EKOMB22AAV1H - Water heater DAIKIN - Free user manual and instructions

USER MANUAL EKOMB22AAV1H DAIKIN

White industrial water heater device with a cylindrical top and control panel (no visible text or symbols)

EKOMB22AAV1H

EKOMB28AAV1H

EKOMB33AAV1H

Installation instructions

1 Safety instructions 5

2 Unit description 6

2.1 General....6
2.2 Functioning....6
2.3 Operating modes....7
2.4 PC Interface 8
2.5 Test programs 8

3 Main components 10

3.1 Accessories....11

4 Installation 12

4.1 Installation measurements 12
4.2 Installation space....14
4.3 Assembly 15

5 Connecting 17

5.1 Connecting CH installation....17
5.2 Connecting DHW installation....20
5.3 Connecting electronically 21
5.4 Connect room thermostat....22
5.5 Connecting gas 23
5.6 Flue and air supply duct 24
5.7 Outlet systems....25
5.8 Flue material....26
5.9 Connection to a flue system without air inlet (B23, B33)....28
5.10 Connection to a sealed flue system....29

6 Commissioning the unit and the Installation

6.1 Filling and air purge of unit and installation 38
6.2 Commissioning the unit 39
6.3 Switching off the unit 40

7 Setting and adjustment

7.1 Direct via operating panel....41
7.2 Parameter settings via the service code 42
7.3 Setting maximum CH power 44
7.4 Setting pump setting....44
7.5 Weather dependent regulation 44
7.6 Conversion to different type of gas....45
7.7 Gas/air regulation 45
7.8 Setting gas/air regulation....46

8 Malfunctions

8.1 Show last malfunction 48
8.2 Malfunction codes 48
8.3 Other faults....49

9 Maintenance

10 Technical specifications

10.1 Technical Product Fiche in accordance to CELEX-32013R0811....56
10.2 Electrical diagram EKOMB22AAV1H, EKOMB28AAV1H & EKOMB33AAV1H....57
10.3 NTC resistances....58

11 Warranty conditions

© 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.

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
High Efficiency	HR
Daikin EKOMB22AAV1H, EKOMB28AAV1H, EKOMB33AAV1H	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 type 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 supplyVoltage, 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, FR, PL, IT, GR, PT	Countries of Destination (EN 437)
I2E(s), I2H, , II2H3P,II2Esi3P	Approved unit categories (EN 437)
G20-20 mbarG25-25 mbar	Gas group and gas connection pressure as set atthe factory (EN 437)
B23, .... C93(x)	Approved flue gas category (EN 15502)
Tmax	Max. flow temperature in °C
IPX4D	Electrical protection class

2 SAFETY INSTRUCTIONS

IMPORTANT

This product is intended for domestic use only.

The manufacturer Daikin Europe NV 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 EKOMB*AAV1H wall-mounted gas boiler and any associated accessories.

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 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.

Depending on the year of construction, an Daikin EKOMB*AAV1H 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.

3 UNIT DESCRIPTION

3.1 General

The Daikin EKOMB*AAV1H 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 combustion gas outlet can be connected to the unit by means of two separate pipes. A concentric connection can be supplied upon demand. 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 EKOMB*AAV1H 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 (G20) as a standard. On request, the unit can also be provided for propane (G31).

3.2 Functioning

The Daikin EKOMB*AAV1H 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 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.

Line drawing of a rectangular electronic device with a cylindrical top and mounting ports (no text or symbols)

3.3 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.

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 ① 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.

Post-running CH

After the end of the CH operation, the pump will run for a specified time. 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.

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.

Self test

Once every 24 hours, the boiler controller tests the connected sensors. During the test, the controller will not carry out any other tasks.

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.

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 downtime.

CH operation

An on/off thermostat, an OpenTherm thermostat, an outdoor sensor or a combination thereof can be connected to the controller (see par. 10.1).

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 operating, 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 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. 8.1). 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 heating request of less than 40 degrees will be generated.

5 Tap 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 5). During 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. 8.1). 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 (this temperature can be set, see par. 8.2). The tap comfort function has the following settings:

• On: (① 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.

3.4 PC Interface

The boiler controller is provided with an interface for a PC. A PC can be connected 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.

3.5 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.

3.5.1 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. 11.2).

Note

When the unit is switched off ( - on the service display), the unit frost protection will remain active, however a heating request from an (external) frost thermostat will be ignored.

4 MAIN COMPONENTS

M J K D R E H P I O N Q L T F G B A U C S

A. CH pump

B. Gas valve

C. Burner controller (incl. operating panel)

D. Sensor S1 (flow)

E. Sensor S2 (return)

F. Fan

G. Flow sensor

H. Pressure sensor central heating

I. Connection wire 230 V \~ with earthed plug

J. Manual air bleed

K. Sight glass

L. Air supply (only when using twin pipe flue system)

M. Flue gas/air inlet concentric adapter

N. Connection block / terminal strip X4

O. Condensate drain pan

P. Domestic hot water sensor S3

Q. Siphon

R. Heat exchanger

S. Operating panel and display

T. Ionization / ignition pen

U. Position of data plate

4.1 Accessories

Description	Article numbers
B-pack small (1)	EKFJS*AA
B-pack middle (1)	EKFJM*AA
B-pack large (1)	EKFJL*AA
Valve kit (1)	EKVK4AA
Cover plate	EKCP1AA
Outdoor sensor	EKOSK1AA
3-way valve set	EK3WV1AA
Flue gas adapter Concentric ∅80x125	EKHY090717
Flue gas adapter Parallel 80 mm	EKHY090707
Propane conversion set *KOMB28AAV1H & *KOMB33AAV1H	EKHY075787
Propane conversion set *KOMB22AAV1H	EKPS075867

(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

5 INSTALLATION

5.1 Installation measurements

Unit with pipes connected downwards:

Unit + wall mounting strip

A =	Supply CH	G 3/4" (ext)
B =	Return CH	G 3/4" (ext)
C =	Gas	G 1/2" (int)
D =	Tap water cold	R 1/2"
E =	Tap water warm	R 1/2"
F =	Condense outlet	∅ dn25 (flexible)
h=	517mm	EKOMB22AAV1H
	577mm	EKOMB28AAV1H
	637mm	EKOMB33AAV1H
H=	590mm	EKOMB22AAV1H
	650mm	EKOMB28AAV1H
	710mm	EKOMB33AAV1H
Z =	Flue gas outlet/air inlet	∅60/100 (concentric)

Unit connected to B-pack:

450 404 95 265 335 Z 120 225 265 360 120 180 Z 77 H 50 65 65 65 65 77 F A E C D B 020601001

Unit + B-pack

A =	Supply CH	G 34" (ext)
B =	Return CH	G 34" (ext)
C =	Gas	G 12" (int)
D =	Tap water cold	R 12"
E =	Tap water warm	R 12"
F =	Condense outlet	∅ dn25 (flexible)
H=	770mm	EKOMB22AAV1H
	830mm	EKOMB28AAV1H
	890mm	EKOMB33AAV1H
Z =	Flue gas outlet/air inlet	∅60/100 (concentric)

5.2 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 singing.

5.2.1 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 cm ^2 are required.

5.2.2 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 b c e d

a=boiler, b=DHW from boiler, c=cold water inlet, d=shower, e=thermostatic valve (field supply)

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or force, including numbered annotations 1 and 2.

5.3 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 expansion vessel and a connection kit.

5.3.1 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 simultaneously sliding the pipes of the boiler into the valves in the assembly bracket.

Technical line drawings of mechanical components with screws and bolts (no text or symbols)

5.3.2 Assembling B-pack

• 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 included in the B-pack.
• Connect the flexible hose on the expansion 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 simultaneously sliding the pipes of the boiler into the valves in the assembly bracket

Technical line drawing of a mechanical device with internal tubing and housing (no text or symbols)

5.3.3 Assembling the unit

1. Unpack the unit.

2. Check the content of the packaging, which consists of:

3. Unit (A)

4. Suspension strip (B)
5. Siphon+ flexible hose (C)
   • Installation instructions
6. Operating instructions

7. Warranty card

8. Check the unit for any damage: immediately report damages to the supplier.

9. Install the suspension strip.

10. Check whether the compression rings are positioned straight in the couplings of the assembly bracket.

11. Position the unit: slide it from top to bottom over the suspension strip (B). Make sure the pipes slide into the compression fittings simultaneously.

12. Tighten the compression fittings onto the assembly bracket.

The nipples and pipes must not rotate with it!

1. Open the display valve and loosen the two screws on the left and right of the display, and remove the front panel.

2. Assemble the flexible tube (D) onto the outlet of the siphon.

Fill the siphon with water, and slide it as far as possible on top of the condense output connector (E) under the unit.

1. 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).

2. Assemble the air supply and the burning gas outlet (see par. 6.6) Assemble the cover and tighten the two screws to the left and the right of the display, and close the display cover.

Technical diagram of a mechanical device with labeled parts A, B, and C, including a close-up view of the component.

E D C F

5.3.4 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.

Please note: When installing the boiler in combination with a cover plate, the siphon will extend underneath the cover plate.

Technical line drawing of a mechanical assembly with mounting brackets and bolts (no text or symbols)

6 CONNECTING

6.1 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 thermo siphon effect from occurring during tap water operation (a non spring-operated return valve, must be assembled vertically).

Technical diagram showing mechanical assembly with labeled parts A and B, likely from an engineering or manufacturing context.

6.1.1 Thermostatic radiator taps

If all radiators are fitted with thermostatic or cable radiator taps, a minimum water circulation must be safeguarded. See par. 8.4.

6.1.2 Underfloor heating

Underfloor heating distributor with pump

If an underfloor heating system is not hydraulically neutral, the underfloor heating pump may generate unwanted circulation over the boiler. For a good functioning of the domestic hot water provision, unwanted circulation over the 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. Boiler
B. Pump
C. Thermostatic control valve
D. Spring-operated check valve
E. Electrical valve 230 V \~
F. Radiators
G. Space/clock thermostat
H. Maximum thermostat

A B 02061014

graph TD
    A["Component A"] -->|Flow| B["Component B"]
    B -->|Control Valve| C["Component C"]
    B -->|Flow| D["Component D"]
    B -->|Control Valve| E["Component E"]
    C --> F["Component F"]
    D --> F
    E --> F
    G["Control Valve G"] --> A
    H["Component H"] --> B
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333

Underfloor heating distributor without pump

Connect the underfloor heating system (D) and set the maximum CH supply temperature of the boiler to the design condition. Fit a clamp thermostat (A) onto the supply tube underneath the boiler. The clamp thermostat with blind cap must be set to a maximum supply temperature of 55^ C.

Assemble the on/off room thermostat (B) and connect it in series with the clamp thermostat to connector X4 - 6/7 in the unit. See par. 10.1.

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. 8.4, 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. If required, install a bypass valve (C).

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.

A B C D

6.1.3 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 (wood heater, open fire etc.) heats the room, the other rooms may cool down. This can be resolved by splitting the CH installation into two zones. The zone with the external heat source (Z2) can be shut off from the main circuit by means of an electrical shut-off valve. Both zones are fitted with their own room thermostat.

Please note: "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 zone 1 to X4 - 6/7.
3. Connect the room thermostat of zone 2 to X4 - 11/12.
4. Change parameter A (see Parameter settings via the service code par. 7.2).
   Please note: The room thermostat in zone 1 MUST be an on/off thermostat. The room thermostat in zone 2 may be an OpenTherm thermostat or an on/off thermostat.

graph TD
    A["Component A"] --> Z1["Component Z1"]
    Z1 --> C1["C"]
    C1 --> B["B"]
    B --> T1["T1"]
    T1 --> Z2["Component Z2"]
    Z2 --> C2["C"]
    C2 --> B
    B --> T2["T2"]
    T2 -.-> A
    style Z1 fill:#f9f,stroke:#333
    style Z2 fill:#f9f,stroke:#333

Connection diagram "external heat source" regulation

A. Boiler
B. Electrical shut-off valve 230 V \~
C. Radiators
T1. Room thermostat zone 1
T2. Room thermostat zone 2
Z1. Zone 1
Z2. Zone 2

6.2 Connecting DHW installation

1. Rinse the installation carefully.
2. If required, assemble an inlet combination.
3. Assemble the cold (D) and warm water pipe (C) 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 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.

