Daikin EKOMBG22ABV1 User manual

EKOMBG22ABV1
EKOMBG28ABV1
EKOMBG33ABV1
Daikin Europe NV
Installation instructions
Installationsanleitung
Instructions d'installation
Installatievoorschrift
Istruzioni d'installazione
Instrukcje instalacji
Instruções de instalação
Οδηγίες εγκατάστασης
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Daikin Europe NV 3
TABLE OF CONTENTS
1Safety instructions 5
2Unit description 5
2.1 General............................................................................................................................................................................................5
2.2 Functioning......................................................................................................................................................................................5
2.3 Operating modes.............................................................................................................................................................................5
2.4 PC Interface .................................................................................................................................................................................... 7
2.5 Test programs .................................................................................................................................................................................7
3Main components 9
3.1 Accessories ...................................................................................................................................................................................10
4Installation 11
4.1 Installation measurements ............................................................................................................................................................11
4.2 Installation space...........................................................................................................................................................................13
4.3 Assembly.......................................................................................................................................................................................14
5Connecting 16
5.1 Connecting CH installation ............................................................................................................................................................ 16
5.2 Connecting DHW installation.........................................................................................................................................................18
5.3 Connecting electronically ..............................................................................................................................................................19
5.4 Connect room thermostat..............................................................................................................................................................20
5.5 Connecting gas .............................................................................................................................................................................21
5.6 Flue and air supply duct ................................................................................................................................................................22
5.7 Outlet systems...............................................................................................................................................................................23
5.8 Flue material..................................................................................................................................................................................24
5.9 Connection to a flue system without air inlet (B23, B33).............................................................................................................. 26
5.10 Connection to a sealed flue system. ............................................................................................................................................. 27
6Commissioning the unit and the Installation 35
6.1 Filling and air purge of unit and installation ................................................................................................................................... 35
6.2 Commissioning the unit ................................................................................................................................................................. 36
6.3 Switching off the unit .....................................................................................................................................................................37
7Setting and adjustment 38
7.1 Direct via operating panel..............................................................................................................................................................38
7.2 Parameter settings via the service code .......................................................................................................................................39
7.3 Setting maximum CH power..........................................................................................................................................................41
7.4 Set pump capacity.........................................................................................................................................................................41
7.5 Weather dependent regulation ...................................................................................................................................................... 41
7.6 Conversion to different type of gas................................................................................................................................................42
7.7 Gas/air regulation ..........................................................................................................................................................................42
7.8 Setting gas/air regulation...............................................................................................................................................................43
8Malfunctions 45
8.1 Show last malfunction ................................................................................................................................................................... 45
8.2Malfunction codes .........................................................................................................................................................................45
8.3 Other faults....................................................................................................................................................................................46
9Maintenance 49
9Technical specifications 51
9.1Technical Product Fiche in accordance to CELEX-32013R0811.................................................................................................. 52
9.2 Electrical diagram..........................................................................................................................................................................53
9.3 NTC resistances............................................................................................................................................................................54
10 Warranty conditions 55
© 2022 Daikin Europe NV
All rights reserved.
The information provided applies to the product in its standard version. Daikin Europe NV can therefore not be held liable for any damages arising from any
specifications of the product which deviate from the standard version. The available information has been compiled with the greatest possible care, but Daikin Europe
NV can not be held liable for any mistakes in the information, or for any consequences thereof. Daikin Europe NV cannot be held liable for any damage arising from
work carried out by third parties.
Subject to change.

