installation manual - daikin...the unit is the indoor part of the air to water erhq or erlq heat...

INSTALLATION MANUAL

EKHBH016BAEKHBX016BA

Indoor unit for air to water heat pump system

3

4

35

48

142 101

502

23

45

48 39

9636

1

1-1/4" FBSP

1-1/4" MBSP

895

922

830

469

260

B B

T T

2

≥350

300

500

≥

1

2x2x1x 1x 1x1 2 3 4 5

30°

90°

1

2

3

4

CONTENTS Page

Introduction........................................................................................1General information ................................................................................... 1Scope of this manual ................................................................................. 2Model identification .................................................................................... 2

Accessories .......................................................................................2Accessories supplied with the indoor unit .................................................. 2

Safety considerations ........................................................................3

Typical application examples .............................................................4Application 1 .............................................................................................. 4Application 2 .............................................................................................. 4Application 3 .............................................................................................. 5Application 4 .............................................................................................. 5Application 5 .............................................................................................. 6Application 6 .............................................................................................. 8

Overview of the indoor unit ................................................................9Opening the indoor unit.............................................................................. 9Main components..................................................................................... 10Switch box main components .................................................................. 11Functional diagram .................................................................................. 11

Installation of the indoor unit............................................................12Selecting an installation location.............................................................. 12Dimensions and service space ................................................................ 12Inspecting, handling and unpacking the unit ............................................ 12Mounting the indoor unit .......................................................................... 13Installation of the EKHBDP drain pan kit (only for EKHBX models)......... 13Refrigerant pipework................................................................................ 13Water pipework ........................................................................................ 13Charging water......................................................................................... 15Piping insulation....................................................................................... 16Field wiring............................................................................................... 16

Start-up and configuration ...............................................................21DIP switch settings overview.................................................................... 21Room thermostat installation configuration.............................................. 21Pump operation configuration .................................................................. 22Domestic hot water tank installation configuration................................... 23Initial start-up at low outdoor ambient temperatures................................ 23Pre-operation checks ............................................................................... 23Powering up the indoor unit ..................................................................... 23Setting the pump speed ........................................................................... 23Field settings............................................................................................ 24Field settings table ................................................................................... 33

Test run and final check...................................................................35Final check............................................................................................... 35Automatic test run .................................................................................... 35Test run operation (manual) ..................................................................... 35

Maintenance and service ................................................................35

Troubleshooting ...............................................................................36General guidelines ................................................................................... 36General symptoms................................................................................... 37Error codes .............................................................................................. 38

Technical specifications ...................................................................40General .................................................................................................... 40Electrical specifications............................................................................ 40

The English text is the original instruction. Other languages aretranslations of the original instructions.

INTRODUCTION

General information

Thank you for purchasing this indoor unit.

The unit is the indoor part of the air to water ERHQ or ERLQ heatpumps. These units are designed for wall mounted indoor installation.See "Selecting an installation location" on page 12. The units can becombined with Daikin fan coil units, floor heating applications, lowtemperature radiators, Daikin domestic water heating applicationsand solar kit for domestic hot water applications.

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 foradditional heating capacity during cold outdoor temperatures. Thebackup heater also serves as a backup in case of malfunctioning ofthe outdoor unit. The backup heater models are available for aheating capacity of 3, 6 and 9 kW, and – depending on the heatingcapacity – for three different power supply specifications.

EKHBH016BA***EKHBX016BA*** Indoor unit for air to water heat pump system Installation manual

READ THESE INSTRUCTIONS CAREFULLY BEFOREINSTALLATION. KEEP THIS MANUAL IN A HANDYPLACE FOR FUTURE REFERENCE.

IMPROPER INSTALLATION OR ATTACHMENT OFEQUIPMENT OR ACCESSORIES COULD RESULT INELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OROTHER DAMAGE TO THE EQUIPMENT. BE SURE ONLYTO USE ACCESSORIES MADE BY DAIKIN WHICH ARESPECIFICALLY DESIGNED FOR USE WITH THEEQUIPMENT AND HAVE THEM INSTALLED BY APROFESSIONAL.

ALL ACTIVITIES DESCRIBED IN THIS MANUAL SHALLBE CARRIED OUT BY A LICENSED TECHNICIAN.

BE SURE TO WEAR ADEQUATE PERSONEL PROTEC-TION EQUIPMENT (PROTECTION GLOVES, SAFETYGLASSES, ...) WHEN PERFORMING INSTALLATION,MAINTENANCE OR SERVICE TO THE UNIT.

IF UNSURE OF INSTALLATION PROCEDURES OR USE,ALWAYS CONTACT YOUR DAIKIN DEALER FORADVICE AND INFORMATION.

THE UNIT DESCRIBED IN THIS MANUAL IS DESIGNEDFOR INDOOR INSTALLATION ONLY AND FOR AMBIENTTEMPERATURES RANGING 4°C~35°C.

Indoor unit model Backup heater capacityBackup heater

nominal voltage

EKHB*016BA3V3 3 kW 1x 230 V

EKHB*016BA6V3 6 kW 1x 230 V

EKHB*016BA6WN 6 kW 3x 400 V

EKHB*016BA9WN 9 kW 3x 400 V

EKHB*016BA6T1 6 kW 3x 230 V

EKHB*016BA9T1 9 kW 3x 230 V

EKHBH/X016BAIndoor unit for air to water heat pump system4PW54187-1B

Installation manual

1

Domestic hot water tank (option)

An optional EKHW* domestic hot water tank with integrated 3 kWelectrical booster heater can be connected to the indoor unit. Thedomestic hot water tank is available in three sizes: 150, 200 and300 litre. Refer to the domestic hot water tank installation manual forfurther details.

Drain pan kit (option)

For heating/cooling versions (EKHBX), it is necessary to install theEKHBDP drain pan kit.For more information concerning the drain pan kit, refer to"Installation of the EKHBDP drain pan kit (only for EKHBX models)"on page 13.

Solar kit for domestic hot water tank (option)

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

Digital I/O PCB kit (option)

An optional EKRP1HB digital I/O PCB can be connected to theindoor unit and allows:

remote alarm output

heating/cooling ON/OFF output

bivalent operation (permission signal for the auxiliary boiler)

Refer to the operation manual of the indoor unit and to the installationmanual of the digital I/O PCB for more information.

Refer to the wiring diagram or connection diagram for connecting thisPCB to the unit.

Remote thermostat kit (option)

An optional room thermostat EKRTW, EKRTWA, or EKRTR can beconnected to the indoor unit. Refer to the installation manual of theroom thermostat for more information.

Possible options

Connection to a benefit kWh rate power supply

This equipment allows for connection to benefit kWh rate powersupply delivery systems. Full control of the unit will remain possibleonly in case the benefit kWh rate power supply is of the type thatpower supply is not interrupted. Refer to "Connection to a benefitkWh rate power supply" on page 19 for more details.

Scope of this manual

This installation manual describes the procedures for handling,installing and connecting all EKHBH/X indoor unit models.

Model identification

Indoor unit

Drain pan kit (optional)

ACCESSORIES

Accessories supplied with the indoor unit

See figure 1

NOTE An ERLQ0*BA outdoor unit can only beconnected to an EKHBH/X016BA indoor unit(bottom plate heater at outdoor unit has to becontrolled by indoor unit).

An ERHQ0*BA outdoor unit can be connected toan EKHBH/X016BA indoor unit or to anEKHBH/X016AA/AB indoor unit (if a bottom plateheater kit is required, see "Possible options" onpage 2).

1 Heat pump capacity

2 Required heating capacity (site dependent)

3 Additional heating capacity provided by the backup heater

4 Equilibriumtemperature (can be set through the user interface, refer to "Field settings" on page 24)

TA Ambient (outdoor) temperature

PH Heating capacity

EKBPHT16Y* EKBPHTH16A

EKHBH/X016AA/AB Possible Not allowed

EKHBH/X016BA Possible Possible

TA

43

1

2

PH

NOTE Installation of the ERHQ or ERLQ heat pump outdoorunit is described in the outdoor unit installationmanual.

Operation of the indoor unit is described in the indoorunit operation manual.

EK HB X 016 AA 3 V3

Backup heater nominal voltage: V3 = 1P, 230 VWN = 3P, 400 VT1 = 3P, 230 V

Backup heater capacity (kW)

Series

Indication of heating/cooling capacity (kW)(a)

(a) For exact values, refer to "Technical specifications" on page 40.

X = heating and cooling,H = heating only

Hydro box

European kit

EK HB DP 150

Drain pan

Hydro box

European kit

1 Installation manual

2 Operation manual

3 Shut-off valve

4 Wiring diagram sticker (inside indoor unit cover)

5 Indoor unit cover fixing screw

Installation manual

2EKHBH/X016BA

Indoor unit for air to water heat pump system4PW54187-1B

SAFETY CONSIDERATIONS

The precautions listed here are divided into the following four types.Both cover very important topics, so be sure to follow them carefully.

Danger Before touching electric terminal parts, turn off power switch.

When service panels are removed, live parts can be easilytouched by accident.

Never leave the unit unattended during installation or servicingwhen the service panel is removed.

Do not touch water pipes during and immediately after operationas the pipes may be hot. Your hand may suffer burns. To avoidinjury, give the piping time to return to normal temperature or besure to wear proper gloves.

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

Before touching electrical parts, turn off all applicable powersupply.

Warning Tear apart and throw away plastic packaging bags so that

children will not play with them.

Children playing with plastic bags face danger of death bysuffocation.

Safely dispose of packing materials. Packing materials, such asnails and other metal or wooden parts, may cause stabs or otherinjuries.

Never directly touch any accidental leaking refrigerant. Thiscould result in severe wounds caused by frostbite.

Do not touch the refrigerant pipes during and immediately afteroperation as the refrigerant pipes may be hot or cold, dependingon the condition of the refrigerant flowing through the refrigerantpiping, compressor, and other refrigerant cycle parts. Yourhands may suffer burns or frostbite if you touch the refrigerantpipes. To avoid injury, give the pipes time to return to normaltemperature or, if you must touch them, be sure to wear propergloves.

Do not touch the internal parts (pump, backup heater, etc.)during and immediately after operation.

Your hands may suffer burns if you touch the internal parts. Toavoid injury, give the internal parts time to return to normaltemperature or, if you must touch them, be sure to wear propergloves.

Caution Earth the unit.

Earthing resistance should be according to local and nationalregulations.

Do not connect the earth wire to gas or water pipes,lightning conductor or telephone earth wire.

Incomplete earthing may cause electric shocks.

Gas pipe.Ignition or explosion may occur if the gas leaks.

Water pipe.Hard vinyl tubes are not effective earths.

Lightning conductor or telephone earth wire.Electric potential may rise abnormally if struck by a lightningbolt.

Install the power wire at least 1 meter away from televisions orradios to prevent image interference or noise.

