Page 1 Installer reference guide Daikin Altherma 3 H HT F https://daikintechnicaldatahub.eu EPRA14D▲V3▼ ETVZ16S18E▲6V▼ EPRA16D▲V3▼ ETVZ16S23E▲6V▼ EPRA18D▲V3▼ ETVZ16S18E▲9W▼ ETVZ16S23E▲9W▼ EPRA14D▲W1▼ ▲= A, B, C, …, Z EPRA16D▲W1▼ ▼= , , 1, 2, 3, …, 9 EPRA18D▲W1▼...
Page 2: Table Of Contents
About opening the units..........................57 7.2.2 To open the outdoor unit..........................58 7.2.3 To remove the transportation stay ........................ 58 7.2.4 To attach the compressor cover piece ......................59 Installer reference guide EPRA14~18D + ETVZ16S18+23E Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 3 Configuration wizard............................... 126 10.3 Possible screens ................................128 10.3.1 Possible screens: Overview ..........................128 10.3.2 Home screen..............................129 10.3.3 Main menu screen............................131 10.3.4 Menu screen..............................132 EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 4 Solving problems based on error codes ......................... 243 14.4.1 To display the help text in case of a malfunction ..................243 14.4.2 Error codes of the unit ........................... 243 15 Disposal Installer reference guide EPRA14~18D + ETVZ16S18+23E Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 5 Wiring diagram: Outdoor unit ............................256 16.5 Wiring diagram: Indoor unit ............................261 16.6 ESP curve: Indoor unit..............................267 17 Glossary 18 Field settings table EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 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
DANGER: RISK OF EXPLOSION Indicates a situation that could result in explosion. WARNING Indicates a situation that could result in death or serious injury. WARNING: FLAMMABLE MATERIAL EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 8: Installer Reference Guide At A Glance
Various installation setups of the system Unit installation What to do and know to install the system, including information on how to prepare for an installation EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 16: Specific Installer Safety Instructions
(example: open flames, an operating gas appliance or an operating electric heater). WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation and are executed ONLY by authorised persons. "7.2 Opening and closing the units" [ 57])
Page 17 ▪ galvanized pipes are NOT used in glycol systems since the presence may lead to the precipitation of certain components in the glycol's corrosion inhibitor. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 18 See: ▪ "7.3.6 To install the discharge grille" [ 67] ▪ "7.3.7 To remove the discharge grille, and put the grille in safety position" [ 69] EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 19 Commissioning method MUST be in accordance with the instructions from this manual. See "11 Commissioning" [ 215]. Maintenance and service (see "13 Maintenance and service" [ 228]) DANGER: RISK OF ELECTROCUTION EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 21 See: ▪ "7.3.6 To install the discharge grille" [ 67] ▪ "7.3.7 To remove the discharge grille, and put the grille in safety position" [ 69] EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 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. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 23 After unpacking, carry the unit using the slings attached to the unit. See also: ▪ "4.1.2 To unpack the outdoor unit" [ 24] ▪ "7.3.4 To install the outdoor unit" [ 65] ±150 4× EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 24: To Unpack The Outdoor Unit
About the box 4.1.2 To unpack the outdoor unit EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 25: To Remove The Accessories From The Outdoor Unit
Installation manual – Discharge grille NOTICE Unpacking. When you remove the top packaging/accessories, hold the box containing the discharge grille to prevent it from falling. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 26: Indoor Unit
Sealing tape for low voltage wiring intake 4.2.3 To handle the indoor unit Use the handles at the back and at the bottom to carry the unit. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 27 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 28: About The Units And Options
European hydro-split outdoor pair heat pump High water temperature – ambient zone 2 (see operation range) Refrigerant R32 Capacity class Model series Power supply Model series EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 29: Identification Label: Indoor Unit
Use one of the following models: ▪ EKMST1 with flange feet: to install the outdoor unit on a concrete foundation where drilling is allowed. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 30: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 31 ▪ The Human Comfort Interface (HCI) used as room thermostat can only be used in combination with the user interface connected to the indoor unit. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 32 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" [ 117]. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 33: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 34: Setting Up The Space Heating/Cooling System
