Daikin ELSH12P30E User manual

Installation manual
Daikin Altherma 3 R MT ECH₂OEnglish
Installation manual
Daikin Altherma 3 R MT ECH₂O
ELSH12P30E▲▼
ELSH12P50E▲▼
ELSHB12P30E▲▼
ELSHB12P50E▲▼
ELSX12P30E▲▼
ELSX12P50E▲▼
ELSXB12P30E▲▼
ELSXB12P50E▲▼
▲= 1, 2, 3, …, 9, A, B, C, …, Z
▼= , , 1, 2, 3, …, 9
https://daikintechnicaldatahub.eu

Table of contents
Installation manual
2
ELSH/X(B)12P30+50E
Daikin Altherma 3 R MT ECH₂O
4P708484-1 – 2023.03
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
4 Unit installation 5
4.1 Preparing the installation site .................................................... 5
4.1.1 Installation site requirements of the indoor unit .......... 5
4.1.2 Special requirements for R32 units............................. 6
4.1.3 Installation patterns..................................................... 7
4.2 Opening and closing the unit..................................................... 13
4.2.1 To open the indoor unit............................................... 13
4.2.2 To lower the switch box of the indoor unit and
remove the top cover .................................................. 14
4.2.3 To close the indoor unit............................................... 15
4.3 Mounting the indoor unit............................................................ 15
4.3.1 To install the indoor unit.............................................. 15
4.3.2 To connect the drain hose to the drain ....................... 15
5 Piping installation 15
5.1 Preparing refrigerant piping....................................................... 15
5.1.1 Refrigerant piping requirements.................................. 15
5.1.2 Refrigerant piping insulation ....................................... 16
5.2 Connecting refrigerant piping .................................................... 16
5.2.1 To connect the refrigerant piping to the indoor unit .... 16
5.3 Preparing water piping .............................................................. 16
5.3.1 To check the water volume and flow rate ................... 16
5.4 Connecting water piping............................................................ 17
5.4.1 To connect the water piping........................................ 17
5.4.2 To connect a pressure vessel..................................... 18
5.4.3 To fill the heating system ............................................ 19
5.4.4 To fill the heat exchanger inside the storage tank ...... 19
5.4.5 To fill the storage tank................................................. 19
5.4.6 To insulate the water piping........................................ 20
6 Electrical installation 20
6.1 About electrical compliance....................................................... 20
6.2 Guidelines when connecting the electrical wiring...................... 20
6.3 Connections to the indoor unit................................................... 20
6.3.1 To connect the electrical wiring to the indoor unit....... 22
6.3.2 To connect the main power supply ............................. 23
6.3.3 To connect the backup heater power supply .............. 24
6.3.4 To connect the backup heater to the main unit........... 25
6.3.5 To connect the shut-off valve...................................... 26
6.3.6 To connect the electricity meters ................................ 26
6.3.7 To connect the domestic hot water pump................... 27
6.3.8 To connect the alarm output ....................................... 27
6.3.9 To connect the space cooling/heating ON/OFF
output .......................................................................... 28
6.3.10 To connect the changeover to external heat source... 28
6.3.11 To connect the power consumption digital inputs ....... 29
6.3.12 To connect the safety thermostat (normally closed
contact) ....................................................................... 29
6.3.13 To connect a Smart Grid............................................. 30
6.3.14 To connect the WLAN cartridge (delivered as
accessory)................................................................... 32
6.3.15 To connect the solar input........................................... 32
6.3.16 To connect the DHW output........................................ 33
7 Configuration 33
7.1 Overview: Configuration ............................................................ 33
7.1.1 To access the most used commands ......................... 34
7.2 Configuration wizard.................................................................. 35
7.2.1 Configuration wizard: Language .................................. 35
7.2.2 Configuration wizard: Time and date ........................... 35
7.2.3 Configuration wizard: System ...................................... 35
7.2.4 Configuration wizard: Backup heater ........................... 36
7.2.5 Configuration wizard: Main zone.................................. 37
7.2.6 Configuration wizard: Additional zone.......................... 38
7.2.7 Configuration wizard: Tank .......................................... 38
7.3 Weather-dependent curve.......................................................... 38
7.3.1 What is a weather-dependent curve? .......................... 38
7.3.2 2-points curve .............................................................. 39
7.3.3 Slope-offset curve ........................................................ 39
7.3.4 Using weather-dependent curves ................................ 39
7.4 Settings menu ............................................................................ 40
7.4.1 Main zone .................................................................... 40
7.4.2 Additional zone ............................................................ 40
7.4.3 Information ................................................................... 41
7.5 Menu structure: Overview installer settings................................ 42
8 Commissioning 43
8.1 Checklist before commissioning................................................. 43
8.2 Checklist during commissioning ................................................. 43
8.2.1 To check the minimum flow rate .................................. 44
8.2.2 To perform an air purge ............................................... 44
8.2.3 To perform an operation test run ................................. 44
8.2.4 To perform an actuator test run ................................... 44
8.2.5 To perform an underfloor heating screed dryout.......... 45
8.2.6 To set up bivalent heat sources ................................... 45
9 Hand-over to the user 45
10 Technical data 46
10.1 Piping diagram: Indoor unit ........................................................ 46
10.2 Wiring diagram: Indoor unit ........................................................ 47
1 About the documentation
1.1 About this document
Target audience
Authorised installers
Documentation set
This document is part of a documentation set. The complete set
consists of:
▪General safety precautions:
▪ Safety instructions that you must read before installing
▪ Format: Paper (in the box of the indoor unit)
▪Operation manual:
▪ Quick guide for basic usage
▪ Format: Paper (in the box of the indoor unit)
▪User reference guide:
▪ Detailed step-by-step instructions and background information
for basic and advanced usage
▪ Format: Digital files on https://www.daikin.eu. Use the search
function to find your model.
▪Installation manual – Outdoor unit:
▪ Installation instructions
▪ Format: Paper (in the box of the outdoor unit)
▪Installation manual – Indoor unit:
▪ Installation instructions
▪ Format: Paper (in the box of the indoor unit)