(Depending on the radio waves, a distance of 1 meter may notbe sufficient to eliminate the noise.)

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

Do not install the unit in places such as the following:

Where there is mist of mineral oil, oil spray or vapour.Plastic parts may deteriorate, and cause them to fall out orwater to leak.

Where corrosive gas, such as sulphurous acid gas, isproduced.Corrosion of copper pipes or soldered parts may cause therefrigerant to leak.

Where there is machinery which emits electromagneticwaves.Electromagnetic waves may disturb the control system, andcause malfunction of the equipment.

Where flammable gases may leak, where carbon fibre orignitable dust is suspended in the air or where volatileflammables, such as thinner or gasoline, are handled.Such gases may cause a fire.

Where the air contains high levels of salt.

Where voltage fluctuates a lot, such as that in factories.

In vehicles or vessels.

Where acidic or alkaline vapour is present.

Meanings of DANGER, WARNING, CAUTION and NOTE symbols.

DANGER

Indicates an imminently hazardous situation which, if notavoided, will result in death or serious injury.

WARNING

Indicates a potentially hazardous situation which, if notavoided, could result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation which, if notavoided, may result in minor or moderate injury. It may alsobe used to alert against unsafe practices.

NOTE

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


Installation manual

3

TYPICAL APPLICATION EXAMPLES

The application examples given below are for illustration purposesonly.

Application 1

Space heating only application with the room thermostat connectedto the indoor unit.

Pump operation and space heating

When the room thermostat (T) is connected to the indoor unit, thepump (4) will operate when there is a heating request from the roomthermostat, and the outdoor unit will start operating to achieve thetarget leaving water temperature as set on the user interface.

When the room temperature is above the thermostat set point, theoutdoor unit and pump will stop operating.

Application 2

Space heating only application without room thermostat connected tothe indoor unit. The temperature in each room is controlled by a valveon each water circuit. Domestic hot water is provided through thedomestic hot water tank which is connected to the indoor unit.

Pump operation

With no thermostat connected to the indoor unit (2), the pump (4) canbe configured to operate either as long as the indoor unit is on, oruntil the required water temperature is reached.

Space heating

The outdoor unit (1) will operate to achieve the target leaving watertemperature as set on the user interface.

1 Outdoor unit 6 Collector (field supply)

2 Indoor unit 7 Shut-off valve

3 Heat exchanger FHL1..3 Floor heating loop

4 Pump T Room thermostat (optional)

5 Shut-off valve

Make sure to connect the thermostat wires to the correctterminals (see "Connection of the thermostat cable" onpage 18) and to configure the DIP switch toggle switchescorrectly (see "Room thermostat installation configuration"on page 21).

FHL1FHL2

FHL3

T

5 64321

7

1 Outdoor unit 10 Domestic hot water tank (optional)

2 Indoor unit

3 Heat exchanger 11 Booster heater

4 Pump 12 Heat exchanger coil

5 Shut-off valve FHL1..3 Floor heating loop

6 Collector (field supply) T1..3 Individual room thermostat (optional)

7 Shut-off valve

8 Motorised 3-way valve (delivered with domestic hot water tank)

M1..3 Individual motorised valve to control loop FHL1 (field supply)

9 By-pass valve (field supply)

NOTE Details on pump configuration can be found under"Pump operation configuration" on page 22.

NOTE When circulation in each space heating loop (FHL1..3)is controlled by remotely controlled valves (M1..3), it isimportant to provide a by-pass valve (9) to avoid theflow switch safety device from being activated.

The by-pass valve should be selected as such that atall time the minimum water flow as mentioned under"Water pipework" on page 13 is guaranteed.

It is recommended to select a pressure differencecontrolled by-pass valve.

M

FHL1FHL2

FHL3

M1

T1

M2

T2

M3

T3

54321

12

10

117

8 6 9

Installation manual

4EKHBH/X016BA


Domestic water heating

When domestic water heating mode is enabled (either manually bythe user, or automatically through a schedule timer) the targetdomestic hot water temperature will be achieved by a combination ofthe heat exchanger coil and the electrical booster heater.

When the domestic hot water temperature is below the userconfigured set point, the 3-way valve will be activated to heat thedomestic hot water by means of the heat pump. In case of largedomestic hot water demand or a high domestic hot watertemperature setting, the booster heater (11) can provide auxiliaryheating.

Application 3

Space heating and cooling application with the room thermostat setfor heating/cooling connected to the indoor unit. Heating is providedthrough floor heating loops and fan coil units. Cooling is providedthrough the fan coil units only.Domestic hot water is provided through the domestic hot water tankwhich is connected to the indoor unit.

Pump operation and space heating and cooling

According to the season, the customer will select heating or coolingon the room thermostat (T). This selection is not possible byoperating the user interface.

When space heating/cooling is requested by the room thermostat(T), the pump will start operating and the indoor unit (2) will switch to"heating mode"/"cooling mode". The outdoor unit (1) will startoperating to achieve the target leaving hot/cold water temperature.

In case of cooling mode, the 2-way valve (13) will close as to preventcold water running through the floor heating loops (FHL).

The ON/OFF setting of the heating/cooling operation is done by theroom thermostat and cannot be done by the user interface on theindoor unit.

Domestic water heating

Domestic water heating is as described under "Application 2" onpage 4.

Application 4

Space heating and cooling application without the room thermostatconnected to the indoor unit, but with the heating only roomthermostat (set heating only) controlling the floor heating and theheating/cooling thermostat (set heating/cooling) controlling the fancoil units. Heating is provided through floor heating loops and fan coilunits. Cooling is provided through the fan coil units only.

NOTE The indoor unit can be configured so that at lowoutdoor temperatures the domestic hot water isexclusively heated by the booster heater. This assuresthat the full capacity of the heat pump is available forspace heating.

Details on domestic hot water tank configuration forlow outdoor temperatures can be found under "Fieldsettings" on page 24, field settings [5-02] to [5-04].

1 Outdoor unit 10 Domestic hot water tank (optional)2 Indoor unit

3 Heat exchanger 11 Booster heater

4 Pump 12 Heat exchanger coil

5 Shut-off valve 13 Motorised 2-way valve (field supply)6 Collector (field supply)

7 Shut-off valve FCU1..3 Fan coil unit (optional)

8 Motorised 3-way valve (delivered with domestic hot water tank)

FHL1..3 Floor heating loop

T Room thermostat with heating/cooling switch (optional)

M M

FHL1

T

FHL2FHL3

FCU1FCU2

FCU354321

6

7

8 13

10

11 12

NOTE Make sure to connect the thermostat wires to thecorrect terminals (see "Connection of the thermostatcable" on page 18) and to configure the DIP switchtoggle switches correctly (see "Room thermostatinstallation configuration" on page 21).

NOTE Wiring of the 2-way valve (13) is different for a NC(normal closed) valve and a NO (normal open) valve!Make sure to connect to the correct terminal numbersas detailed on the wiring diagram.

M

FCU1FCU2

FCU3

T4T5

T6

FHL1FHL2

FHL3

T

54321

6

7

13

M

14 6

9


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5

Pump operation

With no thermostat connected to the indoor unit (2), the pump (4) canbe configured to operate either as long as the indoor unit is on, oruntil the required water temperature is reached.

Space heating and cooling

According to the season, the customer will select heating or coolingthrough the user interface on the indoor unit.

The outdoor unit (1) will operate in heating mode or cooling mode toachieve the target leaving water temperature.

With the unit in heating mode, the 2-way valve (13) is open. Hot wateris provided to both the fan coil units and the floor heating loops.

With the unit in cooling mode, the 2-way valve (13) is closed toprevent cold water running through the floor heating loops (FHL).

The ON/OFF setting of the heating/cooling operation is done by theuser interface on the indoor unit.

Application 5

Space heating with an auxiliary boiler (alternating operation)

Space heating application by either the Daikin indoor unit or by anauxiliary boiler connected in the system. The decision whether eitherthe EKHB* indoor unit or the boiler will operate can be achieved byan auxiliary contact or an EKHB* indoor controlled contact.

The auxiliary contact can e.g. be an outdoor temperature thermostat,an electricity tariff contact, a manually operated contact, etc. See"Field wiring configuration A" on page 7.

The EKHB* indoor unit controlled contact (also called 'permissionsignal for the auxiliary boiler") is determined by the outdoortemperature (thermistor located at the outdoor unit). See "Field wiringconfiguration B" on page 7.

Bivalent operation is only possible for space heating operation, notfor the domestic water heating operation. Domestic hot water in suchan application is always provided by the domestic hot water tankwhich is connected to the Daikin indoor unit.

The auxiliary boiler must be integrated in the piping work and in thefield wiring according to the illustrations below.

1 Outdoor unit 14 Motorised 2-way valve for activation of the room thermostat (field supply)2 Indoor unit

3 Heat exchanger

4 Pump FCU1..3 Fan coil unit with thermostat (optional)

5 Shut-off valve

6 Collector (field supply) FHL1..3 Floor heating loop

7 Shut-off valve T Heating only room thermostat (optional)

9 By-pass valve (field supply)

13 Motorised 2-way valve to shut off the floor heating loops during cooling operation (field supply)

T4..6 Individual room thermostat for fan coil heated/cooled room (optional)

NOTE Details on pump configuration can be found under"Pump operation configuration" on page 22.

When closing several loops in the system by remotelycontrolled valves, it might be required to install a by-passvalve (9) to avoid the flow switch safety device from beingactivated. See also "Application 2" on page 4.

Wiring of the 2-way valve (13) is different for a NC (normalclosed) valve and a NO (normal open) valve! Make sure toconnect to the correct terminal numbers as detailed on thewiring diagram.

CAUTION

Be sure that the boiler and the integration of the boilerin the system is in accordance with relevant Europeanand national regulations.

Daikin can not be put responsible for incorrect orunsafe situations in the boiler system.

1 Outdoor unit 11 Heat exchanger coil

2 Indoor unit 12 Domestic hot water tank (optional)

3 Heat exchanger

4 Pump 15 Boiler (field supply)

5 Shut-off valve 16 Aquastat valve (field supply)

6 Collector (field supply)

7 Shut-off valve 17 Shut-off valve (field supply)

8 Motorised 3-way valve (delivered with the domestic hot water tank)

18 Non-return valve (field supply)

FHL1...3 Floor heating loop (field supply)10 Booster heater

M

FHL1FHL2

FHL3

54321 8 18

16 17157

617

12

10 11

Installation manual

6EKHBH/X016BA


Field wiring configuration A

Field wiring configuration B

Operation

Configuration A

When the room thermostat requests heating, either the EKHB*unit or the boiler starts operating, depending on the position ofthe auxiliary contact (A).

Configuration B

When the room thermostat requests heating, either the EKHB*unit or the boiler starts operating, depending on the outdoortemperature (status of "permission signal for the auxiliaryboiler").

