EKOMBG33ABV1 - Boiler DAIKIN - Free user manual and instructions

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USER MANUAL EKOMBG33ABV1 DAIKIN

Symbols The following symbols are used in this manual:

CAUTION Procedures which - if they are not carried out with the necessary care - may cause damage to the product, the surroundings, the environment or injury.

IMPORTANT Procedures and/or instructions which, if they are not followed, will have a negative effect on the functioning of the unit. Service and technical support for the installer For information about specific settings, installation, maintenance and repair work, as an installer, please contact your local Daikin dealer. Identification of the product You will find the unit details on the data plate on the bottom of the unit. The data plate contains, beside the supplier information and the boiler specification (boiler type and model name) the following information: ******-yymm****** Product code-Serial No. YY= year of production, mm = month of production PIN Product Identification Number

Data related to Domestic Hot Water

Data related to Central Heating

Information regarding electrical power supply Voltage, mains frequency, elmax, IP-class) PMS Permissible overpressure in CH circuit in bar PWS Permissible overpressure in DHW circuit in bar Qn HS Input related to gross caloric value in kilowatts Qn Hi Input related to net caloric value in kilowatts

Output in kilowatts BE, DE, GR, IT, PT, FR, PL Countries of Destination (EN 437) I2E(s), I2H, IIELL3P, II2H3P, II2Esi3P Approved unit categories (EN 437) G20-20 mbar G25-25 mbar Gas group and gas connection pressure as set at the factory (EN 437) B23, …. C93(x) Approved flue gas category (EN 15502) Tmax Max. flow temperature in °C IPX4D Electrical protection classDaikin Europe NV 5 1 SAFETY INSTRUCTIONS The manufacturer Daikin accepts no liability for damage or injury caused by the failure to (strictly) observe the safety instructions, or negligence during the installation of the Daikin EKOMBG*ABV1 wall-mounted gas boiler and any associated accessories. Depending on the year of construction, an Daikin EKOMBG*ABV1 may contain a part which contains ceramic fibres. This can apply to the gasket of the inspection glass and the isolation package of the front plate. Always use the recommended personal protective equipment when working with ceramic fibres. IMPORTANT This product is intended for domestic use only. This device is not intended for use by people (including children) with reduced physical, sensory or mental abilities, or lack of experience and knowledge, unless they are given supervision or instructions on the use of the device by a person who is responsible for their safety. The instructions are stated separately for the various disciplines. The entire installation must meet the applicable local technical and (safety) instructions, for the gas installation, the electrical installation, smoke extraction installation, drinking water installation, and central heating installation. 2 UNIT DESCRIPTION

The Daikin EKOMBG*ABV1 wall-mounted gas boiler is a closed unit. The unit is intended to provide heat to the water of a CH-installation and the domestic hot water installation. The air supply and the combustion gas outlet of the EKOMBG*ABV1 can be connected to the unit by two separate pipes, or by a concentric connection. The unit was tested in combination with the combi feedthrough, but the unit may also be connected to combi feedthroughs which meet the universal test standards for combi feedthroughs. The unit can be connected to an assembly bracket if required, a frame with top connection, and various installation sets. These are provided separately. The Daikin EKOMBG*ABV1 wall-mounted gas boilers have the CE quality mark, electrical protection class IPX4D. It is possible to use the unit solely for warm water, or solely for heating. The system which is not in use, does not need to be connected (see par. 7.2). The unit is delivered for natural gas (G25) as a standard. On request, the unit can also be provided for propane (G31).

The Daikin EKOMBG*ABV1 wall-mounted gas boiler is a modulating high-efficiency boiler. This means that the power is modulated to suit the required heat demand. In the aluminum heat exchanger two separate copper circuits are integrated. The separate circuits for CH and warm water allow the heating and warm water supply to function independently. The hot water supply takes precedence over the heating. Both cannot work at the same time. The unit is fitted with an electronic boiler controller machine, which operates the fan and the modulating pump at every heat requirement of the heating or the warm water supply, opens the gas valve, ignites the boiler controller, and continuously monitors and regulates the flame, depending on the requested power. The pump is only operated during a heat request from the heating, depending on the requested power.

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.Daikin Europe NV 6 If the frost protection intervenes, the code 7 will be displayed (heating up exchanger). The pressure in the CH installation can also be read from the temperature display in this operating mode (in bar).