Technical diagram of a mechanical assembly with labeled components D and C, showing connections between pipes and a housing.

Resistance graph tap circuit unit

A. EKOMB22AAV1H
B. EKOMB28AAV1H
C. EKOMB33AAV1H
X. Water pipe pressure (Bar)
Y. Flow rate (L/min, tolerance ± 10%)

6.3 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. 11.2 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.

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or force, including numbered annotations 1 and 2.

6.3.1 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
External energy-saving switch	4 - 5	Set parameter c. to 0Also see par. 8.2
Frost thermostat	6 - 7	Parallel over room thermostat

Cathode 24

X5 4 5 6 7 8 9 10 11 12 X4

6.4 Connect room thermostat

6.4.1 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.

6.4.2 Modulating 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.

6.4.3 Modulating room thermostat, wireless

rt-module

The EKOMB*AAV1H CH boiler is suitable to communicate wirelessly 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 in order to get to 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 the ✏ button shows an L alternated 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 exit 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.

6. Press the reset button of the unit for approximately 5 seconds to access the RF room thermostat menu of the boiler controller.

7. Press the service button 1x. On the display above the button, a will be shown.
8. Set the room thermostat to the test mode (see the installation and operating instructions of the room thermostat).
9. The red led above the reset button will flash if the appointment has been carried out correctly.
10. Press the reset button of the unit to exit 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.

Diagram showing three electrical circuit symbols with labeled components: thermometer, fuses, diode, and switch.

Diagram showing three electrical circuit components with symbols and labels: a thermometer, a digital display labeled 'rF', and a toolbar with tools.

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.
• 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.

6.4.4 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. 8.5).

Technical line drawing of a mechanical assembly with multiple cylindrical components and a labeled point 'E' (no text or symbols beyond label)

6.5 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.

6.6 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 whe grease is applied.

Do not mix any components, materials or ways of coupling from different manufacturers.

6.6.1 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.

6.6.2 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.

6.6.3 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.

6.7 Outlet systems

Please note that not all flue gas configurations described below are permitted in all countries. Therefore observe local regulations prior to installation.

The drawings above are a sample and can differ on details.

Explanation flue systems
Category in accordance to CE
B23	A flue that evacuates the products of combustion to the outside of the room containing the appliance. The combustion air is drawn directly from the room.	Make sure the air inlet is open and complies to the demands
B33	A flue system which is connected to a common duct system. This common duct system consists of a single natural draught flue. All pressurized parts of the appliance containing products of combustion are completely enclosed by parts of the appliance supplying combustion air. Combustion air is drawn into the appliance from the room by means of a concentric duct, which encloses the flue. The air enters through defined orifices situated in the surface of the duct.	Make sure the air inlet is open and complies to the demands
C13	Horizontal flue system. Discharge in the outside wall.Inlet opening for the air supply is in the same pressure zone as the discharge	For example : a wall terminal through the facede.
C33	Vertical flue system. Flue gas discharge via the roof.Inlet opening for the air supply is in the same pressure zone as the discharge	For example : a vertical roof terminal.
C43	Joint air supply and flue gas discharge duct (CLV system)Twin-pipe or concentric
C53	Separate air supply and separate flue gas discharge duct.Discharging into different pressure zones
C63	Free in the market available flue material with CE approval	Do not mix flue materials from different suppliers.
C83	Joint air supply and flue gas discharge duct (CLV system)Discharging into different pressure zones	Only as twin pipe system
C93	Air supply and flue gas discharge duct in shaft or ducted: Concentric. Air supply from existing duct. Flue gas discharge via the roof. Air supply and flue gas discharge are in the same pressure zone.	Concentric flue system between the boiler and the duct.

6.8 Flue material

The following flue materials can be ordered at Daikin.

Also visit the website: fluegas.daikin.eu

C13

Art.no.	Description
EKFGP2978	Wall Terminal Kit PP/GLV 60/100
EKFGP4651	Extension PP/GLV 60/100 x 500mm
EKFGP4652	Extension PP/GLV 60/100 x 1000mm
EKFGP4660	Elbow PP/GLV 60/100 90°
EKFGP4661	Elbow PP/GLV 60/100 45°
EKFGP2977	Wall Terminal Kit low profile PP/GLV 60/100
EKFGP4664	Elbow PP/GLV 60/100 30°
EKFGP4631	Wall Bracket Dn.100
EKFGP4667	Measurement Tee with Inspection Panel PP/GLV 60/100

C33

Art.no.	Description
EKFGP4631	Wall Bracket Dn.100
EKFGP4651	Extension PP/GLV 60/100 x 500mm
EKFGP4652	Extension PP/GLV 60/100 x 1000mm
EKFGP4660	Elbow PP/GLV 60/100 90°
EKFGP4661	Elbow PP/GLV 60/100 45°
EKFGP4664	Elbow PP/GLV 60/100 30°
EKFGP4667	Measurement Tee with Inspection Panel PP/GLV 60/100
EKFGP6837	Roof Terminal PP/GLV 60/100 AR460

C53

Art.no.	Description
EKFGP4651	Extension PP/GLV 60/100 x 500mm
EKFGP4652	Extension PP/GLV 60/100 x 1000mm
EKFGP6837	Roof Terminal PP/GLV 60/100 AR460
EKFGW4085	Elbow PP 80 90°
EKFGW4086	Elbow PP 80 45°
EKFGV1102	Chimney Conection Set 60/100 Air Intake Dn.80 C53
EKFGP4660	Elbow PP/GLV 60/100 90°
EKFGP4661	Elbow PP/GLV 60/100 45°
EKFGP4664	Elbow PP/GLV 60/100 30°
EKFGP4667	Measurement Tee with Inspection Panel PP/GLV 60/100
EKFGP4631	Wall Bracket Dn.100
EKFGW4001	Extension PP 80x500
EKFGW4002	Extension PP 80x1000
EKFGW4004	Extension PP 80x2000

C93

Art.no.	Description
EKFGP4678	Chimney Connection 60/100
EKFGP1856	Flex Kit PP Dn.60-80
EKFGP6340	Extension Flex PP 80 L=10 M
EKFGP6344	Extension Flex PP 80 L=15 M
EKFGP6341	Extension Flex PP 80 L=25 M
EKFGP6342	Extension Flex PP 80 L=50 M
EKFGP6324	Connector Flex-Flex PP 80
EKFGP4664	Elbow PP/GLV 60/100 30°
EKFGP4661	Elbow PP/GLV 60/100 45°
EKFGP4660	Elbow PP/GLV 60/100 90°
EKFGP6333	Spacer PP 80-100
EKFGP4667	Measurement Tee with Inspection Panel PP/GLV 60/100
EKFGP4631	Wall Bracket Dn.100
EKFGP4651	Extension PP/GLV 60/100 x 500mm

6.9 Connection to a flue system without air inlet (B23, B33)

CAUTION

• Make sure the boiler room complies to the regulatory requirements for connecting to a flue system in accordance to B23 or B33
• When connection the boiler to a flue system in accordance to B23 or B33 the electrical protection class is IP20 instead of IPX4D

General assembly

1. Slide the combustion gas outlet pipes into each other.

From the unit, every pipe has to be slid into the previous one.

Mount a non-vertical combustion gas outlet pipe on a slope towards the unit (min. 5mm/m).

6.9.1 Permitted pipe lengths at parallel air supply and flue tube systems

Permitted pipe lengths B23 and B33 when applying ∅80 mm

	C13	C33	C43	C53	C83
EKOMB22AAV1H	100 m	100 m	100 m	100 m	100 m
EKOMB28AAV1H	85 m	85 m	85 m	85 m	85 m
EKOMB33AAV1H	80 m	80 m	80 m	80 m	80 m

6.10 Connection to a sealed flue system.

6.10.1 Pipe lengths

As the resistance of the flue tube and air supply pipes increases, the power of the unit will decrease. The maximum permitted power reduction is 5%.

The resistance of the air supply and the combustible gas outlet depends on the length, diameter and all components of the pipe system. Per unit category, the total permitted pipe length has been indicated for the air supply and the combustible gas outlet.

6.10.2 Permitted pipe lengths in concentric flue tube systems

Permitted pipe lengths when applying concentric 60/100

	C13	C33
EKOMB22AAV1H	10 m	11 m
EKOMB28AAV1H	10 m	10 m
EKOMB33AAV1H	10 m	10 m

Permitted pipe lengths when applying concentric 80/125

	C13	C33	C93
EKOMB22AAV1H	29 m	29 m	See par. 6.10.8
EKOMB28AAV1H	29 m	29 m	See par. 6.10.8.
EKOMB33AAV1H	29 m	29 m	See par. 6.10.8

Contact the manufacturer for test calculations for the resistance of the air supply and combustible gas outlet pipe and the wall temperature at the end of the combustible gas outlet pipe.

Replacement lengths

Bend 90°	R/D=1	2 m
Bend 45°	R/D=1	1 m
Knee 90°	R/D=0.5	4 m
Knee 45°	R/D=0.5	2 m

General assembly:

For all outlets, the following assembly applies:

1. Slide the concentric combustion gas outlet pipe and air supply pipe.
2. Slide the concentric pipes into each other.
   From the unit, every pipe has to be slid into the previous one.
3. Mount a non-vertical combustion gas outlet pipe on a slope towards the unit (min. 5mm/m).
4. Fit the assembly brackets in accordance with the assembly instructions of the supplier of the air supply/flue tube system.

6.10.3 Permitted pipe lengths at parallel air supply and flue tube systems

Permitted pipe lengths when applying ∅80 mm (total of flue pipe and air intake pipe together).

	C13	C33	C43	C53	C83
EKOMB22AAV1H	100 m	100 m	100 m	100 m	100 m
EKOMB28AAV1H	85 m	85 m	85 m	85 m	85 m
EKOMB33AAV1H	80 m	80 m	80 m	80 m	80 m

Replacement lengths

Bend 90°	R/D=1	2 m
Bend 45°	R/D=1	1 m
Knee 90°	R/D=0.5	4 m
Knee 45°	R/D=0.5	2 m

R/D=1 R/D=0.5

Calculation example

Pipe	Pipe lengths	Pipe length total
Flue gas outlet	L1 + L2 + L3 + 2x2 m	13 m
Air supply	L4 + L5 + L6 + 2x2m	12 m

Note:

The total pipe length is: sum of the straight pipe lengths + sum of the replacement pipe lengths of bends/knees amounts to a total of 25 meters. If this value is less than the maximum permitted pipe length, the flue gas outlet meets the requirements on this point.

L4=6m L3=7.5m L5=0.5m L2=0.5m L6=1.5m L1=1m φ(16°α-1°)

6.10.4 Free in the market available flue gas materials (C63).

The properties of the combustion determine the choices for the flue material.

The standards EN 1443 and EN 1856-1 provide the necessary information for choosing the flow material by means of a sticker including an identification string.

The Identification string contains the following information:

A CE marking

B The standard to comply to: Metal, EN 1856-1 or EN 1856-2

Plastic, EN 14471

The ID string needs to contain the following information:

C Temperature class : T120
D Pressure class : Pressure (P) or High Pressure (Hi)
E Resistance class : W (Wet)
F Resistance class in case of fire : E

Example: EN 14471 : 2013 T120 H1W 1/2 O(00) LEE U0 PY: 2017 A CE 0000 F E D C B

Dimensions C63 Flue system (external dimensions in mm)

Parallel		Concentric 80/125		Concentric 60/100
		Flue pipe	Air inlet	Flue pipe	Air inlet
80	+0,3-0,7	80	+0,3-0,7	60	+0,3-0,7

Flue materials of different markings must not be combined!

6.10.5 Securing the flue system

IMPORTANT

- These regulations are typical for both concentric and parallel flue systems.