2 Specific installer safety instructions
Installation manual
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ELSH/X(B)12P30+50E
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4P708484-1 – 2023.03
▪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 indoor 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:
▪Daikin Technical Data Hub
▪ Central hub for technical specifications of the unit, useful tools,
digital resources, and more.
▪ Publicly accessible via https://daikintechnicaldatahub.eu.
▪Heating Solutions Navigator
▪ Digital toolbox that offers a variety of tools to facilitate the
installation and configuration of heating systems.
▪ To access Heating Solutions Navigator, registration to the
Stand By Me platform is required. For more information, see
https://professional.standbyme.daikin.eu.
▪Daikin e-Care
▪ Mobile app for installers and service technicians that allows you
to register, configure and troubleshoot heating systems.
▪ The mobile app can be downloaded for iOS and Android
devices using the QR codes below. Registration to the Stand
By Me platform is required to access the app.
App Store Google Play
2 Specific installer safety
instructions
Always observe the following safety instructions and regulations.
Unit installation (see "4Unit installation"[45])
WARNING
Installation shall be done by an installer, the choice of
materials and installation shall comply with the applicable
legislation. In Europe, EN378 is the applicable standard.
Installation site (see "4.1Preparing the installation site"[45])
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.
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5].
CAUTION
Install the indoor unit at a minimum distance of 1 m from
other heat sources (>80°C) (e.g. electrical heater, oil
heater, chimney) and combustible materials. Otherwise the
unit may be damaged or in extreme cases catch fire.
Special requirements for R32 (see "4.1.2Special requirements
for R32 units"[46])
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ 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.
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13])
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
Mounting the indoor unit (see "4.3Mounting the indoor
unit"[415])
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15].

3 About the box
Installation manual
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Daikin Altherma 3 R MT ECH₂O
4P708484-1 – 2023.03
Piping installation (see "5Piping installation"[415])
DANGER: RISK OF ELECTROCUTION
During the filling process, water can escape from any
leaking point and can cause an electrical shock if it comes
into contact with live parts.
▪ Before the filling process, de-energise the unit.
▪ After the first filling and before switching on the unit
with the mains switch, check whether all electric parts
and connection points are dry.
WARNING
The field piping method MUST be in accordance with the
instructions from this manual. See "5 Piping
installation"[415].
WARNING
Install the tundish away from any electrical device.
Possible consequence: Electrical shock or fire.
Electrical installation (see "6Electrical installation"[420])
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF ELECTROCUTION
During the filling process, water can escape from any
leaking point and can cause an electrical shock if it comes
into contact with live parts.
▪ Before the filling process, de-energise the unit.
▪ After the first filling and before switching on the unit
with the mains switch, check whether all electric parts
and connection points are dry.
WARNING
Electrical wiring connection method MUST be in
accordance with the instructions from:
▪ This manual. See "6Electrical installation"[420].
▪ The wiring diagram, which is delivered with the unit,
located on the inside of the indoor unit switch box
cover. For a translation of its legend, see "10.2Wiring
diagram: Indoor unit"[447].
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
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.
WARNING
ALWAYS use multicore cable for power supply cables.
CAUTION
Do NOT push or place redundant cable length into the unit.
WARNING
The backup heater MUST have a dedicated power supply
and MUST be protected by the safety devices required by
the applicable legislation.
CAUTION
To guarantee the unit is completely earthed, ALWAYS
connect the backup heater power supply and the earth
cable.
INFORMATION
Details of type and rating of fuses, or rating of circuit
breakers are described in "6Electrical installation"[420].
Configuration (see "7Configuration"[433])
WARNING
Be aware that the domestic hot water temperature at the
hot water tap will be equal to the value selected in field
setting [2-03] after a disinfection operation.
When the high domestic hot water temperature can be a
potential risk for human injuries, a mixing valve (field
supply) shall be installed at the domestic hot water out
connection of the storage tank. This mixing valve shall
secure that the hot water temperature at the hot water tap
never rise above a set maximum value. This maximum
allowable hot water temperature shall be selected
according to the applicable legislation.
CAUTION
The disinfection function settings MUST be configured by
the installer according to the applicable legislation.
CAUTION
Make sure that the disinfection function start time [5.7.3]
with defined duration [5.7.5] is NOT interrupted by possible
domestic hot water demand.
Commissioning (see "8Commissioning"[443])
WARNING
Commissioning method MUST be in accordance with the
instructions from this manual. See
"8Commissioning"[443].
WARNING
Air purging heat emitters or collectors. Before you
purge air from heat emitters or collectors, check if or
is displayed on the home screen of the user interface.
▪ If not, you can purge air immediately.
▪ If yes, make sure that the room where you want to
purge air is sufficiently ventilated. Reason: Refrigerant
might leak into the water circuit, and subsequently into
the room when you purge air from the heat emitters or
collectors.
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.