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These installation instructions
With these installation instructions, you can safely assemble, install and maintain the
unit. Carefully follow the instructions.
In case of any doubt, please contact the manufacturer.
Keep the installation instructions near the unit.
Abbreviations and terms used
Description
To be referred to as
Daikin EKOMBG22ABV1, EKOMBG28ABV1 and
EKOMBG33ABV1 wall-mounted gas boiler.
Unit
Unit with piping for central heating
CH installation
System with pipes for domestic hot water
DHW installation
Symbols
The following symbols are used in this manual:
CAUTION
Procedures which - if they are not carried out with the
necessary care - may cause damage to the product, the
surroundings, the environment or injury.
IMPORTANT
Procedures and/or instructions which, if they are not followed,
will have a negative effect on the functioning of the unit.
Service and technical support for the installer
For information about specific settings, installation, maintenance and repair work, as an
installer, please contact your local Daikin dealer.
Identification of the product
You will find the unit details on the data plate on the bottom of the unit.
The data plate contains, beside the supplier information and the boiler specification
(boiler type and model name) the following information:
******-yymm******
Product code-Serial No.
YY= year of production, mm = month of production
PIN
Product Identification Number
Data related to Domestic Hot Water
Data related to Central Heating
Information regarding electrical power supply
Voltage, mains frequency, elmax, IP-class)
PMS
Permissible overpressure in CH circuit in bar
PWS
Permissible overpressure in DHW circuit in bar
Qn HS
Input related to gross caloric value in kilowatts
Qn Hi
Input related to net caloric value in kilowatts
Pn
Output in kilowatts
BE, DE, GR, IT,
PT, FR, PL
Countries of Destination (EN 437)
I2E(s), I2H,
IIELL3P, II2H3P,
II2Esi3P
Approved unit categories (EN 437)
G20-20 mbar
G25-25 mbar
Gas group and gas connection pressure as set at the
factory (EN 437)
B23, …. C93(x)
Approved flue gas category (EN 15502)
Tmax
Max. flow temperature in °C
IPX4D
Electrical protection class

Daikin Europe NV 5
1SAFETY INSTRUCTIONS
The manufacturer Daikin accepts no liability for damage or injury caused by the failure
to (strictly) observe the safety instructions, or negligence during the installation of the
Daikin EKOMBG*ABV1 wall-mounted gas boiler and any associated accessories.
Depending on the year of construction, an Daikin EKOMBG*ABV1 may contain a part
which contains ceramic fibres. This can apply to the gasket of the inspection glass and
the isolation package of the front plate. Always use the recommended personal
protective equipment when working with ceramic fibres.
IMPORTANT
This product is intended for domestic use only.
This device is not intended for use by people (including children) with reduced
physical, sensory or mental abilities, or lack of experience and knowledge, unless they
are given supervision or instructions on the use of the device by a person who is
responsible for their safety.
The instructions are stated separately for the various disciplines.
The entire installation must meet the applicable local technical and (safety)
instructions, for the gas installation, the electrical installation, smoke extraction
installation, drinking water installation, and central heating installation.
2UNIT DESCRIPTION
2.1 General
The Daikin EKOMBG*ABV1 wall-mounted gas boiler is a closed unit. The unit is
intended to provide heat to the water of a CH-installation and the domestic hot water
installation.
The air supply and the combustion gas outlet of the EKOMBG*ABV1 can be connected
to the unit by two separate pipes, or by a concentric connection. The unit was tested in
combination with the combi feedthrough, but the unit may also be connected to combi
feedthroughs which meet the universal test standards for combi feedthroughs.
The unit can be connected to an assembly bracket if required, a frame with top
connection, and various installation sets. These are provided separately.
The Daikin EKOMBG*ABV1 wall-mounted gas boilers have the CE quality mark,
electrical protection class IPX4D.
It is possible to use the unit solely for warm water, or solely for heating. The system
which is not in use, does not need to be connected (see par. 7.2).
The unit is delivered for natural gas (G25) as a standard. On request, the unit can also
be provided for propane (G31).
2.2 Functioning
The Daikin EKOMBG*ABV1 wall-mounted gas boiler is a modulating high-efficiency
boiler. This means that the power is modulated to suit the required heat demand. In the
aluminum heat exchanger two separate copper circuits are integrated.
The separate circuits for CH and warm water allow the heating and warm water supply
to function independently. The hot water supply takes precedence over the heating.
Both cannot work at the same time.
The unit is fitted with an electronic boiler controller machine, which operates the fan
and the modulating pump at every heat requirement of the heating or the warm water
supply, opens the gas valve, ignites the boiler controller, and continuously monitors
and regulates the flame, depending on the requested power. The pump is only
operated during a heat request from the heating, depending on the requested power.
2.3 Operating modes
The operating mode of the unit is indicated by means of a code on the service display
of the operating panel.
- Off
The unit is not in operation, but is connected to the electricity supply. No response is
given to requests for domestic hot water or CH water. The unit frost protection is
active. This means that the pump will start running and the exchanger will be heated
up if the temperature of the water in the system drops too far.