Standby The LED at the key is lit and possibly one of the LEDs of the tap comfort function. The unit is ready to respond to a request for CH or tap water. 0 Post-running CH After the end of the CH-operation, the pump will post-run. The post-pumping time is set to the value in par. 7.2 in its factory settings. This setting can be changed. In addition to this, the pump will run automatically 1 time per 24 hours, for 10 seconds, in order to prevent it from getting stuck. This automatic switching on of the pump takes place at the time of the last heating request. In order to change this, the room thermostat needs to be set higher for a moment, at the required time of day. 1 Requested temperature reached The boiler controller may temporarily block the heat request. The boiler controller will then be stopped. The block occurs because the required temperature has been reached. When the temperature has sufficiently decreased, the block will be lifted. 2 Selftest Once every 24 hours, the boiler controller tests the connected sensors. During the test, the controller will not carry out any other tasks. 3 Ventilating When the unit is started, the fan is first brought up to its correct start rpm. When the start rpm is reached, the boiler controller will be ignited. Code 3 is also visible when there is post-fanning after the boiler controller is stopped. 4 Igniting When the fan has reached the start rpm, the boiler controller will be ignited by means of electrical sparks. During the ignition, code 4 is displayed. If the boiler controller does not ignite, a new attempt will be made after approximately 15 seconds. If after 4 ignition attempts, the boiler controller has still not been ignited, the controller will go into down- time. 5 CH-operation An on/off thermostat, an OpenTherm thermostat, an outdoor sensor or a combination thereof can be connected to the controller (see par. 9.2) When there is a heat request from a thermostat, after the fan has started running (code 3 ), the ignition will take place (code 4 ) followed by the CH operating mode (code 5 ). During CH operation, the rpm of the fan and therefore the power of the unit can be adjusted so the temperature of the CH water to the required CH supply temperature can be controlled. If an on/off thermostat has been connected, this will be the CH supply temperature set on the display. In case of an OpenTherm or wireless thermostat, the required CH supply temperature is determined by the thermostat. In case of an outdoor sensor, the required CH supply temperature is determined by the fuel line programmed in the boiler controller. For the last two situations, the temperature set on the display is the maximum. During CH operation, the requested CH supply temperature will be displayed on the operating panel. The CH supply temperature can be set between 30 and 90°C (see par. 7.1). Caution: for a low temperature system, a lower maximum setting may be required than the standard setting of 80°C. You can press the service button during CH operation to read the actual CH supply temperature. If the tap comfort function is switched on (see code 7 ), an OpenTherm heat request of less than 40 degrees will be generated. 6 Domestic hot water operation The hot water supply takes precedence over the heating. If the flow switch senses a request for more than 2 l/min of domestic hot water, any CH requests will be interrupted. After the fan has switched on (code 3 ) and there has been an ignition (code 4 ), the controller will switch to domestic water operation (code 6 ). DuringDaikin Europe NV 7 domestic hot water operation, the rpm of the fan, and therefore the power of the unit, is controlled by the controller on the basis of the set tap water temperature. The control system ensures the tap water temperature is correct. The water temperature can be set between 40°C and 65°C (see par. 7.1). The set tap water temperature is displayed on the operation panel. The standard setting is 60°C. You can press the service button during tap water operation to read the actual tap water temperature. 7 Heating up unit In order to provide a fast supply of domestic hot water, a so-called tap comfort function has been installed in the unit. This function keeps the heat exchanger at the right temperature (it can be set, see par. 7.2). The tap comfort function has the following settings:

• On: ( LED on) The tap comfort function of the unit is continuously switched on. The unit always immediately provides warm water.

• Eco: ( LED on) The tap comfort function of the unit is self-learning. The unit will adjust to the usage pattern of the domestic hot water. This means the heat exchanger will not be kept warm during the night or during longer absences.

• Off: (Both LEDs off) The heat exchanger is not kept warm which means the supply of domestic hot water takes a bit of time. If there is no need for fast delivery of domestic hot water, the tap comfort function can be switched off. In the settings "on" and "eco" , the unit meets the requirements of the Gaskeur [Gas Inspection] CW standards.

The boiler controller is provided with an interface for a PC. A PC can communicate with the CH boiler by means of a special dongle, and the associated software. This facility enables you to follow the behavior of the boiler controller, the unit and the heat installation over a long period.

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.

• The unit is fitted with frost protection in order to prevent it from freezing. If the temperature of the heat exchanger drops too low, the pump will start running until the temperature of the heat exchanger is sufficiently high. If the frost protection intervenes, code 7 will be displayed (heating up exchanger).

• If the installation (or a part thereof) can freeze, the coldest place should be fitted with an (external) frost thermostat on the return pipe. This must be connected in accordance with the electrical diagram (see par. 9.2).

Note When the unit is switched off ( - on the service display), the unit frost protection will remain active, however a heat request from an (external) frost thermostat will be ignored.Daikin Europe NV 9 3 MAIN COMPONENTS

Flue gas/air inlet concentric adapter

Burner controller (incl. operating panel)

Domestic hot water sensor S3

Pressure sensor central heating

Operating panel and display

Connection wire 230 V ~ with earthed plug

Position of data plate

Description Article numbers

Outdoor sensor EKOSK1AA

3-way valve set EK3WV1AA

Flue gas adapter Parallel 80 mm

(1) This set contains a gas valve that complies to EN 331 with the following specifications:

• Pressure class (MOP)5

• High temperature class C

• 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 followedDaikin Europe NV 11 4 INSTALLATION

4.1 Installation measurements

Unit with pipes connected downwards:

Unit + wall mounting strip A = Supply CH G ¾” (ext) B = Return CH G ¾” (ext) C = Gas G ½” (int) D = Tap water cold R ½” E = Tap water warm R ½” F = Condense outlet Ø dn25 (flexible)

Unit connected to B-pack:

Unit + B-pack A = Supply CH G ¾” (ext) B = Return CH G ¾” (ext) C = Gas G ½” (int) D = Tap water cold R ½” E = Tap water warm R ½” F = Condense outlet Ø dn25 (flexible)

The unit must be installed against a wall with sufficient load bearing capacity. In case of light wall constructions, there is a risk of resonance noises. Within 1 meter of the unit, there must be a earthed wall plug. In order to prevent the condense outlet from freezing, the unit must be installed in a frost-free room. Preferably ensure there is a space of at least 2 cm next to the boiler. No free space is required due to danger of singeing.

