Daikin EKHBH008BB3V3, EKHBH008BB6V3, EKHBH008BB6WN, EKHBH008BB6T1, EKHBH008BB9WN Operation manuals

OPERATION MANUAL

Indoor unit and options for air to water heat

pump system

EKHBH008BB3V3
EKHBH008BB6V3
EKHBH008BB6WN
EKHBH008BB6T1
EKHBH008BB9WN
EKHBH008BB9T1

EKHBX008BB3V3
EKHBX008BB6V3
EKHBX008BB6WN

EKHBH008BB

EKHBX008BB6T1

EKHBX008BB

EKHBX008BB9WN

EKHBH008BB***
EKHBX008BB***

Indoor unit and options for air to water

heat pump system

Operation manual

CONTENTS Page

1. Definitions.................................................................................. 1

1.1. Meaning of warnings and symbols................................................. 1

1.2. Meaning of used terms .................................................................. 2

2. General safety precautions........................................................ 2

3. Introduction................................................................................ 3

3.1. General information........................................................................ 3

3.2. Scope of this manual ..................................................................... 3

4. Operating the unit ...................................................................... 4

4.1. Introduction .................................................................................... 4

4.2. Operating the digital controller ....................................................... 4

Features and functions................................................................... 4

Basic controller functions ............................................................... 4

Clock function................................................................................. 4

Schedule timer function ................................................................. 4

4.3. Name and function of buttons and icons........................................ 5

4.4. Setting up the controller ................................................................. 6

Setting the clock............................................................................. 6

Setting the schedule timer ............................................................. 6

4.5. Description of the operation modes ............................................... 7

Space heating operation (h).......................................................... 7

Space cooling operation (c).......................................................... 7

Domestic water heating operation (w).......................................... 7

Powerful domestic water heating operation ................................... 7

Quiet mode operation (s) ............................................................ 8

4.6. Controller operations...................................................................... 8

Manual operation ........................................................................... 8

Schedule timer operation ............................................................... 9

4.7. Programming and consulting the schedule timer......................... 10

Programming................................................................................ 11

Consulting programmed actions .................................................. 13

Tips and tricks.............................................................................. 13

5. Field settings ........................................................................... 14

5.1. Procedure .................................................................................... 14

Detailed description ..................................................................... 14

Field settings table ....................................................................... 19

6. Maintenance ............................................................................ 22

6.1. Important information regarding the refrigerant used................... 22

6.2. Maintenance activities.................................................................. 22

6.3. Standstill ...................................................................................... 22

7. Troubleshooting ....................................................................... 22

8. Disposal requirements............................................................. 22

Appendix........................................................................................ 23

3. Introduction.............................................................................. 23

3.1. General information...................................................................... 23

4. Operating the unit .................................................................... 23

4.1. Introduction .................................................................................. 23

4.3. Name and function of buttons and icons...................................... 24

4.5. Description of the operation modes ............................................. 24

4.6. Controller operations.................................................................... 24

4.7. Programming and consulting the schedule timer......................... 25

5. Field settings ........................................................................... 28

5.1. Procedure .................................................................................... 28

Detailed description ..................................................................... 28

6. Maintenance ............................................................................ 28

6.3. Standstill ...................................................................................... 28

7. Troubleshooting ....................................................................... 28

This appliance is not intended for use by persons, including children,
with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a person
responsible for their safety.
Children should be supervised to ensure that they do not play with
the appliance.

WARNING

Before operating the unit, be sure the installation has been
carried out correctly by an installer.

If you feel unsure about operation, contact your installer for
advice and information.

1. DEFINITIONS

1.1. Meaning of warnings and symbols

Warnings in this manual are classified according to their severity and
probability of occurrence.

DANGER

Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.

WARNING

Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury. It may also
be used to alert against unsafe practices.

NOTICE

Indicates situations that may result in equipment or
property-damage accidents only.

INFORMATION

This symbol identifies useful tips or additional information.

Some types of danger are represented by special symbols:

Electric current.

Danger of burning and scalding.

CAREFULLY READ THESE INSTRUCTIONS BEFORE
OPERATING THE UNIT. THEY WILL TELL YOU HOW TO
USE THE UNIT PROPERLY. KEEP THIS MANUAL IN A
HANDY PLACE FOR FUTURE REFERENCE.

The original instructions are written in English. All other languages
are translations of the original instructions.

Operation manual

1

Indoor unit and options for air to water heat pump system

EKHBH/X008BB

4PW62571-1 – 10.2010

1.2. Meaning of used terms

Installation manual:

Instruction manual specified for a certain product or application,
explaining how to install, configure and maintain it.

Operation manual:

Instruction manual specified for a certain product or application,
explaining how to operate it.

Maintenance instructions:

Instruction manual specified for a certain product or application,
which explains (if relevant) how to install, configure, operate and/or
maintain the product or application.

Dealer:

Sales distributor for products as per the subject of this manual.

Installer:

Technical skilled person who is qualified to install products as per the
subject of this manual.

User:

Person who is owner of the product and/or operates the product.

Service company:

Qualified company which can perform or coordinate the required
service to the unit.

Applicable legislation:

All international, European, national and local directives, laws,
regulations and/or codes which are relevant and applicable for a
certain product or domain.

Accessories:

Equipment which is delivered with the unit and which needs to be
installed according to instructions in the documentation.

Optional equipment:

Equipment which can optionally be combined to the products as per
the subject of this manual.

Field supply:

Equipment which needs to be installed according to instructions in
this manual, but which are not supplied by Daikin.

2. GENERAL SAFETY PRECAUTIONS

The precautions here, all cover very important topics, so be sure to
follow them carefully.

DANGER: ELECTRICAL SHOCK

Do not touch any switch with wet fingers. Touching a switch
with wet fingers can cause electrical shock. Before
touching electrical parts, turn off all applicable power
supply.

DANGER: DO NOT TOUCH PIPING AND INTERNAL
PA RT S

Do not touch the refrigerant piping, water piping or internal
parts during and immediately after operation. The piping
and internal parts may be hot or cold depending on the
working condition of the unit.

Your hand may suffer burns or frostbite if you touch the
piping or internal parts. To avoid injury, give the piping and
internal parts time to return to normal temperature or, if
you must touch them, be sure to wear protective gloves.

WARNING

■ Never directly touch any accidental leaking
refrigerant. This could result in severe wounds caused
by frostbite.

■ Do not touch the refrigerant pipes during and
immediately after operation as the refrigerant pipes
may be hot or cold, depending on the condition of the
refrigerant flowing through the refrigerant piping,
compressor, and other refrigerant cycle parts. Your
hands may suffer burns or frostbite if you touch the
refrigerant pipes. To avoid injury, give the pipes time to
return to normal temperature or, if you must touch
them, be sure to wear proper gloves.

CAUTION

Do not rinse the unit. This may cause electric shocks or
fire.

EKHBH/X008BB

Indoor unit and options for air to water heat pump system

4PW62571-1 – 10.2010

Operation manual

2

3. INTRODUCTION

3.1. General information

Thank you for purchasing this indoor unit.

The unit is the indoor part of the air to water ERHQ or ERLQ heat
pumps. This unit is designed for wall mounted indoor installation. The
unit can be combined with Daikin fan coil units, floor heating
applications, low temperature radiators, Daikin domestic water
heating applications and Daikin solar kit for domestic hot water
applications.

For installations with restricted power supply, the indoor unit is
configured during the installation to limit the power consumption.

If the restricted power supply condition mode is applicable for your
application, pay special attention to domestic water heating mode
and schedule timer functions. For more details see "Appendix" on

page 23.

NOTICE

If you feel unsure about this topic, contact your installer for
advice and information.

Domestic hot water tank (option)

(2)

An optional domestic hot water tank can be connected to the indoor
unit. The domestic hot water tank is available in 2 types:

■ tank with built-in electrical booster heater (EKHW*) in 3 different
sizes: 150, 200 and 300 litre,

■ tank without electrical booster heater (EKHTS) in 2 different
sizes: 200 and 260 litre.

Solar kit for domestic hot water tank (option)

For information concerning the EKSOLHW solar kit, refer to the
installation manual of that kit.

INFORMATION

The solar kit for domestic hot water tank is only applicable
for the tank with built-in electrical booster heater (EKHW*).

Room thermostat kit (option)

An optional room thermostat EKRTW, EKRTWA, or EKRTR can be
connected to the indoor unit. Refer to the operation manual of the
room thermostat for more information.

3.2. Scope of this manual

INFORMATION

All information and settings in the manual are applicable for
all applications, except the chapters with following footnote
indication: "When the unit is configured for restricted power
supply condition mode, see "Appendix" on page 23".

NOTICE

Restricted power supply condition mode can only be used
for a tank with built-in electrical booster heater (EKHW*).

Heating/cooling units and heating only units

(1)

The unit range consists of two main versions: a heating/cooling
(EKHBX) version and a heating only (EKHBH) version.

Both versions are delivered with an integrated backup heater for
additional heating capacity during low outdoor temperatures. The
backup heater also serves as a backup in case of malfunctioning of
the outdoor unit. The backup heater models are available for a
heating capacity of 3, 6 and 9 kW, and – depending on the heating
capacity – for three different power supply specifications.

Backup heater

Indoor unit model Backup heater capacity

EKHB*008BB3V3 3 kW 1x 230 V

EKHB*008BB6V3 6 kW 1x 230 V

EKHB*008BB6WN 6 kW 3x 400 V

EKHB*008BB9WN 9 kW 3x 400 V

EKHB*008BB6T1 6 kW 3x 230 V

EKHB*008BB9T1 9 kW 3x 230 V

nominal voltage

This manual has been prepared to ensure adequate operation of the
unit.

INFORMATION

The installation of the indoor unit is described in the indoor
unit installation manual.

(1) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.

Operation manual

3

(2) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.

Indoor unit and options for air to water heat pump system

EKHBH/X008BB

4PW62571-1 – 10.2010

4. OPERATING THE UNIT

4.1. Introduction

The heat pump system is designed to provide you a comfortable
indoor climate for many years at low energy consumption.

To get the most comfort with the lowest energy consumption out of
your system, it is very important to observe the items listed below.

Defining possible schedule timer actions for each day and filling out
the form at the very end of this manual can help you minimize the
energy consumption. Ask your installer for support if required.

■ Make sure the heat pump system works at the lowest possible
hot water temperature required to heat your house.
To optimize this, make sure the weather dependent set point is
used and configured to match the installation environment.
Refer to "5. Field settings" on page 14.

■ It is advised to install the room thermostat connected to the
indoor unit. This will prevent excessive space heating and will
stop the outdoor unit and the indoor circulation pump when the
room temperature is above the thermostat set point.

■ Next recommendations only apply to installations with an
optional domestic hot water tank.