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4P708484-1 – 2023.03
3.1 Indoor unit
3.1.1 To remove the accessories from the
indoor unit
aHandle (only required for transport)
bThread cover
cSpillover connector
dAssembly wrench
eShut-off valve
fFlat gasket
gO‑ring
hSecuring clip
iVenting hose
jDrain pan hose
kDrain pan hose clamp
lCable fixation for strain relief
mCable tie
nO‑ring
oChimney socket
pSecuring clip
qSwitch box metal insert
rScrew for switch box metal insert
sWLAN cartridge
tGeneral safety precautions
uDeclaration of conformity
vIndoor unit installation manual
wOperation manual
xAddendum software changelog
yAddendum commercial warranty
3.1.2 To handle the indoor unit
Use the handles at the back and at the front to carry the unit.
NOTICE
The indoor unit is top-heavy as long as the storage tank is
empty. Secure the unit accordingly and only transport by
using the handles.
If optional Backup Heater (EKECBU*) is installed, see the
installation manual of the Backup Heater.
c
b
360°
a
1
2
aScrew plug
bAssembly wrench
cHandle
1Open the screw plugs on the front and back of the tank.
2Attach the handles horizontally and turn by 360°.
3Use the handles to carry the unit.
4After carrying the unit remove the handles, add the screw plugs
again and insert the thread covers on the plugs.
4 Unit installation
WARNING
Installation shall be done by an installer, the choice of
materials and installation shall comply with the applicable
legislation. In Europe, EN378 is the applicable standard.
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).
WARNING
DO NOT reuse refrigerant piping that has been used with
any other refrigerant. Replace the refrigerant pipes or
clean thoroughly.
4.1.1 Installation site requirements of the
indoor unit
▪ The indoor unit is designed for indoor installation only and for the
following ambient temperatures:
▪ Space heating operation: 5~30°C
▪ Space cooling operation: 5~35°C
▪ Domestic hot water production: 5~35°C. If EKECBUAF6V is
installed, ambient temperature is limited to 5~32°C.
INFORMATION
Cooling is only applicable in case of reversible models.
▪ Mind the following measurements guidelines:
Maximum refrigerant piping length(a) between indoor
unit and outdoor unit
50m
Minimum refrigerant piping length(a) between indoor
unit and outdoor unit
3m
Maximum height difference between indoor unit and
outdoor unit
30m
(a) Refrigerant piping length is the one-way length of liquid piping.
▪ Mind the following spacing installation guidelines:

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Daikin Altherma 3 R MT ECH₂O
4P708484-1 – 2023.03
CAUTION
Install the indoor unit at a minimum distance of 1 m from
other heat sources (>80°C) (e.g. electrical heater, oil
heater, chimney) and combustible materials. Otherwise the
unit may be damaged or in extreme cases catch fire.
≥500
001≥
≥100
084≥
[ ]mm
a b
a≥100 a+b ≥600
b≥300
INFORMATION
Serviceability may be impacted, if the indicated clearances
cannot be maintained.
INFORMATION
If you have limited installation space, do the following
before installing the unit in its final position: "4.3.2 To
connect the drain hose to the drain"[415].
4.1.2 Special requirements for R32 units
Additionally to the spacing guidelines: Because the total refrigerant
charge in the system is ≥1.84 kg, the room where you install the
indoor unit must also comply with the conditions described in
"4.1.3Installation patterns"[47].
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ 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 and copper gaskets which have
been used already.
▪ Joints made in installation between parts of refrigerant
system shall be accessible for maintenance purposes.
WARNING
Make sure installation, servicing, maintenance and repair
comply with instructions from Daikin and with applicable
legislation and are executed ONLY by authorised persons.
NOTICE
▪ Protect pipework from physical damage.
▪ Keep the pipework installation to a minimum.

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4P708484-1 – 2023.03
4.1.3 Installation patterns
Depending on the type of room in which you install the indoor unit, different installation patterns are allowed:
Room type Allowed patterns
Living room, kitchen, garage, attic, basement, storage room 1, 2, 3
Technical room (i.e. room that is NEVER occupied by persons) 1, 2, 3, 4
PATTERN 1 PATTERN 2 PATTERN 3 PATTERN 4
a
b
Hrelease
Hrelease
1a
b
A
1b
Hrelease
Hrelease
2a
bc2
c1
AB
2b
A
b
3a
c2
c1
A
Ventilation openings N/A Between room A and B N/A Between room A and
outside
Minimum floor area Room A Room A + Room B N/A N/A
Chimney Might be needed Might be needed Connected to outside N/A
Release in case of
refrigerant leakage
Inside room A Inside room A Outside Inside room A
Restrictions See "PATTERN 1"[49], "PATTERN 2"[49], "PATTERN 3"[411], and
"Tables for PATTERN 1, 2 and 3"[411]
See "PATTERN 4"[413]
A
Room A (= room where indoor unit is installed)
B
Room B (= adjacent room)
aIf no chimney is installed, this is the default point of release
in case of refrigerant leakage.
If needed, you can connect a chimney here:
▪ Unit's connection point for the chimney = 1" male thread.
Use a compatible counterpart for the chimney.
▪ Make sure the connection is airtight.
bChimney
c1 Bottom opening for natural ventilation
c2 Top opening for natural ventilation
Hrelease Actual release height:
1a
2a
: Without chimney. From floor to top of the unit.
▪ For 300l units => Hrelease=1.89m
▪ For 500l units => Hrelease=1.90m
1b
2b
: With chimney. From floor to top of the chimney.
▪ For 300l units => Hrelease=1.89m + Chimney height
▪ For 500l units => Hrelease=1.90m + Chimney height
3a
Installation with chimney connected to the outside. The
release height is not relevant. There are no requirements to
the minimum floor area.
N/A Not applicable
Minimum floor area / Release height:
▪ The minimum floor area requirements depend on the release
height of the refrigerant in case of a leakage. The higher the
release height, the lower the minimum floor area requirements.
▪ The default point of release (without chimney) is at the top of the
unit. To decrease the minimum floor area requirements, you can
increase the release height by installing a chimney. If the chimney
leads outside of the building, there are no requirements anymore
to the minimum floor area.
▪ You can also take advantage of the floor area of the adjacent
room (= room B) by providing ventilation openings between the
two rooms.
▪ For installations in technical rooms (i.e. room that is NEVER
occupied by persons), additionally to patterns 1, 2 and 3, you can
also use PATTERN4. For this pattern there are no requirements
to the minimum floor area if you provide 2 openings (one at the
bottom, one at the top) between the room and the outside to
ensure natural ventilation. The room must be protected from frost.
When connecting a chimney
▪ Install the chimney socket (delivered as accessory) to the plate
heat exchanger box.