IMPORTANT The unit must not be installed in a space where work is carried out with aggressive or corrosive gases such as hairspray.

4.2.1 Installing in kitchen cabinet

The unit can be placed between two kitchen cabinets, or inside a kitchen cabinet. Make sure there is sufficient ventilation at the bottom and the top. If the unit is installed inside a cabinet, ventilation openings of at least 50 cm

4.2.2 Removing cover plate and front panel

For various activities on the unit, the cover plate and front panel have to be removed from the unit, if they were installed. Do this as follows:

• If you are using the cover plate (A), remove it to the front.

• Unscrew both screws (1) behind the display window.

• Pull the bottom of the front panel (2) forwards.

Danger: risk of burning

In case of high leaving water set ponts for space heating (eighter a high fixed set point or a high weather-dependent set point at low ambient temperatures), the heat exchanger of the boiler can be very hot, for example 70°C. Beware that in case of a tapping demand, the water can initially have a higher water temperature than requested. In this case, it is recommended to install a thermostatic valve to prevent scalding. This can be done according to the schematics below.

a=boiler, b=DHW from boiler, c= cold water inlet, d=shower, e=thermostatic valve (field supply)Daikin Europe NV 14

The boiler can be hung to the wall using :

• the wall suspension strip and a the connection kit EKVK4AA

• a B-pack including an expension vessel and a connection kit.

4.3.1 Assembling suspension strip and assembly bracket

• Make sure the construction of the wall is suitable for hanging the boiler.

• Drill the holes for the suspension strip and the connection kit in the wall using the template delivered with the boiler.

• Mount the suspension strip and the assembly bracket horizontally on the wall, using the associated attachment materials.

• Place the filling loop on the connections of the return and cold water nipple following the connection kit installation instruction

• The boiler can now be placed on the suspension strip simultaniously sliding the pipes of the boiler into the valves in the assembly bracket.

• Make sure the construction of the wall is suitable for hanging the boiler and B-pack.

• Drill the holes for the B-pack kit in the wall using the template delivered with the boiler.

• Mount the B-pack on the wall using the associated attachment materials.

• Place the assembly bracket in the frame as described in the manual inclued in the B-pack.

• Connect the flexible hose on the expension vessel and the conenction on the return valve. Make sure the seal rings are placed !

• Place the filling loop on the connections of the return and cold water nipple following the connection kit installation instruction

• The boiler can now be placed on B-pack simultaniously sliding the pipes of the boiler into the valves in the assembly bracketDaikin Europe NV 15

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

• Operating instructions

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

4. Install the suspension strip.

5. Check whether the compression rings are positioned straight in the couplings of

the assembly bracket.

6. Position the unit: slide it from top to bottom over the suspension strip (B). Make

sure the pipes slide into the compression fittings simultaneously.

7. Tighten the compression fittings onto the assembly bracket.

The nipples and pipes must not rotate with it!

8. Open the display valve and loosen the two screws on the left and right of the

display, and remove the front panel.

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

10. Fill the siphon with water, and slide it as far as possible on top of the condense

output connector (E) under the unit.

11. Seal flexible tube (D) of the siphon, if possible together with the overflow pipe of

the inlet combination and the overflow valve, to the sewage via open connection (F).

12. Assemble the air supply and the burning gas outlet (see par. 5.6).

13. Assemble the cover and tighten the two screws to the left and the right of the

4.3.4 Apply cover plate (optional)

Suspend the converted top edge of the cover plate from the washers underneath the bottom of the unit, and slide the cover plate as far back as possible.

Danger: risk of burning

In case of high leaving water set ponts for space heating (eighter a high fixed set point or a high weather-dependent set point at low ambient temperatures), the heat exchanger of the boiler can be very hot, for example 70°C. Beware that in case of a tapping demand, the water can initially have a higher water temperature than requested. In this case, it is recommended to install a thermostatic valve to prevent scalding. This can be done according to the schematics below.

a=boiler, b=DHW from boiler, c= cold water inlet, d=shower, e=thermostatic valve (field supply)Daikin Europe NV 16 5 CONNECTING

5.1 Connecting CH installation

1. Rinse the CH installation carefully.

2. Fit the supply pipe (A) and return pipe (B) to the connection set.

3. All pipes must be assembled with no electrical current, in order to prevent shocks

4. Existing connections may not be rotated, in order to prevent leakages.

The CH installation must be fitted with:

• A filling/draining tap (A) in the return pipe, immediately underneath the unit.
• A draining tap at the lowest point of the installation.
• An overflow valve (B) of 3 bar in the input pipe at a distance of no more than 500 mm from the unit. Between the unit and the overflow valve there may be no valve or constriction.

• An expansion vessel in the return pipe (in the B-pack or in the installation).

• A check valve, if there are pipes running up, within close distance of the unit. This prevents a thermosiphon effect from occurring during tap water operation (a non spring-operated return valve, must be assembled vertically).

5.1.1 Thermostatic radiator taps

If all radiators are fitted with thermostatic or cable radiator taps, a minimum water circulation must be safeguarded. See par. 7.3.

