2 RF Receiver Extra Low voltage C3 Heat pump communications signal Extra Low voltage ...

Page 52: ...ngs DHW loading times 01 P302 P317 DHW set point s and parameters 04 03 00 16 P001 P002 Frost protection parameters 04 00 00 01 P003 Summer switch off 04 00 02 P701 P716 Boiler parameters 04 05 00 15 P008 Boiler manual release on heat pump fault 03 05 Inputs to system controller Configuration 4 1 U1 System supply temperature sensor Extra Low voltage U2 Heating circuit 1 supply temperature Extra Lo...

Page 53: ... bypass mixing valve 230 Volts X7 DHW valve 230 Volts X8 Heat pump on off 230 Volts X9 Boiler on off 230 Volts Danger power supplied from external source Isolate elsewhere A1 Heat pump 0 20mA control Extra low voltage C2 RF Receiver Extra Low voltage C3 Heat pump communications signal Extra Low voltage ...

Page 54: ...he 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 Outpu...

Page 55: ...and A1 10 Power heat pump 11 Power ASC 12 Check alarm status on controller and take corrective action if any alarms persist 13 Ensure system is calling for heat and hot water 14 Monitor flow rate for heating hot water and defrost functions 15 Systematically check all system elements for correct operation 16 Hand over all documentation to customer 17 Complete system commissioning documents and retu...

Page 56: ...ts Based on a delta T of 5 degrees C Ensure the flow meter setting is correct before finalising commissioning RHUE 3 AVHN1 RHUE 3 AVHN HM RHUE 4 AVHN HM RHUE 5 AVHN HM RHUE 6 AVHN HM RHUE 5 AHN HM RHUE 6 AHN HM 22 l m 20 l m 27 l m 34 l m 40 l m 34 l m 40 l m ...

Page 57: ...odel Site address Heat pump serial no Installation details Heat pump location Buffer tank Hydraulic separator location Cylinder location Pipe size type from heat pump to cylinder and buffer Heating system description e g ufh radiators etc Ground First Other state detail Heat pump configuration reference delete as appropriate 1 0 1 1 1 2 2 0 2 1 2 2 3 0 3 1 3 2 4 1 Other describe Additional heat so...

Page 58: ...rnal 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 colour charge Vessel 2 type colour charge Vess...

Page 59: ...ow rate during heating HC1 flow temperature Heating HC1 return temperature Heating HC2flow temperature Heating HC2 return temperature Heating Flow rate during defrost DHW Time settings Period 1 Period 2 Room Unit settings Time Temp e g 6am 21 C Period 1 Period 2 Period 3 Period 4 Period 5 Period6 Commissioning engineer notes Operation and system controls demonstrated to customer Manufacturers lite...

Page 60: ...Service 3 Date Engineer name Company name Contact telephone Engineer comments Engineer signature Customer signature Service 4 Date Engineer name Company name Contact telephone Engineer comments Engineer signature Customer signature Service 5 Date Engineer name Company name Contact telephone Engineer comments Engineer signature Customer signature Service 6 Date Engineer name Company name Contact te...

Page 61: ...rvice 9 Date Engineer name Company name Contact telephone Engineer comments Engineer signature Customer signature Service 10 Date Engineer name Company name Contact telephone Engineer comments Engineer signature Customer signature Service 11 Date Engineer name Company name Contact telephone Engineer comments Engineer signature Customer signature Service 12 Date Engineer name Company name Contact t...

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