■ Make sure the domestic hot water is only heated up to the

domestic hot water temperature you require.
Start with a low domestic hot water temperature set point
(e.g. 45°C), and only increase if you feel that the domestic
hot water supply temperature is not sufficient.

■ Only for tank with built-in electrical booster heater (EKHW*):

Make sure the domestic water heating by booster heater only
start 1 to 2 hours before you expect domestic hot water
usage.

In case you only need a lot of domestic hot water in the
evening or in the morning, only allow domestic water heating
by booster heater during early morning and early evening.
Also keep hours with low electricity cost tariffs in mind.

To do this, program both the domestic water heating and
booster heating schedule timer. Refer to Programming in
chapter "4.7. Programming and consulting the schedule

timer" on page 10.

■ If the domestic hot water is not used for two weeks or more, a

quantity of hydrogen gas which is highly flammable may
accumulate in the domestic hot water tank. To dissipate this
gas safely, it is recommended that a hot tap be turned on for
several minutes at a sink, basin, or bath, but not at a
dishwasher, clothes washer or other appliance. During this
procedure there must be no smoking, open flame or any
electrical appliance operating nearby. If hydrogen is
discharged through the tap, it will probably make a sound as
of air escaping.

(1)

4.2. Operating the digital controller

Operating the EKHB* unit comes down to operating the digital
controller.

CAUTION

Never let the digital controller get wet. This may cause an
electric shock or fire.

Never press the buttons of the digital controller with a hard,
pointed object. This may damage the digital controller.

Never inspect or service the digital controller yourself, ask
a qualified service person to do this.

Features and functions

The digital controller is a state of the art controller that offers full
control over your installation. It can control a heating/cooling and a
heating only installation.

Both installations are available in multiple versions which vary in
capacity, electrical supply and installed equipment (with an optional
domestic hot water tank).

INFORMATION

■ Descriptions in this manual that apply to a specific
installation or that depend on the installed equipment,
are marked with an asterisk (*).

■ Some functions described in this manual may not be
available or should not be available. Ask your installer
or your local dealer for more information on
permission levels.

Basic controller functions

The basic controller functions are:

■ Tu r ning the unit ON/OFF.

■ Operation mode change-over:

- space heating (refer to page 7),

- space cooling (refer to page 7) (*),

- domestic water heating (refer to page 7) (*).

■ Selection of features:

- quiet mode (refer to page 8),

-weather dependent control (refer to page 8).

■ Temperature set point adjustment (refer to page 8).

INFORMATION

(*) The functions 'space cooling' and 'domestic water
heating' can only be selected when the corresponding
equipment is installed.

The digital controller supports a power cut off of maximum 2 hours.
When autorestart is enabled (see "5. Field settings" on page 14) this
allows a power supply shut down of 2 hours without user intervention
(e.g. benefit kWh rate power supply).

(1) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.

EKHBH/X008BB

Indoor unit and options for air to water heat pump system

4PW62571-1 – 10.2010

Clock function

The clock functions are:

■ 24 hour real time clock.

■ Day of the week indicator.

Schedule timer function

The schedule timer function allows the user to schedule the
operation of the installation according to a daily or a weekly program.

Operation manual

4

4.3. Name and function of buttons and icons

1173

5 6 248

7

9

12
10

23
22

34
29

27
30

28

2161815

1. HEATING/COOLING ON/OFF BUTTON y

The ON/OFF button starts or stops the heating or cooling
function of the unit.
When the unit is connected with an external room thermostat,
this button is not operable and the icon e is shown.
Pressing the ON/OFF button consecutively too many times may
cause malfunction of the system (maximum 20 times per hour).

INFORMATION

Remark that pushing the y button has no influence on
the domestic water heating. Domestic water heating is only
switched on or off by means of the v button.

2. OPERATION LED

0

The operation LED is lit during space heating or space cooling
operation. The LED blinks if a malfunction occurs. When the
LED is OFF, space heating or space cooling are inactive while
the other operation modes can still be active.

3. OPERATION MODE ICONS hcws

These icons indicate the current operation mode(s): space
heating (h), space cooling (c), domestic water heating (w) or
quiet mode (s). Within limits, different modes can be combined,
e.g. space heating and domestic water heating. The
corresponding mode icons will be displayed simultaneously.
In a heating only installation, the c icon will never be displayed.
If the domestic hot water tank is not installed, the w icon will
never be displayed.
If the solar option is installed and active, the w icon will be
blinking.

4. EXTERNAL CONTROL ICON e

This icon indicates that the room thermostat (optional) with
higher priority is controlling your installation. This external room
thermostat can start and stop the space heating/cooling
operation and change the operation mode (heating/cooling).
When the external room thermostat with a higher priority is
connected, the schedule timer for space heating and space
cooling will not function.
When the benefit kWh power rate signal is sent, the centralised
control indication e will flash to indicate that benefit kWh power
rate is active.

5. DAY OF THE WEEK INDICATOR 1234567

This indicator shows the current weekday.
When reading or programming the schedule timer, the indicator
shows the set day.

6. CLOCK DISPLAY 8

The clock display shows the current time.
When reading or programming the schedule timer, the clock
display shows the action time.

7. SCHEDULE TIMER ICON p

This icon indicates that the schedule timer is enabled.

Operation manual

5

8. ACTION ICONS Q

These icons indicate the programming actions for each day of
the schedule timer.

9. OFF ICON xx

xx

This icon indicates that the OFF action is selected when
programming the schedule timer.

10. INSPECTION REQUIRED k and l

35
4

14
21

19
11

20
13

These icons indicate that inspection is required on the
installation. Consult your dealer.

11. SET TEMPERATURE DISPLAY 9

The display shows the current space heating/cooling set
temperature of the installation.

12. SETTING $

Not used. For installation purposes only.

25

26

33

32

31

13. NOT AVAILABLE n

This icon is displayed whenever a non-installed option is
addressed or a function is not available.

14. DEFROST/STARTUP MODE ICON

d

This icon indicates that the defrost/startup mode is active.

15. COMPRESSOR ICON ç

This icon indicates that the compressor in the outdoor unit of the
installation is active.

16. BACKUP HEATER STEP ONE ( OR STEP TWO §

(1)

These icons indicate that the backup heater is operating on low
capacity (() or on high capacity (§). The backup heater
provides extra heating capacity in case of low ambient
temperature (high heating load). The backup heater can also
provide auxiliary heating for domestic hot water tank without
electrical booster heater (only for EKHTS).

17. BOOSTER HEATER ICON m (only for tank with built-in

electrical booster heater (EKHW*))
This icon indicates that the booster heater is active. The booster
heater provides auxiliary heating for the domestic hot water
tank.
The booster heater is located in the domestic hot water tank.
The icon is not used when the domestic hot water tank is not
installed.

18. PUMP ICON é

This icon indicates that the circulation pump is active.

19. OUTDOOR TEMPERATURE DISPLAY u

When this icon is flashing, the outdoor ambient temperature is
displayed.

20. WEATHER DEPENDENT SET POINT ICON a

This icon indicates that the controller will adapt the temperature
set point automatically, based on the outdoor ambient
temperature.

21. TEMPERATURE ICON b

This icon is displayed when the water outlet temperature of the
indoor unit, the outdoor ambient temperature and the domestic
hot water tank temperature are shown.
The icon is also displayed when the temperature set point is set
in schedule timer programming mode.
This icon is blinking in case automatic setback function is active.

22. TEST OPERATION ICON

t

This icon indicates that the unit runs in test mode.

23. FIELD SET CODE ;

This code represents the code from the field set list. Refer to the

"Field settings table" on page 19.

24. ERROR CODE

:

This code refers to the error code list and is for service purposes
only. Refer to the error code list in the installation manual.

25. SPACE HEATING/COOLING BUTTON

=

This button allows manual switching between heating or cooling
mode (provided the unit is not a heating only unit).
When the unit is connected with an external room thermostat,
this button is not operable and the icon e is shown.

(1) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.

Indoor unit and options for air to water heat pump system

EKHBH/X008BB

4PW62571-1 – 10.2010

26. DOMESTIC WATER HEATING BUTTON v

This button enables or disables heating of the domestic water.
This button is not used when the domestic hot water tank is not
installed.

INFORMATION

Remark that pushing the y button has no influence
on the domestic water heating. Domestic water
heating is only switched on or off by means of the

v button.

34. QUIET MODE BUTTON

s

This button enables or disables quiet mode.
If the controller is set in permission level 2 or 3 (refer to "5. Field

settings" on page 14), the quiet mode button will not be

operable.

35. BIVALENT FUNCTION OR EXTERNAL BACKUP HEATER

ACTIVE R
This icon indicates that the bivalent function or external backup
heater permission signal is active.

27. WEATHER DEPENDENT SET POINT BUTTON

ba

This button enables or disables the weather dependent set point
function which is available in space heating/cooling operation.
If the controller is set in permission level 2 or 3 (refer to "5. Field

settings" on page 14), the weather dependent set point button

will not be operable.

28. INSPECTION/TEST OPERATION BUTTON z

This button is used for installation purposes and changing field
settings. Refer to "5. Field settings" on page 14.

29. PROGRAMMING BUTTON

<

This multi-purpose button is used to program the controller. The
function of the button depends on the actual status of the
controller or on previous actions carried out by the operator.

30. SCHEDULE TIMER BUTTON r/p

The main function of this multi-purpose button is to enable/
disable the schedule timer.
The button is also used to program the controller. The function of
the button depends on the actual status of the controller or on
previous actions carried out by the operator.
If the controller is set in permission level 3 (refer to "5. Field

settings" on page 14), the schedule timer button will not be

operable.

31. TIME ADJUST BUTTON pi and pj

These multi-purpose buttons are used to adjust the clock, to
toggle between temperatures (refer to "Displaying actual

temperatures" on page 9) and in schedule timer programming

mode.

32. TEMPERATURE ADJUST BUTTONS bi and bj

These multi-purpose buttons are used to adjust the current set
point in normal operation mode or in schedule timer
programming mode. In weather dependent set point mode the
buttons are used to adjust the shift value. Finally, the buttons are
also used to select the weekday while setting the clock.

33. DOMESTIC HOT WATER TEMPERATURE ADJUST BUTTONS

wbi and wbj

(1)

These buttons are used to adjust the current set point of the
domestic hot water temperature (only for [4-03]=0, 1, 2, or 3).
These buttons are used to adjust the current storage set point of
the domestic hot water temperature (only for [4-03]=4 or 5).
The buttons are not used when the domestic hot water tank is
not installed.

4.4. Setting up the controller

After initial installation, the user can set the clock and day of the
week.

The controller is equipped with a schedule timer that enables the
user to schedule operations. Setting the clock and day of the week is
required to be able to use the schedule timer.

Setting the clock

1 Hold down the pr button for 5 seconds.

The clock read-out and the day of week indicator start flashing.

2 Use the

pi and pj buttons to adjust the clock.

