EHOB42AAV1H - Boiler DAIKIN - Free user manual and instructions

USER MANUAL EHOB42AAV1H DAIKIN

Installation instructions

1 Safety instructions 5

2 Unit description 6

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

3 Main components 9

3.1 10

4 Installation 11

4.1 Installation measurements 11
4.2 Installation space 13
4.3 Assembly 14

5 Connecting 16

5.1 Connecting CH installation 16
5.2 Connecting electronically 18
5.3 Connect room thermostat 19
5.4 Connecting gas 20
5.5 Flue and air supply duct 21
5.6 Outlet systems 22
5.7 Flue material 23
5.8 Connection to a flue system without air inlet (B23, B33) 25
5.9 Connection to a sealed flue system 26

6 Commissioning the unit and the Installation 34

6.1 Filling and air purge of unit and installation 34
6.2 Commissioning the unit 35
6.3 Switching off the unit 36

7 Setting and adjustment 37

7.1 Direct via operating panel 37
7.2 Parameter settings via the service code 38
7.3 Parameters 38
7.4 Setting maximum CH power 40
7.5 Setting pump setting 40
7.6 Weather dependent regulation 41
7.7 Conversion to different type of gas 42
7.8 Gas/air regulation 42
7.9 Setting gas/air regulation 43

8 Malfunctions 45

8.1 Show last malfunction 45
8.2 Malfunction codes 45
8.3 Other faults 46

9 Maintenance

49

10 Technical specifications

51

10.1 Technical Product Fiche in accordance to CELEX-32013R0811 52
10.2 NTC resistances 53
10.3 Electrical diagram 54

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 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
Daikin EHOB12AAV1H, EHOB18AAV1H, EHOB42ABV1H	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.

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 Central Heating
	Information regarding electrical power supply Voltage, mains frequency, elmax, IP-class)
PMS	Permissible overpressure in CH 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, IT, PL, DE	Countries of Destination (EN 437)
II2H3P, II2Esi3P, I2E(S), I2E3P; II2ELL3P	Approved unit categories (EN 437)
G20-20 mbar G25-25 mbar	Gas group and gas connection pressure as set at the factory (EN 437)
B23, ..., C93(x)	Approved flue gas category (EN 15502)
Tmax	Max. flow temperature in °C
IPX4D	Electrical protection class

1 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 EHOB**A*V1H 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 EHOB**A*V1H 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.

2 UNIT DESCRIPTION

2.1 General

The Daikin EHOB**A*V1H 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 combustible 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 EHOB**A*V1H wall-mounted gas boilers have the CE marking, electrical protection class IPX4D

The unit is delivered for natural gas (G20) as a standard. On request, the unit can also be provided for propane (G31).

2.2 Functioning

The Daikin EHOB**A*V1H wall-mounted gas boiler is a modulating high-efficiency boiler. This means that the power is modulated to suit the required heat demand.

A copper CH circuit is integrated in the aluminum heat exchanger.

The water of the DHW installation can be heated by connecting the unit to an indirectly heated tank using a three-way valve and tank sensor (see par.5.1 and 5.2). The built in tank regulation of the unit ensures the domestic hot water provision takes precedence over the heating. Both cannot work at the same time.

The unit is fitted with an electronic boiler controller, 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.

2.3 Operating modes

The operating mode of the unit is indicated by means of a code on the service display of the operating panel.

Off

The unit is not in operation, but is connected to the electricity supply. No response is given to requests for domestic hot water or CH water. The unit frost protection is active. This means that the pump will start running and the exchanger will be heated up if the temperature of the water in the system drops too far.

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.

Post-running CH

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

7 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.

Selftest

Once every 24 hours, the boiler controller tests the connected sensors. During the test, the relay 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.

Igniting

When the fan has reached the start rpm, the burner relay 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. 5.3)

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 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^ (see par. 7.1). Caution: for a low temperature system, a lower maximum setting may be required than the standard setting of 80^ .