5.1.2 Underfloor heating

Underfloor heating with pump If an underfloor heating system is not hydraulically neutral, the underfloor heating pump may generate unwanted circulation over the CH boiler. For a good functioning of the domestic hot water provision, unwanted circulation over the CH boiler must be prevented. Connect an underfloor heating system indirectly hydraulically neutrally or provide the CH installation with a two-way valve set 230 V ~ (E). If the underfloor heating pump absorbs heat via the return of the boiler, unwanted circulation can be prevented by means of a check valve (D). Make sure there is a minimal water circulation. See par. 7.3. Connection diagram underfloor heating A. CH boiler B. CH pump C. Thermostatic control valve D. Spring-operated check valve E. Electrical valve 230 V ~ F. Radiators G. Space/clock thermostat H. Maximum thermostatDaikin Europe NV 17 Underfloor heating without pump Connect the underfloor heating system (D) and set the maximum CH supply temperature of the CH boiler to the design condition. Fit a clamp thermostat (A) onto the supply tube underneath the CH boiler. The clamp thermostat with blind cap must be set to a maximum supply temperature of 55°C. Fit the on/off room thermostat (B) and connect in a series with the clamp thermostat. The boiler must be connected to X4 - 6/7. In this situation, the pump in the boiler is used to bridge the loss of pressure of the underfloor heating system. Using the loss of pressure graph par. 7.4, the maximum loss of pressure of the underfloor heating system can be determined. Make sure there is a minimal water circulation. See par. 7.3. In case of an underfloor heating system without pump, we recommend changing the following parameter settings: par. o from 0 to 3. par. P from 5 to 2. Parameter 3 must also be set to its minimum level, or the Transmission loss of the property, see par. 7.3.

5.1.3 Dividing CH installation in groups in case of additional heat

sources Operating principle If the room thermostat switches off the boiler because another heat source, the other rooms may cool down. This can be resolved by splitting the CH installation into two groups. The group with the external heat source (Z2) can be shut off from the main circuit by means of an electrical shut-off valve. Both groups are fitted with their own room thermostat. Please note: This "external heat source" regulation may only be applied if no extra external boiler has to be heated up (installation type 1). Installation instructions

1. Install the valve in accordance with the connection diagram.

2. Connect the room thermostat of group 1 to op X4 – 6/7.

3. Connect the room thermostat of group 2 to op X4 – 11/12.

4. Change parameter A (see Parameter settings via the service code par. 7.2).

Please note: The room thermostat in group 1 MUST be an on/off thermostat. The room thermostat in group 2 may be an OpenTherm thermostat or an on/off thermostat. Connection diagram "external heat source" regulation A. CH boiler B. Electrical shut-off valve 230 V ~ C. Radiators T1. Room thermostat group 1 T2. Room thermostat group 2 Z1. Group 1 Z2. Group 2Daikin Europe NV 18

5.2 Connecting DHW installation

1. Rinse the installation carefully.

2. If required, assemble an inlet combination.

3. Assemble the cold (D) and warm water pipe (D) to the connection set.

• If the unit is only used for warm water supply, the heating function can be switched off using the service code on the operating panel. The CH installation does not need to be connected or filled.

• If the unit is switched off during winter, and is disconnected from the electricity supply, the sanitary water must be drained in order to prevent freezing. To do so, disconnect the tap water connections straight underneath the unit. In case of old installations or domestic hot water circuits which can contain small particles, install a filter in the domestic hot water circuit. This pollution could cause a fault during domestic hot water operation.

Resistance graph tap circuit unit

5.3 Connecting electronically

CAUTION A socket with safety ground must be no further than 1 meter from the unit. The socket must be easily accessible. When installing the unit in a damp space, a fixed connection is obligatory, by means of an all-pole main switch with a minimum contact gap of 3 mm. If the mains cable is damaged or requires replacement for any other reason, the replacement mains cable must be ordered from the manufacturer or its representative. In case of any doubt, contact the manufacturer or its representative.

1. Remove the plug from the socket, when working on the electrical circuit.

2. If there is a cover plate (A), remove it to the front.

3. Unscrew both screws (1) behind the display window.

4. Slide the bottom of the front panel (2) forwards, and remove it.

5. Pull the boiler controller forward. The boiler controller unit will tip downwards in the

6. Consult par. 9.2 to make the connections.

7. After the required connections have been made, slide the boiler controller back into

the unit and return the cover plate, if you are using one.

8. After making the required connections, connect the unit to the socket with safety

Temperature regulation Connector X4 Comments Room thermostat on/off

Modulating thermostat with comfort function in use

Outdoor temperature sensor

Parallel over room thermostatDaikin Europe NV 20

5.4 Connect room thermostat

measure the electrical current and set it accordingly. The maximum resistance of the thermostat pipe and the room thermostat amounts to a total of 15 Ohm.

5.4.2 Modulating room thermostat, Open Therm

The unit is suitable for connecting a modulating room thermostat, in accordance with the OpenTherm communication protocol. The most important function of the modulating room thermostat is to calculate the input temperature at a required room temperature, in order to make optimal use of the modulating. At every heating request, the required input temperature is shown on the display of the unit. Connect the modulating thermostat (see par. 10.1). If you want to use the tap water on/off switch function of the OpenTherm thermostat, the tap water comfort function must be set to eco or on. For more information, consult the manual of the room thermostat.

