Page 1 Installer reference guide Daikin Altherma 3 H MT ECH₂O https://daikintechnicaldatahub.eu EPRA08EAV3 ETSH12P30EF EPRA10EAV3 ETSH12P50EF EPRA12EAV3 ETSHB12P30EF ETSHB12P50EF EPRA08EAW1 ETSX12P30EF EPRA10EAW1 ETSX12P50EF EPRA12EAW1 ETSXB12P30EF ETSXB12P50EF...
Page 2: Table Of Contents
Power limitation activated by digital inputs ....................62 6.6.3 Power limitation process..........................63 6.6.4 BBR16 power limitation..........................64 Setting up an external temperature sensor ........................64 7 Unit installation Installer reference guide EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 3 To connect the WLAN cartridge (delivered as accessory)................139 9.3.15 To connect the solar input ..........................140 9.3.16 To connect the DHW output .......................... 140 EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 4 Symptom: The pump is making noise (cavitation)..................254 14.3.7 Symptom: The pressure relief valve opens....................255 14.3.8 Symptom: The water pressure relief valve leaks................... 255 Installer reference guide EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 5 Wiring diagram: Indoor unit ............................280 16.6 ESP curve: Indoor unit..............................286 16.7 Name plate: Indoor unit ..............................286 17 Glossary 18 Field settings table EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 6: About The Documentation
Format: Paper (in the box of the indoor unit) ▪ User reference guide: Detailed step-by-step instructions and background information for basic and advanced usage Format: Digital files on https://www.daikin.eu. Use the search function find your model. ▪ Installation manual – Outdoor unit: Installation instructions Format: Paper (in the box of the outdoor unit) ▪...
Page 7: Meaning Of Warnings And Symbols
About the documentation Technical engineering data ▪ A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of latest technical data is available on the Daikin Business Portal (authentication required).
Page 8: Installer Reference Guide At A Glance
General safety precautions Safety instructions that you must read before installing Specific installer safety instructions About the box How to unpack the units and remove their accessories EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 9 Note: There is also an installer settings table in the user reference guide. This table has to be filled in by the installer and handed over to the user. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 10: General Safety Precautions
Improper installation or attachment of equipment or accessories could result in electrical shock, short-circuit, leaks, fire or other damage to the equipment. ONLY use accessories, optional equipment and spare parts made or approved by Daikin. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).
Page 11: Installation Site
WARNING During tests, NEVER pressurise the product with a pressure higher than the maximum allowable pressure (as indicated on the nameplate of the unit). EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 12 Charge the liquid refrigerant as follows: Then A siphon tube is present Charge with the cylinder upright. (i.e., the cylinder is marked with "Liquid filling siphon attached") EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 13: Water
If NOT factory installed, a main switch or other means for disconnection, having a contact separation in all poles providing full disconnection under overvoltage category III condition, MUST be installed in the fixed wiring. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 14 Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small head will damage the head and make proper tightening impossible. ▪ Over-tightening the terminal screws may break them. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 15 ON and OFF while the product is operating, attach a reversed phase protection circuit locally. Running the product in reversed phase can break the compressor and other parts. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 16: Specific Installer Safety Instructions
The appliance shall be stored so as to prevent mechanical damage and in a well- ventilated room without continuously operating ignition sources (example: open flames, an operating gas appliance or an operating electric heater). EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 17 Specific installer safety instructions WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation and are executed ONLY by authorised persons. Mounting the outdoor unit (see "7.3 Mounting the outdoor unit" [ 76]) WARNING Fixing method of the outdoor unit MUST be in accordance with the instructions from this manual.
Page 18 ▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply with the applicable legislation. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 19 This maximum allowable hot water temperature shall be selected according to the applicable legislation. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 20 If yes, make sure that the room where you want to purge air is sufficiently ventilated. Reason: Refrigerant might leak into the water circuit, and subsequently into the room when you purge air from the heat emitters or collectors. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 21: About The Box
To avoid injury, do NOT touch the air inlet or aluminium fins of the unit. Crane Keep the slings within the marked area to not damage the unit. Forklift or pallet truck Enter the pallet from the heavy side. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 22: To Unpack The Outdoor Unit
After unpacking, carry the unit using the slings attached to the unit. See also: ▪ "4.1.2 To unpack the outdoor unit" [ 22] ▪ "7.3.4 To install the outdoor unit" [ 77] ±120 4× 4.1.2 To unpack the outdoor unit EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 23: To Remove The Accessories From The Outdoor Unit
Installation manual – Outdoor unit g Disposal manual – Recovering refrigerant h Energy label i Discharge grille (upper + lower part) j Installation manual – Discharge grille EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 24: Indoor Unit
▪ Unpack the indoor unit completely according to the instructions mentioned on the unpacking instructions sheet. 4.2.1 To unpack the indoor unit EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 25: To Remove The Accessories From The Indoor Unit
The indoor unit is top-heavy as long as the storage tank is empty. Secure the unit accordingly and only transport by using the handles. If optional Backup Heater (EKECBU*) is installed, see the installation manual of the Backup Heater. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 26 3 Use the handles to carry the unit. 4 After carrying the unit remove the handles, add the screw plugs again and insert the thread covers on the plugs. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 27: About The Units And Options
Explanation European hydro-split outdoor pair heat pump High water temperature – ambient zone 2 (see operation range) Refrigerant R32 Capacity class Model series Power supply EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 28: Identification Label: Indoor Unit
Certain options may NOT be available in your country. 5.3.1 Possible combinations of indoor unit and outdoor unit Indoor unit Outdoor unit EPRA08 EPRA10 EPRA12 ETSH/X12 EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 29: Possible Options For The Outdoor Unit
As an option the remote indoor sensor can be installed to measure the room temperature on another location. For installation instructions, see the installation manual of the remote indoor sensor and addendum book for optional equipment. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 30 Alternatively (e.g. in case of weak signal strength), you can install the optional wireless LAN module BRP069A71. For installation instructions, see the installation manual of the WLAN module and the addendum book for optional equipment. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 31 You can install the fill and drain kit to simplify the filling and draining procedure of the storage tank. For installation instructions, see the installation manual of the fill and drain kit. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 32 A solar drainback kit including solar pump and solar controller can be directly connected to the pressureless storage tank of the indoor unit. For installation instructions, see the installation manual of the solar drainback kit. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 33: Application Guidelines
Setting up the storage tank ▪ Setting up the energy metering ▪ Setting up the power consumption control ▪ Setting up an external temperature sensor EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 34: Setting Up The Space Heating/Cooling System
Automatic. NOTICE An overpressure bypass valve can be integrated in the system. Keep in mind that this valve might not be shown on the illustrations. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 35: Single Room
For your daily needs, you can use preset values and schedules. To deviate from your daily needs, you can temporarily overrule the preset values and schedules, or use the holiday mode. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 36 Code: [C-05] heating or cooling demand. Benefits ▪ Wireless. The Daikin external room thermostat is available in a wireless version. ▪ Efficiency. Although the external room thermostat only sends ON/OFF signals, it is specifically designed for the heat pump system. ▪...