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

EHOB\*\*A\*V1H in combination with indirectly fired tank

The hot water supply takes precedence over the heating. When a tank sensor is used, any CH request will be interrupted when the tank sensor detects a temperature of 5 degrees lower than the set value. After the fan has switched on (code 3) and there has been an ignition (code 4), the boiler controller will switch to domestic water operation (code 5). When a tank thermostat is used, the heat request will start when the thermostat is opened, and it will end when the thermostat closes again. The fanspeed, and therefore the power of the unit, is in that case controlled by the boiler controller on the basis of a fixed leaving water temperature. The domestic hot water temperature can be set between 40^ and 65^ . The set tank temperature is displayed on the operating panel during domestic hot water operation. You can press the service button during tap water operation to read the actual tank temperature.

2.4 PC Interface

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

2.5 Test programs

There is an option in the burner relay, to bring the unit into a test status.

Activating a test program, will switch on the unit with a set fan rotations per minute, without the control functions intervening.

The safety functions do remain active.

The test program is ended by pressing and simultaneously.

Test programs

Description of program	Button combination	Display reading
Burner on with minimum DHW capacity (see parameter d par. 7.2)	and -	"L"
Burner on with set maximum CH power (see parameter 3 par. 7.2)	and +(1x)	"h"
Burner on with maximum DHW power (see parameter 3 par. 7.2)	and +(2x)	"H"
Switching off test program	+ and -	Current operation situation

During test mode the following data can be read :
- By pressing the button continuously in the display the CH water pressure is shown.
- By pressing the button continuously in the display the ionisation current is shown.

2.5.1 Frost protection

• The unit is fitted with frost protection in order to prevent it from freezing. If the temperature of the heat exchanger drops too low, the pump will start running until the temperature of the heat exchanger is sufficiently high. If the frost protection intervenes, the code 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.10.3).

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.

3 MAIN COMPONENTS

A. CH pump
B. Gas valve
C. Burner controller (incl. operating panel)
D. Sensor S1 (flow)
E. Sensor S2 (return)
F. Fan
G. Pressure sensor central heating
H. Connection wire 230V
I. Manual air bleed
J. Inspection glass

K. Flue gas/air inlet concentric adapter
L. Air supply (only when using twin pipe flue system)
M. Connection block / terminal strip X4
N. Condensate collector
O. Siphon
P. Heat exchanger
Q. Operating panel and display
R. Ignition/ionization pin
S. Position of data plate

3.1 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 Ø80x125	EKHY090717
Flue gas adapter Parallel 80 mm	EKHY090707
Propane conversion set EHOB12AAV1H	EKPS075917
Propane conversion set EHOB18AAV1H	EKPS075867
Propane conversion set EHOB42ABV1H	EKHY075787

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

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

CAUTION

• Make sure the valve meets re requirements for the application
• Do not use the gas valve in case of visible damage
• Do not make any modifications to the valve
• Instructions included with the valve must be followed
• Local legislation must be followed

4 INSTALLATION

4.1 Installation measurements

Unit with pipes connected downwards:

Unit + mounting bracket

A =	Supply CH	G 3/4" (ext)
B =	Return CH	G 3/4" (ext)
C =	Gas	G 1/2" (int)
D =	Condense outlet	Ø dn25 (flexible)
h =	517mm	EHOB12AAV1H & EHOB18AAV1H
	637mm	EHOB42ABV1H
H =	590mm	EHOB12AAV1H & EHOB18AAV1H
	710mm	EHOB42ABV1H
Z =	Flue gas outlet/air inlet	Ø60/100 (concentric)

Unit connected to B-pack:

Unit + B-pack

A =	Supply CH	G 3¼" (ext)
B =	Return CH	G 3¼" (ext)
C =	Gas	G 1½" (int)
D =	Condense outlet	Ø dn25 (flexible)
H =	770mm	EHOB12AAV1H & EHOB18AAV1H
	890mm	EHOB42ABV1H
Z =	Flue gas outlet/air inlet	Ø60/100 (concentric)

4.2 Installation space

The unit must be installed against a wall with sufficient load bearing capacity.

In case of light wall constructions, there is a risk of resonance noises.

Within 1 meter of the unit, there must be an 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 2cm next to the boiler. No free space is required due to danger of singeing.

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^2 are required.

