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Related Manuals for Mitsubishi Electric ecodan EHPT20X-MEHEW
Summary of Contents for Mitsubishi Electric ecodan EHPT20X-MEHEW
- Page 1 Cylinder unit EHPT20X-MEHEW English INSTALLATION MANUAL FOR INSTALLER...
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Page 2: Table Of Contents
For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing the Contents cylinder unit. English is the original language. The other language versions are translations of the original. 1. Safety Notices .................. 2 2. -
Page 3: Safety Notices
Safety relief valve connections must NOT be used for any other purpose. For UK model, NO valve should be fitted between the expansion valve and the storage cylinder. 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: Introduction
The purpose of this installation manual is to instruct competent persons how to safely and efficiently install and commission the cylinder unit system. The target readers of this manual are competent plumbers and/or refrigeration engineers who have attended and passed the requisite Mitsubishi Electric product training and have appropriate... -
Page 5: Technical Information
For the maximum outlet water of outdoor unit, refer to outdoor unit Data Book. *5 Do not fit immersion heaters without thermal cut-out. Use only Mitsubishi Electric service parts as a direct replacement. *6 Maximum temperature of E*****F model depending on the connected outdoor unit. PUZ: 70°C, Others: 60°C... - Page 6 Technical Information Technical Drawings <EHPT20X-MEHEW> (Packaged model system) <Unit: mm> 67.8 DHW OUTLET (G3/4) COLD WATER INLET (G3/4) RETURN TO HEAT PUMP CONNECTION (28mm pipe) SPACE HEATING FLOW CONNECTION (G1) 442.3 SPACE HEATING RETURN CONNECTION (G1) 515.7 Note: G1 and G3/4 means female nut connection. 542.3 ELECTRICAL CABLE INLETS <...
- Page 7 Technical Information Component Parts <EHPT20X-MEHEW> (Packaged model system) Note: For installation of EHPT20X-MEHEW model, make sure to install a suitably sized primary-side expansion vessel. (See figure 3.2 for further guidance) <Figure 3.1> <Figure 3.1> Part name Part name Part name DHW outlet pipe 14 Pump Elbow 35 Magnetic filter (Local supply) (Recommended)
- Page 8 Technical Information Water circuit diagram Go to the Mitsubishi Electric website to check the <EHPT20X-MEHEW> (UK model system) <Example> water circuit of other units and the component parts of each unit. *a Refer to the following section "Local system". *b If the outdoor unit is higher than the indoor...
- Page 9 Technical Information Local system 1-zone temperature control Zone 1 Zone 1 2-zone temperature control 1-zone temperature control with boiler Zone 1 Zone 1 Zone 2 2-zone temperature control & Buffer tank control 1-zone temperature control (2-zone valve ON/OFF control) Zone 1 Zone1 Zone 2 Zone2...
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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 The water quality must comply with European Directive (EU) 2020/2184 standards, and/or local national standards. heating/cooling circuit For example, in France : Arrêté du 11 Janvier 2007 relative aux limites et Additional required water amount [L]*1 références de qualité... -
Page 12: Water Pipe Work
Installation 4.3 Water Pipe Work Negative pressure prevention Hot Water Pipework To prevent negative pressure effecting DHW tank, installer should install appropriate pipework or use appropriate devices. The cylinder unit is UNVENTED. When installing unvented hot water sys- tems, building regulations part G3 (England and Wales), P3 (Scotland) and P5 (Northern Ireland) should be adhered to. - Page 13 Installation Sizing Expansion Vessels Expansion vessel volume must fit the local system water volume. To size an expansion vessel for the heating circuit, the following formula and Expansion vessel sizing 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 14 Installation Water Circulation Pump Characteristics 1. Primary circuit Outdoor heat pump unit Water flow rate Recommended Pump speed can be selected by main remote controller setting (see Figure 4.3.5). range [L/min] flow [L/min] *1 Adjust the pump speed setting so that the flow rate in the primary circuit is Packaged model PUZ-WZ50 6.5 - 14.3...
- 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. Safety Device Connections The expansion relief valve on the secondary hot water side, and the temperature and pressure (T&P) relief valve (*A), both need appropriate discharge pipework.
