Daikin Altherma EHFH-D3V User manual

Installation manual
Daikin Altherma 3 R F English
Installation manual
Daikin Altherma 3 R F
EHFH03S18D▲3V▼
▲= A, B, C, …, Z
▼= , , 1, 2, 3, …, 9

Table of contents
Installation manual
2
EHFH03S18D
Daikin Altherma 3 R F
4P596803-1D – 2022.08
Table of contents
1 About this document 2
2 Specific installer safety instructions 3
3 About the box 4
3.1 Indoor unit ................................................................................. 4
3.1.1 To remove the accessories from the indoor unit......... 4
3.1.2 To handle the indoor unit ............................................ 4
4 Unit installation 4
4.1 Preparing the installation site .................................................... 4
4.1.1 Installation site requirements of the indoor unit .......... 5
4.2 Opening and closing the unit..................................................... 5
4.2.1 To open the indoor unit............................................... 5
4.2.2 To lower the switch box on the indoor unit.................. 6
4.2.3 To close the indoor unit............................................... 6
4.3 Mounting the indoor unit............................................................ 6
4.3.1 To install the indoor unit.............................................. 6
4.3.2 To connect the drain hose to the drain ....................... 7
5 Piping installation 7
5.1 Connecting refrigerant piping .................................................... 7
5.1.1 To connect the refrigerant piping to the indoor unit .... 7
5.2 Preparing water piping .............................................................. 7
5.2.1 To check the water volume and flow rate ................... 8
5.3 Connecting water piping............................................................ 8
5.3.1 To connect the water piping........................................ 8
5.3.2 To connect the recirculation piping ............................. 9
5.3.3 To fill the water circuit ................................................. 9
5.3.4 To fill the domestic hot water tank .............................. 9
5.3.5 To insulate the water piping ........................................ 9
6 Electrical installation 9
6.1 About electrical compliance....................................................... 9
6.2 Guidelines when connecting the electrical wiring...................... 10
6.3 Connections to the indoor unit................................................... 10
6.3.1 To connect the main power supply ............................. 11
6.3.2 To connect the backup heater power supply .............. 12
6.3.3 To connect the user interface ..................................... 13
6.3.4 To connect the shut-off valve...................................... 13
6.3.5 To connect the electricity meters ................................ 14
6.3.6 To connect the domestic hot water pump................... 14
6.3.7 To connect the alarm output ....................................... 15
6.3.8 To connect the space cooling/heating ON/OFF
output .......................................................................... 15
6.3.9 To connect the changeover to external heat source... 16
6.3.10 To connect the power consumption digital inputs ....... 16
6.3.11 To connect the safety thermostat (normally closed
contact) ....................................................................... 17
6.4 After connecting the electrical wiring to the indoor unit ............. 17
7 Configuration 18
7.1 Overview: Configuration ............................................................ 18
7.1.1 To change the user permission level .......................... 18
7.1.2 To access the most used commands ......................... 18
7.2 Basic configuration .................................................................... 19
7.2.1 Quick wizard: Language / time and date..................... 19
7.2.2 Quick wizard: Standard............................................... 19
7.2.3 Quick wizard: Options ................................................. 19
7.2.4 Space heating/cooling control..................................... 21
7.2.5 Domestic hot water control ......................................... 22
7.2.6 Contact/helpdesk number ........................................... 22
7.3 Weather-dependent curve......................................................... 22
7.3.1 What is a weather-dependent curve? ......................... 22
7.3.2 2-points curve ............................................................. 23
7.3.3 Using weather-dependent curves ............................... 23
7.4 Menu structure: Overview installer settings............................... 24
8 Commissioning 25
8.1 Checklist before commissioning................................................. 25
8.2 Checklist during commissioning ................................................. 25
8.2.1 To check the minimum flow rate .................................. 25
8.2.2 To perform an air purge ............................................... 26
8.2.3 To perform a test run ................................................... 26
8.2.4 To perform an actuator test run ................................... 26
8.2.5 To perform an underfloor heating screed dryout.......... 26
9 Hand-over to the user 27
10 Technical data 28
10.1 Piping diagram: Indoor unit ........................................................ 28
10.2 Wiring diagram: Indoor unit ........................................................ 29
1 About this document
INFORMATION
This unit is a heating only model. Therefore, all references
to cooling in this document are NOT applicable.
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.