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4P708484-1 – 2023.03
1× 1× 1×1×
a b c d
d
b
a
c
aChimney socket
bSecuring clip
cO-ring
dFlat gasket
▪ Socket's connection point for the chimney = 1" male thread. Use a
compatible counterpart for the chimney.
▪ Make sure the connection is airtight.

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PATTERN 1
You can install the unit in room A. You do not need a chimney.
See table 2: Look up the minimum release height (H0) for the
given floor area (AroomA) and the given refrigerant charge.
No
Calculate ΔH0: difference between the minimum release height
required (H0) and the release height without chimney.
No
Yes
Yes
Go to PATTERN 2
H0, ΔH0
1a
A
You can install the unit in room A if you install a chimney.
Chimney height = ΔH0
1b
ΔH0
A
See table 3:
For ΔH0: Can the maximum
chimney length be respected, and is the
chimney practically feasible?
See table 1:
Is the floor area of room A
(AroomA) large enough for the given
refrigerant charge and the given release height
without chimney?
START PATTERN 1
PATTERN 2
A B
Anv(≥Anv-min)
Min. 50%
of Anv-min
PATTERN 2: Conditions ventilation openings
If you want to take advantage of the floor area of the adjacent room, you must provide 2 openings (one at the bottom, one at the top) between the rooms to
ensure natural ventilation. The openings must comply with the following conditions:
▪ Bottom opening (Anv):
▪ Must be a permanent opening that cannot be closed.
▪ Must be completely located between 0 and 300 mm from the floor.
▪ Must be ≥Anv-min (minimum bottom opening area).
▪ ≥50% of the required opening area Anv-min must be ≤200 mm from the floor.
▪ The bottom of the opening must be ≤100 mm from the floor.
▪ If the opening starts from the floor, the height of the opening must be ≥20 mm.
▪ Top opening:
▪ Must be a permanent opening that cannot be closed.
▪ Must be ≥50% of Anv-min (minimum bottom opening area).
▪ Must be ≥1.5 m from the floor.

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4P708484-1 – 2023.03
Calculate the total floor area.
(Atotal=AroomA+AroomB)See table 4: Look up the minimum bottom opening area for natural
ventilation with the adjacent room (Anv-min) for the given refrigerant charge,
the given floor area of room A (AroomA) [! NOT room A + room B !] and the
given release height (H1).
Calculate ΔH1: difference between the minimum release height
required (H1) and the release height without chimney.
See table 2: Look up the minimum release height (H1) for the
given floor area (Atotal)and the given refrigerant charge.
Is it practically feasible to
create ventilation openings that comply
with Anv-min and with the "Conditions ventilation
openings" on previous page)?
See table 3:
For ΔH1: Can the maximum
chimney length be respected, and is the
chimney practically feasible?
See table 2: Do you
need a chimney or not?
(i.e. does table 2 result in a value or "(*)"?)
Yes
No
No
Yes
Needed
(i.e. table 2 results in a value)
Not needed
(i.e. table 2 results in "(*)")
Go to PATTERN 3
H1, ΔH1 Anv, Anv-min
A B A B
ΔH1
You can install the unit in room A if you create ventilation
openings. You do not need a chimney.
Ventilation openings must comply with Anv-min and with
"Conditions ventilation openings" on previous page).
2a
You can install the unit in room A if you install a chimney, and
create ventilation openings.
Chimney height = ΔH1.
Ventilation openings must comply with Anv-min and with
"Conditions ventilation openings" on previous page).
2b
Anv(≥Anv-min)
Min. 50%
of Anv-min
Anv(≥Anv-min)
Min. 50%
of Anv-min
Start PATTERN 2

