Daikin Altherma 3 H HT EPRA18DAV3 How to use

Installer reference guide
Daikin Altherma 3 H HT F
EPRA14DAV3
EPRA16DAV3
EPRA18DAV3
EPRA14DAW1
EPRA16DAW1
EPRA18DAW1
ETVH16S18DA6V(G)
ETVH16S23DA6V(G)
ETVH16S18DA9W(G)
ETVH16S23DA9W(G)
ETVX16S18DA6V(G)
ETVX16S23DA6V(G)
ETVX16S18DA9W(G)
ETVX16S23DA9W(G)
https://daikintechnicaldatahub.eu

Table of contents
Installer reference guide
2
EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
Table of contents
1 General safety precautions 6
1.1 About the documentation .............................................................................................................................................. 6
1.1.1 Meaning of warnings and symbols ................................................................................................................ 6
1.2 For the installer............................................................................................................................................................... 7
1.2.1 General ........................................................................................................................................................... 7
1.2.2 Installation site ............................................................................................................................................... 8
1.2.3 Refrigerant — in case of R410A or R32.......................................................................................................... 9
1.2.4 Water .............................................................................................................................................................. 10
1.2.5 Electrical ......................................................................................................................................................... 11
2 About the documentation 13
2.1 About this document ...................................................................................................................................................... 13
2.2 Installer reference guide at a glance .............................................................................................................................. 14
3 About the box 16
3.1 Overview: About the box ................................................................................................................................................ 16
3.2 Outdoor unit ................................................................................................................................................................... 16
3.2.1 To handle the outdoor unit............................................................................................................................ 16
3.2.2 To unpack the outdoor unit ........................................................................................................................... 18
3.2.3 To remove the accessories from the outdoor unit........................................................................................ 19
3.3 Indoor unit ...................................................................................................................................................................... 20
3.3.1 To unpack the indoor unit.............................................................................................................................. 20
3.3.2 To remove the accessories from the indoor unit .......................................................................................... 20
3.3.3 To handle the indoor unit............................................................................................................................... 20
4 About the units and options 21
4.1 Overview: About the units and options.......................................................................................................................... 21
4.2 Identification ................................................................................................................................................................... 21
4.2.1 Identification label: Outdoor unit .................................................................................................................. 21
4.2.2 Identification label: Indoor unit ..................................................................................................................... 22
4.3 Combining units and options.......................................................................................................................................... 22
4.3.1 Possible combinations of indoor unit and outdoor unit................................................................................ 22
4.3.2 Possible options for the outdoor unit............................................................................................................ 23
4.3.3 Possible options for the indoor unit............................................................................................................... 23
5 Application guidelines 26
5.1 Overview: Application guidelines ................................................................................................................................... 26
5.2 Setting up the space heating/cooling system ................................................................................................................ 27
5.2.1 Single room..................................................................................................................................................... 28
5.2.2 Multiple rooms – OneLWT zone ................................................................................................................... 32
5.2.3 Multiple rooms – TwoLWT zones.................................................................................................................. 36
5.3 Setting up an auxiliary heat source for space heating ................................................................................................... 39
5.4 Setting up the domestic hot water tank......................................................................................................................... 42
5.4.1 System layout – Integrated DHW tank........................................................................................................... 42
5.4.2 Selecting the volume and desired temperature for the DHW tank .............................................................. 42
5.4.3 Setup and configuration – DHW tank ............................................................................................................ 44
5.4.4 DHW pump for instant hot water .................................................................................................................. 44
5.4.5 DHW pump for disinfection ........................................................................................................................... 45
5.5 Setting up the energy metering...................................................................................................................................... 45
5.5.1 Produced heat ................................................................................................................................................ 46
5.5.2 Consumed energy........................................................................................................................................... 46
5.5.3 Normal kWh rate power supply ..................................................................................................................... 47
5.5.4 Preferential kWh rate power supply.............................................................................................................. 48
5.6 Setting up the power consumption control ................................................................................................................... 49
5.6.1 Permanent power limitation.......................................................................................................................... 49
5.6.2 Power limitation activated by digital inputs .................................................................................................. 50
5.6.3 Power limitation process................................................................................................................................ 51
5.6.4 BBR16 power limitation.................................................................................................................................. 52
5.7 Setting up an external temperature sensor ................................................................................................................... 52
6 Unit installation 54
6.1 Preparing the installation site......................................................................................................................................... 54
6.1.1 Installation site requirements of the outdoor unit........................................................................................ 54
6.1.2 Additional installation site requirements of the outdoor unit in cold climates............................................ 57
6.1.3 Installation site requirements of the indoor unit .......................................................................................... 57
6.2 Opening and closing the units ........................................................................................................................................ 58

