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Mitsubishi Electric Ecodan EHSC series Installation Manual

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Hydrobox
EHSC series
EHPX series
ERSC series

INSTALLATION MANUAL

For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing
the hydrobox. English is the original language. The other language versions are translations of the original.
INSTALLATIONSHANDBUCH
Aus Sicherheitsgründen und zur richtigen Verwendung vor der Installation der Hydrobox die vorliegende Bedienungsanleitung und die Installati-
onsanleitung der Außeneinheit gründlich durchlesen. Die Originalsprache ist Englisch. Die anderen Sprachversionen sind vom Original übersetzt.
MANUEL D'INSTALLATION
Pour une utilisation correcte et sûre, lisez soigneusement ce manuel et le manuel d'installation de l'unité extérieure avant d'installer
l'ECODAN hydrobox. L'anglais est la langue originale. Les versions fournies dans d'autres langues sont des traductions de l'original.
INSTALLATIEHANDLEIDING
Lees voor een veilig en juist gebruik deze handleiding en de installatiehandleiding van de buiten-unit aandachtig door voordat u met
de installatie van de hydrobox begint. Engels is de oorspronkelijke taal. De andere taalversies zijn vertalingen van het origineel.
MANUAL DE INSTALACIÓN
Para un uso correcto y seguro, lea detalladamente este manual y el manual de instalación de la unidad exterior antes de instalar
la Hydrobox. El idioma original del documento es el inglés. Las versiones en los demás idiomas son traducciones del original.
MANUALE DI INSTALLAZIONE
Per un utilizzo sicuro e corretto, prima di installare l'Hydrobox leggere attentamente questo manuale e quello di installazione
dell'unità esterna. Il testo originale è redatto in lingua inglese. Le altre versioni linguistiche rappresentano traduzioni dell'originale.
MANUAL DE INSTALAÇÃO
Para uma utilização segura e correcta, leia este manual e o manual de instalação da unidade interior antes de instalar
o permutador de calor. O idioma original é o inglês. As versões em outros idiomas são traduções do idioma original.
INSTALLATIONSMANUAL
Af hensyn til sikker og korrekt brug skal denne vejledning og vejledningen til udendørsenheden læses omhyggeligt, inden
hydroboxenheden installeres. Engelsk er det oprindelige sprog. De andre sprogversioner er oversættelser af originalen.
INSTALLATIONSMANUAL
För säker och korrekt användning, läs denna manual och utomhusenhetens installationsmanual innan du
installerar hydroboxen. Engelska är originalspråket. De övriga språkversionerna är översättningar av originalet.
INSTALLERINGSHÅNDBOK
For å sikre en trygg og riktig bruk skal du lese denne håndboken og installeringshåndboken for utendørsenheten grundig
før du monterer hydroboksen. Engelsk er originalspråket. De andre språkversjonene er oversettelser av originalen.
ASENNUSOPAS
Lue turvallista ja asianmukaista käyttöä varten tämä opas ja ulkoyksikön asennusopas huolellisesti ennen
hydroboxin asentamista. Alkuperäiskieli on englanti. Muut kieliversiot ovat alkuperäisen käännöksiä.
FOR INSTALLER
FÜR INSTALLATEURE
POUR L'INSTALLATEUR
VOOR DE INSTALLATEUR
PARA EL INSTALADOR
PER L'INSTALLATORE
PARA O INSTALADOR
TIL INSTALLATØREN
FÖR INSTALLATÖREN
FOR MONTØREN
ASENTAJALLE
English (GB)
Deutsch (D)
Français (F)
Nederlands (NL)
Español (E)
Italiano (I)
Português (P)
Dansk (DE)
Svenska (SW)
Norsk (NO)
Suomi (FI)

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  Summary of Contents for Mitsubishi Electric Ecodan EHSC series

  • Page 1: Installation Manual

    Hydrobox EHSC series EHPX series ERSC series INSTALLATION MANUAL FOR INSTALLER English (GB) For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing the hydrobox. English is the original language. The other language versions are translations of the original. INSTALLATIONSHANDBUCH FÜR INSTALLATEURE Deutsch (D)
  • Page 2: Table Of Contents