• The flue system must be secured to a solid structure.
• The flue system should have a continuous fall back to the boiler (1.5° to 3°). N.B. Wall terminals must be installed leveled..
• Only use accompanying brackets.
• Every elbow must be secured by using the bracket. Exception at connecting on boiler: If the length of the pipes before and aft the first elbow, are no more than 250 mm, the second element after the first elbow has to contain a bracket.

Note: The bracket must be positioned on the elbow!

• Every extension must be secured per metre with a bracket.
  This bracket must not be clamped around the pipe ensuring free movement of the pipe..
• Make sure bracket is locked into the correct position depending on the position of the bracket on the pipe or elbow:
• Do not mix flue parts or clamps of different suppliers.

Positioned on pipe Positioned on the sleeve

Max. distance between clamps

Vertical	Others
2000 mm	1000 mm

• Divide the lengths between the brackets evenly.
  • Every system must contain at least 1 bracket.
  • Position the first clam at a maximum of 500 mm from the boiler.

max. 1000 mm

max. 2000 mm

max. 1000 mm

6.10.6 Air supply from the facade and a roof outlet with communal exhaust system

Unit category: C83

An air supply from the facade and a roof outlet with communal exhaust system is permitted.

IMPORTANT

• The air supply in the facade must be fitted with an inlet roster (A).
• The communal output system must be fitted with a traction extractor hood (B).
• If the communal output system is situated in the outdoors, the output pipe must be double-walled or insulated.

Permitted pipe length

Combustion gas outlet pipe between the unit and the communal output system and air supply pipe between the unit and the inlet roster together:

EKOMB22AAV1H	100 m
EKOMB28AAV1H	85 m
EKOMB33AAV1H	80 m

The minimum diameters of the communal output system based on vacuum

A B min.500 min.1500

Flue tube diameter

Number of units	EKOMB22AAV1H	EKOMB28AAV1H	EKOMB33AAV1H
2	110	130	130
3	130	150	150
4	150	180	180
5	180	200	200
6	200	220	220
7	220	230	230
8	230	250	250
9	240	270	270
10	260	280	280
11	270	290	290
12	280	300	300

Communal combustion gas outlet

The output of the combustion gas outlet can be made in any location on the sloping roof surface, providing the outlet in the roof surface has the same orientation as the air supply in the facade. On a flat roof, the outlet of the combustion gas outlet must be made in the "free" outlet area.

Fit a condense output.

Note

The communal outlet is certified in combination with the unit.

6.10.7 Combined flue gas outlet/air inlet system

Unit category : C43

IMPORTANT

• A roof outlet through a Combination Air Supply combustion gas outlet system is permitted.
• For the communal combustion gas outlet hood and air supply hood, a declaration of no objection or a Gas certificate from the Gastec Gas institute is required.
• The passage of the pressure balancing opening at the bottom of the communal air supply and flue gas outlet system is equal to 0.44 times the flue gas outlet surface.

The communal air supply and the communal output of the combustion gases may be carried out concentrically or separately.

Permitted pipe length

For parallel: Air supply and combustion gas outlet together, excluding the length of the combi feedthrough.

For concentric: total pipe length, excluding the length of the combi feedthrough.

	Parallel	Concentric 60/100	Concentric 80/125
EKOMB22AAV1H	100 m	10 m	29 m
EKOMB28AAV1H	85 m	10 m	29 m
EKOMB33AAV1H	80 m	10 m	29 m

The minimum diameters of the communal air supply and flue tube system based on addendum 2001-02 inspection requirements no. 138 of Gastec.

min.300 min.300 A B

	EKOMB22AAV1H and EKOMB28AAV1H				EKOMB33AAV1H
Number of units	Concentric		Parallel		Concentric		Parallel
	Flue outlet	Air inlet	Flue outlet	Air inlet	Flue outlet	Air inlet	Flue outlet	Air inlet
2	135	253	135	214	155	291	155	246
3	157	295	157	249	166	311	166	263
4	166	311	166	263	176	330	176	279
5	175	328	175	278	186	349	186	295
6	184	345	184	292	196	367	196	311
7	193	362	193	306	206	386	206	326
8	201	376	201	318	216	404	216	342
9	210	393	210	332	226	423	226	358
10	219	410	219	347	236	442	236	374
11	228	427	228	361	247	463	247	391
12	237	444	237	375	257	482	257	407
13	246	461	246	389	267	500	267	423
14	255	478	255	404	277	519	277	439
15	264	494	264	418	287	538	287	454
16	272	509	272	431	297	556	297	470
17	281	526	281	445	307	575	307	486
18	290	543	290	459	317	594	317	502
19	299	560	299	473	328	614	328	519
20	308	577	308	488	338	633	338	535

6.10.8 Concentric horizontal flue gas outlet, vertical part air-surrounded by shaft

Unit category : C93

A flue tube system according to C93 (C33) is permitted when using CE approved flue material or the flue material provided by Daikin.

The ponts below have to be considered.

General

• Flue outlet in shaft with 60 or 80 mm diameter (rigid or flexible).
• When using plastic flue pipe materials, a minimum temperature class of T120 applies.
• The transfer bend between concentric and vertical flue connection in the shaft must be supported in accordance with supplier instructions. The assembly instruction of the manufacturer for the flue system must always be followed in full.
• In existing installations, the shaft must be inspected and if necessary cleaned before the new installation is commissioned.
• The tightness of the shaft towards living spaces must be ensured.

Permitted pipe length and system requirements

When a shaft (e.g. a brickwork chimney) has the purpose of air intake the following requirements are applicable.

Flue gas pipe	Dimension shaft [mm]		Max. length [mtr]
Diameter (mm)(rigid or flexible)	Square	Round
DN 60	115 x 115	135	11
DN 80	135 x 135	155	29

Technical diagram of a pipe system with a blue-tinted duct and base, showing airflow direction (no text or symbols)

7 COMMISSIONING THE UNIT AND THE INSTALLATION

7.1 Filling and air purge of unit and installation

7.1.1 CH system

1. Insert the unit's plug into a socket.

The unit may carry out a self-check: 2 (on service display).

The unit will then go into the off setting: - (on service display) and the CH pressure is shown on the temperature display.

In case of a CH pressure lower than 0.5 bar, the CH pressure will be displayed flashing on the display. In the off setting, the CH pressure will be displayed.

1. Connect the filling hose to the fill/drain tap and fill the installation with clean drinking water, up to a pressure between 1 and 2 bar if the installation is cold (to be read from the temperature display).
2. Aerate the system with the manual aerator (A). Upon request, an automatic aerator can be fitted onto the unit instead of the manual aerator.
3. Aerate the installation with the manual aerators on the radiators.
4. Top up the CH installation if the pressure has dipped too low due to the aeration.
5. Check all couplings for leaks.
6. Check whether the siphon is filled with water.

WARNING

If the siphon is not filled with water, combustion gases may be released into the room.

WARNING

If an additive is added to the CH water, it must be suitable for the materials used in the unit, such as copper, brass, stainless steel, steel, plastic and rubber. The additive should preferably have a KIWA/ATA/Atest certification.

Technical line drawing of a mechanical component with labeled point A (no text or symbols beyond label)

7.1.2 DHWprovision

1. Open the main tap to bring theDHW section up to pressure.
2. Aerate the exchanger and the pipe system by opening a DHW tap. Leave the tap open until all air has flowed out of the system.
3. Check all couplings for leaks.

7.1.3 Gas supply

1. Aerate the gas pipe with the initial pressure measuring nipple (D) on the gas block.
2. Check all couplings for leaks.
3. Check the initial pressure and offset pressure (see par. 8.7).

Technical line drawing of a mechanical device with threaded shaft and housing (no text or symbols)

7.2 Commissioning the unit

1 2 3 4 5 6 7 8 A B C D E F G

Reading

1 On/off
2 CH operation or setting maximum CH temperature
3 Tap operation or setting tap temperature
4 Required temperature CH or tap water in °C / pressure CH water in bar / malfunction code
5 Tap comfort function eco
6 Tap comfort function on
7 Operating code
8 Flashing in case of a malfunction

Operating

A On/off button
B Tap/CH button, to set the required temperature
C - button
D + button
E Tap comfort function off / eco / on
F Service button / actual temperature during heat request
G Reset button

After the following actions have been completed, the unit may be commissioned.

1. Press the Ⓐ button to commission the unit.

The heat exchanger will be heated up, and on the service ✏ display, 3 4 and 7 appear (Depending on status of external eco switch and/or OpenTherm regulation).

1. Set the pump setting depending on the set maximum power and the water side resistance of the installation. For the water head of the pump and the loss of pressure of the unit: see par. 7.4.
2. Set the room thermostat higher than the room temperature. The unit will now go into CH operation: 5 on the service display.
3. Fire up the installation.
4. Check the temperature difference between the input and return of the unit and the radiators.

This should be approximately 20^ C. Set the maximum power on the service panel for this purpose (see par. 7.3). If necessary, set the pump setting and/or radiator shut-off valves. The standard setting of the pump is setting 3. The minimum feedthrough amounts to:

155 l/h at a set power of 5.4 kW

510 l/h at a set power of 17.8 kW

750 l/h at a set power of 26.2 kW

1150 l/h at a set power of 40.9 kW

1. Switch the unit off.
2. Purge the air from the unit and the installation after cooling down (top up if necessary).
3. Check the heating and the hot water provision for the correct functioning.
4. Instruct the user on the filling, air purging and functioning of the heating and the hot water provision.

Comments

• The unit is fitted with an electronic boiler controller which ignites the boiler controller and continuously monitors the flame, at every heat request from the heating or from the hot water provision.
• The circulation pump will run at every heat request for the heating. The pump has a post-running time of 1 minute. The post-running time can be changed upon request (see par. 7.3).
• 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 24 hours after the last heating request. To change the time, the room thermostat must be turned up for a moment at the requested time.
• For the hot water provision, the pump will not run.

7.3 Switching off the unit

CAUTION

Drain the unit and the installation, if the mains electricity supply is interrupted and there is a risk of freezing.

1. Remove the plug from the socket.
2. Drain the unit with the filling/draining tap.
3. Drain the installation at the lowest point.
4. Shut the main tap for the water supply from the hot water section.
5. Drain the unit by loosening the domestic hot water couplings under the unit.
6. Empty the siphon.

7.3.1 Frost protection

• In order to prevent the condense outlet from freezing, the unit must be installed in a frost-free room.
• 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 heat exchanger has warmed up sufficiently. If there is a risk of the installation (or a part thereof) freezing, the coldest place should be fitted with an (external) frost thermostat on the return pipe. This must be connected in accordance with the wiring diagram (see par. 11.2).

Note

If an (external) frost thermostat has been fitted on the installation and has been connected to the unit, it will not be active if the unit on the operating panel is switched off ( - on service display).

8 SETTING AND ADJUSTMENT

The functioning of the unit can be influenced by means of the (parameter) settings in the boiler controller. Part of this can be configured directly via the operating panel, another part can only be adjusted by means of the installers code.

8.1 Direct via operating panel

The following functions can be operated directly.

Unit on/off

The Ⓞ button activates the unit.

When the unit is active, the green LED above the Ⓑ button will be lit. When the unit is off, one bar will be lit on the service display ( - ) to show the unit is connected to the electricity supply. In this operation setting, the temperature display will also show the pressure in the CH installation (in bar).

Summer mode.

When parameter q is set to a value unlike 0 summer mode can be activated pressing the ① button.

In Summer mode the central heating has been shut off while DHW remains active.

Summer mode can be activated by pressing the ① button. again after activating the boiler.

On the display [So], [Su] or [Et] appears (the code on the display depends on the setting of parameter q).

Summer mode can be deactivated by pressing the ① button twice. The boiler will then be in normal functional mode again.

Tap comfort

The tap comfort function can be operated with the tap comfort button and has the following settings:

• On: (① LED on) The tap comfort function of the unit is continuously switched on. The heat exchanger is continuously kept warm. 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.) 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 desire for domestic hot water, or of immediate supply hereof, the tap comfort function can be switched off.