5.4.3 Modulating room thermostat, wireless

The EKOMBG*ABV1 CH boiler is suitable to communicate wireless without sending/receiving module with the Honeywell room thermostats T87RF1003 Round RF, DTS92 and CMS927. The CH boiler and the room thermostat must be appointed to each other:

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

• One of the following codes will be shown on the display of the unit:

1. rF and L / - : the display above the button shows an L alternated by a –

red led : flashing The CH boiler has not been appointed. A unit in this operating status, can be linked by using the method of the appropriate room thermostat. The method of appointment depends on the type of room thermostat and is described in the installation and operating instructions of the wireless room thermostat.

2. rF and L / 1 : the display above button shows an 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.

3. Set the room thermostat to the test mode (see the installation and operating

instructions of the room thermostat).

4. The red led above the reset button will flash if the appointment has

been carried out correctly.

5. Press the reset button of the unit to leave the RF room thermostat menu

of the boiler controller. You will automatically exit the test mode 1 minute after the last test message of the RF room thermostat has been received. Undo the appointment of an RF room thermostat to the CH boiler.

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

• Press the service button 2x. On the display above the button, a C will be shown.Daikin Europe NV 21

• Press the reset button of the unit again to remove the existing appointments. The display of the unit will show rF again, with a flashing L / - . If required, an RF room thermostat can be appointed to the unit again.

• Press the reset button of the unit to leave the RF room thermostat menu or wait for 1 minute.

5.4.4 Outdoor temperature sensor

The unit is provided with a connection for an outdoor temperature sensor. The outdoor temperature sensor should be used in combination with an on/off room thermostat. In principle, any on/off room thermostat can be combined with an outdoor sensor. Upon request of the room thermostat, the boiler will provide heat until the maximum set temperature in the boiler has been reached. This maximum set temperature is automatically regulated via the outdoor sensor, in accordance with the set fuel line in the boiler. Connect the room outdoor sensor (see par. 10.1). For the fuel line setting, see the weather dependent regulation (see par. 7.5).

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

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.Daikin Europe NV 22

5.6 Flue and air supply duct

For the installation of the flue and air supply duct material, see the manual included with the materials. Contact the manufacturer of the relevant flue and air supply duct materials for extensive technical information and specific assembly instructions.

Make sure that the socket connections of the flue and air supply duct materials are correctly sealed. Improper fastening of the flue and the air supply duct can lead to hazardous situations or result in personal injury. Check all flue components for tightness. Don not use screws or parkers to mount the flue system as leakage can occur. Do not use any sort of grease when mounting the pipe system. Use water instead. The sealing rubbers can be negatively affected when grease is applied. Do not mix any components, materials or ways of coupling from different manufacturers.

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.

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

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.Daikin Europe NV 23

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.Daikin Europe NV 24

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

• 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 IP44

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).

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

Permitted pipe lengths B23 and B33 when applying Ø80 mm

5.10 Connection to a sealed flue system.

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.

5.10.2 Permitted pipe lengths in concentric flue tube systems

Permitted pipe lengths when applying concentric 60/100

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

4. Fit the assembly brackets in accordance with the assembly instructions of the supplier

of the air supply/flue tube system.Daikin Europe NV 28

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

Permitted pipe lengths when applying Ø80 mm (total of flue pipe and air intake pipe together).

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.Daikin Europe NV 29

5.10.4 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

Flue materials of different markings must not be combined !Daikin Europe NV 30

• 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 lenght of the pipes before and after 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.

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.Daikin Europe NV 31Daikin Europe NV 32

5.10.6 Air supply from the facade and a roof outlet with communal

• An air supply from the outside wall and a roof outlet with a combined flue system is allowed.

• The air supply in the facade must be fitted with an inlet grid (A).

• The combined flue system must be fitted with a traction extractor hood (B).

• If the combined flue system is situated in the outdoors, the output pipe must be double-walled or insulated.

The minimum diameters of the communal output system based on vacuum

Communal combustible 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.Daikin Europe NV 33

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

The minimum diameters of the combined air supply and flue system based on the continuation sheet 2001-02 inspection requirements no, 138 of Gastec.

• A Combination Air/flue gas system is permitted.

• For the combined 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

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

Note: The outlet system is certified in combination with the unit.Daikin Europe NV 35

6.1 Filling and air purge of unit and installation

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.

2. 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).

3. Aerate the system with the manual aerator (A).

Upon request, an automatic aerator can be fitted onto the unit instead of the manual aerator.

4. Aerate the installation with the manual aerators on the radiators.

5. Top up the CH installation if the pressure has dipped too low due to the

6. Check all couplings for leaks.

7. 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.

1. Open the main tap to bring the DHW 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.

1. Aerate the gas pipe with the initial pressure measuring nipple (D) on the gas

2. Check all couplings for leaks.

3. Check the initial pressure and offset pressure (see par. 7.7).Daikin Europe NV 36

6.2 Commissioning the unit

CH operation or setting maximum CH temperature

Tap/CH button to set the required temperature

Tap operation or setting tap temperature

Required temperature CH or tap water in °C / pressure CH water in bar / malfunction code

Tap comfort function on

Service button / actual temperature during heat request

Flashing in case of a malfunction

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). 2. 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). 3. Set the room thermostat higher than the room temperature. The unit will now go into CH operation: 5 on the service display.