    Contents 1. Safety Notices ..............2 4.4 Refrigerant Pipework (Split Model Systems only) .. 22 2. Introduction ..............4 Precautions ..............22 Overview of the System ..........4 Connecting pipes (Figure 4.4.1) ........ 22 How the Heat Pump Works .......... 4 4.5 Electrical Connection ..........
  • Page 3: Safety Notices

    Do not position furniture or electrical appliances below the outdoor unit or hydrobox. The discharge pipework from the emergency/safety devices of the hydrobox should be installed according to local law. Only use accessories and replacement parts authorised by Mitsubishi Electric ask a qualified technician to fit the parts. Electrical All electrical work should be performed by a qualified technician according to local regulations and the instructions given in this manual.
  • Page 4 Safety Notices WARNING (SPLIT MODELS ONLY) Do not discharge refrigerant into the atmosphere if refrigerant leaks during installation, ventilate the room. Use appropriate tools for high pressure refrigerant. When pumping down refrigerant , stop the compressor before disconnecting the refrigerant pipes. During installation securely fasten the refrigerant pipes before starting the compressor.
  • Page 5: Introduction

    Overview of the System The Mitsubishi Electric Air to Water (ATW) for heat pump system with hydrobox consists of the following components; outdoor heat pump unit and indoor hyd- robox incorporating the main controller.
  • Page 6: Overview Of The Controls

    The room temperature sensor can either be wired or the Mitsubishi Electric wire- less remote controller can be used as it incorporates a temperature sensor. For more information on room temperature sensor options see section ‘Remote Con-...
  • Page 7: Technical Information

    Technical Information...
  • Page 8: Component Parts

    Technical Information Component Parts <EHSC-*M*B> (Split model system) Number Component Control and electrical box Main controller Manometer Expansion vessel Expansion vessel charge valve Automatic air vent Booster heater Drain cock Water circulation pump Pressure relief valve Flow switch Plate heat exchanger Strainer valve Inlet from space heating/Indirect DHW tank (pri- mary return)
  • Page 9 Technical Information <EHSC-*M*EB> (Split model system without expansion vessel) Number Component Control and electrical box Main controller Manometer Automatic air vent Booster heater Drain cock Water circulation pump Pressure relief valve Flow switch Plate heat exchanger Strainer valve Inlet from space heating/Indirect DHW tank (pri- mary return) Outlet to space heating/Indirect DHW tank (primary flow)
  • Page 10 Technical Information <EHPX> (Packaged model system) Number Component Control and electrical box Main controller Manometer Expansion vessel Expansion vessel charge valve Automatic air vent Booster heater Drain cock Water circulation pump Pressure relief valve Flow switch Strainer valve Inlet from space heating/Indirect DHW tank (pri- mary return) Inlet from heat pump Outlet to heat pump...
  • Page 11 Technical Information <ERSC> (Split model system for heating and cooling) Number Component Control and electrical box Main controller Manometer Expansion vessel Expansion vessel charge valve Automatic air vent Booster heater Drain cock Water circulation pump Pressure relief valve Flow switch Plate heat exchanger Strainer valve Drain pan...
  • Page 12: Technical Drawings

    Technical Information Technical Drawings <EHSC> (Split model system) Automatic air vent Earth leakage circuit breaker Terminal block Pressure relief Main controller valve (233) <Front> <Side> <Rear> Letter Pipe description Connection size/type Space heating/Indirect DHW 28 mm/Compression tank (primary) return connection Space heating/Indirect DHW 28 mm/Compression tank (primary) flow connection...
  • Page 13 Technical Information <ERSC> (Split model system) Automatic air vent Earth leakage circuit breaker Terminal block Pressure relief Main controller valve (233) <Rear> <Right side> <Front> Letter Pipe description Connection size/type Space heating and cooling/ Indirect DHW tank (primary) G nut return connection Space heating and cooling/ Indirect DHW tank (primary) flow...
  • Page 14: Unit Compatibility

    Technical Information Unit Compatibility Hydrobox EHSC-VM6B EHSC-YM9B EHSC-VM6EB EHSC-YM9EB EHPX-VM2B EHPX-VM6B EHSC-YM9B ERSC-VM2B Outdoor unit PUHZ-W50-85 Packaged-type PUHZ-HW112-140 Split-type PUHZ-RP35-140 PUHZ-HRP71-125 PUHZ-SW40-120 PUHZ-SHW80-140 PUHZ-FRP *1 Not available for connection to PUHZ-FRP <Table 3.10> Water circuit diagram <EHSC> (Split model system) Refrigerant pipe Water pipe <ERSC>...
  • Page 15: Local System

