Daikin Altherma 3 WS EWSAH06UD Series User manual

Installation manual
Daikin Altherma 3 WS English
Installation manual
Daikin Altherma 3 WS
EWSAH06UD▲9W▼
EWSAX06UD▲9W▼
▲= 1, 2, 3, …, 9, A, B, C, …, Z
▼= , , 1, 2, 3, …, 9

Table of contents
Installation manual
2
EWSAH/X06UD
Daikin Altherma 3 WS
4P675760-1C – 2023.02
Table of contents
1 About the documentation 2
1.1 About this document.................................................................. 2
2 Specific installer safety instructions 3
3 About the box 4
3.1 Indoor unit ................................................................................. 5
3.1.1 To remove the accessories from the indoor unit......... 5
3.1.2 To handle the indoor unit ............................................ 5
3.2 Domestic hot water tank kit ....................................................... 5
3.2.1 To remove the accessories from the domestic hot
water tank kit............................................................... 5
3.3 Checklist for the required DHW accessories............................. 5
4 Unit installation 6
4.1 Preparing the installation site .................................................... 6
4.1.1 Installation site requirements of the indoor unit .......... 6
4.2 Opening and closing the unit..................................................... 6
4.2.1 To open the indoor unit............................................... 6
4.2.2 To remove the hydro module from the unit................. 7
4.2.3 To close the indoor unit............................................... 9
4.3 Mounting the indoor unit............................................................ 9
4.3.1 To install the indoor unit.............................................. 9
4.3.2 To connect the drain hose to the drain ....................... 10
5 Piping installation 10
5.1 Preparing piping ........................................................................ 10
5.1.1 To check the water volume and flow rate of the
space heating circuit and the central water loop
circuit........................................................................... 10
5.2 Connecting the central water loop piping .................................. 11
5.2.1 To connect the central water loop piping .................... 11
5.2.2 To fill the central water loop circuit.............................. 11
5.2.3 To insulate the central water loop piping .................... 11
5.3 Connecting water piping............................................................ 11
5.3.1 To connect the water piping........................................ 11
5.3.2 To connect the water piping for domestic hot water ... 13
5.3.3 To connect the recirculation piping ............................. 14
5.3.4 To fill the space heating circuit.................................... 14
5.3.5 To fill the domestic hot water tank .............................. 14
5.3.6 To check for water leaks ............................................. 14
5.3.7 To insulate the water piping........................................ 14
6 Electrical installation 15
6.1 About electrical compliance....................................................... 15
6.2 Safety device requirements....................................................... 15
6.3 Overview of electrical connections for external and internal
actuators.................................................................................... 15
6.4 To connect the main power supply............................................ 16
6.5 To connect the remote outdoor sensor ..................................... 19
6.5.1 To change settings if remote outdoor sensor cannot
be installed correctly ................................................... 19
6.6 To connect the shut-off valve .................................................... 19
6.7 To connect the electricity meters............................................... 20
6.8 To connect the domestic hot water pump ................................. 20
6.9 To connect the alarm output...................................................... 21
6.10 To connect the space cooling/heating ON/OFF output ............. 21
6.11 To connect the changeover to external heat source ................. 22
6.12 To connect the power consumption digital inputs ..................... 23
6.13 To connect the safety thermostat (normally closed contact) ..... 23
6.14 To connect the brine low pressure switch ................................. 24
6.15 To connect the thermostat for passive cooling.......................... 24
6.16 LAN adapter .............................................................................. 25
6.16.1 About the LAN adapter ............................................... 25
6.16.2 Overview of electrical connections.............................. 26
6.16.3 Router ......................................................................... 26
6.16.4 Electricity meter .......................................................... 26
6.16.5 Solar inverter/energy management system ................. 27
7 Configuration 28
7.1 Overview: Configuration ............................................................. 28
7.1.1 To access the most used commands .......................... 29
7.2 Configuration wizard................................................................... 29
7.2.1 Configuration wizard: Language .................................. 30
7.2.2 Configuration wizard: Time and date ........................... 30
7.2.3 Configuration wizard: System ...................................... 30
7.2.4 Configuration wizard: Backup heater ........................... 31
7.2.5 Configuration wizard: Main zone.................................. 31
7.2.6 Configuration wizard: Additional zone.......................... 32
7.2.7 Configuration wizard: Tank .......................................... 32
7.3 Weather-dependent curve.......................................................... 33
7.3.1 What is a weather-dependent curve? .......................... 33
7.3.2 2-points curve .............................................................. 33
7.3.3 Slope-offset curve ........................................................ 34
7.3.4 Using weather-dependent curves ................................ 34
7.4 Settings menu ............................................................................ 35
7.4.1 Main zone .................................................................... 35
7.4.2 Additional zone ............................................................ 35
7.4.3 Information ................................................................... 35
7.4.4 Central water loop freezing temperature...................... 36
7.4.5 Central water loop valve opening................................. 36
7.5 Menu structure: Overview installer settings................................ 37
8 Commissioning 38
8.1 Checklist before commissioning................................................. 38
8.2 Checklist during commissioning ................................................. 38
8.2.1 To perform an air purge on the water circuit ................ 38
8.2.2 To perform an air purge on the central water loop
circuit............................................................................ 39
8.2.3 To perform an operation test run ................................. 39
8.2.4 To perform an actuator test run ................................... 39
8.2.5 To perform an underfloor heating screed dryout.......... 39
9 Hand-over to the user 40
10 Maintenance and service 40
10.1 Maintenance safety precautions................................................. 40
10.2 Yearly maintenance.................................................................... 40
10.2.1 Yearly maintenance: overview ..................................... 40
10.2.2 Yearly maintenance: instructions ................................. 40
10.3 To drain the domestic hot water tank ......................................... 42
10.4 To inspect the inside of the domestic hot water tank ................. 42
11 Technical data 43
11.1 Piping diagram: Indoor unit ........................................................ 43
11.2 Wiring diagram: Indoor unit ........................................................ 44
11.3 Technical specifications: Domestic hot water tank..................... 48
11.3.1 Test results in accordance with EN12897 (2016) ........ 48
11.3.2 Warning label ............................................................... 48
1 About the documentation
1.1 About this document
INFORMATION
Make sure that the user has the printed documentation and
ask him/her to keep it for future reference.
Target audience
Authorised installers
Documentation set
This document is part of a documentation set. The complete set
consists of:

2 Specific installer safety instructions
Installation manual
3
EWSAH/X06UD
Daikin Altherma 3 WS
4P675760-1C – 2023.02
▪General safety precautions:
▪ Safety instructions that you must read before installing
▪ Format: Paper (in the box of the unit)
▪Operation manual:
▪ Quick guide for basic usage
▪ Format: Paper (in the box of the unit)
▪User reference guide:
▪ Detailed step-by-step instructions and background information
for basic and advanced usage
▪ Format: Digital files on https://www.daikin.eu. Use the search
function to find your model.
▪Installation manual:
▪ Installation instructions
▪ Format: Paper (in the box of the unit)
▪Installer reference guide:
▪ Preparation of the installation, good practices, reference
data,…
▪ Format: Digital files on https://www.daikin.eu. Use the search
function to find your model.
▪Addendum book for optional equipment:
▪ Additional info about how to install optional equipment
▪ Format: Paper (in the box of the unit) + Digital files on https://
www.daikin.eu. Use the search function to find your model.
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
Business Portal (authentication required).
Online tools
In addition to the documentation set, some online tools are available
for installers:
▪Heating Solutions Navigator
▪ Digital toolbox that offers a variety of tools to facilitate the
installation and configuration of heating systems.
▪ To access Heating Solutions Navigator, registration to the
Stand By Me platform is required. For more information, see
https://professional.standbyme.daikin.eu.
▪Daikin e-Care
▪ Mobile app for installers and service technicians that allows you
to register, configure and troubleshoot heating systems.
▪ The mobile app can be downloaded for iOS and Android
devices using the QR codes below. Registration to the Stand
By Me platform is required to access the app.
App Store Google Play
▪Engineering guide for collective housing
▪ Digital engineering toolbox which provides guidelines to define
the central water loop technical specifications. For more
information see Engineering guide at https://
collectivehousing.daikin.eu.
2 Specific installer safety
instructions
Always observe the following safety instructions and regulations.
Installation site (see "4.1Preparing the installation site"[46])
WARNING
Follow the service space dimensions in this manual for
correct installation of the unit. See "4.1.1 Installation site
requirements of the indoor unit"[46].
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).
Special requirements for R32 (see "Special requirements for
R32"[46])
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Be aware that the refrigerant inside the system is
odourless.
WARNING
Make sure installation, servicing, maintenance and repair
comply with instructions from Daikin and with applicable
legislation and are executed ONLY by authorised persons.
Opening and closing the unit (see "4.2Opening and closing the
unit"[46])
DANGER: RISK OF ELECTROCUTION
Do NOT leave the unit unattended when the service cover
is removed.
DANGER: RISK OF BURNING/SCALDING
CAUTION
The hydro module is heavy. It requires at least two persons
to carry it.
Mounting the indoor unit (see "4.3Mounting the indoor
unit"[49])
WARNING
Fixing method of the indoor unit MUST be in accordance
with the instructions from this manual. See "4.3 Mounting
the indoor unit"[49].
Piping installation (see "5Piping installation"[410])
WARNING
The field piping method MUST be in accordance with the
instructions from this manual. See "5 Piping
installation"[410].
DANGER: RISK OF BURNING/SCALDING

3 About the box
Installation manual
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Daikin Altherma 3 WS
4P675760-1C – 2023.02
WARNING
It is the responsibility of the installer to ensure the
compatibility of field piping with the used anti-freeze fluid in
the central water loop circuit. Do NOT use Zn-coated
piping, as this may lead to excessive corrosion.
WARNING
Before, during and after filling carefully check the central
water loop circuit for leakage.
WARNING
Temperature of the fluid running through the evaporator
can become negative. It MUST be protected against
freezing. For more information, see setting [A‑04] in
"7.4.4Central water loop freezing temperature"[436].
WARNING
The discharge pipes from the pressure relief valves MUST
terminate in a safe and visible position without forming any
risk to persons in the vicinity.
WARNING
▪ Discharge piping, tundish, drain valves, etc. MUST be
positioned away from any electrical components.
▪ The discharge pipe away from the tundish MUST
terminate in a safe, visible position without forming any
risk to persons in the vicinity.
WARNING
▪ Do NOT install any valves between the domestic hot
water tank and relief valves/expansion vessel.
▪ Do NOT install shut-off valves between the expansion
relief valve and the domestic hot water tank.
Electrical installation (see "6Electrical installation"[415])
DANGER: RISK OF ELECTROCUTION
WARNING
Electrical wiring connection method MUST be in
accordance with the instructions from:
▪ This manual. See "6Electrical installation"[415].
▪ The wiring diagram, which is delivered with the unit,
located on the inside of the indoor unit front panel. For
a translation of its legend, see "11.2 Wiring diagram:
Indoor unit"[444].
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
national wiring regulation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical
construction MUST comply with the applicable
legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
If the supply cord is damaged, it MUST be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
CAUTION
Do NOT push or place redundant cable length into the unit.
INFORMATION
Details of type and rating of fuses, or rating of circuit
breakers are described in "6Electrical installation"[415].
LAN adapter (see "6.16LAN adapter"[425])
WARNING
Make sure to connect the electricity meter in the correct
direction, so that it measures the total energy injected
INTO the grid.
WARNING
Make sure X1A/N+L are protected by a fast acting circuit
breaker (rated current 100mA~6A, typeB).
WARNING
When connecting the wiring to LAN adapter terminal X1A,
make sure each wire is securely fastened to the
appropriate terminal. Use a screwdriver to open the wire
clamps. Make sure the bare copper wire is fully inserted
into the terminal (bare copper wire CANNOT be visible).
1
3
2
Commissioning (see "8Commissioning"[438])
WARNING
Commissioning method MUST be in accordance with the
instructions from this manual. See
"8Commissioning"[438].
Maintenance and service (see "10Maintenance and
service"[440])
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
CAUTION
Discharge may be very hot.
CAUTION
Water coming out of the valve may be very hot.
WARNING
If the internal wiring is damaged, it has to be replaced by
the manufacturer, its service agent or similarly qualified
persons.
DANGER: RISK OF BURNING/SCALDING
The water in the tank can be very hot.
3 About the box
Keep the following in mind:
▪ At delivery, the unit MUST be checked for damage and
completeness. Any damage or missing parts 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 in advance the path along which you want to bring the
unit to its final installation position.