Automatic. NOTICE An overpressure bypass valve can be integrated in the system. Keep in mind that this valve might not be shown on the illustrations. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 35: Multiple Rooms - Two Lwt Zones
In cooling: 12°C In cooling mode, you can allow the underfloor heating (main zone) to provide refreshment (no real cooling), or NOT allow it. See setup below. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 36 ▪ Other rooms external room thermostat functionality Number of water temperature zones: 1 (Dual zone): Main + additional ▪ #: [4.4] ▪ Code: [7-02] EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 37: Setting Up An Auxiliary Heat Source For Space Heating
▪ During heating operation of the auxiliary boiler, the auxiliary boiler operates to achieve the desired water temperature set via the auxiliary boiler controller. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 38 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 39 To prevent freeze-up of the water piping, the auxiliary gas boiler must have a fixed setpoint ≥55°C, or a weather-dependent setpoint ≥T (°C) –30 –25 –20 –15 –10 –5 (°C) Outdoor temperature Minimum weather-dependent setpoint for auxiliary gas boiler EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 40: Setting Up The Domestic Hot Water Tank
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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 41 EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 42: Setup And Configuration - Dhw Tank
For more information, see "10 Configuration" [ 123]. ▪ You can program a schedule to control the DHW pump via the user interface. For more information, see the user reference guide. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 43: Dhw Pump For Disinfection
Via the user interface, you can read out the following energy data: Produced heat Consumed energy ▪ You can read out the energy data: For space heating For space cooling For domestic hot water production EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 44: Produced Heat
Setup and configuration: To get accurate energy data, measure the capacity (resistance measurement) and set the capacity via the user interface for the backup heater (step 1). EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 45: Normal Kwh Rate Power Supply
▪ Three-phase outdoor unit Three-phase ▪ Backup heater supplied from a three- phase grid, i.e. the backup heater model is: *6V (6T1: 3~ 230 V) *9W (3N~ 400 V) EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 46: Preferential Kwh Rate Power Supply
Power meter 2: Measures the rest (i.e. indoor unit and backup heater). Setup ▪ Connect power meter 1 to X5M/5 and X5M/6. ▪ Connect power meter 2 to X5M/3 and X5M/4. "9.3.4 To connect the electricity meters" [ 109]. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 47: Setting Up The Power Consumption Control
Allows you to limit the power consumption of the entire heat pump system (sum of indoor unit and backup heater) via 4 digital inputs. ▪ Limitation of power in kW or current in A. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 48: Permanent Power Limitation
"Power consumption control" [ 200]): Select continuous limitation mode Select the type of limitation (power in kW or current in A) Set the desired power limitation level EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 49: 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 50: Power Limitation Process
(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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 51: Setting Up An External Temperature Sensor
Setup: For installation instructions, see the installation manual of the remote indoor sensor, and the addendum book for optional equipment. ▪ Configuration: Select room sensor [9.B]. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 52 To protect the outdoor unit, the internal sensor of the outdoor unit is always used. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 53: Unit Installation
The appliance shall be stored in a room without continuously operating ignition sources (example: open flames, an operating gas appliance or an operating electric heater). EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 54: Installation Site Requirements Of The Outdoor Unit
It is NOT recommended to install the unit in the following places because it may shorten the life of the unit: ▪ Where the voltage fluctuates a lot ▪ In vehicles or vessels EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 55 The appliance shall be stored so as to prevent mechanical damage and in a well- ventilated room without continuously operating ignition sources (example: open flames, an operating gas appliance or an operating electric heater). EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 56: Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates
Unit installation WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation and are executed ONLY by authorised persons. 7.1.2 Additional installation site requirements of the outdoor unit in cold climates Protect the outdoor unit against direct snowfall and take care that the outdoor unit is NEVER snowed up.