Resetting

Check the nature of the malfunction on the basis of the malfunction codes under par. 9.1 and if possible, resolve the cause of the malfunction before resetting the unit.

If a locking malfunction is indicated by means of a flashing LED above the 📊 button and a number on the ⚙ display, the unit can be restarted by pressing the reset ⚗ button.

Change settings of the various functions:

Pressing the ⚡ button for 2 seconds, will take you to the users setting menu (LED at 📄 and the number display will start to flash). If you press the ⚡ button repeatedly, a different function LED will flash each time. When the LED flashes, the appropriate function can be set with the + and - button. The set value is displayed on the ⚡ display.

The on/off button closes the settings menu and the changes are not saved.

The reset button closes the settings menu and saves the changes.

When no button is pressed for 30 seconds, the settings menu will automatically be closed and the changes are saved.

Maximum CH supply temperature

Press the button until the LED at starts flashing.

Use the + and - button to enter the temperature between 30°C and 90°C (standard setting 80°C).

Tap water temperature

Press the button until the LED at starts flashing.

Use the + and - button to enter the temperature between 40°C and 65°C (standard setting 60°C).

8.2 Parameter settings via the service code

The parameters of the boiler controller have been configured in the factory in accordance with the following table.

These parameters can only be changed with the service code. Take the following actions to activate the program memory:

1. Press the ✗ and the ⏻ button simultaneously, until a □ appears on the service display and a □ on the temperature display.
2. Use the + button to enter 15 (service code) on the temperature display.
3. Use the ↗ button to set the parameter you wish to configure, on the service display.
4. Use the + and — button to set the parameter to the required value (visible) on the temperature display.
5. After all the required changes have been entered, press the ↕ button until P appears on the service display. The boiler controller has now been reprogrammed.

Note

Pressing the Ⓐ button will take you out of the menu without saving the parameter changes.

Example: Changing from 'combi' to 'hot water only'

1. Press the ✅ and the ⏻ button simultaneously.
2. Use the + button to go to 75.
3. Press the ✿ button 1 x. A 0 and a 1 will appear on the display.
4. Use the + button to change the 0 to 2.
5. Press the ↙ button until P appears.
6. The change has now been implemented. The unit will only respond to a hot water request.

Parameter	Setting	EKOMB*AAV1H			Description
		22	28	33
0	Service code [15]	-	-	-	Access to installers settings, the service code must be entered (=15)
1	Installation type	0	0	0	0= combi1= space heating + hot water by means of storage tank2 = hot water only3 = space heating only
2	CH pump continuous	0	0	0	0= post-running pump only1= pump continuously active2 - 5 = not active
3	Set maximum CH power	70	70	70	Setting reach set value parameter c up to 85%
3.	Maximum capacity modulating CH pump	80	80	80	Setting reach set value parameter c. up to 100%
4	Set maximum hot water power	99	99	99	Setting reach set value parameter d up to 100% (=99 + 1x)
5	Min. leaving water temperature of the fuel line	25	25	25	Setting reach 10°C to set value parameter 5
5.	Max setting value leaving water temperature via operating panel	90	90	90	Setting reach 30°C to 90°C
6	Min. outdoor temperature of the fuel line	-7	-7	-7	Setting reach -30 to 10°C
7	Max. outdoor temperature of the fuel line	25	25	25	Setting reach 15°C to 30°C
8	CH pump post-running time after CH operation	1	1	1	Setting reach 0 to 15 minutes
9	CH pump post-running time after boiler operation	1	1	1	Setting reach 0 to 15 minutes(n/a for Combi unit)
A	Setting three-way valve or shut-off valve	0	0	0	0= powered during CH operation1= powered during hot water operation and rest2= three-way valve in CH setting if device not in rest3= zone regulation4 and higher = not active
b	Booster	1	1	0	Not applicable
C	Step-by-step modulation	1	1	1	0= step-by-step modulation off during CH operation1= step-by-step modulation on during CH operation
c	Minimum rpm CH	30	30	30	Settings reach 20 – 50%
c.	Minimum capacity modulating CH pump	40	40	40	Setting reach 15 to set value par. 3.
d	Minimum rpm hot water	30	25	25	Settings reach 20 – 50%
E	Min. leaving water temperature at OT (OpenTherm) or RF thermostat	30	30	30	Settings reach 10 – 60°C
E.	Reaction OT and RF room thermostat	1	1	1	0= do not respond to hot water request if requested temperature is lower than the set value par. E1= respond to hot water request with minimum leaving water temperature limited to set value par. E2= respond to hot water request with maximum leaving water temperature (on/off function)3= Low load controlled by Open Therm room thermostat enabled
F	Start rpm CH	70	60	50	Settings reach 40 – 99% of the set maximum rpm
F.	Start rpm hot water	70	60	50	Settings reach 40 – 99% of the set maximum rpm
h	Max. rpm fan (* 100 rpm)	45	46	46	Settings reach 40 – 50 (factory setting)This parameter can be used to set the maximum rpm
J	Not applicable	-	-	-	Not applicable
n	Regulated temperature during boiler operation (Ta)	85	85	85	Setting reach 60°C - 90°C
L	Legionella protection	0	0	0	Not applicable (for Solo boilers with external DHW tank only)
n.	Hot water temperature at Comfort/Eco	0	0	0	Setting reach: 0 or 40°C – 60°C0= reheating temperature is equal to hot water temperature
O.	Wait time CH request response	0	0	0	Settings reach 0 – 15 minutes
o	Waiting time CH operation after hot water operation	0	0	0	Settings reach 0 – 15 minutes
o.	Number of eco days	3	3	3	Settings reach 0, 1 — 100 = Comfort function controllable by Open Therm room thermostat1 – 10 number of eco days
P	Anti-recycling time during CH operation	5	5	5	Minimum switch off time on CH operationCan be set to 0 - 15 minutes
P.	Reference value hot water	2436	3036	36	0 = Flow switch applicable24 = EKOMB22AAV1H30 = EKOMB28AAV1H36 = EKOMB33AAV1H
q	Summer mode	0	0	0	0 = Summer mode deactivated1 = Summer mode to be activated by 1button(code in display : Su)2 = Summer mode to be activated by 1button(code in display : So)3 = Summer mode to be activated by 1button(code in display : Et)
r	Heating curve coefficient	0	0	0	Not applicable

8.3 Setting maximum CH power

The maximum CH power is set to 70% in the factory. If more power is required for the CH installation, the maximum CH power can be changed by adjusting the rpm of the fan. See table: Setting CH power.

This table shows the relation between the rpm of the fan and the unit power.

Desired CH power in kW (approx.)			Settings on service display(in % maximum rpm)
EKOMB*AAV1H
22	28	33
17.8	22.6	26.2	± 83
14.8	19.1	22.0	70
12.7	16.4	19.0	60
10.6	13.7	15.9	50
8.3	11.0	12.7	40
6.4	8.3	9.6	30
5.4	6.9	7.0	25

Caution:

The power is slowly increased when the fire is lit and is lowered when the set leaving water temperature is reached (modulation on Ta).

8.4 Setting pump setting

The EKOMB*AAV1H CH boilers are fitted with a modulating A-class pump which modulates on the basis to the CH power provided. The minimum and maximum capacity of the pump can be adjusted with the parameters 3 and c. Also see par. 7.2. The set value of parameter 3. (max. pump setting) is the percentage of the maximum pump capacity and is linked to the set maximum CH power as set with parameter 3. The set value of parameter c. (min. pump setting) is linked to the minimum CH-power as set with parameter c

If the CH load modulates between the minimum and maximum value, the pump capacity will modulate along proportionately.

Pressure loss graph unit CH side

A. EKOMB22AAV1H
B. EKOMB28AAV1H
C. EKOMB33AAV1H

8.5 Weather dependent regulation

When connecting an outdoor sensor, the leaving water temperature is automatically regulated dependent on the outdoor temperature, in accordance with the set fuel line. The maximum leaving water temperature (T max) is set via the display. If so desired, the fuel line can be changed by using the service code (see par.7.3).

Fuel line graph

X. T outside in °C
Y. T leaving water in °C

A. Factory setting

$$ \left(\text { Tmax CH } = 8 0 ^ {\circ} \mathrm{C}, \text { Tmin CH } = 2 5 ^ {\circ} \mathrm{C}, \text { Tmin ex } = - 7 ^ {\circ} \mathrm{C}, \text { Tmax ex } = 2 5 ^ {\circ} \mathrm{C}\right) $$

B. Example

$$ (T \max C H = 6 0 ^ {\circ} C, T \min C H = 2 5 ^ {\circ} C, T \min e x = - 7 ^ {\circ} C, T \max e x = 2 5 ^ {\circ} C) $$

Technical line drawing of a mechanical pump or motor assembly (no text or symbols)

8.6 Conversion to different type of gas

CAUTION

Work on gas carrying parts may only be carried out by a certified installer.

If a unit is connected to a different type of gas than the one it has been set to by the manufacturer, the gas dosing ring must be replaced. Conversion sets for other types of gas are available to order.

Converting the dosing ring

1. Switch off the boiler and remove the plug from the socket.
2. Shut the gas valve.
3. Remove the front panel from the unit.
4. Loosen the coupling (A) above the gas block and turn the gas mixing tube (B) backwards.
5. Replace the O-ring (C) and the gas dosing ring (D) by the rings in the conversion set.
6. Reassemble it in reverse order.
7. Open the gas valve.
8. Check whether the gas couplings before the gas block are sealed.
9. Enter the plug in the socket and switch on the boiler.
10. Check whether the gas couplings after the gas block are sealed (during operation).
11. Now check the setting of the gas/air ratio (see par. 8.8).
12. Put a sticker of the configured gas type on top of the existing sticker at the gas block.
13. Put a sticker of the configured gas type at the type plate.
14. Return the front panel onto the unit.

8.7 Gas/air regulation

The gas/air regulation has been set at the factory and does not require any adjustments, in principle.

The setting can be checked by measuring the CO_2 percentage in the combustion gases or by measuring the pressure difference.

In case of any disturbance, replacement of the gas block or conversion to a different type of gas, the regulation must be checked and set in accordance with the following table.

Gas type	Natural gas H	Propane P
Gas category	2E/H G20	3P / G3130 / 37 / 50
CO2% on Low setting (L) (and —)With open cover	See par. 8.8
CO2% at High setting (H) (and 2x)With open cover	See par. 8.8
Initial gas pressure (mbar)	20	50

F B A C D

Gas dosing ring	Natural gas H	Propane P
EKOMB22AAV1H	600	480
EKOMB28AAV1H, EKOMB33AAV1H	655	525

CAUTION

CO2 check must be carried out with open cover. If the cover is shut, the CO2% may be higher than the values stated in the above table.

8.8 Setting gas/air regulation

The CO_2 setting has been set at the factory and does not require any adjustments, in principle. The setting can be checked by measuring the CO_2 percentage in the combustion gases. In case of any disturbance of the setting, the replacement of the gas valve or the conversion to a different type of gas must be checked, and if necessary set in accordance with the following instructions. Always check the CO_2 percentage when the lid is open.

Checking the carbon dioxide setting

1 Switch off the heat pump module with the user interface.
2 Switch off the gas boiler with the ① button. - appears on the service display.
3 Remove the front panel from the gas boiler.
4 Remove the cover from the sample point (X) and enter an appropriate chimney analysis probe.

IMPORTANT

Ensure the start-up procedure of the analysis machine has been completed before inserting the probe in the sample point.

IMPORTANT

Wait for the gas boiler to run stable. Faulty measurements may occur if the measuring probe is connected before the boiler is running stable.

5 Switch on the gas boiler with the ① button and create a request for space heating.

6 Select the High setting by twice pressing the and + buttons simultaneously. A capital letter "H" will appear on the service display. The user display will show a Busy symbol. Do NOT carry out a test when a small letter "h" is shown. If this is the case, press and again.

7 Allow the display values to stabilize. Wait at least 3 minutes and compare the CO _2 percentage to the values in the following table.