3 About the box
Installation manual
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EWSAH/X06UD
Daikin Altherma 3 WS
4P675760-1C – 2023.02
3.1 Indoor unit
INFORMATION
This unit has been tested and approved according to
BSEN12897:2016
3.1.1 To remove the accessories from the
indoor unit
1×
a
1×
b
1×
g
1×
h
1×
i
1×
j
1×
c
1×
e
4×
d
ENERG IJAY
IAIE
ENERG IJAY
IAIE
1×
f
aShut-off valve with integrated filter
bRemote outdoor sensor (with installation manual)
cCable for remote outdoor sensor (40m)
dO-rings (spares for hydro module shut-off valves)
eTundish
fEnergy label
gGeneral safety precautions
hAddendum book for optional equipment
iInstallation manual
jOperation manual
3.1.2 To handle the indoor unit
Mind the following guidelines when handling the unit:
>200
kg
▪ Use a trolley to transport the unit. Make sure to use a trolley with a
sufficiently long horizontal ledge, suitable for transportation of
heavy appliances.
▪ When transporting the unit, keep the unit upright.
▪ Use the handles at the back to carry the unit.
▪ Remove the hydro module before you carry the unit up or down
staircases. See "4.2.2 To remove the hydro module from the
unit"[47].
▪ It is recommended to use lifting straps to carry the unit up or down
staircases.
3.2 Domestic hot water tank kit
3.2.1 To remove the accessories from the
domestic hot water tank kit
d
b
a
c
e
g
f
aPressure reducing valve/pressure relief valve
combination. Water inlet and water outlet 22mm
connection, discharge piping connection 15mm
bAdaptor 22mm×3/4" Female BSP
cT-piece 22mm×22mm×22mm
dTundish 15mm inlet, 22mm outlet
eWall mounting set for expansion vessel
fInstruction sheet
gExpansion vessel of 18l (EKUHWG3D) or 8l
(EKUHWG3DS) – 3/4" Male BSP
NOTICE
All piping MUST be installed according to section G3 of the
Building Regulations.
3.3 Checklist for the required DHW
accessories
For installation compliant with section G3 of the Building
Regulations, you must verify that the following accessories are
present.
Delivered with indoor unit:
Tundish 15mm inlet, 22mm outlet
Delivered with domestic hot water tank kit:
Pressure reducing valve/pressure relief valve combination
Adaptor 22mm×3/4" Female BSP
T-piece 22mm×22mm×22mm
Tundish 15mm inlet, 22mm outlet
Wall mounting set for expansion vessel
Instruction sheet
Expansion vessel of 18 l (EKUHWG3D) or 8 l
(EKUHWG3DS) – 3/4" Male BSP

4 Unit installation
Installation manual
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Daikin Altherma 3 WS
4P675760-1C – 2023.02
4 Unit installation
4.1 Preparing the installation site
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).
4.1.1 Installation site requirements of the
indoor unit
▪ Mind the following spacing installation guidelines:
≥300
≥650
≥ 500
(mm)
50
INFORMATION
If you have limited installation space and need to install the
option kit EKGSPOWCAB (= power cable for split power
supply), remove the left side panel before installing the unit
in its final position. See "4.2.1 To open the indoor
unit"[46].
▪ The indoor unit is designed for indoor installation only and for
ambient temperatures ranging from 5~35°C.
Special requirements for R32
The indoor unit contains an internal refrigerant circuit (R32), but you
do NOT have to do any refrigerant field piping or refrigerant
charging.
The total refrigerant charge in the system is ≤1.842 kg, so the
system is NOT subjected to any requirements to the installation
room. However, mind the following requirements and precautions:
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Be aware that the refrigerant inside the system is
odourless.
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).
WARNING
Make sure installation, servicing, maintenance and repair
comply with instructions from Daikin and with applicable
legislation and are executed ONLY by authorised persons.
4.2 Opening and closing the unit
4.2.1 To open the indoor unit
NOTICE
For a standard installation, it is usually NOT required to
open the unit. Opening the unit or any of the switch boxes
is ONLY required when you want to install extra option kits.
For more information, see the installation manual of the
specific option kit, or below.
Overview
c
b
a
e
f
d
aTop panel
bUser interface panel
cFront panel
dLeft side panel
eInstaller switch box cover
fMain switch box cover
Open
1Remove the top panel.
5×
T25
2Remove the user interface panel. Open the hinges at the top
and slide the user interface 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.
1
1
2

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Installation manual
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4P675760-1C – 2023.02
3If necessary, remove the front panel. This is, for example,
necessary when you want to remove the hydro module from the
unit. See "4.2.2 To remove the hydro module from the
unit"[47] for more information.
2×
T25
4In case you want to install the option kit EKGSPOWCAB
(=power cable for split power supply), also remove the left side
panel. Also see "6.4To connect the main power supply"[416].
3×
T25
5Open the installer switch box as follows:
2×
T25
6In case you have to install additional options that require access
to the main switch box, remove the main switch box cover as
follows:
4×
4.2.2 To remove the hydro module from the unit
Removing the hydro module is only required for easier transportation
of the unit or for servicing. The removal of the module will
significantly reduce the weight of the unit. This makes the unit easier
to handle and carry.
1Open the following (see "4.2.1To open the indoor unit"[46]):
1User interface panel
2
1
2Front panel
2Remove the insulation from the shut-off valves by cutting the
cable ties.