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EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
6.2.1 About opening the units................................................................................................................................. 58
6.2.2 To open the outdoor unit............................................................................................................................... 58
6.2.3 To remove the transportation stay................................................................................................................ 59
6.2.4 To close the outdoor unit............................................................................................................................... 59
6.2.5 To open the indoor unit ................................................................................................................................. 60
6.2.6 To lower the switch box on the indoor unit .................................................................................................. 62
6.2.7 To close the indoor unit ................................................................................................................................. 63
6.3 Mounting the outdoor unit............................................................................................................................................. 63
6.3.1 About mounting the outdoor unit ................................................................................................................. 63
6.3.2 Precautions when mounting the outdoor unit.............................................................................................. 63
6.3.3 To provide the installation structure ............................................................................................................. 63
6.3.4 To install the outdoor unit ............................................................................................................................. 64
6.3.5 To provide drainage........................................................................................................................................ 65
6.3.6 To install the discharge grille.......................................................................................................................... 67
6.3.7 To remove the discharge grille, and put the grille in safety position............................................................ 68
6.4 Mounting the indoor unit ............................................................................................................................................... 70
6.4.1 About mounting the indoor unit.................................................................................................................... 70
6.4.2 Precautions when mounting the indoor unit................................................................................................. 70
6.4.3 To install the indoor unit ................................................................................................................................ 70
6.4.4 To connect the drain hose to the drain ......................................................................................................... 71
7 Piping installation 73
7.1 Preparing water piping ................................................................................................................................................... 73
7.1.1 Water circuit requirements............................................................................................................................ 73
7.1.2 Formula to calculate the expansion vessel pre-pressure .............................................................................. 75
7.1.3 To check the water volume and flow rate ..................................................................................................... 75
7.1.4 Changing the pre-pressure of the expansion vessel...................................................................................... 78
7.1.5 To check the water volume: Examples .......................................................................................................... 78
7.2 Connecting water piping................................................................................................................................................. 79
7.2.1 About connecting the water piping ............................................................................................................... 79
7.2.2 Precautions when connecting the water piping............................................................................................ 79
7.2.3 To connect the water piping .......................................................................................................................... 79
7.2.4 To connect the recirculation piping ............................................................................................................... 82
7.2.5 To fill the water circuit ................................................................................................................................... 82
7.2.6 To protect the water circuit against freezing ................................................................................................ 82
7.2.7 To fill the domestic hot water tank................................................................................................................ 85
7.2.8 To insulate the water piping .......................................................................................................................... 86
8 Electrical installation 87
8.1 About connecting the electrical wiring .......................................................................................................................... 87
8.1.1 Precautions when connecting the electrical wiring....................................................................................... 87
8.1.2 Guidelines when connecting the electrical wiring......................................................................................... 88
8.1.3 About electrical compliance........................................................................................................................... 89
8.1.4 About preferential kWh rate power supply................................................................................................... 89
8.1.5 Overview of electrical connections except external actuators ..................................................................... 90
8.2 Connections to the outdoor unit.................................................................................................................................... 91
8.2.1 To connect the electrical wiring to the outdoor unit .................................................................................... 91
8.2.2 To reposition the air thermistor on the outdoor unit ................................................................................... 97
8.3 Connections to the indoor unit ...................................................................................................................................... 98
8.3.1 To connect the main power supply................................................................................................................ 101
8.3.2 To connect the backup heater power supply ................................................................................................ 103
8.3.3 To connect the shut-off valve ........................................................................................................................ 105
8.3.4 To connect the electricity meters .................................................................................................................. 106
8.3.5 To connect the domestic hot water pump .................................................................................................... 107
8.3.6 To connect the alarm output ......................................................................................................................... 108
8.3.7 To connect the space cooling/heating ON/OFF output................................................................................. 109
8.3.8 To connect the changeover to external heat source..................................................................................... 110
8.3.9 To connect the power consumption digital inputs........................................................................................ 111
8.3.10 To connect the safety thermostat (normally closed contact) ....................................................................... 112
8.4 After connecting the electrical wiring to the indoor unit .............................................................................................. 113
9 Configuration 115
9.1 Overview: Configuration................................................................................................................................................. 115
9.1.1 To access the most used commands ............................................................................................................. 116
9.2 Configuration wizard....................................................................................................................................................... 118
9.3 Possible screens .............................................................................................................................................................. 119
9.3.1 Possible screens: Overview ............................................................................................................................ 119
9.3.2 Home screen................................................................................................................................................... 120
9.3.3 Main menu screen.......................................................................................................................................... 123
9.3.4 Menu screen................................................................................................................................................... 124