Each time the pi or pj button is pressed, the time will
increase/decrease by 1 minute. Keeping the pi or pj
button pressed will increase/decrease the time by 10 minutes.

3 Use the bi or bj button to adjust the day of the week.

Each time the bi or bj button is pressed the next or
previous day is displayed.

4 Press the < button to confirm the current set time and day of the

week.

To leave this procedure without saving, press the pr button.
If no button is pressed for 5 minutes the clock and day of the
week will return to their previous setting.

INFORMATION

The clock needs to be set manually. Adjust the setting
when switching from summertime to wintertime and vice
versa.

Setting the schedule timer

To set the schedule timer, refer to chapter "4.7. Programming and

consulting the schedule timer" on page 10.

NOTICE

The setting [4-03] shall not be modified. The installer
selected the proper setting for your application.

INFORMATION

The status of this setting is only mentioned to indicate
which settings and functions are applicable for your
application.

[4-03]=0, 1, 2, 3, or 4 is only for domestic hot water
tank with built-in electrical booster heater (EKHW*).

[4-03]=5 is only for domestic hot water tank without
electrical booster heater (EKHTS).

(1) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.

EKHBH/X008BB

Indoor unit and options for air to water heat pump system

4PW62571-1 – 10.2010

Operation manual

6

4.5. Description of the operation modes

Space heating operation (h)

In this mode, heating will be activated as required by the water
temperature set point. The set point can be set manually (refer to

"Manual operation" on page 8) or weather dependent (refer to
"Selecting weather dependent set point operation" on page 8).

Startup (d)

At the start of a heating operation, the pump is not started until a
certain refrigerant heat exchanger temperature is reached. This
guarantees correct startup of the heat pump. During startup, icon

d is displayed.

Defrost (d)

In space heating operation or heat pump domestic water heating
operation, freezing of the outdoor heat exchanger may occur due to
low outdoor temperature. If this risk occurs, the system goes into
defrost operation. It reverses the cycle and takes heat from the indoor
system to prevent freezing of the outdoor system. After a maximum
of 8 minutes of defrost operation, the system returns to space
heating operation.

Space cooling operation (c)

In this mode, cooling will be activated as required by the water
temperature set point. The set point can be set manually (refer to

"Manual operation" on page 8) or weather dependent (refer to
"Selecting weather dependent set point operation" on page 8).

INFORMATION

■ Switching between space heating and space cooling

operation can only be done by pressing the =
button or by the external room thermostat.

■ Space cooling operation is not possible if the
installation is a "heating only" installation.

Domestic water heating operation (w)

Only for [4-03]=0, 1, 2, or 3

In this mode, the indoor unit will heat up the domestic hot water tank
by heat pump when the space heating/space cooling operation has
reached its temperature set point or heat pump domestic water
heating has a higher demand request than space side (depends on
DIP switch setting). When necessary and when allowed by the
booster heater schedule timer (refer to "Programming space cooling,

quiet mode, or booster heater mode" on page 12), the booster heater

provides auxiliary heating for the domestic hot water tank.

INFORMATION

■ In order to provide domestic hot water throughout the
day, it is advised to keep the domestic water heating
operation on continuously.

■ The domestic hot water water temperature set point
can only be set manually (refer to "Manual operation"

on page 8).

■ Any domestic water heating operation is impossible
when the domestic hot water tank is not installed.

■ When the w icon is blinking, the domestic hot water is
heating up by the solar kit option and not by the indoor
unit. Refer to installation manual of the EKSOLHW
solar kit.

(1)

Only for [4-03]=4 or 5

In this mode, the indoor unit will heat up the domestic hot water tank.

There are several modes for heating up the domestic water tank:

1. Storage

• Scheduled
The unit will heat up the domestic water tank starting from a

scheduled time and untill the domestic hot water storage set
point is reached. Preferally this is done during nighttime
when space heating demand is the lowest (and if applicable,
electric tariffs are low).

•Powerful
The unit will immediately heat up the domestic water tank

untill domestic hot water storage set point upon user request.

2. Reheat

• Scheduled
The unit will heat up the domestic water tank starting from a

scheduled time and untill the reheat set point is reached.
Preferally this is done during the time of day when space
heating demand is lowest.

• Continuous
The unit will continuously heat up the domestic water tank

untill the reheat set point is reached. In this case a balance
with the space heating demand is made, which ever demand
is higher.

INFORMATION

■ For purpose and configuration refer to "5. Field

settings" on page 14.

■ The domestic hot water storage set point can only be
set manually (refer to "Manual operation" on page 8).

■ The domestic hot water reheat set point can only be
set by the setting [6-07]. Refer to "[6] Scheduled

storage and reheat domestic water heating" on
page 16.

■ Any domestic water heating operation is impossible
when the domestic hot water tank is not installed.

■ When the w icon is blinking, the domestic hot water is
heating up by the solar kit option and not by the indoor
unit. Refer to installation manual of the EKSOLHW
solar kit.

NOTICE

The setting [4-03] shall not be modified. The installer
selected the proper setting for your application.

INFORMATION

The status of this setting is only mentioned to indicate
which settings and functions are applicable for your
application.

[4-03]=0, 1, 2, 3, or 4 is only for domestic hot water tank
with built-in electrical booster heater (EKHW*).

[4-03]=5 is only for domestic hot water tank without
electrical booster heater (EKHTS).

Powerful domestic water heating operation

(2)

In the case of urgent need of domestic hot water, the domestic hot
water temperature set point can be reached quickly by using the
electrical heater. Powerful domestic water heating operation is forcing
the electrical heater to operate until the domestic hot water
temperature set point is reached.

This function remains available in solar operation (only for EKHW*).

(1) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.

Operation manual

7

(2) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.

Indoor unit and options for air to water heat pump system

EKHBH/X008BB

4PW62571-1 – 10.2010

Quiet mode operation (s)

Quiet mode operation means that the outdoor unit works at reduced
capacity so that the sound produced by the outdoor unit drops. This
implies that the indoor heating (cooling) capacity will also drop.
Beware of this when a certain level of heating (cooling) is required
indoors.

4.6. Controller operations

Manual operation

In manual operation, the user manually controls the settings of the
installation. The last setting remains active until the user changes it or
until the schedule timer forces another setting (refer to "Schedule

timer operation" on page 9).

As the controller can be used for a wide variety of installations, it is
possible to select a function which is not available on your
installation. In that case the message n will appear.

Switching on and setting space heating (h) and space cooling
(c)

1 Use the = button to select space heating (h) or space cooling

c).

(
Icon h or c appears on the display as well as the corresponding

water temperature set point.

2 Use the bi and bj buttons to set the desired water

temperature.

•Temperature range for heating: 25°C to 55°C
The temperature for heating can be set as low as 15°C (see

"5. Field settings" on page 14). However, the temperature for

heating should only be set lower than 25°C during
commissioning of the installation. When set lower than 25°C,
only the backup heater will operate.
In order to avoid overheating, space heating is not operable
when the outdoor ambient temperature rises above a certain
temperature (as set through field setting [4-02], refer to

"5. Field settings" on page 14).

•Temperature range for cooling: 5°C to 22°C

CAUTION

The actual operation range depends on the values set on
field setting [9].

These values shall be determined based on the
application.

INFORMATION

In heating mode (h) or cooling mode (c), the water
temperature set point can also be weather dependent (icon

a is shown).

This means that the controller calculates the water
temperature set point based on the outdoor temperature.

In this case the controller shows the calculated controller
set point. The bi button or bj button can be used to
display the actual "shift value" and subsequently, to set the
correct value. This shift value is the temperature difference
between the temperature set point calculated by the
controller and the real set point. E.g. a positive shift value
means that the real temperature set point will be higher
than the calculated set point.

3 Switch on the unit by pushing the

y button.

The operation LED 0 lights up.

INFORMATION

When the unit is connected to an external room
thermostat, buttons = and y are not operable and the
icon e is shown. In this case, the external room
thermostat switches the unit on or off and determines the
operation mode (space heating or space cooling).

Selection and setting of domestic water heating (

w)

1 Use the v button to activate domestic water heating (w).

Icon w appears on the display.

2 Use the wi or wj button to display the actual

temperature set point and subsequently, to set the correct
temperature.

The actual temperature set point only appears on the display
after pressing one of the buttons wi or wj. If no button is
pressed for 5 seconds, the temperature set point will
automatically disappear from the display again.
Temperature range for domestic water heating:

-For EKHW* only: 30°C to 78°C

-For EKHTS only: 30°C to 60°C

INFORMATION

The domestic hot water set point set on the controller
is the actual domestic hot water set point ([4-03]=0, 1,
2, or 3) or the domestic hot water storage set point
([4-03]=4, or 5). See "Domestic water heating

operation (w)" on page 7.

3 Press the

v button to deactivate domestic water heating (w).

Icon w disappears from the display.

INFORMATION

Remark that pushing the y button has no influence
on the domestic water heating. Domestic water
heating is only switched on or off by means of the

v button.

Selecting powerful domestic water heating operation

(1)

1 Press v for 5 seconds to activate powerful domestic water

heating operation.

-For EKHW* only: Icons w and m start flashing

-For EKHTS only: Icons w and § start flashing

(2)

.

(3)

.
Powerful domestic water heating is deactivated automatically
when the set point for the domestic hot water is reached.

Selecting quiet mode operation (s)

1 Use the

s button to activate quiet mode operation (s).

Icon s appears on the display.
If the controller is set in permission level 2 or 3 (refer to "5. Field

settings" on page 14), the

s button will not be operable.

Selecting weather dependent set point operation

1 Press the ba button to select weather dependent set point

operation.
Icon a appears on the display as well as the calculated water

temperature set point based on the outdoor temperature.

2 Use the

bi or bj button to display the actual shift value

and subsequently, to set the correct value.

The shift value only appears on the display after pressing one of
the buttons bi or bj. If no button is pressed for 5
seconds, the shift value will automatically disappear from the
display again.
Range for the shift value: –5°C to +5°C

EKHBH/X008BB

Indoor unit and options for air to water heat pump system

4PW62571-1 – 10.2010

(1) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.
(2) Only applicable for tank with built-in electrical booster heater (EKHW*).
(3) Only applicable for tank without electrical booster heater (EKHTS).

Operation manual

8

Displaying actual temperatures

1 Push the ba button for 5 seconds.

The b icon and the entering water temperature are displayed.
The icons l and = are flashing.

2 Use the pi and pj buttons to display:

Flashing icon(s) Meaning

h or c The entering water temperature

h or c and é The outgoing water temperature after plate heat

h or c and ) The outgoing water temperature after backup

ç The liquid refrigerant temperature

u The outdoor temperature

w The domestic hot water temperature

exchanger

heater

If no button is pressed for 5 seconds, the controller leaves the
display mode.