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Installation manual
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4P675760-1C – 2023.02
3Remove the clips that lock the valves in place.
b
a
a b b a
aPipes for central water loop circuit
bPipes for space heating/cooling circuit
4Uncouple the piping.
4×
5Remove the lower hydro module cover.
4×
T25
6Unlink the connectors that run from the hydro module to the
main switch box or other locations. Route the wires through the
grommets of the upper hydro module cover.
X22Y
X11YB
X803YA X1YA
7Remove the upper hydro module cover. You can lift up the
uncoupled piping to access the screws more easily, and to take
off the cover itself.
5×
T25
8Remove the screw that fixes the hydro module to the bottom
plate.
1×
T25
9Lift the uncoupled piping and use the handle on the front of the
module to carefully slide the module out of the unit. Make sure
the module remains level and does not tilt forward.

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Installation manual
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CAUTION
The hydro module is heavy. It requires at least two persons
to carry it.
NOTICE
Make sure not to damage any insulation during the
removal process.
Removal after first installation
If the water circuit and the central water loop circuit have been filled
before, drain all remaining water from the hydro module before you
remove the module:
1Remove the insulation from the shut-off valves. (See step 2 in
"4.2.2To remove the hydro module from the unit"[47].)
2Close the shut-off valves by turning the lever handles.
4×
3Remove the lower hydro module cover. (See step 5 in "4.2.2To
remove the hydro module from the unit"[47].)
4Drain remaining water from the hydro module.
a
b
aWater drain valve
bCentral water loop drain valve
NOTICE
Ensure that no water can enter the switch box of the hydro
module.
5Perform the remaining steps as described in "4.2.2 To remove
the hydro module from the unit"[47].
4.2.3 To close the indoor unit
1If applicable, reinstall the left side panel.
2If applicable, reinsert the hydro module.
3If applicable, close the cover of the main switch box and
reinstall the front panel.
4Close the cover of the installer switch box.
5Reconnect the cables to the user interface panel.
6Reinstall the user interface panel.
7Reinstall the top panel.
NOTICE
When closing the indoor unit cover, make sure that the
tightening torque does NOT exceed 4.1N•m.
4.3 Mounting the indoor unit
4.3.1 To install the indoor unit
1Lift the indoor unit from the pallet and place it on the floor. See
"3.1.2To handle the indoor unit"[45].
2Connect the drain hose to the drain. See "4.3.2To connect the
drain hose to the drain"[410].
3Slide the unit into position.
4Adjust the height of the 4 levelling feet of the outer frame to
compensate for floor irregularities. The maximum allowed
deviation is 1°.
≤1°
NOTICE
Do NOT tilt the unit forwards:
1° 1°
0°
NOTICE
To avoid structural damage on unit, ONLY move the unit
when levelling feet are at their lowest position.

5 Piping installation
Installation manual
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Daikin Altherma 3 WS
4P675760-1C – 2023.02
NOTICE
For optimum sound reduction, carefully check if there is no
gap between the bottom frame and the floor.
4.3.2 To connect the drain hose to the drain
Condensate can form inside the unit during cooling operation or with
low central water loop temperatures. The top and backup heater
drain pans are connected to a drain hose inside the unit. You must
connect the drain hose to an appropriate drain according to the
applicable legislation. Route the drain hose through the rear panel,
towards the right side of the unit.
5 Piping installation
5.1 Preparing piping
WARNING
It is the responsibility of the installer to ensure the
compatibility of field piping with the used anti-freeze fluid in
the central water loop circuit. Do NOT use Zn-coated
piping, as this may lead to excessive corrosion.
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.
NOTICE
All piping MUST be installed according to section G3 of the
Building Regulations.
NOTICE
Circuit requirements. Make sure to comply with the fluid
pressure and fluid temperature requirements below. For
additional circuit requirements, see the installer reference
guide.
▪Fluid pressure – Domestic hot water tank. The maximum fluid
pressure of the domestic hot water tank is 10bar (=1.0MPa), and
must be in accordance with the applicable legislation. Provide
adequate safeguards in the water circuit to ensure that the
maximum pressure is NOT exceeded (see "5.3.2To connect the
water piping for domestic hot water" [4 13]). The minimum fluid
pressure to operate is 1 bar (=0.1MPa).
▪Fluid pressure – Space heating and central water loop circuit.
The maximum fluid pressure is:
▪ For the space heating circuit: 3bar (0.3MPa),
▪ For the central water loop ciruit: 16bar (1.6MPa).
▪Fluid temperature. All installed piping and piping accessories
(valve, connections,…) MUST withstand the following
temperatures:
INFORMATION
The following figure is an example and may NOT
completely match your system layout
65°C
70°C
5.1.1 To check the water volume and flow rate
of the space heating circuit and the
central water loop circuit
Minimum water volume
Check that the total water volume per circuit in the installation is
minimum 20 litre, the internal water volume of the indoor unit NOT
included.
INFORMATION
If a minimum heating load of 1kW can be guaranteed and
setting [4.B] Space heating/cooling > Overshoot
(overview field setting [9‑04]) is 4°C, the minimum water
volume can be lowered to 10litre.
INFORMATION
In critical processes, or in rooms with a high heat load,
extra water might be required.
NOTICE
When circulation in each space heating/cooling loop is
controlled by remotely controlled valves, it is important that
the minimum water volume is guaranteed, even if all of the
valves are closed.
Minimum flow rate
Minimum required flow rate
Heat pump operation No minimum required flow
Cooling operation 10l/min
Backup heater operation No minimum required flow during
heating
INFORMATION
The flow rate of the central water loop circuit can vary up to
10% as a result of the tolerance of the pressure
independent control valve (PICV).

