Page 1 Installer reference guide Daikin Altherma 3 H HT F https://daikintechnicaldatahub.eu EPRA14D▲V3▼ ETVH16S18E▲6V▼ EPRA16D▲V3▼ ETVH16S23E▲6V▼ EPRA18D▲V3▼ ETVH16S18E▲9W▼ ETVH16S23E▲9W▼ EPRA14D▲W1▼ ETVX16S18E▲6V▼ EPRA16D▲W1▼ ETVX16S23E▲6V▼ EPRA18D▲W1▼ ETVX16S18E▲9W▼ ETVX16S23E▲9W▼ ▲= A, B, C, …, Z ▼= , , 1, 2, 3, …, 9...
Page 2: Table Of Contents
Installation site requirements of the indoor unit ..................65 Opening and closing the units ............................66 7.2.1 About opening the units..........................66 7.2.2 To open the outdoor unit..........................66 Installer reference guide EPRA14~18D + ETVH/X16S18+23E Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 3 To connect the PC cable to the switch box....................134 10.2 Configuration wizard............................... 134 10.3 Possible screens ................................136 10.3.1 Possible screens: Overview ..........................136 10.3.2 Home screen..............................137 EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 4 Solving problems based on error codes ......................... 249 14.4.1 To display the help text in case of a malfunction ..................249 14.4.2 Error codes of the unit ........................... 249 Installer reference guide EPRA14~18D + ETVH/X16S18+23E Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 5 Wiring diagram: Outdoor unit ............................262 16.5 Wiring diagram: Indoor unit ............................267 16.6 ESP curve: Indoor unit..............................273 17 Glossary 18 Field settings table EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 6: About This Document
The original documentation is written in English. All other languages are translations. 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 7: Meaning Of Warnings And Symbols
Indicates a situation that could result in death or serious injury. WARNING: FLAMMABLE MATERIAL CAUTION Indicates a situation that could result in minor or moderate injury. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 8: Installer Reference Guide At A Glance
Piping installation What to do and know to install the piping of the system, including information on how to prepare for an installation EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
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). EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
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") EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
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. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 16: 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. Opening and closing the units (see "7.2 Opening and closing the...
Page 17 NOT used in glycol systems since the presence may lead to the precipitation of certain components in the glycol's corrosion inhibitor. WARNING Ethylene glycol is toxic. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 18 "7.3.7 To remove the discharge grille, and put the grille in safety position" [ 78] CAUTION Do NOT push or place redundant cable length in the unit. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 19 Commissioning method MUST be in accordance with the instructions from this manual. See "11 Commissioning" [ 224]. "13 Maintenance and service" [ 235]) Maintenance and service (see DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
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. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 21 See: ▪ "7.3.6 To install the discharge grille" [ 76] ▪ "7.3.7 To remove the discharge grille, and put the grille in safety position" [ 78] EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 22: 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. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 23: 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" [ 23] ▪ "7.3.4 To install the outdoor unit" [ 74] ±150 4× 4.1.2 To unpack the outdoor unit EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 24: 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 EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 25: Indoor Unit
Shut-off valves for water circuit b Overpressure bypass valve c General safety precautions d Addendum book for optional equipment e Indoor unit installation manual EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 26: To Handle The Indoor Unit
Handles at the back of the unit b Handles at the bottom of the unit. Carefully tilt the unit to the back so that the handles become visible. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 27: About The Units And Options
High water temperature – ambient zone 2 (see operation range) Refrigerant R32 Capacity class Model series Power supply Model series 5.1.2 Identification label: Indoor unit Location EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 28: Combining Units And Options
EKMST2 with rubber feet: to install the outdoor unit on foundations where drilling is not allowed or possible, such as flat roofs or pavements. For installation instructions, see the installation manual of the mounting stand. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 29: Possible Options For The Indoor 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. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 30 Universal centralised controller (EKCC8-W) Controller for cascade control. Bizone kit (EKMIKPOA or EKMIKPHA) You can install an optional bizone kit. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 31 The installation of the optional Smart grid relay kit is required in case of high voltage Smart grid contacts (EKRELSG). For installation instructions, see "9.3.11 To connect a Smart Grid" [ 125]. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 32: Application Guidelines
Setting up the domestic hot water tank ▪ Setting up the energy metering ▪ Setting up the power consumption control ▪ Setting up an external temperature sensor EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 33: 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. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 34: 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. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 35 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 36 OFF condition. No separation between ▪ Code: [C-05] heating or cooling demand. Benefits ▪ Cooling. The heat pump convector offers, besides heating capacity, also excellent cooling capacity. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 37 ▪ The space operation mode is sent by one digital output (X2M/4 and X2M/3) on the indoor unit to: The heat pump convectors The shut-off valve EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 38: 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. Setup EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 39 ▪ For more information about connecting the electrical wiring to the unit, see: "9.2 Connections to the outdoor unit" [ 101] "9.3 Connections to the indoor unit" [ 109] EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 40 ▪ For more information about connecting the electrical wiring to the unit, see: "9.2 Connections to the outdoor unit" [ 101] "9.3 Connections to the indoor unit" [ 109] EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 41 Combination: Underfloor heating + Heat pump convectors – Multiple rooms Setup A Main leaving water temperature zone B Room 1 C Room 2 a External room thermostat b Heat pump convectors (+ controllers) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 42 ▪ #: [2.9] temperature. ▪ Code: [C-07] Number of water temperature zones: 0 (Single zone): Main ▪ #: [4.4] ▪ Code: [7-02] EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 43: Multiple Rooms - Two Lwt Zones
(no real cooling), or NOT allow it. See setup below. Setup Three bizone kit system variations are possible: System without hydraulic separator: System with hydraulic separator for main zone: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 44 This is to guarantee the correct water flow balance between the main leaving water temperature zone and the additional leaving water temperature zone in relation to the required capacity of both water temperature zones. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 45 The user interface integrated in the indoor unit decides the space operation mode. Mind that the operation mode on each controller of the heat pump convectors must be set to match the indoor unit. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 46 The combination of the two heat emitter systems provides the excellent heating comfort of the underfloor heating, and the excellent cooling comfort of the heat pump convectors. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 47: Setting Up An Auxiliary Heat Source For Space Heating
Setup ▪ Integrate the auxiliary boiler as follows: A Main leaving water temperature zone B One single room EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 48 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 70°C. To do so: Set the desired water temperature via the auxiliary boiler controller to maximum 70°C.