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EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
9.3.5 Setpoint screen............................................................................................................................................... 124
9.3.6 Detailed screen with values ........................................................................................................................... 125
9.3.7 Schedule screen: Example.............................................................................................................................. 125
9.4 Weather-dependent curve ............................................................................................................................................. 130
9.4.1 What is a weather-dependent curve? ........................................................................................................... 130
9.4.2 2-points curve................................................................................................................................................. 130
9.4.3 Slope-offset curve........................................................................................................................................... 131
9.4.4 Using weather-dependent curves.................................................................................................................. 133
9.5 Settings menu ................................................................................................................................................................. 135
9.5.1 Malfunctioning ............................................................................................................................................... 135
9.5.2 Room............................................................................................................................................................... 135
9.5.3 Main zone ....................................................................................................................................................... 139
9.5.4 Additional zone............................................................................................................................................... 149
9.5.5 Space heating/cooling .................................................................................................................................... 155
9.5.6 Tank................................................................................................................................................................. 163
9.5.7 User settings ................................................................................................................................................... 170
9.5.8 Information..................................................................................................................................................... 175
9.5.9 Installer settings ............................................................................................................................................. 176
9.5.10 Commissioning ............................................................................................................................................... 194
9.5.11 Operation........................................................................................................................................................ 194
9.5.12 WLAN .............................................................................................................................................................. 195
9.6 Menu structure: Overview user settings........................................................................................................................ 197
9.7 Menu structure: Overview installer settings.................................................................................................................. 198
10 Commissioning 199
10.1 Overview: Commissioning .............................................................................................................................................. 199
10.2 Precautions when commissioning .................................................................................................................................. 200
10.3 Checklist before commissioning ..................................................................................................................................... 200
10.4 Checklist during commissioning ..................................................................................................................................... 201
10.4.1 Minimum flow rate......................................................................................................................................... 201
10.4.2 Air purge function........................................................................................................................................... 202
10.4.3 Operation test run.......................................................................................................................................... 203
10.4.4 Actuator test run ............................................................................................................................................ 204
10.4.5 Underfloor heating screed dryout ................................................................................................................. 205
11 Hand-over to the user 209
12 Maintenance and service 210
12.1 Overview: Maintenance and service .............................................................................................................................. 210
12.2 Maintenance safety precautions .................................................................................................................................... 210
12.3 Yearly maintenance ........................................................................................................................................................ 211
12.3.1 Yearly maintenance outdoor unit: overview ................................................................................................. 211
12.3.2 Yearly maintenance outdoor unit: instructions............................................................................................. 211
12.3.3 Yearly maintenance indoor unit: overview.................................................................................................... 211
12.3.4 Yearly maintenance indoor unit: instructions ............................................................................................... 211
12.4 To drain the domestic hot water tank............................................................................................................................ 214
12.5 About cleaning the water filter in case of trouble ......................................................................................................... 214
12.5.1 To remove the water filter ............................................................................................................................. 215
12.5.2 To clean the water filter in case of trouble.................................................................................................... 215
12.5.3 To install the water filter ................................................................................................................................ 216
13 Troubleshooting 218
13.1 Overview: Troubleshooting ............................................................................................................................................ 218
13.2 Precautions when troubleshooting ................................................................................................................................ 218
13.3 Solving problems based on symptoms........................................................................................................................... 219
13.3.1 Symptom: The unit is NOT heating or cooling as expected........................................................................... 219
13.3.2 Symptom: Hot water does NOT reach the desired temperature.................................................................. 220
13.3.3 Symptom: The compressor does NOT start (space heating or domestic water heating) ............................ 220
13.3.4 Symptom: The system is making gurgling noises after commissioning ........................................................ 220
13.3.5 Symptom: The pump is blocked..................................................................................................................... 221
13.3.6 Symptom: The pump is making noise (cavitation)......................................................................................... 221
13.3.7 Symptom: The pressure relief valve opens.................................................................................................... 222
13.3.8 Symptom: The water pressure relief valve leaks........................................................................................... 222
13.3.9 Symptom: The space is NOT sufficiently heated at low outdoor temperatures........................................... 223
13.3.10 Symptom: The pressure at the tapping point is temporarily unusually high................................................ 224
13.3.11 Symptom: Tank disinfection function is NOT completed correctly (AH-error)............................................. 224
13.4 Solving problems based on error codes ......................................................................................................................... 224
13.4.1 To display the help text in case of a malfunction .......................................................................................... 225
13.4.2 Error codes: Overview .................................................................................................................................... 225
14 Disposal 230