    Technical Information Local system 1-zone temperature control Zone1 Zone1 2-zone temperature control Zone1 Zone2 1-zone temperature control with boiler 2-zone temperature control with boiler Zone1 Zone1 Zone2 1.  Z one1heatemitters(e.g.radiator,fancoilunit)(fieldsupply) 2. Mixingtank(fieldsupply) 3. Zone1flowwatertemp.thermistor(THW6)(option) 4. Zone1returnwatertemp.thermistor(THW7)(option) 5. Zone1watercirculationpump(fieldsupply) 6. Zone1flowswitch(fieldsupply) 7.
  • Page 16: Installation

    4. Installation Installation <Preparation before the installation and service> ● Prepare the proper tools. ● Prepare the proper protection. ● Allow parts to cool before attempting any maintenance. ● Provide adequate ventilation. ● After stopping the operation of the system, turn off the power-supply breaker and remove the power plug. ●...
  • Page 17: Mounting Procedure

    Installation Mounting procedure . Install the included back plate accessory. * When installing the back plate, use field-supplied screws and compatible fixing plugs. <Accessory> <Front view> Notch Back plate Back plate Wall Screw mounting holes ● Ensure that the notch is positioned at the TOP of the back plate. <Figure 4.1.4>...
  • Page 18 Installation ) Each of the right and left side panels has a mark indication. Lift up the unit so that the marks are positioned above the top edge of the back plate as shown below. <Side view of unit> Unit mark Wall Hook...
  • Page 19: Water Quality And System Preparation

    Installation 4.2 Water Quality and System Preparation Minimum amount of water required in the space heating/cooling circuit General • Water quality should be to European Directive 98/83 EC standards. Outdoor heat pump unit Minimum water quantity [L] ► pH value of 6.5-8.0 (Recommended: pH6.5 - 7.5) Packaged model PUHZ-W50 ►...
  • Page 20: Water Pipe Work

    Installation 4.3 Water Pipe Work Pipework Connections Note: Prevent the field piping from straining the piping on the hydrobox by Connections to the hydrobox should be made using the 28 mm compression as fixing it to a wall or applying other methods. appropriate.
  • Page 21: Sizing Expansion Vessels

    Installation sizing Expansion Vessels Expansion vessel sizing Expansion vessel volume must fit the local system water volume. To size an expansion vessel both for the heating and cooling circuits the following formula and graph can be used. When the necessary expansion vessel volume exceeds the volume of an built-in expansion vessel, install an additional expansion vessel so that the sum of the volumes of the expansion vessels exceeds the necessary expansion vessel volume.
  • Page 22: Safety Device Connections

    Installation Water Circulation Pump Characteristics EHSC, ERSC series 80.0 Speed 5 (Default) 70.0 Speed 4 Speed 3 60.0 Speed 2 50.0 Speed 1 40.0 30.0 20.0 10.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 Flow rate [L/min] <Figure 4.3.4> EHPX series * (with PUHZ-W50) EHPX series * (with PUHZ-W85) EHPX series * (with PUHZ-HW112/140) 80.0...
  • Page 23: Refrigerant Pipework (Split Model Systems Only)

    Installation 4.4 Refrigerant Pipework (Split Model Systems only) 45 2 Installation of refrigerant pipework MUST only be done by a technician with rele- vant qualifications. Installation requirements may differ depending on the outdoor unit selected. Please also refer to outdoor unit installation manual when connect- ing refrigerant pipework.
  • Page 24: Electrical Connection