4.2.2 Removing cover plate and front panel

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

If you are using the cover plate (A), remove it to the front.
- Unscrew both screws (1) behind the display window.
- Pull the bottom of the front panel (2) forwards.

Danger: risk of burning

In case of high leaving water set points 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^ .

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)

4.3 Assembly

The boiler can be hung to the wall using :

the wall suspension strip and a the connection kit EKVK4AA
a B-pack including an expension vessel and a connection kit.

4.3.1 Assembling suspension strip and assembly bracket

Make sure the construction of the wall is suitable for hanging the boiler.
- Drill the holes for the suspension strip and the connection kit in the wall using the template delivered with the boiler.
- Mount the suspension strip and the assembly bracket horizontally on the wall, using the associated attachment materials.
- The boiler can now be placed on the suspension strip simultaneously sliding the pipes of the boiler into the valves in the assembly bracket.

4.3.2 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 inclined in the B-pack.
- Connect the flexible hose on the expansion vessel and the convection on the return valve. Make sure the seal rings are placed!
- The boiler can now be placed on B-pack simultaneously sliding the pipes of the boiler into the valves in the assembly bracket.

4.3.3 Assembling the unit

1. Unpack the unit.

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

Unit (A)
- Suspension strip (B)
- Siphon + flexible hose (C)
- Installation instructions
- Operating instructions
Warranty card

1. Check the unit for any damage: immediately report damages to the supplier.
2. Install the suspension strip.
3. Check whether the compression rings are positioned straight in the couplings of the assembly bracket.
4. Position the unit: slide it from top to bottom over the suspension strip (B). Make sure the pipes slide into the compression fittings simultaneously.
5. Tighten the compression fittings onto the assembly bracket. The nipples and pipes must not rotate with it!
6. Open the display valve and loosen the two screws on the left and right of the display, and remove the front panel.
7. 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.

IMPORTANT

The unit EHOB42ABV1H may only be connected using the extended siphon provided. In case of any replacement, make sure the correct version is ordered.

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. 0).
3. Assemble the cover and tighten the two screws to the left and the right of the display, and close the display cover.

4.3.4 Apply cover plate (optional)

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

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

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 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 500mm 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. 7.5.

5.1.2 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: This "external heat source" regulation may only be applied if no extra external tank 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.

Connection diagram "external heat source" regulation

A. Boiler
B. Electrical shut-off valve 230V
C. Radiators

T1. Room thermostat zone 1
T2. Room thermostat zone 2
Z1. Zone 1
Z2. Zone 2

Connecting external tank

For the connection of the EHOB**A*V1H to an indirectly fired tank, the following is delivered upon order:

Tank sensor
- Three-way valve set 230V

Connect the tank and three-way valve to the boiler in accordance with the diagram. Remove the through connection between 9 and 10 to connector X4. Connect the three-way valve to connector X2 and connect the tank sensor or thermostat to connector X4 in accordance with the wiring diagram (see par. 10.2).

Connection diagram indirectly fired tank

C. Unit
D. Tanks
E. CH installation
F. Expansion vessel
G. Safety valve 3 Bar
H. Three-way valve
I. Tank sensor or thermostat

Note

When an on/off tank thermostat is used, the heat request will start when the thermostat is opened, and it will end when the thermostat closes again.

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.

5.2 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 3mm

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 will tip downwards in the process.
6. Consult par. 5.2.1 to make the connections.
7. After the required connections have been made, slide the boiler controller back into the unit and return the cover plate, if you are using one.
8. After making the required connections, connect the unit to the socket with safety ground.

5.2.1 Electrical connections

Temperature regulation	Connector X4	Comments
Room thermostat on/off	6 - 7
Modulating thermostat with comfort function in use	11 - 12
Outdoor temperature sensor	8 - 9
Frost thermostat	6 - 7	Parallel over room thermostat
Boiler Sensor	9 - 10	Remove yellow cable bridge

5.3 Connect room thermostat

5.3.1 Room thermostat on/off

1. Connect the room thermostat (see par. 10.2).
2. If necessary, set the feedback resistance of the room thermostat to 0.1 A. If unsure, measure the electrical current and set it accordingly.