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PATTERN 3
No
Yes
START PATTERN 3
A
You can install the unit in room A if you lead the chimney outside
the building.
3a
You CANNOT install the unit in the room. Place the unit in a larger
room.
3b
See table 3:
Is it possible to lead a chimney
outside the building respecting the maximum
chimney length?
Tables for PATTERN 1, 2 and 3
Table 1: Minimum floor area
For intermediate refrigerant charges, use the row with the higher value. Example: If the refrigerant charge is 3.5kg, use the row of 3.65kg.
Minimum floor area (m²)
Charge (kg) Release height without chimney (m)
1.89m (Unit=300l) 1.90m (Unit=500l)
3.25kg 9.05m² 8.91m²
3.45kg 10.20m² 10.04m²
3.65kg 11.42m² 11.24m²
3.85kg 12.70m² 12.50m²
4.05kg 14.05m² 13.83m²
Table 2: Minimum release height
Take the following into account:
• For intermediate floor areas, use the column with the lower value. Example: If the floor area is 7.25m², use the column of 6.00m².
• For intermediate refrigerant charges, use the row with the higher value. Example: If the refrigerant charge is 3.5kg, use the row of 3.65kg.
• (*): The release height of the unit without chimney (for 300 l units: 1.89 m; for 500 l units: 1.90 m) is already higher than the minimum
required release height. => OK (no chimney needed).
Minimum release height (m)
Charge (kg) Floor area (m²)
4.00m² 6.00m² 8.00m² 10.00m² 12.00m² 14.00m² 16.00m²
3.25kg 3.53m 2.35m 2.01m (*) (*) (*) (*)
3.45kg 3.75m 2.50m 2.14m 1.91m (*) (*) (*)
3.65kg 3.96m 2.64m 2.26m 2.02m (*) (*) (*)
3.85kg 4.18m 2.79m 2.38m 2.13m 1.95m (*) (*)
4.05kg 4.40m 2.93m 2.51m 2.24m 2.05m 1.89m (*)

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Table 3: Maximum chimney length
When installing a chimney, the chimney length must be less than the maximum chimney length.
• Use the columns with the correct refrigerant charge. For intermediate refrigerant charges, use the columns with the higher value. Example: If
the refrigerant charge is 3.5kg, use the columns of 4.05kg.
• For intermediate diameters, use the column with the lower value. Example: If the diameter is 23mm, use the column of 22mm.
• X: Not allowed
Maximum chimney length (m) – In case of Refrigerant charge=3.25kg (and T=60°C) In case of Refrigerant charge=4.05kg (and T=60°C)
Chimney Inside diameter of chimney (mm) Inside diameter of chimney (mm)
20mm 22mm 24mm 26mm 28mm 20mm 22mm 24mm 26mm 28mm
Straight pipe 24.41m 42.18m 67.50m 102.40m 149.26m 13.28m 24.78m 41.27m 64.11m 94.87m
1× 90° elbow 22.61m 40.20m 65.34m 100.06m 146.74m 11.48m 22.80m 39.11m 61.77m 92.35m
2× 90° elbow 20.81m 38.22m 63.18m 97.72m 144.22m 9.68m 20.82m 36.95m 59.43m 89.83m
3× 90° elbow 19.01m 36.24m 61.02m 95.38m 141.70m 7.88m 18.84m 34.79m 57.09m 87.31m
Table 4: Minimum bottom opening area for natural ventilation
Take the following into account:
• Use the correct table. For intermediate refrigerant charges, use the table with the higher value. Example: If the refrigerant charge is 3.5kg,
use the table of 3.65kg.
• For intermediate floor areas, use the column with the lower value. Example: If the floor area is 7.25m², use the column of 6.00m².
• For intermediate release height values, use the row with the lower value. Example: If the release height is 1.95m, use the row of 1.90m.
• Anv: Bottom opening area for natural ventilation.
• Anv-min: Minimum bottom opening area for natural ventilation.
• (*): Already OK (no ventilation openings needed).
Anv-min (dm²) – In case of Refrigerant charge=3.25kg
Release height (m) Floor area of room A (m²) [! NOT room A + room B !]
4.00m² 6.00m² 8.00m² 10.00m² 12.00m² 14.00m² 16.00m²
1.89m 3.437dm² 1.453dm² 0.473dm² (*) (*) (*) (*)
1.90m 3.410dm² 1.421dm² 0.436dm² (*) (*) (*) (*)
2.00m 3.120dm² 1.079dm² 0.043dm² (*) (*) (*) (*)
2.20m 2.585dm² 0.445dm² (*) (*) (*) (*) (*)
2.40m 2.103dm² (*) (*) (*) (*) (*) (*)
2.60m 1.662dm² (*) (*) (*) (*) (*) (*)
2.80m 1.257dm² (*) (*) (*) (*) (*) (*)
3.00m 0.881dm² (*) (*) (*) (*) (*) (*)
Anv-min (dm²) – In case of Refrigerant charge=3.65kg
Release height (m) Floor area of room A (m²) [! NOT room A + room B !]
4.00m² 6.00m² 8.00m² 10.00m² 12.00m² 14.00m² 16.00m²
1.89m 4.349dm² 2.364dm² 1.446dm² 0.601dm² (*) (*) (*)
1.90m 4.319dm² 2.330dm² 1.407dm² 0.558dm² (*) (*) (*)
2.00m 4.006dm² 1.965dm² 0.989dm² 0.092dm² (*) (*) (*)
2.20m 3.430dm² 1.290dm² 0.214dm² (*) (*) (*) (*)
2.40m 2.912dm² 0.676dm² (*) (*) (*) (*) (*)
2.60m 2.440dm² 0.113dm² (*) (*) (*) (*) (*)
2.80m 2.006dm² (*) (*) (*) (*) (*) (*)
3.00m 1.605dm² (*) (*) (*) (*) (*) (*)
Anv-min (dm²) – In case of Refrigerant charge=4.05kg
Release height (m) Floor area of room A (m²) [! NOT room A + room B !]
4.00m² 6.00m² 8.00m² 10.00m² 12.00m² 14.00m² 16.00m²
1.89m 5.260dm² 3.276dm² 2.419dm² 1.630dm² 0.828dm² 0.022dm² (*)
1.90m 5.229dm² 3.240dm² 2.378dm² 1.585dm² 0.779dm² (*) (*)
2.00m 4.892dm² 2.852dm² 1.936dm² 1.093dm² 0.241dm² (*) (*)
2.20m 4.276dm² 2.135dm² 1.117dm² 0.180dm² (*) (*) (*)
2.40m 3.721dm² 1.485dm² 0.371dm² (*) (*) (*) (*)
2.60m 3.217dm² 0.890dm² (*) (*) (*) (*) (*)
2.80m 2.755dm² 0.340dm² (*) (*) (*) (*) (*)
3.00m 2.328dm² (*) (*) (*) (*) (*) (*)