CO2value at maximum power	Natural gas G20 (20 mbar)	Propane G31 (30/37/50 mbar)
Maximum value	9.6	10.8
Minimum value	8.4	9.8

8 Note the CO _2 percentage at maximum power. This is important in relation to the following steps.

IMPORTANT

It is NOT possible to adjust the CO2 percentage when the test program is being carried out. If the CO2 percentage deviates from the values in the above table, contact your local service department.

9 Select the High setting by once pressing the ⚙ and — buttons simultaneously. "L" appears on the service display. The user display will show a Busy symbol.

10 Allow the display values to stabilize. Wait at least 3 minutes and compare the CO₂ percentage to the values in the following table.

CO2value at minimum power	Natural gas G20 (20 mbar)	Propane G31 (30/37/50 mbar)
Maximum value	(a)
Minimum value	8.4	9.4

(a) CO _2 value at maximum power registered at setting High.

Technical line drawing of a rectangular battery casing with two labeled ports (X and Y), no text or symbols present.

11 If the CO_2 percentage at maximum and minimum power is within the reach stated in the above tables, the CO_2 setting of the boiler is correct. If NOT, adjust the CO_22 setting in accordance with the instruction in the following chapter.
12 Switch off the unit by pressing the ① button and return the sample point to its position. Make sure it is gas tight.
13 Return the front panel to its place.

CAUTION

Work on gas carrying parts may ONLY be carried out by qualified, competent individuals.

Adjusting the carbon dioxide setting

IMPORTANT

Only adjust the CO_2 setting when you have first checked it and you have made sure the adjustment is necessary. No adjustments may be made to the gas valve without prior permission from your local Daikin distributor. In Belgium, the gas valve may NOT be adjusted and/or the seal may NOT be removed or broken. Contact your distributor.

1 Remove the cap (A) which covers the adjuster screw.
2 Turn the screw (B) to the right to increase the CO _2 percentage, and to the left to decrease it. See the following table for the desired value.

Measured value at maximum power	Set values CO2(%) at minimum power (front lid open)
	Natural gas 2H (G20, 20 mbar)	Propane 3P (G31,30/50/37 mbar)
10.8	-	10.5±0.1
10.6		10.3±0.1
10.4		10.1±0.1
10.2		9.9±0.1
10		9.8±0.1
9.8		9.6±0.1
9.6	9.0±0.1	-
9.4	8.9±0.1
9.2	8.8±0.1
9.0	8.7±0.1
8.8	8.6±0.1
8.6	8.5±0.1

Technical diagram of a mechanical assembly with labeled parts A and B, showing internal components and mounting points.

3 After measuring the CO2 percentage and adjusting the setting, replace the cover cap and the cap of the sample point. Make sure they are gas tight.
4 Select the High setting by twice pressing the √ and + buttons simultaneously. A capital letter will appear on the service display.
5 Measure the CO_2 percentage. If the CO_2 percentage still deviates from the values in the table which indicates the CO_2 percentage at maximum power, contact your local distributor.
6 Press + and - simultaneously to leave the test program.
7 Return the front panel to its place.

9 MALFUNCTIONS

9.1 Show last malfunction

Use the Ⓞ key to switch the unit off, and press the button.

The red malfunction LED is lit continuously, and the latest fault code is shown flashing on the temperature display.

If the unit has never detected a locking malfunction, no code will be displayed.

The last locking malfunction can be deleted by briefly pressing the ✿ button while pressing the — button.

9.2 Malfunction codes

If the malfunction LED is flashing, the boiler controller detects a fault. A malfunction code will be shown on the temperature display.

When the malfunction is rectified, the boiler controller can be restarted by pressing the reset ↩ button.

The following faults can be distinguished:

Temperature display	Description	Possible cause/solution
		Unit is off.
10, 11, 12, 13, 14	Sensor fault S1	Air in the installation. Purge the air from the boiler and CH installation.Check the connection of ntc on the hot water tube.Check wiring for break.Replace S1.
20, 21, 22, 23, 24	Sensor fault S2	Check wiring for break.Replace S2.
0	Sensor fault after self-check	Replace S1 and/or S2.
1	Temperature too high	Air in installation. Purge the air from the boiler and CH installation.Pump is not running. Insert a screwdriver into the slot of the pump shaft and turn the shaft. Check the wiring between the pump and the boiler controller.Too little flow in installation, closed radiators, pump setting too low.
2	Switch S1 and S2	Check cable harness.Replace S1 or S2.
4	No flame signal	Main gas valve not opened.Gas supply pressure too low, or disappears.Condense output blocked.Check ignition unit and ignition cable.No or incorrect ignition distance.Gas block or ignition unit is not receiving electrical current.Check earthing.
5	Poor flame signal	Condense output blocked.Gas supply pressure too low, or disappears.Check ignition unit and ignition cable.Check setting of gas block.Check earthing.Check air supply and gas output for possible recirculation of flue gases.
6	Flame detection error	Replace ignition cable + spark plug.Replace ignition unit.Replace boiler controller.
8	Fan rpm is not correct	Fan is coming up against cover insulation.Wiring between fan and cover.Check the wiring for faulty contact wire.Check and/or replace fan.Replace boiler controller.
27	Short circuit outdoor sensor	Check the wiring of the outdoor sensor.Replace outdoor sensor.boiler controller is not suitable for this application.Replace boiler controller for the appropriate version.
29,30	Gas valve controller fault	Replace boiler controller.

Only replace faulty parts with the original Daikin parts.

Failing to fit or incorrectly fitting the sensors S1 and/or S2 may lead to serious damage.

9.3 Other faults

9.3.1 Boiler controller is noisy when igniting

graph TD
    A["Possible causes:"] --> B["Gas supply pressure too high."]
    B --> C{No}
    C --> D["Incorrect ignition distance."]
    D --> E{No}
    E --> F["Gas/air regulation not correctly configured."]
    F --> G{No}
    G --> H["Weak spark."]

    I["Solution:"] --> J["The home pressure controller may be faulty. Contact the energy company."]
    K["Solution"] --> L["Check the ignition pin distance. Replace the ignition pin."]
    M["Solution"] --> N["Check the setting, see gas/air regulation."]
    O["Solution"] --> P["Check the ignition distance. Check and/or replace ignition cable. Replace the ignition unit on the gas block. Replace the ignition pin."]

Checking mold ignition pin position

Pin must touch test tool Pin must not touch test tool

9.3.2 Boiler controller resonates

graph TD
    A["Possible causes:"] --> B["Gas supply pressure too low."]
    B --> C{No}
    C --> D["Recirculation combustion gases."]
    D --> E{Yes}
    E --> F["Gas/air regulation not configured correctly."]
    F --> G{No}
    G --> H["Boiler controller gasket faulty."]
    H --> I{Yes}
    I --> J["Boiler controller faulty."]
    J --> K{No}
    K --> L["Boiler controller faulty."]
    L --> M{Yes}
    M --> N["Solution: The home pressure controller may be faulty. Contact the gas company."]
    N --> O["Check the combustion gas outlet and air supply."]
    O --> P["Check the setting, see gas/air regulation."]
    P --> Q["Replace the boiler controller gasket."]
    Q --> R["Replace the boiler controller."]

9.3.3 No heating (CH)

graph TD
    A["Possible causes:"] --> B["The service display shows a hyphen ( - ). The boiler is off."]
    B --> C{No}
    C --> D["Room thermostat/weather dependent regulation not closed or faulty."]
    D --> E{Yes}
    E --> F{Check the wiring. Check OpenTherm and On/off connection of the unit. Replace the thermostat. Replace the weather-dependent regulation.}
    F --> G{No}
    G --> H["Pump is not running. Display shows 80 and 1."]
    H --> I{Yes}
    I --> J{Check the electricity supply. Check connector X2. Insert a screwdriver into the slot of the pump shaft and turn the shaft. Replace faulty pump.}
    J --> K{No}
    K --> L["No electrical supply (24 V)."]
    L --> M{Yes}
    M --> N{Replace the faulty controller. Check the wiring in accordance with the diagram. Check the connector X4. Replace the faulty controller.}
    N --> O["Solution: Switch on the boiler with the Button."]

9.3.4 The power is reduced

Possible causes:

At a high level of rpm, the power has decreased by more than 5%.

Yes →

Solution:

Check the unit, siphon and output system for contamination. Clean unit, siphon and output system.

9.3.5 CH is not reaching correct temperature

Possible causes:

Water pressure in installation is too low

Yes →

Solution:

Fill up the installation.

Setting of room thermostat is not correct.

Yes →

Check the setting and adjust if required.

No ↓

Temperature is set too low.

Yes →

Increase the CH temperature. See Operation CH. If there is an outdoor sensor: Check the outdoor sensor for short circuit: rectify this.

No ↓

Pump does not run properly. Pump setting is too low.

Yes →

Increase the pump setting or replace the pump.

No ↓

No flow through the installation.

Yes →

Check whether there is a flow through the installation: at least 2 or 3 radiators must be open.

No ↓

The boiler power is not set for the installation.

Yes →

Adjust the power. See Setting maximum CH power.

No ↓

No heat transfer due to contamination in the exchanger/installation.

Yes →

Rinse the exchanger/installation on the side of the CH.

9.3.6 No domestic hot water

Possible causes:

The service display shows nothing.

Yes →

Solution:

Check whether the plug is in the socket.

No ↓

The service display shows nothing.

Yes →

Check the fuse, see Electrical diagram par. 10.1

No ↓

Flow sensor does not work.

Yes →

Replace the flow sensor.

No ↓

Tap flow < 1,5 l/min.

Yes →

Increase the tap flow.

No ↓

No electricity supply on flow sensor (5V DC).

Yes →

Check the wiring in accordance with the diagram.

No ↓

S3 faulty.

Yes →

Replace S3.

No ↓

The thermostatic shower or bath tap is faulty.

Yes →

The thermostatic tap only lets through cold water. This means the tap flow through the boiler remains under 1,5. l/min. Check the thermostatic tap.

9.3.7 DHW is not reaching the correct temperature

Possible causes:

Tap flow too high.

Yes →

Solution/cause:

Reduce the tap flow. Check the dosing disk (EKOMB22AAV1H and EKOMB28AAV1H)

No ↓

CH becomes hot during tapping.

Yes →

Unwanted circulation in the CH circuit due to thermosiphon effect or second pump in the CH circuit. Install a check valve in case of thermosiphon effect or a two-way valve in case of a second pump.

DHW temperature set too low.

Yes →

Increase the DHW temperature, see par. 7.1.

No ↓

Insufficient heat transfer due to lime scale or contamination in the CH boiler on the tap water side.

Yes ➔

Remove lime scale or rinse the CH boiler on the tap water side.

9.3.8 CH installation stays warm unwanted

Possible causes:		Solution/cause:
Room thermostat/weather dependent regulation faulty or short circuited.	Yes ➔	Check the wiring.Check OpenTherm and On/off connection of the unit.Replace the thermostat.Replace the weather-dependent regulation.
No ➔
CH installation is heated due to Tap comfort.The service display regularly shows code 7.	Yes ➔	Unwanted circulation in the CH circuit due to thermosiphon effect or second pump in the CH circuit. Install a check valve in case of thermosiphon effect or a two-way valve in case of a second pump.

9.3.9 A-label pump LED flashes intermittently red/green

Possible causes:		Solution:
Too high or too low mains voltage.	Yes ➔	Check the mains voltage.
No ↓
Pump temperature is too high.	Yes ➔	Check the water and ambient temperature.

9.3.10 A-label pump LED flashes red

Possible causes:		Solution:
Pump stopped.	Yes ➔	Reset the pump by switching off the unit by pressing the on/off button for at least 20 seconds (attention: if the pump has been set to continuous, the pump can only be reset by pulling the plug from the socket).Replace the pump.

10 MAINTENANCE

The unit and the installation must be checked by a certified installer, and cleaned if necessary.

CAUTION

Work on gas carrying parts may only be carried out by a certified installer.