The maximum resistance of the thermostat pipe and the room thermostat amounts to a total of 15 Ohm.

5.3.2 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.10.2).

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.

5.3.3 Modulating room thermostat, wireless

rl-module"

The EHOB**A*V1H 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 in order to get to the RF-room thermostat menu.

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

• 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.

1. 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 exit 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.

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 exit the RF room thermostat menu or wait for 1 minute.

5.3.4 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. 10.2).

For the fuel line setting, see the weather dependent regulation (see par. 0).

5.4 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.

5.5 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 syst

Use water instead. The sealing rubbers can be negatively affected when grease is applied.

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

5.5.1 Concentric connection 60/100

The boiler is fitted with a flue gas adapter suitable for connecting to a concentric flue gas extractor system with a diameter of 60/100.

Fit the concentric pipe thoughtfully in the adapter. The built in gaskets ensure there is an air tight seal.

5.5.2 Concentric connection 80/125

If required, the flue gas adapter 60/100 can be replaced by a version for a flue gas extractor system with a 80/125 diameter.

1. Carefully follow the instruction as provided with the adapter set 80/125.
2. Fit the concentric pipe thoughtfully in the adapter. The built in gaskets ensure there is an air tight seal.

5.5.3 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 80mm 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.

5.6 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.

5.7 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 Conation 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

5.8 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).

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

Permitted pipe lengths B23 and B33 when applying 80mm

	C13	C33	C43	C53	C83
EHOB12AAV1H	100 m	100 m	100 m	100 m	100 m
EHOB18AAV1H	100 m	100 m	100 m	100 m	100 m
EHOB42ABV1H	60 m	60 m	60 m	60 m	60 m

5.9 Connection to a sealed flue system.

5.9.1 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.

5.9.2 Permitted pipe lengths in concentric flue tube systems

Permitted pipe lengths when applying concentric 60/100

	C13	C33
EHOB12AAV1H	10 m	11 m
EHOB18AAV1H	10 m	11 m

Permitted pipe lengths when applying concentric 80/125

	C13	C33	C93
EHOB12AAV1H	29 m	29 m	See par. 5.9.8
EHOB18AAV1H	29 m	29 m	See par. 5.9.8
EHOB42ABV1H	29 m	29 m	See par. 5.9.8

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.

1. Mount a non-vertical combustion gas outlet pipe on a slope towards the unit (min. 5mm/m).
2. Fit the assembly brackets in accordance with the assembly instructions of the supplier of the air supply/flue tube system.

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

Permitted pipe lengths when applying 080mm (total of flue pipe and air intake pipe together).

	C13	C33	C43	C53	C83
EHOB12AAV1H	100 m	100 m	100 m	100 m	100 m
EHOB18AAV1H	100 m	100 m	100 m	100 m	100 m
EHOB42ABV1H	60 m	60 m	60 m	60 m	60 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

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.

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

The properties of the combustion determine the choices for the flue material. The flue materials need to be CE approved and provided with the CE marking.

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

Dimensions C63 Flue system (external dimensions in mm)

Parallel	Concentric 80/125		Concentric 60/100
	Flue pipe	Air inlet	Flue pipe	Air inlet
ø 80 +0,3 -0,7	ø 80 +0,3 -0,7	ø 125 +2 -0	ø 60 +0,3 -0,7	ø 100 +2 -0

Flue materials of different markings must not be combined!

5.9.5 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 lenght of the pipes before and aft the first elbow, are no more than 250mm 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 500mm from the boiler.

5.9.6 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:

EHOB12AAV1H & 18AAV1H

100 m

The minimum diameters of the communal output system based on vacuum

	Flue tube diameter
Number of units	EHOB12AAV1H & 18AAV1H
2	130
3	150
4	180
5	200
6	220
7	230
8	250
9	270
10	280
11	290
12	300

IMPORTANT

If you wish to use the unit EHOB42ABV1H in combination with a C83 smoke gas outlet system, please contact Daikin Europe NV.

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.