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If the frost protection intervenes, the code 7 will be displayed (heating up exchanger).
The pressure in the CH installation can also be read from the temperature display in this
operating mode (in bar).
Standby
The LED at the key is lit and possibly one of the LEDs of the tap comfort function.
The unit is ready to respond to a request for CH or tap water.
0 Post-running CH
After the end of the CH-operation, the pump will post-run. The post-pumping time is set
to the value in par. 7.2 in its factory settings. This setting can be changed. In addition to
this, the pump will run automatically 1 time per 24 hours, for 10 seconds, in order to
prevent it from getting stuck. This automatic switching on of the pump takes place at the
time of the last heating request. In order to change this, the room thermostat needs to be
set higher for a moment, at the required time of day.
1 Requested temperature reached
The boiler controller may temporarily block the heat request. The boiler controller will
then be stopped. The block occurs because the required temperature has been
reached. When the temperature has sufficiently decreased, the block will be lifted.
2 Selftest
Once every 24 hours, the boiler controller tests the connected sensors. During the test,
the controller will not carry out any other tasks.
3 Ventilating
When the unit is started, the fan is first brought up to its correct start rpm. When the
start rpm is reached, the boiler controller will be ignited. Code 3 is also visible when
there is post-fanning after the boiler controller is stopped.
4 Igniting
When the fan has reached the start rpm, the boiler controller will be ignited by means of
electrical sparks. During the ignition, code 4 is displayed. If the boiler controller does
not ignite, a new attempt will be made after approximately 15 seconds. If after 4 ignition
attempts, the boiler controller has still not been ignited, the controller will go into down-
time.
5 CH-operation
An on/off thermostat, an OpenTherm thermostat, an outdoor sensor or a combination
thereof can be connected to the controller (see par. 9.2)
When there is a heat request from a thermostat, after the fan has started running (code
3 ), the ignition will take place (code 4 ) followed by the CH operating mode (code 5 ).
During CH operation, the rpm of the fan and therefore the power of the unit can be
adjusted so the temperature of the CH water to the required CH supply temperature can
be controlled. If an on/off thermostat has been connected, this will be the CH supply
temperature set on the display. In case of an OpenTherm or wireless thermostat, the
required CH supply temperature is determined by the thermostat. In case of an outdoor
sensor, the required CH supply temperature is determined by the fuel line programmed
in the boiler controller. For the last two situations, the temperature set on the display is
the maximum.
During CH operation, the requested CH supply temperature will be displayed on the
operating panel.
The CH supply temperature can be set between 30 and 90°C (see par. 7.1). Caution:
for a low temperature system, a lower maximum setting may be required than the
standard setting of 80°C.
You can press the service button during CH operation to read the actual CH supply
temperature.
If the tap comfort function is switched on (see code 7 ), an OpenTherm heat request of
less than 40 degrees will be generated.
6 Domestic hot water operation
The hot water supply takes precedence over the heating. If the flow switch senses a
request for more than 2 l/min of domestic hot water, any CH requests will be
interrupted. After the fan has switched on (code 3 ) and there has been an ignition
(code 4 ), the controller will switch to domestic water operation (code 6 ). During