Page 49: Setting Up The Domestic Hot Water Tank
6.4 Setting up the domestic hot water tank 6.4.1 System layout – Integrated DHW tank A Domestic hot water a Cold water IN b Hot water OUT EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 50: Selecting The Volume And Desired Temperature For The Dhw Tank
Then V =307 l DHW consumption (equivalent hot water volume at 40°C) Required DHW tank volume if only heated once DHW tank temperature Cold water temperature EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 51: Setup And Configuration - Dhw Tank
Thermodynamic cycle of the heat pump Electrical backup heater ▪ For more information about optimizing the energy consumption for producing domestic hot water, see "10 Configuration" [ 131]. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 52: Dhw Pump For Instant Hot Water
The DHW pump is field-supplied and its installation is the responsibility of the installer. For the electrical wiring, see "9.3.5 To connect the domestic hot water pump" [ 119]. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 53: Setting Up The Energy Metering
▪ The produced heat is calculated internally based on: The leaving and entering water temperature The flow rate EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 54: Consumed Energy
Use a… power meter ▪ Single-phase outdoor unit Single-phase ▪ Backup heater supplied from a single- phase grid, i.e. the backup heater model is: *6V (6V3: 1N~ 230 V). EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 55 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" [ 56] for an example with two power meters. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 56: Preferential Kwh Rate Power Supply
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" [ 207]. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 57: Permanent Power Limitation
DHW production. Power input t Time DI Digital input (power limitation level) a Power limitation active b Actual power input EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 58: 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 59: 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 EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 60: 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: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 61 To protect the outdoor unit, the internal sensor of the outdoor unit is always used. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 62: Unit Installation
Mind the spacing guidelines. See "16.1 Service space: Outdoor unit" [ 259]. NOTICE ▪ Do NOT stack the units on each other. ▪ Do NOT hang the unit on a ceiling. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 63 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 64 WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation and are executed ONLY by authorised persons. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A –...
Page 65: Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates
Cooling is only applicable in case of reversible models. ▪ Mind the measurement guidelines: Maximum height difference between indoor unit and outdoor 10 m unit Maximum total water piping length 50 m EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 66: Opening And Closing The Units
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 67: To Remove The Transportation Stay
Transportation stays (2×) and washers (2×) b Transportation stay (1×) Prerequisite: Open the switch box cover. See "7.2.2 To open the outdoor unit" [ 66]. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 68: To Attach The Compressor Cover Piece
1 Put the compressor cover piece on its place. Use the screws (4x) of the transportation stay to fix it (see "7.2.3 To remove the transportation stay" [ 67]). EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 69: To Close The Outdoor Unit
Top panel b User interface panel c Switch box cover d Front panel e High voltage switch box cover Open 1 Remove the top panel. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 70 X 1 4 Y 3 Remove the switch box cover. 4× 4 If necessary, remove the front plate. This is, for example, necessary in the following cases: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 71: To Lower The Switch Box On The Indoor Unit
1 Remove the fixing plate at the top of the unit. 2 Tilt the switch box to the front and lift it out of its hinges. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 72: To Close The Indoor Unit
7.3 Mounting the outdoor unit 7.3.1 About mounting the outdoor unit When You have to mount the outdoor unit before you can connect the water piping. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 73: Precautions When Mounting The Outdoor Unit
Use 4 sets of M12 anchor bolts, nuts and washers. Provide at least 150 mm of free space below the unit. Additionally, make sure the unit is positioned at least 100 mm above the maximum expected level of snow. Anchor points (mm) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 74: To Install The Outdoor Unit
To avoid injury, do NOT touch the air inlet or aluminium fins of the unit. 1 Carry the unit by its slings, and put it onto the installation structure. ±150 4× 2 Fix the unit to the installation structure. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 75: To Provide Drainage
▪ Install a drain tube heater (field supply). To connect the drain tube heater, see "9.2.1 To connect the electrical wiring to the outdoor unit" [ 102]. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 76: To Install The Discharge Grille
Electrical wiring. Before installing the discharge grille, connect the electrical wiring. Install the lower part of the discharge grille 1 Insert the hooks. 2 Insert the ball studs. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 77 4 Align and attach the left side. 5 Align and attach the middle part. 6 Align and attach the right side. 7 Insert the hooks. 8 Insert the ball studs. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 78: To Remove The Discharge Grille, And Put The Grille In Safety Position
"7.3.7 To remove the discharge grille, and put the grille in safety position" [ 78] 1 Remove the upper part of the discharge grille. 4× 2 Remove the lower part of the discharge grille. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 79 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 80: Mounting The Indoor Unit
4 Adjust the height of the leveling feet to compensate for floor irregularities. The maximum allowed deviation is 1°. ≤1° NOTICE Do NOT tilt the unit forwards: 1° 1° 0° EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 81: To Connect The Drain Hose To The Drain
It is recommended to use a tundish to collect the water. Option 1: Through the left side panel 3× Option 2: Through the right side panel 3× EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 82: Piping Installation