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5.2 Connecting the central water loop
piping
NOTICE
The integrated central water loop valve is a pressure
independent control valve (PICV) which regulates the flow
on the central water loop circuit. To guarantee a correct
operation of the unit, ensure that the least favoured unit
(the unit furthest away from the central pump) has a
minimum of 33 kPa differential pressure available. The
maximum allowed differential pressure is 400kPa.
5.2.1 To connect the central water loop piping
NOTICE
Do NOT use excessive force when connecting the field
piping and make sure the piping is aligned properly.
Deformation of the piping can cause malfunctioning of the
unit.
ab
aCentral water loop circuit OUT (Ø28mm)
bCentral water loop circuit IN (Ø28mm)
NOTICE
To facilitate service and maintenance, it is recommended
to install shut-off valves as close as possible to the inlet
and outlet of the unit.
Example of piping layout
The following diagram is a proposed piping layout for the indoor
piping between the central water loop and the unit.
a b
d
c
d
e
aCentral water loop circuit IN
bCentral water loop circuit OUT
cManometer
dAir purge valve
eFilter
NOTICE
The central water loop MUST have an expansion vessel
and a safety valve with a pressure rating of maximum 16
bar. The specifications and exact location depend on the
design of the total system.
5.2.2 To fill the central water loop circuit
WARNING
Before, during and after filling carefully check the central
water loop circuit for leakage.
INFORMATION
The materials used in the central water loop circuit of the
unit are chemically resistant to the following anti-freeze
fluids:
▪ 40 mass% propylene glycol
▪ 35 mass% ethylene glycol
NOTICE
Do NOT use the following substances in the central water
loop circuit or in the glycol inhibitors, they can harm the
EPDM of the pressure independent control valve (PICV):
▪ Acids
▪ Lubricants
▪ Oils
▪ Products containing chlorine or fluorine
▪ Alcohols
▪ Petroleum products
▪ Solvents
▪ Lacquers
NOTICE
A field supplied filling kit may come without a filter that
protects components in the central water loop circuit. In
this case, it is the responsibility of the installer to install a
filter on the central water loop side of the system.
WARNING
Temperature of the fluid running through the evaporator
can become negative. It MUST be protected against
freezing. For more information, see setting [A‑04] in
"7.4.4Central water loop freezing temperature"[436].
5.2.3 To insulate the central water loop piping
The piping in the complete central water loop circuit MUST be
insulated to prevent reduction of the heating capacity.
Consider that the central water loop circuit piping inside the house
can/will condensate. Foresee adequate insulation for these pipes.
5.3 Connecting water piping
5.3.1 To connect the water piping
NOTICE
Do NOT use excessive force when connecting the field
piping and make sure the piping is aligned properly.
Deformation of the piping can cause malfunctioning of the
unit.
1Install the shut off-valve with integrated filter (delivered as
accessory) at the space heating/cooling water inlet.

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2Connect the space heating/cooling IN pipe to the shut-off valve
and the space heating/cooling OUT pipe to the unit.
3Connect the domestic hot water IN and OUT pipes to the indoor
unit. It is obligatory to use the accessory G3 kit EKUHWG3D(S)
to comply with UK legislation. See "5.3.2To connect the water
piping for domestic hot water"[413].
abcd
b
aSpace heating/cooling water OUT (Ø22mm)
bSpace heating/cooling water IN (Ø22mm) and shut-off
valve with integrated filter (accessory)
cDomestic hot water: hot water OUT (Ø22mm)
dDomestic hot water: cold water IN (Ø22mm)
NOTICE
It is strongly recommended to install an additional filter on
the heating water circuit. Especially to remove metallic
particles from foul heating piping, it is recommended to use
a magnetic or cyclone filter, which can remove small
particles. Small particles may damage the unit and will
NOT be removed by the standard filter of the heat pump
system.
NOTICE
About the shut-off valve with integrated filter (delivered as
accessory):
▪ The installation of the valve at the water inlet is
mandatory.
▪ Mind the flow direction of the valve.
NOTICE
Expansion vessel. An expansion vessel (field supply)
MUST be installed on the entering piping before the water
pump within 10m of the unit.
NOTICE
A pressure relief valve (field supply) with an opening
pressure of maximum 10 bar (=1 MPa) must be installed
on the domestic cold water inlet connection in accordance
with the applicable legislation.
NOTICE
▪ A drain device and pressure relief device must be
installed on the cold water inlet connection of the
domestic hot water cylinder.
▪ To avoid back siphonage, it is recommended to install a
non-return valve on the water inlet of the domestic hot
water tank in accordance with the applicable legislation.
Make sure it is NOT between the pressure relief valve
and the DHW tank.
▪ It is recommended to install a pressure reducing valve
on the cold water inlet in accordance with the
applicable legislation.
▪ It is recommended to install an expansion vessel on the
cold water inlet in accordance with the applicable
legislation.
▪ It is recommended to install the pressure relief valve on
a higher position than the top of the domestic hot water
tank. Heating of the domestic hot water tank causes
water to expand and without pressure relief valve the
water pressure inside the tank can rise above the tank
design pressure. Also the field installation (piping,
tapping points, etc.) connected to the tank is subjected
to this high pressure. To prevent this, a pressure relief
valve needs to be installed. The overpressure
prevention depends on the correct operation of the field
installed pressure relief valve. If this is NOT working
correctly, overpressure will deform the tank and water
leakage may occur. To confirm good operation, regular
maintenance is required.
NOTICE
▪ It is recommended to install shut-off valves to cold
water IN and hot water OUT connections. Shut-off
valves are field supplied.
▪However, make sure there is no valve between the
pressure relief valve (field supply) and the DHW
tank.
NOTICE
Install air purge valves at all local high points.