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domestic hot water operation, the rpm of the fan, and therefore the power of the unit, is
controlled by the controller on the basis of the set tap water temperature.
The control system ensures the tap water temperature is correct. The water
temperature can be set between 40°C and 65°C (see par. 7.1).
The set tap water temperature is displayed on the operation panel. The standard setting
is 60°C. You can press the service button during tap water operation to read the actual
tap water temperature.
7 Heating up unit
In order to provide a fast supply of domestic hot water, a so-called tap comfort function
has been installed in the unit. This function keeps the heat exchanger at the right
temperature (it can be set, see par. 7.2). The tap comfort function has the following
settings:
•On: ( LED on) The tap comfort function of the unit is continuously switched on.
The unit always immediately provides warm water.
•Eco: ( LED on) The tap comfort function of the unit is self-learning. The unit will
adjust to the usage pattern of the domestic hot water. This means the heat
exchanger will not be kept warm during the night or during longer absences.
•Off: (Both LEDs off) The heat exchanger is not kept warm which means the supply
of domestic hot water takes a bit of time. If there is no need for fast delivery of
domestic hot water, the tap comfort function can be switched off.
In the settings "on" and "eco" , the unit meets the requirements of the Gaskeur
[Gas Inspection] CW standards.
2.4 PC Interface
The boiler controller is provided with an interface for a PC. A PC can communicate with
the CH boiler by means of a special dongle, and the associated software. This facility
enables you to follow the behavior of the boiler controller, the unit and the heat
installation over a long period.
2.5 Test programs
There is an option in the boiler controller, to bring the unit into a test status.
Activating a test program, will switch on the unit with a set fan rotations per minute,
without the control functions intervening.
The safety functions do remain active.
The test program is ended by pressing and simultaneously.
Test programs
Description of program
Button combination
Display reading
Burner on with minimum DHW
capacity (see parameter d par. 7.2)
and
"L"
Burner on with set maximum CH
power (see parameter 3 par. 7.2)
and (1x)
"h"
Burner on with maximum DHW power
(see parameter 3 par. 7.2)
and (2x)
"H"
Switching off test program
and
Current operation
situation
During test mode the following data can be read :
• By pressing the + button continuously in the display the CH water pressure is shown.
• By pressing the - button continuously in the display the ionisation current is shown.
2.5.1 Frost protection
•The unit is fitted with frost protection in order to prevent it from
freezing. If the temperature of the heat exchanger drops too low,
the pump will start running until the temperature of the heat
exchanger is sufficiently high. If the frost protection intervenes, code
7 will be displayed (heating up exchanger).
•If the installation (or a part thereof) can freeze, the coldest place
should be fitted with an (external) frost thermostat on the return pipe.
This must be connected in accordance with the electrical diagram
(see par. 9.2).
Note
When the unit is switched off ( - on the service display), the unit frost protection will
remain active, however a heat request from an (external) frost thermostat will be ignored.

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3MAIN COMPONENTS
A.
CH pump
L.
Air supply (only when using twin pipe flue system)
B.
Gas valve
M.
Flue gas/air inlet concentric adapter
C.
Burner controller (incl. operating panel)
N.
Connection block / terminal strip X4
D.
Sensor S1 (flow)
O.
Condensate drain pan
E.
Sensor S2 (return)
P.
Domestic hot water sensor S3
F.
Fan
Q.
Siphon
G.
Flow sensor
R.
Heat exchanger
H.
Pressure sensor central heating
S.
Operating panel and display
I.
Connection wire 230 V ~ with earthed plug
T.
Ionization / ignition pen
J.
Manual air bleed
U.
Position of data plate
K.
Sight glass

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3.1 Accessories
Description
Article numbers
B-pack EKFJS*AA (1)
EKFJS*AA
B-pack middle (1)
EKFJM*AA
B-pack large (1)
EKFJL*AA
Valve kit (1)
EKVK4AA
Cover plate EKOMBG*ABV1
EKCP1AA
Outdoor sensor
EKOSK1AA
3-way valve set
EK3WV1AA
Flue gas adapter Concentric Ø80x125
EKHY090717
Flue gas adapter Parallel 80 mm
EKHY090707
Propane set EKOMBG22ABV1
EKPS075877
Propane set EKOMBG28ABV1
EKPS075867
Propane set EKOMBG33ABV1
EKHY075787
(1) This set contains a gas valve that complies to EN 331 with the following specifications:
•DN15
•Pressure class (MOP)5
•High temperature class C
CAUTION
•Make sure the valve meets re requirements for the application
•Do not use the gas valve in case of visible damage
•Do not make any modifications to the valve
•Instructions included with the valve must be followed
•Local legislation must be followed

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4INSTALLATION
4.1 Installation measurements
Unit with pipes connected downwards:
Unit + wall mounting strip
A =
Supply CH
G ¾” (ext)
B =
Return CH
G ¾” (ext)
C =
Gas
G ½” (int)
D =
Tap water cold
R ½”
E =
Tap water warm
R ½”
F =
Condense outlet
Ø dn25 (flexible)
h=
517mm
EKOMBG22ABV1
577mm
EKOMBG28ABV1
637mm
EKOMBG33ABV1
H=
590mm
EKOMBG22ABV1
650mm
EKOMBG28ABV1
710mm
EKOMBG33ABV1
Z =
Flue gas outlet/air inlet
Ø60/100 (concentric)