Because brass is a soft material, use appropriate tooling for connecting the water circuit. Inappropriate tooling will cause damage to the pipes. ▪ Insulation. Insulate up to the base of the heat exchanger. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 83 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 84 ▪ Hygienic measures. The installation must be in compliance with the applicable legislation and may require additional hygienic installation measures. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 85: Formula To Calculate The Expansion Vessel Pre-Pressure
Individual room thermostat (optional) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 86 This is the height difference (m) between the highest point of the water circuit and the indoor unit. If the indoor unit is at the highest point of the installation, the installation height is 0 m. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 87: Changing The Pre-Pressure Of The Expansion Vessel
Changing the pre-pressure of the expansion vessel should be done by releasing or increasing nitrogen pressure through the Schrader valve of the expansion vessel. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 88: To Check The Water Volume: Examples
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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 89: Precautions When Connecting The Water Piping
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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 90 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. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 91: To Connect The Recirculation Piping
2 Cut out the rubber grommet on top of the unit, and remove the stop. The recirculation connector is placed below the hole. 3 Route the recirculation piping through the grommet and connect it to the recirculation connector. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 92: To Fill The Water Circuit
Glycol leaking out of the freeze protection valves. Freeze protection by glycol About freeze protection by glycol Adding glycol to the water lowers the freezing point of water. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 93 Add glycol according to the table below. Lowest expected outdoor Prevent from bursting Prevent from freezing temperature –5°C –10°C –15°C –20°C — –25°C — –30°C — EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 94 To protect the field piping against freezing, install the following parts: a Automatic air intake b Freeze protection valve (optional – field supply) c Normally closed valves (recommended – field supply) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 95: To Fill The Domestic Hot Water Tank
1 Open every hot water tap in turn to purge air from the system pipe work. 2 Open the cold water supply valve. 3 Close all water taps after all air is purged. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 96: 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 97: Electrical Installation
Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply with the applicable legislation. WARNING ALWAYS use multicore cable for power supply cables. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 98: Guidelines When Connecting The Electrical Wiring
Stranded conductor wire b Round crimp-style terminal ▪ Use the following methods for installing wires: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 99: 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.). EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 100: About Preferential Kwh Rate Power Supply
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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 101: Overview Of Electrical Connections Except External Actuators
"9.2.1 To connect the electrical wiring to the outdoor unit" [ 102]. Interconnection cable Drain tube heater cable Connection for power saving function (only for V3 models) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 102: To Connect The Electrical Wiring To The Outdoor Unit
1 Power supply cable: ▪ Route the cable through the frame. ▪ Connect the wires to the terminal block. ▪ Fix the cable with a cable tie. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 103 ▪ 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 104 ▪ 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 105 ▪ 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 106 ▪ 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 107 ▪ 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 108: 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 EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 109: 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 EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 110 ▪ 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 111 Addendum book for optional equipment Wired room thermostat ▪ Installation manual of the wired room without multi-zoning base unit thermostat ▪ Addendum book for optional equipment EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 112: 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 (= main power supply) — 1 2 3 EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 113 15 V DC, 10 mA. [9.8] Benefit kWh power supply Connect X11Y to X11YB. 1N~, 50 Hz, 230 V AC, 6.3 A 1 2 3 EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 114: To Connect The Backup Heater Power Supply
The backup heater capacity can vary, depending on the indoor unit model. Make sure that the power supply is in accordance with the backup heater capacity, as listed in the table below. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 115 Connect the backup heater power supply as follows: Q1DI a Factory-mounted cable connected to the contactor of the backup heater, inside the switch box (K5M) b Field wiring (see table below) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 116 C. K5M Safety contactor (in the lower switch box) Q1DI Earth leakage circuit breaker (field supply) SWB Switch box X6M Terminal (field supply) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 117: 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. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 118: To Connect The Electricity Meters
2 User interface panel 3 Upper switch box cover 2 Connect the electricity meters cable to the appropriate terminals as shown in the illustration below. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 119: To Connect The Domestic Hot Water Pump
3 Upper switch box cover 2 Connect the domestic hot water pump cable to the appropriate terminals as shown in the illustration below. M M2P EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 120: To Connect The Alarm Output