When the permission is given towards the boiler, the spaceheating operation by the EKHB* unit will be automaticallyswitched off.

For more details see field setting [C-02~C-04].

Boilerthermostat input

Boiler thermostat input

A Auxiliary contact (normal closed)

H Heating demand room thermostat (optional)

K1A Auxiliary relay for activation of EKHB* unit (field supply)

K2A Auxiliary relay for activation of boiler (field supply)

Boilerthermostat input


C Cooling demand room thermostat (optional)

H Heating demand room thermostat (optional)

Com Common room thermostat (optional)

K1A Auxiliary relay for activation of bolier unit (field supply)

KCR Permission signal for the auxiliary boiler

1 2 3 4

K1A

K1A K2A

X Y

K2A


L

N

EKHB*/auto / Boiler

A

EKHB* X2M

H Com

X1 X2

X Y

K1A

KCR

EKRP1HB*


1 2 3 4

H C Com

K1A

EKHB* X2M

EKRTR*

1 2 3 4

C Com H

K1A

EKHB* X2M

EKRTW*

NOTE Configuration AMake sure that auxiliary contact (A) has sufficientdifferential or time delay so as to avoid frequentchangeover between the EKHB* unit and theboiler. If the auxiliary contact (A) is an outdoortemperature thermostat, make sure to install thethermostat in the shade, so that it is notinfluenced or turned ON/OFF by the sun.

Configuration BMake sure that the bivalent hysteresis [C-04] hassufficient differential to avoid frequent changeoverbetween the EKHB* unit and the boiler. As theoutdoor temperature is measured via the outdoorunit, air thermistor make sure to install theoutdoor unit in the shade, so that it is notinfluenced by the sun.

Frequent switching may cause corrosion of theboiler in an early stage. Contact the manufacturerof the boiler.

During heating operation of the EKHB* unit, theunit will operate so as to achieve the targetleaving water temperature as set on the userinterface. When weather dependent operation isactive, the water temperature is determinedautomatically depending on the outdoortemperature.

During heating operation of the boiler, the boilerwill operate so as to achieve the target leavingwater temperature as set on the boiler controller.

Never set the target leaving water temperature setpoint on the boiler controller above 55°C.

Make sure to only have 1 expansion vessel in thewater circuit. An expansion vessel is alreadypremounted in the Daikin indoor unit.

NOTE Make sure to configure the DIP switch SS2-3 on thePCB of the EKHB* switchbox correctly. Refer to "Roomthermostat installation configuration" on page 21.

For configuration B: Make sure to configure the fieldsettings [C-02, C-03 and C-04] correctly. Refer to"Bivalent operation" on page 30.

CAUTION

Make sure that return water to the EKHB* heat exchangernever exceeds 55°C.

For this reason, never put the target leaving watertemperature set point on the boiler controller above 55°Cand install an aquastat(a) valve in the return water flow ofthe EKHB* unit.

Make sure that the non-return valves (field supply) arecorrectly installed in the system.

Make sure that the room thermostat (th) is not frequentlyturned ON/OFF.

Daikin shall not be held liable for any damage resultingfrom failure to observe this rule.

(a) The aquastat valve must be set for 55°C and must operate to close the return water flow to the unit when the measured temperature exceeds 55°C. When the temperature drops to a lower level, the aquastat valve must operate to open the return water flow to the EKHB* unit again.

Manual permission towards the EKHB* unit on the boiler.

In case only the EKHB* unit should operate in spaceheating mode, disable the bivalent operation via setting[C-02].

In case only the boiler should operate in space heatingmode, increase the bivalent ON temperature [C-03] to25°C.


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7

Application 6

Space heating with room thermostat application through floor heatingloops and fan coil units. The floor heating loops and fan coil unitsrequire different operating water temperatures.

The floor heating loops require a lower water temperature in heatingmode compared to fan coil units. To achive these two set points, amixing station is used to adapt the water temperature according torequirements of the floor heating loops. The fan coil units are directlyconnected to the indoor unit water circuit and the floor heating loopsafter the mixing station. The control of this mixing station is not doneby the indoor unit.

The operation and configuration of the field water circuit is theresponsibility of the installer.

Daikin only offers a dual set point control function. By this functiontwo set points can be generated. Depending on the required watertemperature (floor heating loops and/or fan coil units are required)first set point or second set point can be activated.

Pump operation and space heating

When the room thermostat for the floor heating loop (T1) and the fancoil units (T2) are connected to the indoor unit, the pump (4) willoperate when there is a request for heating from T1 and/or T2. Theoutdoor unit will start operating to achieve the target leaving watertemperature. The target leaving water temperature depends on whichroom thermostat is requesting heating.

When the room temperature of both zones is above the thermostatset point, the outdoor unit and pump will stop operating.

1 Outdoor unit 8 Shut-off valve

2 Indoor unit 9 Mixing station (field supply)

3 Heat exchanger T1 Room thermostat for zone A (optional)

4 Pump

5 Shut-off valve T2 Room thermostat for zone B (optional)

6 Collector zone A (field supply) FCU1..3 Fan coil unit (optional)

7 Collector zone B (field supply)

FHL1...3 Floor heating loop (field supply)

The advantage of the dual set point control is that the heatpump will/can operate at the lowest required leaving watertemperature when only floor heating is required. Higherleaving water temperatures are only required in case fancoil units are operating.This results in a better performance of the heat pump.

FHL1FHL2

FHL3

T1

T2 FCU1FCU2

FCU354321

8 9

7

6

B

A

Set point Field setting Thermo status

Zone A First UI ON OFF ON OFF

Zone B Second [7-03] OFF ON ON OFF

Resulting water temperature UI [7-03] [7-03] —

Result pump operation ON ON ON OFF

NOTE Make sure to connect the thermostat wires to thecorrect terminals (see "Overview of the indoorunit" on page 9).

Make sure to configure the field settings [7-02],[7-03] and [7-04] correctly. Refer to "Dual set pointcontrol" on page 28.

Make sure to configure the DIP switch SS2-3 onthe PCB of the EKHBH switch box correctly. Referto "Room thermostat installation configuration" onpage 21.

NOTE The request signals for space heating can beimplemented in two different ways (installerchoice).- Thermo ON/OFF signal from room thermostat- Status signal (active/not active) from the

mixing station

It is the installers responsibility to make sure nounwanted situations can occur (e.g. too highwater temperatures towards floor heating loops,etc.)

Daikin does not offer any type of mixing station.Dual set point control only provides the possibilityto use two set points.

When only zone A request heating, zone B will befed with water at a temperature equal to the firstset point.This can lead to unwanted heating of zone B.

When only zone B request heating, the mixingstation will be fed with water at a temperatureequal to the second set point.Depending on the control of the mixing station,the floor heating loop can still receive water at atemperature equal to set point of the mixingstation.

Be aware that the actual water temperature through thefloor heating loops depends on the control and setting ofthe mixing station.

Installation manual

8EKHBH/X016BA


OVERVIEW OF THE INDOOR UNIT

Opening the indoor unit

The front flap on the indoor unit cover gives access to themanometer and user interface.

The indoor unit cover can be removed by removing the 2 bottomscrews and unhitching the cover.

To gain access to the switch box components – e.g. to connectthe field wiring – the switch box service panel can be removed.Thereto, loosen the front screws and unhitch the switch boxservice panel.

Make sure to fix the cover with the screws when installingthe cover (screws are delivered as accessory).

Parts inside the unit can be hot.

WARNING

Switch off all power supply – i.e. outdoor unit powersupply and backup heater and domestic hot watertank power supply (if applicable) – before removingthe switch box service panel.

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

Do not touch the internal parts (pump, backup heater,etc.) during and immediately after operation.

Your hands may suffer burns if you touch the internalparts. To avoid injury, give the internal parts time toreturn to normal temperature or, if you must touchthem, be sure to wear proper gloves.

DANGER

Do not touch water pipes during and immediately afteroperation as the pipes may be hot. Your hand maysuffer burns. To avoid injury, give the piping time toreturn to normal temperature or be sure to wearproper gloves.

When service panels are removed, live parts can beeasily touched by accident.Never leave the unit unattended during installation orservicing when the service panel is removed.

1

2

3

1 33


Installation manual

9

Main components

1. Air purge valveRemaining air in the water circuit will be automatically removedvia the air purge valve.

2. Backup heaterThe backup heater consists of an electrical heating element inthe backup heater vessel that will provide additional heatingcapacity to the water circuit if the heating capacity of the outdoorunit is insufficient due to low outdoor temperatures.

3. Temperature sensorsFour temperature sensors determine the water and refrigeranttemperature at various points in the water circuit.

4. Switch boxThe switch box contains the main electronic and electrical partsof the indoor unit.

5. Heat exchanger

6. Expansion vessel (10 l)

7. User interfaceThe user interface allows the installer and user to set up, useand maintain the unit.

8. Refrigerant liquid connection

9. Refrigerant gas connection

10. Shut-off valves (accessory)The shut-off valves on the water inlet connection and wateroutlet connection allow isolation of the indoor unit water circuitside from the residential water circuit side. This facilitatesdraining and filter replacement of the indoor unit.

11. Water inlet connection

12. Water outlet connection

13. Drain and fill valves

14. Water filter

The water filter removes dirt from the water to prevent damageto the pump or blockage of the evaporator. The water filter mustbe cleaned on a regular base. See "Maintenance and service"on page 35.

15. ManometerThe manometer allows readout of the water pressure in thewater circuit.

16. Flow switchThe flow switch checks the flow in the water circuit and protectsthe heat exchanger against freezing and the pump againstdamage.

17. PumpThe pump circulates the water in the water circuit.

18. Backup heater thermal protectorThe backup heater is equipped with a thermal protector. Thethermal protector is activated when the temperature becomestoo high.

19. Backup heater thermal fuseThe backup heater is equipped with a thermal fuse. The thermalfuse is blown when the temperature becomes too high (higherthan the backup heater thermal protector temperature).

20. Pressure relief valveThe pressure relief valve prevents excessive water pressure inthe water circuit by opening at 3 bar and discharging somewater.

21. Pressure relief valve hoseThe actual outlet of the pressure relief valve. Make sure toprovide a proper drain.

1

3

1011

8913

12

10

2

3

4

5

3

715

6

13

14

16

21

3

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19

20

18

Installation manual

10EKHBH/X016BA


Switch box main components

1. Backup heater contactors K1M, K2M, K5M and K6M.

2. Main PCBThe main PCB (Printed Circuit Board) controls the functioning ofthe unit.

3. Booster heater contactor K3M (only for installations withdomestic hot water tank)

4. Booster heater circuit breaker F2B (only for installations withdomestic hot water tank)The circuit breaker protects the booster heater in the domestichot water tank against overload or short circuit.