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Unit connected to B-pack:
Unit + B-pack
A =
Supply CH
G ¾” (ext)
B =
Return CH
G ¾” (ext)
C =
Gas
G ½” (int)
D =
Tap water cold
R ½”
E =
Tap water warm
R ½”
F =
Condense outlet
Ø dn25 (flexible)
H=
770mm
EKOMBG22ABV1
830mm
EKOMBG28ABV1
890mm
EKOMBG33ABV1
Z =
Flue gas outlet/air inlet
Ø60/100 (concentric)

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4.2 Installation space
The unit must be installed against a wall with sufficient load bearing capacity.
In case of light wall constructions, there is a risk of resonance noises.
Within 1 meter of the unit, there must be a earthed wall plug.
In order to prevent the condense outlet from freezing, the unit must be installed in a
frost-free room. Preferably ensure there is a space of at least 2 cm next to the boiler.
No free space is required due to danger of singeing.
IMPORTANT
The unit must not be installed in a space where work is carried out
with aggressive or corrosive gases such as hairspray.
4.2.1 Installing in kitchen cabinet
The unit can be placed between two kitchen cabinets, or inside a kitchen cabinet.
Make sure there is sufficient ventilation at the bottom and the top.
If the unit is installed inside a cabinet, ventilation openings of at least 50 cm2 are
required.
4.2.2 Removing cover plate and front panel
For various activities on the unit, the cover plate and front panel have to be removed
from the unit, if they were installed. Do this as follows:
•If you are using the cover plate (A), remove it to the front.
•Unscrew both screws (1) behind the display window.
•Pull the bottom of the front panel (2) forwards.
Danger: risk of burning
In case of high leaving water set ponts for space heating (eighter a high fixed set point
or a high weather-dependent set point at low ambient temperatures), the heat
exchanger of the boiler can be very hot, for example 70°C.
Beware that in case of a tapping demand, the water can initially have a higher water
temperature than requested.
In this case, it is recommended to install a thermostatic valve to prevent scalding.
This can be done according to the schematics below.
a=boiler, b=DHW from boiler, c= cold water inlet,
d=shower, e=thermostatic valve (field supply)

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4.3 Assembly
The boiler can be hung to the wall using :
•the wall suspension strip and a the connection kit EKVK4AA
•a B-pack including an expension vessel and a connection kit.
4.3.1 Assembling suspension strip and assembly bracket
•Make sure the construction of the wall is suitable for hanging the boiler.
•Drill the holes for the suspension strip and the connection kit in the wall
using the template delivered with the boiler.
•Mount the suspension strip and the assembly bracket horizontally on the
wall, using the associated attachment materials.
•Place the filling loop on the connections of the return and cold water
nipple following the connection kit installation instruction
•The boiler can now be placed on the suspension strip simultaniously
sliding the pipes of the boiler into the valves in the assembly bracket.
4.3.2 Assembling bottom connection set
•Make sure the construction of the wall is suitable for hanging the boiler
and B-pack.
•Drill the holes for the B-pack kit in the wall using the template delivered
with the boiler.
•Mount the B-pack on the wall using the associated attachment materials.
•Place the assembly bracket in the frame as described in the manual
inclued in the B-pack.
•Connect the flexible hose on the expension vessel and the conenction
on the return valve. Make sure the seal rings are placed !
•Place the filling loop on the connections of the return and cold water
nipple following the connection kit installation instruction
•The boiler can now be placed on B-pack simultaniously sliding the pipes
of the boiler into the valves in the assembly bracket

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4.3.3 Assembling the unit
1. Unpack the unit.
2. Check the content of the packaging, which consists of:
•Unit (A)
•Suspension strip (B)
•Siphon (C)
•Flexible tube (D)
•Installation instructions
•Operating instructions
•Warranty card
3. Check the unit for any damage: immediately report damages to the supplier.
4. Install the suspension strip.
5. Check whether the compression rings are positioned straight in the couplings of
the assembly bracket.
6. Position the unit: slide it from top to bottom over the suspension strip (B). Make
sure the pipes slide into the compression fittings simultaneously.
7. Tighten the compression fittings onto the assembly bracket.
The nipples and pipes must not rotate with it!
8. Open the display valve and loosen the two screws on the left and right of the
display, and remove the front panel.
9. Assemble the flexible tube (D) onto the outlet of the siphon.
10. Fill the siphon with water, and slide it as far as possible on top of the condense
output connector (E) under the unit.
11. Seal flexible tube (D) of the siphon, if possible together with the overflow pipe of
the inlet combination and the overflow valve, to the sewage via open connection
(F).
12. Assemble the air supply and the burning gas outlet (see par. 5.6).
13. Assemble the cover and tighten the two screws to the left and the right of the
display, and close the display cover.
4.3.4 Apply cover plate (optional)
Suspend the converted top edge of the cover plate from the washers underneath the
bottom of the unit, and slide the cover plate as far back as possible.
Danger: risk of burning
In case of high leaving water set ponts for space heating (eighter a high fixed set point
or a high weather-dependent set point at low ambient temperatures), the heat
exchanger of the boiler can be very hot, for example 70°C.
Beware that in case of a tapping demand, the water can initially have a higher water
temperature than requested.
In this case, it is recommended to install a thermostatic valve to prevent scalding.
This can be done according to the schematics below.
a=boiler, b=DHW from boiler, c= cold water inlet,
d=shower, e=thermostatic valve (field supply)