Page 37 ON/ ▪ #: [2.A] OFF condition. No separation between ▪ Code: [C-05] heating or cooling demand. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 38 ▪ The space operation mode is sent by one digital output (X12M/9 and X12M/10) on the indoor unit to: The heat pump convectors The shut-off valve EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 39: Multiple Rooms - One Lwt Zone
Human Comfort Interface (BRC1HHDA) or an external room thermostat), while the other rooms are controlled by so-called thermostatic valves, which open or close depending on the room temperature. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 40 Number of water temperature zones: 0 (Single zone): Main ▪ #: [4.4] ▪ Code: [7-02] Benefits ▪ Easy. Same installation as for one room, but with thermostatic valves. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 41 Compared with underfloor heating or radiators for one room: ▪ Comfort. You can set the desired room temperature, including schedules, for each room via the room thermostats. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 42 Code: [C-07] Number of water temperature zones: 0 (Single zone): Main ▪ #: [4.4] ▪ Code: [7-02] Benefits Compared with heat pump convectors for one room: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 43 INFORMATION To increase comfort and performance, we recommend to install the valve kit option EKVKHPC on each heat pump convector. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 44: Multiple Rooms - Two Lwt Zones
In cooling mode, you can allow the underfloor heating (main zone) to provide refreshment (no real cooling), or NOT allow it. See setup below. Setup Three bizone kit system variations are possible: System without hydraulic separator: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 45 D Main leaving water temperature zone E Room 3 a Heat pump convectors (+ controllers) b Dedicated Human Comfort Interface (BRC1HHDA used as room thermostat) EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 46 (X12M/19 and X12M/22). The indoor unit will only supply the desired additional leaving water temperature when there is an actual demand. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 47 If the main zone must be shut off during cooling mode to prevent condensation on the floor, set it accordingly. "Bizone kit" [ 228] for more information on configuration of the bizone kit. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 48: Setting Up Bivalent Heat Sources
OR ▪ external room thermostat control. ▪ Space heating can be done by: The indoor unit An auxiliary boiler (field supply) connected to the system EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 49 Make sure the auxiliary boiler and its integration in the system complies with applicable legislation. ▪ Daikin is NOT responsible for incorrect or unsafe situations in the auxiliary boiler system. ▪ Make sure the return water to the heat pump does NOT exceed 60°C. To do so: Set the desired water temperature via the auxiliary boiler controller to maximum 60°C.
Page 50 K1A Auxiliary relay for activation of indoor unit (field supply) K2A Auxiliary relay for activation of boiler (field supply) Indoor Indoor unit Auto Automatic Boiler Boiler EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 51: Setting Up An Indirect Auxiliary Heat Source For Domestic Hot Water And Space Heating
A Main leaving water temperature zone B One single room a Dedicated Human Comfort Interface (BRC1HHDA used as room thermostat) b Auxiliary boiler (field supply) EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 52: Setting Up A Solar System Via Drainback Connection
Make sure the auxiliary boiler and its integration in the system complies with applicable legislation. ▪ Daikin is NOT responsible for incorrect or unsafe situations in the auxiliary boiler system. ▪ Make sure the return water to the storage tank does NOT exceed 95°C. To do so: Set the desired water temperature via the auxiliary boiler controller to maximum 95°C.
Page 53: Setting Up A Solar System Via Bivalent Heat Exchanger
6.3.4 Setting up a solar system via bivalent heat exchanger Setup 1 Integrate the solar system as follows: a Bivalent heat exchanger IN (red) b Bivalent heat exchanger OUT (blue) EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 54: Setting Up An Electric Backup Heater
Determining the DHW consumption Answer the following questions and calculate the DHW consumption (equivalent hot water volume at 40°C) using typical water volumes: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 55 If energy prices are lower during the night, we recommend to heat up the storage tank during the night. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 56: Setup And Configuration - Storage Tank
For more information, see "10 Configuration" [ 142]. ▪ You can program a schedule to control the DHW pump via the user interface. For more information, see the user reference guide. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 57: Dhw Pump For Disinfection
You can read out the energy data: Per month Per year INFORMATION The calculated produced heat and consumed energy are an estimation, the accuracy cannot be guaranteed. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 58: Produced Heat
6.5.3 Normal kWh rate power supply General rule One power meter that covers the entire system is sufficient. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 59 The electrical meter cannot easily be installed in the electrical cabinet. 230 V and 400 V three-phase grids are combined (very uncommon), because of technical limitations of power meters. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 60: Preferential Kwh Rate Power Supply
Power meter (L d Power meter (L e Fuse (L f Fuse (L g Outdoor unit (L h Indoor unit (L i Backup heater (L EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 61: Setting Up The Power Consumption Control
Permanent power limitation is useful to assure a maximum power or current input of the system. In some countries, legislation limits the maximum power consumption for space heating and DHW production. Power input EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 62: Power Limitation Activated By Digital Inputs
6.6.2 Power limitation activated by digital inputs Power limitation is also useful in combination with an energy management system. The power or current of the entire Daikin system is limited dynamically by digital inputs (maximum four steps). Each power limitation level is set via the user interface by limiting one of the following: ▪...
Page 63: Power Limitation Process
Produced heat Consumed energy A Outdoor unit B Backup heater a Limited outdoor unit operation b Full outdoor unit operation c Backup heater step 1 turned ON EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 64: Bbr16 Power Limitation
You can connect one external temperature sensor. It measures the indoor or outdoor ambient temperature. We recommend to use an external temperature sensor in the following cases: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 65 To protect the outdoor unit, the internal sensor of the outdoor unit is always used. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 66: Unit Installation
Mind the spacing guidelines. See "16.1 Service space: Outdoor unit" [ 272]. NOTICE ▪ Do NOT stack the units on each other. ▪ Do NOT hang the unit on a ceiling. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 67 This is to prevent corrosion caused by high levels of salt in the air, which might shorten the life of the unit. Install the outdoor unit away from direct sea winds. Example: Behind the building. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 68 WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation and are executed ONLY by authorised persons. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O...
Page 69: Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates
Maximum height difference between indoor unit and outdoor 10 m unit Maximum total water piping length between indoor unit and 20 m (single outdoor unit when using 1" piping run) EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 70 Precise water piping length can be determined using the Hydronic Piping Calculation tool. The Hydronic Piping Calculation tool is part of the Heating Solutions Navigator which can be reached via https://professional.standbyme.daikin.eu. Please contact your dealer if you have no access to Heating Solutions Navigator.