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Page 16: Safety Device Discharge Arrangements (G3)
Installation 4.4 Safety Device Discharge Arrangements (G3) i. Ideally below a fixed grating and above the water seal in a trapped gully. The following instructions are a requirement of UK Building Regulations ii. Downward discharges at low level; i.e. up to 100 mm above external surfaces and must be adhered to. -
Page 17: Electrical Connection
• On completion of wiring, ensure main remote controller cable is con- nected to the relay connector. Cylinder unit powered via outdoor unit (If you want to use independent source, go to the Mitsubishi Electric website.) PXZ model is not available. The model is cylinder unit powered by independent source ONLY. - Page 18 Installation <3 phase> Affix label A that is included with the manuals near each wiring diagram for cylinder unit and outdoor units. Cylinder unit Outdoor unit To control board Wiring Earth circuit leakage Power supply breaker circuit 3N~ 400 V 50 Hz breaker Isolating *1, *2...
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Page 19: System Set Up
System Set Up 5.1 DIP Switch Functions 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. To move the switch, you will need to use a pin or the corner of a thin metal ruler or similar. -
Page 20: Connecting Inputs/Outputs
System Set Up Default settings: DIP switch Function Indoor unit model SW7-1 Mixing valve setting Only Zone 2 Zone 1 and Zone 2 Forced cooling mode input (IN13) SW7-2 Active at short Active at open logic change Cooling limit temp. input (IN15) SW7-3 Active at short Active at open... - Page 21 System Set Up Signal inputs Name Terminal block Connector Item OFF (Open) ON (Short) TBI.1 7-8 — Room thermostat 1 input *1 Refer to SW2-1 in <5.1 DIP Switch Functions>. TBI.1 5-6 — Flow switch 1 input Refer to SW2-2 in <5.1 DIP Switch Functions>. TBI.1 3-4 —...
- Page 22 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) 230 V AC 1.0 A Max. (Inrush current 40 A Max.) OUT2 TBO.1 3-4 Water circulation pump 2 output (Space heating/cooling for Zone 1) 230 V AC 1.0 A Max.
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Page 23: Wiring For 2-Zone Temperature Control
System Set Up 5.3 Wiring for 2-zone temperature control Connect the pipe work and locally supplied parts according to the relevant circuit diagram shown in “Local system” in Section 3, of this manual. <Mixing valve> to Zone from mixing heat emitter tank •... - Page 24 System Set Up Pump setting selection You can check the setting by pressing the push button. If you press the button for 2 to 10 seconds, the user interface switches to “setting selection” if the user interface is unlocked. You can change the settings as below table. LED1 LED2 LED3...
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Page 25: Indoor Unit Only Operation (During Installation Work)
System Set Up 5.4 Indoor unit only operation (during installation work) In the case when DHW or heating operation is required prior to connection of the 2. To end operation*2 outdoor unit; i.e. during installation work, an electric heater in indoor unit (*1) can be ●... -
Page 26: Using Microsd Memory Card
(8) FTC supports FAT12/FAT16/FAT32 file system but not NTFS/exFAT file system. (9) Mitsubishi Electric is not liable for any damages, in whole or in part, including failure of writing to a microSD memory card, and corruption and loss of the saved data, or the like. -
Page 27: En 6. Remote Controller
To change the settings of your heating/cooling system, please use the main remote controller located on the wall or the front panel of the cylinder unit or hydrobox. The fol- lowing is a guide to viewing the main settings. Should you require more information, please contact your installer or local Mitsubishi Electric dealer. Some functions are not available depending on the system confi... - Page 28 Remote Controller Quick start When the main remote controller is switched on for the fi rst time, the screen automatically goes to the [Language], [Date/Time], [System confi guration], and quick start set- ting screen in order. On the quick start setting screen, the following items can be set. Note: [Electric booster heater use] This setting restricts the booster heater capacity.
- Page 29 Remote Controller <Main Controller Menu Tree> When the system is started up for the fi rst time, the quick start setting screen appears. [Home screen] The items with an asterisk (*) cannot be edited when the lock menu is on. (The icon changes to when the lock menu is on.) [Heating /Cooling]...
- Page 30 Remote Controller Continued from the previous page. When the system is started up for the fi rst time, the quick start <Main Controller Menu Tree> setting screen appears. [Home screen] The items with an asterisk (*) cannot be edited when the lock menu is on.