5. Backup heater circuit breaker F1B, F3BThe circuit breaker protects the backup heater electrical circuitagainst overload or short circuit.

6. Terminal blocksThe terminal blocks allow easy connection of field wiring.

7. Cable tie mountingsThe cable tie mountings allow to fix the field wiring with cableties to the switch box to ensure strain relief.

8. Terminal blocks X3M, X4M (only for installations with domestichot water tank)

9. PCB fuse FU1

10. DIP switch SS2The DIP switch SS2 provides 4 toggle switches to configurecertain installation parameters. See "DIP switch settingsoverview" on page 21.

11. X13A socketThe X13A socket receives the K3M connector (only forinstallations with domestic hot water tank).

12. X9A socketThe X9A socket receives the thermistor connector (only forinstallations with domestic hot water tank).

13. Pump fuse FU2 (in line fuse)

14. Pump relay K4M

15. Transformer TR1

16. A4PDigital I/O PCB (only for installations with solar kit or digital I/OPCB kit).

Functional diagram

K4M

TR1

K1M K2M K5M

K3M K6M

F2B F3B F1B

X1M X3M

X2M X4M

A1P

A4P

15

12

11

10

9

16

6

6

1

23

1

5

13

8

7

8

X9A

X13A

SS2

FU2

FU1

45

14

NOTE The electrical wiring diagram can be found on theinside of the switch box cover.

1 Outdoor unit 10 Shut-off valve water outlet with drain valve (field installation)2 Indoor unit

3 Expansion vessel 11 Shut-off valve water inlet with drain valve (field installation)

4 Manometer

5 Air purge valve 12 Filter

6 Pressure relief valve 13 Heat exchanger

7 Backup heater R1TR2TR3TR4T

Temperature sensors8 Pump

9 Flow switch

R4T

H2O

t >

R3Tt >

R2Tt >

R1Tt >

9

10

11

32 4 8

12131

5 6 7


Installation manual

11

INSTALLATION OF THE INDOOR UNIT

Selecting an installation location

The unit is to be wall mounted in an indoor location that meets thefollowing requirements:

The installation location is frost-free.

The space around the unit is adequate for servicing. (Seefigure 2).

The space around the unit allows for sufficient air circulation.

There is a provision for condensate drain (only for EKHBXmodels with drain pan kit EKHBDP) and pressure relief valveblow-off.

The installation surface is a flat and vertical non-combustiblewall, capable of supporting the operation weight of the unit (see"Technical specifications" on page 40).

There is no danger of fire due to leakage of inflammable gas.

All piping lengths and distances have been taken intoconsideration.

During normal operation the hydrobox unit will produce soundwhich could be observed as noise. The sound origin can bewater pump operation and/or contactor activation. Therefore it isadvisable to install the hydrobox unit on a firm wall and not in norclose to a sound sensitive environment (e.g. bedroom).

Do not install the unit in places with high humidity (e.g.bathroom).

Select piping diameter in relation to required water flow andavailable ESP of pump.

The equipment is not intended for use in a potentially explosiveatmosphere.

Do not install the unit in places often used as work place.In case of construction works (e.g. grinding works) where a lot ofdust is created, the unit must be covered.

Take care that in the event of a water leak, water can not causeany damage to the installation space and surroundings.

Do not place any objects or equipment on top of the unit.

Be sure that sufficient precautions are taken, in accordance withrelevant local and national regulations, in case of refrigerantleakage.

Dimensions and service space

Unit of measurement: mm

Dimensions of the unit, see figure 3

Required service space, see figure 2

Inspecting, handling and unpacking the unit

The indoor unit is packed in a cardboard box, fixed by straps ona wooden pallet.

At delivery, the unit must be checked and any damage must bereported immediately to the carrier claims agent.

Check if all indoor unit accessories (see "Accessories" onpage 2) are enclosed.

Bring the unit as close as possible to its final installation positionin its original package in order to prevent damage duringtransport.

The indoor unit weighs approximately 48 kg and should be liftedby two persons using the two lifting bars provided.

Requirement Value

Maximum allowable refrigerant piping length between outdoor unit and indoor unit 75 m

Minimum required refrigerant piping length between outdoor unit and indoor unit 3 m(a)

(a) When <5 m, recharging of the outdoor unit (only for V3 model) is required. Refer to the installation manual of the outdoor unit.

Maximum allowable height difference between outdoor unit and indoor unit 30 m

Maximum allowable distance between the 3-way valve and the indoor unit (only for installations with domestic hot water tank).

3 m

Maximum allowable distance between the domestic hot water tank and the indoor unit (only for installations with domestic hot water tank). The thermistor cable supplied with the domestic hot water tank is 12 m in length.

10 m

CAUTION

If the installation is equipped with a domestic hot watertank (optional), please refer to the domestic hot water tankinstallation manual.

1 Flexible drain hose 5 Refrigerant gas connection

2 Water outlet connection

3 Water inlet connection FBSP Female British Standard Pipe

4 Refrigerant liquid connection

MBSP Male British Standard Pipe

CAUTION

Do not grasp the switch box or piping to lift the unit! Twolifting bars are provided to lift the unit.

Installation manual

12EKHBH/X016BA


Mounting the indoor unit

1 Put the installation pattern (see packing) on the wall and markthe fixation positions (2 on top ( T) and 2 at the bottom ( B)).

Make sure that the marks (2 by 2) are completely level and thedimensions of the marks are corresponding according tofigure 4.When the unit is not installed level, air might get trapped in thewater circuit resulting in malfunctioning of the unit.Pay special attention to this when installing an EKHBX model toprevent overflow of the drain pan.

2 Drill 4 holes and install 4 plugs (suitable for M10).

3 Put the screws in top plugs and hang the indoor unit on the topscrews.

4 Put the screws in bottom plugs and fix the screws firmly.

Installation of the EKHBDP drain pan kit (only for EKHBX models)

For heating/cooling models, it is necessary to install the drain pan kit(see "Accessories" on page 2).

During cooling operation, water vapour (humidity) in the air mightcondense to liquid and collect on the cold refrigerant and water pipes.This water is collected in the drain pan, which must be connected to adrain.

For installation instructions, refer to the instruction sheet deliveredwith the drain pan kit.

Refrigerant pipework

For all guidelines, instructions and specifications regardingrefrigerant pipework between the indoor unit and the outdoor unit,please refer to the outdoor unit installation manual.

The location of the gas pipe and liquid pipe on the indoor unit isshown under "Main components" on page 10.

Water pipework

Checking the water circuit

The units are equipped with a water inlet and water outlet forconnection to a water circuit. This circuit must be provided by alicensed technician and must comply with all relevant European andnational regulations.

CAUTION

The weight of the indoor unit is approximately 48 kg. Twopersons are required to mount the unit.

4

21 3

1

CAUTION

Make sure to position the pressure relief valve hose end inthe drain pan. Failure to do so might lead to water cominginto contact with electrical parts, resulting in electricalshocks or short-circuit of the electrical system.

Refrigerant piping specifications Indoor unit Outdoor unit

Gas pipe connection 15.9 mm (5/8 inch) 15.9 mm (5/8 inch)

Liquid pipe connection 9.5 mm (3/8 inch) 9.5 mm (3/8 inch)

When connecting the refrigerant pipes, always use twowrenches/spanners for tightening or loosening nuts!Failure to do so can result in damaged piping connectionsand leaks.

NOTE The unit is only to be used in a closed water system.Application in an open water circuit can lead toexcessive corrosion of the water piping.


Installation manual

13

Checking the water volume and expansion vesselpre-pressure

The unit is equipped with an expansion vessel of 10 litre which has adefault pre-pressure of 1 bar.

To assure proper operation of the unit, the pre-pressure of theexpansion vessel might need to be adjusted and the minimum andmaximum water volume must be checked.

1 Check that the total water volume in the installation, excludingthe internal water volume of the indoor unit, is 20 l minimum.Refer to "Technical specifications" on page 40 to know theinternal water volume of the indoor unit.

2 Using the table below, determine if the expansion vessel pre-pressure requires adjustment.

3 Using the table and instructions below, determine if the totalwater volume in the installation is below the maximum allowedwater volume.

NOTE Before continuing the installation of the unit, check thefollowing points:

The maximum water pressure = 3 bar + staticpressure of pump.

The maximum water temperature is 65°C (safetydevice setting).

Two shut-off valves are delivered with the unit. Tofacilitate service and maintenance, install one atthe water inlet and one at the water outlet of theindoor unit. Mind position of the shut-off valves.Orientation of the integrated drain and fill valves isimportant for servicing. See figure 3.

Drain taps must be provided at all low points ofthe system to permit complete drainage of thecircuit during maintenance.Two drain valves integrated in the shut-off valvesare provided to drain the water from the indoorunit water system.

Make sure to provide a proper drain for thepressure relief valve to avoid any water cominginto contact with electrical parts.

Air vents must be provided at all high points of thesystem. The vents should be located at pointswhich are easily accessible for servicing. Anautomatic air purge is provided inside the indoorunit. Check that this air purge valve is not tightenedtoo much so that automatic release of air in thewater circuit remains possible.

Take care that the components installed in thefield piping can withstand the water pressure andwater temperature.

Always use materials which are compatible withwater used in the system and with the materialsused on the indoor unit.

Select piping diameter in relation to requiredwater flow and available ESP of the pump.

The minimum required water flow for the indoorunit operation is 16 l/min. When the water flow islower than this minimum value, flow error 7H willbe displayed and the operation of the indoor unitwill be stopped.

In most applications this minimum water volume will have asatisfying result.

In critical processes or in rooms with a high heat loadthough, extra water volume might be required.

NOTE When circulation in each space heating loop iscontrolled by remotely controlled valves, it is importantthat this minimum water volume is kept even if all thevalves are closed.

Example

Installation height difference(a)

(a) Installation height difference: height difference (m) between the highest point of the water circuit and the indoor unit. If the indoor unit is located at the highest point of the installation, the installation height is considered 0 m.

Water volume

≤280 l >280 l

≤7 mNo pre-pressure adjustment required.

Actions required:• pre-pressure must be

decreased, calculate according to "Calculating the pre-pressure of the expansion vessel"

• check if the water volume is lower than maximum allowed water volume (use graph below)

>7 m

Actions required:• pre-pressure must be

increased, calculate according to "Calculating the pre-pressure of the expansion vessel"

• check if the water volume is lower than maximum allowed water volume (use graph below)

Expansion vessel of the unit too small for the installation.