2 Connect the alarm output cable to the appropriate terminals as shown in the illustration below. Wires connected to the alarm output Wire between X2M and A4P Installation of EKRP1HBAA is required. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 121: To Connect The Space Cooling/Heating On/Off Output
Wires connected to the space cooling/heating ON/OFF output Wire between X2M and A4P Installation of EKRP1HBAA is required. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 122: To Connect The Changeover To External Heat Source
2 User interface panel 3 Upper switch box cover 2 Connect the changeover to external heat source cable to the appropriate terminals as shown in the illustration below. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 123: To Connect The Power Consumption Digital Inputs
2 User interface panel 3 Upper switch box cover 2 Connect the power consumption digital inputs cable to the appropriate terminals as shown in the illustration below. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 124: To Connect The Safety Thermostat (Normally Closed Contact)
2 Connect the safety thermostat (normally closed) cable to the appropriate terminals as shown in the illustration below. Note: The jumper wire (factory-mounted) must be removed from the respective terminals. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 125: To Connect A Smart Grid
Smart Grid relay kit (EKRELSG). The 2 incoming Smart Grid contacts can activate the following Smart Grid modes: Smart Grid contact Smart Grid operation mode Free running EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 126 1 Open the following (see "7.2.6 To open the indoor unit" [ 69]): 1 Top panel 2 User interface panel 3 Upper switch box cover 2 Connect the wiring as follows: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 127 Contact sides of relays e Jumper (factory-mounted). If you also connect a safety thermostat (Q4L), replace the jumper with the safety thermostat wires. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 128 1 2 3 4 X10M 5 6 9 10 2 Connect the low voltage wiring as follows: X5M.4 X5M.3 1314 3 Connect the high voltage wiring as follows: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 129: To Connect The Wlan Cartridge (Delivered As Accessory)
9.4 After connecting the electrical wiring to the indoor unit To prevent water ingress to the switch box, seal the low voltage wiring intake using the sealing tape (delivered as accessory). EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 130 Electrical installation Without low voltage cables With low voltage cables EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 131: 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. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 132: 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 EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 133 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 134: 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] EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 135 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 136: Possible Screens
Hysteresis [5.9] and [5.A] 10.3 Possible screens 10.3.1 Possible screens: Overview The most common screens are as follows: – a Home screen b Main menu screen EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 137: Home Screen
Smart energy is available via solar panels or smart grid. Smart energy is currently being used for space heating. Smart energy is currently being used for domestic hot water. Space operation mode Cooling Heating EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 138 Installed heat emitter type: Underfloor heating Fancoil unit Radiator Measured room temperature Leaving water temperature setpoint Holiday mode Holiday mode active EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 139: Main Menu Screen
Enable/disable breadcrumbs. Submenu Description Malfunctioning Restriction: Only displayed if a malfunction occurs. "14.4.1 To display the help text in case of malfunction" [ 249] for more information. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 140: Menu Screen
Restriction: Only displayed if a wireless LAN (WLAN) is installed. Contains settings needed when configuring the ONECTA app. 10.3.4 Menu screen Example: Language Time/date Holiday EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 141: Setpoint Screen
Measured by the unit Desired temperature Turn the right dial to increase/ decrease. Submenu Turn or press the left dial to go to the submenu. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 142: Detailed Screen With Values
5 Program the schedule for Saturday and copy it to Sunday. 6 Give the schedule a name. To go to the schedule 1 Go to [1.1]: Room > Schedule. 2 Set scheduling to Yes. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 143 Edit Copy 3 Select OK to confirm. To program the schedule for Monday 1 Select Monday. User defined 1 2 Select Edit. Delete Edit Copy EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 144 1 Select Monday. User defined 1 2 Select Copy. Delete Edit Copy Result: Next to the copied day, "C" is displayed. 3 Select Tuesday. User defined 1 EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 145 8:00 21°C 23:00 18°C --:-- 4 Confirm the changes. 5 Select Saturday. 6 Select Copy. 7 Select Sunday. 8 Select Paste. Result: User defined 1 EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 146: Weather-Dependent Curve
EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 147: 2-Points Curve
See "10.4.4 Using weather-dependent curves" [ 149]. 10.4.2 2-points curve Define the weather-dependent curve with these two setpoints: ▪ Setpoint (X1, Y2) ▪ Setpoint (X2, Y1) Example EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 148: Slope-Offset Curve
Examples Weather-dependent curve when slope is selected: Weather-dependent curve when offset is selected: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 149: Using Weather-Dependent Curves
10.4.4 Using weather-dependent curves Configure weather-dependent curves as following: To define the setpoint mode To use the weather-dependent curve, you need to define the correct setpoint mode: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 150 You cannot configure the curve with temperatures that are higher or lower than the set maximum and minimum setpoints for that zone or for the tank. When the maximum or minimum setpoint is reached, the curve flattens out. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 151: Settings Menu
To display the error code, open the menu screen and go to [0] Malfunctioning. Press more information about the error. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 152: Room