4. Fire up the installation.

6. Check whether the set minimum and maximum value of the pump characteristic have been set correctly (see par. 7.2 and parameter 3. and c. and par. 7.4)

7. Switch the unit off.

8. Purge the air from the unit and the installation after cooling down (top up if necessary).

9. Switch the unit on.

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

11. Instruct the user on the filling, air purging and functioning of the heating and the hot water provision.

• The unit is fitted with an electronic boiler controller which ignites the boiler controller and controls she modulating pump, 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. 7.2).

• 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 lastheating 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.Daikin Europe NV 37

6.3 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. Close the main tap of the hot and cold water supply to the unit.

5. Drain the unit by loosening the domestic hot water couplings under the unit.

• 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 boiler will switch on until the heat exchanger has heated up. If there is the possibility that the installation (or a part thereof) may freeze, an (external) frost thermostat must be fitted at the coldest place, on the return pipe. This must be connected in accordance with the electrical diagram (see par. 9.2). 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).Daikin Europe NV 38

7 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 service code.

7.1 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 button. In Summer mode the central heating has been shut off while DHW remains active. Summer mode can be activated by pressing the 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 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: ( 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. 8.2 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 leaving water 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).Daikin Europe NV 39

7.2 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 0 appears on the service display and a 0 on the temperature display.

2. Use the button to enter 15 (service code) 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: Change maximum CH power

1. Press the and the button simultaneously.

2. Use the button to go to 15 .

3. Press the button 3 x. 60 and 3 will appear on the display.

4. Use the button to change the 60 to 70.

5. Press the button until P appears.

6. The change has now been implemented. The maximum CH power has been increased from 60 to 70 %.

Access to installers settings, the service code must be entered (=15)

0= Combi 1= Space heating + hot water by means of storage tank 2= Tap (hot water only) 3= Solo

0= pump post-running time active 1= pump continuously active 2 – 5 = Not active

Maximum capacity modulating CH pump

Min. leaving water temperature of the fuel line

Max setting value leaving water temperature via operating panel

Setting reach 30°C to 90°C

Min. outdoor temperature of the fuel line

Setting reach -30 to 10°C

Max. outdoor temperature of the fuel line

Setting reach 15°C to 30°C

CH pump post-running time after CH operation

Setting reach 0 to 15 minutes

CH pump post-running time after boiler operation

Setting reach 0 to 15 minutes (n/a to Combi unit)

Setting three-way valve or electrical valve

0= powered during CH operation 1= powered during hot water operation and rest 2= powered during every heat request (CH, hot water and continuous heating function) 3= group regulation 4 and higher = Not applicableDaikin Europe NV 40

0= step-by-step modulation off during CH operation 1= step-by-step modulation on during CH operation 2= Power control by Open Therm room thermostat enabled

Setting reach 20 to 50%

Minimum capacity modulating CH pump

Minimum rpm hot water

Setting reach 20 to 50%

Min. leaving water temperature at OT (OpenTherm) or RF thermostat

Setting reach 10°C to 60°C E . Reaction OT and RF room thermostat

0= do not respond to hot water request if requested temperature is lower than the set value par. E 1= respond to hot water request with minimum leaving water temperature limited to set value par. E 2= respond to hot water request with maximum leaving water temperature (on/off function)

Settings reach 40 to 99% of the set maximum rpm F . Minimum start rpm hot water

Settings reach 40 to 99% of the set maximum rpm

Setting reach 40 to 50 (40=4000 rpm, 50=5000 rpm). Please note: Factory setting, rpm may deviate

Not applicable (only for boilers with external DHW tank)

Regulated temperature during boiler operation (Ta)

Setting reach 60°C to 90°C

Hot water temperature at Comfort/Eco

Setting reach 0 or 40°C to 60°C 0 = reheating temperature is equal to hot water temperature

Wait time CH request response

Settings reach 0 – 15 minutes

Waiting time CH operation after hot water operation

Settings reach 0 to 15 minutes

Setting reach 0,1 to 10 0 = Comfort function controllable by Open Therm room thermostat 1 – 10 number of eco days

Anti-recycling time during CH operation

Minimum switch off time on boiler water temperature Can be set to 0 to 15 minutes

0 = Summer mode deactivated 1 = Summer mode to be activated by button (code in display : Su) 2 = Summer mode to be activated by button (code in display : So) 3 = Summer mode to be activated by button (code in display : Et)

Heating curve coefficient

The maximum CH power is set to 60% 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 EKOMBG*ABV1 (in % maximum rpm)

Caution: The power is slowly increased when the fire is lit and is lowered when the set leaving water temperature is reached (modulation on Tsupply). The minimum feedthrough amount (l/h) Set power (kW)

7.4 Set pump capacity

The EKOMBG*ABV1 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

7.5 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 (Tmax) is set via the temperature display. If so desired, the fuel line can be changed by using the service code (see par.7.2). The weather dependent regulation only functions with an on-off thermometer. When applying an Open Therm room thermostat, the outside temperature is passed on, but the fuel line of the CH boiler is not active. Fuel line graph

7.6 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. 7.7).

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.

7.7 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

percentage in the combustion gases or by measuring the offset. 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 tables.

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.

