Daikin ERGA04DAV3, ERGA06DAV3, ERGA08DAV3, EHVZ04S18DA6V, EHVZ08S18DA6V Installer reference guide

Installer reference guide

Daikin Altherma 3 R F

ERGA04DAV3(A)
ERGA06DAV3(A)
ERGA08DAV3(A)

EHVZ04S18DA6V(G)

EHVZ08S18DA6V(G)
EHVZ08S23DA6V(G)

EHVZ08S18DA9W(G)
EHVZ08S23DA9W(G)

EHVZ04S18DJ6V(G)

EHVZ08S18DJ6V(G)
EHVZ08S23DJ6V(G)

EHVZ08S18DJ9W(G)
EHVZ08S23DJ9W(G)

Installer reference guide

Daikin Altherma 3 R F

English

Table of contents

Table of contents

1 General safety precautions 3

1.1 About the documentation .......................................................... 3

1.1.1 Meaning of warnings and symbols.............................. 3

1.2 For the installer.......................................................................... 4

1.2.1 General ....................................................................... 4

1.2.2 Installation site ............................................................ 4

1.2.3 Refrigerant .................................................................. 4

1.2.4 Brine............................................................................ 5

1.2.5 Water .......................................................................... 5

1.2.6 Electrical ..................................................................... 6

2 About the documentation 6

2.1 About this document.................................................................. 6

2.2 Installer reference guide at a glance ......................................... 7

3 About the box 7

3.1 Overview: About the box ........................................................... 7

3.2 Outdoor unit............................................................................... 7

3.2.1 To unpack the outdoor unit ......................................... 7

3.2.2 To handle the outdoor unit.......................................... 7

3.2.3 To remove the accessories from the outdoor unit....... 8

3.3 Indoor unit ................................................................................. 8

3.3.1 To unpack the indoor unit ........................................... 8

3.3.2 To remove the accessories from the indoor unit......... 8

3.3.3 To handle the indoor unit ............................................ 8

4 About the units and options 9

4.1 Overview: About the units and options...................................... 9

4.2 Identification .............................................................................. 9

4.2.1 Identification label: Outdoor unit ................................. 9

4.2.2 Identification label: Indoor unit .................................... 9

4.3 Combining units and options ..................................................... 9

4.3.1 Possible options for the outdoor unit........................... 9

4.3.2 Possible options for the indoor unit............................. 9

4.3.3 Possible combinations of indoor unit and outdoor

unit .............................................................................. 10

5 Application guidelines 10

5.1 Overview: Application guidelines............................................... 10

5.2 Setting up the space heating system ........................................ 10

5.2.1 Multiple rooms – TwoLWT zones............................... 11

5.3 Setting up the domestic hot water tank ..................................... 12

5.3.1 System layout – Integrated DHW tank........................ 12

5.3.2 Selecting the volume and desired temperature for

the DHW tank.............................................................. 12

5.3.3 Setup and configuration – DHW tank.......................... 13

5.3.4 DHW pump for instant hot water................................. 13

5.3.5 DHW pump for disinfection ......................................... 13

5.4 Setting up the energy metering ................................................. 13

5.4.1 Produced heat............................................................. 13

5.4.2 Consumed energy....................................................... 13

5.4.3 Normal kWh rate power supply................................... 14

5.4.4 Preferential kWh rate power supply............................ 14

5.5 Setting up the power consumption control ................................ 15

5.5.1 Permanent power limitation ........................................ 15

5.5.2 Power limitation activated by digital inputs ................. 15

5.5.3 Power limitation process ............................................. 15

5.6 Setting up an external temperature sensor ............................... 16

6 Preparation 16

6.1 Overview: Preparation............................................................... 16

6.2 Preparing the installation site .................................................... 16

6.2.1 Installation site requirements of the outdoor unit ........ 16

6.2.2 Additional installation site requirements of the

outdoor unit in cold climates ....................................... 17

6.2.3 Installation site requirements of the indoor unit .......... 18

6.3 Preparing refrigerant piping....................................................... 21

6.3.1 Refrigerant piping requirements................................... 21

6.3.2 Refrigerant piping insulation ........................................ 21

6.4 Preparing water piping ............................................................... 21

6.4.1 Water circuit requirements ........................................... 21

6.4.2 Formula to calculate the expansion vessel pre-

pressure ....................................................................... 22

6.4.3 To check the water volume and flow rate .................... 22

6.4.4 Changing the pre-pressure of the expansion vessel.... 23

6.4.5 To check the water volume: Examples ........................ 23

6.5 Preparing electrical wiring .......................................................... 24

6.5.1 About preparing electrical wiring.................................. 24

6.5.2 About preferential kWh rate power supply ................... 24

6.5.3 Overview of electrical connections except external

actuators ...................................................................... 24

6.5.4 Overview of electrical connections for external and

internal actuators ......................................................... 24

7 Installation 25

7.1 Overview: Installation ................................................................. 25

7.2 Opening the units ....................................................................... 25

7.2.1 About opening the units ............................................... 25

7.2.2 To open the outdoor unit.............................................. 25

7.2.3 To open the indoor unit ................................................ 25

7.2.4 To open the switch box cover of the indoor unit .......... 26

7.2.5 To lower the switch box on the indoor unit................... 26

7.3 Mounting the outdoor unit........................................................... 27

7.3.1 About mounting the outdoor unit.................................. 27

7.3.2 Precautions when mounting the outdoor unit............... 27

7.3.3 To provide the installation structure ............................. 27

7.3.4 To install the outdoor unit............................................. 28

7.3.5 To provide drainage ..................................................... 29

7.3.6 To prevent the outdoor unit from falling over ............... 29

7.4 Mounting the indoor unit............................................................. 30

7.4.1 About mounting the indoor unit.................................... 30

7.4.2 Precautions when mounting the indoor unit................. 30

7.4.3 To install the indoor unit............................................... 30

7.4.4 To connect the drain hose to the drain ........................ 30

7.5 Connecting the refrigerant piping ............................................... 31

7.5.1 About connecting the refrigerant piping ....................... 31

7.5.2 Precautions when connecting the refrigerant piping.... 31

7.5.3 Guidelines when connecting the refrigerant piping...... 31

7.5.4 Pipe bending guidelines............................................... 32

7.5.5 To flare the pipe end .................................................... 32

7.5.6 To braze the pipe end .................................................. 32

7.5.7 Using the stop valve and service port .......................... 32

7.5.8 To connect the refrigerant piping to the outdoor unit ... 33

7.5.9 To connect the refrigerant piping to the indoor unit ..... 33

7.6 Checking the refrigerant piping .................................................. 34

7.6.1 About checking the refrigerant piping .......................... 34

7.6.2 Precautions when checking the refrigerant piping ....... 34

7.6.3 To check for leaks........................................................ 34

7.6.4 To perform vacuum drying ........................................... 34

7.7 Charging refrigerant ................................................................... 35

7.7.1 About charging refrigerant ........................................... 35

7.7.2 Precautions when charging refrigerant ........................ 35

7.7.3 To determine the additional refrigerant amount........... 35

7.7.4 To determine the complete recharge amount.............. 35

7.7.5 To charge additional refrigerant ................................... 35

7.7.6 To fix the fluorinated greenhouse gases label ............. 35

7.8 Connecting the water piping....................................................... 36

7.8.1 About connecting the water piping............................... 36

7.8.2 Precautions when connecting the water piping............ 36

7.8.3 To connect the water piping......................................... 36

7.8.4 To connect the recirculation piping .............................. 37

7.8.5 To fill the water circuit .................................................. 37

7.8.6 To fill the domestic hot water tank ............................... 37

7.8.7 To insulate the water piping ......................................... 37

7.9 Connecting the electrical wiring.................................................. 37

7.9.1 About connecting the electrical wiring.......................... 37

7.9.2 About electrical compliance ......................................... 38

Installer reference guide

2

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

1 General safety precautions

7.9.3 Precautions when connecting the electrical wiring ..... 38

7.9.4 Guidelines when connecting the electrical wiring ....... 38

7.9.5 Specifications of standard wiring components............ 38

7.9.6 To connect the electrical wiring on the outdoor unit.... 38

7.9.7 To connect the electrical wiring on the indoor unit...... 39

7.9.8 To connect the main power supply ............................. 40

7.9.9 To connect the backup heater power supply .............. 41

7.9.10 To connect the shut-off valve ...................................... 42

7.9.11 To connect the electricity meters ................................ 42

7.9.12 To connect the domestic hot water pump ................... 42

7.9.13 To connect the alarm output ....................................... 42

7.9.14 To connect the space heating ON/OFF output ........... 42

7.9.15 To connect the changeover to external heat source ... 43

7.9.16 To connect the power consumption digital inputs ....... 43

7.9.17 To connect the safety thermostat (normally closed

contact) ....................................................................... 43