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5CONNECTING
5.1 Connecting CH installation
1. Rinse the CH installation carefully.
2. Fit the supply pipe (A) and return pipe (B) to the connection set.
3. All pipes must be assembled with no electrical current, in order to prevent shocks
from the pipes.
4. Existing connections may not be rotated, in order to prevent leakages.
The CH installation must be fitted with:
•A filling/draining tap (A) in the return pipe, immediately underneath the unit.
•A draining tap at the lowest point of the installation.
•An overflow valve (B) of 3 bar in the input pipe at a distance of no more than 500 mm
from the unit.
Between the unit and the overflow valve there may be no valve or constriction.
•An expansion vessel in the return pipe (in the B-pack or in the installation).
•A check valve, if there are pipes running up, within close distance of the unit. This
prevents a thermosiphon effect from occurring during tap water operation (a non
spring-operated return valve, must be assembled vertically).
5.1.1 Thermostatic radiator taps
If all radiators are fitted with thermostatic or cable radiator taps, a minimum water
circulation must be safeguarded. See par. 7.3.
5.1.2 Underfloor heating
Underfloor heating with pump
If an underfloor heating system is not hydraulically neutral, the underfloor heating pump
may generate unwanted circulation over the CH boiler. For a good functioning of the
domestic hot water provision, unwanted circulation over the CH boiler must be
prevented.
Connect an underfloor heating system indirectly hydraulically neutrally or provide the
CH installation with a two-way valve set 230 V ~ (E). If the underfloor heating pump
absorbs heat via the return of the boiler, unwanted circulation can be prevented by
means of a check valve (D).
Make sure there is a minimal water circulation. See par. 7.3.
Connection diagram underfloor heating
A. CH boiler
B. CH pump
C. Thermostatic control valve
D. Spring-operated check valve
E. Electrical valve 230 V ~
F. Radiators
G. Space/clock thermostat
H. Maximum thermostat

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Underfloor heating without pump
Connect the underfloor heating system (D) and set the maximum CH supply
temperature of the CH boiler to the design condition. Fit a clamp thermostat (A) onto
the supply tube underneath the CH boiler. The clamp thermostat with blind cap must
be set to a maximum supply temperature of 55°C.
Fit the on/off room thermostat (B) and connect in a series with the clamp thermostat.
The boiler must be connected to X4 - 6/7.
In this situation, the pump in the boiler is used to bridge the loss of pressure of the
underfloor heating system. Using the loss of pressure graph par. 7.4, the maximum
loss of pressure of the underfloor heating system can be determined.
Make sure there is a minimal water circulation. See par. 7.3.
In case of an underfloor heating system without pump, we recommend changing the
following parameter settings:
par. o from 0 to 3.
par. P from 5 to 2.
Parameter 3 must also be set to its minimum level, or the
Transmission loss of the property, see par. 7.3.
5.1.3 Dividing CH installation in groups in case of additional heat
sources
Operating principle
If the room thermostat switches off the boiler because another heat source, the other
rooms may cool down.
This can be resolved by splitting the CH installation into two groups. The group with the
external heat source (Z2) can be shut off from the main circuit by means of an
electrical shut-off valve. Both groups are fitted with their own room thermostat.
Please note: This "external heat source" regulation may only be applied if no extra
external boiler has to be heated up (installation type 1).
Installation instructions
1. Install the valve in accordance with the connection diagram.
2. Connect the room thermostat of group 1 to op X4 –6/7.
3. Connect the room thermostat of group 2 to op X4 –11/12.
4. Change parameter A (see Parameter settings via the service code par. 7.2).
Please note: The room thermostat in group 1 MUST be an on/off thermostat. The room
thermostat in group 2 may be an OpenTherm thermostat or an on/off thermostat.
Connection diagram "external heat source" regulation
A. CH boiler
B. Electrical shut-off valve 230 V ~
C. Radiators
T1. Room thermostat group 1
T2. Room thermostat group 2
Z1. Group 1
Z2. Group 2