Example" [ 142]. Cooling schedule Only applicable for reversible models. Define a cooling schedule of the room temperature in [1.3] Cooling schedule. "10.3.7 Schedule screen: Example" [ 142]. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 153 Under leaving water temperature control, room frost protection is NOT guaranteed. However, if room antifrost [2‑06] is activated, limited frost protection by the unit is possible: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 154 ▪ Outdoor ambient temperature drops below 6°C ▪ the temperature setpoint of the leaving water will be lowered. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 155 When adjusting the room temperature ranges, all desired room temperatures are also adjusted to guarantee they are between the limits. Code Description [1.5.1] [3-07] Heating minimum [1.5.2] [3-06] Heating maximum [1.5.3] [3-09] Cooling minimum EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 156: 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: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 157 Define a heating temperature schedule for the main zone via [2.2] Heating schedule. "10.3.7 Schedule screen: Example" [ 142]. Cooling schedule Define a cooling temperature schedule for the main zone via [2.3] Cooling schedule. "10.3.7 Schedule screen: Example" [ 142]. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 158 10°C. Heating WD curve Set weather-dependent heating for the main zone (if [2.4]=1 or 2): EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 159 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 160 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 161 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 162 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 163 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 164 ▪ 3°C~10°C Leaving water temperature: Modulation Only applicable in case of room thermostat control. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 165 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 166 The weather-dependent curve can be defined using the 2-points method or the Slope-Offset method. "10.4.2 2-points curve" [ 147] and "10.4.3 Slope-offset curve" [ 148]. Code Description [2.E] ▪ 2-points ▪ Slope-Offset EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 167: Additional Zone
142]. Setpoint mode The setpoint mode of the additional zone can be independently set from the setpoint mode of the main zone. "Setpoint mode" [ 158]. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 168 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 169 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 170 External room thermostat,or Room thermostat. Ext thermostat type Only applicable in external room thermostat control. Also see "10.5.3 Main zone" [ 156]. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 171: Space Heating/Cooling
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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 172 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 173 If the outdoor temperature is between the Space heating off temperature and the Space cooling off temperature, the operation mode remains unchanged. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 174 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 175 In heating: a Additional LWT zone: Highest temperature b Main LWT zone: Lowest temperature c Mixing station EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 176 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 177 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 178 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 179 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 180: Tank
Antifrost [1.4] or [4.C] prevents the room from getting too cold. For more information about room frost protection, see "10.5.2 Room" [ 152]. 10.5.6 Tank Overview The following items are listed in the submenu: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 181 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 182 The domestic hot water can be prepared in 3 different ways. They differ from each other by the way the desired tank temperature is set and how the unit acts upon it. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 183 ▪ 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 184 The maximum temperature that users can select for the domestic hot water. You can use this setting to limit the temperatures at the hot water taps. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 185 EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 186 The values indicated in the following graph are examples. For more details about the DHW operation range of this unit, see the technical data book. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 187 In [2.E] WD curve type, you can choose which method you want to use. In [5.E] WD curve type, the chosen method is shown read-only (same value as in [2.E]). EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 188: User Settings
Setting the starting date and ending date of your holiday. To check if holiday mode is activated and/or running is displayed on the home screen, holiday mode is active. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 189 To use quiet mode 1 Go to [7.4.1]: User settings > Quiet > Mode. 2 Do one of the following: — EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 190 3 Define the restrictions (time + level) to be used after midday (PM): ▪ [7.4.4.4] PM Restricted time Example: From 3 p.m. to 7 p.m. ▪ [7.4.4.5] PM Restricted level Example: Most quiet EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 191 To set the electricity price 1 Go to [7.5.1]/[7.5.2]/[7.5.3]: User settings > Electricity price > High/Medium/Low. 2 Select the correct electricity price. 3 Confirm the changes. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 192 This is an example and the prices and/or values used in this example are NOT accurate. Data Price/kWh Gas price 4.08 Electricity price 12.49 Renewable heat incentive per kWh EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 193: 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 EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 194: Installer Settings
LAN adapter. [8.9] Running hours Running hours of specific system components 10.5.9 Installer settings Overview The following items are listed in the submenu: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 195 • [E-05]: Can the system prepare domestic hot water? • [E-06]: Is a domestic hot water tank installed in the system? • [E-07]: What kind of domestic hot water tank is installed? EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 196 ▪ For a 6V model, this can be set to: 230V, 1ph 230V, 3ph ▪ For a 9W model, this is fixed to 400V, 3ph. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 197 Only for systems with integrated domestic hot water tank: If the storage temperature setpoint is higher than 50°C, 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 domestic hot water tank.