7.10 Finishing the outdoor unit installation ........................................ 44

7.10.1 To finish the outdoor unit installation .......................... 44

7.11 Finishing the indoor unit installation .......................................... 44

7.11.1 To close the indoor unit............................................... 44

8 Configuration 44

8.1 Overview: Configuration ............................................................ 44

8.1.1 To access the most used commands ......................... 44

8.2 Configuration wizard.................................................................. 45

8.3 Possible screens ....................................................................... 45

8.3.1 Possible screens: Overview........................................ 45

8.3.2 Home screen............................................................... 46

8.3.3 Main menu screen ...................................................... 46

8.3.4 Menu screen ............................................................... 47

8.3.5 Setpoint screen........................................................... 47

8.3.6 Detailed screen with values ........................................ 47

8.3.7 Detailed screen with weather-dependent curve.......... 48

8.3.8 Schedule screen: Example ......................................... 48

8.4 Settings menu ........................................................................... 50

8.4.1 Malfunction.................................................................. 50

8.4.2 Room .......................................................................... 50

8.4.3 Main zone ................................................................... 51

8.4.4 Additional zone ........................................................... 55

8.4.5 Space heating............................................................. 56

8.4.6 Tank ............................................................................ 58

8.4.7 User settings ............................................................... 61

8.4.8 Information .................................................................. 62

8.4.9 Installer settings .......................................................... 63

8.5 Menu structure: Overview user settings .................................... 70

8.6 Menu structure: Overview installer settings............................... 71

12 Troubleshooting 79

12.1 Overview: Troubleshooting......................................................... 79

12.2 Precautions when troubleshooting ............................................. 79

12.3 Solving problems based on symptoms....................................... 79

12.3.1 Symptom: The unit is NOT heating as expected ......... 79

12.3.2 Symptom: The compressor does NOT start (space

heating or domestic water heating).............................. 79

12.3.3 Symptom: The system is making gurgling noises

after commissioning ..................................................... 80

12.3.4 Symptom: The pump is making noise (cavitation) ....... 80

12.3.5 Symptom: The pressure relief valve opens.................. 80

12.3.6 Symptom: The water pressure relief valve leaks ......... 80

12.3.7 Symptom: The space is NOT sufficiently heated at

low outdoor temperatures ............................................ 80

12.3.8 Symptom: The pressure at the tapping point is

temporarily unusually high ........................................... 81

12.3.9 Symptom: Decoration panels are pushed away due

to a swollen tank .......................................................... 81

12.3.10 Symptom: Tank disinfection function is NOT

completed correctly (AH-error)..................................... 81

12.4 Solving problems based on error codes ..................................... 81

12.4.1 To display the help text in case of a malfunction ......... 81

12.4.2 Error codes: Overview ................................................. 81

13 Disposal 83

13.1 Overview: Disposal..................................................................... 83

13.2 To pump down............................................................................ 83

13.3 To start and stop forced cooling ................................................. 83

14 Technical data 85

14.1 Piping diagram: Outdoor unit...................................................... 85

14.2 Piping diagram: Indoor unit ........................................................ 86

14.3 Wiring diagram: Outdoor unit ..................................................... 87

14.4 Wiring diagram: Indoor unit ........................................................ 88

14.5 Table 1 – Maximum refrigerant charge allowed in a room:

indoor unit................................................................................... 91

14.6 Table 2 – Minimum floor area: indoor unit .................................. 91

14.7 Table 3 – Minimum venting opening area for natural

ventilation: indoor unit ................................................................ 91

14.8 ESP curve: Indoor unit ............................................................... 92

15 Glossary 92

16 Field settings table 93

1 General safety precautions

9 Commissioning 72

9.1 Overview: Commissioning......................................................... 72

9.2 Precautions when commissioning ............................................. 72

9.3 Checklist before commissioning................................................ 72

9.4 Checklist during commissioning ................................................ 72

9.4.1 To check the minimum flow rate ................................. 72

9.4.2 Air purge function........................................................ 73

9.4.3 To perform an operation test run ................................ 74

9.4.4 To perform an actuator test run .................................. 74

9.4.5 Underfloor heating screed dryout................................ 74

10 Hand-over to the user 75

11 Maintenance and service 75

11.1 Overview: Maintenance and service ......................................... 76

11.2 Maintenance safety precautions................................................ 76

11.3 Checklist for yearly maintenance of the outdoor unit ................ 76

11.4 Checklist for yearly maintenance of the indoor unit................... 76

11.4.1 To drain the domestic hot water tank .......................... 77

11.5 About cleaning the water filter in case of trouble....................... 77

11.5.1 To remove the water filter ........................................... 78

11.5.2 To clean the water filter in case of trouble .................. 78

11.5.3 To install the water filter .............................................. 78

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

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

Indicates a situation that could result in burning because of
extreme hot or cold temperatures.

Installer reference guide

3

1 General safety precautions

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.

NOTICE

Indicates a situation that could result in equipment or
property damage.

INFORMATION

Indicates useful tips or additional information.

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.

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.

NOTICE

▪ 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 For the installer

1.2.1 General

If you are NOT sure how to install or operate the unit, contact your
dealer.

NOTICE

Improper installation or attachment of equipment or
accessories could result in electric 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).

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.

DANGER: RISK OF BURNING

▪ 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.

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.

▪ 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

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.

Installer reference guide

4

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

1 General safety precautions

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 may 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.

WARNING

Make sure there is no oxygen in the system. Refrigerant
may only be charged after performing the leak test and the
vacuum drying.

▪ 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.

If Then

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 Brine

If applicable. See the installation manual or installer reference guide
of your application for more information.

WARNING

The selection of the brine MUST be in accordance with the
applicable legislation.

WARNING

Take sufficient precautions in case of brine leakage. If
brine leaks, ventilate the area immediately and contact
your local dealer.

WARNING

The ambient temperature inside the unit can get much
higher than that of the room, e.g. 70°C. In case of a brine
leak, hot parts inside the unit can create a hazardous
situation.

WARNING

The use and installation of the application MUST comply
with the safety and environmental precautions specified in
the applicable legislation.

1.2.5 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.

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

Installer reference guide

5

2 About the documentation

1.2.6 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 1 minute,

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 electric 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, the earth connection
must be made before the current-carrying connections are
established. When disconnecting the power supply, the
current-carrying connections must be separated before the
earth connection is. 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.

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 metre away from televisions or radios
to prevent interference. Depending on the radio waves, a distance of
1metre 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

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)

▪ Indoor unit installation manual:

▪ Installation instructions

▪ Format: Paper (in the box of the indoor unit)

▪ Outdoor unit installation manual:

▪ Installation instructions

▪ Format: Paper (in the box of the outdoor unit)

Installer reference guide

6

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

3 About the box

1 2

▪ 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/product­information/

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.

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

extranet (authentication required).

2.2 Installer reference guide at a glance

Chapter Description

General safety
precautions

About the documentation What documentation exists for the

About the box How to unpack the units and remove

About the units and
options

Application guidelines Various installation setups of the system

Preparation What to do and know before going

Installation What to do and know to install the

Configuration What to do and know to configure the

Commissioning What to do and know to commission the

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

Safety instructions that you must read
before installing

installer

their accessories

▪ How to identify the units

▪ Possible combinations of units and

options

on‑site

system

system after it is installed

system after it is configured

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

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 unpack the outdoor unit

3.2.2 To handle the outdoor unit

CAUTION

To avoid injury, do NOT touch the air inlet or aluminium
fins of the unit.

1 Handle the unit using the sling to the left and the handle to the

right. Pull up both sides of the sling at the same time to prevent
disconnection of the sling from the unit.

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

Installer reference guide

7

3 About the box

2

1

1

ENERG

IJAY

IAIE

ENERG

IJAY

IAIE

1×1× 1× 1× 2× 1×

da b c e f

1 2

8×

4×

6×

1×

4× 1×

1× 1× 1× 1×

a b

g h ic d e f

b

a a

b

3.3 Indoor unit

3.3.1 To unpack the indoor unit

3.3.2 To remove the accessories from the indoor unit

2 While handling the unit:

▪ Keep both sides of the sling level.
▪ Keep your back straight.

3 After mounting the unit, remove the sling from the unit by pulling

1 side of the sling.

3.2.3 To remove the accessories from the outdoor unit

1 Lift the outdoor unit. See "3.2.2 To handle the outdoor unit"on

page7.

2 Remove the accessories at the bottom of the package.

a Shut-off valves for water circuit
b Overpressure bypass valve
c General safety precautions
d Addendum book for optional equipment
e Indoor unit installation manual

f Operation manual

g Sealing rings for shut-off valves (space heating water

circuit)

h Sealing rings for field-supplied shut-off valves (domestic

hot water circuit)

i Sealing 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.

a Outdoor unit installation manual
b Fluorinated greenhouse gases label
c Multilingual fluorinated greenhouse gases label
d Energy label
e Unit mounting plate

f Bolts, nuts, washers, spring washers and wire clamp

Installer reference guide

8

a 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.

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

4 About the units and options

4 About the units and options

4.1 Overview: About the units and options

This chapter contains information about:

▪ Identifying the outdoor unit

▪ Identifying the indoor unit

▪ Combining the outdoor unit with options

▪ Combining the indoor unit with options

4.2 Identification

NOTICE

When installing or servicing several units at the same time,
make sure NOT to switch the service panels between
different models.

4.2.1 Identification label: Outdoor unit

Location

Model identification

Example: ERGA06DAV3 A

Code Explanation

ER European split outdoor pair heat pump

G Medium water temperature – ambient zone: −10~

−20°C

A Refrigerant R32

06 Capacity class

DA Model series

V3 Power supply

A A=Austrian model

[—]=Non-Austrian model

4.2.2 Identification label: Indoor unit

Location

Code Description

18 Integrated tank volume

DA Model series

6V Backup heater model

G G=Grey model

[—]=White model

4.3 Combining units and options

4.3.1 Possible options for the outdoor unit

Drain pan kit (EKDP008D)

The drain pan kit is required to gather the drain from the outdoor
unit. The drain pan kit consists of:

▪ Drain pan

▪ Installation brackets

For installation instructions, see the installation manual of the drain
pan.

Drain pan heater (EKDPH008CA)

The drain pan heater is required to avoid freezing-up of the drain
pan.

It is recommended to install this option in colder regions with
possible low ambient temperatures or heavy snowfall.

For installation instructions, see the installation manual of the drain
pan heater.

U-beams (EKFT008D)

The U-beams are installation brackets on which the outdoor unit can
be installed.

It is recommended to install this option in colder regions with
possible low ambient temperatures or heavy snowfall.

For installation instructions, see the installation manual of the
outdoor unit.

Low sound cover (EKLN08A1)

In sound sensitive areas (e.g. near a bedroom), you can install the
low sound cover to decrease the operation noise of the outdoor unit.