After work, check the flue gas carrying parts for air tightness. If the unit has just been operational, some parts may be hot.

10.1.1 Disassembly

1. Switch the unit off with the Ⓐ button.
2. Remove the plug from the socket.
3. Shut the gas valve.
4. Open the display valve and loosen the two screws on the left and right of the display, and remove the front panel.
5. Wait until the unit has cooled down.
6. Unscrew the coupling nut at the bottom of the flue tube to the left.
7. Slide the flue pipe upwards (1) with a turn to the left until the bottom of the pipe reaches above the coupling of the condense outlet container. Pull the bottom of the pipe forward (2) and remove the pipe by rotating it to the left and down (3).
8. Lift the condense outlet tray from the connection of the siphon (4) on the left, and turn it to the right with the siphon connection over the edge of the lower tray (5). Push down the condense outlet tray at the back from the connection to the heat exchanger (6) and remove it from the unit.
9. Take the connector from the fan and the ignition unit from the gas block.
10. Disconnect the coupling under the gas block.
11. Unscrew the shouldered bolts (Allen bolts) of the front lid and remove it to the front, complete with gas block and fan (be careful not to damage the boiler controller, insulation plate, gas block, gas pipe and fan). Lay the removed front lid with the foot rests horizontally on a flat surface.
12. The boiler controller and the integrated insulation plate do not require any maintenance (do not need cleaning). Therefore never use a brush or compressed air to clean these parts, in order to avoid dust developing.

Mechanical assembly diagram showing a rotating component with directional arrows indicating motion (no text or symbols)

Technical diagram of a mechanical device with numbered components labeled 1, 2, and 3

6 5 4

1. Disassemble the dam strips which are positioned across the plates of the heat exchanger.

10.1.2 Cleaning

1. Clean the retarders and the plates of the heat exchanger with a brush or vacuum cleaner, from top to bottom.
2. Clean the bottom of the heat exchanger.
3. Clean the condense outlet tray with water.
4. Clean the siphon with water.
5. Clean the inside and bottom of the front plate with a soft brush.

CAUTION

The integrated insulation plate and boiler controller gasket contain ceramic fibers.

10.1.3 Fitting

During maintenance the seal front plate needs to be replaced. When assembling, check the other seals for damages, hardening, (hairline) fractures and/or discoloration. Where necessary, place a new seal. Also check the correct positioning. If retarders are not fitted, or incorrectly fitted, it may lead to serious damage.

1. Place the retarders in the heat exchanger.
2. Check that between the flange of the shoulder bolt and the front plate, there is a thin layer of ceramic grease.
   If there is no or insufficient grease, it must be applied (see image).

3. Note: Replace the seal around the front cover. Clean the seal ring chamber with a soft brush and make sure the new o-ring is pressed in well all around. Avoid stretching or tearing. Place the front plate on the heat exchanger and secure it with the special shoulder bolts (Allen bolts).). Make sure that the o-ring remains in place when installing the front plate. Evenly tighten the shoulder bolts crosswise manually (10 – 12 Nm). For the sequence of tightening, see image. Please note: The front plate in the image has 11 shoulder bolts (EKOMB28AAV1H, EKOMB33AAV1H). The front plate of the EKOMB22AAV1H has 9 shoulder bolts.

4. Evenly manually tighten the boiler controller bolts crosswise.

5. Fit the gas coupling under the gas block.

6. Fit the connector onto the fan and the ignition unit onto the gas block.

7. Fit the condense outlet tray by sliding it into the outlet stump of the switcher (1), with the siphon connection, before the lower tray. Then turn the condense outlet tray to the left (2) and push it down into the siphon connection (3). Make sure that the rear of the condense outlet tray ends up resting on the tab at the back of the lower tray (A).

8. Fill the siphon with water and fit it onto the connection under the condense outlet tray.

9. Slide the flue gas pipe, while turning it to the left, with its top around the flue gas adapter in the top lid. Insert the bottom into the condense outlet tray, drag the gasket down and tighten the swivel nut to the right.

10. Open the gas valve and check the gas couplings under the gas block and on the assembly bracket for leakage.

11. Check the CH and the water pipes for leakage.

12. Insert the plug into the socket.

13. Switch the unit on with the Ⓐ button.

14. Check the front lid, the connection of the fan to the front lid and the flue tube parts for leaks.

15. Check the gas-air regulation (see par. 8.7) and check the gas coupling on the gas block for gas tightness.

16. Assemble the cover and tighten the two screws to the left and the right of the display, and close the display cover.

17. Check the heating and the hot water provision for correct functioning.

Technical diagram showing a hand using a tool to adjust or install a mechanical component, with arrows indicating the process.

8 7 6 9 3 2 4 1 5 10 11

1 A 2 3

11 TECHNICAL SPECIFICATIONS

Model name	EKOMB22AAV1H	EKOMB28AAV1H	EKOMB33AAV1H
Condensing boiler	Yes	Yes	Yes
Low temperature boiler	No	No	No
B1 boiler	No	No	No
Combination heater	Yes	Yes	Yes

Domestic water
Nom. load upper value, Qn (Hs)	kW	6,2 – 24,6	7,9 – 31,1	8,0 – 36,3
Nom. load lower value, Qn (Hi)	kW	5,6 – 22,1	7,1 – 28,0	7,2 – 32,7
Domestic water threshold	l/min	2
Domestic water quantity 60°C	l/min	6	7,5	9
Domestic water quantity 40°C (mixed)	l/min	10	12,5	15
Domestic water temperature	°C	60
Domestic water side pressure difference	kPa	See par. 6.2

CH
Nom. load upper value, Qn (Hs)	kW	6,2 – 20,8	7,9 – 26,3	8,0 – 30,3
Nom. load lower value, Qn (Hi)	kW	5,6 – 18,7	7,1 – 23,7	7,2 – 27,3
Nom. output Pn	kW	6,0 - 17,8	7,7 - 22,8	7,8 - 26,3
Max. CH water pressure PMS	bar	3
Max. CH water temperature	°C	90

Other data
Gas consumption G25 (1)	m3/h	0,67 – 2,65	0,85 – 3,36	0,86 – 3,93
Gas consumption G20 (1)	m3/h	0,58 – 2,29	0,74 – 2,91	0,75 – 3,39
Gas consumption G31 (1)	m3/h	0,22 – 0,87	0,28 – 1,11	0,28 – 1,29
Pressure loss of the unit (CH)	mH2O	See par. 8.4
Max. Flue gas temperature DHW	°C	90	90	90
Mass.flow flue gas (max)	g/s	10,3	13,0	14,9
Available fan pressure	Pa	75	75	75
NOx class		6	6	6
NOx	mg/kWh	33	44	34
P1, at 30% of Rated input (30/37)	kW	6,0	7,7	8,9
P4, Rated output (80/60)	kW	17,8	22,8	26,3
η 1, Efficiency at P1	%	96,4	97,1	97,7
η 4, Efficiency at P4	%	85,9	86,6	86,9
Standby heat loss, Pstby	kW	0,037	0,037	0,038
Daily fuel consumption, Qfuel	kWh	14,691	23,45	23,393
Daily electricity consumption, Qelec	kWh	0,064	0,075	0,074

Electrical data
Mains voltage	V	230
Safety class	IP	IPX4D, (B23, B33 = IP20)
Absorbed power: full load	W	80
Absorbed power: standby	W	2
Auxiliary electricity consumption at full load (elmax)	kW	0,035	0,035	0,035
Auxiliary electricity consumption at part load (elmin)	kW	0,015	0,015	0,015
Auxiliary electricity consumption in stand by mode (Pstby)	kW	0,002	0,002	0,002

Installation measurements and weight
Height	mm	590	650	710
Width	mm	450
Depth	mm	240
Weight	kg	30	33	36

Gas category (1) (EN 15502)

B23; B33; C13x; C33x; C43x; C53x; C63x; C83x: C93x

Destination country	Boiler categorie (EN437)	Gas type and gas inlet pressure (EN 437)
IT	II2H3P	G20, 20 mbar, G31: 37 mbar
FR	II2Esi3P	G20, 20 mbar, G25: 25 mbar, G31: 37 mbar
BE	I2E(S)	G20, 20 mbar, G25: 25 mbar
PL	II2E3P	G20, 20 mbar, G31: 37 mbar
GR	II2H3P	G20, 20 mbar, G31: 37 mbar
PT	II2H3P	G20, 20 mbar, G31: 37 mbar

(1) G20 – Natural gas E/H
G25 – Natural gas LL/L
G31 – Liquefied Propane gas

11.1 Technical Product Fiche in accordance to CELEX-32013R0811

Supplier			Daikin Europe NVZandvoordestraat 3008400 OostendeBelgium
Type designation			EKOMB22AAV1H	EKOMB28AAV1H	EKOMB33AAV1H
Seasonal space heating energy efficiency class	-	-	A	A	A
Heat rated output	Prated	kW	18	23	26
Annual energy consumption	QHE	GJ	37	46	51
Seasonal space heating energy efficiency	ηs	%	91	92	93
Sound power level	LWA	dB	45	45	45
Declared load profile	-	-	L	XL	XL
Water heating energy efficiency class	-	-	A	A	A
Annual electricity consumption	AEC	kWh	14	16	16
Annual fuel consumption	AFC	GJ	12	18	18
Water heating energy efficiency	ηWH	%	78	81	81
Efficiency class controller			II	II	II
Contribution to yearly efficiency		%	2,0	2,0	2,0
IMPORTANTPlease read all instructions before fitting this appliance.This appliance is not intended for use of persons (including children) with diminished physical, sensory or mental ability, or lack of experience and knowledge, unless supervised by, or instruction about the use of the appliance by a person who is responsible for their safety.The appliance and installation should every year be inspected by an qualified installer and cleaned when necessary.The appliance can be cleaned with a damp cloth. Don't use aggressive or abrasive cleaning- or solvent

11.2 Electrical diagram EKOMB22AAV1H, EKOMB28AAV1H & EKOMB33AAV1H

A	Earth connection exchanger	F	Fuse (3.15 A T)	P1	CH pump	S3	DHW sensor
B	Ignition plug	G	Gas block + ignition module	R	Resistance	S5	Mass flow sensor
C	Boiler controller	I	Ignition/ionization pin	S1	Flow temperature sensor	S7	CH water pressure sensor
E	Earth connections	M	Mains electricity supply	S2	Return temperature sensor	V	Fan

S1 S2 S7 S3 S5 C X4 X3 V M 230V~/ 50Hz P1 A E B I G (230V~) X2 X1 (230V~) 3-4 = ? 2-3 = G 1 = ? 6 = 0 V 9 = 0 V 11 = 0 V 1 = 0 V 2 = 24 V= 3 = Tacho 4 = Pwm 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

Connector X424V=	5 - ÷	[IMAGE]	CH pump (5= PWM signal (red), E=earth)
	6-7	[IMAGE]	On/off room thermostat (0.1A-24Vdc) and/or frost thermostat
	8-9	[IMAGE]	Outdoor sensor (12 kOhm / 25°C)
	11-12	[IMAGE]	OpenTherm room thermostat (6-7 should be open)
Connector X2230V~	2-4	[IMAGE]	Mains supply 230 V (2 = L (brown), 4 = N (blue))
	7-8	[IMAGE]	CH pump (8 = L (brown), 7 = N (blue)
	3-5-6	[IMAGE]	Shut-off valve underfloor heating (3 = L (brown), 5 = Switch (black), 6 = N (blue)(e.g. EK3WV1AA)
Connector X5		[IMAGE]	Computer interface

11.3 NTC resistances

NTC 12 kOhm
T [°C]	R [ohm]	T [°C]	R [ohm]	T [°C]	R [ohm]	T [°C]	R [ohm]
-15	76020	15	18300	45	5522	75	1994
-10	58880	20	14770	50	4609	80	1717
-5	45950	25	12000	55	3863	85	1467
0	36130	30	9805	60	3253	90	1266
5	28600	35	8055	65	2752	95	1096
10	22800	40	6653	70	2337	100	952

12 WARRANTY CONDITIONS

The general warranty conditions of Daikin Europe NV apply to this product.