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5.2 Connecting DHW installation
1. Rinse the installation carefully.
2. If required, assemble an inlet combination.
3. Assemble the cold (D) and warm water pipe (D) to the connection set.
Comments
•If the unit is only used for warm water supply, the heating function can be switched
off using the service code on the operating panel. The CH installation does not need
to be connected or filled.
•If the unit is switched off during winter, and is disconnected from the electricity
supply, the sanitary water must be drained in order to prevent freezing. To do so,
disconnect the tap water connections straight underneath the unit.
In case of old installations or domestic hot water circuits which can contain small particles,
install a filter in the domestic hot water circuit.
This pollution could cause a fault during domestic hot water operation.
Resistance graph tap circuit unit
A. EKOMBG22ABV1
B. EKOMBG28ABV1
C. EKOMBG33ABV1
X. Water pipe pressure (Bar)
Y. Flow rate (L/min, tolerance ± 10%)

Daikin Europe NV 19
5.3 Connecting electronically
CAUTION
A socket with safety ground must be no further than 1 meter
from the unit.
The socket must be easily accessible.
When installing the unit in a damp space, a fixed connection is
obligatory, by means of an all-pole main switch with a
minimum contact gap of 3 mm.
If the mains cable is damaged or requires replacement for any
other reason, the replacement mains cable must be ordered
from the manufacturer or its representative. In case of any
doubt, contact the manufacturer or its representative.
1. Remove the plug from the socket, when working on the electrical circuit.
2. If there is a cover plate (A), remove it to the front.
3. Unscrew both screws (1) behind the display window.
4. Slide the bottom of the front panel (2) forwards, and remove it.
5. Pull the boiler controller forward. The boiler controller unit will tip downwards in the
process.
6. Consult par. 9.2 to make the connections.
7. After the required connections have been made, slide the boiler controller back into
the unit and return the cover plate, if you are using one.
8. After making the required connections, connect the unit to the socket with safety
ground.
5.3.1 Electrical connections
Temperature regulation
Connector X4
Comments
Room thermostat on/off
6 - 7
Modulating thermostat with
comfort function in use
11 - 12
Outdoor temperature
sensor
8 - 9
Frost thermostat
6 - 7
Parallel over room thermostat

Daikin Europe NV 20
5.4 Connect room thermostat
5.4.1 Room thermostat on/off
1. Connect the room thermostat (see par. 10.1).
2. If necessary, set the feedback resistance of the room thermostat to 0.1 A. If unsure,
measure the electrical current and set it accordingly.
The maximum resistance of the thermostat pipe and the room thermostat amounts to a
total of 15 Ohm.
5.4.2 Modulating room thermostat, Open Therm
The unit is suitable for connecting a modulating room thermostat, in accordance with
the OpenTherm communication protocol.
The most important function of the modulating room thermostat is to calculate the input
temperature at a required room temperature, in order to make optimal use of the
modulating. At every heating request, the required input temperature is shown on the
display of the unit.
Connect the modulating thermostat (see par. 10.1).
If you want to use the tap water on/off switch function of the OpenTherm thermostat, the
tap water comfort function must be set to eco or on.
For more information, consult the manual of the room thermostat.
5.4.3 Modulating room thermostat, wireless
The EKOMBG*ABV1 CH boiler is suitable to communicate wireless without
sending/receiving module with the Honeywell room thermostats T87RF1003 Round RF,
DTS92 and CMS927. The CH boiler and the room thermostat must be appointed to each
other:
•Press the reset button of the unit for approximately 5 seconds to access the RF room
thermostat menu.
•One of the following codes will be shown on the display of the unit:
1. rF and L / - : the display above the button shows an L alternated by a –
red led : flashing
The CH boiler has not been appointed. A unit in this operating status, can be linked
by using the method of the appropriate room thermostat.
The method of appointment depends on the type of room thermostat and is
described in the installation and operating instructions of the wireless room
thermostat.
2. rF and L / 1 : the display above button shows an Lalternated by a 1
red led : off
The CH boiler has already been appointed. There is already an existing link with
an RF room thermostat. In order to allow a new link to be made, the existing link
will have to be removed.
See: Undo the appointment of an RF room thermostat to the CH boiler.
•Press the reset button to leave the RF room thermostat menu or wait for 1 minute.
Testing the connection between the unit and the RF room thermostat
1. Press the reset button of the unit for approximately 5 seconds to access
the RF room thermostat menu of the boiler controller.
2. Press the service button 1x. On the display above the button, a t
will be shown.
3. Set the room thermostat to the test mode (see the installation and operating
instructions of the room thermostat).
4. The red led above the reset button will flash if the appointment has
been carried out correctly.
5. Press the reset button of the unit to leave the RF room thermostat menu
of the boiler controller. You will automatically exit the test mode 1 minute
after the last test message of the RF room thermostat has been received.
Undo the appointment of an RF room thermostat to the CH boiler.
•Press the reset button of the unit for approximately 5 seconds to access
the RF room thermostat menu of the CH boiler.
•Press the service button 2x. On the display above the button, a C
will be shown.