5.9.7 Combined flue 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
EHOB12AAV1H & 18AAV1H	100 m	10 m	29 m

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

	EHOB12AAV1H &18AAV1H
Number of units	Concentric		Parallel
	Flue outlet	Air inlet	Flue outlet	Air inlet
2	135	253	135	214
3	157	295	157	249
4	166	311	166	263
5	175	328	175	278
6	184	345	184	292
7	193	362	193	306
8	201	376	201	318
9	210	393	210	332
10	219	410	219	347
11	228	427	228	361
12	237	444	237	375
13	246	461	246	389
14	255	478	255	404
15	264	494	264	418
16	272	509	272	431
17	281	526	281	445
18	290	543	290	459
19	299	560	299	473
20	308	577	308	488

IMPORTANT

If you wish to use the unit EHOB42ABV1H in combination with a C43

smoke gas outlet system, please contact Daikin Europe NV.

5.9.8 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 points below have to be considered.

General

• Flue outlet in shaft with 60 or 80mm 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

6 COMMISSIONING THE UNIT AND THE INSTALLATION

6.1 Filling and air purge of unit and installation

6.1.1 CH system

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

The unit may carry out a self-check: (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.

6.1.2 DHW supply (only applicable in indirectly fired tank)

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

6.1.3 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. 7.8).

6.2 Commissioning the unit

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 (n/a for EHOB**A*V1H units)
6 Tap comfort function on (n/a for EHOB**A*V1H units)
7 Operating code
8 Blinking 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 (n/a for EHOB**A*V1H units)
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 ① 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. 7.5).
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.
5. Check the temperature difference between the input and return of the unit and the radiators. This should be approximately 20^ . 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 feed-through 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
6. Switch the unit off.
7. Purge the air from the unit and the installation after cooling down (top up if necessary).
8. Check the heating and the hot water provision for the correct functioning.
9. 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 burner relay 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.

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. 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.

6.3.1 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. 10.3)

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).

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 installers 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 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 button twice. The boiler will then be in normal functional mode again.

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 ⑥ 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^ and 90^ (default value 80^ ).

Press the button until the LED at starts flashing.

Use the + and - button to enter the temperature between 40^ and 65^ (default value 60^ ).

Control of external DHW tank

On: ( ① LED on), The external DHW tank will by heated continuously.
- Eco: (LED on). The boiler will be heated / not heated depending on the information send by the Open Therm thermostat (provided that the thermostat supports this function). When using an on/off room thermostat or an Open Therm thermostat which does not support this function the DHW tank will be heated continuously..
Off: (Both LED's off.) The boiler will not be heated.

Legionella prevention

When the boiler is connected to an indirect heated external DHW tank with a sensor connected to the boiler is possible to heat up the water stored in the tank up to a minimum temperature of 65^ . This procedure can be executed on a daily or on a weekly basis (depending on the setting of parameter L. See § 7.2.

Resetting

Check the nature of the malfunction on the basis of the malfunction codes under par. 8.1 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.

7.2 Parameter settings via the service code

The parameters of the burner relay 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.
2. Use the button to set the parameter you wish to configure, on the service display.
3. Use the + and - button to set the parameter to the required value (visible) on the temperature display.
4. After all the required changes have been entered, press the button until P appears on the service display. The burner relay has now been reprogrammed.

Note

Pressing the ① button will take you out of the menu without saving the parameter changes.

