Daikin Altherma ERRA08E V3 Series User manual

Installation manual
Daikin Altherma 3 R MT English
Installation manual
Daikin Altherma 3 R MT
ERRA08E▲V3▼
ERRA10E▲V3▼
ERRA12E▲V3▼
ERRA08E▲W1▼
ERRA10E▲W1▼
ERRA12E▲W1▼
▲= 1, 2, 3, …, 9, A, B, C, …, Z
▼= , , 1, 2, 3, …, 9
https://daikintechnicaldatahub.eu

1

Table of contents
Installation manual
3
ERRA08~12E
Daikin Altherma 3 R MT
4P708481-1 – 2023.02
Table of contents
1 About this document 3
2 Specific installer safety instructions 4
3 About the box 5
3.1 Outdoor unit............................................................................... 5
3.1.1 To remove the accessories from the outdoor unit....... 5
4 Unit installation 5
4.1 Preparing the installation site .................................................... 5
4.1.1 Installation site requirements of the outdoor unit ........ 5
4.2 Mounting the outdoor unit.......................................................... 6
4.2.1 To provide the installation structure ............................ 6
4.2.2 To install the outdoor unit............................................ 6
4.2.3 To provide drainage .................................................... 6
4.3 To open the outdoor unit ........................................................... 7
4.4 To remove the transportation stay............................................. 7
4.5 To attach the compressor cover piece ...................................... 8
5 Piping installation 8
5.1 Connecting the refrigerant piping .............................................. 8
5.1.1 To connect the refrigerant piping to the outdoor unit .. 8
5.2 Checking the refrigerant piping ................................................. 9
5.2.1 To check for leaks....................................................... 9
5.2.2 To perform vacuum drying .......................................... 9
5.3 Charging refrigerant .................................................................. 9
5.3.1 To determine the additional refrigerant amount.......... 9
5.3.2 To charge additional refrigerant .................................. 10
5.3.3 To fix the fluorinated greenhouse gases label ............ 10
6 Electrical installation 10
6.1 About electrical compliance....................................................... 10
6.2 Specifications of standard wiring components .......................... 10
6.3 Guidelines when connecting the electrical wiring...................... 11
6.4 To connect the electrical wiring to the outdoor unit ................... 11
6.4.1 In case of V3 models .................................................. 11
6.4.2 In case of W1 models ................................................. 12
6.5 To reposition the air thermistor on the outdoor unit................... 13
7 Finishing the outdoor unit installation 13
7.1 Insulate and fix the refrigerant piping and cable........................ 13
7.2 To close the outdoor unit........................................................... 13
7.3 To install the discharge grille..................................................... 14
7.4 To remove the discharge grille, and put the grille in safety
position ...................................................................................... 14
8 Starting up the outdoor unit 15
9 Technical data 16
9.1 Piping diagram: Outdoor unit..................................................... 16
9.2 Wiring diagram: Outdoor unit .................................................... 17
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)
▪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.