2 Specific installer safety instructions
Installation manual
3
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Daikin Altherma 3 R F
4P596803-1D – 2022.08
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
2 Specific installer safety
instructions
INFORMATION
This unit is a heating only model. Therefore, all references
to cooling in this document are NOT applicable.
Always observe the following safety instructions and regulations.
Installation site (see "4.1Preparing the installation site"[44])
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].
Special requirements for R32 (see "Special requirements for
R32"[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 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.
Opening and closing the unit (see "4.2Opening and closing the
unit"[45])
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
Mounting the indoor unit (see "4.3Mounting the indoor
unit"[46])
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6].
Piping installation (see "5Piping installation"[47])
WARNING
The field piping method MUST be in accordance with the
instructions from this manual. See "5 Piping
installation"[47].
Electrical installation (see "6Electrical installation"[49])
DANGER: RISK OF ELECTROCUTION
WARNING
Electrical wiring connection method MUST be in
accordance with the instructions from:
▪ This manual. See "6Electrical installation"[49].
▪ 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29].
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical
construction MUST comply with the applicable
legislation.
WARNING
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.

3 About the box
Installation manual
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WARNING
Make sure that the electrical wiring does NOT touch the
refrigerant gas pipe, which can be very hot.
a
a Refrigerant gas pipe
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9].
Commissioning (see "8Commissioning"[425])
WARNING
Commissioning method MUST be in accordance with the
instructions from this manual. See
"8Commissioning"[425].
WARNING
Air purging heat emitters or collectors. Before you
purge air from heat emitters or collectors, check if an error
or is displayed on the home pages 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
INFORMATION
This unit is a heating only model. Therefore, all references
to cooling in this document are NOT applicable.
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 Indoor unit
3.1.1 To remove the accessories from the
indoor unit
4× 4× 1×
1× 1× 1× 1×
e f ga b c d
1×
h
aGeneral safety precautions
bAddendum book for optional equipment
cIndoor unit installation manual
dOperation manual
eSealing rings for field-supplied shut-off valves (space
heating water circuit)
fSealing rings for field-supplied shut-off valves (domestic
hot water circuit)
gSealing tape for low voltage wiring intake
hMain user interface
3.1.2 To handle the indoor unit
Use the handles at the back and at the bottom to carry the unit.
b
a a
b
aHandles at the back of the unit
bHandles at the bottom of the unit. Carefully tilt the unit to
the back so that the handles become visible.
4 Unit installation
INFORMATION
This unit is a heating only model. Therefore, all references
to cooling in this document are NOT applicable.
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 Unit installation
Installation manual
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4P596803-1D – 2022.08
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
▪ Mind the following measurements guidelines:
Maximum refrigerant piping length(a) between indoor
unit and outdoor unit
20m
Minimum refrigerant piping length(a) between indoor
unit and outdoor unit
3m
Maximum height difference between indoor unit and
outdoor unit
20m
(a) Refrigerant piping length is the one-way length of liquid piping.
▪ Mind the following spacing installation guidelines:
≥300
≥600
≥ 500
(mm)
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 7]. It requires to
remove one or both side panels.
Special requirements for R32
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.
▪ 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).
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.
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.
4.2 Opening and closing the unit
4.2.1 To open the indoor unit
Overview
a
b
d
ce
aTop panel
bUpper front panel
cSwitch box cover
dFront panel
eHigh voltage switch box cover
Open
1Remove the top panel.
5×
T25
2Remove the upper front panel. Open the hinges at the top and
slide the top panel upwards.
2
1
1
3Remove the switch box cover.

4 Unit installation
Installation manual
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4P596803-1D – 2022.08
4×
T25
4If necessary, remove the front plate. This is, for example,
necessary in the following cases:
▪"4.2.2To lower the switch box on the indoor unit"[46]
▪"4.3.2To connect the drain hose to the drain"[47]
▪ When you need access to the high voltage switch box
2×
T25
5If you need access to the high voltage components, remove the
high voltage switch box cover.
4×
T25
4.2.2 To lower the switch box on the indoor unit
During the installation, you will need access to the inside of the
indoor unit. To have easier front access, put the switch box lower on
the unit as follows:
Prerequisite: The upper front panel and front panel have been
removed.
1Remove the fixing plate at the top of the unit.
2Tilt the switch box to the front and lift it out of its hinges.
1
2
2×
T25
3Place the switch box lower on the unit. Use the 2 hinges located
lower on the unit.
3
3
4.2.3 To close the indoor unit
1Close the cover of the switch box.
2Put the switch box back into place.
3Reinstall the top panel.
4Reinstall the side panels.
5Reinstall the front panel.
6Reinstall the upper front 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. Also
see "3.1.2To handle the indoor unit"[44].
2Connect the drain hose to the drain. See "4.3.2To connect the
drain hose to the drain"[47].
3Slide the indoor unit into position.
4Adjust the height of the leveling feet to compensate for floor
irregularities. The maximum allowed deviation is 1°.