FHL1FHL2

FHL3

M1

T1

M2

T2

M3

T3

54321

7

6 8

1 Outdoor unit 8 By-pass valve (field supply)

2 Indoor unit

3 Heat exchanger FHL1..3 Floor heating loop (field supply)

4 Pump

5 Shut-off valve T1..3 Individual room thermostat (optional)6 Collector (field

supply)M1..3 Individual

motorised valve to control loop FHL1 (field supply)

7 Shut-off valve

Installation manual

14EKHBH/X016BA


Calculating the pre-pressure of the expansion vessel

The pre-pressure (Pg) to be set depends on the maximuminstallation height difference (H) and is calculated as below:

Pg=(H/10+0.3) bar

Checking the maximum allowed water volume

To determine the maximum allowed water volume in the entire circuit,proceed as follows:

1 Determine for the calculated pre-pressure (Pg) thecorresponding maximum water volume using the graph below.

2 Check that the total water volume in the entire water circuit islower than this value.

If this is not the case, the expansion vessel inside the indoor unit istoo small for the installation.

Example 1

The indoor unit is installed 5 m below the highest point in the watercircuit. The total water volume in the water circuit is 100 l.

In this example, no action or adjustment is required.

Example 2

The indoor unit is installed at the highest point in the water circuit.The total water volume in the water circuit is 350 l.

Result:

Since 350 l is higher than 280 l, the pre-pressure must bedecreased (see table above).

The required pre-pressure is: Pg = (H/10 + 0.3) bar = (0/10 + 0.3) bar = 0.3 bar

The corresponding maximum water volume can be read fromthe graph: approximately 410 l.

Since the total water volume (350 l) is below the maximum watervolume (410 l), the expansion vessel suffices for the installation.

Setting the pre-pressure of the expansion vessel

When it is required to change the default pre-pressure of theexpansion vessel (1 bar), keep in mind the following guidelines:

Use only dry nitrogen to set the expansion vessel pre-pressure.

Inappropriate setting of the expansion vessel pre-pressure willlead to malfunction of the system. Therefore, the pre-pressureshould only be adjusted by a licensed installer.

Connecting the water circuit

Water connections must be made in accordance with localregulations and the outlook diagram delivered with the unit,respecting the water in- and outlet.

If air, moisture or dust gets in the water circuit, problems may occur.Therefore, always take into account the following when connectingthe water circuit:

Use clean pipes only.

Hold the pipe end downwards when removing burrs.

Cover the pipe end when inserting it through a wall so that nodust and dirt enter.

Use a good thread sealant for the sealing of the connections.The sealing must be able to withstand the pressures andtemperatures of the system.

When using non-brass metallic piping, make sure to insulateboth materials from each other to prevent galvanic corrosion.

Because brass is a soft material, use appropriate tooling forconnecting the water circuit. Inappropriate tooling will causedamage to the pipes.

Charging water

1 Connect the water supply to a drain and fill valve (see "Maincomponents" on page 10).

2 Make sure the automatic air purge valve is open (at least 2turns).

3 Fill with water until the manometer indicates a pressure ofapproximately 2.0 bar. Remove air in the circuit as much aspossible using the air purge valves. Air present in the watercircuit might cause malfunctioning of the backup heater.

4 Check that the backup heater vessel is filled with water byopening the pressure relief valve. Water must flow out of thevalve.

= pre-pressure

= maximum water volume

0.30.5

1

1.5

2

2.5

100500 20 150 200 250 300 350 400 450maximum water volume [l]

pre-

pres

sure

[bar

]

NOTE Be careful not to deform the unit piping by usingexcessive force when connecting the piping.Deformation of the piping can cause the unit tomalfunction.

NOTE The unit is only to be used in a closed watersystem. Application in an open water circuit canlead to excessive corrosion of the water piping.

Never use Zn-coated parts in the water circuit.Excessive corrosion of these parts may occur ascopper piping is used in the unit's internal watercircuit.

When using a 3-way valve in the water circuit.

It is very important to guarantee full separationbetween domestic hot water and floor heatingwater circuit.

When using a 3-way valve or a 2-way valve in thewater circuit, the maximum change over time ofthe valve shall be less than 60 seconds.


Installation manual

15

Piping insulation

The complete water circuit, inclusive all piping, must be insulated toprevent condensation during cooling operation and reduction of theheating and cooling capacity.

If the temperature is higher than 30°C and the humidity is higher thanRH 80%, then the thickness of the sealing materials should be atleast 20 mm in order to avoid condensation on the surface of thesealing.

Field wiring

Overview

The illustration below gives an overview of the required field wiringbetween several parts of the installation. Refer also to "Typicalapplication examples" on page 4.

NOTE During filling, it might not be possible to remove allair in the system. Remaining air will be removedthrough the automatic air purge valves during firstoperating hours of the system. Additional fillingwith water afterwards might be required.

The water pressure indicated on the manometerwill vary depending on the water temperature(higher pressure at higher water temperature).However, at all times water pressure shouldremain above 0.3 bar to avoid air entering thecircuit.

The unit might dispose some excessive waterthrough the pressure relief valve.

Water quality must be according to EU directive98/83 EC.

WARNING

A main switch or other means for disconnection,having a contact separation in all poles, must beincorporated in the fixed wiring in accordance withrelevant local and national legislation.

Switch off the power supply before making anyconnections.

Use only copper wires.

Never squeeze bundled cables and make sure that itdoes not come in contact with the piping and sharpedges.

Make sure no external pressure is applied to theterminal connections.

All field wiring and components must be installed by alicensed electrician and must comply with relevantEuropean and national regulations.

The field wiring must be carried out in accordancewith the wiring diagram supplied with the unit and theinstructions given below.

Be sure to use a dedicated power supply. Never use apower supply shared by another appliance.

Be sure to establish an earth. Do not earth the unit toa utility pipe, surge absorber, or telephone earth.Incomplete earth may cause electrical shock.

Be sure to install an earth leakage circuit breaker inaccordance with relevant local and nationalregulations. Failure to do so may cause electricalshock or fire.

Be sure to install the required fuses.

A Single power supply for outdoor unit, backup heater and booster heater

G 3-way valve for domestic hot water tank (optional)

H 2-way valve for cooling mode (field supply)

B Outdoor unit

C Bottom plate heater EKBPHT(a)

(a) Bottom plate heater is only applicable in combination with ERLQ or in case of optional EKBPHT kit.

I Domestic hot water tank (optional)

D Backup heater J Booster heater (optional)

E Indoor unit

F Room thermostat (optional)

K User interface (digital controller)

Item Description

Required number of conductors

Maximum running current

1 Power supply cable for outdoor unit

2+GND (a)

(a) Refer to nameplate on outdoor unit.

2 Indoor unit power supply and communication cable

3+GND (b)

(b) Cable section 2.5 mm2

3 Power cable for bottom plate heater

2 (c)

(c) Minimum cable section 0.75 mm2

4 Power supply cable for backup heater

2+GND or 3+GND

(d)

(d) See table under "Connection of the backup heater power supply" on page 18.

5 Room thermostat cable 3 or 4 100 mA(c)

6 3-way valve control cable 2+GND 100 mA(c)

7 2-way valve control cable 2+GND 100 mA(c)

8 Booster heater power supply and thermal protection cable

4+GND (b)

9 Thermistor cable 2 (e)

(e) The thermistor and connection wire (12 m) are delivered with the domestic hot water tank.

10 Booster heater power supply cable

2+GND 13 A

11 Benefit kWh rate power supply cable (voltage free contact)

2 (f)

(f) Cable section 0.75 mm2 till 1.25 mm2, maximum length: 50 m.Voltage free contact shall ensure the minimum applicable load of 15 V DC, 10 mA.

12 User interface cable 2 (g)

(g) Cable section 0.75 mm2 till 1.25 mm2, maximum length: 500 m.

CAUTION

Select all cables and wire sizes in accordance withrelevant local and national regulations.

T

I

M

M2

B

1 4

5

D6

7

8

9

3

E

A 1011

F

K

IC

J

H

G

Installation manual

16EKHBH/X016BA


Internal wiring - Parts table

Refer to the internal wiring diagram supplied with the unit (on theinside of the indoor unit switch box cover). The abbreviations usedare listed below.

A1P..................Main PCB

A2P..................Digital controller PCB (user interface)

A3P.......... * .....Thermostat (EKRTW/R) (PC=internal Power Cicuit) (optional)

A3P.......... * .....Solar pump station PCB (EKSR3PA) (optional)

A4P.......... * .....Digital I/O PCB (EKRP1HB) (optional)

A4P.......... * .....Receiver PCB (EKRTR) (optional)

BSK ......... * .....Solar pump station relay (EKSR3PA) (optional)

E1H..................Backup heater element 1



E4H..........# .....Booster heater (3 kW)

F1B,F3B ..........Fuse backup heater

F2B ..........# .....Fuse booster heater

F1T ..................Thermal fuse backup heater (250 V, 94°C)

FU1..................Fuse 3.15 A T 250 V for PCB

FU2..................Fuse 5 A T 250 V

FuR,FuS ..........Fuse 5 A 250 V for digital I/O PCB

K1M .................Contactor backup heater step 1

K2M .................Contactor backup heater step 2

K3M .........# .....Contactor booster heater

K4M .................Pump relay

K5M,K6M.........Contactor for backup heater all pole disconnection

M1P .................Pump

M2S .......## .....2-way valve for cooling mode (field supply)

M3S .........# .....3-way valve: floor heating/domestic hot water

PHC1 ...............Optocoupler input circuit

Q1DI ................Earth leakage circuit breaker (field supply)

Q1L..................Thermal protector backup heater

Q2L,Q3L ..# .....Thermal protector booster heater

R1H ......... * .....Humidity sensor (EKRTR) (optional)

R1T.......... * .....Ambient sensor (EKRTW) (optional)

R1T..................Outlet water heat exchanger thermistor

R2T.......... * .....External sensor (floor or ambient) (EKRTETS) (optional)

R2T..................Outlet water backup heater thermistor

R3T..................Refrigerant liquid side thermistor

R4T.................. Inlet water thermistor

R5T..........# .....Domestic hot water thermistor

S1L ..................Flow switch

S2S..................Benefit kWh rate power supply contact

S3S..................Dual set point 2 contact

S4S..................Dual set point 1 contact

SS1..................DIP switch

TR1..................Transformer 24 V for PCB

V1S..................Spark suppression 1

V2S..................Spark suppression 2

X1M~X9M........Terminal blocks

Field wiring guidelines Most field wiring on the indoor unit side is to be made on the

terminal block inside the switch box. To gain access to theterminal block, remove the indoor unit cover and switch boxservice panel, see "Opening the indoor unit" on page 9.

Cable tie mountings are provided at the bottom of the switchbox. Fix all cables using cable ties (field supply).

A dedicated power circuit is required for the backup heater.

Installations equipped with a domestic hot water tank (optional),require a dedicated power circuit for the booster heater.

Please refer to the domestic hot water tank installation manual.

Connection of the indoor unit power supply andcommunication cable

Power circuit and cable requirements

Power supply for the indoor unit is to be provided through the outdoorunit. Data communication with the outdoor unit is provided throughthe same cable.