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5.3.2 To connect the water piping for domestic
hot water
a
e
e
b
d
c
aPressure reducing valve/pressure relief valve
combination. Water inlet and water outlet 22mm
connection, discharge piping connection 15mm
bAdaptor 22mm×3/4" Female BSP
cT-piece 22mm×22mm×22mm
dExpansion vessel of 18l or 8l – 3/4" Male BSP
eTundish 15mm inlet, 22mm outlet
1Pre-assemble the adaptor and expansion vessel so that the
expansion vessel is ready for installation.
2Mount the expansion vessel to the wall.
1 2
3Fit the T-piece (part of the kit) to the domestic hot water cold
water IN pipe of the unit.
4Connect the pressure reducing valve/pressure relief valve
combination (part of the kit) to the T-piece with a length of
copper tube Ø22mm (field supply).
5Connect the expansion vessel to the T-piece with a length of
copper tube Ø22mm (field supply).
6Connect the pressure reducing valve/pressure relief valve
combination to the water mains inlet.
7Install the tundish (part of the kit) in a vertical position within a
maximum of 600 mm away from the pressure reducing valve/
pressure relief valve combination.
WARNING
Install the tundish away from any electrical device.
Possible consequence: Electrical shock or fire.
NOTICE
To ensure a free water flow through the discharge pipe,
manually operate the pressure relief valve by turning its
knob left.
8Connect the 2 tundishes (1 from the pressure relief valve of the
domestic hot water tank, and 1 from the pressure relief valve of
the domestic hot water tank kit) to an appropriate drain
according to the applicable legislation. The following example
shows discharge below fixed grating (Building Regulation G3
section 3.61 gives alternative points of discharge):
≤600 mm
≥300 mm
a
D1
D2
c
b
d
aSafety device (pressure and temperature relief valve of
domestic hot water tank; pressure relief valve of domestic
hot water tank kit)
bTundish
cFixed grating
dTrapped gully
D1 Metal discharge pipe from safety device to tundish
D2 Discharge pipe from tundish, with continuous fall. See
Building Regulation G3 section 3.56, Table 03 and
worked example.

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9After completing the installation, the installer has to fill out the
warning label on the tank with indelible ink. The warning label
can be found on the unit top plate.
WARNING
The discharge pipes from the pressure relief valves MUST
terminate in a safe and visible position without forming any
risk to persons in the vicinity.
WARNING
▪ Discharge piping, tundish, drain valves, etc. MUST be
positioned away from any electrical components.
▪ The discharge pipe away from the tundish MUST
terminate in a safe, visible position without forming any
risk to persons in the vicinity.
WARNING
▪ Do NOT install any valves between the domestic hot
water tank and relief valves/expansion vessel.
▪ Do NOT install shut-off valves between the expansion
relief valve and the domestic hot water tank.
NOTICE
▪ All pipework and fittings must be flushed free of flux
and debris prior to installing the domestic hot water
tank kit. Failure to do this may cause irreparable
damage to the tank kit controls. Flush the system by
opening the hot water tap.
▪ The tundish pipework must be a 22mm metal pipe with
a minimal vertical length of 300mm below the tundish
before any elbows or bends in the pipework. All
pipework must have a continuous fall of 1 in 200
thereafter. Maximum permitted (equivalent) length of
22 mm pipework is 9 m. Each bend or elbow is
equivalent to 0.8m of pipework.
5.3.3 To connect the recirculation piping
Prerequisite: Only required if you need recirculation in your system.
1Remove the top panel from the unit, see "4.2.1 To open the
indoor unit"[46].
2Cut out the rubber grommet on top of the unit, and remove the
stop. The recirculation connector is located below the space
heating/cooling water outlet pipe.
3Route the recirculation piping through the grommet and connect
it to the recirculation connector.
4Reattach the top panel.
5.3.4 To fill the space heating circuit
To fill the space heating circuit, use a field supply filling kit. Make
sure you comply with the applicable legislation.
NOTICE
▪ Air in the water circuit can cause malfunctioning of the
backup heater. During filling, it may not be possible to
remove all the air from the circuit. Remaining air will be
removed through the automatic air purge valves during
the initial operating hours of the system. Additional
filling with water afterwards may be required.
▪ To purge the system, use the special function as
described in the chapter "8 Commissioning" [4 38].
This function should be used to purge the heat
exchanger coil of the domestic hot water tank.
5.3.5 To fill the domestic hot water tank
1Open every hot water tap in turn to purge air from the system
pipe work.
2Open the cold water supply valve.
3Close all water taps after all air is purged.
4Check for water leaks.
5Manually operate the field-installed pressure relief valve to
ensure a free water flow through the discharge pipe.
5.3.6 To check for water leaks
Before insulating the water piping, it is important to detect water
leaks, in particular small leaks. Small leaks can easily be overseen,
but can cause damage to the unit and surroundings over a longer
period of time.
NOTICE
After water piping installation, check all connections for
leaks.
5.3.7 To insulate the water piping
The piping in the complete water circuit MUST be insulated to
prevent reduction of the heating capacity.
Consider that the space heating piping can condensate during
cooling operation. Foresee adequate insulation for these pipes.

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6 Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
If the supply cord is damaged, it MUST be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
CAUTION
Do NOT push or place redundant cable length into the unit.
NOTICE
The distance between the high voltage and low voltage
cables should be at least 50mm.
6.1 About electrical compliance
For the models EWSAH/X06(U)D▲9W▼, the following statement…
Equipment complying with EN/IEC 61000‑3‑12 (European/
International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage
systems with input current >16A and ≤75A per phase.).
…is valid in the following cases:
# Power supply(a) Operation(b)
1 Combined power supply
(1N~, 50Hz, 230VAC)
C1
1N~, 50 Hz,
230 V AC
Normal or emergency
2 Split power supply
(2×(1N~, 50Hz, 230VAC))
C1
C5
1N~, 50 Hz,
230 V AC
1N~, 50 Hz,
230 V AC
Emergency
(a) For details of C1 and C5, see "6.4To connect the main power
supply"[416].
(b) Normal operation: backup heater = maximum 3kW
Emergency operation: backup heater = maximum 6kW
6.2 Safety device requirements
Power supply
The power supply must be protected with the required safety
devices, i.e. a main switch, a slow blow fuse on each phase and an
earth leakage protector in accordance with the applicable legislation.
Selection and sizing of the wiring should be done in accordance with
the applicable legislation based on the information mentioned in the
table below.
Make sure that a separate power supply circuit is provided for this
unit and that all electrical work is carried out by qualified personnel
according to local laws and regulations and this manual. An
insufficient power supply capacity or improper electrical construction
may lead to electric shocks or fire.
For EWSAH/X06(U)D▲9W▼:
Power supply Minimum circuit
ampacity
Recommended
fuses
1N~ 50Hz
230V
29A 32A
3N~ 50Hz
380-415V
15.5A 16A
6.3 Overview of electrical connections
for external and internal actuators
Item Description
Power supply See "6.4To connect the main power
supply"[416].
Remote outdoor
sensor
See "6.5To connect the remote outdoor
sensor"[419].
Shut-off valve See "6.6To connect the shut-off
valve"[419].
Electricity meter See "6.7To connect the electricity
meters"[420].
Domestic hot water
pump
See "6.8To connect the domestic hot water
pump"[420].
Alarm output See "6.9To connect the alarm
output"[421].
Space cooling/heating
operation control
See "6.10To connect the space cooling/
heating ON/OFF output"[421].
Changeover to
external heat source
control
See "6.11To connect the changeover to
external heat source"[422].
Power consumption
digital inputs
See "6.12To connect the power
consumption digital inputs"[423].
Safety thermostat See "6.13To connect the safety thermostat
(normally closed contact)"[423].
Low pressure switch
on central water loop
See "6.14To connect the brine low
pressure switch"[424].
Thermostat for passive
cooling
See "6.15To connect the thermostat for
passive cooling"[424].
LAN adapter
connections
See "6.16LAN adapter"[425].