5 Piping installation
Installation manual
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4P596803-1D – 2022.08
≤1°
NOTICE
Do NOT tilt the unit forwards:
0° 1° 1°
4.3.2 To connect the drain hose to the drain
Water coming from the pressure relief valve is collected in the drain
pan. The drain pan is connected to a drain hose inside the unit. You
must connect the drain hose to an appropriate drain according to the
applicable legislation. You can route the drain hose through the left
or right side panel.
1Remove one of the side panels.
2Cut out the rubber grommet.
3Pull the drain hose through the hole.
4Reattach the side panel. Ensure the water can flow through the
drain tube.
It is recommended to use a tundish to collect the water.
Option 1: Through the left side panel
1
3×
T25
3
2
Option 2: Through the right side panel
1
3×
T25
3
2
5 Piping installation
INFORMATION
This unit is a heating only model. Therefore, all references
to cooling in this document are NOT applicable.
5.1 Connecting refrigerant piping
See the installation manual of the outdoor unit for all guidelines,
specifications and installation instructions.
5.1.1 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.
b
a
aRefrigerant liquid connection
bRefrigerant gas connection
2Connect the gas stop valve from the outdoor unit to the
refrigerant gas connection of the indoor unit.
5.2 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.

5 Piping installation
Installation manual
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▪Water pressure – Domestic hot water. The maximum water
pressure 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 "5.3.1 To connect the water piping" [4 8]). The
minimum water pressure to operate is 1bar (=0.1MPa).
▪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 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
89°C (*)
75°C (*)
M
EXAMPLE
(*) Maximum temperature for piping and accessories
5.2.1 To check the water volume and flow rate
Minimum water volume
There are no requirements for the minimum water volume.
Minimum flow rate
Check that the minimum flow rate in the installation is guaranteed in
all conditions. This minimum flow rate is required during defrost
operation. For this purpose, it is recommended to use a differential
pressure bypass valve (field supply).
Minimum required flow rate
12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25].
5.3 Connecting water piping
5.3.1 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.
1Connect the space heating water in and out pipes to the indoor
unit.
2Connect the domestic hot water in and out pipes to the indoor
unit.
b1b2
a1a2
a1 Space heating/cooling – Water IN (screw connection, 1")
a2 Space heating/cooling – Water OUT (screw connection,
1")
b1 DHW – Cold water IN (screw connection, 3/4")
b2 DHW – Hot water OUT (screw connection, 3/4")
3Install the following components (field supply) on the cold water
inlet of the DHW tank:
g
c
b1b2
d a
*e
*f
a
aShut-off valve (recommended)
b1 DHW – Cold water IN (screw connection, 3/4")
b2 DHW – Hot water OUT (screw connection, 3/4")
cNon-return valve (recommended)
dPressure reducing valve (recommended)
*e Pressure relief valve (max. 10bar (=1.0MPa))
(mandatory)
*f Tundish (mandatory)
gExpansion vessel (recommended)
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.

6 Electrical installation
Installation manual
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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
Differential pressure bypass valve (field supply). We
recommend to install a differential pressure bypass valve
in the space heating water circuit. Mind the minimum flow
rate when adjusting the differential pressure bypass valve
setting.
NOTICE
Install air purge valves at all local high points.
5.3.2 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5].
2Cut out the rubber grommet on top of the unit, and remove the
stop. The recirculation connector is placed below the hole.
3Route the recirculation piping through the grommet and connect
it to the recirculation connector.
4Reattach the top panel.
5.3.3 To fill the water circuit
To fill the water circuit, use a field supply filling kit. Make sure you
comply with the applicable legislation.
INFORMATION
Make sure both air purge valves (one on the magnetic filter
and one on the backup heater) are open.
5.3.4 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.
5.3.5 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
INFORMATION
This unit is a heating only model. Therefore, all references
to cooling in this document are NOT applicable.
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
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.
WARNING
Make sure that the electrical wiring does NOT touch the
refrigerant gas pipe, which can be very hot.
a
a Refrigerant gas pipe
6.1 About electrical compliance
Only for the backup heater of the indoor unit
See "6.3.2To connect the backup heater power supply"[412].