Page 71: Opening And Closing The Units
The transportation stay protects the unit during transport. During installation it must be removed. a Transportation stay 1 Open the switch box cover. See "7.2.2 To open the outdoor unit" [ 71]. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 72: To Attach The Compressor Cover Piece
71]). 7.2.5 To close the outdoor unit NOTICE When closing the outdoor unit cover, make sure that the tightening torque does NOT exceed 4.1 N•m. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 73: To Open The Indoor Unit
1 Remove the user interface panel. Open the hinges at the top and slide the interface panel downwards. 2 Remove the switch box cover. NOTICE Do NOT damage or remove the foam sealing of the switch box. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 74: To Lower The Switch Box Of The Indoor Unit And Remove The Top Cover
Prerequisite: The user interface panel has been removed. 1 Loosen the screws. 2 Lift up the switch box. 2× 3 Lower the switch box. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 75 5 If necessary, remove the top cover. This is necessary in the following cases: ▪ Connecting water piping ▪ Connecting BIV or DB-kit ▪ Connecting backup heater EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 76: To Close The Indoor Unit
Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise. Fix the unit securely by means of foundation bolts in accordance with the foundation drawing. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 77: To Install The Outdoor Unit
Make sure not to cover the drain hole in the bottom plate of the unit. 7.3.4 To install the outdoor unit CAUTION To avoid injury, do NOT touch the air inlet or aluminium fins of the unit. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 78: To Provide Drainage
Make sure that condensation water can be evacuated properly. ▪ Install the unit on a base to make sure that there is proper drainage in order to avoid ice accumulation. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 79 Use the drain plug (with O-ring) and a hose for drainage. a Drain hole b O-ring (delivered as accessory) c Drain plug (delivered as accessory) d Hose (field supply) EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 80: To Install The Discharge Grille
4 Align and attach the left side. 5 Align and attach the middle part. 6 Align and attach the right side. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 81: To Remove The Discharge Grille, And Put The Grille In Safety Position
80] ▪ "7.3.7 To remove the discharge grille, and put the grille in safety position" [ 81] 1 Remove the upper part of the discharge grille. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 82 4 Align the ball stud and hook on the grille with their counterparts on the unit. 5 Insert the hook. 6 Insert the ball stud. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 83: To Prevent The Outdoor Unit From Falling Over
7.4 Mounting the indoor unit 7.4.1 About mounting the indoor unit Typical workflow Mounting the indoor unit typically consists of the following stages: Installing the indoor unit. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 84: Precautions When Mounting The Indoor Unit
Ensure that the water level cannot mount above the overspill. 6 Connect the drain pan hose to the drain pan connection and connect to an appropriate drain. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 85 Ensure that any steam or water that may escape is drained in a frost-protected, safe and observable manner. a Pressure relief valve EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 86: Piping Installation
Inappropriate tooling will cause damage to the pipes. ▪ Insulation. Insulate up to the base of the heat exchanger. ▪ Freeze. Protect against freezing. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 87 Water temperature. All installed piping and piping accessories (valve, connections,…) MUST withstand the following temperatures: INFORMATION The following figure is an example and may NOT completely match your system layout 89°C 75°C 75°C EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 88 See "6.4.4 DHW pump for instant hot water" [ 56]. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 89: To Check The Water Volume And Flow Rate
NOT be displayed on the user interface. In this case, the minimum flow rate can be checked by way of the pump test (check that the user interface does NOT display error 7H). EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 90: Connecting Water Piping
Deformation of the piping can cause malfunctioning of the unit. Outdoor unit 1 Connect the shut-off valve (with integrated filter) to the outdoor unit water inlet, using thread sealant. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 91 Do NOT exceed the maximum tightening torque (Thread size 1", 25-30 N•m). To avoid damage, apply the necessary countertorque with a suitable tool. ≤Ø7 mm EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 92 5 Connect the domestic hot water in and out pipes to the indoor unit. Do NOT exceed the maximum tightening torque (Thread size 1", 25-30 N•m). To avoid damage, apply the necessary countertorque with a suitable tool. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 93 7 Support the water piping. For rearward facing connections: Support hydraulic lines suitably according to the spatial conditions. This is valid for all water pipes. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 94 A pressure relief valve (field supply) with an opening pressure of maximum 10 bar (=1 MPa) must be installed on the domestic cold water inlet connection in accordance with the applicable legislation. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 95: To Connect A Pressure Vessel
1 Connect a hose with a non-return valve (1/2") and an external manometer (field supply) to a water tap and the fill and drain valve. Secure the hose against slipping off. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 96 8 Close the fill and drain valve and remove the hose with non-return valve only after air purging is performed and the system is completely filled. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 97: To Protect The Water Circuit Against Freezing
As a result, the hydraulic components might freeze up after all. Take preventive actions to ensure a minimal exposure of the glycol to air. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 98 When no glycol is added to the water, you can use freeze protection valves at all lowest points of the field piping to drain the water from the system before it can freeze. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 99 NOT insulate the inlet and outlet (release) of these valves. ▪ Do NOT make traps in the field piping. >10 cm >15 cm EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 100: To Fill The Heat Exchanger Inside The Storage Tank
Before the storage tank can be filled, the heat exchangers inside the storage tank have to be filled, see previous chapters. Fill the storage tank with a water pressure <6 bar and a flow speed <15 l/min. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 101 2 Connect the hose with non-return valve to the fill and drain kit. Follow the steps described in the previous chapter. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 102: To Insulate The Water Piping
The Hydronic Piping Calculation tool is part of the Heating Solutions Navigator which can be reached via https://professional.standbyme.daikin.eu. Please contact your dealer if you have no access to Heating Solutions Navigator. This recommendation ensures good operation of the unit, however, local regulations may differ and shall be followed.
Page 103: Electrical Installation
▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply with the applicable legislation. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 104: Guidelines When Connecting The Electrical Wiring
Stranded conductor wire b Round crimp-style terminal ▪ Use the following methods for installing wires: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 105: About Electrical Compliance
Equipment complying with EN/IEC 61000‑3‑12 (European/International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-voltage systems with input current >16 A and ≤75 A per phase.). EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 106: About Preferential Kwh Rate Power Supply
9.1.5 Overview of electrical connections except external actuators NOTICE Unlike to other indoor unit model types, Daikin Altherma 3 * ECH₂O always needs a dedicated power supply for the indoor unit. It is NOT possible to use the interconnection cable as power supply for the indoor unit.