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Item Description
Room thermostat
(wired or wireless)
See:
▪ Installation manual of the room
thermostat (wired or wireless)
▪ Addendum book for optional
equipment
Wires for wired room thermostat: (3
for cooling/heating operation; 2 for
heating only operation)×0.75mm²
Wires for wireless room thermostat: (5
for cooling/heating operation; 4 for
heating only operation)×0.75mm²
Maximum running current: 100mA
For the main zone:
▪ [2.9] Control
▪ [2.A] Ext thermostat type
For the additional zone:
▪ [3.A] Ext thermostat type
▪ [3.9] (read-only) Control
Heat pump convector See:
▪ Installation manual of the heat
pump convectors
▪ Addendum book for optional
equipment
Wires: 4×0.75mm²
Maximum running current: 100mA
For the main zone:
▪ [2.9] Control
▪ [2.A] Ext thermostat type
For the additional zone:
▪ [3.A] Ext thermostat type
▪ [3.9] (read-only) Control
Remote indoor sensor See:
▪ Installation manual of the remote
indoor sensor
▪ Addendum book for optional
equipment
Wires: 2×0.75mm²
[9.B.1]=2 (External sensor = Room)
[1.7] Room sensor offset
Current sensors See the installation manual of the
current sensors.
Wires: 3×2. Use part of the cable
(40m) delivered as accessory.
[9.9.1]=3 (Power consumption
control = Current sensor)
[9.9.E] Current sensor offset
Item Description
Human Comfort
Interface
See:
▪ Installation and operation manual of
the Human Comfort Interface
▪ Addendum book for optional
equipment
Wires: 2×(0.75~1.25mm²)
Maximum length: 500m
[2.9] Control
[1.6] Room sensor offset
6.4 To connect the main power supply
Use one of the following layouts to connect the power supply (for
details of C1~C5, see below the table):
# Layout Open the unit(a)
1 Single cable power supply (=combined
power supply)
C1
C1: Power supply for the backup heater,
and the rest of the unit (1N~ or 3N~)
Not necessary
(connection to
factory-mounted
cable outside of the
unit)
2 Dual cable power supply (=split power
supply)
Note: This is for example needed for
installations in Germany.
C1
C5
C1: Power supply for the backup heater
(1N~ or 3N~)
C5: Power supply for the rest of the unit
(1N~)
43
2
1

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# Layout Open the unit(a)
3 Single cable power supply (=combined
power supply)
+
Preferential kWh rate power supply
without separate normal kWh rate power
supply(b)
C1
C2
X5M
C1: Preferential kWh rate power supply
(1N~ or 3N~)
C2: Preferential kWh rate power supply
contact
1
3
2
4 Dual cable power supply (=split power
supply)
+
Preferential kWh rate power supply
without separate normal kWh rate power
supply(b)
C1
C5 C2
X5M
C1: Preferential kWh rate power supply
for the backup heater (1N~ or 3N~)
C2: Preferential kWh rate power supply
contact
C5: Preferential kWh rate power supply
for the rest of the unit (1N~)
3
2
1
5
4
5 Single cable power supply (=combined
power supply)
+
Preferential kWh rate power supply with
separate normal kWh rate power supply(b)
NOT ALLOWED
—
# Layout Open the unit(a)
6 Dual cable power supply (=split power
supply)
+
Preferential kWh rate power supply with
separate normal kWh rate power supply(b)
C1
C2C3
X5M
Z1F
X2M
C5
C1: Normal kWh rate power supply for the
backup heater (1N~ or 3N~)
C2: Preferential kWh rate power supply
contact
C3: Separate normal kWh rate power
supply for the hydro (1N~)
C4: Connection of X11Y
C5: Preferential kWh rate power supply
for the compressor (1N~)
c
b
a
e
f
d
(a) See "4.2.1To open the indoor unit"[46].
(b) Types of preferential kWh rate power supply:
INFORMATION
Some types of preferential kWh rate power supply require
a separate normal kWh rate power supply to the indoor
unit. This is required in the following cases:
▪ if the preferential kWh rate power supply is interrupted
when active, OR
▪ if no power consumption of the indoor unit is allowed at
the preferential kWh rate power supply when active.
Detail C1: Factory-mounted power supply cable
Wires: 3N+GND, OR 1N+GND
Maximum running current: Refer to name plate on unit.
Connect the factory-mounted power supply cable to a 1N~ or 3N~
power supply.