Schedule timer operation

In schedule timer operation, the installation is controlled by the
schedule timer. The actions programmed in the schedule timer will be
executed automatically.

The schedule timer always follows the last command until a new
command is given. This means that the user can temporarily overrule
the last executed programmed command by manual operation (Refer
to "Manual operation" on page 8). The schedule timer will regain
control over the installation as soon as the next programmed
command of the schedule timer occurs.

The schedule timer is enabled (
not displayed), by pressing the pr button.

INFORMATION

■ Only use the pr button to enable or disable the
schedule timer. The schedule timer overrules the y
button. The y button only overrules the schedule
timer until the next programmed action.

■ If the auto restart function is disabled, the schedule
timer will not be activated when power returns to the
unit after a power supply failure. Press the pr button
to enable the schedule timer again.

■ When power returns after a power supply failure, the
auto restart function reapplies the user interface
settings at the time of the power supply failure.
It is therefore recommended to leave the auto restart
function enabled.

■ The programmed schedule is time driven. Therefore, it
is essential to set the clock and the day of the week
correctly. Refer to "Setting the clock" on page 6.

■ Manually adjust the clock for summertime and
wintertime. Refer to "Setting the clock" on page 6.

■ A power failure exceeding 2 hours will reset the clock
and the day of the week. The schedule timer will
continue operation, but with a disordered clock. Refer
to "Setting the clock" on page 6 to adjust the clock
and the day of the week.

■ The actions programmed in the schedule timer will not
be lost after a power failure so that reprogramming the
schedule timer is not required.

To set up the SCHEDULE TIMER refer to chapter "4.7. Programming

and consulting the schedule timer" on page 10.

p icon displayed) or disabled (p icon

What can the schedule timer do?

The schedule timer allows the programming of:

1. Space heating (refer to "Programming space heating or

domestic water heating" on page 11)

Switch on the desired mode at a scheduled time, in combination
with a set point (weather dependent or manually set).
Four actions per weekday can be programmed, totalling
28 actions.

2. Space cooling (refer to "Programming space cooling, quiet

mode, or booster heater mode" on page 12).

Switch on the desired mode at a scheduled time, in combination
with a set point (weather dependent or manually set). Four
actions can be programmed. These actions are repeated daily.

INFORMATION

When the unit is connected to an external room
thermostat, the schedule timer for space heating and
space cooling is overruled by the external room
thermostat.

3. Quiet mode (refer to "Programming space cooling, quiet mode,

or booster heater mode" on page 12)

Switch the mode on or off at a scheduled time. Four actions can
be programmed per mode. These actions are repeated daily.

4. Domestic water heating (refer to "Programming space heating or

domestic water heating" on page 11)

[4-03]=0, 1, 2, or 3

Switch the mode on or off at a scheduled time. Four actions per
weekday can be programmed, totalling 28 actions.

[4-03]=4 or 5

Switch the mode on or off at a scheduled time. The switch set to
on means enabeling the programmed storage and reheat
operation.

INFORMATION

■ The programmed actions are not stored according to
their timing but according to the time of programming.
This means that the action that was programmed first
gets action number 1, even though it is executed after
other programmed action numbers.

■ When the schedule timer switches space heating or
space cooling x, the controller will also be
switched off. Note that this has no influence on
domestic water heating.

■ [4-03]=4 or 5. In case no domestic water heating
actions are programmed, enabling or disabling the
schedule timer will only have influence on the space
heating, cooling and quite mode. In this way it is
possible to separate on one hand the space heating,
cooling and quite mode scheduled action as part of
the schedule timer and on the other hand the storage
and reheat operation of the domestic water heating.
In this way, it is easy to disable the space heating and
cooling by disabling the schedule timer with keeping
the storage and reheat domestic water heating
enabled (refer to "Scheduled domestic hot water

storage" on page 16 and "Scheduled/continuous
domestic hot water reheat" on page 16).

NOTICE

The setting [4-03] shall not be modified. The installer
selected the proper setting for your application.

Operation manual

9

Indoor unit and options for air to water heat pump system

EKHBH/X008BB

4PW62571-1 – 10.2010

INFORMATION

The status of this setting is only mentioned to indicate
which settings and functions are applicable for your
application.

[4-03]=0, 1, 2, 3, or 4 is only for domestic hot water tank
with built-in electrical booster heater (EKHW*).

[4-03]=5 is only for domestic hot water tank without
electrical booster heater (EKHTS).

What can the schedule timer NOT do?

The schedule timer can not change the operation mode from space
heating to space cooling or vice versa.

How to interpret the programmed actions

To be able to understand the behaviour of your installation when the
schedule timer is enabled, it is important to keep in mind that the
"last" programmed command overruled the "preceding" programmed
command and will remain active until the "next" programmed
command occurs.

Example: imagine the actual time is 17:30 and actions are
programmed at 13:00, 16:00 and 19:00. The "last" programmed
command (16:00) overruled the "previous" programmed command
(13:00) and will remain active until the "next" programmed command
(19:00) occurs.

So in order to know the actual setting, one should consult the last
programmed command. It is clear that the "last" programmed
command may date from the day before. Refer to "Consulting

programmed actions" on page 13.

INFORMATION

During schedule timer operation, someone may have
altered the actual settings manually (in other words, the
"last" command was overruled manually). The icon p,
indicating the schedule timer operation, may still be
displayed, giving the impression that the "last" command
settings are still active. The "next" programmed command
will overrule the altered settings and return to the original
program.

4.7. Programming and consulting the schedule timer

(1)

Getting started

Programming the schedule timer is flexible (you can add, remove or
alter programmed actions whenever required) and straightforward
(programming steps are limited to a minimum). However, before
programming the schedule timer, remind:

■ Familiarise yourself with the icons and the buttons. You will need

them when programming. Refer to "4.3. Name and function of

buttons and icons" on page 5.

■ Fill out the form at the very end of this manual. This form can

help you define the required actions for each day. Keep in mind
that:

- In the space heating and domestic water heating program, 4
actions can be programmed per weekday. The same actions
are repeated on a weekly basis.

- In the space cooling, quiet mode, and booster heater mode
program, 4 actions can be programmed per mode. The same
actions are repeated on a daily basis.

■ Ta ke your time to enter all data accurately.

■ Tr y to program the actions in a chronological way: start with

action 1 for the first action and end with the highest number for
the last action. This is not a requirement but will simplify the
interpretation of the program later.

■ If 2 or more actions are programmed for the same day and at the
same time, only the action with the highest action number will be
executed.

■ You can always alter, add or remove the programmed actions
later.

(2)

EKHBH/X008BB

Indoor unit and options for air to water heat pump system

4PW62571-1 – 10.2010

(1) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.

(2) Only applicable for tank with built-in electrical booster heater (EKHW*).

Operation manual

10

Programming

Programming space heating or domestic water heating Programming space heating or domestic water heating is carried out

as follows:

INFORMATION

Returning to previous steps in the programming procedure
without saving modified settings is done by pressing the
pr button.

1 Press the < button.

The actual mode is blinking.

5 sec

5 sec

2 Use the pi and pj buttons to select the mode you want

to program (space heating

3 Press the < button to confirm the selected mode.

The actual day is blinking.

4 Select the day you would like to consult or to program by means

of the pi and pj buttons.

The selected day is blinking.

5 Press the < button to confirm the selected day.

The first programmed action of the selected day appears.

6 Use the pi and pj buttons to consult the other

programmed actions of that day.

This is called the readout mode. Empty program actions (e.g. 3
and 4) are not displayed.

7 Press the < button for 5 seconds to enter the programming

mode.

8 Use the < button to select the action number you would like to

program or to modify.

9 Use the ba button to select:

■ For space heating:

- x: switch heating and the controller off.

- 9: set the temperature by means of the bi and
bj buttons.

- a: to select automatic temperature calculation.

■ For domestic water heating: use the ba button to enable or
disable the x action.

10 Use the pi and pj buttons to set the correct action time.

11 Repeat steps 8 to 10 to program the other actions of the

selected day.

When all actions have been programmed, make sure that the
display shows the highest action number you would like to save.

12 Press the < button for 5 seconds to store the programmed

actions.

If the < button is pressed when action number 3 is displayed,
actions 1, 2 and 3 are stored but 4 is deleted.
You automatically return to step 6.
By pressing the pr button several times, you return to previous
steps in this procedure and finally return to normal operation.

h or domestic water heating w)

Operation manual

11

5 sec

5 sec

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EKHBH/X008BB

4PW62571-1 – 10.2010

Programming space cooling, quiet mode, or booster heater

(1)

mode

5 sec

5 sec

5 sec

5 sec

Programming space cooling, quiet mode, or booster heater mode
is carried out as follows:

INFORMATION

Returning to previous steps in the programming procedure
without saving modified settings is done by pressing the
pr button.

1 Press the < button.

The actual mode is blinking.

2 Use the pi and pj buttons to select the mode you want

to program (space cooling

(1)

m

).

c, quiet mode s, or booster heating

The selected mode is blinking.

3 Press the < button to confirm the selected mode.

The first programmed action is displayed.

4 Use the pi and pj buttons to consult the programmed

actions.

This is called the readout mode. Empty program actions (e.g. 3
and 4) are not displayed.

5 Press the < button for 5 seconds to enter the programming

mode.

6 Use the < button to select the action number you would like to

program or to modify.

7 Use the pi and pj buttons to set the correct action time.

8 Use the ba button to select:

■ For space cooling:

- x: switch cooling and the controller off.

- 9: set the temperature by means of the bi and
bj buttons.

- a: to select automatic temperature calculation.

(1)

■ For quiet mode and booster heater mode

: use the ba

button to enable or disable the x action.

9 Repeat steps 6 to 8 to program the other actions of the selected

mode.

When all actions have been programmed, make sure that the
display shows the highest action number you would like to save.

10 Press the < button for 5 seconds to store the programmed

actions.

If the < button is pressed when action number 3 is displayed,
actions 1, 2 and 3 are stored but 4 is deleted.
You automatically return to step 4. By pressing the pr button
several times, you return to previous steps in this procedure and
finally return to normal operation.

INFORMATION

Programming the booster heater operation

(1)

time is only

valid if field setting [4-03]=1, 2, or 3.

(1)

(1) Only applicable for tank with built-in electrical booster heater (EKHW*).

EKHBH/X008BB

Indoor unit and options for air to water heat pump system

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Operation manual

12

Consulting programmed actions

To copy programmed actions to the next day, proceed as follows:

1 Press the < button.

Consulting space heating or domestic water heating actions

Consulting space heating or domestic water heating is carried out as
follows.

INFORMATION

Returning to previous steps in this procedure is done by
pressing the pr button.

1 Press the < button.

The actual mode is blinking.

2 Use the pi and pj buttons to select the mode you want

to program (space heating

h or domestic water heating w)

3 Press the < button to confirm the selected mode.

The actual day is blinking.

