Mitsubishi Electric ecodan EHST20D-VM2C2 Installation Manual
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Mitsubishi Electric ecodan EHST20D-VM2C2 Installation Manual

Mitsubishi Electric ecodan EHST20D-VM2C2 Installation Manual

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Cylinder unit
EHST20D-VM2C2
ERST20D-VM2C2
EHPT20X-VM2C2
INSTALLATION MANUAL
For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing
the cylinder unit. English is the original language. The other languages versions are translation of the original.
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 duo. L'anglais est la langue originale. Les versions fournies dans d'autres langues sont des traductions de l'original.
FOR INSTALLER
POUR L'INSTALLATEUR
English (EN)
Français (FR)

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Summary of Contents for Mitsubishi Electric ecodan EHST20D-VM2C2

  • Page 1 Cylinder unit EHST20D-VM2C2 ERST20D-VM2C2 EHPT20X-VM2C2 INSTALLATION MANUAL FOR INSTALLER English (EN) For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing the cylinder unit. English is the original language. The other languages versions are translation of the original. MANUEL D’INSTALLATION POUR L’INSTALLATEUR Français (FR)

  • Page 2: Table Of Contents

    Contents 1. Safety Notices .................. 2 2. Introduction ..................2 3. Technical Information ..............3 4. Installation..................9 4.1 Location ..................9 4.2 Water Quality and System Preparation ......... 10 4.3 Water Pipe Work ................ 11 4.4 Electrical Connection ............... 15 5.

  • Page 3: Safety Notices

    Do not position furniture or electrical appliances below the outdoor unit or cylinder unit. The discharge pipework from the emergency devices of the cylinder unit 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: Technical Information

    Technical Information Product specification Cylinder unit Model name EHST20D-VM2C2 ERST20D-VM2C2 EHPT20X-VM2C2 Nominal domestic hot water volume 200 L Overall unit dimensions 1600 × 595 × 680 mm (Height × Width × Depth) Weight (empty) 103 kg 103 kg 98 kg Weight (full) 312 kg 312 kg...
  • Page 5 Technical Information Component Parts <EHST20D-VM2C2> <EHPT20X-VM2C2> <ERST20D-VM2C2> (Packaged model system) (Split model system) <Figure 3.1> EHST20D-VM2C2 Part name EHPT20X-VM2V2 ERST20D-VM2C2 DHW outlet pipe Cold water inlet pipe Water pipe (Space heating/cooling return connection) Water pipe (Space heating/cooling flow connection) Water pipe (Flow from heat pump connection) —...
  • Page 6 Technical Information <Unit: mm> Technical Drawings <EHST20D-VM2C2> <EHPT20X-VM2C2> Pressure relief valve Pressure relief valve (Primary circuit) (Sanitary circuit) Air vent G1/2 G1/2 Main remote controller Terminal block Front panel <Left side> <Front> <Right side> 67.8 127.8 342.3 402.3 470.7 462.3 510.7 522.3 <Top>...
  • Page 7 Technical Information Unit Compatibility Cylinder unit EHPT20X-VM2C2 EHST20D-VM2C2 ERST20D-VM2C2 Outdoor unit Packaged model PUHZ-W50, 85 — — Split model SUHZ-SW45 — PUHZ-SW40, 50, 75 — (See below.) <Table 3.4> • When connecting E*ST20D-VM2C2 to PUHZ-SW75, the following refrigerant joint pipes are necessary. PAC-SG74RJ-E (ø12.7 →...
  • Page 8 Technical Information Local system 1-zone temperature control Zone1 Zone1 2-zone temperature control 1-zone temperature control with boiler Zone1 Zone1 Zone2 2-zone temperature control with boiler 1-zone temperature control (2-zone valve ON/OFF control) Zone1 Zone1 Zone2 Zone2 1. Zone1 heat emitters (e.g. radiator, fan coil unit) (local supply) 10.
  • Page 9 Technical Information Energy monitor End user can monitor accumulated*1 ‘Consumed electrical energy’ and ‘Delivered heat energy’ in each operation mode*2 on the main remote controller. *1 Monthly and Year to date *2 - DHW operation - Space heating - Space cooling Refer to “5.9 Main remote controller”...