Page 107: Connections To The Outdoor Unit
Drain tube heater cable Connection for power saving function (only for V3 models) Air thermistor cable "9.2.2 To reposition the air thermistor on the outdoor unit" [ 114]. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 108: To Connect The Electrical Wiring To The Outdoor Unit
▪ Connect the wires to the terminal block. ▪ Fix the cable with a cable tie. Wires: 1N+GND Maximum running current: Refer to name plate on unit. — EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 109 ▪ Connect the wires to the terminal block (make sure the numbers match with the numbers on the indoor unit) and the earth screw. ▪ Fix the cable with a cable tie. Wires: (3+GND)×1.5 mm² — EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 110 ▪ Fix the cable with cable ties. Wires: (2+GND)×0.75 mm². Wiring must be double insulated. Maximum power allowed for drain tube heater = 115 W (0.5 A) — EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 111 ▪ Connect the wires to the terminal block. ▪ Fix the cable with a cable tie. Wires: 3N+GND Maximum running current: Refer to name plate on unit. — EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 112 ▪ Connect the wires to the terminal block (make sure the numbers match with the numbers on the indoor unit) and the earth screw. ▪ Fix the cable with a cable tie. Wires: (3+GND)×1.5 mm² — EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 113 ▪ Fix the cable with cable ties. Wires: (2+GND)×0.75 mm². Wiring must be double insulated. Maximum power allowed for drain tube heater = 115 W (0.5 A) — EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 114: To Reposition The Air Thermistor On The Outdoor Unit
9.2.2 To reposition the air thermistor on the outdoor unit This procedure is only necessary in areas with low ambient temperatures. Required accessory (delivered with the unit): Thermistor fixture. Click EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 115: Connections To The Indoor Unit
For the main zone: ▪ [2.9] Control ▪ [2.A] Ext thermostat type For the additional zone: ▪ [3.A] Ext thermostat type ▪ [3.9] (read-only) Control EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 116 ▪ Installation manual of the remote indoor sensor ▪ Addendum book for optional equipment Wires: 2×0.75 mm² [9.B.1]=2 (External sensor = Room) [1.7] Room sensor offset EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 117: To Connect The Electrical Wiring To The Indoor Unit
To have easier access to the switch box itself and the routing of cables the switch box can be lowered (see "7.2.6 To open the indoor unit" [ 73]). EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 118 All cables which will be connected to the switch box of the ECH O must be fixed by strain relief. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 119: To Connect The Main Power Supply
2 Connect the main power supply. In case of normal kWh rate power supply Interconnection cable Wires: (3+GND)×1.5 mm² Power supply indoor Wires: 1N+GND unit Maximum running current: 6.3 A EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 120 Preferential kWh rate power supply contact: 16 V DC detection (voltage supplied by PCB). The voltage-free contact shall ensure the minimum applicable load of 15 V DC, 10 mA. [9.8] Benefit kWh power supply EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 121: To Connect The Backup Heater Power Supply
[9.3] Backup heater WARNING The backup heater MUST have a dedicated power supply and MUST be protected by the safety devices required by the applicable legislation. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 122 Z less than or equal to Z Connect the backup heater power supply as follows: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 123 1N~, 50 Hz 230 V AC Model (power supply) Connections to backup heater power supply *3V (3V: 1N~ 230 V) SWB2 Q1DI 1N~, 50 Hz 230 V AC EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 124: To Connect The Backup Heater To The Main Unit
1 Open the following (see "7.2.6 To open the indoor unit" [ 73]): 1 User interface panel 2 Switch box 3 Switch box cover 4 Top cover EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 125: To Connect The Shut-Off Valve
2 Connect the valve control cable to the appropriate terminals as shown in the illustration below. NOTICE Wiring is different for a NC (normally closed) valve and a NO (normally open) valve. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 126: To Connect The Electricity Meters
2 Switch box 3 Switch box cover 4 Top cover 2 Connect the electricity meters cable to the appropriate terminals as shown in the illustration below. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 127: To Connect The Domestic Hot Water Pump
3 Switch box cover 4 Top cover 2 Connect the domestic hot water pump cable to the appropriate terminals as shown in the illustration below. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 128: To Connect The Alarm Output
2 Switch box 3 Switch box cover 4 Top cover 2 Connect the alarm output cable to the appropriate terminals as shown in the illustration below. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 129: To Connect The Space Cooling/Heating On/Off Output
3 Switch box cover 4 Top cover 2 Connect the space cooling/heating ON/OFF output cable to the appropriate terminals as shown in the illustration below. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 130: To Connect The Changeover To External Heat Source
3 Switch box cover 4 Top cover 2 Connect the changeover to external heat source cable to the appropriate terminals as shown in the illustration below. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 131: To Connect The Power Consumption Digital Inputs
"7.2.6 To open the indoor unit" [ 73]): 1 User interface panel 2 Switch box 3 Switch box cover 4 Top cover 2 Install the switch box metal insert. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 132 4 Fix the cable with cable ties to the cable tie mountings. General information, "9.3.1 To connect the electrical wiring to the indoor unit" [ 117]. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 133: To Connect The Safety Thermostat (Normally Closed Contact)
X 5M 3 Fix the cable with cable ties to the cable tie mountings. General information, "9.3.1 To connect the electrical wiring to the indoor unit" [ 117]. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 134: To Connect A Smart Grid
([9.A.2] Electricity meter 2 = None) In case of low voltage Smart Grid contacts Wires (Smart Grid pulse meter): 0.5 mm² Wires (low voltage Smart Grid contacts): 0.5 mm² EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 135 2 Fix the cables with cable ties to the cable tie mountings. In case of high voltage Smart Grid contacts Wires (Smart Grid pulse meter): 0.5 mm² Wires (high voltage Smart Grid contacts): 1 mm² EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 136 1 Install the switch box metal insert. 2 Loosen the cables connected to the terminal of the Smart Grid relay kit (EKRELSG) and remove the terminal. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 137 Electrical installation 3 Install the components of the Smart Grid relay kit as follows: 2× 2× EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 138 X15M.6 4 Connect the low voltage wiring as follows: 9 10 X 5M.10 X 5M X 5M.9 5 Connect the high voltage wiring as follows: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 139: To Connect The Wlan Cartridge (Delivered As Accessory)
9.3.14 To connect the WLAN cartridge (delivered as accessory) [D] Wireless gateway 1 Insert the WLAN cartridge into the cartridge slot on the user interface of the indoor unit. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 140: To Connect The Solar Input
9.3.16 To connect the DHW output Wires: 2×0.75 mm² Maximum running current: 0.3 A, 230 V AC — 1 Open the following (see "7.2.6 To open the indoor unit" [ 73]): EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 141 0,3 A - 230 V AC 3 Fix the cable with cable ties to the cable tie mountings. General information, "9.3.1 To connect the electrical wiring to the indoor unit" [ 117]. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 142: Configuration
First time – Configuration wizard. When you turn ON the user interface for the first time (via the unit), the configuration wizard starts to help you configure the system. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 143: To Access The Most Used Commands
Confirm the pin code and proceed. Installer pin code The Installer pin code is 5678. Additional menu items and installer settings are now available. Installer 5678 EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 144 4 Turn the left dial to select the second part of the setting 01 15 5 Turn the right dial to modify the value from 15 to 20. 01 20 EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 145: To Connect The Pc Cable To The Switch Box
You can find a short overview of the settings in the configuration here. All the settings can also be adjusted in the settings menu (use the breadcrumbs). For the setting… Refer to… Language [7.1] Time/date [7.2] EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 146 Setpoint mode [2.4] Heating WD curve [2.5] (if applicable) Cooling WD curve [2.6] (if applicable) Schedule [2.1] WD curve type [2.E] Additional zone (only if [4.4]=1) EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 147: Possible Screens
Main menu screen c Lower level screens: c1: Setpoint screen c2: Detailed screen with values c3: Screen with weather-dependent curve c4: Screen with schedule EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 148: Home Screen