2 Specific installer safety instructions
Installation manual
4
ERRA08~12E
Daikin Altherma 3 R MT
4P708481-1 – 2023.02
App Store Google Play
2 Specific installer safety
instructions
Always observe the following safety instructions and regulations.
Installation site (see "4.1Preparing the installation site"[45])
WARNING
Follow the service space dimensions in this manual for
correct installation of the unit. See "4.1.1 Installation site
requirements of the outdoor unit"[45].
Special requirements for R32 (see "4.1.1Installation site
requirements of the outdoor unit"[45])
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 in a 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.
Mounting the outdoor unit (see "4.2Mounting the outdoor
unit"[46])
WARNING
Fixing method of the outdoor unit MUST be in accordance
with the instructions from this manual. See "4.2 Mounting
the outdoor unit"[46].
Opening and closing the units (see "4.2Mounting the outdoor
unit"[46])
DANGER: RISK OF ELECTROCUTION
Do NOT leave the unit unattended when the service cover
is removed.
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
Piping installation (see "5Piping installation"[48])
WARNING
The field piping method MUST be in accordance with the
instructions from this manual. See "5 Piping
installation"[48].
DANGER: RISK OF BURNING/SCALDING
WARNING
Provide adequate measures to prevent that the unit can be
used as a shelter by small animals. Small animals that
make contact with electrical parts can cause malfunctions,
smoke or fire.
WARNING
▪ Only use R32 as refrigerant. Other substances may
cause explosions and accidents.
▪ R32 contains fluorinated greenhouse gases. Its global
warming potential (GWP) value is 675. Do NOT vent
these gases into the atmosphere.
▪ When charging refrigerant, ALWAYS use protective
gloves and safety glasses.
Electrical installation (see "6Electrical installation"[410])
DANGER: RISK OF ELECTROCUTION
WARNING
Electrical wiring connection method MUST be in
accordance with the instructions from:
▪ This manual. See "6Electrical installation"[410].
▪ The wiring diagram, which is delivered with the unit,
located at the inside of the service cover. For a
translation of its legend, see "9.2 Wiring diagram:
Outdoor unit"[417].
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
Rotating fan. Before powering ON or servicing the outdoor
unit, make sure that the discharge grille covers the fan as
protection against a rotating fan. See:
▪"7.3To install the discharge grille"[414]
▪"7.4To remove the discharge grille, and put the grille in
safety position"[414]
CAUTION
Do NOT push or place redundant cable length into the unit.
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.
INFORMATION
Details of type and rating of fuses, or rating of circuit
breakers are described in "6Electrical installation"[410].

3 About the box
Installation manual
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4P708481-1 – 2023.02
Finishing the installation (see "7Finishing the outdoor unit
installation"[413])
WARNING
Rotating fan. Before powering ON or servicing the outdoor
unit, make sure that the discharge grille covers the fan as
protection against a rotating fan. See:
▪"7.3To install the discharge grille"[414]
▪"7.4To remove the discharge grille, and put the grille in
safety position"[414]
Starting up (see "8Starting up the outdoor unit"[415])
WARNING
Rotating fan. Before powering ON or servicing the outdoor
unit, make sure that the discharge grille covers the fan as
protection against a rotating fan. See:
▪"7.3To install the discharge grille"[414]
▪"7.4To remove the discharge grille, and put the grille in
safety position"[414]
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.
3.1 Outdoor unit
3.1.1 To remove the accessories from the
outdoor unit
aO-ring for drain socket
bDrain socket
cThermistor fixture (for installations in areas with low
ambient temperatures)
dCompressor cover piece
eDeclaration of conformity
fInstallation manual – Outdoor unit
gDisposal manual – Recovering refrigerant
hMultilingual fluorinated greenhouse gases label
iFluorinated greenhouse gases label
jEnergy label
kDischarge grille (upper + lower part)
lInstallation manual – Discharge grille
NOTICE
Unpacking. When you remove the top packaging/
accessories, hold the box containing the discharge grille to
prevent it from falling.
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).
4.1.1 Installation site requirements of the
outdoor unit
Mind the spacing guidelines. See figure 1 on the inside of the front
cover.
Translation of text on figure 1:
English Translation
General General
No top-side obstacle No top-side obstacle
Top-side obstacle Top-side obstacle
Wall height unrestricted Wall height unrestricted
The outdoor unit is designed for outdoor installation only, and for the
following ambient temperatures:
Cooling mode 10~43°C
Heating mode –25~25°C

4 Unit installation
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4.2 Mounting the outdoor unit
4.2.1 To provide the installation structure
NOTICE
Level. Make sure the unit is leveled in all directions.
Recommended:
Use 4 sets of M12 anchor bolts, nuts and washers. Provide at least
150 mm of free space below the unit. Additionally, make sure the
unit is positioned at least 100 mm above the maximum expected
level of snow.
Anchor points
800
(mm)
479
Pedestal
When installing on a pedestal, make sure that the discharge grille
still can be put in its safety position. See "7.4 To remove the
discharge grille, and put the grille in safety position"[414].
800
479
a
≥150
(mm)
4× M12
aMake sure not to cover the drain hole in the bottom plate
of the unit.
4.2.2 To install the outdoor unit
CAUTION
To avoid injury, do NOT touch the air inlet or aluminium
fins of the unit.
1Carry the unit by its slings, and put it onto the installation
structure.
2Fix the unit to the installation structure.
4× M12
3Remove the slings (and screws), and dispose of them.
4×
4.2.3 To provide drainage
Make sure that condensation water can be evacuated properly.