The warranty is void if it is determined that the faults, damages, or undue wear are attributable to improper use or inexpert treatment or inexpert repair, setting, installation or maintenance, by non-certified installers, or that it was exposed to substances with aggressive chemicals (incl. hair spray) and other damaging substances.

The warranty also becomes void when pipes and couplings have been applied in the installation which may cause oxygen diffusion, or the defect is a consequence of lime scale (damaging to the unit and installation). Surface damage as well as transport damage is included under the warranty. The entitlement to warranty becomes void if it cannot be proven that the CH boiler has been subjected to maintenance by a certified installer at least once a year from the commissioning date. The instructions for installation and use which we provide for units must be followed in full.

Environment

If the unit is due for replacement, it can usually be taken back by your dealer, following consultation. Should this not be possible, consult your council for the possibilities for recycling or environmentally friendly processing of used materials.

Various plastics and metals were used in the manufacturing of the unit. Furthermore, the unit contains electrical components which belong with electronic waste.

Use as intended

The unit, as described in this documentation is intended for heating spaces via a central heating installation and/or the supply of hot water. Any other usage falls outside the intended use of the unit. No liability can be accepted on damage arising from incorrect use.

INHALTSVERZEICHNIS

© 2022 Daikin Europe NV

Line drawing of a rectangular electronic device with a cylindrical top and mounting ports (no text or symbols)

M J K D R E H P I O N Q L T F G B A U C S

A. ZH-Pumpe

B. Gasventil

4.2 Installationsort

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram of a device with labeled parts and directional arrows indicating movement or assembly

4.3 Montage

Technical line drawings of mechanical components with screws and bolts (no text or symbols)

Technical line drawing of a mechanical device with internal components and connectors (no text or symbols)

Technical diagram of a mechanical device with labeled parts A, B, and C, including a close-up view and a small icon labeled 'i'.

E D C F

Technical line drawing of a mechanical assembly with mounting brackets and bolts (no text or symbols)

5 ANSCHLIEßen

Technical diagram showing mechanical assembly with labeled parts A and B, likely for assembly or maintenance instructions.

A B 030601014

graph TD
    A["Component A"] -->|Flow| B["Component B"]
    B -->|Control| C["Component C"]
    C -->|Flow| D["Component D"]
    D -->|Control| E["Component E"]
    E -->|Flow| F["Component F"]
    F -->|Control| G["Component G"]
    G -->|Flow| H["Component H"]
    H -->|Control| A
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#fff,stroke:#333
    style H fill:#fff,stroke:#333

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or force, including numbered annotations 1 and 2.

Commu 24

X5 X4

Diagram showing electrical circuit components with symbols for temperature, voltage, and current indicators

Technical diagram of a mechanical assembly with multiple cylindrical components and a labeled point E (no text or symbols beyond label)

Technical diagram of a pipe system with a blue duct and support structure, showing airflow direction (no text or labels)

6 INBETRIEBNAHME DES GERÄTS UND DER INSTALLATION

Technical line drawing of a mechanical component with labeled point A (no text or symbols beyond label)

Technical line drawing of a mechanical assembly with threaded component and labeled part D (no text or symbols beyond label)

$$ (T \max Z H = 8 0 ^ {\circ} C, T \min Z H = 2 5 ^ {\circ} C, T \min a u \beta e n = - 7 ^ {\circ} C, $$

$$ \text { Tmax außen } = 2 5 ^ {\circ} \mathrm{C}) $$

B. Beispiel

$$ (\text { Tmax } Z H = 6 0 ^ {\circ} \text { C }, \text { Tmin } Z H = 2 5 ^ {\circ} \text { C }, \text { Tmin außen } = - 7 ^ {\circ} \text { C }, $$

$$ \text { Tmax außen } = 2 5 ^ {\circ} \mathrm{C}) $$

Technical line drawing of a mechanical pump or motor assembly (no text or symbols)

Technical line drawing of a rectangular battery casing with labeled ports X and Y (no text or symbols beyond labels)

Technical diagram of a mechanical assembly with labeled parts A and B, showing internal components and connections.

8 STÖRUNGEN

Mechanical assembly diagram showing a rotating component with directional arrow (no text or symbols)

Technical diagram of a mechanical device with numbered components labeled 1, 2, and 3

6 5 4

9.1.3 Montage

Technical diagram showing a hand using a tool to adjust or install a mechanical component, with three steps and directional arrows indicating assembly.

8 7 6 2 4 1 3 5 10 11 9

1 A 2 3

10 TECHNISCHE DATEN

© 2022 Daikin Europe NV

Line drawing of a rectangular electronic device with a cylindrical top and mounting base (no text or symbols)

2 Autotest

M J K D R E H P I O N Q L T F G B A U C S

A. Pompe CH

B. Vanne de gaz

N. Bloc raccord/barrette de raccordement X4

O. Bac de purge de condensat

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or assembly.

4.3 Assemblage

Technical line drawings of mechanical components with screws and bolts (no text or symbols)

Technical line drawing of an electrical enclosure with internal wiring and multiple connectors (no text or symbols)

Technical diagram of a mechanical device with labeled parts A, B, and C, including a close-up view of the component.

E D C F

4.3.4 Appliquez la plaque de protection (en option)

Technical line drawing of a mechanical assembly with mounting brackets and bolts (no text or symbols)

5 CONNEXION

Technical diagram showing mechanical assembly with labeled parts A and B, likely from an engineering or manufacturing context.

A B 032601014

graph TD
    A["Component A"] -->|Flow| B["Valve B"]
    B -->|Control| C["Component C"]
    C -->|Flow| D["Component D"]
    D -->|Control| E["Component E"]
    E -->|Flow| F["Component F"]
    F -->|Control| G["Component G"]
    G -->|Flow| H["Component H"]
    H -->|Control| I["Component I"]
    I -->|Flow| J["Component J"]
    J -->|Control| K["Component K"]
    K -->|Flow| L["Component L"]
    L -->|Control| M["Component M"]
    M -->|Flow| N["Component N"]
    N -->|Control| O["Component O"]
    O -->|Flow| P["Component P"]
    P -->|Control| Q["Component Q"]
    Q -->|Flow| R["Component R"]
    R -->|Control| S["Component S"]
    S -->|Flow| T["Component T"]
    T -->|Control| U["Component U"]
    U -->|Flow| V["Component V"]
    V -->|Control| W["Component W"]
    W -->|Flow| X["Component X"]
    X -->|Control| Y["Component Y"]
    Y -->|Flow| Z["Component Z"]

Technical diagram of a mechanical assembly with labeled components A, B, C, D and connection points

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or force, including numbered annotations 1 and 2.

Cotton 24

Technical diagram of a mechanical assembly with multiple cylindrical components and a labeled point 'E' (no text or symbols beyond label)

Technical diagram of a pipe system with airflow indicators and support structures (no text or labels)

6 MISE EN SERVICE DE L'UNITE ET DE L'INSTALLATION

Technical line drawing of a mechanical component with labeled point A (no text or symbols beyond label)

Technical line drawing of a mechanical device with threaded shaft and housing (no text or symbols)

Technical line drawing of a mechanical pump or motor assembly (no text or symbols)

Technical line drawing of a rectangular battery casing with labeled ports X and Y (no text or symbols beyond labels)

Technical diagram of a mechanical assembly with labeled parts A and B, showing internal components and mounting points.

8 DYSFONCTIONNEMENTS

Mechanical assembly diagram showing a rotating component with directional arrow (no text or symbols)

Technical diagram of a mechanical device with numbered components labeled 1, 2, and 3

6 5 4

9.1.3 Montage

Technical diagram showing three-step assembly steps of a mechanical component with directional arrows indicating motion.

8 7 6 9 3 2 4 1 5 10 11 BHTX000

1 A 2 3

© 2022 Daikin Europe NV

Line drawing of a rectangular electronic device with a cylindrical top and mounting base (no text or symbols)

60. - + 6.

3 Ventileren

M J K D R E H P I O N Q L T F G B A U C S

A. CV-pomp

B. Gasblok

P. Warmwatersensor S3

Q. Sifon

R. Warmtewisselaar

• DN15
• Drukklasse (MOP)5
• High temperature class C

CAUTION

A =	Aanvoer CV	G 3⁄4" (ext)
B =	Retour CV	G 3⁄4" (ext)
C =	Gas	G 1⁄2" (int)
D =	Tapwater koud	G 1⁄2" (ext)
E =	Tapwater warm	G 1⁄2" (ext)
F =	Condensafvoer	∅ dn25 (flexibel)
h=	517mm	EKOMB22AAV1H
	577mm	EKOMB28AAV1H
	637mm	EKOMB33AAV1H
H=	590mm	EKOMB22AAV1H
	650mm	EKOMB28AAV1H
	710mm	EKOMB33AAV1H
Z =	Rookgasafvoer/lucht toevoer	∅60/100 (concentrisch)

A =	Aanvoer CV	G 3/4" (ext)
B =	Retour CV	G 3/4" (ext)
C =	Gas	G 1/2" (int)
D =	Tapwater koud	G 1/2" (ext)
E =	Tapwater warm	G 1/2" (ext)
F =	Condensafvoer	∅ dn25 (flexibel)
H=	770mm	EKOMB22AAV1H
	830mm	EKOMB28AAV1H
	890mm	EKOMB33AAV1H
Y =	Luchttoevoer	∅80 (afdichtring)
Z1 =	Rookgasafvoer	∅80 (afdichtring)
Z2 =	Rookgasafvoer/lucht toevoer	∅60/100, of ∅80/125 (concentrisch)

a=boiler, b=DHW from boiler, c=cold water inlet, d= shower, e=thermostatic valve (field supply)

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or assembly.

4.3 Montage

Technical line drawings of mechanical components with screws and bolts (no text or symbols)

de B-pack

Technical line drawing of a mechanical device with internal components and connectors (no text or symbols)

ren

Technical diagram of a mechanical device with labeled parts A, B, and C, showing exploded view and component layout.

E D C F

Technical line drawing of a mechanical assembly with mounting brackets and bolts (no text or symbols)

5 AANSLUITEN

Technical diagram showing mechanical assembly with labeled parts A and B, likely from an engineering or manufacturing context.

A B 02061014

ng

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or force, including numbered annotations 1 and 2.

Cathode 24

Diagram showing electrical circuit components including a thermometer, fF, and L with labeled symbols and connections

rF - + ① ①

Technical diagram of a mechanical assembly with multiple cylindrical components and a labeled point 'E' (no text or symbols beyond label)

Mechanical clamp assembly diagram (no text or labels visible)

RGA = Rookgasafvoer, LTV = Luchttoevoer

Technical diagram of a pipe system with a blue-tinted duct and base, showing airflow direction (no text or symbols)

6 IN BEDRIJF STELLEN VAN HET TOESTEL EN DE INSTALLATIE

Technical line drawing of a mechanical component with labeled point A (no text or symbols beyond label)

orziening

Technical line drawing of a mechanical device with threaded shaft and housing (no text or symbols)

$$ (T \max C V = 8 0 ^ {\circ} C, T \min C V = 2 5 ^ {\circ} C, T \min b u = - 7 ^ {\circ} C, T \max b u = 2 5 ^ {\circ} C) $$

B. Voorbeeld

$$ (T \max C V = 6 0 ^ {\circ} C, T \min C V = 2 5 ^ {\circ} C, T \min b u = - 7 ^ {\circ} C, T \max b u = 2 5 ^ {\circ} C) $$

Technical line drawing of a mechanical pump or motor assembly (no text or symbols)

Technical line drawing of a rectangular battery casing with labeled ports X and Y (no text or symbols beyond labels)

BELANGRIJK

Technical diagram of a mechanical assembly with labeled parts A and B, showing internal components and mounting points.

8 STORINGEN

Mechanical assembly diagram showing a rotating component with directional arrows indicating motion (no text or symbols)

Technical diagram of a mechanical device with numbered components labeled 1, 2, and 3

6 5 4

Technical diagram showing three-step assembly steps of a mechanical component with directional arrows indicating motion.