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

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

7.3 Parameters

Parameter	Setting	EHOB**A*V1H			Description
		12	18	42
0	Service code [15]	-	-	-	Access to installers settings, the service code must be entered (=15)
1	Installation type	1	1	1	0= combi1= EHOB**A*V1H + DHW tank2= domestic hot water only3 = 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	99	85	99	Setting reach set value parameter c up to 100% (EHOB12AAV1H, EHOB42ABV1H) and 85% (EHOB18AAV1H)(100 =99 + 1x+
3.	Max. capacity modulating CH pump	80	80	80	Setting range value parameter c. up to 100%
4	Set maximum hot water power	99	85	75	Setting reach value parameter d up to 100% (EHOB12AAV1H, EHOB42ABV1H) and 85% (EHOB18AAV1H)
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 MIT	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 applicable
b	Booster	0	0	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	20	Settings reach 20-50%
c.	Activation external power saving switch input	40	40	40	Setting range 0,15-(value parameter c.)0 = external power saving switch activatedOther values : Min. capacity modulating pump.
d	Minimum rpm hot water	30	30	20	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	70	50	Settings reach 40-99% of the set maximum rpm
F.	Start rpm hot water	70	70	50	Settings reach 40-99% of the set maximum rpm
h	Max. rpm fan (* 100 rpm)	44	45	65	Settings reach 40-50 (EHOB12AAV1H, EHOB18AAV1H and 60-70 (EHOB42ABV1H)This parameter can be used to set the maximum rpm
J	Not applicable	-	-	-	Not applicable
L	Legionella prevention	0	0	0	0 = not active1 = legionella prevention once per week2 = legionella prevention day to day
n	Regulated temperature during boiler operation (Ta)	80	80	85	Setting reach 60°C - 90°C
n.	Hot water temperature at Comfort/Eco	0	0	0	Not active
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	Not active
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	0	0	0	Not active
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 active

7.4 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)
EHOB**A*V1H
12	18	42
11.5		40.9	100
9.5	17.8	34.8	85
9.2	16.8	28.5	80
8.1	14.8	24.5	70
6.9	12.7	20.5	60
5.8	10.6	16.4	50
4.6	8.3	12.3	40
3.4	6.4	10.2	30
-	5.4	7.8	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).

7.5 Setting pump setting

The EHOB**A*V1H CH boilers are fitted with a modulating A-class pump which modulates on the basis for 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.

De minimale doorway stroom hoeveelheid	Ingesteld vermogen
155 l/h	5.4 kW
240l/h	8,5 kW
510 l/h	17,8 kW
750 l/h	26,2 kW
1150 l/h	40,9 kW

Pressure loss graph until CH side

A EHOB12AAV1H & EHOB18AAV1H
B→EHOB42ABV1H
X → Flow over CH circuit in I/h
Y Pressure loss / water head in mH_2O

7.6 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

$$ \left(\text {T m a x} \mathrm {C H} = 8 0 ^ {\circ} \mathrm {C}, \text {T m i n} \mathrm {C H} = 2 5 ^ {\circ} \mathrm {C}, \text {T m i n} \mathrm {e x} = - 7 ^ {\circ} \mathrm {C}, \text {T m a x} \mathrm {e x} = 2 5 ^ {\circ} \mathrm {C}\right) $$

B. Example

$$ \left(\text {T m a x} \mathrm {C H} = 6 0 ^ {\circ} \mathrm {C}, \text {T m i n} \mathrm {C H} = 2 5 ^ {\circ} \mathrm {C}, \text {T m i n} \mathrm {e x} = - 7 ^ {\circ} \mathrm {C}, \text {T m a x} \mathrm {e x} = 2 5 ^ {\circ} \mathrm {C}\right) $$

7.7 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. 0).
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.

7.8 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	Propane
Gas category	2E/H G20	3P / G31
CO2% on Low setting (L) (√ and -)With open cover	See par. 7.9
CO2% at High setting (H) (and 2x)With open cover	See par 7.9
Initial gas pressure (mbar)	20 mbar	30/37/50 mbar

Gas dosing ring	Natural gas	Propane
EHOB12AAV1H	460	315
EHOB18AAV1H	600	480
EHOB42ABV1H	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.

7.9 Setting gas/air regulation

The CO2 setting has been set at the factory and does not require any adjustments, in principle. The setting can be checked by measuring the CO2 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.

CO2 value at maximum power	Natural gas G20 (20 nbar)	Natural gas G25 (25 mbar) Only for Belgium	Propane G31 (30/37/50 mbar)
Maximum value	9.6	8.3	10.8
Minimum value	8.4	7.3	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 CO_2 percentage to the values in the following table.

CO2 value at minimum power	Natural gas G20 (20 mbar)	Natural gas G25 (25 mbar) Only for Belgium	Propane G31 (30/37/50 mbar)
Maximum value	(a)
Minimum value	8.4	7.4	9.4

(a) CO_2 value at maximum power registered at setting High.