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a
b
Q1DI
L1 L2 L3 N
3N~, 50 Hz, 400 V AC
F1B
1 3 5 7
2 4 6 8
IIII
Q1DI
L N
1N~, 50 Hz, 230 V AC
F1B
1 3 5 7
2468
IIII
1N~ 3N~
OR
BRN
BLK
GRY
BLU
YLW/GRN
BRN
BLK
GRY
BLU
YLW/GRN
aFactory-mounted power supply cable
bField wiring
F1B Overcurrent fuse (field supply). Recommended fuse for
1N~: 4‑pole, 32A fuse, C curve. Recommended fuse for
3N~: 4‑pole, 16A fuse, C curve.
Q1DI Earth leakage circuit breaker (field supply)
Detail C2: Preferential kWh rate power supply contact
Wires: 2×(0.75~1.25mm²)
Maximum length: 50m.
Preferential kWh rate power supply contact: 16VDC
detection (voltage supplied by PCB). The voltage-free contact
shall ensure the minimum applicable load of 15VDC, 10mA.
Connect the preferential kWh rate power supply contact (S1S) as
follows.
2×
1×
X5M
1×
910
S1S
INFORMATION
The preferential kWh rate power supply contact is
connected to the same terminals (X5M/9+10) as the safety
thermostat. Thus, the system can have EITHER
preferential kWh rate power supply OR a safety
thermostat.
Detail C3: Separate normal kWh rate power supply
Wires: 1N+GND
Maximum running current: 6.3A
Connect the separate normal kWh rate power supply as follows:
Q3DI
L N
1N~, 50 Hz, 230 V AC
1×
2×
X2M
1×
56
L N
Detail C4: Connection of X11Y
Factory-mounted cables.
Disconnect X11Y from X11YA, and connect it to X11YB.
Z1F
X11YA
X11YB
X2M/5+6
X11Y

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Detail C5: Option kit EKGSPOWCAB
Install the option kit EKGSPOWCAB (=power cable for split
power supply). For installation instructions, see the installation
manual of the option kit.
Q2DI
L N
1N~, 50 Hz, 230 V AC
F2B
1 3
2 4
II
BRN BLU YLW/GRN
Z15C
N=1
2
3
X22YB
1
X22Y
Z2F/1
Z2F/2
Z2F/3
EKGSPOWCAB
F2B Overcurrent fuse (field supply). Recommended fuse:
2‑pole, 16A fuse, C curve.
Q2DI Earth leakage circuit breaker (field supply)
Configuration power supply
[9.3] Backup heater
[9.8] Benefit kWh power supply
6.5 To connect the remote outdoor
sensor
The remote outdoor sensor (delivered as accessory) measures the
outdoor ambient temperature.
INFORMATION
If the desired leaving water temperature is weather
dependent, the full time outdoor temperature measurement
is important.
Remote outdoor sensor + cable (40m) delivered as accessory
[9.B.2] Ext. amb. sensor offset (=overview field setting
[2‑0B])
[9.B.3] Averaging time (=overview field setting [1‑0A])
1Connect the external temperature sensor cable to the indoor
unit.
a c db
aFactory-mounted cable
bSplicing connectors (field supply)
cRemote outdoor sensor cable (40m)(delivered as
accessory)
dRemote outdoor sensor (delivered as accessory)
2Fix the cable with cable ties to the cable tie mountings.
3Install the remote outdoor sensor outside as described in the
installation manual of the sensor (delivered as accessory).
6.5.1 To change settings if remote outdoor
sensor cannot be installed correctly
NOTICE
It is recommended to ALWAYS install and connect the
ambient sensor. If this is not possible and you do NOT
connect the sensor to the unit, the display of the unit will
return error H9‑00.
If you cannot install the remote sensor outdoors, perform the
following steps.
1Install the ambient sensor in the technical room.
2Change the setpoint mode from Weather dependent to Fixed.
For more information, see "7.3.4 Using weather-dependent
curves"[434].
3In addition, adjust the following settings.
# Code Description
[4.3.1] [4–02] Space heating off temperature
(space heating operation range)
[4.3.2] [F–01] Space cooling off temperature
(space cooling operation range)
[9.3.6] [5–00] Equilibrium (backup heater operation)
[9.3.7] [5–01] Equilibrium temperature (backup
heater operation)
[1.4.1] [2–06] Antifrost Activation
[9.C.3] [C–03] Temperature (bivalent operation)
[9.6.2] [5–03] Priority temperature (balancing
between space heating and domestic hot
water)
6.6 To connect the shut-off valve
INFORMATION
Shut-off valve usage example. In case of one LWT zone,
and a combination of underfloor heating and heat pump
convectors, install a shut-off valve before the underfloor
heating to prevent condensation on the floor during cooling
operation.
Wires: 2×0.75mm²
Maximum running current: 100mA
230VAC supplied by PCB
[2.D] Shut off valve
1Open the following (see "4.2.1To open the indoor unit"[46]):
1Top panel
1
3
2
2User interface panel
3Installer switch box cover
2Connect the valve control cable to the appropriate terminals as
shown in the illustration below.
NOTICE
Wiring is different for a NC (normally closed) valve and a
NO (normally open) valve.

6 Electrical installation
Installation manual
20
EWSAH/X06UD
Daikin Altherma 3 WS
4P675760-1C – 2023.02
M2S
1×
2×
NO NC
OR
X2M
1×
2128
X2M
1×
21 29
3Fix the cable with cable ties to the cable tie mountings.
6.7 To connect the electricity meters
Wires: 2 (per meter)×0.75mm²
Electricity meters: 12VDC pulse detection (voltage supplied
by PCB)
[9.A] Energy metering
INFORMATION
In case of an electricity meter with transistor output, check
the polarity. The positive polarity MUST be connected to
X5M/6 and X5M/4; the negative polarity to X5M/5 and
X5M/3.
1Open the following (see "4.2.1To open the indoor unit"[46]):
1Top panel
1
3
2
2User interface panel
3Installer switch box cover
2Connect the electricity meters cable to the appropriate terminals
as shown in the illustration below.
S3S S2S
3456
2×
1×
X5M
1×
56
34
3Fix the cable with cable ties to the cable tie mountings.
6.8 To connect the domestic hot water
pump
Wires: (2+GND)×0.75mm²
DHW pump output. Maximum load: 2A (inrush), 230VAC,
1A (continuous)
[9.2.2] DHW pump
[9.2.3] DHW pump schedule
1Open the following (see "4.2.1To open the indoor unit"[46]):
1Top panel
1
3
2
2User interface panel
3Installer switch box cover
2Connect the domestic hot water pump cable to the appropriate
terminals as shown in the illustration below.