4 Unit installation
Installation manual
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NOTICE
If the unit is installed in a cold climate, take adequate
measures to prevent freezing condensate from affecting
the unit or its surroundings negatively. We recommend the
following:
▪ If a drain hose is required: Prevent condensate freeze
up in the drain hose with a field supply drain hose
heater with thermostat (external power supply). Insulate
the drain hose.
▪ If no drain hose is required: Make sure condensate
which drains from the unit and freezes does not
damage the surroundings of the unit or create slippery
ice patches.
ðIn both cases the drain plug must be installed.
NOTICE
Provide at least 150 mm of free space below the unit.
Additionally, make sure the unit is positioned at least
100mm above the expected level of snow.
Use the drain plug (with O-ring) for drainage.
1 2
a
b
c
aDrain hole
bO-ring (delivered as accessory)
cDrain plug (delivered as accessory)
NOTICE
O-ring. Make sure the O-ring is installed correctly to
prevent leakage.
4.3 To open the outdoor unit
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
1Open the service cover.
2If necessary, open the side cover. This is, for example,
necessary in the following cases:
▪ When connecting the refrigerant piping.
▪ When checking the refrigerant piping.
▪ When charging refrigerant.
▪ When recovering refrigerant.
8×
5
5
5
7×
6
67
4.4 To remove the transportation stay
NOTICE
If the unit is operated with the transportation stay attached,
abnormal vibration or noise may be generated.
The transportation stay protects the unit during transport. During
installation it must be removed.

5 Piping installation
Installation manual
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a
aTransportation stay
1Open the service cover. See "4.3 To open the outdoor
unit"[47].
2Remove the screws (5×) from the transportation stay. Remove
the transportation stay and dispose of it. Keep 4 screws to
attach the compressor cover piece (see "4.5 To attach the
compressor cover piece"[48]).
4.5 To attach the compressor cover
piece
Required accessory (delivered with the unit):
Compressor cover piece
1Put the compressor cover piece on its place. Use the screws
(4x) of the transportation stay to fix it (see "4.4To remove the
transportation stay"[47]).
5 Piping installation
5.1 Connecting the refrigerant piping
DANGER: RISK OF BURNING/SCALDING
NOTICE
Vibration. To prevent vibration of the refrigerant piping
during operation, fixate the piping between the outdoor and
indoor unit.
NOTICE
Vibration. To prevent vibration noise of the rubber
grommet during operation, make sure the rubber grummet
is not deformed by refrigerant piping. Insert refrigerant
piping into the outdoor unit as straight as possible. If
necessary, ensure that piping bends are not placed close
to the rubber grommet.
5.1.1 To connect the refrigerant piping to the
outdoor unit
▪Piping length. Keep field piping as short as possible.
▪Piping protection. Protect the field piping against physical
damage.
1Open the outdoor unit step 1 and 2 ("4.3To open the outdoor
unit"[47]).
2Detach the outer side of the rubber grommet.
3Do the following:
▪ Connect the liquid pipe (a) to the liquid stop valve.
▪ Connect the gas pipe (b) to the gas stop valve.
4Do the following:

5 Piping installation
Installation manual
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4P708481-1 – 2023.02
▪ Insulate the liquid piping (a) and the gas piping (b). Also
inside the outdoor unit.
▪ Wind heat insulation around the curves, and then cover it
with vinyl tape (c).
▪ Make sure the field piping does not touch any compressor
components.
▪ Seal the insulation ends (sealant etc.) (d).
5If the outdoor unit is installed above the indoor unit, cover the
stop valves (e, see above) with sealing material to prevent
condensed water on the stop valves from moving to the indoor
unit.
NOTICE
Any exposed piping might cause condensation.
6Reattach the outer side of the rubber grommet.
WARNING
Provide adequate measures to prevent that the unit can be
used as a shelter by small animals. Small animals that
make contact with electrical parts can cause malfunctions,
smoke or fire.
NOTICE
Make sure to open the stop valves after installing the
refrigerant piping and performing vacuum drying. Running
the system with the stop valves closed may break the
compressor.
5.2 Checking the refrigerant piping
5.2.1 To check for leaks
NOTICE
Do NOT exceed the unit's maximum working pressure (see
"PS High" on the unit name plate).
NOTICE
ALWAYS use a recommended bubble test solution from
your wholesaler.
NEVER use soap water:
▪ Soap water may cause cracking of components, such
as flare nuts or stop valve caps.
▪ Soap water may contain salt, which absorbs moisture
that will freeze when the piping gets cold.
▪ Soap water contains ammonia which may lead to
corrosion of flared joints (between the brass flare nut
and the copper flare).
1Charge the system with nitrogen gas up to a gauge pressure of
at least 200 kPa (2 bar). It is recommended to pressurize to
3000kPa (30bar) in order to detect small leaks.
2Check for leaks by applying the bubble test solution to all
connections.
3Discharge all nitrogen gas.
5.2.2 To perform vacuum drying
NOTICE
▪ Connect the vacuum pump to both the service port of
the gas stop valve and the service port of the liquid
stop valve to increase efficiency.
▪ Make sure that the gas stop valve and liquid stop valve
are firmly closed before performing the leak test or
vacuum drying.
1Vacuum the system until the pressure on the manifold indicates
−0.1MPa (−1bar).
2Leave as is for 4-5minutes and check the pressure:
If the pressure… Then…
Does not change There is no moisture in the
system. This procedure is
finished.
Increases There is moisture in the
system. Go to the next step.
3Vacuum the system for at least 2hours to a manifold pressure
of −0.1MPa (−1bar).
4After turning the pump OFF, check the pressure for at least
1hour.
5If you do NOT reach the target vacuum or CANNOT maintain
the vacuum for 1hour, do the following:
▪ Check for leaks again.
▪ Perform vacuum drying again.
NOTICE
Make sure to open the stop valves after installing the
refrigerant piping and performing vacuum drying. Running
the system with the stop valves closed may break the
compressor.
5.3 Charging refrigerant
5.3.1 To determine the additional refrigerant
amount
If the total liquid
piping length is…
Then…
≤10m Do NOT add additional refrigerant.