% at Low setting (L) ( and ) With open cover See par.: 7.8 See par.: 7.8

% at Low setting (H) ( and 2x) With open cover See par.: 7.8 See par.: 7.8 Initial gas pressure (mbar) 20 mbar 30/37/50 mbar Gas dosing ring (only valid in combination with fan with integrated tunnel venturi (see drawing ) Natural gas H Propane P EKOMBG22ABV1

7.8 Setting gas/air regulation

setting has been set at the factory and does not require any adjustments, in principle. The setting can be checked by measuring the CO

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

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 button. - appears on the service display. 3 Remove the front panel from the gas boiler. 4 Remove the sample point (a) 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 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

percentage to the values in the following table.

percentage at maximum power. This is important in relation to the following steps.

IMPORTANT It is NOT possible to adjust the CO

percentage when the test program is being carried out. If the CO

percentage deviates from the values in the above table, contact your local service department. 9 Select the Low 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 CO

percentage to the values in the following table.

value at maximum power registered at setting High.Daikin Europe NV 44 11 If the CO

percentage at maximum and minimum power is within the reach stated in the above tables, the CO

setting of the boiler is correct. If NOT, adjust the CO

setting in accordance with the instruction in the following chapter. 12 Switch off the unit by pressing the 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

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

percentage, and to the left to decrease it. See the following table for the desired value. Measured value at maximum power Set values CO

(%) at minimum power (front lid open) Natural gas 2H (G20, 20 mbar) Propane 3P (G31,30/50/37 mbar)

3 After measuring the CO

percentage and adjusting the setting, replace the cover cap and 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

percentage still deviates from the values in the table which indicates the CO

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.Daikin Europe NV 45 8 MALFUNCTIONS

8.1 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.

8.2 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 the ntc on the hot water tube. • Check wiring for break. • Replace S1. 20, 21, 22, 23, 24 Sensor fault S2

Sensor fault after self-check

Temperature too high

• Air in installation. Purge the air from the boiler and CH installation.

• Pump is not running. Reset or replace the pump, see par. 8.2.10

• 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, check this using the checking mold.

• Gas block or ignition unit is not receiving electrical current.

• 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.

Fan rpm is not correct

• Fan is coming up against cover insulation. • Wiring between fan and cover.
• Check wiring or plug for lack of wire contact, measure 25-27V dc.
• Check and/or replace fan. • Replace boiler controller.

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

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.Daikin Europe NV 46

Solution: Gas supply pressure too high. Yes The home pressure controller may be faulty. Contact the energy company.

Incorrect ignition distance. Yes Check the ignition pin distance with the checking mold. Replace the ignition pin.

Gas/air regulation not correctly configured. Yes Check the setting, see Gas air regulation par.7.7 and par. 7.8.

Weak spark. Yes Check the ignition pin distance with the checking mold. Check and/or replace ignition cable. Replace the ignition unit on the gas block. Replace the ignition pin.

Solution: Gas supply pressure too low. Lower than 20 mbar. Yes The home pressure controller may be faulty. Contact the energy company.

Recirculation combustion gases. Yes Check the combustion gas outlet and the air supply system.

Gas/air regulation not configured correctly. Yes Check the setting, see Gas air regulation par.7.7 and par. 7.8.

Boiler controller gasket faulty. Yes Replace the boiler controller gasket.

Boiler controller faulty. Yes Replace the boiler controller.

Solution: The service display shows nothing. Yes Check whether the plug is in the socket.

The service display shows nothing. Yes Check the fuse, see Electrical diagram par. 10.1

). The boiler is off. Yes Switch on the boiler with the button.

Room thermostat/weather dependent regulation not connected or faulty. Yes Check the wiring. Check OpenTherm, On/off connection of the unit, or the connection between CH boiler and RF room thermostat .Replace the thermostat. Replace the weather-dependent regulation.

Pump is not running. Display shows 80 and 1. Yes Check the electricity supply. Check connector X2 and X4.

Checking mold ignition pin position Pin must touch test tool Pin must not touch test toolDaikin Europe NV 47

No electrical supply (24 V). Yes Replace the faulty controller. Check the wiring in accordance with the diagram. Check the connector X4. Replace the faulty controller.

8.3.4 The power is reduced

Solution: At high rpm, the power has decreased. Yes Clean the unit and siphon. Check the flue tube and the air supply system.

8.3.5 CH is not reaching correct temperature

Solution: Water pressure in installation is too low. Yes Top up the installation. See par. 6.1.1.

Room thermostat is not set correctly. Yes Check the setting and adjust if required.

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 flow through the installation. Yes Check the ΔT (± 20° C) between the supply and return CH. Ensure there is good flow through the installation.

The boiler power is not set correctly. Yes Adjust the boiler power. See Setting maximum CH power.

No heat transfer due to contamination in the CH boiler/installation. Yes Rinse the CH boiler/installation on the side of the CH.

8.3.6 No domestic hot water

Solution: The service display shows nothing. Yes Check whether the plug is in the socket.

The service display shows nothing. Yes Check the fuse, see Electrical diagram par. 10.1

Flow sensor does not work. Yes Replace the flow sensor.

Tap flow < 1.5 l/min. Yes Increase the tap flow.

No electricity supply on flow sensor (5V DC). Yes Check the wiring in accordance with the diagram.

S3 faulty. Yes Replace S3.

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.