Page 57: 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 58: To Open The Outdoor Unit
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" [ 58]. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 59: 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" [ 58]). EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 60: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 61 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 62: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 63: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 64: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 65: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 66: 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" [ 94]. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 67: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 68 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 69: 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" [ 69] 1 Remove the upper part of the discharge grille. 4× 2 Remove the lower part of the discharge grille. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 70 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 71: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 72: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 73: Piping Installation
Deformation of the piping can cause malfunctioning of the unit. ▪ Connecting piping – Tools. Only use appropriate tooling to handle brass, which is a soft material. If NOT, pipes will get damaged. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 74 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 75 ▪ Hygienic measures. The installation must be in compliance with the applicable legislation and may require additional hygienic installation measures. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 76: Formula To Calculate The Expansion Vessel Pre-Pressure
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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 77 Use the following graph to determine the maximum water volume for the calculated pre-pressure. A Pre-pressure (bar) B Maximum water volume (l) Water Water + glycol Example: Maximum water volume and expansion vessel pre-pressure EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 78 NOT be displayed on the user interface. In this case, the minimum flow rate can be checked by way of the pump test (check that the user interface does NOT display error 7H). EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 79: Changing The Pre-Pressure Of The Expansion Vessel
Because the total water volume (250 l) is more than the default water volume (200 l), the pre-pressure must be decreased. ▪ The required pre-pressure is: Pg = (0.3+(H/10)) bar = (0.3+(0/10)) bar = 0.3 bar EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 80: Connecting Water Piping
Deformation of the piping can cause malfunctioning of the unit. Outdoor unit 1 Connect the shut-off valve (with integrated filter) to the outdoor unit water inlet, using thread sealant. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 81 4 Connect the space heating/cooling field piping of both zones to the shut-off valves. 5 Connect the domestic hot water in and out pipes to the indoor unit. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 82 Mind the minimum flow rate when adjusting the overpressure bypass valve setting. See "8.1.3 To check the water volume and flow rate" [ 76] and "11.4.1 Minimum flow rate" [ 217]. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 83: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 84: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 85 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 86 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 87: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 88: 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 89: Electrical Installation
▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply with the applicable legislation. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 90: Guidelines When Connecting The Electrical Wiring
Place the round crimp-style terminal on the wire up to the covered part and fasten the terminal with the appropriate tool. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 91 1.47 ±10% M4 (earth) Indoor unit: Item Tightening torque (N•m) 2.45 ±10% 0.88 ±10% 0.88 ±10% 2.45 ±10% X10M 0.88 ±10% M4 (earth) 1.47 ±10% EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 92: About Electrical Compliance
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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 93: Overview Of Electrical Connections Except External Actuators
"9.2.1 To connect the electrical wiring to the outdoor unit" [ 94]. Interconnection cable Drain tube heater cable Connection for power saving function (only for V3 models) EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 94: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 95 ▪ 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 96 ▪ 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 97 ▪ 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 98 ▪ 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 99 ▪ 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 100: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 101: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 102 ▪ 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 103: To Connect The Main Power Supply
9.3.1 To connect the main power supply 1 Open the following (see "7.2.6 To open the indoor unit" [ 60]): 1 Top panel 2 User interface panel 3 Upper switch box cover EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 104 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 Connect X11Y to X11YB. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 105: To Connect The Backup Heater Power Supply
9.3.2 To connect the backup heater power supply Backup heater type Power supply Wires 1N~ 230 V (6V3) 2+GND 3~ 230 V (6T1) 3+GND 3N~ 400 V 4+GND [9.3] Backup heater EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 106 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 107 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 108: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 109: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 110: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 111: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 112: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 113: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 114: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 115: To Connect The Safety Thermostat (Normally Closed Contact)
3 Upper switch box cover Main zone Wires: 2×0.75 mm² — 2 Connect the safety thermostat (normally closed) cable to the appropriate terminals as shown in the illustration below. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 116 4 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 117: To Connect A Smart Grid