For all guidelines and specifications regarding field wiring betweenthe indoor unit and the outdoor unit, please refer to the outdoor unitinstallation manual.

Procedure

1 Using the appropriate cable, connect the power circuit to theappropriate terminals as shown on the wiring diagram and theillustration below.

2 Connect the earth conductor (yellow/green) to the earthingscrew on the switch box mounting plate.

3 Fix the cable with cable ties to the cable tie mountings to ensurestrain relief.

4 When routing out cables, make sure that these do not obstructmounting of the indoor unit cover, see figure 3.

Note: only relevant field wiring is shown.

WARNING

After finishing the electric work, confirm that each electricpart and terminal inside the electric parts box is connectedsecurely.

* Optional

# Applications with domestic hot water tank only

## Heating/cooling applications only

WARNING

Switch off all power supply – i.e. outdoor unit powersupply and backup heater and domestic hot watertank power supply (if applicable) – before removingthe switch box service panel.

X3MX1M

1 2 3

1 32

1 2 3


Installation manual

17

Connection of the backup heater power supply

Power circuit and cable requirements

This power circuit must be protected with the required safety devicesaccording to local and national regulations.

Select the power cable in accordance with relevant local and nationalregulations. For the maximum running current of the backup heater,refer to the table below.

(1)(2)

Procedure

1 Using the appropriate cable, connect the power circuit to themain circuit breaker as shown on the wiring diagram and theillustration below.

2 Connect the earth conductor (yellow/green) to the earthingscrew on the X1M terminal.


Note: only relevant field wiring is shown.

Connection of the thermostat cable

Connection of the thermostat cable depends on the application.

See also "Typical application examples" on page 4 and "Roomthermostat installation configuration" on page 21 for more informationand configuration options on pump operation in combination with aroom thermostat.

Thermostat requirements

Power supply: 230 V AC or battery operated

Contact voltage: 230 V.

Procedure

1 Connect the thermostat cable to the appropriate terminals asshown on the wiring diagram and installation manual of the roomthermostat kit.


3 Set DIP switch SS2-3 on the PCB to ON. See "Room thermostatinstallation configuration" on page 21 for more information.

Connection of the first set point and second set point contacts

The connection of the set point contact is only relevant in case dualset point contact is enabled.

See also "Typical application examples" on page 4 and "Dual setpoint control" on page 28.

Contact requirements

The contact shall be a voltage free contact that ensure 230 V(100 mA).

Procedure

1 Connect the contact of first set point and second set point to theappropriate terminals as shown in the figure below

2 Fix the cables with cable ties to the cable tie mountings toensure strain relief.

3 Depending on the required pump operation set DIP switchSS2-3 and field setting [F-00]. See "Pump operationconfiguration" on page 22 and field setting [F-00] in "[F] Optionsetup" on page 31.

Connection of the valve control cables

Valve requirements

Power supply: 230 V AC

Maximum running current: 100 mA

Wiring the 2-way valve

1 Using the appropriate cable, connect the valve control cable tothe X2M terminal as shown on the wiring diagram.

2 Fix the cable(s) with cable ties to the cable tie mountings toensure strain relief.

Use a dedicated power circuit for the backup heater andbooster heater. Never use a power circuit shared byanother appliance.

Indoor unit model

Backup heater

capacity

Backup heater nominal voltage

Maximum running current Zmax (Ω)

EKHB*016BA3V3 3 kW 1x 230 V 13 A —

EKHB*016BA6V3(a) (b)

(a) Equipment complying with EN/IEC 61000-3-12(1)

(b) This equipment complies with EN/IEC 61000-3-11(2) provided that the system impedance Zsys is less than or equal to Zmax at the interface point between the user's supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a system impedance Zsys less than or equal to Zmax.

6 kW 1x 230 V 26 A 0.29

EKHB*016BA6WN 6 kW 3x 400 V 8.6 A —

EKHB*016BA9WN 9 kW 3x 400 V 13 A —

EKHB*016BA6T1 6 kW 3x 230 V 15 A —

EKHB*016BA9T1(b) 9 kW 3x 230 V 23 A —

(1) European/International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-voltage systems with input current >16 A and ≤75 A per phase.

(2) European/International Technical Standard setting the limits for voltage changes, voltage fluctuations and flicker in public low-voltage supply systems for equipment with rated current ≤75 A.

3x 230 V3x 400 V 1x 230 V

L1 N

L1 L2 L3 N L1 N

X1M X1MX3M

L1 L2 L3

NOTE Wiring is different for a NC (normal closed) valveand a NO (normal open) valve. Make sure toconnect to the correct terminal numbers as detailedon the wiring diagram and illustrations below.

Normal closed (NC) 2-way valve Normal open (NO) 2-way valve

X2M

SP1SP2

1 2 3 4

SP1 First set point contact

SP2 Second set point contact

NC

5X2M 6 7

MNO

5 6X2M 7

M

Installation manual

18EKHBH/X016BA


Wiring the 3-way valve

1 Using the appropriate cable, connect the valve control cable tothe appropriate terminals as shown on the wiring diagram.

2 Fix the cable(s) with cable ties to the cable tie mountings toensure strain relief.

Connection to a benefit kWh rate power supply

Electricity companies throughout the world work hard to providereliable electric service at competitive prices and are often authorizedto bill clients at benefit rates. E.g. time-of-use rates, seasonal rates,Wärmepumpentarif in Germany and Austria, ...

This equipment allows for connection to such benefit rate powersupply delivery systems.

Consult with the electricity company acting as provider at the sitewhere this equipment is to be installed to know whether it isappropriate to connect the equipment in one of the benefit kWh ratepower supply delivery systems available, if any.

When the equipment is connected to such benefit kWh rate powersupply, the electricity company is allowed to:

interrupt power supply to the equipment for certain periods oftime;

demand that the equipment only consumes a limited amount ofelectricity during certain periods of time.

The indoor unit is designed to receive an input signal by which theunit switches into forced off mode. At that moment, the outdoor unitcompressor will not operate.

NOTE Two types of 3-way valves can be connected.Wiring is different for each type:

"Spring return 2-wire" type 3-way valveThe 3-way valve should be fitted as such thatwhen the 3-way valve is idle (not activated),the space heating circuit is selected.

"SPST 3-wire" type 3-way valveThe 3-way valve should be fitted as such thatwhen terminal ports 9 and 10 are electrified,the domestic hot water circuit is selected.

"Spring return 2-wire" valve "SPST 3-wire" valve

9X2M 8 10

M

9X2M 8 10

M

CAUTION

For a benefit kWh rate power supply like illustratedbelow as type 1

If the benefit kWh rate power supply is of the type thatpower supply is not interrupted, then control of theheaters is still possible.

For the different possibilities of controlling heaters atmoments that benefit kWh rate is active, refer to"[D] Benefit kWh rate power supply/Local shift valueweather dependent" on page 31.

If heaters must be controlled at moments that thebenefit kWh rate power supply is off, then theseheaters shall be connected to a separate powersupply.

During the period that the benefit kWh rate is activeand power supply is continuous, then stand-by powerconsumption is possible (PCB, controller, pump, ...).

For a benefit kWh rate power supply like illustratedbelow as types 2 or 3

If during benefit kWh rate power supply the power supply isshut, then heaters can not be controlled.

This power supply interruption should not be longerthan 2 hours, otherwise the real time clock of thecontroller will be reset.

During power supply interruption, the controllerdisplay will be blank.


Installation manual

19

Possible types of benefit kWh rate power supply

Possible connections and requirements to connect the equipment tosuch power supply are illustrated in the figure below:

When the outdoor unit is connected to a benefit kWh rate powersupply, the voltage free contact of the receiver controlling the benefitkWh rate signal of the electricity company must be connected toclamps 17 and 18 of X2M (as illustrated in the figure above).

When parameter [D-01]=1 at the moment that the benefit kWh ratesignal is sent by the electricity company, that contact will open andthe unit will go in forced off mode(1).

When parameter [D-01]=2 at the moment that the benefit kWh ratesignal is sent by the electricity company, that contact will close andthe unit will go in forced off mode(2).

Type 1

This type of benefit kWh rate power supply is not interrupted.

Type 2

This type of benefit kWh rate power supply is interrupted after elapseof time.

Type 3

This type of benefit kWh rate power supply is interruptedimmediately.

Relocation of the digital controller

The digital controller is from factory located on the indoor unit. (See"Main components" on page 10 for actual position). If required, thedigital controller can be repositioned.

Be aware that only 1 digital controller can be connected to the indoorunit.

Wiring specifications

Mounting

1 Remove the front part of the digital controller.

Insert a slotted screwdriver into the slots (1)in the rear part of the digital controller, andremove the front part of the digitalcontroller.

2 Fasten the digital controller on a flatsurface.

1 Benefit kWh rate power supply box

2 Receiver controlling the signal of the electricity company

3 Power supply to outdoor unit (refer to the installation manual delivered with the outdoor unit)

4 Voltage free contact to indoor unit

(1) When the signal is released again, the voltage free contact will close and the unit will restart operation. It is therefore important to leave the auto restart function enabled. Refer to "[3] Auto restart" on page 25.

(2) When the signal is released again, the voltage free contact will open and the unit will restart operation. It is therefore important to leave the auto restart function enabled. Refer to "[3] Auto restart" on page 25.

1

2

3

X2M17 18

X40AA1P

L N

2

4

1

3

3

L N

2

1

43

43

L N

2

1

S2S

S2S

S2S

[D-01]=1

1

2

3

L N

2

1

3

L N

2

1

43

44

43

L N

2

1

S2S

S2S

S2S

[D-01]=2

When connecting the equipment to a benefit kWh ratepower supply, change field setting [D-01]. In case thebenefit kWh rate power supply is of the type that powersupply is not interrupted (like illustrated above as type 1)change both field settings [D-01] and [D-00]. Refer to"[D] Benefit kWh rate power supply/Local shift valueweather dependent" on page 31 of chapter "Field settings".

If the benefit kWh rate power supply is of the type thatpower supply is not interrupted, the unit will be forced tooff. Controlling the solar pump is still possible.

When the benefit kWh rate signal is sent, the centralisedcontrol indicator e will flash to indicate that the benefitkWh rate is active.

Wire specification Value

Type 2 wire

Section 0.75-1.25 mm2

Maximum length 500 m

NOTE The wiring for connection is not included.

NOTE The digital controller has to be mounted indoors.

NOTE Be careful not to distort the shape of the lower part ofthe digital controller by over tightening the mountingscrews.

1

Installation manual

20EKHBH/X016BA


3 Wire the unit.

Connect the terminals on top of the front part of the digitalcontroller and the terminals inside the unit (P1 to 16, P2 to 16a).

4 Reattach the upper part of the digital controller.

First begin fitting from the clips at thebottom.