You can install the low sound cover:

▪ On mounting feet to the ground. This must withstand 200kg.

▪ On brackets to the wall. This must withstand 200kg.

If you install the low sound cover, you also need to install one of the
following options:

▪ Recommended: Drain pan kit (with or without drain pan heater)

▪ U-beams

For installation instructions, see the installation manual of the low
sound cover.

Model identification

Example: EHVZ04S18DA6VG

Code Description

E European model

HV Floor-standing indoor unit with integrated tank

Z Dual-zone model

04 Capacity class

S Integrated tank material: Stainless steel

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

4.3.2 Possible options for the indoor unit

User interface used as room thermostat (BRC1HHDA)

▪ The user interface used as room thermostat can only be used in

combination with the user interface connected to the indoor unit.

▪ The user interface used as room thermostat needs to be installed

in the room that you want to control.

For installation instructions, see the installation and operation
manual of the user interface used as room thermostat.

Room thermostat (EKRTWA, EKRTR1)

You can connect an optional room thermostat to the indoor unit. This
thermostat can either be wired (EKRTWA) or wireless (EKRTR1).

Installer reference guide

9

5 Application guidelines

For installation instructions, see the installation manual of the room
thermostat and addendum book for optional equipment.

Remote sensor for wireless thermostat (EKRTETS)

You can use a wireless indoor temperature sensor (EKRTETS) only
in combination with the wireless thermostat (EKRTR1).

For installation instructions, see the installation manual of the room
thermostat and addendum book for optional equipment.

Digital I/O PCB (EKRP1HB)

The digital I/O PCB is required to provide following signals:

▪ Alarm output

▪ Space heating On/OFF output

▪ Changeover to external heat source

For installation instructions, see the installation manual of the digital
I/O PCB and addendum book for optional equipment.

Demand PCB (EKRP1AHTA)

To enable the power saving consumption control by digital inputs
you must install the demand PCB.

For installation instructions, see the installation manual of the
demand PCB and addendum book for optional equipment.

Remote indoor sensor (KRCS01-1)

By default the internal user interface sensor will be used as room
temperature sensor.

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.

INFORMATION

▪ The remote indoor sensor can only be used in case the

user interface is configured with room thermostat
functionality.

▪ You can only connect either the remote indoor sensor

or the remote outdoor sensor.

Remote outdoor sensor (EKRSCA1)

By default the sensor inside the outdoor unit will be used to measure
the outdoor temperature.

As an option the remote outdoor sensor can be installed to measure
the outdoor temperature on another location (e.g. to avoid direct
sunlight) to have an improved system behaviour.

For installation instructions, see the installation manual of the remote
outdoor sensor.

INFORMATION

You can only connect either the remote indoor sensor or
the remote outdoor sensor.

PC cable (EKPCCAB)

The PC cable makes a connection between the switch box of the
indoor unit and a PC. It gives the possibility to update the software of
the indoor unit.

For installation instructions, see the installation manual of the PC
cable.

Pipe bend kit (EKHVTC)

When the indoor unit is installed in a place with limited space, a pipe
bend kit can be installed to facilitate the connection to the refrigerant
liquid and gas connections of the indoor unit.

For installation instructions, see the instruction sheet of the pipe
bend kit.

Heat pump convector (FWXV)

For installation instructions, see the installation manual of the heat
pump convectors, and the addendum book for optional equipment.

LAN adapter for smartphone control + Smart Grid applications
(BRP069A61)

You can install this LAN adapter to:

▪ Control the system via a smartphone app.

▪ Use the system in various Smart Grid applications.

For installation instructions, see the installation manual of the LAN
adapter.

LAN adapter for smartphone control (BRP069A62)

You can install this LAN adapter to control the system via a
smartphone app.

For installation instructions, see the installation manual of the LAN
adapter.

4.3.3 Possible combinations of indoor unit and outdoor unit

Indoor unit Outdoor unit

ERGA04 ERGA06 ERGA08

EHVZ04 O — —

EHVZ08 — O O

5 Application guidelines

5.1 Overview: Application guidelines

The purpose of the application guidelines is to give a glance of the
possibilities of the heatpump system.

NOTICE

▪ The illustrations in the application guidelines are meant

for reference only, and are NOT to be used as detailed
hydraulic diagrams. The detailed hydraulic
dimensioning and balancing are NOT shown, and are
the responsibility of the installer.

▪ For more information about the configuration settings to

optimize heatpump operation, see "8Configuration"on

page44.

This chapter contains application guidelines for:

▪ Setting up the space heating system

▪ Setting up the domestic hot water tank

▪ Setting up the energy metering

▪ Setting up the power consumption control

▪ Setting up an external temperature sensor

5.2 Setting up the space heating system

The Daikin heat pump system supplies leaving water to heat
emitters in one or more rooms.

Because the system offers a wide flexibility to control the
temperature in each room, you need to answer the following
questions first:

▪ How many rooms are heated by the Daikin heatpump system?

▪ Which heat emitter types are used in each room and what is their

design leaving water temperature?

Installer reference guide

10

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

5 Application guidelines

a

j

k

j

HPC1

FHL1 FHL2 FHL3

HPC2 HPC3

B

A

C

E

D

M

a b c

g hf

d e

i

i

hh

h

Once the space heating requirements are clear, Daikin recommends
to follow the setup guidelines below.

NOTICE

If an external room thermostat is used, the external room
thermostat will control the room frost protection. However,
the room frost protection is only possible if [C.2] Space
heating/cooling is turned ON.

INFORMATION

In case an external room thermostat is used and room frost
protection needs to be guaranteed in all conditions, then
you have to set Emergency [9.5] to Automatic.

NOTICE

If you install this unit as a single-zone application, then:

Setup. Install a bypass between the space heating water
inlet and outlet of the additional zone (=direct zone). Do
NOT interrupt the water flow by closing the shut-off valves.

a Bypass

Configuration. Set field setting [7-02]=0 (Number of

zones = Single zone).

5.2.1 Multiple rooms – TwoLWT zones

This unit is designed to deliver water at 2 different temperatures. A
typical installation consists of underfloor heating at a lower
temperature and radiators at a higher water temperature.

In this document:

▪ Main zone = Zone with the lowest design temperature

▪ Additional zone = Zone with the highest design temperature

Typical example:

Room (zone) Heat emitters: Design

temperature

Living room (main zone) Underfloor heating: 35°C

Bed rooms (additional zone) Heat pump convectors: 45°C

Setup

A Additional leaving water temperature zone
B Room 1
C Room 2
D Main leaving water temperature zone
E Room 3

a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Motorised 3-way valve (mixing the main zone)

f Additional pump
g Main pump
h Shut-off valve

i Collector (field supply)

j Remote controller of the heat pump convectors (field

supply)

k User interface used as room thermostat

HPC1...3 Heat pump convectors (field supply)

FHL1...3 Floor heating loops (field supply)

▪ For the main zone: the room temperature is controlled by the user

interface, which is used as room thermostat (optional equipment
EKRUDAS).

▪ For the additional zone:

▪ The external thermostat is directly connected to the indoor unit.

▪ The desired room temperature is set via the external thermostat

and the thermostatic valves of the radiators in each room.

▪ The heating demand signal from the external thermostat is

connected to the digital input on the indoor unit (X2M/35a and
X2M/30). The indoor unit will only supply the desired additional
leaving water temperature when there is an actual demand.

Configuration

Setting Value

Unit temperature control:

▪ #: [2.9]

▪ Code: [C-07]

2 (Room thermostat): Unit
operation is decided based on
the ambient temperature of the
user interface.

Note:

▪ Main room = user interface

used as room thermostat
functionality

▪ Other rooms = external room

thermostat functionality

Number of water temperature

1 (Dual zone): Main + additional

zones:

▪ #: [4.4]

▪ Code: [7-02]

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

Installer reference guide

11

5 Application guidelines

M

M

a b c d ge h ii

i

j

j

fki

HPC1

UI

FHL1 FHL2 FHL3

HPC2 HPC3

Setting Value

In case of heatpump convectors:

External room thermostat for the
additional zone:

▪ #: [3.A]

1 (1 contact): When the used
external room thermostat or
heatpump convector can only
send a thermo ON/OFF
condition.

▪ Code: [C-06]

Shut-off valve output Set to follow the thermo demand

of the main zone.

Benefits

▪ Comfort. The smart room thermostat functionality can decrease

or increase the desired leaving water temperature based on the
actual room temperature (modulation).

▪ Efficiency.

▪ Depending on the demand, the indoor unit supplies different

leaving water temperature matching the design temperature of
the different heat emitters.

▪ Underfloor heating has the best performance with the heat

pump system.

5.3 Setting up the domestic hot water tank

5.3.1 System layout – Integrated DHW tank

a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Motorised 3‑wave valve (switch between space heating

and domestic hot water)

f Motorised 3‑way valve (mixing the main zone)
g Main pump
h Additional pump

i Shut-off valve
j Collector (field supply)

k Domestic hot water tank

FHL1...3 Floor heating loops (field supply)

UI User interface (field supply)

HPC1...3 Heat pump convectors (field supply)

5.3.2 Selecting the volume and desired temperature for the DHW tank

People experience water as hot when its temperature is 40°C.
Therefore, the DHW consumption is always expressed as equivalent
hot water volume at 40°C. However, you can set the DHW tank
temperature at a higher temperature (example: 53°C), which is then
mixed with cold water (example: 15°C).

Selecting the volume and desired temperature for the DHW tank
consists of:

1 Determining the DHW consumption (equivalent hot water

volume at 40°C).

2 Determining the volume and desired temperature for the DHW

tank.

Determining the DHW consumption

Answer the following questions and calculate the DHW consumption
(equivalent hot water volume at 40°C) using typical water volumes:

Question Typical water volume

How many showers are needed
per day?