In case of low voltage Smart Grid contacts ▪ In case of high voltage Smart Grid contacts. This requires the installation of the Smart Grid relay kit (EKRELSG). EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 118 1 Open the following (see "7.2.6 To open the indoor unit" [ 60]): 1 Top panel 2 User interface panel 3 Upper switch box cover 2 Connect the wiring as follows: EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 119 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 120 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 121: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 122 Electrical installation Without low voltage cables With low voltage cables EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 123: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 124: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 125 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 126: To Connect The Pc Cable To The Switch Box
Use this wizard to set the most important initial settings for the unit to run properly. If required, you can afterwards configure more settings. You can change all these settings via the menu structure. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 127 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 128: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 129: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 130 Installed heat emitter type: Underfloor heating Fancoil unit Radiator Measured room temperature Leaving water temperature setpoint Holiday mode Holiday mode active EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 131: 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" [ 243] for more information. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 132: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 133: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 134: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 135 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 136 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 137 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 138: Weather-Dependent Curve
EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 139: 2-Points Curve
See "10.4.4 Using weather-dependent curves" [ 141]. 10.4.2 2-points curve Define the weather-dependent curve with these two setpoints: ▪ Setpoint (X1, Y2) ▪ Setpoint (X2, Y1) Example EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 140: Slope-Offset Curve
Examples Weather-dependent curve when slope is selected: Weather-dependent curve when offset is selected: EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 141: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 142 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 143: Settings Menu
To display the error code, open the menu screen and go to [0] Malfunctioning. Press more information about the error. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 144: Room
Example" [ 134]. 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" [ 134]. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 145 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 146 ▪ Outdoor ambient temperature drops below 6°C ▪ the temperature setpoint of the leaving water will be lowered. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 147 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 148: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 149 Define a heating temperature schedule for the main zone via [2.2] Heating schedule. "10.3.7 Schedule screen: Example" [ 134]. Cooling schedule Define a cooling temperature schedule for the main zone via [2.3] Cooling schedule. "10.3.7 Schedule screen: Example" [ 134]. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 150 10°C. Heating WD curve Set weather-dependent heating for the main zone (if [2.4]=1 or 2): EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 151 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 152 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 153 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 154 [2.8.1] [9-01] Heating minimum: ▪ 15°C~37°C [2.8.2] [9-00] Heating maximum: ▪ [2‑0C]=2 (emitter type main zone = radiator) 37°C~70°C ▪ Else: 37°C~55°C EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 155 ▪ [C‑07]=1 (External room thermostat) a User interface at indoor unit b External room thermostat at main zone c External room thermostat at additional zone EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 156 In heating, the target delta T will only be achieved after some operation time, when the setpoint is being reached, because of the big difference between leaving water temperature setpoint and inlet temperature at startup. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 157 (higher efficiency) If Modulation is disabled, set the desired leaving water temperature via [2] Main zone. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 158 LWT zone. ▪ activate the ON/OFF pump of the mixing valve station ONLY when there is demand. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 159: Additional Zone
139] and "10.4.3 Slope-offset curve" [ 140]. Code Description [2.E] ▪ 2-points ▪ Slope-Offset 10.5.4 Additional zone Overview The following items are listed in the submenu: EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 160 134]. Setpoint mode The setpoint mode of the additional zone can be independently set from the setpoint mode of the main zone. "Setpoint mode" [ 150]. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 161 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 162 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 163 External room thermostat,or Room thermostat. Ext thermostat type Only applicable in external room thermostat control. Also see "10.5.3 Main zone" [ 148]. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 164: Space Heating/Cooling
This unit is a heating only model. Therefore, all references to cooling in this document are NOT applicable. Overview The following items are listed in the submenu: EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 165 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 166 If the outdoor temperature is between the Space heating off temperature and the Space cooling off temperature, the operation mode remains unchanged. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 167 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 168 ▪ the zone with the highest water temperature is configured as the additional zone. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 169 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 170 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 171 ▪ 8: 60% pump speed during sampling The maximum values depend on the unit type: [9-0D]/[9-0E]=0 [9-0D]/[9-0E]=1/5 a (kPa) a (kPa) b (l/min) b (l/min) EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 172 0°C.This compensation can be selected when using an absolute or a weather dependent desired temperature (see illustration below). 