    Installation 4.5 Electrical Connection The hydrobox can be powered in two ways. . Power cable is run from the outdoor unit to the hydrobox. All electrical work should be carried out by a suitably qualified technician. Failure 2. Hydrobox has independent power source. to comply with this could lead to electrocution, fire, and death.
  • Page 25 Installation Option 1: Hydrobox powered via outdoor unit <1 phase> Hydrobox Outdoor unit To control board Power Wiring Earth supply circuit leakage breaker or circuit 230V Isolating 50Hz breaker switch ECB1 Power booster Wiring supply heater circuit (Primary circuit) breaker or 230V Isolating 50Hz...
  • Page 26 Installation <3 phase> Hydrobox Outdoor unit To control board Power supply Earth Wiring leakage circuit 400V circuit breaker or 50Hz breaker Isolating switch ECB1 Power booster supply heater Wiring (Primary circuit) circuit 400V breaker or 50Hz Isolating switch *1 If the installed earth leakage circuit breaker does not have an over-current protection function, install a breaker with that function along the same power line.
  • Page 27 Installation Option2: Hydrobox powered by independent source If the hydrobox and outdoor units have separate power supplies, the following requirements MUST be carried out: Black Initial settings CN01 • Change connector connections in hydrobox control and electrical box (Power supplied Hydrobox (see Figure 4.5.7).
  • Page 28 Installation <3 phase> Hydrobox Power supply Earth Wiring leakage circuit 230V breaker or circuit 50Hz breaker Isolating switch Outdoor unit To control board Power supply Wiring Earth circuit leakage 400V breaker or circuit 50Hz Isolating breaker switch ECB1 booster Power Wiring heater supply...
  • Page 29: System Set Up

    5. System Set UP System Set Up 5.1 Dip Switch Functions Located on the FTC4 printed circuit board are 4 sets of small white switches known as Dip switches. The Dip switch number is printed on the circuit board next to the relevant switches. The word ON is printed on the circuit board and on the Dip switch block itself.
  • Page 30: Connecting Inputs/Outputs

    System Set Up 5.2 Connecting inputs/outputs CNP1(WHT) 1 2 CN01 When the wires are wired to adjacent terminals use ring terminals and insu- 3 (BLK) 4 late the wires. 5 TBO.1 6 CN3C 7 8 (BLU) CNV1 9 (WHT) 10 11...
  • Page 31: Outputs

    System Set Up Outputs Name Terminal block Connector Item Signal/Max current Max. total current OUT TBO. 3-4 CNP Water circulation pump 1 output (Space heating & DHW) 230V AC 1.0 A Max 3.0 A (a) OUT2 TBO. 5-6 — Water circulation pump 2 output (Space heating for Zone1) OFF 230V AC 1.0 A Max OUT3 TBO. 7-8...
  • Page 32: Installation Procedure For Dhw Tank

    System Set Up 5.4 Installation procedure for DHW tank • Power supply: 230V AC • Current: 0.1A Max (If over 0.1A you must use a relay) Note: • Type: Normally closed • Be aware that the respective DHW operations are greatly effected by the Installation Electrical connection Output signal...
  • Page 33 System Set Up Recommended DHW system Where system involves a DHW tank: Immersion Booster DHW tank BH function System diagram Thermistor heater heater Present Absent Present For space THW: Flow water temp. heating/ THW2: Return water temp. DHW tank cooling and THW5: Tank water temp.
  • Page 34: Remote Controller Options

    Room controller installation manual.) Control option B This option features the main controller and the Mitsubishi Electric thermistor wired to FTC4. The thermistor is used to monitor room temperature but can not make any FTC4 changes in control operation. Any changes to DHW (*1) must be made using the main controller mounted on the hydrobox.
  • Page 35: 2-Zone Temperature Control

    The thermostat is wired to IN6 on FTC4. (If the thermostat is allocated to Zone1, it is wired to IN1 on TBI.1.) (Refer to 5.2.) Control option B This option features the main controller, the Mitsubishi Electric thermistor and a locally supplied thermostat that are wired to FTC4. Room temperature...
  • Page 36: Remote Installation Of Main Controller

    System Set Up Remote Installation of Main Controller The following instructions are related to a system controlled as in Control option C. Metal back plate <Removing the main controller from the hydrobox> 1. Open front panel of hydrobox. (See section 4.2.) 2.
  • Page 37: Using Sd Memory Card

    (9) FTC4 supports FAT file system but not NTFS file system. (10) Mitsubishi Electric is not liable for any damages, in whole or in part, including failure of writing to an SD memory card, and corruption and loss of the saved data, or the like.
  • Page 38: Main Controller