4 Select the day you would like to consult by means of the pi

and pj buttons.

The selected day is blinking.

5 Press the < button to confirm the selected day.

The first programmed action of the selected day appears.

6 Use the pi and pj buttons to consult the other

programmed actions of that day.

This is called the readout mode. Empty program actions (e.g. 3
and 4) are not displayed.
By pressing the pr button several times, you return to previous
steps in this procedure and finally return to normal operation.

Consulting space cooling, quiet mode, or booster heater

(1)

mode

Consulting space cooling, quiet mode, or booster heater mode

(2)

is

carried out as follows.

INFORMATION

Returning to previous steps in this procedure is done by
pressing the pr button.

1 Press the < button.

The actual mode is blinking.

2 Use the pi and pj buttons to select the mode you want

to consult (space cooling
mode m

(3)

).

c, quiet mode s, or booster heater

The selected mode is blinking.

3 Press the < button to confirm the selected mode.

The first programmed action is displayed.

4 Use the pi and pj buttons to consult the programmed

actions.

This is called the readout mode. Empty program actions (e.g. 3
and 4) are not displayed.
By pressing the pr button several times, you return to previous
steps in this procedure and finally return to normal operation.

Tips and tricks

The actual mode is blinking.

2 Use the pi and pj buttons to select the mode you want

to program.

The selected mode is blinking.
You can leave programming by pressing the pr button.

3 Press the < button to confirm the selected mode.

The actual day is blinking.

4 Select the day you would like to copy to the next day by means

of the pi and pj buttons.

The selected day is blinking.
You can return to step 2 by pressing the pr button.

5 Press the < and pr buttons simultaneously for 5 seconds.

After 5 seconds the display will show the next day (e.g. " 2" if
"1" was selected first). This indicates that the day has been
copied.
You can return to step 2 by pressing the pr button.

Deleting one or more programmed actions

Deleting one or more programmed actions is done at the same time
as storing the programmed actions.

When all actions for one day have been programmed, make sure that
the display shows the highest action number you would like to save.
By pressing the < button for 5 seconds, you store all actions except
those with a higher action number than the one that is displayed.

E.g. when the < button is pressed when action number 3 is
displayed, actions 1, 2 and 3 are stored but 4 is deleted.

Deleting a mode

1 Press the < button.

The actual mode is blinking.

2 Use the pi and pj buttons to select the mode you want

to delete (space cooling c, quiet mode s, or booster heating
mode m

(4)

).

The selected mode is blinking.

3 Press the < and ba button simultaneously for 5 seconds to

delete the selected mode.

Deleting a day of the week (space heating or domestic water
heating mode)

1 Press the < button.

The actual mode is blinking.

2 Use the pi and pj buttons to select the mode you want

to delete (space heating h or domestic water heating w).

The selected mode is blinking.

3 Press the < button to confirm the selected mode.

The actual day is blinking.

4 Select the day you would like to delete by means of the pi

and pj buttons.

The selected day is blinking.

5 Press the < and ba button simultaneously for 5 seconds to

Programming the next day(s)

delete the selected day.

After confirming the programmed actions of a specific day (i.e. after
pressing the < button for 5 seconds), press the pr button once. You
can now select another day by using the pi and pj buttons
and restart consulting and programming.

Copying programmed actions to next day

In heating/domestic water heating program it is possible to copy all
programmed actions of a specific day to the next day (e.g. copy all
programmed actions from "1" to "2").

(1) Only applicable for tank with built-in electrical booster heater (EKHW*).
(2) Only applicable for tank with built-in electrical booster heater (EKHW*).
(3) Only applicable for tank with built-in electrical booster heater (EKHW*). (4) Only applicable for tank with built-in electrical booster heater (EKHW*).

Operation manual

13

Indoor unit and options for air to water heat pump system

EKHBH/X008BB

4PW62571-1 – 10.2010

5. FIELD SETTINGS

NOTICE

The default values mentioned in "Field settings table" on

page 19 are the values from factory. The actual initial

values shall be selected according to your application.
These values shall be confirmed by your installer.

CAUTION

■ The field settings [2] depends on the applicable
legislation.

■ The field settings [9] depends on the application.

■ Before changing these settings, the new values shall

be confirmed by the installer and/or shall be according
to the applicable legislation.

The indoor unit shall be configured by the installer to match the
installation environment (outdoor climate, installed options, etc.) and
user demand. However, the field settings mentioned in "Field settings

table" on page 19 can be modified to customer preferences. Thereto,

a number of so called field settings are available. These field settings
are accessible and programmable through the user interface on the
indoor unit.

Each field setting is assigned a 3-digit number or code, for example
[1-03], which is indicated on the user interface display. The first digit
[1] indicates the 'first code' or field setting group. The second and
third digit [03] together indicate the 'second code'.

A list of all field settings and default values is given under "Field

settings table" on page 19. In this same list, we provided for 2

columns to register the date and value of altered field settings at
variance with the default value.

A detailed description of each field setting is given under "Detailed

description" on page 14.

5.1. Procedure

To change one or more field settings, proceed as follows.

3

1

2

5 Save the new value by pressing the pr button.

6 Repeat step 2 through 4 to change other field settings as

required.

7 When finished, press the z button to exit FIELD SET MODE.

NOTICE

Changes made to a specific field setting are only stored
when the pr button is pressed. Navigating to a new field
setting code or pressing the z button will discard the
change made.

INFORMATION

■ Before shipping, the set values have been set as
shown under "Field settings table" on page 19.

■ When exiting FIELD SET MODE, "88" may be
displayed on the user interface LCD while the unit
initialises itself.

Detailed description

[0] User permission level

If required, certain user interface buttons can be made unavailable for
the user.

Three permission levels are defined (see the table below). Switching
between level 1 and level 2/3 is done by simultaneously pressing
buttons pfi and pfj immediately followed by
simultaneously pressing buttons s and ba, and keeping all 4
buttons pressed for at least 5 seconds (in normal mode). Note that no
indication on the user interface is given. When level 2/3 is selected,
the actual permission level – either level 2 or level 3 – is determined
by the field setting [0-00].

Permission level

Button

Quiet mode button s operable — —

Weather dependent
set point button

Schedule timer enable/
disable button

Programming button < operable — —

Time adjust buttons

Inspection/test
operation button

ba operable — —

pr operable operable —

pfi
pfj

z operable — —

1 2 3

operable — —

1 Press the z button for a minimum of 5 seconds to enter FIELD

SET MODE.
The $ icon (3) will be displayed. The current selected field
setting code is indicated ; (2), with the set value displayed to
the right - (1).

2 Press the bgi button to select the appropriate field

setting first code.

3 Press the bgj button to select the appropriate field

setting second code.

4 Press the pfi button and pfj button to change

the set value of the select field setting.

EKHBH/X008BB

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Operation manual

14

[1] Weather dependent set point

The weather dependent set point field settings define the parameters
for the weather dependent operation of the unit. When weather
dependent operation is active the water temperature is determined
automatically depending on the outdoor temperature: low outdoor
temperatures will result in warmer water and vice versa. During
weather dependent operation, the user has the possibility to shift up
or down the target water temperature by a maximum of 5°C.

■ Field settings for heating operation

■ [1-00] Low ambient temperature (Lo_A): low outdoor

temperature.

■ [1-01] High ambient temperature (Hi_A): high outdoor
temperature.

■ [1-02] Set point at low ambient temperature (Lo_Ti): the
target outgoing water temperature when the outdoor
temperature equals or drops below the low ambient
temperature (Lo_A).
Note that the Lo_Ti value should be higher than Hi_Ti, as for
low outdoor temperatures (i.e. Lo_A) warmer water is
required.

■ [1-03] Set point at high ambient temperature (Hi_Ti): the
target outgoing water temperature when the outdoor
temperature equals or rises above the high ambient
temperature (Hi_A).
Note that the Hi_Ti value should be lower than Lo_Ti, as for
warmer outdoor temperatures (i.e. Hi_A) less warm water
suffices.

■ Field settings for cooling operation

■ [1-05] Weather dependent for cooling function enable (1)/

disable (0)

■ [1-06] Low ambient temperature (Lo2_A): low outdoor
temperature.

■ [1-07] High ambient temperature (Hi2_A): high outdoor
temperature.

■ [1-08] Set point at low ambient temperature (Lo2_Ti): the
target outgoing water temperature when the outdoor
temperature equals or drops below the low ambient
temperature (Lo2_A).
Note that the Lo2_Ti value should be higher than Hi2_Ti, as
for low outdoor temperatures (i.e. Lo2_A) less cold water
suffices.

■ [1-09] Set point at high ambient temperature (Hi2_Ti): the
target outgoing water temperature when the outdoor
temperature equals or rises above the high ambient
temperature (Hi2_A).
Note that the Hi2_Ti value should be lower than Lo2_Ti, as
for warmer outdoor temperatures (i.e. Hi2_A) colder water is
required.

T

t

Lo_Ti

Lo2_Ti

Hi_Ti

Hi2_Ti

+ 05

– 05

00

Shift value

[2] Disinfection function

(1)

Applies only to installations with a domestic hot water tank.

The disinfection function disinfects the domestic hot water tank by
periodically heating the domestic hot water to a specific temperature.

CAUTION

The disinfection function field settings must be configured
by the installer according to the applicable legislation.

■ [2-00] Operation interval: day(s) of the week at which the
domestic hot water should be heated.

■ [2-01] Status: defines whether the disinfection function is
turned on (1) or off (0).

■ [2-02] Start time: time of the day at which the domestic hot
water should be heated.

■ [2-03] Set point: high water temperature to be reached.

■ [2-04] Interval: time period defining how long the set point

temperature should be maintained.

T

DHW

[2-03]

T

H

T

U

00.00 22.00 24.0001.00 23.00 t

T

Domestic hot water temperature

DHW

User set point temperature (as set on the user interface)

T

U

High set point temperature [2-03]

T

H

t Time

[2-04]

[2-02]

WARNING

Be aware that the domestic hot water temperature at the
hot water tap will be equal to the value selected in field
setting [2-03] after a disinfection operation.

When the high domestic hot water temperature can be a
potential risk for human injuries, a mixing valve (field
supply) shall be installed at the hot water outlet connection
of the domestic hot water tank. This mixing valve shall
secure that the hot water temperature at the hot water tap
never rises above a set maximum value. This maximum
allowable hot water temperature shall be selected
according to the applicable legislation.

CAUTION

Make sure that the disinfection function start time [2-02]
with defined duration [2-04] is not interrupted by possible
domestic hot water demand.

Shift value Shift value

Operation manual

15

Lo_A

Lo2_A

TtTarget water temperature

Ambient (outdoor) temperature

T

A

Hi_A

Hi2_A

T

A

(1) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.