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4P708484-1 – 2023.03
PATTERN 4
PATTERN 4 is only allowed for installations in technical rooms (i.e.
room that is NEVER occupied by persons). For this pattern there are
no requirements to the minimum floor area if you provide 2 openings
(one at the bottom, one at the top) between the room and the
outside to ensure natural ventilation. The room must be protected
from frost.
Anv (≥Anv-min)
Min. 50% of Anv-min a2
a1
A
A
Unoccupied room where the indoor unit is installed.
Must be protected from frost.
a1 Anv: Bottom opening for natural ventilation between the
unoccupied room and the outside.
▪ Must be a permanent opening that cannot be closed.
▪ Must be above ground level.
▪ Must be completely located between 0 and 300mm from
the floor of the unoccupied room.
▪ Must be ≥Anv-min (minimum bottom opening area as
specified in the table below).
▪ ≥50% of the required opening area Anv-min must be
≤200mm from the floor of the unoccupied room.
▪ The bottom of the opening must be ≤100 mm from the
floor of the unoccupied room.
▪ If the opening starts from the floor, the height of the
opening must be ≥20mm.
a2 Top opening for natural ventilation between room A and
the outside.
▪ Must be a permanent opening that cannot be closed.
▪ Must be ≥50% of Anv-min (minimum bottom opening area
as specified in the table below).
▪ Must be ≥1.5m from the floor of the unoccupied room.
Anv-min (minimum bottom opening area for natural ventilation)
The minimum bottom opening area for natural ventilation between
the unoccupied room and the outside depends on the total
refrigerant in the system. For intermediate refrigerant charges, use
the row with the higher value. Example: If the refrigerant charge is
3.5kg, use the row of 3.55kg.
Total refrigerant charge (kg) Anv-min (dm²)
3.25kg 9.1dm²
3.35kg 9.2dm²
3.45kg 9.4dm²
3.55kg 9.5dm²
3.65kg 9.7dm²
3.75kg 9.8dm²
3.85kg 9.9dm²
3.95kg 10.0dm²
4.05kg 10.2dm²
4.2 Opening and closing the unit
4.2.1 To open the indoor unit
NOTICE
The top cover can only be removed if the switch box is
lowered.
Overview
a
b
aUser interface panel
bSwitch box cover
Open
1Remove the user interface panel. Open the hinges at the top
and slide the interface panel downwards.
2
1
2Remove the switch box cover.
NOTICE
Do NOT damage or remove the foam sealing of the switch
box.
3Disconnect the ground connection from the top cover of the
switch box.

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4P708484-1 – 2023.03
1×
4.2.2 To lower the switch box of the indoor unit
and remove the top cover
During the installation, you will need access to the inside of the
indoor unit. To have easier front access, lower the switch box of the
unit as follows:
Prerequisite: The user interface panel has been removed.
1Loosen the screws.
2Lift up the switch box.
2×
2
1
3Lower the switch box.
1×
4If switch box is opened: Disconnect the ground connection from
the top cover of the switch box.
5If necessary, remove the top cover. This is necessary in the
following cases:
▪ Connecting water piping
▪ Connecting BIV or DB-kit
▪ Connecting backup heater

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4.2.3 To close the indoor unit
1Reconnect the ground connection to the top cover of the switch
box.
2Close the cover of the switch box.
3Reinstall the top cover.
4Check that the top cover is correctly fitted.
5Screw in the top cover screws to secure it.
6Put the switch box back into place.
7Reinstall the user interface panel.
NOTICE
When closing the indoor unit, 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. Also
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15].
3Slide the indoor unit into position.
NOTICE
Level. Make sure the unit is level.
4.3.2 To connect the drain hose to the drain
Spillover water from the water storage tank as well as water
collecting in the drain pan must be drained. You must connect the
drain hoses to an appropriate drain according to the applicable
legislation.
1Open the screw plug.
a
a
c
c
b
1
3
2
aScrew plug
bAssembly wrench
cSpillover connector
2Insert the spillover connector into the screw plug.
3Mount the spillover connector.
4Attach a drain hose to the spillover connector.
5Connect the drain hose to an appropriate drain. Ensure the
water can flow through the drain hose. Ensure that the water
level cannot mount above the overspill.
6Connect the drain pan hose to the drain pan connection and
connect to an appropriate drain.
a
aDrain pan hose
7Connect the pressure relief valve to an appropriate drain in
accordance with the applicable legislation. Ensure that any
steam or water that may escape is drained in a frost-protected,
safe and observable manner.
a
aPressure relief valve
5 Piping installation
5.1 Preparing refrigerant piping
5.1.1 Refrigerant piping requirements
Also see "4.1.2 Special requirements for R32 units" [4 6] for
additional requirements.
▪Piping length: See "4.1.1 Installation site requirements of the
indoor unit"[45].
▪Piping material: phosphoric acid deoxidised seamless copper
▪Piping connections: Only flare and brazed connections are
allowed. The indoor and outdoor units have flare connections.
Connect both ends without brazing. If brazing should be needed,
take the guidelines in the installer reference guide into account.
▪Flare connections: Only use annealed material.
▪Piping diameter:
Liquid piping Ø6.4mm (1/4")
Gas piping Ø15.9mm (5/8")