0°C 0°C a Absolute desired LWT b Weather dependent desired LWT EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 173: 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" [ 144]. 10.5.6 Tank Overview The following items are listed in the submenu: EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 174 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 175 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 176 ▪ 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 177 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 178 EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 179 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 180 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 181: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 182 To use quiet mode 1 Go to [7.4.1]: User settings > Quiet > Mode. 2 Do one of the following: — EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 183 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 184 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 185 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 186: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 187: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 188 • [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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 189 ▪ 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 190 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 191 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 192 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 193 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 194 [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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 195 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 196 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 197 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 198 [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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 199 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 200 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 201 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 202 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 203 OFF. Set this value in case an auxiliary boiler is used. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 204 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 205 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 206 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 207 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 208 ▪ Back ▪ To export MMI settings 1 Open the user interface panel and insert a USB memory stick. — EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 209: Commissioning
In the operation menu, you can separately enable or disable functionalities of the unit. Code Description [C.2] Space heating/cooling: ▪ 0: Off ▪ 1: On EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 210: Wlan
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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 211 ONECTA app. Remove from cloud: Remove the WLAN cartridge/module from the cloud. Code Description [D.4] Remove from cloud: ▪ ▪ EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 212 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 213: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 214: Menu Structure: Overview Installer Settings
Solar kit settings are shown but are NOT applicable for this unit. Settings shall NOT be used or changed. INFORMATION Depending on the selected installer settings and unit type, settings will be visible/ invisible. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 215: Commissioning
NOT applicable. 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 216: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 217: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 218: Air Purge Function
To air purge the domestic hot water tank circuit, choose [A.3.1.5.2] Circuit=Tank at the start of the manual air purge of the main zone or additional zone. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 219 Bypassed Pump main zone Pump additional zone Example: Air purge on main zone: 45°C 35°C 45°C Example: Air purge on additional zone: 45°C 35°C 45°C EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 220 124]. 2 Go to [A.3]: Commissioning > Air purge. 3 In the menu, set Type = Automatic. 4 Select Start air purge. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 221: Operation Test Run
Result: The test run starts. It stops automatically when ready (±30 min). To stop the test run manually: — 1 In the menu, go to Stop test run. 2 Select OK to confirm. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 222: Actuator Test Run
1 In the menu, go to Stop test run. 2 Select OK to confirm. Possible actuator test runs ▪ Backup heater 1 test ▪ Backup heater 2 test ▪ Pump test EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 223: Underfloor Heating Screed Dryout
1 the duration in hours, up to 72 hours, 2 the desired leaving water temperature, up to 55°C. Example: 24h (1) 36h (2) 35°C (2) 25°C (1) T Desired leaving water temperature (15~55°C) EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 224 [D‑01]=0 ▪ [4‑08]=0 ▪ [4‑01]≠1 Steps Conditions: An underfloor heating screed dryout schedule has been programmed. "To program an underfloor heating screed dryout schedule" [ 223]. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 225 When the program is stopped due to an error, an operation switch-off, or a power failure, you can read out the underfloor heating screed dryout status: 1 Go to [A.4.3]: Commissioning > UFH screed dryout > Status EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 226 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 227: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 228: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 229: Yearly Maintenance Outdoor Unit: Instructions
Handle the water filters with care. Do NOT use excessive force when you reinsert the water filters so as NOT to damage the water filters mesh. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 230 ▪ ALWAYS first unscrew the drain cap, and connect a drain hose to the bottom of the water filter, then open the drain valve. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 231 Using an ohmmeter, check if contactors K1M, K2M and K3M operate correctly. All contacts of these contactors must be in open position when the power is turned OFF. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 232: To Drain The Domestic Hot Water Tank
▪ "13.4.1 To remove the water filter" [ 233] ▪ "13.4.2 To clean the water filter in case of trouble" [ 233] ▪ "13.4.3 To install the water filter" [ 234] EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 233: To Remove The Water Filter