8.3.7 DHW is not reaching the correct temperature

Solution: Tap flow too high. Yes Reduce the tap flow. Check the dosing disk (EKOMBG22ABV1 and EKOMBG28ABV1)

DHW temperature set too low. Yes Increase the DHW temperature, see par. 7.1.

CH installation becomes hot during tapping. Yes Unwanted circulation in the ch circuit during hot water request 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.

Insufficient heat transfer due to lime scale or contamination in the CH boiler on DHW side. Yes Remove lime scale or rinse the CH boiler on the DHW side.Daikin Europe NV 48

8.3.8 CH installation stays warm unwanted

Solution: Room thermostat/weather dependent regulation faulty or short circuited. Yes Check the wiring. Check OpenTherm, On/off connection of the unit, or the connection between CH boiler and RF room thermostat. Replace the thermostat. Replace the weather-dependent regulation.

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.

8.3.9 A-label pump LED flashes intermittently red/green

Pump temperature is too high. Yes Check the water and ambient temperature.

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.Daikin Europe NV 49 9 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.

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 gas 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 bottom 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 (hex key) 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.

1. Clean 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 ïntegrated insulation plate and boiler controller gasket contain ceramic fibers.Daikin Europe NV 50

During maintenance the front plate seal 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.

1. 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).

2. 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 lid on the heat exchanger and secure it with the special shoulder bolts (hex key). 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.

3. Evenly manually tighten the boiler controller bolts crosswise.

4. Fit the gas coupling under the gas block.

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

6. Fit the condense outlet tray by sliding it into the outlet stump of the switcher (1), with the

siphon connection, before the bottom 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 cam at the back of the bottom container (A).

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

8. 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 head to the right.

9. Open the gas valve and check the gas couplings under the gas block and on the assembly

bracket for leakage.

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

11. Insert the plug into the socket.

12. Switch the unit on with the button.

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

14. Check the gas-air regulation (see par. 7.7 and par. 7.8) and check the gas coupling on the

gas block for gas tightness.

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

close the display cover.

16. Check the heating and the hot water provision for correct functioning.Daikin Europe NV 51

Yes Yes Yes Low temperature boiler

Domestic water threshold l/min

Domestic water quantity 40°C (mixed) l/min

Domestic water temperature

Max. CH water temperature

Other data Gas consumption G25 (1)

Gas consumption G20 (1)

Gas consumption G31 (1) m3/h

Pressure loss of the unit (CH) mH2O

P1, at 30% of Rated input (30/37)

IPX4D, (B23, B33 = IP20) Absorbed power: full load

Absorbed power: standby

Auxiliary electricity consumption at full load (elmax)

0,015 0,015 0,015 Auxiliary electricity consumption in stand by mode (Psb)

Installation measurements and weight Height

9.1 Technical Product Fiche in accordance to CELEX-32013R0811

Annual energy consumption

Seasonal space heating energy efficiency

Water heating energy efficiency class

Annual electricity consumption AEC kWh

Annual fuel consumption AFC

Water heating energy efficiency

Efficiency class controller

Contribution to yearly efficiency

• Please 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 solventDaikin Europe NV 53

Earth connection heat exchanger

Gas valve + ignition unit

CH water pressure sensor

Connecting: Connector X4 24V=

CH pump (5= PWM signal (red), E=earth)

On/off room thermostat and/or frost thermostat (24Vdc or ± 125mA)

Tank sensor or tank thermostat (if through connection 9 – 10 present, then remove it)

Mains cable (2=L (brown), 4=N (blue), E=earth)

CH-pump (8=L (brown), 7=N (blue), E=earth)

Floor heating or group regulation valve. (3=L (brown), 5=switch (black), 6=N (blue)) (EK3WV1AA).

Three-way valve (3=L (brown), 5=switch (black), 6=N (blue)) (EK3WV1AA). Connector X5

NTC 12k Ohm T [°C] R [ohm] T [°C] R [ohm] T [°C] R [ohm]

952Daikin Europe NV 55 10 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.

IPX4D (B23, B33 = IP20)

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Pas applicableDaikin Europe NV 43

NTC 12k ohm T [°C] R [ohm] T [°C] R [ohm] T [°C] R [ohm] T [°C] R [ohm]

Rookgasadapter Parallel 80 mm

• High temperature class C

Toestel + B-pack A = Aanvoer CV G ¾” (ext) B = Retour CV G ¾” (ext) C = Gas G ½” (int) D = Tapwater koud G ½” (ext) E = Tapwater warm G ½” (ext) F = Condensafvoer G ¾” (ext)

4. Monteer de ophangstrip.

Branderpakking defect.

10.1 Technical Product Fiche in accordance to CELEX-32013R0811

NTC 12kOhm T [°C] R [ohm] T [°C] R [ohm] T [°C] R [ohm] T [°C] R [ohm]

87,1 87,2 88,0 Dispersione termica in stand- by

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IPX4D (B23, B33 = IP20)

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

NTC 12k ohm T [°C] R [ohm] T [°C] R [ohm] T [°C] R [ohm] T [°C] R [ohm]

IPX4D (B23, B33 = IP20)

NTC 12k ohm T [°C] R [ohm] T [°C] R [ohm] T [°C] R [ohm] T [°C] R [ohm]

NTC 12k Ohm T [°C] R [ohm] T [°C] R [ohm] T [°C] R [ohm]