- Page 31 Remote Controller Continued from the previous page. When the system is started up for the fi rst time, the quick start setting screen appears. <Main Controller Menu Tree> • Note: The items with an asterisk (*) cannot be edited when the lock menu is on. (The icon State description indicated by toggle changes to when the lock menu is on.)
- Page 32 Remote Controller Menu subtitle Function Range Unit Default value DHW target temp. Desired temperature of stored hot water 40 - 70*1 °C [Max. temp. drop] Diff erence in temperature between the DHW maximum temperature and the temperature at which DHW 5 - 40*2 °C mode restarts...
- Page 33 Remote Controller Menu subtitle Description [Zone sensor selection] When 2-zone temperature control is active and wireless remote controllers are available, select [Zone sensor selection] in [Room sensors] from [Setting], and then select zone No. (Zone 1/Zone 2) to assign each remote controller. [Zone 1 programme] From [Zone 1 programme] or [Zone 2 programme], select a wireless remote controller to be used for monitoring the room temperature from [Zone 2 programme]...
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Page 34: Commissioning
Remote Controller Functions Symbol Description Option/Range Unit Default [Floor dry up function] Set the function to on and power on the system using the main remote con- on/off — off troller, and the dry up heating operation will start. [Flow temperature [Temperature increase step] It sets the increase step of the target fl... -
Page 35: Service And Maintenance
Service and Maintenance The indoor unit must be serviced once a year by a qualifi ed individual. Service and maintenance of the outdoor unit should only be done by a Mitsubishi Electric trained technician with relevant qualifi cations and experience. Any electrical work should be done by a personnel with the appropriate electrical qualifi cations. Any maintenance or ‘DIY’... - Page 36 Annual Maintenance (cylinder unit and hydrobox) It is essential that the indoor unit is serviced at least once a year by a qualifi ed individual. Any required parts 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 37 Service and Maintenance <Draining dirt from the mud trap (ONLY Cylinder unit: ERST17D-*M*BE)> Note: DRAINED WATER MAY BE VERY HOT 1. Turn OFF the unit via the user interface. 2. Turn OFF the circuit breaker. 3. Check if upper and lower parts of the mud trap are still screwed tight (a, c). 4.
- Page 38 Service and Maintenance Engineers Forms Should settings be changed from default, please enter and record new setting in ‘Commissioning/Field settings record sheet’ below. 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 Field Main remote controller screen...
- Page 39 Service and Maintenance Engineers Forms Commissioning/Field settings record sheet Field Main remote controller screen Parameters Default setting Notes setting Menu Service Thermistor adjustment THW1 −10°C to +10°C 0°C THW2 −10°C to +10°C 0°C THW5B −10°C to +10°C 0°C THW6 −10°C to +10°C 0°C THW7 −10°C to +10°C...
- Page 40 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 Menu Service Operation Smart grid ready On/Off Off settings Target temp. (+1 to +30°C) / -- (Non active) Heating On/Off...
- Page 41 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 Menu Service Energy Electric heater Booster heater 1 0 to 30 kW 2 kW monitor capacity Booster heater 2 0 to 30 kW 4 kW...
- Page 43 EÚ VYHLÁSENIE O ZHODE EU IZJAVA O USAGLAŠENOSTI 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 air conditioner(s) and heat pump(s) for use in residential, commercial, and light-industrial environments described below: erklärt hiermit auf seine alleinige Verantwortung, dass die Klimaanlage(n) und Wärmepumpe(n) für das häusliche, kommerzielle und leichtindustrielle Umfeld wie unten beschrieben:...
- Page 44 UK DECLARATION OF CONFORMITY 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 air conditioner(s) and heat pump(s) for use in residential, commercial, and light-industrial environments described below:...
- Page 45 This product is designed and intended for use in the residential, commercial and light-industrial environment. Importer: Mitsubishi Electric Europe B.V. Capronilaan 34, 1119 NS, Schiphol Rijk, The Netherlands French Branch 2, Rue De L’Union, 92565 RUEIL MAISON Cedex German Branch...
- Page 46 HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Printed in the UNITED KINGDOM DG79T791H02...