Opening the magnetic filter/dirt separator is ONLY required in case of severe issues. Preferably this action is never to be done during the complete lifetime of the magnetic filter/dirt separator. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 234: To Install The Water Filter
Check the condition of the O-rings and replace if needed. Apply water or silicon grease to the O-rings before installation. 1 Install the water filter in the correct location. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 235 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 236: Troubleshooting
Carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring. 14.2 Precautions when troubleshooting DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 237: Solving Problems Based On Symptoms
In some cases, it is normal that the unit decides to use a low water flow. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 238: Symptom: Hot Water Does Not Reach The Desired Temperature
Change the schedule to not start both disinfection) and space heating operation modes at the same moment. operation are scheduled to start at the same time. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 239: Symptom: The System Is Making Gurgling Noises After Commissioning
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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 240: Symptom: The Pump Is Making Noise (Cavitation)
0 m. The maximum water circuit head is 10 m. Check the installation requirements. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 241: 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" [ 215]. EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 242: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 243: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 244 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 245 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 246 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 247 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 248: Disposal
69] 1 Make sure the unit is not running. 2 Activate the recovery mode (see "15.1.2 Recovery mode" [ 250]). Result: The unit opens the valves (Y*). EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 249: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 250: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 251 / 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 252: Technical Data
This unit is a heating only model. Therefore, all references to cooling in this document are NOT applicable. 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 253: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 254: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 255: Piping Diagram: Indoor Unit
Magnetic filter/dirt separator S1L Flow switch i Safety valve Screw connection j Air purge Flare connection k Drain valve Quick coupling l Pump (additional/direct zone) Brazed connection EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 256: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 257 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 258 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 259 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 260 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 261: Wiring Diagram: Indoor Unit
Safety thermostat Smart Grid Smart Grid WLAN module WLAN module WLAN cartridge WLAN cartridge Main LWT Main leaving water temperature On/OFF thermostat (wired) ON/OFF thermostat (wired) EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 262 Relay 3-way valve bypass Relay 3-way valve flow K*R (A1P, A4P) Relay on PCB # Domestic hot water pump # 2-way valve for cooling mode EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 263 PCB) supplied by PCB) Switch box Use normal kWh rate power supply for Use normal kWh rate power supply for indoor unit indoor unit EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 264 Smart Grid photovoltaic power pulse meter Switch box (7) Option PCBs (7) Option PCBs Alarm output Alarm output Changeover to ext. heat source Changeover to external heat source EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 265 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 266 Power limitation demand input 4 A8P: X801M: 4-5 signal Only for Human Comfort Interface 2 core 2×0.75 X5M: 11-12 A14P: P1-P2 user interface communication 4D133218B EPRA14~18D + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 267: 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 + ETVZ16S18+23E Installer reference guide Daikin Altherma 3 H HT F 4P644739-1A – 2022.03...
Page 268: 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 269: Field Settings Table
1/12 Field settings table Applicable indoor units ETVZ16S18E▲6V▼ ETVZ16S23E▲6V▼ ETVZ16S18E▲9W▼ ETVZ16S23E▲9W▼ Notes (*1) *6V* (*2) *9W* (*3) Only applicable for models where cooling is possible (*4) E model (*E▲6V/9W) (*5) E7 model (*E▲6V7/9W7) ▲ = A, B, C, …, Z ▼...
Page 270 2/12 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 271 3/12 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value 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 0: No 1: Yes 2.D.2 [F-0C]...
Page 272 4/12 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 273 5/12 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value 9.1.4.2 [4-0A] Configuration 0: 1 1: 1/1+2 (*1) (*2) 2: 1/2 3: 1/2 + 1/1+2 in emergency 9.1.4.3 [6-03] Capacity step 1 0~10kW, step: 0,2kW...
Page 274 6/12 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value 9.2.2 [D-02] DHW pump 0: No DHW pump 1: Instant hot water 2: Disinfection 3: Circulation 4: Circulation and disinfection 9.2.4 [D-07] Solar...
Page 275 7/12 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value 9.9.9 [5-09] Limit 1 0~20 kW, step: 0,5 kW 20 kW 9.9.A [5-0A] Limit 2 0~20 kW, step: 0,5 kW 20 kW 9.9.B [5-0B]...
Page 276 8/12 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [1-02] Leaving water value for low ambient temp. for LWT main zone heating WD curve. [9-01]~[9-00], step: 1°C [2-0C]=0 35°C [2-0C]=1...
Page 277 9/12 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [3-0B] [3-0C] [4-00] What is the BUH operation mode? 0: Disabled 1: Enabled 2: Only DHW [4-01] Which electric heater has priority? 0: None 1: BSH 2: BUH...
Page 278 10/12 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [7-02] How many leaving water temperature zones are there? 0: 1 LWT zone 1: 2 LWT zones [7-03] [7-04] [7-05] Boiler efficiency...
Page 279 11/12 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [C-04] Bivalent hysteresis temperature. 2~10°C, step 1°C 3°C [C-05] What is the thermo request contact type for the main zone? 0: - 1: 1 contact 2: 2 contacts...
Page 280 12/12 Installer setting at variance with Field settings table default value Breadcrumb Field code Setting name Range, step Date Value Default value [F-0A] [F-0B] Close shut-off valve during thermo OFF? 0: No 1: Yes [F-0C] Close shut-off valve during cooling? 0: No 1: Yes [F-0D]...
Page 284 4P644739-1A 2022.03 Verantwortung für Energie und Umwelt...

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