Smart energy is currently being used for domestic hot water. Space operation mode Cooling Heating Outdoor / quiet mode Measured outdoor temperature Quiet mode active Outdoor unit EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 149 Installed heat emitter type: Underfloor heating Fancoil unit Radiator Leaving water temperature setpoint EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 150: Main Menu Screen
Shows the applicable symbol of your unit. Space heating/ cooling Put the unit in heating mode or cooling mode. You cannot change the mode on heating only models. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 151: Menu Screen
The setpoint screen is displayed for screens describing system components that need a setpoint value. Examples [1] Room temperature screen [2] Main zone screen °C °C – – Room Main zone EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 152: Detailed Screen With Values
Selected setting and value Possible actions on this screen Go through the list of settings. Change the value. Go to the next setting. Confirm changes and proceed. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 153: Schedule Screen: Example
To clear the content of the week schedule 1 Select the name of the current schedule. User defined 1 2 Select Delete. Delete Rename Select 3 Select OK to confirm. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 154 In this example, Monday is the first day you programmed. Thus, the last programmed action is valid up to the first action of next Monday. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 155 5 Repeat this action for all other weekdays. — User defined 1 To program the schedule for Saturday and copy it to Sunday 1 Select Saturday. 2 Select Edit. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 156 The schedule name can contain up to 15 characters. 5 Confirm the new name. INFORMATION Not all schedules can be renamed. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 157: Weather-Dependent Curve
See "10.4.4 Using weather-dependent curves" [ 160]. 10.4.2 2-points curve Define the weather-dependent curve with these two setpoints: ▪ Setpoint (X1, Y2) ▪ Setpoint (X2, Y1) EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 158: Slope-Offset Curve
Examples Weather-dependent curve when slope is selected: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 159 The icon corresponds to the heat emitter for that zone: ▪ : Underfloor heating ▪ : Fan coil unit ▪ : Radiator ▪ : Storage tank EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 160: Using Weather-Dependent Curves
Go to … Main zone – Heating [2.5] Main zone > Heating WD curve Main zone – Cooling [2.6] Main zone > Cooling WD curve EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 161 ↑ Cold Cold ↑ ↑ ↑ ↑ Cold ↓ ↑ ↓ ↑ — ↓ — ↓ Cold ↑ ↓ ↑ ↓ ↓ ↓ ↓ ↓ EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 162: Settings Menu
No: Room temperature is directly controlled by the user. ▪ Yes: Room temperature is controlled by a schedule and can be modified by the user. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 163 Antifrost function via the backup heater. If the backup heater is not allowed for room frost protection during a U4 error, the room Antifrost setting MUST be disabled. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 164 Room frost protection is guaranteed by the normal logic. ▪ The external room thermostat is "Thermo ON" In case of 2 leaving water temperature zones: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 165 NOTICE When adjusting the room temperature ranges, all desired room temperatures are also adjusted to guarantee they are between the limits. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 166: Main Zone
[9-0A] Heating comfort setpoint ▪ [3-07]~[3-06]°C [1.9.2] [9-0B] Cooling comfort setpoint ▪ [3-09]~[3-08]°C 10.5.3 Main zone Overview The following items are listed in the submenu: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 167 Define a heating temperature schedule for the main zone via [2.2] Heating schedule. "10.3.7 Schedule screen: Example" [ 153]. Cooling schedule Define a cooling temperature schedule for the main zone via [2.3] Cooling schedule. "10.3.7 Schedule screen: Example" [ 153]. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 168 10°C. Heating WD curve Set weather-dependent heating for the main zone (if [2.4]=1 or 2): EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 169 Note: This value should be lower than [1‑02] as for high outdoor temperatures less warm water is required. Cooling WD curve Set weather-dependent cooling for the main zone (if [2.4]=2): EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 170 It is important to set Emitter type correctly and in accordance with your system layout. The target delta T for the main zone depends on it. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 171 Example underfloor heating: 40–5/2=37.5°C To compensate, you can: ▪ Increase the weather-dependent curve desired temperatures [2.5]. ▪ Enable leaving water temperature modulation and increase the maximum modulation [2.C]. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 172 Heating maximum: ▪ [2‑0C]=2 (emitter type main zone = radiator) 37°C~70°C ▪ Else: 37°C~55°C [2.8.3] [9-03] Cooling minimum: ▪ 5°C~18°C [2.8.4] [9-02] Cooling maximum: ▪ 18°C~22°C EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 173 Leaving water temperature: Delta T In heating for the main zone, the target delta T (temperature difference) depends on the selected emitter type for the main zone. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 174 Additionally, also the desired leaving water temperature must be configured: if Modulation is enabled, the unit automatically calculates the desired leaving water temperature. These calculations are based on: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 175 1 leaving water temperature zone, connect the shut-off valve to the heating/cooling output. The shut off valve for the main leaving water temperature zone can close under these circumstances: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 176: Additional Zone
▪ 1 Yes: closes when the space operation mode is cooling. 10.5.4 Additional zone Overview The following items are listed in the submenu: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 177 153]. Setpoint mode The setpoint mode of the additional zone can be independently set from the setpoint mode of the main zone. "Setpoint mode" [ 168]. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 178 Note: This value should be lower than [0‑01] as for high outdoor temperatures less warm water is required. Cooling WD curve Set weather-dependent cooling for the additional zone (if [3.4]=2): EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 179 [9‑05]~[9‑06] [1‑0C] 0: Underfloor Maximum 55°C Variable (see [3.B.1]) heating 1: Fancoil unit Maximum 55°C Variable (see [3.B.1]) 2: Radiator Maximum 70°C Fixed 10°C EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 180 (X12M/19) ▪ 2: 2 contacts. Connected to 2 digital inputs (X12M/20 and X12M/19) Leaving water temperature: Delta T For more information, see "10.5.3 Main zone" [ 166]. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 181: Space Heating/Cooling
[4.9] Pump outside range [4.A] Increase around 0°C [4.B] Overshoot [4.C] Antifrost About space operation modes Your unit can be a heating or a heating/cooling model: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 182 To restrict automatic changeover according to a schedule Conditions: You set the space operation mode to Automatic. 1 Go to [4.2]: Space heating/cooling > Operation mode schedule. 2 Select a month. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 183 Besides the desired heating/cooling room temperature, the installer sets a hysteresis value (e.g. when in heating, this EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 184 INFORMATION Mixing station. If your system layout contains 2 LWT zones, you need to install a mixing station in front of the main LWT zone. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 185 Make sure you set the emitter types for the main zone [2.7] and for the additional zone [3.7] correctly in accordance with the connected emitter. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 186 Sample is ONLY available in leaving water temperature control. a Space heating/cooling control b Off c On d LWT temperature e Actual f Desired g Pump operation EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 187 Possible values: see below. [4.8.2] [9-0D] Restriction: Only displayed when the bizone kit (EKMIKPOA or EKMIKPHA) is installed. Pump limitation Additional zone Possible values: see below. Possible values: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 188 The maximum values depend on the unit type: [9-0D]=0 [9-0D]=1/5 a (kPa) a (kPa) b (l/min) b (l/min) [9-0D]=2/6 [9-0D]=3/7 a (kPa) a (kPa) b (l/min) b (l/min) EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 189 0: No ▪ 1: increase 2°C, span 4°C ▪ 2: increase 4°C, span 4°C ▪ 3: increase 2°C, span 8°C ▪ 4: increase 4°C, span 8°C EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 190: Tank
If powerful operation is active, will be shown on the home screen. To activate powerful operation EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 191 The disinfection function settings MUST be configured by the installer according to the applicable legislation. Code Description [5.7.1] [2‑01] Activation: ▪ 0: No ▪ 1: Yes EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 192 Disinfection mode. Even if you turn OFF tank heating operation ([C.3]: Operation > Tank), disinfection mode will remain active. However, if you turn it OFF while disinfection is running, an AH error occurs. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 193 Code Description [5.9] [6-00] Heat pump ON hysteresis ▪ 2°C~40°C Setpoint mode Code Description [5.B] Setpoint mode: ▪ Fixed ▪ Weather dependent EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 194 Maximum heat pump temperature at sensor in storage tank HP MAX Heat pump OFF temperature (T −[6-01]) HP OFF HP MAX Heat pump ON temperature (T −[6-00]) HP ON HP OFF EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 195: User Settings