  • Page 10: 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 11: 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 Outdoor heat pump unit Minimum water quantity [L] • The water in both primary and sanitary circuit should be clean and with pH value Packaged model PUHZ-W50 of 6.5-8.0 •...

  • Page 12: Water Pipe Work

    Installation 4.3 Water Pipe Work Hydraulic filter work (ONLY EHPT20X-VM2C2) Hot Water Pipework Install a hydraulic filter or strainer (local supply) at the water intake (“Pipe E” in Fig.3.1) Connect the flow for the DHW to pipe A (Figure 3.1). The function of the following safety components of the cylinder unit should be checked on installation for any abnormalities;...
  • Page 13 Installation Filling the System (Primary Circuit) 1. Check and charge expansion vessel. 2. Check all connections including factory fitted ones are tight. 3. Insulate pipework between cylinder unit and outdoor unit. 4. Thoroughly clean and flush, system of all debris. (see section 4.2 for instruction.) 5.
  • Page 14 Installation Water Circulation Pump Characteristics Outdoor heat pump unit Water flow rate range [L/min] Packaged model PUHZ-W50 7.1–14.3 1. Primary circuit PUHZ-W85 10.0–25.8 Pump speed can be selected by main remote controller setting (see <Figure 4.3.5 and 4.3.6> ). Split model SUHZ-SW45 7.1–12.9 Adjust the pump speed setting so that the flow rate in the primary circuit is...
  • Page 15 Installation Immersion heater When an immersion heater is fitted, do NOT energise the heater until the DHW tank is full of water. Also do NOT energise any immersion heater if any sterilisation chemicals remain in the DHW tank as this will cause premature failure of the heater. The expansion vessel on the sanitary water side shall be installed as necessary Safety Device Connections in accordance with your local regulations.

  • Page 16: Electrical Connection

    Installation 4.4 Electrical Connection The cylinder unit can be powered in two ways. 1. Power cable is run from the outdoor unit to the cylinder unit. All electrical work should be carried out by a suitably qualified technician. Failure 2. Cylinder unit has independent power source to comply with this could lead to electrocution, fire, and death.
  • Page 17 Installation Option 2: Cylinder unit powered by independent source. If the cylinder unit and outdoor unit have separate power supplies, the following requirements MUST be carried out: Initial settings White (Power supplied by CN01 outdoor unit) • Change the interconnected wiring in the control and electrical box of the Cylinder unit cylinder unit (see Figure 4.4.2) control board...

  • Page 18: System Set Up

    System Set Up 5.1 DIP Switch Functions Located on the FTC printed circuit board are 5 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 19: Connecting Inputs/Outputs

    System Set Up 5.2 Connecting inputs/outputs TBO.1 CN01 (WHT) CNP1 (WHT) 6.3A 250V 10A 250V CNP4 TBO.2 When the wires are wired to adjacent terminals use ring (RED) CN3C terminals and insulate the wires. (BLU) LED1 CNPWM CNV1 TBO.3 (WHT) (WHT) CNRF (WHT)

  • Page 20: Wiring For 2-Zone Temperature Control

    System Set Up Outputs Name Terminal block Connector Item Signal/Max current Max. total current OUT1 TBO.1 1-2 CNP1 Water circulation pump 1 output (Space heating/cooling & DHW) 230V AC 1.0A Max. OUT2 TBO.1 3-4 — Water circulation pump 2 output (Space heating/cooling for Zone1) 230V AC 1.0A Max.

  • Page 21: 2-Zone Valve On/Off Control

    System Set Up 5.4 2-zone valve ON/OFF control Opening /closing 2-way valve provides a simple 2-Zone control. Flow temperature is common for Zone1 and 2. 1. Pipe work 1. Zone1 2-way valve 2a (local supply) Zone1 2. Zone2 2-way valve 2b (local supply) 3.

  • Page 22: Main Remote Controller Options

    1-zone temperature control Control option A Wireless receiver Wireless remote controller This option features the main remote controller and the Mitsubishi Electric wireless (option) (option) remote controller. The wireless remote controller is used to monitor room temperature and can be used to make changes to the space heating settings, boost DHW and 20.0°C...
  • Page 23 The thermostat is wired to IN6 on FTC. (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 remote controller, the Mitsubishi Electric thermistor and a locally supplied thermostat that are wired to FTC. Room temperature...