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EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
14.1 To recover refrigerant..................................................................................................................................................... 230
15 Technical data 232
15.1 Service space: Outdoor unit ........................................................................................................................................... 233
15.2 Piping diagram: Outdoor unit ......................................................................................................................................... 234
15.3 Piping diagram: Indoor unit ............................................................................................................................................ 235
15.4 Wiring diagram: Outdoor unit ........................................................................................................................................ 236
15.5 Wiring diagram: Indoor unit ........................................................................................................................................... 241
16 Glossary 247
17 Field settings table 248

1 | General safety precautions
Installer reference guide
6
EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
1 General safety precautions
In this chapter
1.1 About the documentation...................................................................................................................................................... 6
1.1.1 Meaning of warnings and symbols ........................................................................................................................ 6
1.2 For the installer....................................................................................................................................................................... 7
1.2.1 General ................................................................................................................................................................... 7
1.2.2 Installation site ....................................................................................................................................................... 8
1.2.3 Refrigerant — in case of R410A or R32 ................................................................................................................. 9
1.2.4 Water...................................................................................................................................................................... 10
1.2.5 Electrical ................................................................................................................................................................. 11
1.1 About the documentation
▪The original documentation is written in English. All other languages are
translations.
▪The precautions described in this document cover very important topics, follow
them carefully.
▪The installation of the system, and all activities described in the installation
manual and in the installer reference guide MUST be performed by an authorised
installer.
1.1.1 Meaning of warnings and symbols
DANGER
Indicates a situation that results in death or serious injury.
DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
DANGER: RISK OF BURNING/SCALDING
Indicates a situation that could result in burning/scalding because of extreme hot or
cold temperatures.
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
CAUTION
Indicates a situation that could result in minor or moderate injury.