11 If the CO2 percentage at maximum and minimum power is within the reach stated in the above tables, the CO2 setting of the boiler is correct. If NOT, adjust the CO_2 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.

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

3 After measuring the CO 2 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 CO2 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.

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	·The flow switch is stuck (malfunction code 11). Clean or replace the flow switch. ·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, dosed 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.

8.3 Other faults

8.3.1 Boiler controller is noisy when igniting

8.3.2 Boiler controller resonates

8.3.3 No heating (CH)

8.3.4 The power is reduced

8.3.5 CH is not reaching correct temperature

8.3.6 No hot water (only applicable in indirectly fired tank)

8.3.7 DHW does not reach desired temperature (only applicable for indirectly fired tank)

8.3.8 CH installation stays warm unwanted

8.3.9 A-label pump LED flashes intermittently red/green

8.3.10 A-label pump LED flashes red

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.

9.1.1 Disassembly

1. Switch the unit off with the ① button.
2. Remove the plug from the socket.
   3.Shut the gas valve.
3. Open the display valve and loosen the two screws on the left and right of the display, and remove the front panel.
4. Wait until the unit has cooled down.
5. Unscrew the coupling nut at the bottom of the flue tube to the left.
6. 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).
7. 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.
8. Take the connector from the fan and the ignition unit from the gas block.
9. Disconnect the coupling under the gas block.
10. 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.
11. 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.
12. Disassemble the retarders which are positioned across the plates of the heat exchanger.

9.1.2 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.

9.1.3 Fitting

Replace the sealing ring around the front plate. When assembling, check the various seals for damage, hardening, (hair) cracks and/or discolouration. Install a new seal where necessary. 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 - 12Nm) .For the sequence of tightening, see image. Please note: The front plate in the image has 11 shoulder bolts (EHOB42ABV1H). The front plate of the EHOB12AAV1H and EHOB18AAV1H 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 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).
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 head 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 ① 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. 7.8) 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.

10 TECHNICAL SPECIFICATIONS

Model name	EHOB12AAV1H	EHOB18AAV1H	EHOB42ABV1H
Condensing boiler	Yes	Yes	Yes
Low temperature boiler	No	No	No
B1 boiler	No	No	No
Combination heater	No	No	No

CH
Nom. load upper value, Qn (Hs)	kW	3,9 – 13,1	6,2 – 20,8	8,7 – 47,2
Nom. load lower value, Qn (Hi)	kW	3,5 – 11,8	5,6 – 18,7	7,8 – 42,5
Nom. output Pn	kW	3,8 - 11,5	6,0 – 17,8	8,3 – 40,9
Max. CH water pressure PMS	bar	3
Max. CH water temperature	°C	90

Other data
Gas consumption G25 (1)	m3/h	0,42 – 1,42	0,64 – 2,25	0,94 – 5,10
Gas consumption G20 (1)	m3/h	0,36 – 1,22	0,55 – 1,94	0,81 – 4,41
Gas consumption G31 (1)	m3/h	0,14 – 0,47	0,21 – 0,74	0,31 – 1,68
Pressure loss of the unit (CH)	mH2O	See par. 7.5
Max. Flue gas temperature	°C	90	90	70
Mass.flow flue gas G20 (max)	g/s	5,5	8,7	19,7
Available fan pressure	Pa	75	75	140
NOx class		6	6	6
NOx	mg/kWh	33	44	53
P1, at 30% of Rated input (30/37)	kW	3,9	6,0	13,6
P4, Rated output (80/60)	kW	11,5	17,8	40,9
η1, Efficiency at P1	%	97,9	96,4	95,9
η4, Efficiency at P4	%	87,9	85,9	86,7
Standby heat loss, Pstby	kW	0,037	0,037	0,038

Electrical data
Mains voltage	V	230
Safety class	IP	IPX4D, (B23, B33 = IP20)
Absorbed power: full load	W	80
Absorbed power: standby	W	2		3,5
Auxiliary electricity consumption at full load (elmax)	kW	0,040	0,035	0,100
Auxiliary electricity consumption at part load (elmin)	kW	0,015	0,015	0,020
Auxiliary electricity consumption in stand by mode (Psb)	kW	0,002	0,002	0,004