    System Set Up 5.7 Main Controller <Main controller parts> Letter Name Function Screen Screen in which all information is displayed Menu Access to system settings for initial set up and modifications. Back Return to previous menu. Confirm Used to select or save. (Enter key) Power/Holiday If system is switched off pressing once will turn system on.
  • Page 39 System Set Up <Main Controller Menu Tree> Unrestricted access Initial Installer only Main screen Shaded items relate Information to DHW functions. Option These are only avail- Forced DHW ON/OFF able if the system ON/Prohibited/Timer includes a DHW tank. Heating/Cooling ON/Prohibited/Timer Holiday Active/Non active Set time...
  • Page 40 System Set Up <Main Controller Menu Tree> Unrestricted access Initial Installer only Main screen Shaded items relate to DHW functions. Main menu Service These are only avail- (Password protected) able if the system Manual operation includes a DHW tank. Function settings Thermistor adjustment Auxiliary settings Economy setting for pump...
  • Page 41: Setting The Main Controller

    System Set Up Setting the Main Controller After the power has been connected to the outdoor unit and hydrobox (See chap- ter 4.5) the initial system settings can be entered via the main controller. . Check all breakers and other safety devices are correctly installed and turn on power to the system.
  • Page 42: Domestic Hot Water (Dhw)/Legionella Prevention

    System Set Up 2. When 2-zone temperature control is active or wireless remote controllers are available, from Room RC zone select screen, select zone no. to assign to each remote controller. 3. From Sensor setting screen, select a room sensor to be used for monitoring the room temperature from Zone and Zone2 separately.
  • Page 43 System Set Up Explanation of DHW operation • When the DHW tank temperature drops from “DHW max. temp” by more than DHW tank temp. the “DHW max. temperature drop” (set by installer), DHW mode operates and Stop the flow from the primary heating/cooling circuit is diverted to heat the water in DHW max.
  • Page 44: Heating/Cooling

    System Set Up Forced DHW The forced DHW function is used to force the system to operate in DHW mode. In normal operation the water in the DHW tank will be heated either to the set tem- perature or for the maximum DHW time, whichever occurs first. However should there be a high demand for hot water ‘Forced DHW’...
  • Page 45: Holiday Mode

    System Set Up Holiday mode Holiday mode can be activated in 2 ways. Both methods will result in the Holiday Mode activation screen being shown. Option 1. From the main menu screen button E should be pressed. Be careful not to hold down button E for too long as this will turn off the controller and system.
  • Page 46 System Set Up <Setting the schedule timer> . In the preview menu screen press F4 button. Preview screen 2. First select the days of the week you wish to schedule. 3. Press F2/F3 buttons to move between days and F to check or uncheck the box.
  • Page 47: Service Menu

    System Set Up Service Menu The service menu provides functions for use by installer or service engineer. It is NOT intended the home owner alters settings within this menu. It is for this reason password protection is required to prevent unauthorised access to the service settings.
  • Page 48: Manual Operation

    System Set Up Manual operation During the filling of the system the water circulation pump and 3-way valve can be manually overridden using manual operation mode. When manual operation is selected a small timer icon appears in the screen. The function selected will only remain in manual operation for a maximum of 2 hours.
  • Page 49 System Set Up <Mixing valve control> From the Auxiliary settings menu highlight Mixing valve control. Press CONFIRM. The Mixing valve control screen is displayed. Use F1 and F2 buttons to set Running time between 30 to 240 seconds. The Running time equals to a period from full open of the valve (at a hot water mixing ratio of 100%) to full close (at a cold water mixing ratio of 100%).
  • Page 50 System Set Up Operation settings To access the Operation settings menu use F and F2 buttons to scroll through the service menu until Operation settings is highlighted. Press CONFIRM. Operation settings menu is displayed. Operation settings menu screen <Freeze stat function> From the Auxiliary settings menu highlight Freeze Stat Function.
  • Page 51 System Set Up <Room Temp Control (Heating)> This function allows operational setting of flow temperature range from the Ecodan and also the time interval at which the FTC4 collects and processes data for the auto adap- tation mode. From the Operation settings menu use F1 and F2 buttons to scroll through the list until Room temp.
  • Page 52: Password Protection