Indoor unit and options for air to water heat pump system

EKHBH/X008BB

4PW62571-1 – 10.2010

Only for tank without electrical booster heater (EKHTS)

According to local and national regulations, it may be required to
disinfect the domestic hot water tank at a higher temperature
(>60°C). In that case Daikin suggests to install a shunt pump and a
heater element parallel on the domestic hot water tank according to
the figure below.

2
1

6

1 Domestic hot water tank
2 Shunt pump (field supply)
3 Heater element (field supply)
4 Non-return valve (field supply)
5 Shower (field supply)
6 Indoor unit

3 5

4

Scheduled/continuous domestic hot water reheat

■ [6-05] Reheat: defines whether the scheduled domestic water
reheat during daytime is enabled (1) or continuous reheat is
enabled (2) or reheat is disabled (0)

■ [6-06] Scheduled reheat start time: time of the day at which the
domestic water should be heated.

■ [6-07] Domestic hot water reheat set point

■ [6-08] Domestic hot water reheat set point hysteresis

Example 1: Scheduled storage [6-03]=1, scheduled reheat [6-05]=1,
disinfection function [2-01]=1 activated.

T

A B C

[2-03]

T

DHW

WARNING

Never heat up the domestic water tank temperature higher
than 80°C. This will cause damage to the equipment and
potentially danger of leakage of hot water which can cause
burning wounds.

[3] Auto restart

When power returns after a power supply failure, the auto restart
function reapplies the user interface settings at the time of the power
supply failure.

NOTICE

It is therefore recommended to leave the auto restart
function enabled.

Note that with the function disabled the schedule timer will not be
activated when power returns to the unit after a power supply failure.
Press the pr button to enable the schedule timer again.

■ [3-00] Status: defines whether the auto restart function is
turned ON (0) or OFF (1).

NOTICE

If the benefit kWh rate power supply is of the type that
power supply is interrupted, then always allow the auto
restart function.

If you feel unsure about this topic, contact your installer for
advice and information.

[6-07]

[6-04] [6-06] [2-02]

AScheduled storage operation: activated at [6-04], heat

up domestic hot water untill domestic hot water user
interface set point T

BScheduled reheat operation: activated at [6-06], heat up

domestic hot water untill domestic hot water reheat set
point [6-07] (e.g 45°C ) is reached.

C Disinfection operation (if activated): activated at [2-02],

heat up domestic hot water untill domestic hot water
disinfection set point [2-03] (e.g 60°C) is reached. Refer to

"[2] Disinfection function" on page 15.

t Time

T Domestic hot water temperature

Domestic hot water user interface set point

T

DHW

(e.g 55°C) is reached.

DHW

Example 2: Scheduled storage [6-03]=1, continuous reheat [6-05]=2,
disinfection function [2-01]=1 activated.

T

A B C

B

[2-03]

T

DHW

[6-07]

t

[4] Space heating off temperature

Space heating off temperature

■ [4-02] Space heating off temperature: outdoor temperature
above which space heating is turned off to avoid overheating.

[6] Scheduled storage and reheat domestic water heating

(1)

INFORMATION

The scheduled storage and reheat domestic water heating
will only be carried out when [4-03]=4 or 5 and the
domestic water heating mode is enabled by the w button.

Scheduled domestic hot water storage

The storage set point can be accessed directly using the wi and

wj buttons.

■ [6-03] Scheduled storage: defines whether the scheduled
domestic water heating storage during night is enabled (1) or
not (0).

■ [6-04] Scheduled storage start time: time of the night at which
the domestic water should be heated.

(1) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.

EKHBH/X008BB

Indoor unit and options for air to water heat pump system

4PW62571-1 – 10.2010

[6-08]

[6-04] [2-02]

AScheduled storage operation: activated at [6-04], heat

up domestic hot water untill domestic hot water user
interface set point T

B Continuous reheat operation: continues activated heat

up domestic water till domestic hot water reheat set point
[6-07] (e.g 45°C) is reached with a hysteresis of [6-08].

C Disinfection operation (if activated): activated at [2-02],

heat up domestic hot water untill domestic hot water
disinfection set point [2-03] (e.g 60°C) is reached. Refer to

"[2] Disinfection function" on page 15.

t Time

T Domestic hot water temperature

Domestic hot water user interface set point

T

DHW

(e.g 55°C) is reached.

DHW

Operation manual

t

16

INFORMATION

■ Make sure the domestic water is only heated up to the
domestic hot water temperature you require.
Start with a low domestic hot water storage
temperature set point, and only increase if you feel
that the domestic hot water supply temperature is not
sufficient for your needs (this depends on your water
using pattern).

■ Make sure the domestic water is not heated
unnecessary. Star t with activating automatic storage
during night (default setting). If it seems that the
domestic hot water night storage operation is not
sufficient for your needs, an additional scheduled
reheat during daytime can be set.

NOTICE

The setting [4-03] shall not be modified. The installer
selected the proper setting for your application.

[9-05~9-08] Automatic setback function

Setback function provides the possibility to lower the water
temperature during space heating. The setback function can for
instance be activated during the night because the temperature
demands during night and day are not the same.

INFORMATION

■ Remark that the b icon will be flashing during setback

operation. The calculated leaving water setback set
point is not shown during setback operation.

■ By default the setback function is disabled.

■ The setback function can be combined with the

automatic weather dependent set point operation.

■ Setback function is an automatic daily scheduled
function.

■ The setback function can be combined with the
schedule timer. When setback is active, the scheduled
space heating set point will be lowered with the [9-08]
leaving water setback value.

INFORMATION

The status of this setting is only mentioned to indicate
which settings and functions are applicable for your
application.

[4-03]=4 is only for domestic hot water tank with built-in
electrical booster heater (EKHW*).

[4-03]=5 is only for domestic hot water tank without
electrical booster heater (EKHTS).

[9] Heating and cooling set point ranges

The purpose of this field setting is to prevent the user from selecting
a wrong (i.e., too hot or too cold) leaving water temperature. Thereto
the heating temperature set point range and the cooling temperature
set point range available to the user can be configured.

CAUTION

■ In case of a floor heating application, it is important to
limit the maximum leaving water temperature at
heating operation according to the specifications of
the floor heating installation.

■ In case of a floor cooling application, it is important to
limit the minimum leaving water temperature at
cooling operation (field setting of parameter [9-03]) to
16~18°C to prevent condensation on the floor.

■ [9-00] Heating set point upper limit: maximum leaving water
temperature for heating operation.

■ [9-01] Heating set point lower limit: minimum leaving water
temperature for heating operation.

■ [9-02] Cooling set point upper limit: maximum leaving water
temperature for cooling operation.

■ [9-03] Cooling set point lower limit: minimum leaving water
temperature for cooling operation.

■ [9-05] Status: defines whether the setback function is turned
ON (1) or OFF (0)

■ [9-06] Start time: time at which setback is started

■ [9-07] Stop time: time at which setback is stopped

■ [9-08] Leaving water setback value

T

55°C

A

2°C [9-08]

53°C

B

[9-06] [9-07]

A Normal leaving water temperature set point or calculated

weather depended set point

B Calculated leaving water setback temperature set point

t Time

T Temperature

INFORMATION

Only applicable if [4-03]=4 or 5!

It is advised to set the start time of automatic storage
during night [6-04] on the moment that the setback function
starts [9-06].

INFORMATION

Pay attention not to set the setback value too low,
especially during colder periods (e.g. winter time). It is
possible that the room temperature can not be reached (or
it will take a much longer time) because of the big
temperature difference.

[C] Setup on solar kit

Solar priority mode

■ [C-00] Solar priority mode setting: for information concerning
the EKSOLHW solar kit, refer to the installation manual of
that kit.

t

Operation manual

17

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EKHBH/X008BB

4PW62571-1 – 10.2010

[d] Local shift value weather dependent

Local shift value weather dependent

The local shift value weather dependent field setting is only relevant
in case weather dependent set point (see field setting "[1] Weather

dependent set point" on page 15) is selected.

■ [d-03] Local shift value weather dependent: determines the
shift value of the weather dependent set point around
outdoor temperature of 0°C.

T

t

[1-02]

L

[1-03]

R

[1-00] 0°C [1-01]

TtTarget water temperature

Outdoor temperature

T

A

R Range

[1-00]~[1-04] Applicable field settings of the weather dependent set

[d-03]

L Local shift value

point [1].

Outdoor temperature range

0— —

1

24

3

44

(T

) Local shift value

A

–2°C~2°C

–4°C~4°C

T

A

2

2

[E] Unit information readout

■ [E-00] Readout of the software version (example: 23)

■ [E-01] Readout of the EEPROM version (example: 23)

■ [E-02] Readout of the unit model identification (example: 11)

■ [E-03] Readout of the liquid refrigerant temperature

■ [E-04] Readout of the inlet water temperature

INFORMATION

[E-03] and [E-04] readouts are not permanently
refreshed. Temperature readouts are updated after
looping through the field setting first codes again only.

EKHBH/X008BB

Indoor unit and options for air to water heat pump system

4PW62571-1 – 10.2010

Operation manual

18

Field settings table

First

Second
code

code

0 User permission level

00 User permission level 3 2/3 1 —

1 Weather dependent set point

00 Low ambient temperature (Lo_A) –10 –20~5 1 °C

01 High ambient temperature (Hi_A) 15 10~20 1 °C

02 Set point at low ambient temperature (Lo_Ti) 40 25~55 1 °C

03 Set point at high ambient temperature (Hi_Ti) 25 25~55 1 °C

05 Weather dependent for cooling function

enable/disable

06 Low ambient temperature (Lo2_A) 20 10~25 1 °C

07 High ambient temperature (Hi2_A) 35 25~43 1 °C

08 Set point at low ambient temperature (Lo2_Ti) 22 5~22 1 °C

09 Set point at high ambient temperature (Hi2_Ti) 18 5~22 1 °C

2 Disinfection function

00 Operation interval Fri Mon~Sun, All — —

01 Status 1 (ON) 0/1 — —

02 Start time 23:00 0:00~23:00 1:00 hour

03 Set point (only in combination with domestic hot

water tank without electrical booster heater
(EKHTS))

03 Set point (only in combination with domestic hot

water tank with built-in electrical booster heater
(EKHW*))

04 Interval (only in combination with domestic hot

water tank without electrical booster heater
(EKHTS))

04 Interval (only in combination with domestic hot

water tank with built-in electrical booster heater
(EKHW*))