  • Page 24: Using Sd Memory Card

    (9) FTC 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 25: Main Remote Controller

    System Set Up 5.9 Main remote controller <Main remote 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 26 System Set Up Setting the Main remote controller After the power has been connected to the outdoor and cylinder units (See chapter 4.4) the initial system settings can be entered via the main remote controller. 1. Check all breakers and other safety devices are correctly installed and turn on power to the system. 2.
  • Page 27 System Set Up <Main Remote Controller Menu Tree> Unrestricted access Initial Installer only Main screen * Short press for 1 Zone system. Long press Information Option Forced DHW ON ( )/OFF ON ( )/Prohibited ( )/Timer ( ) Heating/Cooling ON ( )/Prohibited ( )/Timer ( ) Consumed electrical energy Menu Delivered energy...
  • Page 28 System Set Up <Continued from the previous page.> <Main Remote Controller Menu Tree> Unrestricted access Initial Installer only Main screen Long press Main Menu menu Manual operation Function settings Service Thermistor adjustment Password ON/OFF protected Economy settings for pump Delay <See section>...
  • Page 29 System Set Up Domestic Hot Water (DHW)/Legionella Prevention ►For further detail about operation, refer to Operation manual. Please note that LP mode uses the assistance of electric heaters (if present) to supplement the energy input of the heat pump. Heating water for long periods of time is not efficient and will increase running costs.
  • Page 30 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. The factory default password is "0000".
  • Page 31 System Set Up <Operation settings> Heating operation This function allows operational setting of flow temperature range from the Ecodan and also the time interval at which the FTC collects and processes data for the auto adaptation mode. Menu subtitle Function Range Unit Default...

  • Page 32: Commissioning

    System Set Up <Energy monitor settings> In this menu, all parameters required to record the consumed electrical energy and the delivered heat energy which is displayed on the main remote controller can be set. The parameters are an electric heater capacity, supply power of water pump and heat meter pulse.

  • Page 33: Service And Maintenance

    The indoor cylinder unit is UNVENTED. Servicing and maintenance of the out- tradesperson with the appropriate electrical qualifications. Any maintenance or door unit should only be done by a Mitsubishi Electric trained technician with ‘DIY’ fixes done by a non-accredited person could invalidate the Warranty and/or relevant qualifications and experience.
  • Page 34 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 35 Annual Maintenance It is essential that the cylinder unit is serviced at least once a year by a qualified individual. Any spare parts required should be purchased from Mitsubishi Electric. NEVER bypass safety devices or operate the unit without them being fully operational. For more details, refer to service handbook.
  • Page 36 Service and Maintenance Engineers Forms 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 Main remote controller screen Parameters...
  • Page 37 Service and Maintenance Engineers Forms Commissioning/Field settings record sheet (continued from the previous page) Default Field Main remote controller screen Parameters Notes setting setting Service menu Pump speed Pump speed(1 – 5) Heat source setting Standard/Heater/Boiler/Hybrid *7 Standard Operation Heating operation Flow temp.range Min.temp.(25 –...

  • Page 38: Supplementary Information

    *4 The “Hybrid” automatically switches heat sources between Heat pump (and Electric heater) and boiler. Product fiche of temperature control (a) Supplier's name: MITSUBISHI ELECTRIC CORPORATION (b) Supplier's model identifier: PAR-WT50R-E and PAR-WR51R-E (c) The class of the temperature control:...
  • Page 39 [Notes]...
  • Page 40 EC DECLARATION OF CONFORMITY DÉCLARATION DE CONFORMITÉ CE MITSUBISHI ELECTRIC AIR CONDITIONING SYSTEMS EUROPE LTD. NETTLEHILL ROAD, HOUSTOUN INDUSTRIAL ESTATE, LIVINGSTON, EH54 5EQ, SCOTLAND, UNITED KINGDOM hereby declares under its sole responsibility that the heating system components described below for use in residential, commercial and light-industrial environments: déclare par la présente et sous son entière responsabilité...
  • Page 41 Please be sure to put the contact address/telephone number on this manual before handing it to the customer. HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN RG79D943R01 Printed in the UNITED KINGDOM...

This manual is also suitable for:

Ecodan erst20d-vm2c2Ecodan ehpt20x-vm2c2

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