6 Electrical installation
Installation manual
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ERRA08~12E
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4P708481-1 – 2023.02
If the total liquid
piping length is…
Then…
>10m R=(total length (m) of liquid
piping⁠–⁠10m)×0.020
R=Additional charge (kg) (rounded in units
of 0.01kg)
INFORMATION
Piping length is the one-way length of liquid piping.
5.3.2 To charge additional refrigerant
WARNING
▪ Only use R32 as refrigerant. Other substances may
cause explosions and accidents.
▪ R32 contains fluorinated greenhouse gases. Its global
warming potential (GWP) value is 675. Do NOT vent
these gases into the atmosphere.
▪ When charging refrigerant, ALWAYS use protective
gloves and safety glasses.
Prerequisite: Before charging refrigerant, make sure the refrigerant
piping is connected and checked (leak test and vacuum drying).
1Connect the refrigerant cylinder to the service port of the gas
stop valve.
2Charge the additional refrigerant amount.
3Open the stop valves.
5.3.3 To fix the fluorinated greenhouse gases
label
1Fill in the label as follows:
b
Contains fluorinated greenhouse gases
2
11
1
2
2kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
a
f
c
d
e
aIf a multilingual fluorinated greenhouse gases label is
delivered with the unit (see accessories), peel off the
applicable language and stick it on top of a.
bFactory refrigerant charge: see unit name plate
cAdditional refrigerant amount charged
dTotal refrigerant charge
e Quantity of fluorinated greenhouse gases of the total
refrigerant charge expressed as tonnes CO2 equivalent.
fGWP = Global Warming Potential
NOTICE
Applicable legislation on fluorinated greenhouse gases
requires that the refrigerant charge of the unit is indicated
both in weight and CO2 equivalent.
Formula to calculate the quantity in CO2 equivalent
tonnes: GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
Use the GWP value mentioned on the refrigerant charge
label.
2Fix the label on the inside of the outdoor unit. There is a
dedicated place for it on the wiring diagram label.
6 Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
Rotating fan. Before powering ON or servicing the outdoor
unit, make sure that the discharge grille covers the fan as
protection against a rotating fan. See:
▪"7.3To install the discharge grille"[414]
▪"7.4To remove the discharge grille, and put the grille in
safety position"[414]
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 ERRA08~12E▲V3▼
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.).
6.2 Specifications of standard wiring
components
NOTICE
We recommend using solid (single-core) wires. If stranded
wires are used, slightly twist the strands to consolidate the
end of the conductor for either direct use in the terminal
clamp or insertion in a round crimp-style terminal. Details
are described in "Guidelines when connecting the electrical
wiring" in the installer reference guide.
Component V3 W1
Power supply
cable
MCA(a) 29.5A 9.8A
Voltage 220-240V 380-415V
Phase 1~ 3N~
Frequency 50Hz
Wire size MUST comply with national wiring
regulation.
3 or 5-core cable
Wire size based on the current, but
not less than 2.5mm2
Interconnectio
n cable (indoor
↔ outdoor)
Voltage 220-240V
Wire size Only use harmonised wire providing
double insulation and suitable for
applicable voltage.
4-core cable
Minimum 1.5mm2
Recommended field fuse 32A, C curve 16A or 20A, C
curve
Earth leakage circuit breaker /
residual current device
30mA – MUST comply with national
wiring regulation

6 Electrical installation
Installation manual
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(a) MCA=Minimum circuit ampacity. Stated values are maximum
values (see electrical data of combination with indoor units for
exact values).
6.3 Guidelines when connecting the
electrical wiring
Tightening torques
Outdoor unit:
Item Tightening torque (N•m)
X1M 1.47 ±10%
X2M
M4 (earth)
6.4 To connect the electrical wiring to
the outdoor unit
NOTICE
▪ Follow the wiring diagram (delivered with the unit,
located at the inside of the service cover).
▪ Make sure the electrical wiring does NOT obstruct
proper reattachment of the service cover.
1Open the service cover. See "4.3 To open the outdoor
unit"[47].
2Insert the cables at the back of the unit, and route them through
the factory-mounted cable sleeves into the switch box.
a1+a2 Power supply cable (field supply)
b1+b2 Interconnection cable (field supply)
c1+c2 No use
dCable sleeves (factory-mounted)
3Inside the switch box, connect the wires to the appropriate
terminals, and fix the cables with cable ties. See:
▪"6.4.1In case of V3 models"[411]
▪"6.4.2In case of W1 models"[412]
6.4.1 In case of V3 models
1 Power supply cable:
▪ Route the cable through the frame.
▪ Connect the wires to the terminal block.
▪ Fix the cable with a cable tie.
Wires: 1N+GND
Maximum running current: Refer to name plate on unit.
—
Q1DI
1N~,
50 Hz,
230 V AC
F1B
1
3
2
4
II
BRN
BLU
YLW/GRN
b
a
L
N
aPower supply cable (field supply)
bField wiring
F1B Overcurrent fuse (field supply). Recommended fuse: 2
pole, 32A fuse, C curve.
Q1DI Earth leakage circuit breaker (30mA)(field supply)
2 Interconnection cable (indoor↔outdoor):
▪ Route the cable through the frame.
▪ Connect the wires to the terminal block (make sure the
numbers match with the numbers on the indoor unit) and the
earth screw.
▪ Fix the cable with a cable tie.
Wires: (3+GND)×1.5mm²
—

