Page 1 Installer reference guide Daikin Altherma 3 H HT ECH₂O https://daikintechnicaldatahub.eu ▲= 1, 2, 3, …, 9, A, B, C, …, Z EPRA14D▲V3▼ ▼= , , 1, 2, 3, …, 9 EPRA16D▲V3▼ EPRA18D▲V3▼ EPRA14D▲W1▼ EPRA16D▲W1▼ EPRA18D▲W1▼ ETSH16P50E▲▼ ETSHB16P50E▲▼ ETSX16P50E▲▼ ETSXB16P50E▲▼...
Page 2 6.6.2 Power limitation activated by digital inputs....................6.6.3 Power limitation process ..........................6.6.4 BBR16 power limitation..........................Setting up an external temperature sensor........................7 Unit installation Installer reference guide EPRA14~18D + ETSH/X(B)16P50E Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 3 To connect the WLAN cartridge (delivered as accessory) ................143 9.3.15 To connect the solar input..........................144 9.3.16 To connect the DHW output ......................... 144 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 4 Symptom: The pump is making noise (cavitation)..................260 14.3.7 Symptom: The pressure relief valve opens ....................260 14.3.8 Symptom: The water pressure relief valve leaks ..................261 Installer reference guide EPRA14~18D + ETSH/X(B)16P50E Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 5 16.5 Wiring diagram: Indoor unit............................288 16.6 ESP curve: Indoor unit ..............................294 16.7 Name plate: Indoor unit..............................295 17 Glossary 18 Field settings table EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 6 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 A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of the latest technical data is available on the Daikin Business Portal (authentication required). Online tools In addition to the documentation set, some online tools are available for installers: ▪...
Page 8 About the units and options ▪ How to identify the units ▪ Possible combinations of units and options Application guidelines Various installation setups of the system EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 10 WARNING 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 unless otherwise specified. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).
Page 11 ▪ Use a separate recovery system so that the unit's compressor does NOT have to operate. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 12 ONLY use tools exclusively for the refrigerant type used in the system, this to ensure pressure resistance and prevent foreign materials from entering into the system. ▪ Charge the liquid refrigerant as follows: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 13 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 16 WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation (for example national gas regulation) and are executed ONLY by authorised persons. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O...
Page 17 86]. Piping installation (see "8 Piping installation" [ 89]) WARNING Field piping MUST be in accordance with the instructions from this manual. See "8 Piping installation" [ 89]. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 18 ▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply with the applicable legislation. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 19 This maximum allowable hot water temperature shall be selected according to the applicable legislation. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 20 MUST NOT be supplied through an external switching device, such as a timer, or connected to a circuit that is regularly turned ON and OFF by the utility. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 21 "7.3.7 To remove the discharge grille, and put the grille in safety position" [ 84] DANGER: RISK OF BURNING/SCALDING The water in the storage tank and all the connected piping can be very hot. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 22 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 23 After unpacking, carry the unit using the slings attached to the unit. See also: ▪ "4.1.2 To unpack the outdoor unit" [ 23] ▪ "7.3.4 To install the outdoor unit" [ 81] ±150 4× 4.1.2 To unpack the outdoor unit EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 24 Compressor cover piece f Installation manual – Outdoor unit g Energy label h Discharge grille (upper + lower part) i Installation manual – Discharge grille EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 25 (see "7.2.6 To open the indoor unit" [ 75]). 4.2.1 To unpack the indoor unit EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 26 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 27 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 28 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 29 Model series 5.3 Combining units and options INFORMATION Certain options may NOT be available in your country. 5.3.1 Possible combinations of indoor unit and outdoor unit EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 30 To enable the power saving consumption control by digital inputs you MUST install the demand PCB. For installation instructions, see the installation manual of the demand PCB and addendum book for optional equipment. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 31 You can install this LAN adapter to control the system via a smartphone app. For installation instructions, see the installation manual of the LAN adapter and the addendum book for optional equipment. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 32 BIV connector kit (EKECBIVCO*) To make the connection of a bivalent heat source to the bivalent heat exchanger easier, you can install a bivalent connector kit. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 33 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 34 Setting up the storage tank ▪ Setting up the energy metering ▪ Setting up the power consumption control ▪ Setting up an external temperature sensor EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 35 NOTICE A differential pressure bypass valve can be integrated in the system. Keep in mind that this valve might not be shown on the illustrations. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 36 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 37 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 38 ON/ ▪ #: [2.A] OFF condition. No separation between ▪ Code: [C-05] heating or cooling demand. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 39 ▪ 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 40 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 41 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 42 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 43 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: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 44 INFORMATION To increase comfort and performance, we recommend to install the valve kit option EKVKHPC on each heat pump convector. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 45 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: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 46 A Additional leaving water temperature zone B Room 1 C Room 2 D Main leaving water temperature zone E Room 3 a Heat pump convectors (+ controllers) EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 47 (X12M/19 and X12M/22). The indoor unit will only supply the desired additional leaving water temperature when there is an actual demand. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 48 If the main zone must be shut off during cooling mode to prevent condensation on the floor, set it accordingly. "Bizone kit" [ 233] for more information on configuration of the bizone kit. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 49 OR ▪ external room thermostat control. ▪ Space heating can be done by: The indoor unit An auxiliary boiler (field supply) connected to the system EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 50 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 51 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 52 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) EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 53 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 54 230] for more information on configuration. 6.3.4 Setting up a solar system via bivalent heat exchanger Setup 1 Integrate the solar system as follows: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 55 Configuration Via the user interface (configuration wizard): ▪ Set the backup heater voltage ▪ Set the capacity steps, if applicable EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 56 Example: If the DHW consumption of a family (4 persons) per day is as follows: ▪ 3 showers ▪ 1 bath ▪ 3 sink volumes Then the DHW consumption = (3×100 l)+(1×150 l)+(3×10 l)=480 l EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 57 Bivalent heat source, see "6.3 Setting up bivalent heat sources" [ 49] ▪ For more information about optimizing the energy consumption for producing domestic hot water, see "10 Configuration" [ 146]. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 58 The DHW pump is field-supplied and its installation is the responsibility of the installer. For the electrical wiring, see "9.3.7 To connect the domestic hot water pump" [ 131]. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 59 The produced heat is calculated internally based on: The leaving and entering water temperature The flow rate ▪ Setup and configuration: No additional equipment needed. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 60 Backup heater supplied from a single- (*3V, *6V (6V): 1N~ 230 V) phase grid (i.e. the backup heater model is *3V or *6V connected to a single-phase grid) EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 61 NOT have to set which meter covers which power consumption. You only need to set the number of pulses of each power meter. ▪ "6.5.4 Preferential kWh rate power supply" [ 62] for an example with two power meters. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 62 6.6 Setting up the power consumption control You can use the following power consumption controls. For more information about the corresponding settings, see "Power consumption control" [ 219]. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 63 DHW production. Power input t Time DI Digital input (power limitation level) a Power limitation active b Actual power input EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 64 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 65 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 66 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: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 67 To protect the outdoor unit, the internal sensor of the outdoor unit is always used. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 68 Mind the spacing guidelines. See "16.1 Service space: Outdoor unit" [ 278]. NOTICE ▪ Do NOT stack the units on each other. ▪ Do NOT hang the unit on a ceiling. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 69 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 70 WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation (for example national gas regulation) and are executed ONLY by authorised persons. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O...
Page 71 Install the indoor unit at a minimum distance of 1 m from other heat sources (>80°C) (e.g. electrical heater, oil heater, chimney) and combustible materials. Otherwise the unit may be damaged or in extreme cases catch fire. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 72 The 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. Contact your dealer if you have no access to the Heating Solutions Navigator.
Page 73 The transportation stays protect the unit during transport. During installation they must be removed. a Transportation stays (2×) and washers (2×) EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 74 74]). 5 Remove and discard the transportation stay (b). 7.2.4 To attach the compressor cover piece Required accessory (delivered with the unit): Compressor cover piece EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 75 3× 7.2.6 To open the indoor unit Overview 1 User interface panel 2 Switch box 3 Switch box cover 4 Top cover 5 Side panel EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 76 Prerequisite: The user interface panel has been removed. 1 Loosen the screws. 2 Lift up the switch box. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 77 1 Open the locking parts of the side panels with a screw driver. 2 Lift up the side panels. 3 Lift the top cover out of its mounting using the two front legs. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 78 9 Put the switch box back into place. 10 Close the user interface panel. NOTICE When closing the indoor unit, make sure that the tightening torque does NOT exceed 4.1 N•m. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 79 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 80 "7.3.7 To remove the discharge grille, and put the grille in safety position" [ 84]. 4× M12 (mm) a Make sure not to cover the drain hole in the bottom plate of the unit. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 81 1 Carry the unit by its slings, and put it onto the installation structure. ±150 4× 2 Fix the unit to the installation structure. 4× M12 3 Remove the slings (and screws), and dispose of them. 4× EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 82 Provide at least 150 mm of free space below the unit. Additionally, make sure the unit is positioned at least 100 mm above the expected level of snow. Use the drain plug (with O-ring) and a hose for drainage. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 83 4 Align and attach the left side. 5 Align and attach the middle part. 6 Align and attach the right side. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 84 83] ▪ "7.3.7 To remove the discharge grille, and put the grille in safety position" [ 84] 1 Remove the upper part of the discharge grille. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 85 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 86 Spillover water from the water storage tank as well as water collecting in the drain pan must be drained. You must connect the drain hoses to an appropriate drain according to the applicable legislation. 1 Open the screw plug. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 87 7 Connect the pressure relief valve to an appropriate drain in accordance with the applicable legislation. Ensure that any steam or water that may escape is drained in a frost-protected, safe and observable manner. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 88 Unit installation a Pressure relief valve EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 89 Inappropriate tooling will cause damage to the pipes. ▪ Insulation. Insulate up to the base of the heat exchanger. ▪ Freeze. Protect against freezing. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 90 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 91 Circulation stop valves. We recommend to use circulation stop valves at the connections of the heat exchanger for domestic hot water. This minimizes heat losses due to temperature-induced circulation in the connecting pipes. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 92 When circulation in each space heating/cooling loop is controlled by remotely controlled valves, it is important that the minimum water volume is guaranteed, even if all of the valves are closed. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 93 243]. 8.2 Connecting water piping 8.2.1 About connecting the water piping Before connecting the water piping Make sure the outdoor and indoor unit are mounted. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 94 1") d Thread sealant 2 Connect the field piping to the shut-off valve. 3 Connect the field piping to the outdoor unit water outlet. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 95 ONLY remove parts in the order and direction as indicated here, ▪ do NOT use force, ▪ do NOT use tools, ▪ re-install the thermal insulation in reverse order. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 96 6 Support the water piping. For rearward facing connections: Support hydraulic lines suitably according to the spatial conditions. This is valid for all water pipes. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 97 To avoid damage to the surroundings in case of water leakage, it is recommended to close the domestic cold water inlet shut‑off valves during periods of absence. NOTICE Install air purge valves at all local high points. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 98 ▪ After the first filling and before switching on the unit with the mains switch, check whether all electric parts and connection points are dry. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 99 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 100 On top of that, they also contain silicates that can foul or plug the system. ▪ Do NOT use galvanised pipes in glycol systems because they provoke certain components in the glycol's corrosion inhibitor to precipitate. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 101 If glycol is present in the system, setting [E-0D] must be set to 1. If the glycol setting is NOT set correctly, the liquid inside the piping can freeze. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 102 NOT insulate the inlet and outlet (release) of these valves. ▪ Do NOT make traps in the field piping. >10 cm >15 cm EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 103 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 104 2 Connect the hose with non-return valve to the fill and drain kit. Follow the steps described in the previous chapter. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 105 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 106 ▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply with the applicable legislation. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 107 To prepare stranded conductor wire for installation Method 1: Twisting conductor 1 Strip insulation (20 mm) from the wires. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 108 Screw c Flat washer Stranded conductor wire with round crimp-style terminal a Terminal b Screw c Flat washer Allowed NOT allowed Tightening torques Outdoor unit: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 109 OFF mode. At that moment, the outdoor unit compressor will NOT operate. The wiring to the unit is different depending on whether the power supply is interrupted or NOT. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 110 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 111 1 Open the switch box cover. See "7.2.2 To open the outdoor unit" [ 73]. 2 Strip insulation (20 mm) from the wires. a Strip wire end to this point EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 112 ▪ 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. — EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 113 ▪ 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 — EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 114 ▪ 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) — EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 115 ▪ 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. — EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 116 ▪ 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 — EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 117 ▪ 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) — EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 118 9.2.3 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 119 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 120 ▪ 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 121 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" [ 75]). EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 122 All cables which will be connected to the switch box of the ECH O must be fixed by strain relief. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 123 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 124 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 125 [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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 126 Z less than or equal to Z Connect the backup heater power supply as follows: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 127 Electrical installation Model (power supply) Connections to backup heater power supply *3V (3V: 1N~ 230 V) SWB2 Q1DI 1N~, 50 Hz 230 V AC EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 128 1 Open the following (see "7.2.6 To open the indoor unit" [ 75]): 1 User interface panel 2 Switch box 3 Switch box cover 4 Top cover 5 Side panel EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 129 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 130 3 Switch box cover 4 Top cover 5 Side panel 2 Connect the electricity meters cable to the appropriate terminals as shown in the illustration below. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 131 3 Switch box cover 4 Top cover 5 Side panel 2 Connect the domestic hot water pump cable to the appropriate terminals as shown in the illustration below. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 132 3 Switch box cover 4 Top cover 5 Side panel 2 Connect the alarm output cable to the appropriate terminals as shown in the illustration below. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 133 3 Switch box cover 4 Top cover 5 Side panel 2 Connect the space cooling/heating ON/OFF output cable to the appropriate terminals as shown in the illustration below. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 134 4 Top cover 5 Side panel 2 Connect the changeover to external heat source cable to the appropriate terminals as shown in the illustration below. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 135 75]): 1 User interface panel 2 Switch box 3 Switch box cover 4 Top cover 5 Side panel 2 Install the switch box metal insert. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 136 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" [ 121]. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 137 X15M 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" [ 121]. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 138 ([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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 139 X15M.3 X15M.10 3 4 5 6 9 10 X15M.9 X15M X15M.6 S11S X15M.5 3 Fix the cables with cable ties to the cable tie mountings. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 140 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 141 Electrical installation 3 Install the components of the Smart Grid relay kit as follows: 2× 2× EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 142 X12M.25 X12M.24 X15M.5 X15M.6 4 Connect the low voltage wiring as follows: X15M.10 X15M.9 9 10 X15M 5 Connect the high voltage wiring as follows: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 143 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 144 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" [ 75]): EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 145 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" [ 121]. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 146 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 147 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 148 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 149 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). EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 150 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) EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 151 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 152 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 153 Installed heat emitter type: Underfloor heating Fancoil unit Radiator Leaving water temperature setpoint EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 154 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 155 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 156 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 157 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 158 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 159 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 160 The schedule name can contain up to 15 characters. 5 Confirm the new name. INFORMATION Not all schedules can be renamed. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 161 See "10.4.4 Using weather-dependent curves" [ 164]. 10.4.2 2-points curve Define the weather-dependent curve with these two setpoints: ▪ Setpoint (X1, Y2) ▪ Setpoint (X2, Y1) EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 162 Examples Weather-dependent curve when slope is selected: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 163 The icon corresponds to the heat emitter for that zone: ▪ : Underfloor heating ▪ : Fan coil unit ▪ : Radiator ▪ : Storage tank EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 164 Go to … Main zone – Heating [2.5] Main zone > Heating WD curve Main zone – Cooling [2.6] Main zone > Cooling WD curve EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 165 ↑ Cold Cold ↑ ↑ ↑ ↑ Cold ↓ ↑ ↓ ↑ — ↓ — ↓ Cold ↑ ↓ ↑ ↓ ↓ ↓ ↓ ↓ EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 166 No: Room temperature is directly controlled by the user. ▪ Yes: Room temperature is controlled by a schedule and can be modified by the user. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 167 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 168 Room frost protection is guaranteed by the normal logic. ▪ The external room thermostat is "Thermo ON" In case of 2 leaving water temperature zones: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 169 NOTICE When adjusting the room temperature ranges, all desired room temperatures are also adjusted to guarantee they are between the limits. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 170 [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: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 171 Define a heating temperature schedule for the main zone via [2.2] Heating schedule. "10.3.7 Schedule screen: Example" [ 157]. Cooling schedule Define a cooling temperature schedule for the main zone via [2.3] Cooling schedule. "10.3.7 Schedule screen: Example" [ 157]. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 172 10°C. Heating WD curve Set weather-dependent heating for the main zone (if [2.4]=1 or 2): EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 173 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): EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 174 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 175 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]. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 176 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 177 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 178 ▪ 3°C~10°C Leaving water temperature: Modulation Only applicable in case of room thermostat control. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 179 See the illustration below. +[8-06] −[8-06] a Weather-dependent curve b Minimum leaving water temperature setpoint required to reach a stable condition on the comfort setpoint for the room. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 180 The weather-dependent curve can be defined using the 2-points method or the Slope-Offset method. "10.4.2 2-points curve" [ 161] and "10.4.3 Slope-offset curve" [ 162]. Code Description [2.E] ▪ 2-points ▪ Slope-Offset EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 181 157]. Setpoint mode The setpoint mode of the additional zone can be independently set from the setpoint mode of the main zone. "Setpoint mode" [ 172]. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 182 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): EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 183 2: Radiator The setting of the emitter type has an influence on the space heating setpoint range and the target delta T in heating as follows: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 184 External room thermostat,or Room thermostat. Ext thermostat type Only applicable in external room thermostat control. Also see "10.5.3 Main zone" [ 170]. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 185 2-points ▪ Slope-Offset 10.5.5 Space heating/cooling INFORMATION Cooling is only applicable in case of reversible models. Overview The following items are listed in the submenu: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 186 While the unit is in operation, the status indicator will light up blue constantly. To set the space operation mode 1 Go to [4.1]: Space heating/cooling > Operation mode EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 187 If the outdoor temperature is between the Space heating off temperature and the Space cooling off temperature, the operation mode remains unchanged. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 188 The space operation only changes from heating to cooling when the room temperature rises above the desired cooling temperature added by the hysteresis value. ▪ Range: 1°C~10°C EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 189 In heating: a Additional LWT zone: Highest temperature b Main LWT zone: Lowest temperature c Mixing station EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 190 ON or OFF condition. Remark: Continuous pump operation requires more energy than sample or request pump operation. a Space heating/cooling control b Off c On d Pump operation EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 191 In this part of the menu it can be read out which type of unit is used: Code Description [4.6] [E‑02] Unit type: ▪ 0 Reversible ▪ 1 Heating only EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 192 6: 80% pump speed during sampling ▪ 7: 70% pump speed during sampling ▪ 8: 60% pump speed during sampling The maximum values depend on the unit type: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 193 Use this setting to compensate for possible heat losses of the building due to the evaporation of melted ice or snow. (e.g. in cold region countries). EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 194 Room frost protection [1.4] prevents the room from getting too cold. For more information about room frost protection, see "10.5.2 Room" [ 166]. 10.5.6 Tank Overview The following items are listed in the submenu: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 195 When powerful operation is active, the risk of space heating/cooling and capacity shortage comfort problems is significant. In case of frequent domestic hot water operation, frequent and long space heating/cooling interruptions will happen. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 196 ▪ 4: Thursday ▪ 5: Friday ▪ 6: Saturday ▪ 7: Sunday [5.7.3] [2‑02] Start time [5.7.4] [2‑03] Tank setpoint: 60°C [5.7.5] [2‑04] Duration: 40~60 minutes EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 197 During disinfection of the water inside the domestic hot water heat exchanger coil by periodically heating storage tank specific temperature, DHW temperature can exceed this maximum temperature. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 198 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 199 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 200 [7] User settings Space heating/cooling 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 201 ▪ Select On. 2 Set the first day of your holiday. — ▪ Go to [7.3.2]: From. ▪ Select a date. ▪ Confirm the changes. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 202 ▪ You have programmed a quiet mode schedule: During the night: Most quiet. During the day: Off to ensure the heating/cooling capacity of the system. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 203 INFORMATION Price value ranging from 0.00~990 valuta/kWh (with 2 significant values). INFORMATION If no schedule is set, the Electricity price for High is taken into account. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 204 Renewable heat incentive per kWh Calculation of the gas price Gas price=Actual gas price+(Incentive/kWh×0.9) Gas price=4.08+(5×0.9) Gas price=8.58 Calculation of the electricity price Electricity price=Actual electricity price+Incentive/kWh EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 205 Reset the configuration settings stored in the MMI (user interface of the indoor unit). Example: Energy meterings, holiday settings. INFORMATION This does not reset the configuration settings and field settings of the indoor unit. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 206 Return water temperature [°C] Storage tank temperature [°C] Ambient temperature [°C] Leaving water temperature after storage tank [°C] Water pressure [bar] Water volume flow rate [l/min] EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 207 [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: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 208 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] EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 209 When measuring the resistance value of each heater, you can set the exact heater capacity and this will lead to more accurate energy data. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 210 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 211 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 212 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 213 This is important in case glycol is used to protect the water circuit against freezing. If NOT set correctly, the liquid in the piping can freeze. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 214 [8-02]: Anti-recycle timer [8-01] [8-02] 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 215 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 216 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 217 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 218 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: ▪ ▪ EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 219 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 220 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 221 (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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 222 ▪ 0 None: NOT installed ▪ 1 1/10kWh: Installed ▪ 2 1/kWh: Installed ▪ 3 10/kWh: Installed ▪ 4 100/kWh: Installed ▪ 5 1000/kWh: Installed EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 223 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 224 INFORMATION Direct (SH) is only possible in case of 1 leaving water temperature zone with: ▪ room thermostat control, OR ▪ external room thermostat control. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 225 To determine the value of [C‑03], proceed as follows: 1 Determine the COP (= coefficient of performance) using the formula: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 226 Code Description [7.5.1] User settings > Electricity price > High [7.5.2] User settings > Electricity price > Medium [7.5.3] User settings > Electricity price > EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 227 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 228 Manually start a defrost operation. The forced defrost will only start when at least the following conditions are fulfilled: ▪ Unit is in heating operation and has been running for a few minutes EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 229 To export MMI settings 1 Open the user interface panel and insert a USB memory stick. — 2 On the user interface, go to [9.N] Export MMI settings. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 230 Space heating by tank heating support Storage tank temperature tank In this example: Tank setpoint (may differ depending on space heating setpoint) Boiler off temperature (T +3+[7‑0D]) B Off EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 231 Range: 0 kW~63 kW (step: 1 kW) The capacity should be limited to the capacity provided by the heat pump. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 232 Equilibrium temperature: Outdoor temperature below which operation of the backup heater (and tank heating support in case of a bivalent system) is allowed. Range: –15°C~35°C EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 233 0 No : The system only has a main zone. ▪ 1 N/A ▪ 2 Yes: A bizone kit is installed in order to add an additional temperature zone. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 234 The speed of the main zone pump can be fixed with this setting. Code Description [9.P.4] [7-0B] Main zone pump fixed PWM: Fixed pump speed for main (mixed) zone. ▪ 20~95% (default: 95) EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 235 241] 10.5.11 User profile [B] User profile: See "To change the user permission level" [ 147]. [B] User profile Installer settings Commissioning User profile Operation Malfunctioning EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 236 The user can then control the system via the ONECTA app. This needs the following components in case of WLAN cartridge: This needs the following components in case of WLAN module: EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 237 ONECTA app. Remove from cloud: Remove the WLAN cartridge/module from the cloud. Code Description [D.4] Remove from cloud: ▪ ▪ EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 238 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 239 (**) 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 240 Mixing valve turning time (*) Only applicable in Swedish language. INFORMATION Depending on the selected installer settings and unit type, settings will be visible/ invisible. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 241 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 242 The power supply voltage matches the voltage on the identification label of the unit. There are NO loose connections or damaged electrical components in the switch box. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 243 2 Close all space heating loops that can be closed. — 3 Start the pump test run (see "11.4.4 Actuator test run" [ 247]). — EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 244 If necessary, repeat performing the automatic air purge until you are sure that all air is removed from the system. During air purge function, pump speed limitation [9‑0D] is NOT applicable. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 245 3 In the menu, set Type = Manual. 4 Select Start air purge. 5 Select OK to confirm. Result: The air purge starts. It stops automatically when ready. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 246 "To change — the user permission level" [ 147]. 2 Go to [A.1]: Commissioning > Operation test run. 3 Select a test from the list. Example: Heating. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 247 For the backup heater test run, make sure that at least one of the two mixing valves of the unit is open during the test. Otherwise the thermal cut-out of the backup heater may be triggered. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 248 The UFH screed dryout function can be executed without finishing the outdoor installation. In this case, the backup heater will perform the screed dryout and supply the leaving water without heat pump operation. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 249 The underfloor heating screed dryout function is active even if the user does NOT confirm emergency operation. ▪ During underfloor heating screed dryout, pump speed limitation [9‑0D] is NOT applicable. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 250 2 Press the left dial to open the menu structure and to: 1 View the status of sensors and actuators. — 2 Adjust the current program — EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 251 [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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 252 Show the user what to do for the maintenance of the unit. ▪ Explain about energy saving tips to the user as described in the operation manual. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 253 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 254 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 255 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" [ 103]). EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 256 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 257 In some cases, it is normal that the unit decides to use a low water flow. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 258 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). EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 259 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 260 14.3.7 Symptom: The pressure relief valve opens Possible causes Corrective action The valve (if equipped) of the water Open the valve. circuit towards the expansion vessel is closed. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 261 ▪ the boiler is operating correctly. ▪ the boiler capacity is sufficient. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 262 This should be done by a licensed installer or by your local dealer. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 263 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 264 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) EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 265 J6-32 Leaving water temperature thermistor Abnormality (outdoor unit) J6-33 Sensor communication error J8-00 Malfunction of refrigerant liquid thermistor JA-00 OU: Malfunction of high pressure sensor EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 266 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 U8-11 Connection with the Wireless gateway lost EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 267 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 268 See: ▪ "7.3.6 To install the discharge grille" [ 83] ▪ "7.3.7 To remove the discharge grille, and put the grille in safety position" [ 84] EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 269 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 270 Press BS1 once. H1P keeps flashing, indicating that you are in a mode that does not allow compressor operation. = OFF, = ON, and = flashing. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 271 / solenoid valves to their initial state. INFORMATION Power OFF. When power is turned OFF and turned ON again, the recovery mode is deactivated automatically. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 272 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 273 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 274 Connection cover b Screw plug 3 Insert the screw plug into the fill and drain kit and secure with the clip contained in the option kit. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 275 1 Place an appropriate tray under the drain connection to collect water spillage. 2 Open the screw plug and remove the sealing plug and IMMEDIATELY close with the previously prepared screw plug with drain connection. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 276 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. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 277 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 the latest technical data is available on the Daikin Business Portal (authentication required). In this chapter 16.1...