6 Electrical installation
Installation manual
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4P596803-1D – 2022.08
6.2 Guidelines when connecting the
electrical wiring
Tightening torques
Indoor unit:
Item Tightening torque (N•m)
M4 (X1M, X2M, X5M) 1.2~1.5
M4 (earth) 1.2~1.5
6.3 Connections to the indoor unit
Item Description
Power supply (main) See "6.3.1To connect the main power
supply"[411].
Power supply (backup
heater)
See "6.3.2To connect the backup heater
power supply"[412].
User interface See "6.3.3To connect the user
interface"[413].
Shut-off valve See "6.3.4To connect the shut-off
valve"[413].
Electricity meters See "6.3.5To connect the electricity
meters"[414].
Domestic hot water
pump
See "6.3.6To connect the domestic hot
water pump"[414].
Alarm output See "6.3.7To connect the alarm
output"[415].
Space cooling/heating
operation control
See "6.3.8To connect the space cooling/
heating ON/OFF output"[415].
Changeover to
external heat source
control
See "6.3.9To connect the changeover to
external heat source"[416].
Power consumption
digital inputs
See "6.3.10To connect the power
consumption digital inputs"[416].
Safety thermostat See "6.3.11To connect the safety
thermostat (normally closed
contact)"[417].
Room thermostat
(wired or wireless)
See below table.
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:
▪ [A.2.1.7] Unit control method
▪ [A.2.2.4] Contact type main
For the additional zone:
▪ [A.2.2.5] Contact type add.
Item Description
Heat pump convector There are different controllers and
setups possible for the heat pump
convectors.
For more information, see:
▪ Installation manual of the heat
pump convectors
▪ Installation manual of the heat
pump convector options
▪ Addendum book for optional
equipment
Wires: 4×0.75mm²
Maximum running current: 100mA
For the main zone:
▪ [A.2.1.7] Unit control method
▪ [A.2.2.4] Contact type main
For the additional zone:
▪ [A.2.2.5] Contact type add.
Remote outdoor
sensor
See:
▪ Installation manual of the remote
outdoor sensor
▪ Addendum book for optional
equipment
Wires: 2×0.75mm²
[A.2.2.B]=1 (External
sensor=Outdoor sensor)
[A.6.5] Ext amb. sensor offset
[A.6.4] Averaging time
Remote indoor sensor See:
▪ Installation manual of the remote
indoor sensor
▪ Addendum book for optional
equipment
Wires: 2×0.75mm²
[A.2.2.F.5]=2 (External
sensor=Room sensor)
[A.3.2.3] Ext. room sensor offset
LAN adapter See:
▪ Installation manual of the LAN
adapter
▪ Addendum book for optional
equipment
Wires: 2×(0.75~1.25mm²). Must be
sheathed.
Maximum length: 200m
See "LAN adapter – System
requirements"[411]
for room thermostat (wired or wireless):
In case of… See…
Wireless room thermostat ▪ Installation manual of the wireless
room thermostat
▪ Addendum book for optional
equipment

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In case of… See…
Wired room thermostat
without multi-zoning base
unit
▪ Installation manual of the wired room
thermostat
▪ Addendum book for optional
equipment
Wired room thermostat
with multi-zoning base unit
▪ Installation manual of the wired room
thermostat (digital or analogue) +
multi-zoning base unit
▪ Addendum book for optional
equipment
▪ In this case:
▪ You need to connect the wired
room thermostat (digital or
analogue) to the multi-zoning base
unit
▪ You need to connect the multi-
zoning base unit to the outdoor unit
▪ For cooling/heating operation, you
also need to implement a relay
(field supply, see addendum book
for optional equipment)
LAN adapter – System requirements
The requirements posed on the Daikin Altherma system depend on
the LAN adapter application/system layout (app control):
Item Requirement
LAN adapter software It is recommended to ALWAYS keep the
LAN adapter software up-to-date.
Unit control method On the user interface, make sure to set
[A.2.1.7]=2 (Unit control method = RT
control)
6.3.1 To connect the main power supply
1Open the following (see "4.2.1To open the indoor unit"[45]):
1Top panel
1
2
3
2Upper front panel
3Upper switch box cover
2Connect the main power supply.
In case of normal kWh rate power supply
Interconnection
cable (=main
power supply)
Wires: (3+GND)×1.5mm²
—
A
123
a
B
A
B
1 2 3
X2M
X1A
X11YA X11YB
X11Y
X1M
a
aInterconnection cable (=main power supply)
In case of preferential kWh rate power supply
Interconnection
cable (=main
power supply)
Wires: (3+GND)×1.5mm²
Normal kWh rate
power supply
Wires: 1N
Maximum running current: 6.3A
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.
[A.2.2.E.3] Preferential kWh rate
Connect X11Y to X11YB.