Page 198 Backup heater operation: ▪ 0: Restricted ▪ 1: Allowed ▪ 2: Only DHW: Backup heater operation is enabled for domestic hot water and disabled for space heating. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 199 3: auto SH reduced/DHW off ▪ 4: auto SH normal/DHW off INFORMATION The auto emergency setting can be set in the menu structure of the user interface only. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 200 If the backup heater operation is limited ([4‑00]=0) and the outdoor temperature is lower than setting [5‑03], the domestic hot water will not be heated with the backup heater. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 201 [8-01]+ [8-01]+ [8-04] [8-04] [8-02] [8-02] [8-01] [8-01] [5-03] [4-02] [F-01] 35°C Ambient (outdoor) temperature t Time Anti-recycle timer Maximum running time domestic hot water EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 202 Water pipe freeze prevention. Even if you turn OFF space heating/cooling operation ([C.2]: Operation > Space heating/cooling), water pipe freeze prevention –if enabled– will remain active. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 203 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 204 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 205 [D-00] back to 0, as the system does not have a booster heater. Only set [D-00] to the values in the table below: [D‑00] Backup heater Compressor Forced OFF Forced OFF Allowed EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 206 Emergency mode. In case emergency mode is active, buffering with electrical heater is NOT possible in Forced on and Recommended on operation modes. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 207 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 208 2 power meters with different pulse frequencies. If only 1 or no power meter is used, select 'None' to indicate the corresponding pulse input is NOT used. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 209 Remark: This value has only meaning in room thermostat control. Ext. amb. sensor offset ONLY applicable in case an external outdoor ambient sensor is connected and configured. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 210 OFF. Set this value in case an auxiliary boiler is used. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 211 See illustration below for the schematic location of this contact. OFF ON YC Y1 Y2 Y3 Y4 Code Description 9.C.3 [C-03] Range: –25°C~25°C (step: 1°C) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 212 Solar panels. If solar panels are used, set the electricity price value very low to promote the use of the heat pump. Code Description [7.5.1] User settings > Electricity price > High EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 213 When power returns after a power supply failure, the auto restart function reapplies the user interface settings at the time of the power failure. Therefore, it is recommended to always enable the function. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 214 Afterwards: An installer can manually disable the protective functions by setting [9.G]: Disable protections=Yes. After his work is done, he can enable the protective functions by setting [9.G]: Disable protections=No. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 215 ▪ Back ▪ To export MMI settings 1 Open the user interface panel and insert a USB memory stick. — EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 216 ▪ 1 With hydraulic separator direct pump ▪ 2 With hydraulic separator / with direct pump a: Indoor unit; b: Mixing station; c: Hydraulic separator; d: Direct pump EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 217: Commissioning
224] 10.5.11 User profile [B] User profile: See "To change the user permission level" [ 132]. [B] User profile Installer settings Commissioning User profile Operation Malfunctioning EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 218: Operation
The user can then control the system via the ONECTA app. This needs the following components in case of WLAN cartridge: EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 219 Mode: Turn AP mode ON (= WLAN cartridge/module active as access point) or OFF. Code Description [D.1] Enable AP mode: ▪ ▪ Reboot: Reboot the WLAN cartridge/module. Code Description [D.2] Reboot the gateway: ▪ Back ▪ EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 220 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 221: 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. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 222: Menu Structure: Overview Installer Settings
(*) Only applicable in Swedish language. INFORMATION Solar kit settings are shown but are NOT applicable for this unit. Settings shall NOT be used or changed. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 223 Configuration INFORMATION Depending on the selected installer settings and unit type, settings will be visible/ invisible. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 224: 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 the commissioning and hand-over to the user.