Installation measurements and weight
Height	mm	590	590	710
Width	mm	450
Depth	mm	240
Weight	kg	30	30	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
DE (Only EHOB42ABV1H)	II2ELL3P	G20, 20 mbar, G25: 20 mbar, G31: 50 mbar

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

10.1 Technical Product Fiche in accordance to CELEX-32013R0811

Supplier			Daikin Europe NV Zandvoordestraat 300 8400 Oostende Belgium
Type designation			EHOB12AAV1H	EHOB28AAV1H	EHOB42ABV1H
Seasonal space heating energy efficiency class	-	-	A	A	A
Heat rated output	Prated	kW	12	18	41
Annual energy consumption	QHE	GJ	23	37	77
Seasonal space heating energy efficiency	ηs	%	92	91	91
Sound power level	LWA	dB	50	45	55
Efficiency class controller			II	II	II
Contribution to yearly efficiency		%	2,0	2,0	2,0
IMPORTANT · 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 solvent

10.2 NTC resistances

NTC 12k Ohm
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

10.3 Electrical diagram

A Earth connection exchanger

F Fuse (3.15AT)

P1 CH pump

B Ignition cap

G Gas block + ignition module

V Fan

C Boiler controller

I Ignition/ionization pin

S1 Flow temperature sensor

E Earth connections

M Mains electricity supply

S2 Return temperature sensor

Connector X4 24V=

5-

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

6-7

On/off room thermostat (0.1A-24Vdc) and/or frost thermostat

8-9

Outdoor sensor (12 kOhm / 25°C)

9-10

Tank sensor (remove through-connection)

11-12

OpenTherm room thermostat (6-7 should be open)

Connector X2 230V~

2-4

Mains supply 230 V (2 = L (brown), 4 = N (blue))

Electricity supply for fan (230 V, for EHOB42ABV1H only)

7-8

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

3-5-6

Three-way valve for external tank (3 = L (brown), 5 = Switch (black), 6 = N (blue)) (e.g. EK3WV1AA)

Computer interface

Connector X5

11 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

4.2 Installationsort

EHOB12AAV1H & 18AAV1H

100 m

A→EHOB12AAV1H & EHOB18AAV1H
D→EHOB42ABV1H

© 2022 Daikin Europe NV

Instructions d-installation

5.5.3 Raccordement parallele 80/80

EHOB12AAV1H & 18AAV1H 100 m

A. EHOB12AAV1H & EHOB18AAV1H

D. EHOB42ABV1H

© 2022 Daikin Europe NV

EHOB\*\*A\*V1H in combinatie met indirect gestookte tank

• 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 =	Condensafvoer	Ø dn25 (flexibel)
h =	517mm	EHOB12AAV1H & EHOB18AAV1H
	637mm	EHOB42ABV1H
H =	590mm	EHOB12AAV1H & EHOB18AAV1H
	710mm	EHOB42ABV1H
Z =	Rookgasafvoer/lucht toevoer	Ø60/100 (concentrisch)

Aansluitschemaindirectgestookte tank

C.Toestel
D. Tank
E. CV-installatie
F. Expansievat
G. Overstortventiel 3 Bar
H. Driewegklep
I. Tanksensor of thermostat

Opmerking

EHOB12AAV1H & 18AAV1H

100 m

RGA = Rookgasafvoer, LTV = Luchttoevoer

BELANGRIJK

10.1 Technical Product Fiche in accordance to CELEX-32013R0811

© 2022 Daikin Europe NV

EHOB12AAV1H & 18AAV1H

100 m

Pompa CH (8 = L (marrone), 7 = N (blu))

3-5-6

Interfaccia computer

© 2022 Daikin Europe NV

A. EHOB12AAV1H iEHOB18AAV1H

D. EHOB42ABV1H

Kryza gazowa	Gaz ziemny H	Propan P
EHOB12AAV1H	460	315
EHOB18AAV1H	600	480
EHOB42ABV1H	655	525

PRZESTROGA

(1) G20-Gaz ziemny E/H
G25 - gaz ziemny LL/L
G31-LPGPropan