3 Auto restart

00 Status 0 (ON) 0/1 — —

4 Space heating off temperature

00 Installation related setting

01 Installation related setting

02 Space heating off temperature 25 14~25 1 °C

03 Installation related setting

04 Not applicable. Do not change the default value. — — — —

05 Not applicable. Do not change the default value. — — — —

06 Installation related setting

07 Installation related setting

5 Installation related setting

00 Installation related setting

01 Installation related setting

02 Installation related setting

03 Installation related setting

04 Installation related setting

Setting name

Installer setting at variance with default value

Default

value

0 (OFF) 0/1 — —

60 fixed 5 °C

70 55~80 5 °C

60 40~60 5 min

10 5~60 5 min

Range Step UnitDate Value Date Value

Operation manual

19

Indoor unit and options for air to water heat pump system

EKHBH/X008BB

4PW62571-1 – 10.2010

First
code

Second
code

Setting name

Installer setting at variance with default value

Default

value

Range Step UnitDate Value Date Value

6 Installation related setting

00 Installation related setting

01 Installation related setting

02 Not applicable. Do not change the default value. — — — —

Scheduled storage and reheat domestic water heating

(a)

03 Scheduled time storage 1 (ON) 0/1 1 —

04 Scheduled time storage start time 1:00 0:00~23:00 1:00 hour

05 Scheduled time reheat or continuous reheat 0 (OFF) 0/1/2 1 —

06 Scheduled time reheat start time 15:00 0:00~23:00 1:00 hour

07 Domestic hot water reheat set point 45 30~50 1 °C

08 Domestic hot water reheat set point hysteresis 10 2~20 1 °C

7 Installation related setting

00 Installation related setting

01 Installation related setting

02 Installation related setting

03 Installation related setting

04 Installation related setting

8 Installation related setting

00 Installation related setting

01 Installation related setting

02 Installation related setting

03 Installation related setting

04 Installation related setting

9 Heating and cooling set point ranges

00 Heating set point upper limit 55 37~55 1 °C

01 Heating set point lower limit 25 15~37 1 °C

02 Cooling set point upper limit 22 18~22 1 °C

03 Cooling set point lower limit 5 5~18 1 °C

04 Installation related setting

Automatic set back function

05 Set back operation 0 (OFF) 0/1 1 —

06 Set back operation start time 23:00 0:00~23:00 1:00 hour

07 Set back operation stop time 5:00 0:00~23:00 1:00 hour

08 Leaving water set back value 2 0~10 1 °C

C Solar kit

00 Solar priority mode setting 0 0/1 1 —

01 Installation related setting

02 Installation related setting

03 Installation related setting

04 Installation related setting

05 Not applicable. Do not change the default setting. — — — —

EKHBH/X008BB

Indoor unit and options for air to water heat pump system

4PW62571-1 – 10.2010

Operation manual

20

First
code

Second
code

Setting name

Installer setting at variance with default value

Default

value

Range Step UnitDate Value Date Value

d Local shift value weather dependent

00 Installation related setting

01 Installation related setting

02 Installation related setting

03 Local shift value weather dependent 0 (OFF) 0/1/2/3/4 1 —

04 Not applicable. Do not change the default value. — — — —

05 Installation related setting

06 Not applicable. Do not change the default value. — — — —

E Unit information readout

00 Software version Read only — — —

01 EEPROM version Read only — — —

02 Unit model identification. Do not change the default

value.

depending

on model

———

03 Liquid refrigerant temperature Read only — 1 °C

04 Inlet water temperature Read only — 1 °C

F Installation related setting

00 Installation related setting

01 Installation related setting

02 Installation related setting

03 Installation related setting

04 Installation related setting

Installation related setting

05 Installation related setting

06 Installation related setting

07 Installation related setting

08 Installation related setting

09 Installation related setting

(a) When the unit is configured for restricted power supply condition mode, these settings are not applicable.

Operation manual

21

Indoor unit and options for air to water heat pump system

EKHBH/X008BB

4PW62571-1 – 10.2010

6. MAINTENANCE

6.3. Standstill

(1)

6.1. Important information regarding the refrigerant used

This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol.

Refrigerant type: R410A

(1)

GWP

value: 1975

(1)

GWP = global warming potential

Periodical inspections for refrigerant leaks may be required
depending on the applicable legislation. Please contact your local
dealer for more information.

6.2. Maintenance activities

DANGER

■ Do not touch water pipes during and immediately after
operation as the pipes may be hot. Your hand may
suffer burns. To avoid injury, give the piping time to
return to normal temperature or be sure to wear
proper gloves.

■ Do not touch any switch with wet fingers. Touching a
switch with wet fingers can cause electrical shock.

WARNING

Do not touch the refrigerant pipes during and immediately
after operation as the refrigerant pipes may be hot or cold,
depending on the condition of the refrigerant flowing
through the refrigerant piping, compressor, and other
refrigerant cycle parts. Your hands may suffer burns or
frostbite if you touch the refrigerant pipes. To avoid injury,
give the pipes time to return to normal temperature or, if
you must touch them, be sure to wear proper gloves.

NOTICE

During longer periods of standstill, e.g. during summer
with a heating only application, it is very important NOT TO
SWITCH OFF THE POWER SUPPLY towards the unit.

Switching off the power supply stops the automatic
repetitive movement of the pump in order to prevent it from
getting jammed.

7. TROUBLESHOOTING

The guidelines below might help to solve your problem. If you cannot
solve the problem, consult your installer.

POSSIBLE CAUSES CORRECTIVE ACTIONS

No readings on the remote controller
(blank display)

One of the error codes appears Consult your local dealer.

The schedule timer does work but
the programmed actions are
executed at the wrong time.
(e.g. 1 hour too late or too early)

The schedule timer is programmed
but does not work.

Capacity shortage Consult your local dealer.

Temperature values displayed on the
remote controller (user interface) are
displayed in °F instead of °C.

(a) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.

• Check if the mains power is still
connected to your installation.

• The benefit kWh rate power
supply is active (see installation

(a)

manual).

Refer to the installation manual for a
detailed list of error codes.

Check if the clock and the day of the
week are set correctly, correct if
necessary.

In case the pr icon is not displayed,
push the pr button to enable the
schedule timer.

To change the display back to °C,
push ib and jb buttons
simultaneously for 5 seconds.
Execute same procedure to change
back to the °F display. The default
temperature display is in °C.

In order to ensure optimal availability of the unit, a number of checks
and inspections on the unit and the field wiring have to be carried out
at regular intervals, preferably yearly. This maintenance should be
carried out by your local Daikin technician (see installation manual).

The only maintenance which may be required by the operator is:

■ keeping the remote controller clean by means of a soft damp
cloth,

■ checking if the water pressure indicated on the manometer is
above 1 bar.

Only for the optional domestic hot water tank:

■ A check for correct operation of the pressure relief valve
installed on your domestic hot water tank, has to be carried out
at least every 6 months: it is important that the lever on the valve
is actuated to prevent accumulation of mineral deposits that may
impair valve operation and to confirm that the valve and
discharge pipe are not blocked. The lever should be operated
slowly and smoothly to avoid a sudden rush of hot water from
the discharge pipe.
Failure to operate the relief valve actuating lever may result in
the domestic hot water tank exploding.

■ Continuous leakage of water from the discharge pipe may
indicate a problem with the domestic hot water tank.

■ If a discharge pipe is connected to the pressure relief device it
must be installed in a continuously downward direction and in a
frost-free environment. It must be left open to the atmosphere.

CAUTION

If the supply cord is damaged, it must be replaced by the
manufacturer, its agent or similar qualified persons in order
to avoid hazards.

EKHBH/X008BB

Indoor unit and options for air to water heat pump system

4PW62571-1 – 10.2010

8. DISPOSAL REQUIREMENTS

Dismantling of the unit, treatment of the refrigerant, of oil and of other
parts must be done in accordance with the applicable legislation.

Your product is marked with this symbol. This means that
electrical and electronic products shall not be mixed with
unsorted household waste.

Do not try to dismantle the system yourself: the
dismantling of the system, treatment of the refrigerant, of oil and
other parts must be done by a qualified installer in accordance with
the applicable legislation.

Units must be treated at a specialized treatment facility for re-use,
recycling and recovery. By ensuring this product is disposed off
correctly, you will help to prevent potential negative consequences for
the environment and human health. Please contact the installer or
local authority for more information.

(1) When the unit is configured for restricted power supply condition mode,

see "Appendix" on page 23.

Operation manual

22

APPENDIX (for restricted power supply condition mode only)

INFORMATION

All information and settings in the manual are applicable for
this application, except the information and settings
mentioned in this appendix.

NOTICE

Restricted power supply condition mode can only be used
for a tank with built-in electrical booster heater (EKHW*).

3. INTRODUCTION

3.1. General information

Heating/cooling units and heating only units

The unit range consists of two main versions: a heating/cooling
(EKHBX) version and a heating only (EKHBH) version.

Both versions are delivered with an integrated backup heater. The
backup heater only serves as a backup in case of malfunctioning of
the outdoor unit. In this application with restricted power supply
condition mode, the backup heater should be considered as
emergency backup heater.

Domestic hot water tank (option)

An optional domestic hot water tank can be connected to the indoor
unit. Only the tank with built-in electrical booster heater (EKHW*) in 3
different sizes: 150, 200 and 300 litre, can be connected to the indoor
unit.

Refer to the domestic hot water tank installation manual for further
details.

4. OPERATING THE UNIT

4.1. Introduction

The heat pump system is designed to provide you a comfortable
indoor climate for many years at low energy consumption.

To get the most comfort with the lowest energy consumption out of
your system, it is very important to observe the items listed below.

Defining possible schedule timer actions for each day and filling out
the form at the very end of this manual can help you minimize the
energy consumption. Ask your installer for support if required.

■ Make sure the heat pump system works at the lowest possible
hot water temperature required to heat your house.
To optimize this, make sure the weather dependent set point is
used and configured to match the installation environment.
Refer to "5. Field settings" on page 14.

■ It is advised to install the room thermostat connected to the
indoor unit. This will prevent excessive space heating and will
stop the outdoor unit and the indoor circulation pump when the
room temperature is above the thermostat set point.

■ Next recommendations only apply to installations with an
optional domestic hot water tank.

■ Make sure the domestic hot water is only heated up to the

domestic hot water temperature you require.
Start with a low domestic hot water temperature set point
(e.g. 45°C), and only increase if you feel that the domestic
hot water supply temperature is not sufficient.

■ Only for tank with built-in electrical booster heater (EKHW*):

Make sure the domestic water heating by booster heater only
start 1 to 2 hours before you expect domestic hot water
usage.

In case you only need a lot of domestic hot water in the
evening or in the morning, only allow domestic water heating
by booster heater during early morning and early evening.
Also keep hours with low electricity cost tariffs in mind.

To do this, program both the domestic water heating and
booster heating schedule timer. Refer to Programming in
chapter "4.7. Programming and consulting the schedule

timer" on page 10.

■ If the domestic hot water is not used for two weeks or more, a

quantity of hydrogen gas which is highly flammable may
accumulate in the domestic hot water tank. To dissipate this
gas safely, it is recommended that a hot tap be turned on for
several minutes at a sink, basin, or bath, but not at a
dishwasher, clothes washer or other appliance. During this
procedure there must be no smoking, open flame or any
electrical appliance operating nearby. If hydrogen is
discharged through the tap, it will probably make a sound as
of air escaping.