How many baths are needed per

1shower = 10min×10l/min =
100l

1bath = 150l

day?

How much water is needed at the

1sink = 2min×5l/min = 10l

kitchen sink per day?

Are there any other domestic hot

—

water needs?

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

Determining the volume and desired temperature for the DHW
tank

Formula Example

V1=V2+V2×(T2−40)/(40−T1) If:

▪ V2=180l

▪ T2=54°C

▪ T1=15°C

Then V1=280l

V2=V1×(40−T1)/(T2−T1) If:

▪ V1=480l

▪ T2=54°C

▪ T1=15°C

Then V2=307l

V1DHW consumption (equivalent hot water volume at 40°C)
V2Required DHW tank volume if only heated once
T2DHW tank temperature
T1Cold water temperature

Possible DHW tank volumes

Type Possible volumes

Integrated DHW tank ▪ 180l

▪ 230l

Energy saving tips

▪ If the DHW consumption differs from day to day, you can program

a weekly schedule with different desired DHW tank temperatures
for each day.

▪ The lower the desired DHW tank temperature, the more cost

effective. By selecting a larger DHW tank, you can lower the
desired DHW tank temperature.

▪ The heatpump itself can produce domestic hot water of maximum

55°C (50°C if outdoor temperature is low). The electrical
resistance integrated in the heat pump can increase this
temperature. However, this consumes more energy. We
recommend to set the desired DHW tank temperature below 55°C
to avoid using the backup heater.

Installer reference guide

12

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

5 Application guidelines

c

f

a

g

h

i

b

c

a

b

d f

e g

h

i

▪ The higher the outdoor temperature, the better the performance of

the heatpump.

▪ If energy prices are the same during the day and the night,

Daikin recommends to heat up the DHW tank during the day.

▪ If energy prices are lower during the night, Daikin recommends

to heat up the DHW tank during the night.

▪ When the heatpump produces domestic hot water, it cannot heat

up a space. In case you need domestic hot water and space
heating at the same, we recommend to produce the domestic hot
water during the night when there is lower space heating demand.

5.3.3 Setup and configuration – DHW tank

▪ For large DHW consumptions, you can heat up the DHW tank

several times during the day.

▪ To heat up the DHW tank to the desired DHW tank temperature,

you can use the following energy sources:

▪ Thermodynamic cycle of the heatpump

▪ Electrical backup heater

▪ For more information about optimizing the energy consumption for

producing domestic hot water, see "8Configuration"on page44.

5.3.4 DHW pump for instant hot water

Setup

a Indoor unit

b DHW tank

c DHW pump (field supply)

f Shower (field supply)
g Cold water
h Domestic hot water OUT

i Recirculation connection

▪ By connecting a DHW pump, instant hot water can be available at

the tap.

▪ The DHW pump and the installation are field supply and the

responsibility of the installer.

▪ For more information about connecting the recirculation

connection: see "7Installation"on page25.

Configuration

▪ For more information, see "8Configuration"on page44.

▪ You can program a schedule to control the DHW pump via the

user interface. For more information, see the user reference
guide.

▪ The DHW pump is field-supplied and its installation is the

responsibility of the installer.

▪ The temperature of the DHW tank can be set to maximum 60°C. If

applicable legislation requires higher temperature for disinfection,
you can connect a DHW pump and heater element as shown
above.

▪ If applicable legislation requires disinfection of the water piping

until the tapping point, you can connect a DHW pump and heater
element (if needed) as shown above.

▪ To ensure a complete disinfection, you have to open the tapping

point.

WARNING

When opening the tapping point, the water temperature
can be up to 55°C.

Configuration

The indoor unit can control DHW pump operation. For more
information, see "8Configuration"on page44.

5.4 Setting up the energy metering

▪ 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 domestic hot water production

▪ You can read out the energy data:

▪ Per month

▪ Per year

INFORMATION

The calculated produced heat and consumed energy are
an estimation, the accuracy cannot be guaranteed.

5.4.1 Produced heat

INFORMATION

The sensors used to calculate the produced heat are
calibrated automatically.

▪ The produced heat is calculated internally based on:

▪ The leaving and entering water temperature

▪ The flow rate

▪ Setup and configuration: No additional equipment needed.

5.3.5 DHW pump for disinfection

Setup

5.4.2 Consumed energy

You can use the following methods to determine the consumed
energy:

▪ Calculating

▪ Measuring

INFORMATION

a Indoor unit

b DHW tank

c DHW pump (field supply)

d Heater element (field supply)

e Non‑return valve (field supply)

f Shower (field supply)
g Cold water
h Domestic hot water OUT

i Recirculation connection

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

You cannot combine calculating the consumed energy
(example: for backup heater) and measuring the
consumed energy (example: for outdoor unit). If you do so,
the energy data will be invalid.

Installer reference guide

13

5 Application guidelines

b

5

8

0

1

5

0

0

0

c c

fed

A B

a

b

5

8

0

1

5

0

0

0

gfe

A B

c d

a



Calculating the consumed energy

▪ The consumed energy is calculated internally based on:

▪ The actual power input of the outdoor unit

▪ The set capacity of the backup heater

▪ The voltage

▪ 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).

Measuring the consumed energy

▪ Applicable for all models.

▪ Preferred method because of higher accuracy.

▪ Requires external power meters.

▪ Setup and configuration: When using electrical power meters, set

the number of pulses/kWh for each power meter via the user
interface.

INFORMATION

When measuring the electrical power consumption, make
sure ALL power input of the system is covered by the
electrical power meters.

5.4.3 Normal kWh rate power supply

General rule

One power meter that covers the entire system is sufficient.

Setup

Connect the power meter to X5M/5 and X5M/6.

Power meter type

In case of… Use a… power meter

▪ Single-phase outdoor unit

▪ Backup heater supplied from a

single-phase grid (i.e. the
backup heater model is *6V
connected to a single-phase
grid).

▪ Three-phase outdoor unit

▪ Backup heater supplied from a

three-phase grid (i.e. the
backup heater model is *9W or
*6V connected to a three­phase grid).

Single-phase

(*6V (6V): 1N~230V)

Three-phase

(*6V (6T1): 3~230V)

(*9W: 3N~400V)

Example

Single-phase power meter Three-phase power meter

A Outdoor unit

B Indoor unit

a Electrical cabinet (L1/N)

b Power meter (L1/N)

c Fuse (L1/N)

d Outdoor unit (L1/N)

e Indoor unit (L1/N)

f Backup heater (L1/N)

A Outdoor unit

B Indoor unit

a Electrical cabinet (L1/L2/L3/N)

b Power meter (L1/L2/L3/N)

c Fuse (L1/L2/L3/N)

d Fuse (L1/N)

e Outdoor unit (L1/L2/L3/N)

f Indoor unit (L1/L2/L3/N)

g Backup heater (L1/L2/L3/N)

Exception

▪ You can use a second power meter if:

▪ The power range of one meter is insufficient.

▪ The electrical meter cannot easily be installed in the electrical

cabinet.

▪ 230 V and 400 V three-phase grids are combined (very

uncommon), because of technical limitations of power meters.

▪ Connection and setup:

▪ Connect the second power meter to X5M/3 and X5M/4.

▪ In the software the power consumption data of both meters is

added so you do NOT have to set which meter covers which
power consumption. You only need to set the number of pulses
of each power meter.

▪ See "5.4.4 Preferential kWh rate power supply"on page 14 for

an example with two power meters.

Installer reference guide

14

5.4.4 Preferential kWh rate power supply

General rule

▪ Power meter1: Measures the outdoor unit.

▪ 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.

Power meter types

▪ Power meter1: Single- or three-phase power meter according to

the power supply of the outdoor unit.

▪ Power meter2: Use a single-phase power meter.

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

5 Application guidelines

P

i

t

DI

a

b

a

b

A B

C

1

2

3

4

5

A8P

P

i

t

DI4

DI3

DI1

a

b

5.5 Setting up the power consumption control

▪ The power consumption control:

▪ Allows you to limit the power consumption of the entire system

(sum of outdoor unit, indoor unit and backup heater).

▪ Configuration: Set the power limitation level and how it has to

be achieved via the user interface.

▪ The power limitation level can be expressed as:

▪ Maximum running current (inA)

▪ Maximum power input (inkW)

▪ The power limitation level can be activated:

▪ Permanently

▪ By digital inputs

5.5.1 Permanent power limitation

Permanent power limitation is useful to assure a maximum power or
current input of the system. In some countries, legislation limits the
maximum power consumption for space heating and DHW
production.

PiPower input

t Time

DI Digital input (power limitation level)

a Power limitation active

b Actual power input

Setup and configuration

▪ No additional equipment needed.

▪ Set the power consumption control settings in [9.9] via the user

interface (for the description of all settings, see

"8Configuration"on page44):

▪ Select continuous limitation mode

▪ Select the type of limitation (power in kW or current in A)

▪ Set the desired power limitation level

NOTICE

Set a minimum power consumption of ±3.6 kW to
guarantee:

▪ Defrost operation. Otherwise, if defrosting is interrupted

several times, the heat exchanger will freeze up.

▪ Space heating and DHW production by allowing the

backup heater step1.

5.5.2 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:

▪ Current (in A)

▪ Power input (in kW)

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

The energy management system (field supply) decides the activation
of a certain power limitation level. Example: To limit the maximum
power of the entire house (lighting, domestic appliances, space
heating…).

A Outdoor unit
B Indoor unit
C Energy management system

a Power limitation activation (4 digital inputs)
b Backup heater

PiPower input

t Time

DI Digital inputs (power limitation levels)

a Power limitation active
b Actual power input

Setup

▪ Demand PCB (option EKRP1AHTA) needed.