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3(Optional) Power saving function: If you want to use the
power saving function:
▪ Disconnect X804A from X805A.
▪ Connect X804A to X806A.
INFORMATION
Power saving function. The power saving function is only
applicable for V3 models. For more information about the
power saving function ([9.F] or overview field setting
[E‑08]), see the installer reference guide.
6.4.2 In case of W1 models
1 Power supply cable:
▪ Route the cable through the frame.
▪ Connect the wires to the terminal block.
▪ Fix the cable with a cable tie.
Wires: 3N+GND
Maximum running current: Refer to name plate on unit.
—
3N~,
50 Hz,
400 V AC
b
a
Q1DI
L1
L2
L3
N
F1B
1
3
5
7
2
4
6
8
IIII
BRN
GRY
BLK
BLU
YLW/GRN
aPower supply cable (field supply)
bField wiring
F1B Overcurrent fuse (field supply). Recommended fuse: 4
pole, 16A or 20A fuse, C curve.
Q1DI Earth leakage circuit breaker (30mA)(field supply)
2 Interconnection cable (indoor↔outdoor):
▪ Route the cable through the frame.
▪ Connect the wires to the terminal block (make sure the
numbers match with the numbers on the indoor unit) and the
earth screw.
▪ Fix the cable with a cable tie.
Wires: (3+GND)×1.5mm²
—

7 Finishing the outdoor unit installation
Installation manual
13
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6.5 To reposition the air thermistor on
the outdoor unit
This procedure is only necessary in areas with low ambient
temperatures.
Required accessory (delivered with the unit):
Thermistor fixture.
2 3
Click
4 5
67
7 Finishing the outdoor unit
installation
7.1 Insulate and fix the refrigerant
piping and cable
1Insulate and fix the refrigerant piping and cables as follows:
g
b
a
f
e
cd
aGas pipe
bGas pipe insulation
cInterconnection cable
dField wiring (if applicable)
eLiquid pipe
fLiquid pipe insulation
gFinishing tape
2Install the service cover.
7.2 To close the outdoor unit
NOTICE
When closing the outdoor unit cover, make sure that the
tightening torque does NOT exceed 4.1N•m.
1If necessary, close the side cover.
1
8×
3
3
3
7×
2
2
2Close the service cover.

7 Finishing the outdoor unit installation
Installation manual
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4P708481-1 – 2023.02
1
1
2
32
4
4
3
3×
3
1
7.3 To install the discharge grille
Install the lower part of the discharge grille
1Insert the hooks.
2Insert the ball studs.
12
3Fix the 2 lower screws.
3
2× 5 N•m
Install the upper part of the discharge grille
NOTICE
Vibrations. Make sure the upper part of the discharge
grille is attached seamlessly to the lower part to prevent
vibrations.
4Align and attach the left side.
5Align and attach the middle part.
6Align and attach the right side.
5
46
7Insert the hooks.
8Insert the ball studs.
8
7
9Fix the 6 remaining screws.
9
6× 5 N•m
7.4 To remove the discharge grille, and
put the grille in safety position
WARNING
Rotating fan. Before powering ON or servicing the outdoor
unit, make sure that the discharge grille covers the fan as
protection against a rotating fan. See:
▪"7.3To install the discharge grille"[414]
▪"7.4To remove the discharge grille, and put the grille in
safety position"[414]
1Remove the upper part of the discharge grille.