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▪Piping temper grade and thickness:
Outer diameter
(Ø)
Temper grade Thickness (t)(a)
6.4mm (1/4") Annealed (O) ≥0.8mm
t
Ø
15.9mm (5/8") Annealed (O) ≥1.0mm
(a) Depending on the applicable legislation and the maximum
working pressure of the unit (see "PS High" on the unit name
plate), larger piping thickness might be required.
5.1.2 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)
Insulation inner
diameter (Øi)
Insulation thickness
(t)
6.4mm (1/4") 8~10mm 10mm
15.9mm (5/8") 16~20mm 13mm
Ø
i
Ø
i
t
Ø
p
Ø
p
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.
5.2 Connecting refrigerant piping
See the installation manual of the outdoor unit for all guidelines,
specifications and installation instructions.
5.2.1 To connect the refrigerant piping to the
indoor unit
1Connect the liquid stop valve from the outdoor unit to the
refrigerant liquid connection of the indoor unit.
a
b
aRefrigerant liquid connection
bRefrigerant gas connection
2Connect the gas stop valve from the outdoor unit to the
refrigerant gas connection of the indoor unit.
5.3 Preparing water piping
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
Water circuit requirements. Make sure to comply with the
water pressure and water temperature requirements
below. For additional water circuit requirements, see the
installer reference guide.
▪Water pressure – Domestic hot water. The maximum water
pressure is 10 bar. Provide adequate safeguards in the DHW
circuit to ensure that the maximum pressure is NOT exceeded.
The minimum water pressure to operate is 1bar.
▪Water pressure – Space heating/cooling circuit. The maximum
water pressure is 3bar (=0.3MPa). Provide adequate safeguards
in the water circuit to ensure that the maximum pressure is NOT
exceeded. The minimum water pressure to operate is 1 bar
(=0.1MPa).
▪Water pressure – Storage tank. The water inside the storage
tank is not pressurized. Therefore a visual check of the water level
in the storage tank has to be carried out annually.
▪Water temperature. All installed piping and piping accessories
(valve, connections,…) MUST withstand the following
temperatures:
INFORMATION
The following figure is an example and may NOT
completely match your system layout
EXAMPLE
(*) Maximum temperature for piping and accessories
▪Storage tank – Water quality. Minimum requirements regarding
the quality of water used to fill the storage tank:
▪ Water hardness (calcium and magnesium, calculated as
calcium carbonate): ≤3mmol/l
▪ Conductivity: ≤1500 (ideal: ≤100)μS/cm
▪ Chloride: ≤250mg/l
▪ Sulphate: ≤250mg/l
▪ pH value: 6.5~8.5
For properties deviating from the minimum requirements, suitable
conditioning measures have to be taken.
5.3.1 To check the water volume and flow rate
To make sure that the unit operates properly:

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▪ You MUST check the minimum water volume and the minimum
flow rate.
Minimum water volume
Check that the total water volume in the installation is higher than
the minimum water volume, the internal water volume of the indoor
unit NOT included:
If… Then the minimum water
volume is…
Cooling operation 21l
Heating operation 21l
Minimum flow rate
Check that the minimum flow rate in the installation is guaranteed in
all conditions.
If operation is… Then the minimum required
flow rate is…
Cooling 10l/min
Heating/defrost 20l/min
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).
See the installer reference guide for more information.
See the recommended procedure as described in "8.2 Checklist
during commissioning"[443].
5.4 Connecting water piping
5.4.1 To connect the water piping
NOTICE
Do NOT use excessive force when connecting the piping.
Deformation of the piping can cause malfunctioning of the
unit.
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.
1Remove the thermal insulation of the hydraulic block. Open the
vent valve on the pump by one turn. Afterwards put the thermal
insulation back on the hydraulic block.
NOTICE
The thermal insulation can easily be damaged if NOT
handled correctly.
▪ ONLY remove parts in the order and direction as
indicated here,
▪ do NOT use force,
▪ do NOT use tools,
▪ re-install the thermal insulation in reverse order.
2Connect the shut-off valves using the flat gaskets (accessory
bag) to the space heating/cooling water pipes of the indoor unit.
3Connect the space heating/cooling field piping to the shut-off
valves using a sealing.
Do NOT exceed the maximum tightening torque (Thread size 1",
25-30 N•m). To avoid damage, apply the necessary countertorque
with a suitable tool.
2
≤Ø7 mm
1
3
4Connect the domestic hot water in and out pipes to the indoor
unit.
Do NOT exceed the maximum tightening torque (Thread size 1",
25-30 N•m). To avoid damage, apply the necessary countertorque
with a suitable tool.
1
2
5Cut open the top cover.
If the space heating/cooling or the domestic hot water pipes are
directed upwards, the top cover must be cut along the perforation
with a suitable tool.

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6Support the water piping.
For rearward facing connections: Support hydraulic lines suitably
according to the spatial conditions. This is valid for all water pipes.
dc
b a
aSpace heating/cooling water OUT (screw connection, 1")
bSpace heating/cooling water IN (screw connection, 1")
cDomestic hot water OUT (screw connection, 1")
dDomestic cold water IN (cold water supply)(screw
connection, 1")
NOTICE
▪ It is recommended to install shut-off valves on the
space heating/cooling water in and out connections, as
well as on the domestic cold water in and domestic hot
water out connections. These 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.
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
storage tank.
▪ To avoid back siphonage, it is recommended to install a
non-return valve on the water inlet of the storage tank
in accordance with the applicable legislation. Make
sure it is NOT between the pressure relief valve and
the storage 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 storage tank.
Heating of the storage tank causes water to expand
and without pressure relief valve the water pressure of
the domestic hot water heat exchanger inside the tank
can rise above 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, water leakage may
occur. To confirm good operation, regular maintenance
is required.
5.4.2 To connect a pressure vessel
1Connect a suitably dimensioned and preset pressure vessel for
the heating system. There may not be any hydraulic blocking
elements between the heat generator and the safety valve.
2Position the pressure vessel in an easily accessible place
(maintenance, parts replacement).