Tank [7.1] Language User settings [7.2] Time/date Information Installer settings [7.3] Holiday [7.4] Quiet [7.5] Electricity price [7.6] Gas price Language Code Description [7.1] Language EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 196 Confirm the changes. 3 Set the last day of your holiday. — ▪ Go to [7.3.3]: Till. ▪ Select a date. ▪ Confirm the changes. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 197 Then you can do the following: 1 Go to [7.4.1]: User settings > Quiet > Mode. 2 Select Most quiet. Advantage: The outdoor unit runs in its most quiet level. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 198 2 Program the selection using the scheduling screen. You can set — the High, Medium and Low electricity prices according to your electricity supplier. 3 Confirm the changes. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 199 Gas price=8.58 Calculation of the electricity price Electricity price=Actual electricity price+Incentive/kWh Electricity price=12.49+5 Electricity price=17.49 Price Value in breadcrumb Gas: 4.08 /kWh [7.6]=8.6 Electricity: 12.49 /kWh [7.5.1]=17 EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 200: Information
INFORMATION This does not reset the configuration settings and field settings of the indoor unit. Code Description [8.A] Reset the MMI EEPROM to factory default EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 201 Water volume flow rate [l/min] Possible read-out information In menu… You can read out… [8.1] Energy data Produced energy, consumed electricity, and consumed gas, energy flow diagram EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 202: Installer Settings
[8.B] Piping diagram Real-time sensor and actuator information of the main system components 10.5.9 Installer settings Overview The following items are listed in the submenu: EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 203 This setting is read only. Code Description [9.2.1] [E‑05] ▪ Integrated [E‑06] The backup heater will also be used for domestic hot water heating. [E‑07] EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 204 When measuring the resistance value of each heater, you can set the exact heater capacity and this will lead to more accurate energy data. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 205 If the storage temperature setpoint is higher than 50°C and no auxiliary boiler is installed, Daikin recommends NOT to disable the backup heater second step because it will have a big impact on the required time for the unit to heat up the storage tank.
Page 206 The backup heater will ONLY assist if you increase the equilibrium temperature [5‑01] to the required ambient temperature you need to reach the higher setpoint. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 207 Malfunctioning main menu screen. To keep energy consumption low, we recommend to set Emergency to auto SH reduced/DHW off if the house is unattended for longer periods. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 208 If NOT set correctly, the liquid in the piping can freeze. Code Description [E-0D] Glycol Filled system: Is the system filled with glycol? ▪ 0: No ▪ 1: Yes EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 209 1 Heat pump domestic water heating mode (1=active, 0=not active) 2 Hot water request for heat pump (1=request, 0=no request) t Time [8-04]: Additional timer at [4-02]/[F-01] EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 210 Range: 0~95 minutes Water pipe freeze prevention Only relevant for installations with water piping outdoors. This function tries to protect outdoor water piping from freezing. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 211 In case of room buffering, the room will heat up or cool down to the comfort setpoint. In case of tank buffering, the tank will heat up to the maximum tank temperature. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 212 Restriction: Only applicable if [9.8.4] is NOT set to Smart grid. Allow pump: ▪ 0 No: Pump is forced off ▪ 1 Yes: No limitation EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 213 See also below table (Smart Grid operation modes). [9.8.6] Restriction: Only applicable if [9.8.4]=Smart grid. To set if electrical heaters are allowed. Allow electrical heaters: ▪ ▪ EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 214 2 Inputs: Enabled: You can set up to four different power limitation values (in A or kW) to which the system power consumption will be limited when the corresponding digital input asks. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 215 Limits when [9.9.1]=Inputs and [9.9.2]=kW: Code Description [9.9.9] [5-09] Limit 1: 0 kW~20 kW [9.9.A] [5-0A] Limit 2: 0 kW~20 kW [9.9.B] [5-0B] Limit 3: 0 kW~20 kW [9.9.C] [5-0C] Limit 4: 0 kW~20 kW EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 216 (BBR16 activation and BBR16 power limit). After 2 weeks, the unit freezes these settings. Note: This is different from the permanent power limitation, which is always changeable. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 217 ▪ 0 None: NOT installed ▪ 1 1/10kWh: Installed ▪ 2 1/kWh: Installed ▪ 3 10/kWh: Installed ▪ 4 100/kWh: Installed ▪ 5 1000/kWh: Installed EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 218 The outdoor temperature is averaged over the selected time period. Code Description [9.B.3] [1-0A] Averaging time: ▪ 0: No averaging ▪ 1: 12 hours ▪ 2: 24 hours ▪ 3: 48 hours ▪ 4: 72 hours EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 219 (based on energy efficiency and operating temperatures) the auxiliary boiler provides heat for domestic hot water, while the heat pump continues to provide heat for the space heating circuit. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 220 Example COP = (Electricity price / gas price) × boiler efficiency ▪ Electricity price: 20 c€/kWh ▪ Gas price: 6 c€/kWh ▪ Boiler efficiency: 0.9 Then: COP=(20/6)×0.9=3 EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 221 Lower values of the PE factor result in increased use of the heat pump. Higher values of the PE factor result in increased use of the auxiliary boiler. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 222 Code Description [9.E] [3-00] Auto restart: ▪ 0: Manual ▪ 1: Automatic EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 223 1: Yes Forced defrost Forced defrost Manually start a defrost operation. Code Description [9.H] Do you want to start a defrost operation? ▪ Back ▪ EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 224 This energy can either be provided by a solar system or an auxiliary boiler connected to the storage tank. The latter is desirable, if the auxiliary heater EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 225 The tank free energy hysteresis defines the storage tank limit temperature, above which heat pump and boiler is stopped in case solar energy is provided and solar priority is active ([C‑00]=0). EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 226 1 No: The auxiliary boiler is too small to cover the building demand and is used solely as backup heat source. Therefore, the heat pump is the only available primary heat source. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 227 ▪ 1 No: Heat pump and boiler can operate also while solar energy is provided. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 228 Additional zone pump fixed PWM The speed of the additional zone pump can be fixed with this setting. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 229: Commissioning
234] 10.5.11 User profile [B] User profile: See "To change the user permission level" [ 143]. [B] User profile Installer settings Commissioning User profile Operation Malfunctioning EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 230: Operation
To configure the ONECTA app, follow the in-app instructions. While doing this, the following actions and information are needed on the user interface: Mode: Turn AP mode ON (= WLAN adapter active as access point) or OFF. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 231 Connected to [WLAN_SSID] Cloud connection: Read out the status of the connection to the cloud. Code Description [D.6] Cloud connection: ▪ Not connected ▪ Connected EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 232: Menu Structure: Overview User Settings
(**) Only accessible by installer (***) Only applicable when WLAN is installed INFORMATION Depending on the selected installer settings and unit type, settings will be visible/ invisible. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 233: Menu Structure: Overview Installer Settings
Mixing valve turning time (*) Only applicable in Swedish language. INFORMATION Depending on the selected installer settings and unit type, settings will be visible/ invisible. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 234: Commissioning
11 Commissioning NOTICE General commissioning checklist. Next to the commissioning instructions in this chapter, a general commissioning checklist is also available on the Daikin Business Portal (authentication required). The general commissioning checklist is complementary to the instructions in this chapter and can be used as a guideline and reporting template during commissioning and hand-over to the user.