▪ Maximum four digital inputs are used to activate the

corresponding power limitation level:

▪ DI1 = weakest limitation (highest energy consumption)

▪ DI4 = strongest limitation (lowest energy consumption)

▪ For the specifications of the digital inputs, and for where to

connect them, refer to the wiring diagram.

Configuration

▪ Set the power consumption control settings in [9.9] via the user

interface (for the description of all settings, see

"8Configuration"on page44):

▪ Select limitation by digital inputs.

▪ Select the type of limitation (power in kW or current in A).

▪ Set the desired power limitation level corresponding to each

digital input.

INFORMATION

In case more than 1 digital input is closed (at the same
time), the digital input priority is fixed: DI4 priority>…>DI1.

5.5.3 Power limitation process

The outdoor unit has better efficiency than the electrical heater.
Therefore, the electrical heater is limited and turned OFF first. The
system limits power consumption in the following order:

1 Turns OFF the backup heater.

2 Limits the outdoor unit.

3 Turns OFF the outdoor unit.

Example

If the configuration is as follows: Power limitation level does NOT
allow operation of backup heater (step1).

Then power consumption is limited as follows:

Installer reference guide

15

P

h

C

e

a

b

c

A B

≤1200

>250

>250

>250

>350

>350

(mm)(mm)

a

b

b

a

6 Preparation

PhProduced heat
CeConsumed energy

A Outdoor unit
B Backup heater

a Limited outdoor unit operation
b Full outdoor unit operation
c Backup heater step1 turned ON

5.6 Setting up an external temperature sensor

You can connect one external temperature sensor. It measures the
indoor or outdoor ambient temperature. We recommend to use an
external temperature sensor in the following cases:

Indoor ambient temperature

▪ In room thermostat control, the user interface used as room

thermostat (EKRUDAS) measures the indoor ambient
temperature. Therefore, the user interface used as room
thermostat must be installed on a location:

▪ Where the average temperature in the room can be detected

▪ That is NOT exposed to direct sunlight

▪ That is NOT near a heat source

▪ That is NOT affected by outside air or air draught because of,

for example, door opening/closing

▪ If this is NOT possible, we recommend to connect a remote indoor

sensor (option KRCS01-1).

▪ Setup: For installation instructions, see the installation manual of

the remote indoor sensor.

▪ Configuration: Select room sensor [9.B].

Outdoor ambient temperature

▪ In the outdoor unit, the outdoor ambient temperature is measured.

Therefore, the outdoor unit must be installed on a location:

▪ At the north side of the house or at the side of the house where

the most heat emitters are located

▪ That is NOT exposed to direct sunlight

▪ If this is NOT possible, Daikin recommends to connect a remote

outdoor sensor (option EKRSCA1).

▪ Setup: For installation instructions, see the installation manual of

the remote outdoor sensor.

▪ Configuration: Select outdoor sensor [9.B].

▪ When the power saving functionality of the outdoor unit is active

(see "8 Configuration" on page 44), the outdoor unit is turned
down to reduce standby energy losses. As a result, the outdoor
ambient temperature is NOT read out.

▪ If the desired leaving water temperature is weather dependent, the

full time outdoor temperature measurement is important. This is
another reason to install the optional outdoor ambient temperature
sensor.

INFORMATION

The external outdoor ambient sensor data (either averaged
or instantaneous) is used in the weather-dependent control
curves. To protect the outdoor unit, the internal sensor of
the outdoor unit is always used.

Installer reference guide

16

6 Preparation

6.1 Overview: Preparation

This chapter describes what you have to do and know before going
on-site.

It contains information about:

▪ Preparing the installation site

▪ Preparing the refrigerant piping

▪ Preparing the water piping

▪ Preparing the electrical wiring

6.2 Preparing the installation site

Do NOT install the unit in places often used as work place. In case
of construction works (e.g. grinding works) where a lot of dust is
created, the unit MUST be covered.

Choose an installation location with sufficient space for carrying the
unit in and out of the site.

NOTICE

This unit is designed for operation on 2 temperature zones:

▪ underfloor heating in the main zone, this is the zone

with the lowest water temperature,

▪ radiators in the additional zone, this is the zone with

the highest water temperature.

WARNING

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).

WARNING

DO NOT reuse refrigerant piping that has been used with
any other refrigerant. Replace the refrigerant pipes or
clean thoroughly.

6.2.1 Installation site requirements of the outdoor unit

INFORMATION

Also read the following requirements:

▪ General installation site requirements. See the

"General safety precautions" chapter.

▪ Refrigerant piping requirements (length, height

difference). See further in this "Preparation" chapter.

Mind the following spacing guidelines:

a Air outlet
b Air inlet

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

6 Preparation

>100

>350

(mm)

>100

a

a

b

b

c

a

b

c

a

a

b

c

d

c

d

INFORMATION

In sound sensitive areas (e.g. near a bedroom), you can
install the low sound cover (EKLN08A1) to decrease the
operation noise of the outdoor unit. If you install it, mind the
following spacing guidelines:

a Low sound cover

NOTICE

▪ Do NOT stack the units on each other.

▪ Do NOT hang the unit on a ceiling.

Strong winds (≥18 km/h) blowing against the outdoor unit’s air outlet
causes short circuit (suction of discharge air). This may result in:

▪ deterioration of the operational capacity;

▪ frequent frost acceleration in heating operation;

▪ disruption of operation due to decrease of low pressure or

increase of high pressure;

▪ a broken fan (if a strong wind blows continuously on the fan, it

may start rotating very fast, until it breaks).

It is recommended to install a baffle plate when the air outlet is
exposed to wind.

It is recommended to install the outdoor unit with the air inlet facing
the wall and NOT directly exposed to the wind.

Seaside installation. Make sure the outdoor unit is NOT directly
exposed to sea winds. This is to prevent corrosion caused by high
levels of salt in the air, which might shorten the life of the unit.

Install the outdoor unit away from direct sea winds.

Example: Behind the building.

If the outdoor unit is exposed to direct sea winds, install a
windbreaker.

▪ Height of windbreaker≥1.5×height of outdoor unit

▪ Mind the service space requirements when installing the

windbreaker.

a Sea wind
b Building
c Outdoor unit
d Windbreaker

The outdoor unit is designed for outdoor installation only, and for the
following ambient temperatures:

Cooling mode 10~43°C

Heating mode –25~25°C

6.2.2 Additional installation site requirements of the outdoor unit in cold climates

In areas with low ambient temperatures and high humidity, or in
areas with heavy snowfall, remove the suction grille to ensure proper
operation.

a Baffle plate

b Prevailing wind direction

c Air outlet

Do NOT install the unit in the following places:

▪ Sound sensitive areas (e.g. near a bedroom), so that the

operation noise will cause no trouble.
Note: If the sound is measured under actual installation
conditions, the measured value might be higher than the sound
pressure level mentioned in Sound spectrum in the data book due
to environmental noise and sound reflections.

▪ In places where a mineral oil mist, spray or vapour may be

present in the atmosphere. Plastic parts may deteriorate and fall
off or cause water leakage.

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

▪ Where acidic or alkaline vapour is present

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

Non-exhaustive list of areas: Austria, Czech Republic, Denmark,
Estonia, Finland, Germany, Hungary, Latvia, Lithuania, Norway,
Poland, Romania, Serbia, Slovakia, Sweden, …

1 Remove the screws holding the suction grille.

2 Remove the suction grille, and dispose of it.

3 Reattach the screws to the unit.

Installer reference guide

17

6 Preparation

2

4×

1

3

a

c

c

d

b
e

a

≥300

≥

500

(mm)

≥600

a Suction grille

Protect the outdoor unit against direct snowfall and take care that the
outdoor unit is NEVER snowed up.

a Snow cover or shed
b Pedestal
c Prevailing wind direction
d Air outlet
e EKFT008D option kit

In any case, provide at least 300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. See "7.3 Mounting the

outdoor unit"on page27 for more details.

In heavy snowfall areas it is very important to select an installation
site where the snow will NOT affect the unit. If lateral snowfall is
possible, make sure that the heat exchanger coil is NOT affected by
the snow. If necessary, install a snow cover or shed and a pedestal.

6.2.3 Installation site requirements of the indoor unit

INFORMATION

Also read the precautions and requirements in the
"General safety precautions" chapter.

▪ The indoor unit is designed for indoor installation only and for the

following ambient temperatures:

▪ Space heating operation: 5~30°C

▪ Domestic hot water production: 5~35°C

▪ Mind the following measurements guidelines:

Maximum refrigerant piping length between indoor
unit and outdoor unit

Minimum refrigerant piping length between indoor
unit and outdoor unit

Maximum height difference between indoor unit and

20m

outdoor unit

▪ Mind the following spacing installation guidelines:

INFORMATION

If you have limited installation space, do the following
before installing the unit in its final position: "7.4.4 To

connect the drain hose to the drain" on page 30. It

requires to remove one or both side panels.

▪ The foundation must be strong enough to bear the weight of the

unit. Take the weight of the unit with a domestic hot water tank full
of water into account.
Make sure, in the event of a water leak, water cannot cause any
damage to the installation space and surroundings.

Do NOT install the unit in places such as:

▪ In places where a mineral oil mist, spray or vapour may be

present in the atmosphere. Plastic parts may deteriorate and fall
off or cause water leakage.

▪ Sound sensitive areas (e.g. near a bedroom), so that the

operation noise will cause no trouble.

▪ In places with high humidity (max. RH=85%), for example a

bathroom.

▪ In places where frost is possible. Ambient temperature around the

indoor unit must be >5°C.

NOTICE

When the temperature in multiple rooms is controlled by 1
thermostat, do NOT place a thermostatic valve on the
emitter in the room where the thermostat is installed.

Special requirements for R32

WARNING

▪ Do NOT pierce or burn.

▪ Do NOT use means to accelerate the defrosting

process or to clean the equipment, other than those
recommended by the manufacturer.

▪ Be aware that R32 refrigerant does NOT contain an

odour.