1 | General safety precautions
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EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
NOTICE
Indicates a situation that could result in equipment or property damage.
INFORMATION
Indicates useful tips or additional information.
Symbols used on the unit:
Symbol Explanation
Before installation, read the installation and operation
manual, and the wiring instruction sheet.
Before performing maintenance and service tasks, read the
service manual.
For more information, see the installer and user reference
guide.
The unit contains rotating parts. Be careful when servicing or
inspecting the unit.
Symbols used in the documentation:
Symbol Explanation
Indicates a figure title or a reference to it.
Example: " 1–3 Figure title" means "Figure 3 in chapter 1".
Indicates a table title or a reference to it.
Example: " 1–3 Table title" means "Table 3 in chapter 1".
1.2 For the installer
1.2.1 General
If you are NOT sure how to install or operate the unit, contact your dealer.
DANGER: RISK OF BURNING/SCALDING
▪Do NOT touch the refrigerant piping, water piping or internal parts during and
immediately after operation. It could be too hot or too cold. Give it time to return
to normal temperature. If you must touch it, wear protective gloves.
▪Do NOT touch any accidental leaking refrigerant.
WARNING
Improper installation or attachment of equipment or accessories could result in
electrical shock, short-circuit, leaks, fire or other damage to the equipment. Only use
accessories, optional equipment and spare parts made or approved by Daikin.
WARNING
Make sure installation, testing and applied materials comply with applicable
legislation (on top of the instructions described in the Daikin documentation).

1 | General safety precautions
Installer reference guide
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EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
CAUTION
Wear adequate personal protective equipment (protective gloves, safety glasses,…)
when installing, maintaining or servicing the system.
WARNING
Tear apart and throw away plastic packaging bags so that nobody, especially
children, can play with them. Possible risk: suffocation.
WARNING
Provide adequate measures to prevent that the unit can be used as a shelter by small
animals. Small animals that make contact with electrical parts can cause
malfunctions, smoke or fire.
CAUTION
Do NOT touch the air inlet or aluminium fins of the unit.
CAUTION
▪Do NOT place any objects or equipment on top of the unit.
▪Do NOT sit, climb or stand on the unit.
NOTICE
Works executed on the outdoor unit are best done under dry weather conditions to
avoid water ingress.
In accordance with the applicable legislation, it might be necessary to provide a
logbook with the product containing at least: information on maintenance, repair
work, results of tests, stand-by periods,…
Also, at least, following information MUST be provided at an accessible place at the
product:
▪Instructions for shutting down the system in case of an emergency
▪Name and address of fire department, police and hospital
▪Name, address and day and night telephone numbers for obtaining service
In Europe, EN378 provides the necessary guidance for this logbook.
1.2.2 Installation site
▪Provide sufficient space around the unit for servicing and air circulation.
▪Make sure the installation site withstands the weight and vibration of the unit.
▪Make sure the area is well ventilated. Do NOT block any ventilation openings.
▪Make sure the unit is level.
Do NOT install the unit in the following places:
▪In potentially explosive atmospheres.
▪In places where there is machinery that emits electromagnetic waves.
Electromagnetic waves may disturb the control system, and cause malfunction of
the equipment.
▪In places where there is a risk of fire due to the leakage of flammable gases
(example: thinner or gasoline), carbon fibre, ignitable dust.