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A
109
S1S
NL
56
1N~, 50 Hz,
230 V AC, 6.3 A
123
a b c
B
A
B
5 6
1 2 3
X2M
X5M
9 10
X1A
X11YA X11YB
X11Y
X1M
a b c
aInterconnection cable (=main power supply)
bNormal kWh rate power supply
cPreferential power supply contact
3Fix the cables with cable ties to the cable tie mountings.
INFORMATION
In case of preferential kWh rate power supply, connect
X11Y to X11YB. The necessity of separate normal kWh
rate power supply to indoor unit (b) X2M/5+6 depends on
the type of preferential kWh rate power supply.
Separate connection to the indoor unit is required:
▪ if 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.
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.
6.3.2 To connect the backup heater power
supply
Backup heater
type
Power supply Wires
*3V 1N~ 230V 2+GND
—
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.
Make sure that the power supply is in accordance with the backup
heater capacity, as listed in the table below.
Backup
heater type
Backup
heater
capacity
Power
supply
Maximum
running
current
Zmax
*3V 3kW 1N~230V 13A(a) 0.34Ω
(a) This equipment complies with EN/IEC61000‑3‑11 (European/
International Technical Standard setting the limits for voltage
changes, voltage fluctuations and flicker in public low-voltage
supply systems for equipment with rated current ≤75A) provided
that the system impedance Zsys is less than or equal to Zmax at the
interface point between the user's supply and the public system. It
is the responsibility of the installer or user of the equipment to
ensure, by consultation with the distribution network operator if
necessary, that the equipment is connected only to a supply with
a system impedance Zsys less than or equal to Zmax.
Connect the power supply of the backup heater as follows:
X6M
F1B
Q1DI
a
b
aFactory-mounted cable connected to the contactor of the
backup heater, inside the switch box (K1M)
bField wiring (see table below)
Model (power
supply)
Connections to backup heater power
supply
*3V (1N~230V)
1N~, 50 Hz
230 V AC
SWB2
Q1DI
1
2
3
4
F1B
I I
L N
X6M
2
1
K1M
4
3
BRN BLU
F1B Overcurrent fuse (field supply). Recommended fuse:
2‑pole; 16A; curve 400V; tripping class C.
K1M Contactor (in the lower switch box)
Q1DI Earth leakage circuit breaker (field supply)
SWB Switch box
X6M Terminal (field supply)

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NOTICE
Do NOT cut or remove the backup heater power supply
cable.
6.3.3 To connect the user interface
▪ If you use 1 user interface, you can install it at the indoor unit (for
control close to the indoor unit), or in the room (when used as
room thermostat).
▪ If you use 2 user interfaces, you can install 1 user interface at the
indoor unit (for control close to the indoor unit) + 1 user interface
in the room (used as room thermostat).
Wires: 2 (per user interface)×(0.75~1.25mm²)
Maximum length: 200m
[A.2.1.7] Unit control method
[A.2.1.B] User interface location
[A.3.2.2] Room temp. offset
1Open the following (see "4.2.1To open the indoor unit"[45]):
1Top panel
1
2
3
2Upper front panel
3Upper switch box cover
2Connect the user interface cable to the indoor unit. Fix the
cable with cable ties to the cable tie mountings.
A
ab
B
A
B
11 12
X5M P2 P1
aMain user interface: Required for operation. Delivered
with the unit as accessory.
bOptional user interface
3Insert a screwdriver into the slots underneath the user interface
and carefully separate the faceplate from the wallplate. The
PCB is mounted in the faceplate of the user interface. Be
careful NOT to damage it.
4Fix the wallplate of the user interface to the wall.
5Connect as shown in A, B, C or D:
A From the rear
ba
PCB
1×
B From the left
a
PCB
b
1×
C From the top
a
b
PCB
b
1×
D From the top centre
a
PCB
b
b
1×
aNotch this part for the wiring to pass through with nippers
etc.
bSecure the wiring to the front part of the casing using the
wiring retainer and clamp.
6Reinstall the faceplate onto the wallplate. Be careful NOT to
pinch the wiring when attaching the frontplate to the unit.
6.3.4 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
[A.3.1.1.6] Shut-off valve
1Open the following (see "4.2.1To open the indoor unit"[45]):
1Top panel
1
2
3
2Upper front panel
3Upper 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.

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A
M2S
B
A
B
21 28
X2M
B
21 29
X2M
NO
NC
3Fix the cable with cable ties to the cable tie mountings.
6.3.5 To connect the electricity meters
Wires: 2 (per meter)×0.75mm²
Electricity meters: 12VDC pulse detection (voltage supplied
by PCB)
[A.2.2.8] External kWh meter (meter 1)
[A.2.2.9] External kWh meter (meter 2)
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5]):
1Top panel
1
2
3
2Upper front panel
3Upper switch box cover
2Connect the electricity meters cable to the appropriate terminals
as shown in the illustration below.
A
6543
S3S S2S
B
A
B
X5M
3 4 5 6
3Fix the cable with cable ties to the cable tie mountings.
6.3.6 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)
[A.2.2] Options > [A.2.2.A] DHW pump
[7.3] Set schedules > [7.3.7] DHW pump
1Open the following (see "4.2.1To open the indoor unit"[45]):
1Top panel
1
2
3
2Upper front panel
3Upper switch box cover
2Connect the domestic hot water pump cable to the appropriate
terminals as shown in the illustration below.