WARNING

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)
and have a room size as specified below.

NOTICE

▪ Do NOT re-use joints which have been used already.

▪ Joints made in installation between parts of refrigerant

30m

3m

system shall be accessible for maintenance purposes.

Installer reference guide

18

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

WARNING

Make sure installation, servicing, maintenance and repair
comply with instructions from Daikin and with applicable
legislation (for example national gas regulation) and are
executed only by authorised persons.

NOTICE

▪ Pipework shall be protected from physical damage.

▪ Installation of pipework shall be kept to a minimum.

6 Preparation

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

Installer reference guide

19

6 Preparation

Input from installer:

▪ Total refrigerant charge (m

c

) (kg)

▪ Area of room A (A

room A

) (m2)

Start

Use table 1 in chapter "Technical data" to
calculate the maximum refrigerant charge
(m

max

) (kg) allowed for room A.

Contact your dealer.

Use table 3 in chapter "Technical data" and
dm to calculate the minimum opening area for
natural ventilation between room A and

room B (VA

min

) (cm2).

Unit can be installed at room A if:
▪ 2 ventilation openings (permanently open) are provided between room A and B, 1 at the top and 1 at the bottom.
▪ Bottom opening: The bottom opening must meet the minimum area requirements (VA

min

). It must be as close as possible to the floor. If the ventilation opening
starts from the floor, the height must be ≥20 mm. The bottom of the opening must be situated ≤100 mm from the floor. At least 50% of the required opening
area must be situated <200 mm from the floor. The entire area of the opening must be situated <300 mm from the floor.

▪ Top opening: The area of the top opening must be larger than or equal to the bottom opening. The bottom of the top opening must be situated at least 1.5 m

above the top of the bottom opening.

▪ Ventilation openings to the outside are NOT considered suitable ventilation openings (the user can block them when it is cold).

The unit can be installed in room A, and
without further room size or ventilation
requirements.

Determine the refrigerant amount that exceeds

m

max

(dm) (kg). (dm=mc–m

max

)

m

max≥mc

?

Yes

No

No

Use table 2 in chapter "Technical data" to
calculate the total minimum floor area
(A

min total

) (m2) required for the total refrigerant

charge (m

c

).

A

min total≤Aroom A+Aroom B

?

Yes

Input from installer:

▪ Area of adjacent room B (A

room B

) (m2)

a Indoor unit
A Room where the indoor unit is installed.
B Room adjacent to room A.

A

a

B

≥1.5 m

If the total refrigerant charge in the system is ≥1.84kg (i.e. if the piping length is ≥27m), you need to comply with the minimum floor area
requirements as described in the following flow chart. The flow chart uses the following tables: "14.5Table 1 – Maximum refrigerant charge

allowed in a room: indoor unit" on page 91, "14.6 Table 2 – Minimum floor area: indoor unit" on page91 and "14.7 Table 3 – Minimum
venting opening area for natural ventilation: indoor unit"on page91.

INFORMATION

Systems with a total refrigerant charge (mc) <1.84kg (i.e. if
the piping length is <27 m) are NOT subjected to any
requirements to the installation room.

INFORMATION

Multiple indoor units. If two or more indoor units are

installed in a room, you must consider the maximum
refrigerant charge that can be released in the room when a
SINGLE leak occurs. Example: If two indoor units are
installed in the room, each with its own outdoor unit, then
you have to consider the refrigerant charge of the largest
indoor-outdoor combination.

Installer reference guide

20

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

6 Preparation

t

Ø

ØiØ

i

t

ØpØ

p

6.3 Preparing refrigerant piping

6.3.1 Refrigerant piping requirements

INFORMATION

Also read the precautions and requirements in the
"General safety precautions" chapter.

▪ Piping material: Phosphoric acid deoxidised seamless copper.

▪ Piping diameter:

Liquid piping Ø6.4mm (1/4")

Gas piping Ø15.9mm (5/8")

▪ Piping temper grade and thickness:

Outer diameter

(Ø)

6.4mm (1/4") Annealed (O) ≥0.8mm

15.9mm (5/8") Annealed (O) ≥1.0mm

(a) Depending on the applicable legislation and the unit's

Temper grade Thickness (t)

maximum working pressure (see "PS High" on the unit
name plate), larger piping thickness might be required.

(a)

6.3.2 Refrigerant piping insulation

▪ Use polyethylene foam as insulation material:

▪ with a heat transfer rate between 0.041 and 0.052W/mK (0.035

and 0.045kcal/mh°C)

▪ with a heat resistance of at least 120°C

▪ Insulation thickness

Pipe outer diameter

(Øp)

6.4mm (1/4") 8~10mm 10mm

15.9mm (5/8") 16~20mm 13mm

If the temperature is higher than 30°C and the humidity is higher
than RH 80%, the thickness of the insulation materials should be at
least 20 mm to prevent condensation on the surface of the
insulation.

Insulation inner

diameter (Øi)

Insulation thickness

(t)

6.4 Preparing water piping

▪ Valve towards expansion vessel. The valve towards the

expansion vessel (if equipped) MUST be open.

▪ Connecting piping – Tools. Only use appropriate tooling to

handle brass, which is a soft material. If NOT, pipes will get
damaged.

▪ Connecting piping – Air, moisture, dust. If air, moisture or dust

gets into the circuit, problems may occur. To prevent this:

▪ Only use clean pipes

▪ Hold the pipe end downwards when removing burrs.

▪ Cover the pipe end when inserting it through a wall, to prevent

dust and/or particles from entering the pipe.

▪ Use a decent thread sealant to seal connections.

▪ Closed circuit. Use the indoor unit ONLY in a closed water

system. Using the system in an open water system will lead to
excessive corrosion.

▪ Glycol. For safety reasons, it is NOT allowed to add any kind of

glycol to the water circuit.

▪ Piping length. It is recommended to avoid long runs of piping

between the domestic hot water tank and the hot water end point
(shower, bath,…) and to avoid dead ends.

▪ Piping diameter. Select the water piping diameter in relation to

the required water flow and the available external static pressure
of the pump. See "14 Technical data"on page85 for the external
static pressure curves of the indoor unit.

▪ Water flow. You can find the minimum required water flow for

indoor unit operation in the following table. In all cases, this flow
needs to be guaranteed. When the flow is lower, the indoor unit
will stop operation and display error 7H.

Minimum required flow rate

12l/min

▪ Field supply components – Water. Only use materials that are

compatible with water used in the system and with the materials
used in the indoor unit.

▪ Field supply components – Water pressure and temperature.

Check that all components in the field piping can withstand the
water pressure and water temperature.

▪ Water pressure. The maximum water pressure is 4 bar. Provide

adequate safeguards in the water circuit to ensure that the
maximum pressure is NOT exceeded.

▪ Water temperature. All installed piping and piping accessories

(valve, connections,…) MUST withstand the following
temperatures:

INFORMATION

The following illustration is an example and might NOT
match your system layout.

6.4.1 Water circuit requirements

INFORMATION

Also read the precautions and requirements in the
"General safety precautions" chapter.

NOTICE

In case of plastic pipes, make sure they are fully oxygen
diffusion tight according to DIN 4726. The diffusion of
oxygen into the piping can lead to excessive corrosion.

▪ Connecting piping – Legislation. Make all piping connections in

accordance with the applicable legislation and the instructions in
the "Installation" chapter, respecting the water inlet and outlet.

▪ Connecting piping – Force. Do NOT use excessive force when

connecting the piping. Deformation of the piping can cause
malfunctioning of the unit.

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

Installer reference guide

21

6 Preparation

89°C

75°C

M

M

a b c d ge h ii

i

j

j

fki

HPC1

FHL1 FHL2 FHL3

HPC2 HPC3

c

d

a b

T1

M1

T1

M1

T2M2T3

M3

M

FHL1

FHL2

FHL3

M2 M3

T2 T3

HPC1 HPC2 HPC3

a b c

g hf

d e

i

i

hh

h

j

a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Motorised 3‑way valve (switch between space heating and

domestic hot water)

f Motorised 3‑way valve (mixing the main zone)
g Main pump
h Additional pump

i Shut-off valve
j Collector (field supply)

k Domestic hot water tank

HPC1...3 Heat pump convector (field supply)

FHL1...3 Floor heating loop (field supply)

▪ Drainage – Low points. Provide drain taps at all low points of the

system in order to allow complete drainage of the water circuit.

▪ Drainage – Pressure relief valve. Connect the drain hose

properly to the drain to avoid water dripping out of the unit. See

"7.4.4To connect the drain hose to the drain"on page30.

▪ Air vents. Provide air vents at all high points of the system, which

must also be easily accessible for servicing. Two automatic air
purges are provided in the indoor unit. Check that the air purges
are NOT tightened too much, so that automatic release of air in
the water circuit is possible.

▪ Zn-coated parts. Never use Zn-coated parts in the water circuit.

Because the unit's internal water circuit uses copper piping,
excessive corrosion may occur.

▪ Non-brass metallic piping. When using non-brass metallic

piping, insulate the brass and non-brass properly so that they do
NOT make contact with each other. This to prevent galvanic
corrosion.

▪ Valve – Change‑over time. When using a 2-way valve or a 3-way

valve in the water circuit, the maximum change-over time of the
valve must be 60seconds.

▪ Domestic hot water tank – Capacity. To avoid stagnation of

water, it is important that the storage capacity of the domestic hot
water tank meets the daily consumption of domestic hot water.

▪ Domestic hot water tank – After installation. Immediately after

installation, the domestic hot water tank must be flushed with fresh
water. This procedure must be repeated at least once a day the
first 5 consecutive days after installation.

▪ Domestic hot water tank – Standstills. In cases where during

longer periods of time there is no consumption of hot water, the
equipment MUST be flushed with fresh water before usage.