1 | General safety precautions
Installer reference guide
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EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
▪In places where corrosive gas (example: sulphurous acid gas) is produced.
Corrosion of copper pipes or soldered parts may cause the refrigerant to leak.
1.2.3 Refrigerant — in case of R410A or R32
If applicable. See the installation manual or installer reference guide of your
application for more information.
NOTICE
Make sure refrigerant piping installation complies with applicable legislation. In
Europe, EN378 is the applicable standard.
NOTICE
Make sure the field piping and connections are NOT subjected to stress.
WARNING
During tests, NEVER pressurize the product with a pressure higher than the
maximum allowable pressure (as indicated on the nameplate of the unit).
WARNING
Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks,
ventilate the area immediately. Possible risks:
▪Excessive refrigerant concentrations in a closed room can lead to oxygen
deficiency.
▪Toxic gas might be produced if refrigerant gas comes into contact with fire.
DANGER: RISK OF EXPLOSION
Pump down – Refrigerant leakage. If you want to pump down the system, and there
is a leak in the refrigerant circuit:
▪Do NOT use the unit's automatic pump down function, with which you can collect
all refrigerant from the system into the outdoor unit. Possible consequence: Self-
combustion and explosion of the compressor because of air going into the
operating compressor.
▪Use a separate recovery system so that the unit's compressor does NOT have to
operate.
WARNING
ALWAYS recover the refrigerant. Do NOT release them directly into the environment.
Use a vacuum pump to evacuate the installation.
NOTICE
After all the piping has been connected, make sure there is no gas leak. Use nitrogen
to perform a gas leak detection.
NOTICE
▪To avoid compressor breakdown, do NOT charge more than the specified amount
of refrigerant.
▪When the refrigerant system is to be opened, refrigerant MUST be treated
according to the applicable legislation.

1 | General safety precautions
Installer reference guide
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EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
WARNING
Make sure there is no oxygen in the system. Refrigerant may only be charged after
performing the leak test and the vacuum drying.
Possible consequence: Self-combustion and explosion of the compressor because of
oxygen going into the operating compressor.
▪In case recharge is required, see the nameplate of the unit. It states the type of
refrigerant and necessary amount.
▪The unit is factory charged with refrigerant and depending on pipe sizes and pipe
lengths some systems require additional charging of refrigerant.
▪Only use tools exclusively for the refrigerant type used in the system, this to
ensure pressure resistance and prevent foreign materials from entering into the
system.
▪Charge the liquid refrigerant as follows:
If Then
A siphon tube is present
(i.e., the cylinder is marked with "Liquid
filling siphon attached")
Charge with the cylinder upright.
A siphon tube is NOT present Charge with the cylinder upside down.
▪Open refrigerant cylinders slowly.
▪Charge the refrigerant in liquid form. Adding it in gas form may prevent normal
operation.
CAUTION
When the refrigerant charging procedure is done or when pausing, close the valve of
the refrigerant tank immediately. If the valve is NOT closed immediately, remaining
pressure might charge additional refrigerant. Possible consequence: Incorrect
refrigerant amount.
1.2.4 Water
If applicable. See the installation manual or installer reference guide of your
application for more information.
NOTICE
Make sure water quality complies with EU directive 98/83EC.

1 | General safety precautions
Installer reference guide
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EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
1.2.5 Electrical
DANGER: RISK OF ELECTROCUTION
▪Turn OFF all power supply before removing the switch box cover, connecting
electrical wiring or touching electrical parts.
▪Disconnect the power supply for more than 10minutes, and measure the voltage
at the terminals of main circuit capacitors or electrical components before
servicing. The voltage MUST be less than 50VDC before you can touch electrical
components. For the location of the terminals, see the wiring diagram.
▪Do NOT touch electrical components with wet hands.
▪Do NOT leave the unit unattended when the service cover is removed.
WARNING
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.
WARNING
▪ONLY use copper wires.
▪Make sure the field wiring complies with the applicable legislation.
▪All field wiring MUST be performed in accordance with the wiring diagram
supplied with the product.
▪NEVER squeeze bundled cables and make sure they do NOT come in contact with
the piping and sharp edges. Make sure no external pressure is applied to the
terminal connections.
▪Make sure to install earth wiring. Do NOT earth the unit to a utility pipe, surge
absorber, or telephone earth. Incomplete earth may cause electrical shock.
▪Make sure to use a dedicated power circuit. NEVER use a power supply shared by
another appliance.
▪Make sure to install the required fuses or circuit breakers.
▪Make sure to install an earth leakage protector. Failure to do so may cause
electrical shock or fire.
▪When installing the earth leakage protector, make sure it is compatible with the
inverter (resistant to high frequency electric noise) to avoid unnecessary opening
of the earth leakage protector.
CAUTION
▪When connecting the power supply: connect the earth cable first, before making
the current-carrying connections.
▪When disconnecting the power supply: disconnect the current-carrying cables
first, before separating the earth connection.
▪The length of the conductors between the power supply stress relief and the
terminal block itself must be as such that the current-carrying wires are tautened
before the earth wire is in case the power supply is pulled loose from the stress
relief.