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5.4.3 To fill the heating system
DANGER: RISK OF ELECTROCUTION
During the filling process, water can escape from any
leaking point and can cause an electrical shock if it comes
into contact with live parts.
▪ Before the filling process, de-energise the unit.
▪ After the first filling and before switching on the unit
with the mains switch, check whether all electric parts
and connection points are dry.
1Connect a hose with a non-return valve (1/2") and an external
manometer (field supply) to a water tap and the fill and drain
valve. Secure the hose against slipping off.
j/k
e.1 B
AB
A
e.2
50%
(45%)
100%
0%
CH Bypass
(B) (A)
f
a
h
i
c
j
k
d
b
g
50%
(67%)
100%
0% CH DHW
(A) (B)
aHose with a non-return valve (1/2") and an external
manometer (field supply)
bFill and drain valve
cSpace heating/cooling water OUT
dSpace heating/cooling water IN
e.1 Valve motor
e.2 Valve motor latch
fWater tap
gAutomatic air purge valve
hPressure gauge (field supply)
iPressure vessel (field supply)
jBypass valve
kTank valve
2Prepare for air purging according to the instructions (see
"8.2.2To perform an air purge"[444]).
3Open the water tap.
4Open fill and drain valve and monitor the manometer.
5Fill the system with water until the external manometer shows
that the system target pressure is reached (system height +2m;
1m water column = 0.1bar). Make sure that the pressure relief
valve does not open.
6Close the manual air vent valves as soon as water emerges
free of bubbles.
7Close the water tap. Keep the fill and drain valve open in case it
is necessary to repeat the filling procedure after the air purging
of the system. See "8.2.2To perform an air purge"[444].
8Close the fill and drain valve and remove the hose with non-
return valve only after air purging is performed and the system
is completely filled.
5.4.4 To fill the heat exchanger inside the
storage tank
Following heat exchanger have to be filled with water before the
storage tank can be filled:
▪ The domestic hot water heat exchanger
NOTICE
To fill the domestic hot water heat exchanger, use a field
supply filling kit. Make sure you comply with the applicable
legislation.
1Open the shut-off valve for the cold water supply.
2Open all hot water taps in the system to make sure that the
tapped water flow is as high as possible.
3Keep the hot water taps open and the cold water supply running
until no more air is vented from the taps.
4Check for water leaks.
▪ The bivalent heat exchanger (only for some models)
5Fill the bivalent heat exchanger with water by connecting the
bivalent heating circuit. If the bivalent heating circuit will be
installed on a later stage, fill the bivalent heat exchanger with a
filling hose until water comes out of both connections.
6Do air purge on the bivalent heating circuit.
7Check for water leaks.
5.4.5 To fill the storage tank
NOTICE
Before the storage tank can be filled, the heat exchangers
inside the storage tank have to be filled, see previous
chapters.
Fill the storage tank with a water pressure <6 bar and a
flow speed <15l/min.
Without installed drainback solar kit (option)
1Connect a hose with non-return valve (1/2") to the drainback
connection.
2Fill the storage tank until water spills from the spillover
connection.
3Remove the hose.

6 Electrical installation
Installation manual
20
ELSH/X(B)12P30+50E
Daikin Altherma 3 R MT ECH₂O
4P708484-1 – 2023.03
aDrainback connection
bSpillover connection
cHose with non-return valve (1/2")
With installed drainback solar kit (option)
1Combine the fill and drain kit (option) with the drainback solar
kit (option) to fill the storage tank.
2Connect the hose with non-return valve to the fill and drain kit.
Follow the steps described in the previous chapter.
5.4.6 To insulate the water piping
The piping in the complete water circuit MUST be insulated to
prevent condensation during cooling operation and reduction of the
heating and cooling capacity.
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.
6 Electrical installation
DANGER: RISK OF ELECTROCUTION
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.
NOTICE
The distance between the high voltage and low voltage
cables should be at least 50mm.
6.1 About electrical compliance
Only for the backup heater of the indoor unit
See "6.3.3To connect the backup heater power supply"[424].
6.2 Guidelines when connecting the
electrical wiring
Tightening torques
Indoor unit:
Item Tightening torque (N•m)
M4 (X1M) 1.2
M4 (X12M, X15M) 0.88 ±10%
Indoor unit – BUH option:
Item Tightening torque (N•m)
M4 (X6M) *3V, *6V 2.45 ±10%
M4 (X6M) *9W 1.2
6.3 Connections to the indoor unit
Item Description
Power supply (main) See "6.3.2To connect the main power
supply"[423].
Power supply (backup
heater)
See "6.3.3To connect the backup heater
power supply"[424].
Backup heater See "6.3.4To connect the backup heater to
the main unit"[425].
Shut-off valve See "6.3.5To connect the shut-off
valve"[426].
Electricity meters See "6.3.6To connect the electricity
meters"[426].
Domestic hot water
pump
See "6.3.7To connect the domestic hot
water pump"[427].