Daikin Europe NV 21
•Press the reset button of the unit again to remove the existing
appointments. The display of the unit will show rF again, with a flashing
L / - . If required, an RF room thermostat can be appointed to the unit
again.
•Press the reset button of the unit to leave the RF room thermostat
menu or wait for 1 minute.
5.4.4 Outdoor temperature sensor
The unit is provided with a connection for an outdoor temperature sensor. The
outdoor temperature sensor should be used in combination with an on/off room
thermostat.
In principle, any on/off room thermostat can be combined with an outdoor sensor.
Upon request of the room thermostat, the boiler will provide heat until the maximum
set temperature in the boiler has been reached. This maximum set temperature is
automatically regulated via the outdoor sensor, in accordance with the set fuel line
in the boiler.
Connect the room outdoor sensor (see par. 10.1).
For the fuel line setting, see the weather dependent regulation (see par. 7.5).
5.5 Connecting gas
1. Fit the gas valve directly on the 1/2" gas connection of the connection set
using appropriate seal
2. .Place a gas sieve in the connection for the unit if the gas may be
contaminated.
3. Connect the gas pipe in the gas valve using appropriate seal..
4. Check the gas carrying parts for leakages at a pressure of up to 50 mbar.
5. The gas pipe should be fitted pressure free.

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5.6 Flue and air supply duct
For the installation of the flue and air supply duct material, see the
manual included with the materials. Contact the
manufacturer of the relevant flue and air supply duct materials for
extensive technical information and specific
assembly instructions.
Make sure that the socket connections of the flue and air supply duct
materials are correctly sealed.
Improper fastening of the flue and the air supply duct
can lead to hazardous situations or result in personal injury.
Check all flue components for tightness.
Don not use screws or parkers to mount the flue system as leakage can
occur.
Do not use any sort of grease when mounting the pipe system.
Use water instead. The sealing rubbers can be negatively affected when
grease is applied.
Do not mix any components, materials or ways of coupling from
different manufacturers.
5.6.1 Concentric connection 60/100
The boiler is fitted with a flue gas adapter suitable for connecting to a concentric flue gas extractor
system with a diameter of 60/100.
Fit the concentric pipe thoughtfully in the adapter. The built in gaskets ensure there is an air tight
seal.
5.6.2 Concentric connection 80/125
If required, the flue gas adapter 60/100 can be replaced by a version for a flue gas extractor
system with a 80/125 diameter.
1. Carefully follow the instruction as provided with the adapter set 80/125.
2. Fit the concentric pipe thoughtfully in the adapter. The built in gaskets ensure there is an air
tight seal.
5.6.3 Parallel connection 80/80
If required, the flue gas adapter 60/100 can be replaced by a version for a parallel flue system (2
pipes) with a 80 mm diameter.
1. Carefully follow the instruction as provided with the adapter set 80.
2. Fit the pipes for the air supply and flue gas thoughtfully in the air inlet opening and flue gas
adapter of the unit. The built in gaskets ensure there is an air tight seal. Make sure that the
connections are not mixed.