Page 225: Precautions When Commissioning
There are NO damaged components or squeezed pipes on the inside of the indoor and outdoor units. Backup heater circuit breaker F1B (field supply) is turned ON. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 226: Checklist During Commissioning
— reach the minimum required flow rate + 2 l/min. During pump test run, the unit can operate below the minimum required flow rate. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 227: Air Purge Function
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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 228: Operation Test Run
This timeframe is then used in the logic to activate the backup heater (see "Equilibrium" [ 198]). When (part of) the emitters are closed, this might result in more frequent backup heater operation. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 229: Actuator Test Run
Perform an actuator test run to confirm the operation of the different actuators. For example, when you select Pump, a test run of the pump will start. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 230: Underfloor Heating Screed Dryout
The underfloor heating (UFH) screed dryout function is used for drying out the screed of an underfloor heating system during the construction of the building. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 231 Scroll through the schedule. ▪ Adjust the duration (between 1 and 72 hours) and temperatures (between 15°C and 55°C). 4 Press the left dial to save the schedule. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 232 2 Select OK to confirm. To read out the status of an underfloor heating screed dryout Conditions: You are performing an underfloor heating screed dryout. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 233 If the UFH screed dryout program was stopped due to a power failure and the power resumes, the program will automatically restart the last implemented step. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 234: 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. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 235: Maintenance And Service
PCB. 13.2 Yearly maintenance 13.2.1 Yearly maintenance outdoor unit: overview Check the following at least once a year: ▪ Heat exchanger ▪ Water filter EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 236: Yearly Maintenance Outdoor Unit: Instructions
Water pressure Keep water pressure above 1 bar. If it is lower, add water. Magnetic filter/dirt separator a Screw connection b Magnetic sleeve c Drain valve EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 237 Pressure relief valve hose Check whether the pressure relief valve hose is positioned appropriately to drain the water. See "7.4.4 To connect the drain hose to the drain" [ 81]. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 238 NOTICE When using means for descaling or chemical disinfection, make sure water quality still complies with EU directive 2020/2184. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 239: To Drain The Domestic Hot Water Tank
3 Close the valve (if equipped) of the water circuit towards the expansion vessel. 4 Remove the cap on the bottom of the magnetic filter/dirt separator. 5 Connect a drain hose to the bottom of the water filter. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 240: To Clean The Water Filter In Case Of Trouble
Bottom part to be unscrewed b Water filter housing 3 Remove the strainer and the rolled‑up filter from the water filter housing and clean with water. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 241: To Install The Water Filter
Make sure to open the valve (if equipped) towards the expansion vessel, otherwise the overpressure will be generated. 5 Open the stop valves and add water to the water circuit if needed. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 242: Troubleshooting
If you are unable to find the cause of the problem, call your dealer. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 243: Solving Problems Based On Symptoms
Make sure that the water volume in the too low installation is above the minimum required value (see "8.1.3 To check the water volume and flow rate" [ 85]). EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 244: Symptom: Hot Water Does Not Reach The Desired Temperature
14.3.4 Symptom: The system is making gurgling noises after commissioning Possible cause Corrective action There is air in the system. Purge air from the system. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 245: Symptom: The Pump Is Blocked
If you cannot deblock the rotor of the pump with this method, you will need to disassemble the pump and turn the rotor by hand. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 246: Symptom: The Pump Is Making Noise (Cavitation)
0 m. The maximum water circuit head is 10 m. Check the installation requirements. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 247: Symptom: The Water Pressure Relief Valve Leaks
> Backup heater > Equilibrium temperature [5‑01] There is air in the system. Purge air manually or automatically. See the air purge function in the chapter "11 Commissioning" [ 224]. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 248: Symptom: The Pressure At The Tapping Point Is Temporarily Unusually High
The disinfection operation was stopped Do NOT stop tank operation during manually: [C.3] Operation > Tank was disinfection. turned off during disinfection. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 249: Solving Problems Based On Error Codes
Leaving water temperature sensor problem 81-01 Mixed water thermistor abnormality. 81-06 Entering water temperature thermistor abnormality (indoor unit) 89-01 Heat exchanger freeze-up protection activated during defrost (error) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 250 High pressure sensor abnormality E4-00 Abnormal suction pressure E5-00 OU: Overheat of inverter compressor motor E6-00 OU: Compressor startup defect E7-00 OU: Malfunction of outdoor unit fan motor EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 251 Malfunction of refrigerant liquid thermistor JA-00 OU: Malfunction of high pressure sensor JC-00 Low pressure sensor abnormality JC-01 Evaporator pressure abnormality L1-00 Malfunction of INV PCB EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 252 Indoor unit, outdoor unit matching problem UA-16 Extension/hydro communication problem UA-17 Tank type problem UA-21 Extension/hydro mismatch problem UF-00 Reversed piping or bad communication wiring detection. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 253 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 254: Disposal