1 | General safety precautions
Installer reference guide
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EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
NOTICE
Precautions when laying power wiring:
▪Do NOT connect wiring of different thicknesses to the power terminal block (slack
in the power wiring may cause abnormal heat).
▪When connecting wiring which is the same thickness, do as shown in the figure
above.
▪For wiring, use the designated power wire and connect firmly, then secure to
prevent outside pressure being exerted on the terminal board.
▪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.
Install power cables at least 1 m away from televisions or radios to prevent
interference. Depending on the radio waves, a distance of 1 m may not be
sufficient.
WARNING
▪After finishing the electrical work, confirm that each electrical component and
terminal inside the electrical components box is connected securely.
▪Make sure all covers are closed before starting up the unit.
NOTICE
Only applicable if the power supply is three‑phase, and the compressor has an ON/
OFF starting method.
If there exists the possibility of reversed phase after a momentary black out and the
power goes 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.

2 | About the documentation
Installer reference guide
13
EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
2 About the documentation
In this chapter
2.1 About this document.............................................................................................................................................................. 13
2.2 Installer reference guide at a glance...................................................................................................................................... 14
2.1 About this document
Target audience
Authorised installers
Documentation set
This document is part of a documentation set. The complete set consists of:
▪General safety precautions:
-Safety instructions that you must read before installing
-Format: Paper (in the box of the indoor unit)
▪Operation manual:
-Quick guide for basic usage
-Format: Paper (in the box of the indoor unit)
▪User reference guide:
-Detailed step-by-step instructions and background information for basic and
advanced usage
-Format: Digital files on http://www.daikineurope.com/support-and-manuals/
product-information/
▪Installation manual – Outdoor unit:
-Installation instructions
-Format: Paper (in the box of the outdoor unit)
▪Installation manual – Indoor unit:
-Installation instructions
-Format: Paper (in the box of the indoor unit)
▪Installer reference guide:
-Preparation of the installation, good practices, reference data,…
-Format: Digital files on http://www.daikineurope.com/support-and-manuals/
product-information/
▪Addendum book for optional equipment:
-Additional info about how to install optional equipment
-Format: Paper (in the box of the indoor unit) + Digital files on http://
www.daikineurope.com/support-and-manuals/product-information/
Latest revisions of the supplied documentation may be available on the regional
Daikin website or via your dealer.
The original documentation is written in English. All other languages are
translations.

2 | About the documentation
Installer reference guide
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4P587502-1B – 2020.12
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).
Online tools
In addition to the documentation set, some online tools are available for installers:
▪Daikin Technical Data Hub
-Central hub for technical specifications of the unit, useful tools, digital
resources, and more.
-Publicly accessible via https://daikintechnicaldatahub.eu.
▪Heating Solutions Navigator
-Digital toolbox that offers a variety of tools to facilitate the installation and
configuration of heating systems.
-To access Heating Solutions Navigator, registration to the Stand By Me
platform is required. For more information, see https://
professional.standbyme.daikin.eu.
▪Daikin e-Care
-Mobile app for installers and service technicians that allows you to register,
configure and troubleshoot heating systems.
-The mobile app can be downloaded for iOS and Android devices using the QR
codes below. Registration to the Stand By Me platform is required to access
the app.
App Store Google Play
2.2 Installer reference guide at a glance
Chapter Description
General safety precautions Safety instructions that you must read before
installing
About the documentation What documentation exists for the installer
About the box How to unpack the units and remove their
accessories
About the units and options ▪How to identify the units
▪Possible combinations of units and options
Application guidelines 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