    System Set Up External input settings From the service menu use F and F2 buttons to highlight External input settings then press CONFIRM. <Demand control (IN4)> From the External input settings menu highlight Demand control (IN4). Press CONFIRM. The Demand control screen is displayed. External input settings menu screen Press F3 button to select Heat source OFF or Boiler.
  • Page 53 System Set Up Manual reset Should you wish to restore the factory settings at any time you should use the manual reset function. Please note this will reset ALL functions to the factory de- fault settings. From the service menu use F1 and F2 buttons to scroll through list until Manual Reset is highlighted.
  • Page 54: Commissioning

    6. Commissioning Commissioning Commissioning Pre-commissioning Checklist Before commissioning the hydrobox system complete the following table to ensure the necessary checks are carried out. System commissioning checklist Notes Installation location Air flow around the unit Outdoor unit Good/Poor Maintenance access Hydrobox Good/Poor Outdoor unit Good/Poor...
  • Page 55: Service And Maintenance

    7. Service and Maintenance Service and Maintenance Service and Maintenance The indoor hydrobox must be serviced once a year by a qualified individual. qualifications. Any maintenance or ‘DIY’ fixes done by a non-accredited person Servicing and maintenance of the outdoor unit should only be done by a Mitsubi- could invalidate the Warranty and/or result in damage to the hydrobox and injury shi Electric trained technician with relevant qualifications and experience.
  • Page 56 Contact your Mitsubishi Electric dealer. 7. Immersion heater cut-out tripped. 7. Check immersion heater thermostat and press reset button, located on immersion heater boss, if safe.
  • Page 57 Contact your Mitsubishi Electric dealer. 5. Immersion heater cut-out has been triggered. 5. Check immersion heater thermostat and press reset button located on immersion heater boss, if safe.
  • Page 58 Service and Maintenance Fault symptom Possible cause Explanation - Solution In 2-zone tempera- When Zone and Zone2 are both in heating Normal action no action necessary. ture control, only mode, the hot water temperature in Zone2 Zone2 does not does not exceed that in Zone. reach the set tem- Faulty wiring of motorized mixing valve Refer to "5.3 Wiring for 2-zone temperature control".
  • Page 59: Annual Maintenance

    Annual Maintenance It is essential that the hydrobox is serviced at least once a year by a qualified individual any spare parts required MUST be purchased from Mitsubishi Electric (safety matter). NEVER bypass safety devices or operate the unit without them being fully operational.
  • Page 60: Error Codes

    Service and Maintenance Error Codes Code Error Action Flow rate may be reduced check for; • Water leakage Circulation water temperature overheat protection • Strainer blockage • Water circulation pump function (Error code may display during filling of primary circuit, complete filling and reset error code.) DHW tank water temperature overheat protection Check the immersion heater and it’s contactor.
  • Page 61: Engineers Forms

    Service and Maintenance Engineers Forms (1/2) Should settings be changed from default, please enter and record new setting in ‘Field Setting’ column. This will ease resetting in the future should the system use change or the circuit board need to be replaced. Commissioning/Field settings record sheet Default setting Field Main controller screen...
  • Page 62 Service and Maintenance Engineers Forms (2/2) Commissioning/Field settings record sheet (continued from the previous page) Default Field Main controller screen Parameters Notes setting setting Service menu Heat source setting Standard/Heater/Boiler/Hybrid *5 Standard Operation settings Freeze stat function Outdoor ambient temp. (3 - 20°C) 5°C Simultaneous On/Off *6...
  • Page 63: Annual Maintenance Log Book

    Service and Maintenance Annual Maintenance Log Book Contractor name Engineer name Site name Site number Hydrobox maintenance record sheet Warranty number Model number Serial number Mechanical Frequency Notes Isolate and drain hydrobox, remove mesh from internal strainer clean and replace. Open the pressure relief valve, check for unrestricted discharge to the tundish and that the valve reseats correctly.
  • Page 64: Supplementary Information

    Supplementary information Refrigerant collecting (pumpdown) for split model systems only Refer to “Refrigerant collection” in the outdoor unit installation manual or service manual. Back-up operation of boiler Heating operation is backed up by boiler. For more details, refer to the installation manual of PAC-TH011HT-E. <Installation &...

This manual is also suitable for:

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