Page 235: Precautions When Commissioning
There are NO loose connections or damaged electrical components in the switch box. There are NO damaged components or squeezed pipes on the inside of the indoor and outdoor units. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 236: Checklist During Commissioning
Check the function of the valve motor of M1S and M2S. Replace the valve motor if necessary. During pump test run, the unit can operate below the minimum required flow rate. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 237: Air Purge Function
Finally open the two manual air purging valves and check if the circuit is sufficiently filled with water. The air purge function automatically stops after 30 minutes. INFORMATION For best results, air purge each loop separately. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 238 Scroll to Pump speed and set it to Low/High. 7 To stop the air purge manually: — 1 Open the menu and go to Stop air purge. 2 Select OK to confirm. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 239: Operation Test Run
2 Select OK to confirm. INFORMATION If the outdoor temperature is outside the range of operation, the unit may NOT operate or may NOT deliver the required capacity. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 240: Actuator Test Run
▪ Shut off valve test ▪ DHW signal test ▪ Bivalent signal test ▪ Alarm output test EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 241: Underfloor Heating Screed Dryout
1 the duration in hours, up to 72 hours, 2 the desired leaving water temperature, up to 55°C. Example: 24h (1) 36h (2) 35°C (2) 25°C (1) EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 242 [D‑01]=0 ▪ [4‑08]=0 ▪ [4‑01]≠1 Steps Conditions: An underfloor heating screed dryout schedule has been programmed. "To program an underfloor heating screed dryout schedule" [ 241]. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 243 When the program is stopped due to an error, an operation switch-off, or a power failure, you can read out the underfloor heating screed dryout status: 1 Go to [A.4.3]: Commissioning > UFH screed dryout > Status EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 244: To Set Up Bivalent Heat Sources
[C-02] set to 0. HINT: If field code [C-02] is set to 0 and no backup heater is connected, error UA 17 is output at AL 3 * ECH2O. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 245: Hand-Over To The User
Show the user what to do for the maintenance of the unit. ▪ Explain the user about energy saving tips as described in the operation manual. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 246: Maintenance And Service
Before performing any maintenance or service work, touch a metal part of the unit in order to eliminate static electricity and to protect the PCB. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 247: Yearly Maintenance
Storage tank water level 13.3.4 Yearly maintenance indoor unit: instructions Water pressure – Space heating/cooling circuit Keep water pressure above 1 bar. If it is lower, add water. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 248 2 Switch box 2 Check if the red level indicator is visible. If NOT, add water to the storage tank (see "8.2.8 To fill the storage tank" [ 100]). EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 249 Maintenance and service EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 250: Troubleshooting
Carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring. 14.2 Precautions when troubleshooting DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 251: Solving Problems Based On Symptoms
In some cases, it is normal that the unit decides to use a low water flow. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 252: Symptom: Hot Water Does Not Reach The Desired Temperature
Forced off contact. If Forced off contact is On, the unit is operating under the preferential kWh rate. Wait for the power to return (maximum 2 hours). EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 253: Symptom: The System Is Making Gurgling Noises After Commissioning
If yes, make sure that the room where you want to purge air is sufficiently ventilated. Reason: Refrigerant might leak into the water circuit, and subsequently into the room when you purge air from the heat emitters or collectors. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 254: Symptom: The Pump Is Blocked
▪ The valve (if equipped) of the water circuit towards the expansion vessel is open. ▪ The pre-pressure setting of the expansion vessel is correct. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 255: Symptom: The Pressure Relief Valve Opens
The water pressure Whether there is air in the system The air purge operation EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 256: Symptom: Tank Disinfection Function Is Not Completed Correctly (Ah-Error)
(disinfection function). The disinfection operation was stopped Do NOT stop tank operation during manually: [C.3] Operation > Tank was disinfection. turned off during disinfection. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 257: Solving Problems Based On Error Codes
Water flow problem. Pump deblocking active 7H-08 Pump abnormality during operation (pump feedback) 80-01 Returning water temperature sensor problem 81-00 Leaving water temperature sensor problem 81-01 Mixed water thermistor abnormality. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 258 Heat exchanger thermistor abnormality CJ-02 Room temperature sensor problem E1-00 OU: PCB defect E2-00 Leakage current detection error E3-00 OU: Actuation of high pressure switch (HPS) EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 259 J6-07 OU: Malfunction of heat exchanger thermistor J6-32 Leaving water temperature thermistor Abnormality (outdoor unit) J6-33 Sensor communication error J6-36 OU: Malfunction of injection thermistor EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 260 Unknown USB device U8-05 File malfunction U8-06 MMI/bizone kit communication problem U8-07 P1P2 communication error U8-09 MMI software version {version_MMI_software} / Indoor unit [version_IU_modelname] compatibility error EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 261 If the software is not successfully updated then you must make sure that your USB device has the FAT32 format. INFORMATION The user interface will display how to reset an error code. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 262: Disposal
See: ▪ "7.3.6 To install the discharge grille" [ 80] ▪ "7.3.7 To remove the discharge grille, and put the grille in safety position" [ 81] EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 263: To Manually Open The Electronic Expansion Valves
3 Turn the EEV magnet anticlockwise to the fully open position of the valve. If you are not sure about what the open position is, turn the valve in its middle position so that refrigerant can pass. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 264: Recovery Mode - In Case Of 3N~ Models (7-Segments Display)
Display the current value. Press BS3 once. Change the value to 2. Press BS2 once. Enter the value in the system. Press BS3 once. Confirm. Press BS3 once. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 265 Result: The recovery mode is deactivated. The unit returns the electronic expansion valves to their initial state. INFORMATION Power OFF. When power is turned OFF and turned ON again, the recovery mode is deactivated automatically. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 266: Recovery Mode - In Case Of 1N~ Models (7-Leds Display)
= OFF, = ON, and = flashing. Result: The recovery mode is activated. The unit opens the electronic expansion valves. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 267: To Drain The Storage Tank
2 Unplug the spillover connector. a Spillover connector b Screw plug 3 Connect the loose end of the spillover drain hose to an appropriate drain. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 268 Fill and drain kit b Screw plug 4 Connect the loose end of the drain hose to an appropriate drain. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 269: To Drain The Storage Tank With A Connected Pressureless Solar System
2 Place an appropriate tray under the drain connection to collect water spillage. 3 Remove the clip and sealing plug. 4 Insert the fill and drain kit and secure with the clip. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 270 Sealing plug c Fill and drain kit 5 Open the valve of the fill and drain kit. 6 Switch the drain connection valve to standard position. EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 271: Technical Data
Technical data 16 Technical data A subset of the latest technical data is available on the regional Daikin website (publicly accessible). The full set of latest technical data is available on the Daikin Business Portal (authentication required). In this chapter 16.1...