START-UP AND CONFIGURATION

The indoor unit should be configured by the installer to match theinstallation environment (outdoor climate, installed options, etc.) anduser expertise.

DIP switch settings overview

DIP switch SS2 is located on the switch box PCB (see "Switch boxmain components" on page 11) and allows configuration of domestichot water tank installation, room thermostat connection and pumpoperation.

Room thermostat installation configuration

1 Unit

2 Rear part of the digital controller

3 Front part of the digital controller

4 Wired from the rear

5 Wired from the top

6 Notch the part for the wiring to pass through with nippers, etc.

NOTE When wiring, run the wiring away from thepower supply wiring in order to avoidreceiving electric noise (external noise).

Peel the shield for the partthat has to pass through theinside of the digital controllercase ( l ).

CAUTION

Be careful not to pinch the wiring when attaching.

P1P2

1 1

6

2

3

4 5

P1P216

a1616

a16

1

It is important that all information in this chapter is readsequentially by the installer and that the system isconfigured as applicable.

WARNING

Switch off the power supply before opening the switch boxservice panel and making any changes to the DIP switchsettings.

DIP switch SS2 Description ON OFF

1 Not applicable for installer — (Default)

2 Domestic hot water tank installation (see "Domestic hot water tank installation configuration" on page 23)

Installed Not installed (Default)

3 Room thermostat connection(see "Room thermostat installation configuration" on page 21)

Room thermostat connected

No room thermostat connected (Default)

4 This setting(a) decides the operation mode of the heat pump when there is a simultaneous demand for more space heating/cooling and domestic water heating.

(a) Only applicable in case DIP switch 2 = ON.

Heating/cooling priority

Priority to highest demand side(b)

(b) Heating/cooling or domestic water heating mode can be restricted by schedule timer and/or field settings (4, 5, 8).

When no room thermostat is connected tothe indoor unit, toggle switch SS2-3 should beset to OFF.

When the room thermostat is connected tothe indoor unit, toggle switch SS2-3 should beset to ON.

On the room thermostat, confirm the correct settings (6®02=yes,6®05=9, 6®06=5) to prevent the pump from repeatedly turning onand off (i.e. chattering), and thereby impacting the lifetime ofthe pump.

4321ON

OF

F

4321ON

OF

F

4321ON

OF

F


Installation manual

21

The following table summarizes the required configuration andthermostat wiring at the terminal block (X2M: 1, 2, 3, 4) in the switchbox. Pump operation is listed in the third column. The three lastcolumns indicate whether the following functionality is available onthe user interface (UI) or handled by the thermostat (T):

• space heating or cooling on/off (y)• heating/cooling changeover (=)• heating and cooling schedule timers (pr)

Pump operation configuration

Without room thermostat: DIP switch SS2-3 = OFF

When no thermostat is connected to the indoor unit, pump operationwill be determined by the leaving water temperature.

To force continuous pump operation when no room thermostat isconnected do the following:

- set toggle switch SS2-3 to ON,- short-circuit the terminal numbers 1-2-4 on the terminal block

in the switch box.

With room thermostat DIP switch: SS2-3 = ON

When the thermostat is connected to the indoor unit, the pump willoperate continuously whenever there is heating or cooling demandrequested by the thermostat.

Dual set point

When dual set point is enabled, the pump operation will bedetermined depending on the status of the DIP switch SS2-3 and setpoint selection contacts. Refer to the pump operation configurationswhen the thermostat is connected or not as described above.

The following table summarizes the required configuration and wiringat the terminal block (X2M: 1, 2, 4) in the switch box. Pump operationis listed in the third column. The three last columns indicate whetherthe following functionality is available on the user interface (UI) orhandled by the set point selection contacts SP1 and SP2:

• space heating or cooling on/off (y)• heating/cooling changeover (=)• heating and cooling schedule timers (pr)

When the room thermostat is connected to the indoorunit, the heating and cooling schedule timers arenever available. Other schedule timers are notaffected. For more information on the schedule timers,refer to the operation manual.

When the room thermostat is connected to the indoorunit, and the = button or y button is pressed, thecentralised control indicator e will flash to indicatethat the room thermostat has priority and controlson/off operation and change over operation.

Thermostat ConfigurationPump operation yyyy ==== pppprrrr

No thermostat • SS2-3 = OFF• wiring: (non)

determined by leaving water temperature(a)

(a) The pump will stop when space heating/cooling is turned off or when the water reaches the desired water temperature as set on the user interface. With space heating/cooling turned on, the pump will then run every 5 minutes during 3 minutes to check the water temperature.

UI UI UI

• SS2-3 = ON• wiring:

on when space heating or cooling is on (y)

UI UI UI

Heating only thermostat

• SS2-3 = ON• wiring: (see

installation manual of the room thermostat kit)

on when heating request by room thermostat

T — —

Thermostat with heating/cooling switch

• SS2-3 = ON• wiring: (see

installation manual of the room thermostat kit)

on when heating request or cooling request by room thermostat

T T —

X2M

1 2 3 4

X2M

1 2 3 4

NOTE To set the pump speed, refer to "Setting the pumpspeed" on page 23.

When dual set point is enabled, the "forced continuouspump operation" is not possible. When SS2-3 is ON whileSP1 and SP2 are both closed, the pump operation will bethe same operation as "with room thermostat" and thesecond set point will be the applicable set point. Refer to"Dual set point control" on page 28.

Dual set point

Configuration Pump operation yyyy ==== pppprrrr

• [7-02]=1• SS2-3 = OFF• wiring:

determined by leaving water temperature(a)

(a) The pump will stop when space heating/cooling is turned off or when the water reaches the desired water temperature as set on the user interface. With space heating/cooling turned on, the pump will then run every 5 minutes during 3 minutes to check the water temperature.

UI UI UI

• [7-02]=1• SS2-3 = ON• wiring:

on when main or/and sub set point is requested

SP2/SP1 UI —

SP1 = First set point contactSP2 = Second set point contact

X2M

SP1SP2

1 2 3 4

X2M

1 2 3 4

SP1SP2

Installation manual

22EKHBH/X016BA


Domestic hot water tank installation configuration

Initial start-up at low outdoor ambient temperatures

During initial start-up and when water temperature is low, it isimportant that the water is heated gradually. Failure to do so mayresult in cracking of concrete floors due to rapid temperature change.Please contact the responsible cast concrete building contractor forfurther details.

To do so, the lowest leaving water set temperature can be decreasedto a value between 15°C and 25°C by adjusting the field setting[9-01] (heating set point lower limit). Refer to "Field settings" onpage 24.

Pre-operation checks

Checks before initial start-up

After the installation of the unit, check the following before switchingon the circuit breaker:

1 Field wiring

Make sure that the field wiring between local supply panel andindoor unit, outdoor unit and indoor unit, indoor unit and valves(when applicable), indoor unit and room thermostat (whenapplicable), and indoor unit and domestic hot water tank hasbeen carried out according to the instructions described in thechapter "Field wiring" on page 16, according to the wiringdiagrams and according to European and national regulations.

2 Fuses or protection devices

Check that the fuses or the locally installed protection devicesare of the size and type specified in the chapter "Technicalspecifications" on page 40. Make sure that neither a fuse nor aprotection device has been bypassed.

3 Backup heater circuit breaker F1B/F3B

Do not forget to turn on the backup heater circuit breaker F2B inthe switchbox (F1B/F3B depends on the backup heater type).Refer to the wiring diagram.

4 Booster heater circuit breaker F2B

Do not forget to turn on the booster heater circuit breaker F2B inthe switch box (applies only to units with optional domestic hotwater tank installed).

5 Earth wiring

Make sure that the earth wires have been connected properlyand that the earth terminals are tightened.

6 Internal wiring

Visually check the switch box on loose connections or damagedelectrical components.

7 Fixation

Check that the unit is properly fixed, to avoid abnormal noisesand vibrations when starting up the unit.

8 Damaged equipment

Check the inside of the unit on damaged components orsqueezed pipes.

9 Refrigerant leak

Check the inside of the unit on refrigerant leakage. If there is arefrigerant leak, call your local dealer.

10 Power supply voltage

Check the power supply voltage on the local supply panel. Thevoltage must correspond to the voltage on the identification labelof the unit.

11 Air purge valve

Make sure the air purge valve is open (at least 2 turns).

12 Pressure relief valve

Check if the backup heater is completely filled with water byoperating the pressure relief valve. It should purge water insteadof air.

13 Shut-off valves

Make sure that the shut-off valves are correctly installed andfully open.

Powering up the indoor unit

When power supply to the indoor unit is turned on, "88" is displayedon the user interface during its initialisation, which might take up to30 seconds. During this process the user interface cannot beoperated.

Setting the pump speed

The pump speed can be selected on the pump (see "Maincomponents" on page 10).

The default setting is high speed (I). If the water flow in the system istoo high (e.g., noise of running water in the installation) the speedcan be set to medium speed (II) or low speed (III).

The available external static pressure (ESP, expressed in kPa) infunction of the water flow (l/min) is shown in the graph below.

When no domestic hot water tank isinstalled, toggle switch SS2-2 should be set toOFF (default).

When a domestic hot water tank is installed,toggle switch SS2-2 should be set to ON.

When SS2-3 was set to ON without all necessary andcorrect wiring connections between indoor unit andswitchbox of the domestic hot water tank, the error code ACwill be displayed on the user interface.

Heating between 15°C and 25°C is performed by thebackup heater only.

DANGER

Switch off all relevant power supply before making anyconnections.

4321ON

OF

F

4321ON

OF

F

NOTE Operating the system with the backup heater notcompletely filled with water will damage the backupheater!

NOTE Operating the system with closed valves will damagethe pump!

0

10

[l/min]

ES

P [k

Pa]

16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58

20

30

40

50

60

5

15

25

35

45

55

65

III III

III III


Installation manual

23

Field settings

The indoor unit shall be configured by the installer to match theinstallation environment (outdoor climate, installed options, etc.) anduser demand. Thereto, a number of so called field settings areavailable. These field settings are accessible and programmablethrough 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 andthird digit [03] together indicate the 'second code'.

A list of all field settings and default values is given under "Fieldsettings table" on page 33. In this same list, we provided for 2columns to register the date and value of altered field settings atvariance with the default value.

A detailed description of each field setting is given under "Detaileddescription" on page 24.

Procedure

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

1 Press the z button for a minimum of 5 seconds to enter FIELDSET MODE.The $ icon (3) will be displayed. The current selected fieldsetting code is indicated ; (2), with the set value displayed tothe right - (1).

