Related Manuals for Hitachi RHUE-3AVHN1
Summary of Contents for Hitachi RHUE-3AVHN1
- Page 1 Hitachi Air Conditioning Europe SAS UK Branch. Whitebrook Park, Lower Cookham Road, Maidenhead, Berkshire SL6 8YA V1 – 2/15 Hitachi Yutaki Heat pump Installation reference manual Model Numbers RHUE-3AVHN1 RHUE-(3-6)A(V)HN-HM...
- Page 2 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 in a recognised Hitachi training centre may void the warranty on any products supplied.
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Page 3: Table Of Contents
Contents Page Quick Start ....................4 Configuration selection guide ............... Introduction ....................List of Accessories ..................Key installation considerations ................. Transportation of heat pump ................. Heat Pump hydraulic installation considerations ........... Advanced System Controller pack ............Electrical installation ..................Heating system hydraulics ................. -
Page 4: Quick Start
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. - Page 5 Page 5 of 61...
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Page 6: Introduction
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 and the reduction of temperature of the system water during the defrost operation. Model RHUE-3AVHN1 RHUE-3A(V)HN1-HM RHUE-4AVHN1-HM RHUE-5A(V)HN1-HM... - Page 7 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.
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Page 8: List Of Accessories
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. - Page 9 4 Port Buffer Available as tank 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 9 of 61...
- Page 10 Heat Pump. Electric Water- Must be fitted in Heater accordance with Hitachi recommendations for pump and bypass as required. 2nd temperature Contains Mixer valve and sensor to enable control of a low...
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Page 11: Key Installation Considerations
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. - Page 12 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.
- Page 13 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. Use suitable wire lifting ropes only • Protect the unit against abrasion from the lifting ropes •...
- Page 14 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.
- Page 15 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.
- Page 16 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 on different models. It is essential that water flow is in the correct direction.
- Page 17 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.
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Page 18: Advanced System Controller Pack
Advanced System Controller (ASC) pack The Heat Pump is supplied with an Advanced System Controller pack. This comprises the following components: Advanced system Controller (ASC) • Terminal packs (1 white (power), 1 black (control and communications)) • Wire routing bar •... -
Page 19: Electrical Installation
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. - Page 20 The following table shows the power rating for each heat pump model. Model Power supply Max. Voltage () Min voltage (V) Max. Current (A) RHUE-3AVHN1 21.8 (*18.5) 1 ~ 230V 50Hz RHUE-3AVHN-HM 1 ~ 230V 50Hz 21 (*18) RHUE-4AVHN-HM 1 ~ 230V 50Hz...
- Page 21 Example Power Distribution (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 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.
- Page 22 Heat Pump Electrical Connections Do not pass cables through the ventilation hole at the rear of the Heat Pump. Do not pass cables through removable covers as this will prevent access for maintenance. An access plate is provided at the front of the Heat Pump to allow power and control cables to enter the machine.
- Page 23 Connections from the Heat Pump to the buffer loading pump and Advanced System Controller are shown below. N.B. Accessory ATW-HPA-01 is Heat pump Connections as follows: required if not already fitted in order to enable communication link Power between Heat Pump and Controller TB1 Live, Neutral and CPC (Earth) connections to locally switched supply Communications (See Inset Photo) TB1 Terminal 1 to System controller C3 port Terminal 27 (extra low voltage)
- Page 24 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...
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Page 25: Heating System Hydraulics
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 performance of the heat pump primary loading circuit. -
Page 26: Heating Circuit Examples
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. - Page 27 Heating circuit example 2 Single circuit unmixed (essential settings) Parameter Description Menu 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...
- Page 28 Heating circuit examples – 3 *HC1 pump must be powered from X1 if no buffer tank is fitted 2 circuit – 1 mixed (essential settings) Parameter Description Menu P101 HC1 type 1 (mixing) 03>01 P201 HC2 type 1 (direct) 03>02 P102 HC1 OTC heating curve (set as required for system and building type) 04>01>00...
- Page 29 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 if no buffer tank is fitted 2 circuit – both mixed (essential settings) Parameter Description Menu...
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Page 30: Configuration H
Configuration H – Heat pump for heat only. No additional heat sources. Configuration H - System Configuration (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... - Page 31 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 RF Receiver Extra Low voltage Heat pump communications signal Extra Low voltage Page 31 of 61...
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Page 32: Configuration 1.0
Configuration 1.0 – Heat pump with control valves, DHW with Legionella control immersion heater and heating buffer tank. No additional heat sources. Configuration 1.0 - System Configuration (essential settings) Parameter Description Menu Conf System Configuration 1.2 Reset menu P301 DHW type 2 (pump) N.B. 2 port valves are treated as pumps for the 03>03 purpose of this configuration P310... - Page 33 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.
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Page 34: Configuration 1.2
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 Configuration 1.2 – System Configuration (essential settings) Parameter Description Menu... - Page 35 Outputs from system controller – Configuration 1.2 Heating circuit 1 circulation pump 230 Volts X2:X3 Heating circuit 1 mixing valve 230 Volts Heating circuit 2 circulation pump 230 Volts X5:X6 Heating circuit 2 mixing valve 230 Volts 3 port valve 230 Volts Heat pump on/off 230 Volts...