8 Starting up the outdoor unit
Installation manual
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4P708481-1 – 2023.02
4×
2Remove the lower part of the discharge grille.
4×
3Rotate the lower part of the discharge grille.
4Align the ball stud and hook on the grille with their counterparts
on the unit.
5Insert the hook.
6Insert the ball stud.
6
5
8 Starting up the outdoor unit
See the indoor unit installation manual for configuration and
commissioning of the system.
WARNING
Rotating fan. Before powering ON or servicing the outdoor
unit, make sure that the discharge grille covers the fan as
protection against a rotating fan. See:
▪"7.3To install the discharge grille"[414]
▪"7.4To remove the discharge grille, and put the grille in
safety position"[414]

9 Technical data
Installation manual
16
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Daikin Altherma 3 R MT
4P708481-1 – 2023.02
9 Technical 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).
9.1 Piping diagram: Outdoor unit
3D142205 A
c
e
f
g
d
i
g
h
g
g
e
f
o
o
p
n
k
jj
m
l
jj
Gas Gas Thermistors:
Liquid Liquid R1T Thermistor - outdoor air
aFlare connection 5/8" R2T Thermistor - compressor discharge
bFlare connection 1/4" R3T Thermistor - compressor suction
cGas stop valve with service port R4T Thermistor - air heat exchanger, distributor
dLiquid stop valve R5T Thermistor - air heat exchanger, middle
ePinched pipe R7T Thermistor - injection
fRefrigerant filter
gOne-way valve
hEconomiser heat exchanger Refrigerant flow:
iService port 5/16" flare Heating
jCapillary tube Cooling
kDistributor
lAir heat exchanger
mPCB cooling
nAccumulator
oMuffler
pCasing
M1C Compressor
M1F Fan motor
S1PH High pressure switch (4.6MPa)
S2PH High pressure switch (4.17MPa)
S1NPH High pressure sensor
Y1E Electronic expansion valve (main)
Y3E Electronic expansion valve (injection)
Y1S Solenoid valve (4-way valve)
Y2S Solenoid valve (low pressure bypass)
Y3S Solenoid valve (hot gas bypass)
Y4S Solenoid valve (liquid injection)
Q1E Overload

9 Technical data
Installation manual
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Daikin Altherma 3 R MT
4P708481-1 – 2023.02
9.2 Wiring diagram: Outdoor unit
The wiring diagram is delivered with the unit, located at the inside of
the service cover.
English Translation
Electronic component assembly Electronic component assembly
Front side view Front side view
Indoor Indoor
OFF OFF
ON ON
Outdoor Outdoor
Position of compressor terminal Position of compressor terminal
Position of elements Position of elements
Rear side view Rear side view(a)
Right side view Right side view
See note *** See note ***
(a) Only for *W1 models.
Notes:
1 Symbols:
L Live
N Neutral
Protective earth
Noiseless earth
Field wiring
Option
Terminal strip
Terminal
Connector
Connection
2 Colours:
BLK Black
RED Red
BLU Blue
WHT White
GRN Green
YLW Yellow
PNK Pink
ORG Orange
GRY Grey
BRN Brown
3 This wiring diagram applies only to the outdoor unit.
4 When operating, do not short-circuit protective devices Q1,
S1PH, S2PH and S1PL.
5 Refer to the combination table and the option manual for how
to connect the wiring to X5A(a), X77A(a) and X41A.
6 The factory setting of all switches is OFF, do not change the
setting of the selector switch (DS1).
(a) Only for *W1 models.
Legend in case of W1 models:
A1P Printed circuit board (main)
A2P Printed circuit board (noise filter)
BS1~BS3 (A1P) Push button switch
C1~C7 (A1P) Capacitor
DS1 (A1P) DIP switch
F1U Field fuse (field supply)
F1U~F4U (A2P) Fuse (T 6.3A / 250V)
F5U (A1P) Fuse (T 5.0A / 250V)
HAP (A1P) Light-emitting diode (service monitor is
green)
K1R (A1P) Magnetic relay (Y1S)
K2R (A1P) Magnetic relay (Y2S)
K3R (A1P) Magnetic relay (Y3S)
K4R Magnetic relay (Y4S)
K6R~K84R (A1P) Magnetic relay
K1M~K2M (A1P) Magnetic contactor
L1R~L5R (A1P, A2P) Reactor
M1C Compressor motor
M1F Fan motor
PS (A1P) Switching power supply
Q1DI Earth leakage circuit breaker (30mA) (field
supply)
Q1 Thermal overcurrent protector
R1~R9 (A1P) Resistor
R1T Thermistor (outdoor air)
R2T Thermistor (compressor discharge)
R3T Thermistor (compressor suction)
R4T Thermistor (air heat exchanger, liquid pipe)
R5T Thermistor (air heat exchanger, middle)
R7T Thermistor (injection)
R11T Thermistor (fin)
RC (A1P) Signal receiver circuit
S1NPH High pressure sensor
S1PH, S2PH High pressure switch
S1PL Low pressure switch
SEG* (A1P) 7‑segment display
TC (A1P) Signal transmission circuit
V1D~V3D (A1P) Diode
V1R~V2R (A1P) Diode module
V3R~V5R (A1P) Insulated Gate Bipolar Transistor (IGBT)
power module
X1M Terminal strip
Y1E Electronic expansion valve (main)
Y3E Electronic expansion valve (injection)
Y1S Solenoid valve (4‑way valve)
Y2S Solenoid valve (low pressure bypass)
Y3S Solenoid valve (hot gas bypass)
Y4S Solenoid valve (liquid injection)
Z1C~Z10C Noise filter (ferrite core)
Z1F~Z5F (A1P, A2P) Noise filter
Legend in case of V3 models:
A1P Printed circuit board (main)
A2P Printed circuit board (noise filter)
A5P Printed circuit board (flash)
BS1~BS4 (A1P) Push button switch
C1~C4 (A1P, A2P) Capacitor
DS1 (A1P) DIP switch
F1U Field fuse (field supply)
F1U~F4U (A2P) Fuse (T 6.3A / 250V)
F6U (A1P) Fuse (T 5.0A / 250V)