▪ Domestic hot water tank – Disinfection. For the disinfection

function of the domestic hot water tank, see "8.4.6 Tank" on

page58.

Installer reference guide

22

▪ Thermostatic mixing valves. In accordance with the applicable

legislation, it may be necessary to install thermostatic mixing
valves.

▪ Hygienic measures. The installation must be in compliance with

the applicable legislation and may require additional hygienic
installation measures.

▪ Recirculation pump. In accordance with the applicable

legislation, it may be required to connect a recirculation pump in
between the hot water end point and the recirculation connection
of the domestic hot water tank.

a Recirculation connection
b Hot water connection
c Shower
d Recirculation pump

▪ Valve towards expansion vessel. The valve towards the

expansion vessel (if equipped) MUST be open.

6.4.2 Formula to calculate the expansion vessel pre-pressure

The pre-pressure (Pg) of the vessel depends on the installation
height difference (H):

Pg=0.3+(H/10) (bar)

6.4.3 To check the water volume and flow rate

The indoor unit has an expansion vessel of 10litre with a factory-set
pre-pressure of 1bar.

To make sure that the unit operates properly:

▪ You must check the minimum and maximum water volume.

▪ You might need to adjust the pre-pressure of the expansion

vessel.

Minimum water volume

There are no requirements for the minimum water volume.

INFORMATION

In critical processes, or in rooms with a high heat load,
extra water might be required.

a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Motorised 3‑way valve (mixing the main zone)

f Additional pump
g Main pump
h Shut-off valve

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

6 Preparation

0.3

0.5

1

1.5

2

2.4

5020 100 150 200 250 290

a

b

a

i Collector (field supply)
j Overpressure bypass valve (delivered as accessory)

FHL1...3 Floor heating loop (field supply)

HPC1...3 Heat pump convector (field supply)

T1...3 Individual room thermostat (optional)

M1...3 Individual motorised valve to control loop FHL1...3 and

HPC1...3 (field supply)

INFORMATION

The pump of the additional zone ensures that the minimum
flow rate for correct operation of the unit is guaranteed.

Maximum water volume

Use the following graph to determine the maximum water volume for
the calculated pre-pressure.

Minimum flow rate

Check that the minimum flow rate in the installation is guaranteed in
all conditions on each zone separately. This minimum flow rate is
required during defrost/backup heater operation. For this purpose,
use the overpressure bypass valve delivered with the unit.

NOTICE

When circulation in each or certain space heating loops is

controlled by remotely controlled valves, it is important that

the minimum flow rate is guaranteed, even if all valves are

closed. In case the minimum flow rate cannot be reached,

a flow error 7H will be generated (no heating or operation).

Minimum required flow rate

12l/min

See the recommended procedure as described in "9.4 Checklist

during commissioning"on page72.

6.4.4 Changing the pre-pressure of the expansion vessel

NOTICE

Only a licensed installer may adjust the pre-pressure of the
expansion vessel.

When changing the default pre-pressure of the expansion vessel
(1bar) is required, take following guidelines into account:

a Pre-pressure (bar)

b Maximum water volume (l)

Example: Maximum water volume and expansion vessel pre­pressure

Installation

height

difference

(a)

≤200l >200l

≤7m No pre-pressure

adjustment is required.

Water volume

Do the following:

▪ Decrease the pre-

pressure according to
the required installation
height difference. The
pre-pressure should
decrease by 0.1 bar for
each metre below 7 m.

▪ Check if the water

volume does NOT
exceed the maximum
allowed water volume.

>7m Do the following:

▪ Increase the pre-

pressure according to
the required
installation height
difference. The pre­pressure should

The expansion vessel of
the indoor unit is too
small for the installation.
In this case, it is
recommended to install
an extra vessel outside
the unit.

increase by 0.1 bar for
each metre above 7 m.

▪ Check if the water

volume does NOT
exceed the maximum
allowed water volume.

(a) This is the height difference (m) between the highest point

of the water circuit and the indoor unit. If the indoor unit is
at the highest point of the installation, the installation height
is 0m.

▪ Only use dry nitrogen to set the expansion vessel pre-pressure.

▪ Inappropriate setting of the expansion vessel pre-pressure will

lead to malfunction of the system.

Changing the pre-pressure of the expansion vessel should be done
by releasing or increasing nitrogen pressure through the Schrader
valve of the expansion vessel.

a Schrader valve

6.4.5 To check the water volume: Examples

Example 1

The indoor unit is installed 5 m below the highest point in the water
circuit. The total water volume in the water circuit is 100l.

No actions or adjustments are required.

Example 2

The indoor unit is installed at the highest point in the water circuit.
The total water volume in the water circuit is 250l.

Actions:

▪ 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.

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

Installer reference guide

23

6 Preparation

1

5

8

0

1

5

0

0

0

2

a

3

1

4

5

8

0

1

5

0

0

0

2

b

3

5 3

a

b

14

5
8

0

1

5

0

0

0

5

8

0
1

5

0

0

0

2

▪ The corresponding maximum water volume at 0.3 bar is 290 l.

(See the graph in the chapter above).

▪ Because 250 l is lower than 290 l, the expansion vessel is

appropriate for the installation.

6.5 Preparing electrical wiring

6.5.1 About preparing electrical wiring

INFORMATION

Also read the precautions and requirements in the
"General safety precautions" chapter.

WARNING

▪ If the power supply has a missing or wrong N-phase,

equipment might break down.

▪ Establish proper earthing. Do NOT earth the unit to a

utility pipe, surge absorber, or telephone earth.
Incomplete earthing may cause electrical shock.

▪ Install the required fuses or circuit breakers.

▪ Secure the electrical wiring with cable ties so that the

cables do NOT come in contact with sharp edges or
piping, particularly on the high-pressure side.

▪ Do NOT use taped wires, stranded conductor wires,

extension cords, or connections from a star system.
They can cause overheating, electrical shock or fire.

▪ Do NOT install a phase advancing capacitor, because

this unit is equipped with an inverter. A phase
advancing capacitor will reduce performance and may
cause accidents.

WARNING

▪ All wiring MUST be performed by an authorised

electrician and MUST comply with the applicable
legislation.

▪ Make electrical connections to the fixed wiring.

▪ All components procured on-site and all electrical

construction MUST comply with the applicable
legislation.

WARNING

The backup heater MUST have a dedicated power supply
and MUST be protected by the safety devices required by
the applicable legislation.

WARNING

ALWAYS use multicore cable for power supply cables.

6.5.2 About preferential kWh rate power supply

Electricity companies throughout the world work hard to provide
reliable electric service at competitive prices and are often
authorized to bill clients at benefit rates. E.g. time-of-use rates,
seasonal rates, Wärmepumpentarif in Germany and Austria, ...

This equipment allows for connection to such preferential kWh rate
power supply delivery systems.

Consult with the electricity company acting as provider at the site
where this equipment is to be installed to know whether it is
appropriate to connect the equipment in one of the preferential kWh
rate power supply delivery systems available, if any.

When the equipment is connected to such preferential kWh rate
power supply, the electricity company is allowed to:

▪ interrupt power supply to the equipment for certain periods of time;

▪ demand that the equipment only consumes a limited amount of

electricity during certain periods of time.

The indoor unit is designed to receive an input signal by which the
unit switches into forced 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.

6.5.3 Overview of electrical connections except external actuators

Normal power

supply

a Normal power supply
b Preferential kWh rate power supply
1 Power supply for outdoor unit
2 Power supply and interconnection cable to indoor unit
3 Power supply for backup heater
4 Preferential kWh rate power supply (voltage free contact)
5 Normal kWh rate power supply (to power the indoor unit

PCB in the event of power supply interruption of the
preferential kWh rate power supply)

Preferential kWh rate power supply

Power supply is
NOT interrupted

Power supply is

interrupted

During preferential
During preferential
kWh rate power
supply activation,
power supply is NOT
interrupted. The
outdoor unit is turned
off by the control.

Remark: The
electricity company
must always allow the
power consumption
of the indoor unit.

kWh rate power

supply activation,

power supply is

interrupted

immediately or after

some time by the

electricity company.

In this case, the

indoor unit must be

powered by a

separate normal

power supply.

6.5.4 Overview of electrical connections for external and internal actuators

Item Description Wires Maximum

running

current

Outdoor unit and indoor unit power supply

1 Power supply for

2+GND

outdoor unit

2 Power supply and

3
interconnection cable to
indoor unit

3 Power supply for

See table below. —
backup heater

4 Preferential kWh rate

2
power supply (voltage
free contact)

5 Normal kWh rate power

2 6.3A
supply

Optional equipment

(a)

(f)

(d)

Installer reference guide

24

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

7 Installation

Item Description Wires Maximum

running

current

6 User interface used as

2

(e)

room thermostat

7 Room thermostat 3 or 4 100mA

8 Outdoor ambient

2

(b)

temperature sensor

9 Indoor ambient

2

(b)

temperature sensor

10 Heat pump convector 2 100mA

Field supplied components

11 Shut-off valve 2 100mA

12 Electricity meter 2 (per meter)

13 Domestic hot water

2

(b)

(b)

pump

14 Alarm output 2

15 Changeover to external

2

(b)

(b)

heat source control

16 Space heating

2

(b)

operation control

17 Power consumption

digital inputs

18 Safety thermostat for

2 (per input
signal)

2

(b)

(b)

the main zone

19 Safety thermostat for

2

(d)

the additional zone

(a) Refer to name plate on outdoor unit.
(b) Minimum cable section 0.75mm².
(c) Cable section 2.5mm².
(d) Cable section 0.75mm² till 1.25mm²; maximum length:

50m. Voltage-free contact shall ensure the minimum
applicable load of 15VDC, 10mA.

(e) Cable section 0.75mm² till 1.25mm²; maximum length:

500m.

(f) Cable section 1.5mm².