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A
1~
MM2P
B
A
B
1 2
X2M
3Fix the cable with cable ties to the cable tie mountings.
6.3.7 To connect the alarm output
Wires: (2+1)×0.75mm²
Maximum load: 0.3A, 250VAC
[A.2.2.6.3] Alarm output
1Open the following (see "4.2.1To open the indoor unit"[45]):
1Top panel
1
2
3
2Upper front panel
3Upper switch box cover
2Connect the alarm output cable to the appropriate terminals as
shown in the illustration below.
79
YCY1
X2M
12
3
A4P
1+2 Wires connected to the alarm
output
3Wire between X2M and A4P
A4P Installation of EKRP1HBAA is
required.
A
Y17
B
A
B
7 9
X2M
A4P
Y1YC
X1M
ab
aInstallation of EKRP1HBAA is required.
bPrewiring between X2M/7+9 and Q1L (=thermal
protector backup heater). Do NOT change.
3Fix the cable with cable ties to the cable tie mountings.
6.3.8 To connect the space cooling/heating ON/
OFF output
Wires: (2+1)×0.75mm²
Maximum load: 0.3A, 250VAC
—
1Open the following (see "4.2.1To open the indoor unit"[45]):
1Top panel
1
2
3
2Upper front panel
3Upper switch box cover
2Connect the space cooling/heating ON/OFF output cable to the
appropriate terminals as shown in the illustration below.
79
YCY2
X2M
12
3
A4P
1+2 Wires connected to the space
cooling/heating ON/OFF
output
3Wire between X2M and A4P
A4P Installation of EKRP1HBAA is
required.

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A
Y27
B
A
B
7 9
X2M
A4P
Y2YC
X1M
ab
aInstallation of EKRP1HBAA is required.
bPrewiring between X2M/7+9 and Q1L (=thermal
protector backup heater). Do NOT change.
3Fix the cable with cable ties to the cable tie mountings.
6.3.9 To connect the changeover to external
heat source
INFORMATION
Bivalent is only possible in case of 1 leaving water
temperature zone with:
▪ room thermostat control, OR
▪ external room thermostat control.
Wires: 2×0.75mm²
Maximum load: 0.3A, 250VAC
Minimum load: 20mA, 5VDC
[A.2.2.6.1] Ext. backup heat src
1Open the following (see "4.2.1To open the indoor unit"[45]):
1Top panel
1
2
3
2Upper front panel
3Upper switch box cover
2Connect the changeover to external heat source cable to the
appropriate terminals as shown in the illustration below.
A
X1X2
LN
B
A
B
A4P
X2M
X1
a
X2
aInstallation of EKRP1HBAA is required.
3Fix the cable with cable ties to the cable tie mountings.
6.3.10 To connect the power consumption digital
inputs
Wires: 2 (per input signal)×0.75mm²
Power limitation digital inputs: 12VDC / 12mA detection
(voltage supplied by PCB)
[A.6.3] Pwr consumpt. control
1Open the following (see "4.2.1To open the indoor unit"[45]):
1Top panel
1
2
3
2Upper front panel
3Upper switch box cover
2Connect the power consumption digital inputs cable to the
appropriate terminals as shown in the illustration below.

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1245
S6S S7S S8S
S9S
3
A
B
A
B
A8P
X801M
a
1 2 3 4 5
aInstallation of EKRP1AHTA is required.
3Fix the cable with cable ties to the cable tie mountings.
6.3.11 To connect the safety thermostat
(normally closed contact)
Wires: 2×0.75mm²
Maximum length: 50m
Safety thermostat 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.
[A.2.1.6]=3 (Forced off contact = Thermostat)
1Open the following (see "4.2.1To open the indoor unit"[45]):
1Top panel
1
2
3
2Upper front panel
3Upper switch box cover
2Connect the safety thermostat (normally closed) cable to the
appropriate terminals as shown in the illustration below.
A
10
Q4L
9
B
A
B
X5M
9 10
3Fix the cable with cable ties to the cable tie mountings.
NOTICE
Make sure to select and install the safety thermostat
according to the applicable legislation.
In any case, to prevent unnecessary tripping of the safety
thermostat, we recommend the following:
▪ The safety thermostat is automatically resettable.
▪ The safety thermostat has a maximum temperature
variation rate of 2°C/min.
▪ There is a minimum distance of 2m between the safety
thermostat and the 3‑way valve.
INFORMATION
ALWAYS configure the safety thermostat after it is
installed. Without configuration, the unit will ignore the
safety thermostat contact.
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.
6.4 After connecting the electrical
wiring to the indoor unit
To prevent water ingress to the switch box, seal the low voltage
wiring intake using the sealing tape (delivered as accessory).