Page 272: Service Space: Outdoor Unit
≥300 ≥100 ≥500 (mm) 3D124412 English Translation General General No top-side obstacle No top-side obstacle Top-side obstacle Top-side obstacle Wall height unrestricted Wall height unrestricted EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 273: Piping Diagram: Outdoor Unit
Y3E Electronic expansion valve (injection) Y1S Solenoid valve (4-way valve) Y2S Solenoid valve (low pressure bypass) Y3S Solenoid valve (hot gas bypass) Y4S Solenoid valve (liquid injection) Q1E Overload EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 274: Piping Diagram: Indoor Unit
R2T Thermistor (backup heater – water OUT) R5T, R8T Thermistor (tank) R7T Thermistor (tank - water OUT) S1L Flow switch Screw connection Flare connection Quick coupling Brazed connection EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 275: Wiring Diagram: Outdoor Unit
See note *** See note *** Only for *W1 models. Notes: Symbols: Live Neutral Protective earth Noiseless earth Field wiring Option Terminal strip Terminal Connector Connection EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 276 K1R (A1P) Magnetic relay (Y1S) K1R (A4P) Magnetic relay (E1HHEX) K2R (A1P) Magnetic relay (Y2S) K2R (A4P) Magnetic relay (E1H) K3R (A1P) Magnetic relay (Y3S) EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 277 Solenoid valve (4‑way valve) Solenoid valve (low pressure bypass) Solenoid valve (hot gas bypass) Solenoid valve (liquid injection) Z1C~Z11C Noise filter (ferrite core) Z1F~Z5F (A1P, A2P) Noise filter EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 278 Thermistor (compressor discharge) Thermistor (compressor suction) Thermistor (air heat exchanger, liquid pipe) Thermistor (air heat exchanger, middle) Thermistor (refrigerant liquid) Thermistor (injection) Thermistor (entering water) EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 279 Solenoid valve (4‑way valve) Solenoid valve (low pressure bypass) Solenoid valve (hot gas bypass) Solenoid valve (liquid injection) Z1C~Z11C Noise filter (ferrite core) Z1F~Z6F (A1P, A2P) Noise filter EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 280: Wiring Diagram: Indoor Unit
Safety thermostat Safety thermostat Main LWT Main leaving water temperature On/OFF thermostat (wired) On/OFF thermostat (wired) On/OFF thermostat (wireless) On/OFF thermostat (wireless) Ext. thermistor External thermistor EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 281 # Domestic hot water pump # 2-way valve for cooling mode PC (A15P) * Power circuit Thermal protector backup heater # Safety thermostat Q*DI # Earth leakage circuit breaker EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 282 Alarm output Alarm output BUH option Backup heater option BUH option only for * Backup heater option only for * Bizone mixing kit Bizone mixing kit EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 283 Space C/H On/OFF output Space cooling/heating On/OFF output SWB1 Switch box (4) Option PCBs (4) Option PCBs Only for demand PCB option Only for demand PCB option EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 284 Only for wireless On/OFF thermostat Only for wireless On/OFF thermostat (6) Backup heater power supply (6) Backup heater power supply Only for *** Only for *** SWB2 Switch box EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 285 Power limitation user interface A8P: X801M: 4-5 communication demand input 4 signal 2 core 2x0.75 Only for LAN adapter A13P: P1-P2 user interface communication 4D132247 B EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 286: Esp Curve: Indoor Unit
Operating pressure of storage water pH k Domestic hot water volume (heat exchanger) l Max. operating pressure PMS (drinking water installation) m Nominal voltage U EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 287 Technical data n Rated current of fuse o Protection type p Backup heater (optional) q Part number r Revision EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF Installer reference guide Daikin Altherma 3 H MT ECH₂O 4P663478-1B – 2022.07...
Page 288: Glossary
Optional equipment Equipment made or approved by Daikin that can be combined with the product according to the instructions in the accompanying documentation. Field supply Equipment NOT made by Daikin that can be combined with the product according to the instructions in the accompanying documentation.
Page 289: Field Settings Table
1/13 Field settings table Applicable indoor units ETSH12P30EF ETSH12P50EF ETSHB12P30EF ETSHB12P50EF ETSX12P30EF ETSX12P50EF ETSXB12P30EF ETSXB12P50EF Notes (*1) 300 Tank (*2) 500 Tank (*3) *X* (*4) *H* (*5) *B* (*6) EKECBUA3V (*7) EKECBUA6V (*8) EKECBUA9W (*9) BUH less 4P670987-1A - 2022.02...
Page 290 2/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value Room └─ Antifrost 1.4.1 [2-06] Activation 0: Disabled 1: Enabled 1.4.2 [2-05] Room setpoint 4~16°C, step: 1°C 8°C └─...
Page 291 3/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value 2.C.1 [8-05] Modulation 0: No 1: Yes 2.C.2 [8-06] Max modulation 0~10°C, step: 1°C 5°C └─ Shut off valve 2.D.1 [F-0B] During thermo...
Page 292 4/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [9-0D] Pump speed limitation 0~8, step:1 0: No limitation 1~4: 90~60% pump speed 5~8: 90~60% pump speed during sampling 6 80% pump speed during sampling Space heating / cooling...
Page 293 5/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value 9.1.3.4 [4-06] Emergency 0: Manual 1: Automatic 2: Auto red SH/ DHW ON 3: Auto red SH/ DHW OFF 4: Auto normal SH/ DHW OFF 9.1.3.5 [7-02]...
Page 294 6/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value 9.1.9 [0-01] Leaving water value for low ambient temp. for LWT add zone heating WD curve. [9-05]~[9-06]°C, step: 1°C [2-0C]=0: 35°C [2-0C]=1:...
Page 295 7/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value 9.6.3 [5-04] Offset BSH setpoint 0~20°C, step: 1°C 10°C 9.6.4 [8-02] Anti-recycle timer 0~10 hour, step: 0,5 hour 0,5 hour 9.6.5 [8-00]...
Page 296 8/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value 9.C.2 [7-05] Boiler efficiency 0: Very high 1: High 2: Medium 3: Low 4: Very low 9.C.3 [C-03] Temperature -25~25°C, step: 1°C 0°C...
Page 297 9/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [1-0A] What is the averaging time for the outdoor temp? 0: No averaging 1: 12 hours 2: 24 hours 3: 48 hours 4: 72 hours [1-0B]...
Page 298 10/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [4-08] Which power limitation mode is required on the system? 0: No limitation 1: Continuous 2: Digital inputs 3: Load Monitor [4-09] Which power limitation type is required?
Page 299 11/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [7-09] [7-0A] Additional zone fixed pump PWM, in case a bizone kit is installed. 20~95%, step 5% [7-0B] Main zone fixed pump PWM, in case a bizone kit is installed.
Page 300 12/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [C-07] What is the unit control method in space operation? 0: LWT control 1: Ext RT control 2: RT control [C-08] Which type of external sensor is installed? 0: No...
Page 301 13/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [E-0C] What bizone system type is installed? 0: Without hydraulic separator / no direct pump 1: With hydraulic separator / no direct pump 2: With hydraulic separator / with direct pump...
Page 304 4P663478-1B 2022.07 Verantwortung für Energie und Umwelt...

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