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EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
Chapter Description
Piping installation What to do and know to install the piping of the
system, including information on how to
prepare for an installation
Electrical installation What to do and know to install the electrical
components of the system, including
information on how to prepare for an
installation
Configuration What to do and know to configure the system
after it is installed
Commissioning What to do and know to commission the system
after it is configured
Hand‑over to the user What to give and explain to the user
Maintenance and service How to maintain and service the units
Troubleshooting What to do in case of problems
Disposal How to dispose of the system
Technical data Specifications of the system
Glossary Definition of terms
Field settings table Table to be filled in by the installer, and kept for
future reference
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.

3 | About the box
Installer reference guide
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Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
3 About the box
In this chapter
3.1 Overview: About the box........................................................................................................................................................ 16
3.2 Outdoor unit ........................................................................................................................................................................... 16
3.2.1 To handle the outdoor unit.................................................................................................................................... 16
3.2.2 To unpack the outdoor unit ................................................................................................................................... 18
3.2.3 To remove the accessories from the outdoor unit ............................................................................................... 19
3.3 Indoor unit .............................................................................................................................................................................. 20
3.3.1 To unpack the indoor unit...................................................................................................................................... 20
3.3.2 To remove the accessories from the indoor unit.................................................................................................. 20
3.3.3 To handle the indoor unit ...................................................................................................................................... 20
3.1 Overview: About the box
This chapter describes what you have to do after the boxes with the outdoor and
indoor unit are delivered on-site.
Keep the following in mind:
▪At delivery, the unit MUST be checked for damage. Any damage MUST be
reported immediately to the claims agent of the carrier.
▪Bring the packed unit as close as possible to its final installation position to
prevent damage during transport.
▪Prepare the path along which you want to bring the unit inside in advance.
3.2 Outdoor unit
3.2.1 To handle the outdoor unit
CAUTION
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.

3 | About the box
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EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
Forklift or pallet truck
Enter the pallet from the heavy side.
Manually
After unpacking, carry the unit using the slings attached to the unit.
See also:
▪"To unpack the outdoor unit"[418]
▪"To install the outdoor unit"[464]
±150
kg
4×

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Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
3.2.2 To unpack the outdoor unit
1 2
3
4
a, b Accessories

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Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
3.2.3 To remove the accessories from the outdoor unit
b
c
d
e
f
a
g
ENERG IJAY
IAIE
ENERG IJAY
IAIE
h
i
aShut-off valve (with integrated filter)
bO-ring for drain socket
cDrain socket
dThermistor fixture (for installations in areas with low ambient temperatures)
eInstallation manual – Outdoor unit
fDisposal manual – Recovering refrigerant
gEnergy label
hDischarge grille (upper + lower part)
iInstallation manual – Discharge grille
NOTICE
Unpacking. When you remove the top packaging/accessories, hold the box
containing the discharge grille to prevent it from falling.

3 | About the box
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Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
3.3 Indoor unit
3.3.1 To unpack the indoor unit
1 2
8×
3.3.2 To remove the accessories from the indoor unit
4×
8×
1×
4× 1×
1× 1× 1× 1×
a b
g h ic d e f
aShut-off valves for water circuit
bOverpressure bypass valve
cGeneral safety precautions
dAddendum book for optional equipment
eIndoor unit installation manual
fOperation manual
gSealing rings for shut-off valves (space heating water circuit)
hSealing rings for field-supplied shut-off valves (domestic hot water circuit)
iSealing tape for low voltage wiring intake
3.3.3 To handle the indoor unit
Use the handles at the back and at the bottom to carry the unit.
b
a a
b
aHandles at the back of the unit
bHandles at the bottom of the unit. Carefully tilt the unit to the back so that the
handles become visible.