7 Configuration
Installation manual
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Without low voltage cables With low voltage cables
7 Configuration
INFORMATION
This unit is a heating only model. Therefore, all references
to cooling in this document are NOT applicable.
7.1 Overview: Configuration
This chapter describes what you have to do and know to configure
the system after it is installed.
NOTICE
This chapter explains only the basic configuration. For
more detailed explanation and background information,
see the installer reference guide.
Why
If you do NOT configure the system correctly, it might NOT work as
expected. The configuration influences the following:
▪ The calculations of the software
▪ What you can see on and do with the user interface
How
You can configure the system via the user interface.
▪First time – Quick wizard. When you turn ON the user interface
for the first time (via the indoor unit), a quick wizard starts to help
you configure the system.
▪Afterwards. If necessary, you can make changes to the
configuration afterwards.
INFORMATION
When the installer settings are changed, the user interface
will request to confirm. When confirmed, the screen will
shortly turn OFF and "busy" will be displayed for several
seconds.
Accessing settings – Legend for tables
You can access the installer settings using two different methods.
However, NOT all settings are accessible via both methods. If so,
the corresponding table columns in this chapter are set to N/A (not
applicable).
Method Column in tables
Accessing settings via the breadcrumb in the
menu structure.
#
For example:
[A.2.1.7]
Accessing settings via the code in the
overview settings.
Code
For example: [C-07]
See also:
▪"To access the installer settings"[418]
▪"7.4Menu structure: Overview installer settings"[424]
7.1.1 To change the user permission level
Default user permission level
The default user permission level is End user.
To set the user permission level to End user
1Press for more than 4 seconds.
Result: Your user permission level is now End user. The user
interface displays the default home page.
To set the user permission level to Advanced end user
1Go to the main menu or any of its submenus: .
2Press for more than 4seconds.
Result: Your user permission level is now Adv. end user. The
user interface displays additional information and a "+" is added to
the menu title. The user permission level stays in Adv. end user
until manually set otherwise.
To set the user permission level to Installer
Prerequisite: Your user permission level is Adv. end user.
1Go to [6.4]: > Information > User permission level.
2Press for more than 4seconds.
Result: Your user permission level is now Installer. The
home pages display .
INFORMATION
The Installer permission level switches automatically
back to End user in the following cases:
▪ If you press again for more than 4seconds, or
▪ If you do NOT press any button for more than 1hour
7.1.2 To access the most used commands
To access the installer settings
1Set the user permission level to Installer.
2Go to [A]: > Installer settings.
To access the overview settings
1Set the user permission level to Installer.
2Go to [A.8]: > Installer settings > Overview
settings.
To modify an overview setting
Example: Modify [1‑01] from 15 to 20.
1Go to [A.8]: > Installer settings > Overview
settings.
2Go to the corresponding screen of the first part of the setting (in
this example [1-01]) by using the and button.
INFORMATION
An additional 0-digit is added to the first part of the setting
when you access the codes in the overview settings.
Example: [1‑01]: "1" will result in "01".
01
02
06
0a
0e
00 03
07
0b
0f
0000
04
08
0c
00 01
05
09
0d
15
Overview settings
Confirm Adjust Scroll
3Go to the corresponding second part of the setting (in this
example [1-01]) by using the and button.

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01
02
06
0a
0e
00 03
07
0b
0f
0000
04
08
0c
00 01
05
09
0d
15
Overview settings
Confirm Adjust Scroll
Result: The value to be modified is now highlighted.
4Modify the value by using the and button.
01
02
06
0a
0e
00 03
07
0b
0f
0000
04
08
0c
00 01
05
09
0d
20
Overview settings
Confirm Adjust Scroll
5Repeat previous steps if you have to modify other settings.
6Push to confirm the modification of the parameter.
7At installer settings menu, press to confirm the settings.
Installer settings
The system will restart.
Confirm Adjust
Cancel
OK
Result: The system will restart.
7.2 Basic configuration
7.2.1 Quick wizard: Language / time and date
# Code Description
[A.1] N/A Language
[1] N/A Time and date
7.2.2 Quick wizard: Standard
Space heating/cooling settings
# Code Description
[A.2.1.7] [C-07] Unit temperature control:
▪ 0 (LWT control): Unit operation is
decided based on the leaving water
temperature.
▪ 1 (Ext RT control): Unit operation is
decided by the external thermostat.
▪ 2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
[A.2.1.B] N/A Only if there are 2user interfaces:
User interface location:
▪At unit
▪In room
[A.2.1.8] [7-02] Number of water temperature zones:
▪ 0 (1 LWT zone): Main
▪ 1 (2 LWT zones): Main + additional
# Code Description
[A.2.1.9] [F-0D] Pump operation:
▪ 0 (Continuous): Continuous pump
operation, regardless of thermo ON or
OFF condition.
▪ 1 (Sample): When thermo OFF
condition occurs, the pump runs every
5 minutes and the water temperature
is checked. If the water temperature is
below target, unit operation can start.
▪ 2 (Request): Pump operation based
on request. Example: Using a room
thermostat and thermostat creates
thermo ON/OFF condition.
7.2.3 Quick wizard: Options
Domestic hot water settings
# Code Description
[A.2.2.1] [E-05] DHW operation:
Can the system prepare domestic
hot water?
▪ 0 (No): NOT installed
▪ 1 (Yes): Installed
[A.2.2.3] [E-07] DHW tank type:
▪ 1 (Type 2): The backup heater will
also be used for domestic hot water
heating.
Range: 0~6.
Note: Values 0 and 2~6 are not
applicable for this setting. Moreover, if
the setting is set to 6, an error code will
appear and the system will NOT operate.
[A.2.2.A] [D-02] Domestic hot water pump:
▪ 0 (No): NOT installed
▪ 1 (Secondary rtrn): Installed for
instant hot water
▪ 2 (Disinf. shunt): Installed for
disinfection
See also illustrations below.
Domestic hot water pump installed for …
… instant hot water
a
b
c
d
aCold water
bShower
cDomestic hot water pump
dRecirculation connection
… disinfection