9 Technical data
Installation manual
18
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Daikin Altherma 3 R MT
4P708481-1 – 2023.02
H1P~H7P (A1P) Light-emitting diode (service monitor is
orange)
HAP (A1P) Light-emitting diode (service monitor is
green)
K1R (A1P) Magnetic relay (Y1S)
K2R (A1P) Magnetic relay (Y2S)
K3R (A1P) Magnetic relay (Y3S)
K4R (A1P) Magnetic relay (Y4S)
K10R (A1P) Magnetic relay
K11M (A1P) Magnetic contactor
K13R~K15R (A1P,
A2P)
Magnetic relay
L1R~L3R (A1P) Reactor
M1C Compressor motor
M1F Fan motor
PS (A1P) Switching power supply
Q1DI Earth leakage circuit breaker (30mA) (field
supply)
R1~R5 (A1P, A2P) Resistor
R1T Thermistor (outdoor air)
R2T Thermistor (compressor discharge)
R3T Thermistor (compressor suction)
R4T Thermistor (air heat exchanger, liquid pipe)
R5T Thermistor (air heat exchanger, middle)
R7T Thermistor (injection)
R11T Thermistor (fin)
RC (A2P) Signal receiver circuit
S1NPH High pressure sensor
S1PH, S2PH High pressure switch
S1PL Low pressure switch
TC (A2P) Signal transmission circuit
V1D~V4D (A1P) Diode
V1R (A1P) IGBT power module
V2R (A1P) Diode module
V1T~V3T (A1P) Insulated Gate Bipolar Transistor (IGBT)
X1M Terminal strip
Y1E Electronic expansion valve (main)
Y3E Electronic expansion valve (injection)
Y1S Solenoid valve (4‑way valve)
Y2S Solenoid valve (low pressure bypass)
Y3S Solenoid valve (hot gas bypass)
Y4S Solenoid valve (liquid injection)
Z1C~Z11C Noise filter (ferrite core)
Z1F~Z6F (A1P, A2P) Noise filter

4P708481-1 2023.02
Copyright 2023 Daikin
4P708481-1 0000000Q
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