Page 278 Height of obstacles B and D NOT allowed NOTICE Cascading outdoor units. Installation layouts with multiple outdoor units in combination with floor-standing indoor units are NOT allowed. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 279 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) EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 280 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 281 Right side view See note *** See note *** Notes: Symbols: Live Neutral Protective earth Noiseless earth Field wiring Option Terminal strip Terminal Connector Connection EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 282 Push button switch C1~C4 (A1P, A2P) Capacitor DS1 (A1P) DIP switch Drain tube heater (field supply) E1HHEX~E3HHEX Plate heat exchanger heaters Field fuse (field supply) EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 283 High pressure sensor S1PH, S2PH High pressure switch S1PL Low pressure switch Current transfo TC (A2P) Signal transmission circuit V1D~V4D (A1P) Diode V1R (A1P) IGBT power module EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 284 K3R (A1P) Magnetic relay (Y3S) K4R (A1P) Magnetic relay (E1HC) K2M, K11M (A2P) Magnetic contactor L1R~L4R Reactor Compressor motor Fan motor PS (A2P) Switching power supply EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 285 Printed circuit board (ACS) BS1~BS3 (A1P) Push button switch C1~C619 (A1P) Capacitor DS1 (A1P) DIP switch Drain tube heater (field supply) E1HHEX Plate heat exchanger heater EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 286 High pressure switch S1PL Low pressure switch SEG* (A1P) 7-segment display Current transfo TC (A1P) Signal transmission circuit V1D~V3D (A1P) Diode V1R, V2R (A1P) Diode module EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 287 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 288 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 289 # 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 290 Alarm output Alarm output BUH option Backup heater option BUH option only for * Backup heater option only for * Bizone mixing kit Bizone mixing kit EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 291 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 292 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 EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 293 Power limitation A8P: X801M: 4-5 user interface communication demand input 4 signal 2 core 2x0.75 Only for LAN adapter A13P: P1-P2 user interface communication 4D132247 D EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 294 See also the minimum and maximum allowed water flow range in the technical specifications. ▪ Make sure water quality complies with EU directive 2020/2184. EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 295 Max. operating pressure PMS (drinking water installation) m Nominal voltage U n Rated current of fuse o Protection type p Backup heater (optional) q Part number r Revision EPRA14~18D + ETSH/X(B)16P50E Installer reference guide Daikin Altherma 3 H HT ECH₂O 4P759883-1 – 2024.03...
Page 296 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 297 1/19 Field settings table Applicable indoor units ETSH16P30E▲▼ ETSH16P50E▲▼ ETSHB16P30E▲▼ ETSHB16P50E▲▼ ETSX16P30E▲▼ ETSX16P50E▲▼ ETSXB16P30E▲▼ ETSXB16P50E▲▼ Notes (*1) *X* (*2) *H* (*3) (*4) EKECBUA3V (*5) EKECBUA6V (*6) EKECBUA9W BUH less (*7) 300L tank (*8) E model (*E▲) (*9) E7 model (*E▲7) (*10) ▲...
Page 298 2/19 Field settings table Breadcrumb Setting name Range, step Default value Room └─ Antifrost 1.4.1 [2-06] Activation 0: No 1: Yes 1.4.2 [2-05] Room setpoint 4~16°C, step: 1°C 8°C └─ Setpoint range 1.5.1 [3-07] Heating minimum 12~18°C, step: 1°C 12°C 1.5.2 [3-06] Heating maximum...
Page 299 3/19 Field settings table Breadcrumb Setting name Range, step Default value [2-0C] Emitter type 0: Underfloor heating 1: Fancoil unit 2: Radiator └─ Setpoint range 2.8.1 [9-01] Heating minimum 15~37°C, step: 1°C 25°C 2.8.2 [9-00] Heating maximum R/W ([2- [2-0C]=2: 0C] ≠...
Page 300 4/19 Field settings table Breadcrumb Setting name Range, step Default value [0-02] High ambient temp. for LWT add zone heating WD curve. 10~25°C, step: 1°C 15°C [0-03] Low ambient temp. for LWT add zone heating WD curve. -40~5°C, step: 1°C -15°C └─...
Page 301 5/19 Field settings table Breadcrumb Setting name Range, step 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 Space heating / cooling [F-00] Pump outside range 0: Restricted...
Page 302 6/19 Field settings table Breadcrumb Setting name Range, step Default value [6-01] Margin 0~10°C, step: 1°C 0°C WD curve type 0: 2-points 1: Slope-Offset User settings └─ Quiet 7.4.1 mode 0: OFF 1: Manual 2: Automatic 7.4.3 Level 0: Quiet 1: More Quiet 2: Most Quiet └─...
Page 303 7/19 Field settings table Breadcrumb Setting name Range, step Default value 9.1.4.4 [6-04] Additional capacity step 2 R/W (*5, 0~10kW, step: 0,2kW 0kW (*4) R/O (*4, 3kW (*7) 4kW (*5) 6kW (*6) └─ Main zone 9.1.5.1 [2-0C] Emitter type 0: Underfloor heating 1: Fancoil unit 2: Radiator 9.1.5.2...