7 Configuration
Installation manual
20
EHFH03S18D
Daikin Altherma 3 R F
4P596803-1D – 2022.08
a
b
c
d
e
aCold water
bShower
cDomestic hot water pump
dHeater element
eNon-return valve
Thermostats and external sensors
NOTICE
If an external room thermostat is used, the external room
thermostat will control the room frost protection. However,
the room frost protection is only possible if the leaving
water temperature control on user interface of the unit is
turned ON.
# Code Description
[A.2.2.4] [C-05] External room thermostat for the main
zone:
▪ 1 (Thermo ON/OFF): When the used
external room thermostat or
heatpump convector can only send a
thermo ON/OFF condition.
▪ 2 (H/C request): When the used
external room thermostat can send a
separate heating/cooling thermo ON/
OFF condition.
[A.2.2.5] [C-06] External room thermostat for the
additional zone:
▪ 0: N/A
▪ 1 (Thermo ON/OFF): When the used
external room thermostat or
heatpump convector can only send a
thermo ON/OFF condition.
▪ 2 (H/C request): When the used
external room thermostat can send a
separate heating/cooling thermo ON/
OFF condition.
[A.2.2.B] [C-08] External sensor:
▪ 0 (No): NOT installed.
▪ 1 (Outdoor sensor): Connected to
PCB measuring the outdoor
temperature.
▪ 2 (Room sensor): Connected to PCB
measuring the indoor temperature.
Digital I/O PCB
# Code Description
[A.2.2.6.1] [C-02] External backup heater source:
▪ 0 (No): None
▪ 1 (Bivalent): Gas, oil boiler
▪ 2: N/A
▪ 3: N/A
[A.2.2.6.2] [D-07] Solar pump station kit:
▪ 0 (No): NOT installed
▪ 1 (Yes): Installed
[A.2.2.6.3] [C-09] Alarm output on optional EKRP1HBAA
PCB:
▪ 0 (Normally open): The alarm
output will be powered when an
alarm occurs. By setting this value, a
distinction is made between the
detection of an alarm, and the
detection of a power failure.
▪ 1 (Normally closed): The alarm
output will NOT be powered when an
alarm occurs.
Also see table below:Alarm output
logic.
[A.2.2.6.4] [F-04] Bottom plate heater
▪ 0 (No): NOT installed
▪ 1 (Yes): Installed
Alarm output logic
[C-09] Alarm No alarm No power
supply to unit
0 (default) Closed output Open output Open output
1 Open output Closed output
Demand PCB
# Code Description
[A.2.2.7] [D-04] Demand PCB
Indicates if the optional demand PCB is
installed.
▪ 0 (No)
▪ 1 (Pwr consmp ctrl)
Energy metering
# Code Description
[A.2.2.8] [D‑08] Optional external kWh meter1:
▪ 0 (No): NOT installed
▪ 1: Installed (0.1pulse/kWh)
▪ 2: Installed (1pulse/kWh)
▪ 3: Installed (10pulse/kWh)
▪ 4: Installed (100pulse/kWh)
▪ 5: Installed (1000pulse/kWh)
[A.2.2.9] [D‑09] Optional external kWh meter2:
▪ 0 (No): NOT installed
▪ 1: Installed (0.1pulse/kWh)
▪ 2: Installed (1pulse/kWh)
▪ 3: Installed (10pulse/kWh)
▪ 4: Installed (100pulse/kWh)
▪ 5: Installed (1000pulse/kWh)