78] 1 Make sure the unit is not running. 2 Activate the recovery mode (see "15.1.2 Recovery mode" [ 256]). Result: The unit opens the valves (Y*). EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 255: 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. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 256: Recovery Mode
Press BS3 once. Press BS2 once. Press BS3 once. Press BS3 once. The flashing H1P indicates the recovery mode has been correctly selected and is activated. EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 257 / 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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 258: 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 259: Service Space: Outdoor Unit
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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 260: 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) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 261: Piping Diagram: Indoor Unit
R1T Thermistor (water IN) R2T Thermistor (backup heater – water OUT) R5T, R8T Thermistor (tank) S1L Flow switch Screw connection Flare connection Quick coupling Brazed connection EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 262: Wiring Diagram: Outdoor Unit
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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 263 Light-emitting diode (service monitor is orange) HAP (A1P) Light-emitting diode (service monitor is green) K1R (A1P) Magnetic relay (Y1S) K1R (A4P) Magnetic relay (E1HHEX~E3HHEX) K2R (A1P) Magnetic relay (Y2S) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 264 Insulated Gate Bipolar Transistor (IGBT) X1M, X2M Terminal strip Electronic expansion valve (main) Electronic expansion valve (injection) Solenoid valve (4‑way valve) Solenoid valve (low pressure bypass) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 265 Earth leakage circuit breaker (30 mA) (field supply) R1, R2 (A2P) Resistor Thermistor (outdoor air) Thermistor (compressor discharge) Thermistor (compressor suction) Thermistor (air heat exchanger, distributor) Thermistor (air heat exchanger, middle) EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 266 Solenoid valve (4‑way valve) Solenoid valve (low pressure bypass) Solenoid valve (hot gas bypass) Solenoid valve (liquid injection) Z1C~Z10C Noise filter (ferrite core) Z1F~Z4F (A1P, A3P) Noise filter EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 267: Wiring Diagram: Indoor Unit
Safety thermostat Smart Grid Smart Grid WLAN module WLAN module WLAN cartridge WLAN cartridge Bizone mixing kit Bizone mixing kit Main LWT Main leaving water temperature EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 268 Relay on PCB # Domestic hot water pump # 2-way valve for cooling mode PC (A15P) * Power circuit PHC1 (A4P) * Optocoupler input circuit EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 269 Use normal kWh rate power supply for indoor unit indoor unit (2) Backup heater power supply (2) Backup heater power supply Only for *** Only for *** EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 270 (7) Option PCBs Alarm output Alarm output Changeover to ext. heat source Changeover to external heat source Max. load Maximum load Min. load Minimum load EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 271 Only for heat pump convector Only for wired On/OFF thermostat Only for wired ON/OFF thermostat Only for wireless On/OFF thermostat Only for wireless ON/OFF thermostat EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 272 4 core signal signal main & add: X2M: 3-4 Only for Human Comfort Interface 2 core 2×0.75 X5M: 11-12 A14P: P1-P2 user interface communication 4D133216B EPRA14~18D + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 273: Esp Curve: Indoor Unit
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 + ETVH/X16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644737-1A – 2022.03...
Page 274: 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 275: Field Settings Table
1/13 Field settings table Applicable indoor units ETBH16E▲6V▼ ETBH16E▲9W▼ ETBX16E▲6V▼ ETBX16E▲9W▼ ETVH16S18E▲6V▼ ETVH16S23E▲6V▼ ETVH16S18E▲9W▼ ETVH16S23E▲9W▼ ETVX16S18E▲6V▼ ETVX16S23E▲6V▼ ETVX16S18E▲9W▼ ETVX16S23E▲9W▼ ETVH16SU18E▲6V▼ ETVH16SU23E▲6V▼ Notes (*1) *6V* (*2) *9W* (*3) ETB* (*4) ETV* (*5) *X* (*6) *H* (*7) *SU* (*8) E model (*E▲6V/9W) (*9) E7 model (*E▲6V7/9W7) ▲...
Page 276 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 277 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 278 4/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [D-03] Increase around 0°C 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 [9-04] Overshoot...
Page 279 5/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value 9.1.3.3 [E-05] Domestic hot water No DHW (*3) [E-06] EKHW, small volume (*3) [E-07] Integrated (*4) EKHW, big volume (*3) EKHWP (*3) 3rd party, small coil (*3) 3rd party, big coil (*3)
Page 280 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.A [0-04] Leaving water value for high ambient temp. for LWT add zone cooling WD curve. [9-07]~[9-08]°C, step: 1°C [2-0C]=0 18°C [2-0C]=1...
Page 281 7/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [4-04] Water pipe freeze prevention 0: Intermittent 1: Continuous 2: Off └─ Benefit kWh power supply 9.8.2 [D-00] Allow heater 0: None 1: BSH only...
Page 282 8/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [0-00] Leaving water value for high ambient temp. for LWT add zone heating WD curve. [9-05]~min(45,[9-06])°C, step: 1°C 35°C [0-01] Leaving water value for low ambient temp.
Page 283 9/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [2-03] What is the disinfection target temperature? [E-07]≠ 55~75°C, step: 5°C 70°C [E-07]=1 : 60°C 60°C [2-04] How long must the tank temperature be maintained? [E-07]≠1: 5~60 min, step: 5 min 10 min [E-07]=1: 40~60 min, step: 5 min...
Page 284 10/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [5-08] What is the requested limit for DI4? 0~50 A, step: 1 A 50 A [5-09] What is the requested limit for DI1? 0~20 kW, step: 0,5 kW 20 kW [5-0A]...
Page 285 11/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [8-0C] [8-0D] [9-00] What is the maximum desired LWT for main zone in heating? [2-0C]=2: 37~70, step: 1°C 70°C 37~68, step: 1°C (*7) 68°C...
Page 286 12/13 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [D-07] Is a solar kit connected? 0: No 1: Yes [D-08] Is an external kWh meter used for power measurement? 0: No 1: 0,1 pulse/kWh 2: 1 pulse/kWh...
Page 287 13/13...
Page 288 4P644737-1A 2022.03 Verantwortung für Energie und Umwelt...

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