Page 304 8/19 Field settings table Breadcrumb Setting name Range, step Default value 9.1.9 [0-00] Leaving water value for high ambient temp. for LWT add zone [9-05]~min(45,[9-06])°C, step: 1°C heating WD curve. [2-0C]=0 25°C [2-0C]=1 35°C [2-0C]=2 35°C 9.1.9 [0-01] Leaving water value for low ambient temp. for LWT add zone [9-05]~[9-06]°C, step: 1°C heating WD curve.
Page 305 9/19 Field settings table Breadcrumb Setting name Range, step Default value 9.3.4 [6-03] Capacity step 1 0~10kW, step: 0,2kW 2kW (*5) 3kW (*4, *6, *7) 9.3.5 [6-04] Additional capacity step 2 R/W (*5, 0~10kW, step: 0,2kW 0kW (*4) R/O (*4, 3kW (*7) 4kW (*5) 6kW (*6)
Page 306 10/19 Field settings table Breadcrumb Setting name Range, step Default value 9.8.4 [D-01] Benefit kWh power supply 0: No 1: Open 2: Closed 3: Smart Grid 9.8.6 Allow electric heaters 0: No 1: Yes 9.8.7 Enable Room buffering 0: No 1: Yes 9.8.8 Limit setting kW...
Page 307 11/19 Field settings table Breadcrumb Setting name Range, step Default value 9.B.3 [1-0A] Averaging time 0: No 1: 12 h 2: 24 h 3: 48 h 4: 72 h └─ Bivalent 9.C.1 [C-02] Bivalent 0: Off 1: Direct (SH) 2: Indirect (DHW) (*3) 3: Indirect (DHW + SH) 9.C.2 [7-05]...
Page 308 12/19 Field settings table Breadcrumb Setting name Range, step Default value [0-0D] High ambient temp. for DHW WD curve. 10~25°C, step: 1°C 15°C [0-0E] Low ambient temp. for DHW WD curve. -40~5°C, step: 1°C -10°C [1-00] Low ambient temp. for LWT main zone heating WD curve. -40~5°C, step: 1°C -15°C [1-01]...
Page 309 13/19 Field settings table Breadcrumb Setting name Range, step Default value [2-00] When should the disinfection function be executed? 0: Each day 1: Monday 2: Tuesday 3: Wednesday 4: Thursday 5: Friday 6: Saturday 7: Sunday [2-01] Should the disinfection function be executed? 0: No 1: Yes [2-02]...
Page 310 14/19 Field settings table Breadcrumb Setting name Range, step Default value [4-03] Operation permission of the booster heater. 0: Restricted 1: Allowed 2: Overlap 3: Compressor off 4: Legionella only [4-04] Water pipe freeze prevention 0: Continuous pump operation 1: Non continuous pump operation 2: OFF [4-05] [4-06]...
Page 311 15/19 Field settings table Breadcrumb Setting name Range, step Default value [6-01] The temperature difference determining the heat pump OFF 0~10°C, step: 1°C temperature. 0°C [6-02] What is the capacity of the booster heater? 0~10kW, step: 0,2kW [6-03] What is the capacity of the backup heater step 1? 0~10kW, step: 0,2kW 2kW (*5) 3kW (*4, *6, *7)
Page 312 16/19 Field settings table Breadcrumb Setting name Range, step Default value [8-03] Booster heater delay timer. 20~95 min, step: 5 min 50 min [8-04] Additional running time for the maximum running time. 0~95 min, step: 5 min 95 min [8-05] Allow modulation of the LWT to control the room temp? 0: No 1: Yes...
Page 313 17/19 Field settings table Breadcrumb Setting name Range, step Default value [C-02] Is an external backup heat source connected? 0: Off 1: Direct (SH) 2: Indirect (DHW) (*3) 3: Indirect (DHW + SH) [C-03] Bivalent activation temperature. -25~25°C, step: 1°C 0°C [C-04] Bivalent hysteresis temperature.
Page 314 18/19 Field settings table Breadcrumb Setting name Range, step Default value [D-0A] [D-0B] [D-0C] [D-0D] [D-0E] [E-00] Which type of unit is installed? 0: LT split [E-01] Which type of compressor is installed? [E-02] What is the indoor unit software type? R/W (*1) 0: Reversible (*1) R/O (*2)
Page 315 19/19 Field settings table Breadcrumb Setting name Range, step Default value [F-0C] Close shut-off valve during cooling? 0: No (*10) 1: Yes (*9) [F-0D] What is the pump operation mode? 0: Continuous 1: Sample 2: Request [F-0E] Tank heating support_max 10~35 kW, step: 1kW 20 kW Bi-zone kit settings...
Page 316 4P759883-1 2024.03...

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