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Page 36: Configuration 2.0
Configuration 2.0 – Heat pump with heating buffer, valve control DHW with Legionella control immersion heater and Electric heating backup Configuration 2.0 – System Configuration (essential settings) Parameter Description Menu Conf System Configuration 2.2 Reset menu P301 DHW type 2 (pump) 03>03 P310 DHW Electric heater type 1 (Enable heater) - Page 37 Outputs from system controller – Configuration 2.0 Heating circuit 2 port valve 230 Volts X5:X6 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. DHW 2 port valve 230 Volts Heat pump on/off...
- Page 38 DHW Immersion heater relay control 230 Volts NOTE: Do NOT connect the immersion heater to the controller without an intermediate relay. See below. DANGER (External power source to X9, Isolate elsewhere) Heat pump 0 – 20mA control Extra low voltage RF Receiver Extra Low voltage Heat pump communications signal...
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Page 40: Configuration 2.1
Configuration 2.1– Heat pump with 3 port mixer valve heating via buffer DHW with Legionella control immersion heater and Electric heating backup Configuration 2.1 – System Configuration (essential settings) Parameter Description Menu Conf System Configuration 2.1 Reset menu P301 DHW type 1 (valve) 03>03 P310 DHW Electric heater type 1 (Enable heater) - Page 41 Outputs from system controller – Configuration 2.1 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. Heating / DHW 3 port valve 230 Volts Heat pump on/off 230 Volts PTO for remaining connections...
- Page 42 DHW Immersion heater relay control 230 Volts NOTE: Do NOT connect the immersion heater to the controller without an intermediate relay. See below. DANGER (External power source to X9, Isolate elsewhere) Heat pump 0 – 20mA control Extra low voltage RF Receiver Extra Low voltage Heat pump communications signal...
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Page 44: Configuration 2.2
Configuration 2.2 – Heat pump with hydraulic separator, pumped DHW with Legionella control immersion heater and electric heating backup Configuration 2.2 – System Configuration (essential settings) Parameter Description Menu Conf System Configuration 2.2 Reset menu P301 DHW type 2 (pump) 03>03 P310 DHW Electric heater type 1 (Enable heater) - Page 45 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.
- Page 46 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 (External power source to X9, Isolate elsewhere) Heat pump 0 – 20mA control Extra low voltage RF Receiver Extra Low voltage...
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Page 48: Configuration 3.1
Configuration 3.1 – Heat pump with boiler only for hot water and heating support Configuration 3.1 – System Configuration (essential settings) Parameter Description Menu Conf System Configuration 3.1 Reset menu P301 DHW type 0 (off) 03>03 System Configuration (other settings) P001 –... - Page 49 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 supplied from external source. Isolate elsewhere Heat pump 0 – 20mA control Extra low voltage RF Receiver Extra Low voltage...
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Page 50: Configuration 3.2
Configuration 3.2 – Heat pump with boiler support , and DHW Configuration 3.2 – System Configuration (essential settings) Parameter Description Menu Conf System Configuration 3.2 Reset menu P301 DHW type 2 (pump) 03>03 System Configuration (other settings) DHW loading times P302 –... - Page 51 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. Isolate elsewhere Heat pump 0 – 20mA control Extra low voltage RF Receiver Extra Low voltage Heat pump communications signal Extra Low voltage...
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Page 52: Configuration 4.1
Configuration 4.1 – Heat pump with boiler mixer support , 2 heating circuits and DHW Configuration 4.1 – System Configuration (essential settings) Parameter Description Menu Conf System Configuration 4.1 Reset menu P301 DHW type 2 (pump) 03>03 System Configuration (other settings) DHW loading times P302 –... - Page 53 Outputs from system controller – Configuration 4.1 Heating valve 230 Volts X5:X6 Boiler bypass / mixing valve 230 Volts DHW valve 230 Volts Heat pump on/off 230 Volts Boiler on / off 230 Volts Danger, power supplied from external source. Isolate elsewhere Heat pump 0 –...
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Page 54: Commissioning Procedure
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’... - Page 55 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 return to Hitachi Page 55 of 61...
- Page 56 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 l/m...
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Page 57: Commissioning Certificate - Page 1 Of 3
Commissioning Certificate - Page 1 of 3 Installer name Commissioning (Print name) engineer name (Print name) Installer Company Commissioning Name engineer Company Address Name Phone Address Phone Customer name Heat pump Model Site address Heat pump serial no. Installation details Heat pump location Buffer tank / Hydraulic separator... - Page 58 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...
- Page 59 Heat pump commissioning certificate – Page 3 of 3 Operational Test Results DHW heating time DHW final temperature Flow rate during DHW Heat pump flow Heat pump return temperature (DHW) temperature (DHW) Heat pump flow Heat pump return temperature (Heating) temperature (Heating) Flow rate during heating...
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Page 60: Service Record
Service Record Service 1 Service 2 Date Date Engineer name Engineer name Company name Company name Contact telephone Contact telephone Engineer Engineer comments comments Engineer Engineer signature signature Customer Customer signature signature Service 3 Service 4 Date Date Engineer name Engineer name Company name Company name... - Page 61 Service Record Service 7 Service 8 Date Date Engineer name Engineer name Company name Company name Contact telephone Contact telephone Engineer Engineer comments comments Engineer Engineer signature signature Customer Customer signature signature Service 9 Service 10 Date Date Engineer name Engineer name Company name Company name...