NOTICE

More technical specifications of the different connections
are indicated on the inside of the indoor unit.

NOTICE

A safety thermostat (normal closed contact) MUST be
installed for the main zone. See "7.9.17 To connect the

safety thermostat (normally closed contact)"on page43.

Backup heater

type

Power supply Required number of

conductors

*6V 1N~ 230V (6V) 2+GND

3~ 230V (6T1) 3+GND

*9W 3N~ 400V 4+GND

Typical workflow

Installation typically consists of the following stages:

1 Mounting the outdoor unit.

2 Mounting the indoor unit.

(b)

3 Connecting the refrigerant piping.

4 Checking the refrigerant piping.

5 Charging refrigerant.

6 Connecting the water piping.

7 Connecting the electrical wiring.

(b)

(b)

8 Finishing the outdoor installation.

9 Finishing the indoor installation.

INFORMATION

If you have limited installation space, do the following
before installing the unit in its final position: "7.4.4 To

connect the drain hose to the drain" on page 30. It

requires to remove one or both side panels.

INFORMATION

Depending on the units and/or the installation conditions, it
might be necessary to connect electrical wiring before you
can charge refrigerant.

7.2 Opening the units

7.2.1 About opening the units

At certain times, you have to open the unit. Example:

▪ When connecting the refrigerant piping

▪ When connecting the electrical wiring

▪ When maintaining or servicing the unit

DANGER: RISK OF ELECTROCUTION

Do NOT leave the unit unattended when the service cover
is removed.

7.2.2 To open the outdoor unit

DANGER: RISK OF ELECTROCUTION

DANGER: RISK OF BURNING

See "7.5.8To connect the refrigerant piping to the outdoor unit" on

page 33 and "7.9.6 To connect the electrical wiring on the outdoor
unit"on page38.

7.2.3 To open the indoor unit

1 Remove the top panel.

7 Installation

7.1 Overview: Installation

This chapter describes what you have to do and know on-site to
install the system.

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

Installer reference guide

25

7 Installation

7×

T25

2

1

1

3

4×

T25

4×

T25

1

2

2×

T25

2 Remove the user interface panel. Open the hinges at the top

and slide the top panel upwards.

NOTICE

If you remove the user interface panel, also disconnect the
cables from the back of the user interface panel to prevent
damage.

7.2.4 To open the switch box cover of the indoor unit

3 If necessary, remove the front plate. This is, for example,

necessary in the following cases:

▪ "7.2.5 To lower the switch box on the indoor unit" on

page26

▪ "7.4.4To connect the drain hose to the drain"on page30
▪ When you need access to the high voltage switch box

7.2.5 To lower the switch box on the indoor unit

During the installation, you will need access to the inside of the
indoor unit. To have easier front access, put the switch box lower on
the unit as follows:

Prerequisite: The user interface panel and front panel have been
removed.

1 Remove the top panel that keeps the switch box in place at the

top of the unit.

2 Tilt the switch box to the front and lift it out of its hinges.

Installer reference guide

26

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

7 Installation

3

3

a

b

c

(mm)

0 mm

<150

a

>300

300

600

>100

0 mm

3 Place the switch box lower on the unit. Use the 2 hinges located

lower on the unit.

7.3 Mounting the outdoor unit

7.3.1 About mounting the outdoor unit

When

You have to mount the outdoor and indoor unit before you can
connect the refrigerant and water piping.

Typical workflow

Mounting the outdoor unit typically consists of the following stages:

1 Providing the installation structure.

2 Installing the outdoor unit.

3 Providing drainage.

4 Preventing the unit from falling over.

5 Protecting the unit against snow and wind by installing a snow

cover and baffle plates. See "Preparing installation site" in

"6Preparation"on page16.

INFORMATION

If you install the U-beams in combination with the low
sound cover (EKLN08A1), different installation instructions
apply for the U-beams. See the installation manual of the
low sound cover.

a Low sound cover

b Bottom parts of the low sound cover

c U-beams

Option 1: On mounting feet "flexi-foot with strut"

7.3.2 Precautions when mounting the outdoor unit

INFORMATION

Also read the precautions and requirements in the
following chapters:

▪ General safety precautions

▪ Preparation

7.3.3 To provide the installation structure

Check the strength and level of the installation ground so that the
unit will not cause any operating vibration or noise.

Fix the unit securely by means of foundation bolts in accordance
with the foundation drawing.

This topic shows different installation structures. For all, use 4 sets
of M8 or M10 anchor bolts, nuts and washers. In any case, provide
at least 300 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.

INFORMATION

The maximum height of the upper protruding part of the
bolts is 15mm.

a Maximum snowfall height

Option 2: On plastic mounting feet

In this case, you can use the bolts, nuts, washers and spring
washers delivered with the unit as accessories.

Option 3: On a pedestal with the EKFT008D option kit

The EKFT008D option kit is recommended in areas with heavy
snowfall.

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

Installer reference guide

27

7 Installation

300

600

<150

<150

(mm)

>300

100

a

b

0 mm

>250

>300

>250

(mm)

a

b

c

4×

2×

3

2

1

a a

a

b

a Maximum snowfall height
b EKFT008D option kit

Option 4: On brackets to the wall with the EKFT008D option kit

The EKFT008D option kit is recommended in areas with heavy
snowfall.

7.3.4 To install the outdoor unit

CAUTION

Do NOT remove the protective cardboard before the unit is
installed properly.

1 Lift the outdoor unit as described in "3.2.2 To handle the

outdoor unit"on page7.

2 Install the outdoor unit as follows:

▪ (1) Put the unit into position (using the sling to the left and

the handle to the right).
▪ (2) Remove the sling (by pulling 1 side of the sling).
▪ (3) Fix the unit.

Installer reference guide

28

a Maximum snowfall height
b EKFT008D option kit
c Anti-vibration rubber (field supply)

a Air outlet

NOTICE

Properly align the unit. Make sure the backside of the unit
does NOT protrude.

3 Remove the protective cardboard and instruction sheet.

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06

a Protective cardboard

b

a

c

355 mm

600 mm

a

b

d
c

c

b

b Instruction sheet

7.3.5 To provide drainage

▪ Make sure that condensation water can be evacuated properly.

▪ Install the unit on a base to make sure that there is proper

drainage in order to avoid ice accumulation.

▪ Prepare a water drainage channel around the foundation to drain

waste water away from the unit.

▪ Avoid drain water flowing over the footpath, so that it does NOT

become slippery in case of ambient freezing temperatures.

▪ If you install the unit on a frame, install a waterproof plate within

150 mm of the bottom side of the unit in order to prevent water
from getting into the unit and to avoid drain water dripping (see the
following figure).

NOTICE

If the drain holes of the outdoor unit are blocked up,
provide space of at least 300mm below the outdoor unit.

▪ Drain pan. You can use the drain pan option (EKDP008D) to

gather the drain water. For the complete installation instructions,
see the installation manual of the drain pan. In short, the drain pan
must be installed level (with a tolerance of 1° at all sides) and as
follows:

7 Installation

▪ Drain pan heater. You can use the drain pan heater option

(EKDPH008CA) to prevent freezing-up of the drain pan. For the
installation instructions, see the installation manual of the drain
pan heater.

▪ Non-heated drain tube. When using the drain pan heater without

drain tube or with a non-heated drain tube, remove the drain hole
insulation (Item c on the illustration).

INFORMATION

If you install the drain pan kit (with or without drain pan
heater) in combination with the low sound cover
(EKLN08A1), different installation instructions apply for the
drain pan kit. See the installation manual of the low sound
cover.

a Drain pan

b U-beams

c Drain hole insulation

a Low sound cover

b Bottom parts of the low sound cover

c Drain pan kit

d Drain pan heater

7.3.6 To prevent the outdoor unit from falling over

In case the unit is installed in places where strong wind can tilt the
unit, take following measure:

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06

1 Prepare 2 cables as indicated in the following illustration (field

supply).

2 Place the 2 cables over the outdoor unit.

3 Insert a rubber sheet between the cables and the outdoor unit

to prevent the cables from scratching the paint (field supply).

4 Attach the ends of the cables and tighten them.

Installer reference guide

29

7 Installation

≤1°

0°

1° 1°

1

3×

T25

3

2

7.4 Mounting the indoor unit

7.4.1 About mounting the indoor unit

When

You have to mount the outdoor and indoor unit before you can
connect the refrigerant and water piping.

Typical workflow

Mounting the indoor unit typically consists of the following stages:

1 Installing the indoor unit.

7.4.2 Precautions when mounting the indoor unit

NOTICE

Do NOT tilt the unit forwards:

7.4.4 To connect the drain hose to the drain

Water coming from the pressure relief valve is collected in the drain
pan. The drain pan is connected to a drain hose inside the unit. You
must connect the drain hose to an appropriate drain according to the
applicable legislation. You can route the drain hose through the left
or right side panel.

Prerequisite: The user interface panel and front panel have been
removed.

1 Remove one of the side panels.

2 Cut out the rubber grommet.

3 Pull the drain hose through the hole.

4 Reattach the side panel. Ensure the water can flow through the

drain tube.

It is recommended to use a tundish to collect the water.

Option 1: Through the left side panel

INFORMATION

Also read the precautions and requirements in the
following chapters:

▪ General safety precautions

▪ Preparation

7.4.3 To install the indoor unit

1 Lift the indoor unit from the pallet and place it on the floor. Also

see "3.3.3To handle the indoor unit"on page8.

2 Connect the drain hose to the drain. See "7.4.4To connect the

drain hose to the drain"on page30.

3 Slide the indoor unit into position.

4 Adjust the height of the leveling feet to compensate for floor

irregularities. The maximum allowed deviation is 1°.

Installer reference guide

30

ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +

EHVZ04+08S18+23DJ

Daikin Altherma 3 R F

4P495249-1B – 2019.06