INFORMATION

For installations with restricted power supply, the indoor
unit allow operation of backup heater only, booster heater
only or outdoor unit only.

Read attentively following information to understand the
unit operation.

Operation manual

23

Indoor unit and options for air to water heat pump system

EKHBH/X008BB

4PW62571-1 – 10.2010

A

PPENDIX (for restricted power supply condition mode only)

Emergency backup heater operation always has
priority over compressor or booster heater operation.

Emergency backup heater operation occurs because of:

■ User request to heat up water to the space heating
loops. The temperature of this water is too low and is
out of the operation range (during initial start-up for
example). Refer to "Initial start-up at low outdoor
ambient temperatures" and "Re-start at low outdoor
ambient temperatures" in the installation manual.

■ During heating operation the water temperature
becomes too low and drops out of the operation
range. Refer to "Checking the water volume and
expansion vessel pre-pressure" in the installation
manual to minimize the backup heater operation.

■ Malfunction of the heat pump unit.

If during backup heater operation the heating load is higher
than the heater capacity, the water temperature can not
increase. In this case refer to "Re-start at low outdoor
ambient temperatures" in the appendix of the installation
manual.

INFORMATION

Balance between space heating/cooling demand and
domestic hot water demand

■ Domestic water heating by compressor becomes only
possible if the space heating/cooling requested set
point is reached.
To ensure domestic hot water production, the
schedule timers must be used to disable space
heating/cooling. Refer to "Programming and

consulting the schedule timer" on page 25.

■ Booster heater operation is only possible when the
compressor of the heat pump is not operating. The
compressor operates because of space heating/
cooling demand or because of domestic water
heating.
To ensure domestic hot water production, the
schedule timers must be used to disable space
heating/cooling. Refer to "Programming and

consulting the schedule timer" on page 25.

■ When using a room thermostat, domestic water
heating by compressor or by booster heater is NOT
possible as long as the room thermostat demands
cooling or heating.
In this case de-activate the room thermostat demand
by its schedule timer.
Refer to the operation manual of the room thermostat
for a detailed explanation how to de-activate space
heating/cooling by schedule timer.

4.3. Name and function of buttons and icons

16. BACKUP HEATER STEP ONE ( OR STEP TWO §

These icons indicate that the backup heater is operating on low
capacity (() or on high capacity (§). The backup heater
provides heating capacity in case of malfunction of the outdoor
unit.

33. DOMESTIC HOT WATER TEMPERATURE ADJUST BUTTONS

wbi and wbj

These buttons are used to adjust the current set point of the
domestic hot water temperature.
The buttons are not used when the domestic hot water tank is
not installed.

4.5. Description of the operation modes

Domestic water heating operation (w)

Only for [4-03]=0, 1, 2, or 3

In this mode, the indoor unit will heat up the domestic hot water tank
by heat pump when the space heating/space cooling operation has
reached its temperature set point or heat pump domestic water
heating has a higher demand request than space side (depends on
DIP switch setting).

INFORMATION

■ Refer to "Balance between space heating/cooling

demand and domestic hot water demand" on
page 24.

■ The domestic hot water water temperature set point
can only be set manually (refer to "Manual operation"

on page 8).

■ Any domestic water heating operation is impossible
when the domestic hot water tank is not installed.

■ When the
heating up by the solar kit option and not by the indoor
unit. Refer to installation manual of the EKSOLHW
solar kit.

w icon is blinking, the domestic hot water is

Powerful domestic water heating operation

Powerful domestic water heating operation is not applicable for
installations with restricted power supply condition mode.

4.6. Controller operations

Manual operation

Selecting powerful domestic water heating operation

Powerful domestic water heating operation is not applicable for
installations with restricted power supply condition mode.

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PPENDIX (for restricted power supply condition mode only)

4.7. Programming and consulting the schedule timer

All information mentioned in the manual is also applicable but
additional information is required to have correct operation for the
application with the restricted power supply mode activated.

Programming

Before you start any programming, read attentively the guidelines
mentioned in "Balance between space heating/cooling demand and

domestic hot water demand" on page 24 to understand the unit

operation.

Programming space heating or domestic water heating

CAUTION

For installations with restricted power supply, the indoor
unit allow operation of backup heater only, booster heater
only or outdoor unit only.

The domestic water heating schedule timer must
completely overlap the booster heater schedule timer. The
booster heater can not work if the domestic water heating
schedule timer is not active.

Programming space cooling, quiet mode, or booster heater
mode

CAUTION

For installations with restricted power supply, the indoor
unit allow operation of backup heater only, booster heater
only or outdoor unit only.

The domestic water heating schedule timer must
completely overlap the booster heater schedule timer. The
booster heater can not work if the domestic water heating
schedule timer is not active.

Example of schedule timers for installations with restricted
power supply condition mode and optional domestic hot water
tank

To optimize the comfort balance between space heating/cooling and
domestic hot water, the schedule timers must be used.

The following procedure shows step-by-step a possible space
heating/cooling and domestic hot water pattern. To ensure domestic
hot water production, the schedule timers must be used to disable
space heating/cooling. When space heating/cooling is disabled the
heat pump will switch automatically to domestic water heating. In this
case it is not required to program the domestic hot water or booster
heater schedule timer.

Example pattern:

7:00

0:00 1:00 2:00 3:00 4:00 5:00 6:00

AA

23:59

~

A Space heating/space cooling

In this example, the domestic hot water tank will be heated between
2:00 and 4:00.

INFORMATION

If using a room thermostat, domestic water heating by
compressor or by booster heater is NOT possible as long
as the room thermostat demands cooling or heating.

In this case de-activate the room thermostat demand by its
schedule timer.

Refer to the operation manual of the room thermostat for a
detailed explanation how to de-activate space heating/
cooling by schedule timer.

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PPENDIX (for restricted power supply condition mode only)

Programming space heating Programming space heating is carried out as follows:

INFORMATION

■ This example describes the procedure when no
program is scheduled yet.

■ Returning to previous steps in the programming
procedure without saving modified settings is done by
pressing the pr button.

1 Press the < button.

The actual mode is blinking.

2 Use the pi and pj buttons to select the heating mode.

3 Press the < button to confirm the selected mode.

The actual day is blinking.

4 Select the day you would like to consult or to program by means

of the pi and pj buttons.

The selected day is blinking.

5 Press the < button to confirm the selected day.

6 Press the < button for 5 seconds to enter the programming

mode.

7 Action number 1 will be displayed

8 Use the pi and pj buttons to set the correct action time

5 sec

5 sec

to 2:00.

9 Use the ba button to select x as action.

10 Use the < button to select action number 2.

11 Use the pi and pj buttons to set the action time to 4:00.

12 Use the ba button to select what the unit should do from 4:00

onwards.

■ For space heating:

- 9: set the temperature by means of the bi and
bj buttons.

- a: to select automatic temperature calculation.

13 Press the < button for 5 seconds to store the programmed

actions. When the program is stored, icon $ is displayed
on the remote controller.

14 Repeat this sequence for all days of the week.

15 Now the unit is programmed to stop space heating between 2:00

and 4:00. The unit will start space heating from 4:00.

5 sec

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INFORMATION

■ By pressing the pr button several times, you

return to previous steps in this procedure and
finally return to normal operation.

■ Other actions can also be programmed. See

"4.7. Programming and consulting the schedule
timer" on page 10.

5 sec

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PPENDIX (for restricted power supply condition mode only)

INFORMATION

When booster heater and domestic hot water schedule
timers are used, make sure they are enabled during the
period that space heating/cooling is disabled.

Example pattern:

7:00

0:00 1:00 2:00 3:00 4:00 5:00 6:00

A

A

23:59

B

C

A Space heating/space cooling
B Domestic water heating
C Booster heating

CAUTION

In case the disinfection function is required, the schedule
timer for domestic water heating and booster heating must
be used. If the domestic water heating and booster heater
are not stopped, than this disinfection can not start.

Disinfection example pattern (refer to "[2] Disinfection

~

function" on page 15).

Pattern 1:

Pattern 1 is an example schedule timer for domestic hot
water production.

Mon Tu e Wed Thu Fri Sat Sun

✓✓✓— ✓✓✓

7:00

0:00 1:00 2:00 3:00 4:00 5:00 6:00

A

A

23:59

~

B

C

A Space heating/space cooling
B Domestic water heating
C Booster heating

Pattern 2:

Pattern 2 is an example schedule timer for disinfection
function in combination with domestic hot water
production.

Mon Tu e Wed Thu Fri Sat Sun

——— ✓ ———

7:00

0:00 1:00 2:00 3:00 4:00 5:00 6:00

A

A

23:59

B

C

D

A Space heating/space cooling
B Domestic water heating
C Booster heating
D Disinfection function

~

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PPENDIX (for restricted power supply condition mode only)

5. FIELD SETTINGS

5.1. Procedure

Detailed description

[2] Disinfection function

All information mentioned in the manual is also applicable but
additional information is required to have correct operation for the
application with the restricted power supply mode activated.

CAUTION

Space heating/cooling always has priority over the
disinfection function.

The disinfection function is only possible when the unit is
not operating for space heating/cooling.

To allow the disinfection function, the schedule timers must
be used. Set the disinfection function settings so that it is
combined with the domestic hot water function that is
running during disabled space heating/cooling interval. It is
advised to run the disinfection function for minimum 1 hour.
Refer to the extra addendum of the operation manual for
an example pattern.

Refer to the operation manual for a detailed explanation
how to program the schedule timer.

7. TROUBLESHOOTING

For applications with restricted power supply condition mode, it is not
recommended to connect the system to a benefit kWh rate power
supply.

All items related to benefit kWh rate power supply should be
neglected.

CAUTION

If using a room thermostat, the disinfection function is not
possible as long as the room thermostat demands heating
or cooling. In this case, de-activate the room thermostat
demand by its schedule timer. Refer to the manual of the
room thermostat for a detailed explanation on how to
de-activate space heating/cooling by schedule timer.

[6] Scheduled storage and reheat domestic water heating

[6-03]~[6-08] are not applicable for installations with restricted power
supply condition mode.

6. MAINTENANCE

6.3. Standstill

NOTICE

■ During longer periods of standstill, e.g. during
summer with a heating only application, it is very
important NOT TO SWITCH OFF THE POWER
SUPPLY towards the unit.

Switching off the power supply stops the automatic
repetitive movement of the pump in order to prevent it
from getting jammed.

■ When the unit is turned off for some days during
winter, then this should be considered as a start-up at
low ambient temperature. Refer to the chapter "Start­up at low outdoor ambient temperatures" in the
installation manual to ensure that the unit operates
within its operation range as soon as possible.

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4PW62571-1 10.2010

Copyright 2010 Daikin