1 2 3 4 5 6 7 8 9 10 11 B01000

1 A 2 3

10 TECHNISCHE SPECIFICATIES

Model naam	EKOMB22AAV1H	EKOMB28AAV1H	EKOMB33AAV1H
Condenserend toestel	Ja	Ja	Ja
Lage temperatuur-verwarmingsketel	Nee	Nee	Nee
Verwarmingsketel type B1	Nee	Nee	Nee
Combinatieverwarmingstoestel:	Ja	Ja	Ja

Tapwater
Nom. belasting bovenwaarde, Qn (Hs)	kW	6,2 – 24,6	7,9 – 31,1	8,0 – 36,3
Nom. belasting onderwaarde, Qn (Hi)	kW	5,6 – 22,1	7,1 – 28,0	7,2 – 32,7
Tapdrempel	l/min	2
Tapwaterhoeveelheid 60°C	l/min	6	7,5	9
Tapwaterhoeveelheid 40°C (gemengd)	l/min	10	12,5	15
Tapwatertemperatuur	°C	60
Tapwaterzijdig drukverschil	kPa	Zie § 5.2

CV
Nom. belasting bovenwaarde, Qn (Hs)	kW	6,2 – 20,8	7,9 – 26,3	8,0 – 30,3
Nom. belasting onderwaarde, Qn (Hi)	kW	5,6 – 18,7	7,1 – 23,7	7,2 – 27,3
Nom. Vermoge, Pn	kW	6,0 - 17,8	7,7 - 22,8	7,8 - 26,3
Max. CV-waterdruk, PMS	bar	3
Max. CV-watertemperatuur	°C	90

10.1 Technical Product Fiche in accordance to CELEX-32013R0811

© 2022 Daikin Europe NV

Line drawing of a rectangular electronic device with a cylindrical top and mounting base (no text or symbols)

60. - + 6.

2 Auto-verifica

M J K D R E H P I O N Q L T F G B A U C S

A. Pompa CH

B. Valvola del gas

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

si. 2 1

4.3 Montaggio

Technical line drawings of mechanical components with screws and bolts (no text or symbols)

4.3.2 Montaggio del B-pack

Technical line drawing of a mechanical device with internal components and connectors (no text or symbols)

Technical diagram of a mechanical device with labeled parts A, B, and C, including a close-up view of the component.

E D C F

Technical line drawing of a mechanical assembly with mounting brackets and bolts (no text or symbols)

5 COLLEGAMENTI

Technical diagram showing mechanical assembly with labeled parts A and B, likely from an engineering or manufacturing context.

A B 02961014

5.1.2 Riscaldamento a pavimento

Technical diagram of a mechanical assembly with labeled components D and C, showing connections between pipes and housing.

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or force, including numbered annotations 1 and 2.

Catheter H

r F - + ① ① L

Diagram showing three labeled icons: a thermometer, a digital display with 'rF', and a numeric display with a plus sign.

Technical diagram of a mechanical assembly with multiple cylindrical components and a labeled point E (no text or symbols beyond label)

Technical diagram of a pipe system with airflow indicators and support structures (no text or labels)

Technical line drawing of a mechanical component with labeled point A (no text or symbols beyond label)

6.1.2 Fornitura ACS

Technical line drawing of a mechanical device with threaded shaft and housing (no text or symbols)

Technical line drawing of a mechanical pump or motor assembly (no text or symbols)

Technical diagram of a mechanical assembly with labeled parts A and B, showing internal components and mounting points.

8 DIFETTI

Mechanical assembly diagram showing a rotating component with directional arrow (no text or symbols)

Technical diagram of a mechanical device with numbered components labeled 1, 2, and 3

6 5 4

9.1.3 Montaggio

Technical diagram showing a hand using a tool to adjust or install a mechanical component, with three steps and directional arrows indicating assembly.

8 7 6 2 4 1 3 5 10 11 9

1 A 2 3

10 SPECIFICHE TECNICHE

G25 - Gas Naturale LL/L

G31 - GPL Propano

© 2022 Daikin Europe NV

Line drawing of a rectangular electronic device with a cylindrical top and mounting ports (no text or symbols)

□ Wybieg pompy c.o.

Technical diagram of an electronic device with labeled components from motor to battery

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

4.3 Montaż

Technical line drawings of mechanical components with screws and bolts (no text or symbols)

Technical line drawing of an electrical enclosure with internal wiring and multiple connectors (no text or symbols)

Technical diagram of a mechanical device with labeled parts A, B, and C, including a close-up view of the component.

E D C F

Technical line drawing of a mechanical assembly with mounting brackets and bolts (no text or symbols)

5 PODŁĄCZANIE

Technical diagram showing mechanical assembly with labeled parts A and B, likely from an engineering or manufacturing context.

A B 032601014

graph TD
    A["Component A"] -->|Flow| B["Component B"]
    B -->|Control| C["Component C"]
    C -->|Flow| D["Component D"]
    D -->|Control| E["Component E"]
    E -->|Flow| F["Component F"]
    F -->|Control| G["Component G"]
    G -->|Flow| H["Component H"]
    H -->|Control| A
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#fff,stroke:#333
    style H fill:#fff,stroke:#333

Technical diagram of a mechanical assembly with labeled components A, B, C, D and connection points

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or force, including numbered annotations 1 and 2.

Compressor 24

Technical diagram of mechanical assembly with multiple cylindrical components and a labeled point E (no text or symbols beyond label)

Technical diagram of a pipe system with airflow indicators and structural components (no text or labels)

6

ROZRUCH URZĄDZENIA I INSTALACJI

Technical line drawing of a mechanical component with labeled point A (no text or symbols beyond label)

Technical line drawing of a mechanical device with threaded shaft and housing (no text or symbols)

Technical line drawing of a mechanical pump or motor assembly (no text or symbols)

Technical line drawing of a rectangular battery casing with labeled ports X and Y (no text or symbols beyond labels)

WAŻNE

Technical diagram of a mechanical assembly with labeled parts A and B, showing internal components and mounting points.

8 USTERKI

Mechanical assembly diagram showing a rotating component with directional arrow (no text or symbols)

Technical diagram of a mechanical device with numbered components labeled 1, 2, and 3

6 5 4

9.1.3 Montaż

Technical diagram showing a hand using a tool to adjust or install a mechanical component, with three steps and directional arrows indicating assembly.

Technical diagram of a mechanical or structural assembly with numbered components and connecting rods

1 A 2 3

(1) G20 – Gaz ziemny E/H
G25 - gaz ziemny LL/L
G31-LPG,Propan

© 2022 Daikin Europe NV

Line drawing of a rectangular electronic device with a cylindrical top and control buttons at the bottom (no text or symbols)

1 INSTRUÇÕES DE SEGURANÇA

IMPORTANTE

M J K D R E H P I O N Q L T F G B A U C S

A. Bomba de CH

B. Válvula de gás

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or assembly.

4.3 Montagem

Technical line drawings of mechanical components with screws and bolts (no text or symbols)

4.3.2 Montar o B-pack

Technical line drawing of an electrical enclosure with internal wiring and a multi-positioned component below (no text or symbols)

Technical diagram of a mechanical device with labeled parts A, B, and C, including a close-up view of the component.

E D C F

4.3.4 Aplicar a cobertura (opcional)

Technical line drawing of a mechanical assembly with mounting brackets and bolts (no text or symbols)

5 LIGAR

Technical diagram showing mechanical assembly with labeled parts A and B, likely from an engineering or manufacturing context.

A B 02061014

graph TD
    A["Component A"] -->|Flow| B["Component B"]
    B -->|Control| C["Component C"]
    B -->|Feedback| D["Component D"]
    B -->|Feedback| E["Component E"]
    C --> F["Component F"]
    F -->|Control| G["Component G"]
    F -->|Feedback| H["Component H"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#fff,stroke:#333

Technical diagram of a mechanical assembly with labeled components A, B, C, D and connection points

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or force, including numbered annotations 1 and 2.

Census H

Diagram showing three labeled icons: a thermometer, a 'rF' display, and a 'L' with tools and symbols.

rF - + ① ①

Technical line drawing of a mechanical assembly with multiple cylindrical components and a labeled point 'E' (no text or symbols beyond label)

5.5 Ligação do gás

Technical diagram of a mechanical assembly with multiple cylindrical components and a labeled point E (no text or symbols beyond label)

Technical diagram of a pipe system with airflow indicators and support structures (no text or labels)

Technical line drawing of a mechanical component with labeled point A (no text or symbols beyond label)

6.1.2 Fornecimento de AQS

Technical line drawing of a mechanical device with threaded shaft and housing (no text or symbols)

Technical line drawing of a mechanical pump or motor assembly (no text or symbols)

Technical line drawing of a rectangular battery casing with labeled ports X and Y (no text or symbols beyond labels)

IMPORTANTE

Technical diagram of a mechanical assembly with labeled parts A and B, showing internal components and mounting points.

8 AVARIAS

Mechanical assembly diagram showing a rotating component with directional arrow (no text or symbols)

Technical diagram of a mechanical device with numbered components labeled 1, 2, and 3

6 5 4

9.1.3 Instalação

Technical diagram showing a hand using a tool to adjust or install a mechanical component, with three steps and directional arrows indicating assembly.

8 7 6 2 4 1 3 5 10 11

1 A 2 3

10 ESPECIFICAÇÕES TÉCNICAS

G25 – Gás natural LL/L

G31 - LPG Propano

© 2022 Daikin Europe NV

Line drawing of a rectangular electronic device with a cylindrical top and mounting base (no text or symbols)

M J K D R E H P I O N Q L T F G B A U C S

A. Avtlaia CH

B. Báva aερίου

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or assembly.

4.3 Συναρμολόγηση

Technical line drawings of mechanical components with screws and bolts (no text or symbols)

Technical line drawing of an electrical enclosure with internal wiring and component housing (no text or symbols)

Technical diagram of a mechanical device with labeled parts A, B, and C, showing exploded view and component layout.

E D C F

Technical line drawing of a mechanical assembly with mounting brackets and bolts (no text or symbols)

5 ΣΥΝΔΕΣΗ

Technical diagram showing mechanical assembly with labeled parts A and B, likely from an engineering or manufacturing context.

A B 020621014

graph TD
    A["Component A"] -->|Flow| B["Component B"]
    B -->|Control| C["Component C"]
    B -->|Feedback| D["Component D"]
    B -->|Feedback| E["Component E"]
    C --> F["Component F"]
    F -->|Control| G["Component G"]
    F -->|Feedback| H["Component H"]
    H --> A
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#fff,stroke:#333
    style H fill:#fff,stroke:#333

Technical diagram of a mechanical assembly with labeled components A, B, C, D and connection points

Technical line drawing of a mechanical assembly with labeled component A (no text or symbols beyond label)

Diagram showing a device with labeled parts and directional arrows indicating movement or force, including numbered annotations 1 and 2.

Census H

Technical diagram of a mechanical assembly with multiple cylindrical components and a labeled point E (no text or symbols beyond label)

Technical diagram of a pipe system with airflow indicators and structural components (no text or labels)

Technical line drawing of a mechanical component with labeled point A (no text or symbols beyond label)

ΠΡΟΕΙΔΟΠΟΙΗΣΗ

Technical line drawing of a mechanical valve assembly (no text or symbols)

Technical line drawing of a mechanical pump or motor assembly (no text or symbols)

Technical diagram of a mechanical assembly with labeled parts A and B, showing internal components and mounting points.

8 ΔΥΣΛΕΙΤΟΥΡΓΙΕΣ

Mechanical assembly diagram showing a rotating component with directional arrow (no text or symbols)

Technical diagram of a mechanical device with numbered components labeled 1, 2, and 3

6 5 4

9.1.3 Εφαρμογή

Technical diagram showing three-step assembly steps of a mechanical component with directional arrows indicating motion.

8 7 9 6 3 2 4 1 5 10 11 B01X00

1 A 2 3