2 Press the bgi button to select the appropriate fieldsetting first code.

3 Press the bgj button to select the appropriate fieldsetting second code.

4 Press the pfi button and pfj button to changethe set value of the select field setting.

5 Save the new value by pressing the pr button.

6 Repeat step 2 through 4 to change other field settings asrequired.

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

Detailed description

[0] User permission level

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

Three permission levels are defined (see the table below). Switchingbetween level 1 and level 2/3 is done by simultaneously pressingbuttons pfi and pfj immediately followed bysimultaneously pressing buttons s and ba, and keeping all 4buttons pressed for at least 5 seconds (in normal mode). Note that noindication on the user interface is given. When level 2/3 is selected,the actual permission level – either level 2 or level 3 – is determinedby the field setting [0-00].

[1] Weather dependent set point (heating operation only)

The weather dependent set point field settings define the parametersfor the weather dependent operation of the unit. When weatherdependent operation is active the water temperature is determinedautomatically depending on the outdoor temperature: colder outdoortemperatures will result in warmer water and vice versa. Duringweather dependent operation, the user has the possibility to shift upor down the target water temperature by a maximum of 5°C. See theoperation manual for more details on weather dependent operation.

[1-00] Low ambient temperature (Lo_A): low outdoortemperature.

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

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

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

NOTE Changes made to a specific field setting are onlystored when the pr button is pressed. Navigating to anew field setting code or pressing the z button willdiscard the change made.

Before shipping, the set values have been set asshown under "Field settings table" on page 33.

When exiting FIELD SET MODE, "88" may bedisplayed on the user interface LCD while the unitinitialises itself.

2

31

Button

Permission level

1 2 3

Quiet mode button s operable — —

Weather dependent set point button ba operable — —

Schedule timer enable/disable button pr operable operable —

Programming button < operable — —

Time adjust buttons

pf

i

pf

j

operable — —

Inspection/test operation button z operable — —

Tt Target water temperature


= Shift value

Lo_Ti

Lo_A Hi_A TA

Tt

+ 05

00

– 05

Hi_Ti Shift value

Installation manual

24EKHBH/X016BA


[2] Disinfection function

Applies only to installations with a domestic hot water tank.

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

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

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

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

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

[2-04] Interval: time period defining how long the set pointtemperature should be maintained.

[3] Auto restart

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

Note that with the function disabled the schedule timer will not beactivated 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 isturned ON (0) or OFF (1).

[4] Backup/booster heater operation and space heating offtemperature

Backup heater operationThe operation of the backup heater can altogether be enabled ordisabled, or it can be disabled depending on operation of the boosterheater.

[4-00] Status: defines whether backup heater operation isenabled (1) or disabled (0).

[4-01] Priority: defines whether backup heater and boosterheater can operate simultaneously (0), or if the boosterheater operation has priority over the backup heateroperation (1), or if the backup heater operation has priorityover the booster heater operation (2).

Space heating off temperature

[4-02] Space heating off temperature: outdoor temperatureabove which space heating is turned off, to avoidoverheating.

Booster heater operation


The operation of the booster heater can be enabled or limiteddepending on outdoor temperature (TA), domestic hot watertemperature (TDHW) or operation mode of the heat pump.

[4-03] Booster heater operation: defines whether the optionalbooster heater operation is enabled (1) or has certainlimitations (0/2/3).

Explanation of settings of [4-03]

Booster heater will/can only operate if domestic hot water modeis activated (w).

[4-03]=0, then booster heater operation is only allowedduring "[2] Disinfection function" and "Powerful domesticwater heating" (see operation manual).This setting is only recommended in case the capacity of theheat pump can cover the heating requirements of the houseand domestic hot water over the complete heating season.The result of this setting is that the domestic hot water willnever be heated by the booster heater except for"[2] Disinfection function" and "Powerful domestic waterheating" (see operation manual).

CAUTION

The disinfection function field settings must be configuredby the installer according to local and national regulations.

TDHW Domestic hot water temperature

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

TH High set point temperature [2-03]

t Time

WARNING

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

If this high domestic hot water temperature can be apotential risk for human injuries, a mixing valve (fieldsupply) shall be installed at the hot water outlet connectionof the domestic hot water tank. This mixing valve shallsecure that the hot water temperature at the hot water tapnever rise above a set maximum value. This maximumallowable hot water temperature shall be selectedaccording to local and national regulations.

NOTE It is therefore recommended to leave the auto restartfunction enabled.

NOTE If the benefit kWh rate power supply is of the type thatpower supply is interrupted, then always allow the autorestart function.

00.00 22.00 24.0001.00 23.00 t

TDHW

TH

TU

[2-02]

[2-03] [2-04]

NOTE When the priority field setting is set toON (1), space heating performance of thesystem might be decreased at low outdoortemperatures, since in case of domesticwater heating demand the backup heater willnot be available for space heating (spaceheating will still be provided by the heatpump).

When the priority field setting is set toON (2), domestic water heating performanceof the system might be decreased at lowoutdoor temperatures, since in case of spaceheating demand the booster heater will notbe available for domestic water heating.However domestic water heating by heatpump will still be available.

When the priority field setting is set to OFF(0), make sure that electrical powerconsumption does not exceed supply limits.

If the booster heater operation is limited ([4-03]=0)and the ambient outdoor temperature TA is lower thanthe field setting to which parameter [5-03] is set and[5-02]=1, then the domestic hot water will not beheated.

The consequence of this setting is that the domestichot water temperature (TDHW) can be maximum theheat pump OFF temperature (THP OFF). Refer tosetting of [6-00] and [6-01] in "[6]" on page 27.


Installation manual

25

[4-03]=1, then booster heater heater operation is onlydetermined by booster heater OFF temperature (TBH OFF),booster heater ON temperature (TBH ON) and/or scheduletimer. Refer to setting "[7-00]" on page 27 and "[7-01]" onpage 28.

[4-03]=2, then booster heater operation is only allowed if heatpump is out of "operation range" of heat pump domesticwater heating mode (TA<[5-03] or TA>35°C) or domestic hotwater temperature is 2°C lower then the heat pump OFFtemperature (THP OFF) for domestic hot water mode(TDHW>THP OFF–2°C). (Refer to setting [5-03] on page 26,[6-00] on page 27 and [6-01] on page 27).Results in the most optimum coverage of domestic hot waterheated by the pump.

[4-03]=3, then booster heater operation is the same assetting 1, except that booster heater is OFF when the heatpump is active in domestic hot water mode. Theconsequence of this functionality is that setting [8-03] is notrelevant.Results in optimum coverage of domestic hot water heatedby heat pump in relation with [8-04].

[5] Equilibrium temperature and space heating prioritytemperature

Equilibrium temperature — The 'equilibrium temperature' fieldsettings apply to operation of the backup heater. When the equilibrium temperature function is enabled, operation ofthe backup heater is restricted to low outdoor temperatures, i.e. whenthe outdoor temperature equals or drops below the specifiedequilibrium temperature. When the function is disabled, operation ofthe backup heater is possible at all outdoor temperatures. Enablingthis function reduces the working time of the backup heater.

[5-00] Equilibrium temperature status: specifies whether theequilibrium temperature function is enabled (1) ordisabled (0).

[5-01] Equilibrium temperature: outdoor temperature belowwhich operation of the backup heater is allowed.

Space heating priority temperature — Applies only to installationswith a domestic hot water tank. — The 'space heating prioritytemperature' field settings apply to operation of the 3-way valve andthe booster heater in the domestic hot water tank.When the space heating priority function is enabled, it is assured thatthe full capacity of the heat pump is used for space heating onlywhen the outdoor temperature equals or drops below the specifiedspace heating priority temperature, i.e. low outdoor temperature. Inthis case the domestic hot water will only be heated by the boosterheater.

[5-02] Space heating priority status: specifies whether spaceheating priority is enabled (1) or disabled (0).

[5-03] Space heating priority temperature: outdoortemperature below which the domestic hot water will beheated by the booster heater only, i.e. low outdoortemperature.

[5-04] Set point correction for domestic hot watertemperature: set point correction for the desired domestic hotwater temperature, to be applied at low outdoor temperaturewhen space heating priority is enabled. The corrected(higher) set point will make sure that the total heat capacity ofthe water in the tank remains approximately unchanged, bycompensating for the colder bottom water layer of the tank(because the heat exchanger coil is not operational) with awarmer top layer.

When setting [4-03]=1/2/3, the booster heateroperation can still be restricted by the scheduletimer as well. I.e., when booster heater operationis preferred during certain period of the day. (Seeoperation manual)

When setting [4-03]=2, the booster heater will beallowed to operate when TA<[5-03] independentof the status of [5-02]. If bivalent operation isenabled and permission signal for auxiliary boileris ON, the booster heater will be restricted evenwhen TA<[5-03]. (See "[C-02]" on page 30).

Booster heater is always allowed during powerfuland disinfection function, except for the periodthat the backup heater operation is required forsafety reasons and [4-02]=1.

If the booster heater operation is limited ([4-03]=0)and the ambient outdoor temperature TA is lower thanthe field setting to which parameter [5-03] is set and[5-02]=1, then the domestic hot water will not beheated.

Tset Domestic hot water set point temperature

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


Space heating priority

WARNING

Be aware that the domestic hot water temperature will beautomatically increased with the value selected in fieldsetting [5-04] (if the outdoor temperature drops below fieldsetting [5-03]) compare to the user set point for domestichot water (TU). Refer to field setting [5-03], [7-00] and theoperation manual to select preferable set point.

If this high domestic hot water temperature can be apotential risk for human injuries, a mixing valve (fieldsupply) shall be installed at the hot water outlet connectionof the domestic hot water tank. This mixing valve shallsecure that the hot water temperature at the hot water tapnever rise above a set maximum value. This maximumallowable hot water temperature shall be selectedaccording to local and national regulations.

TA

Tset

TU

[5-03]

[5-04]

Installation manual

26EKHBH/X016BA


[6] DT for heat pump domestic water heating mode


The 'DT (temperature difference) for heat pump domestic waterheating mode' field settings determine the temperatures at whichheating of the domestic hot water by the heat pump will be started(i.e., the heat pump ON temperature) and stopped (i.e., the heatpump OFF temperature).When the domestic hot water temperature drops below the heatpump ON temperature (THP ON), heating of the domestic hot water bythe heat pump will be started. As soon as the domestic hot watertemperature reaches the heat pump OFF temperature (THP OFF) orthe user set point temperature (TU), heating of the domestic hot waterby the heat pump will be stopped (by switching the 3-way valve).

The heat pump OFF temperature, and the heat pump ONtemperature, and its relation with field settings [6-00] and [6-01] areexplained in the illustration below.

[6-00] Start: temperature difference determining the heatpump ON temperature (THP ON). See illustration.

[6-01] Stop: temperature difference determining the heatpump OFF temperature (THP OFF). See illustration.

[7] DT for booster heater and dual set point control

DT for booster heater


When the domestic hot water is heated and the domestic hot waterset point temperature (as set by the user) has been reached, thebooster heater will continue to heat the domestic hot water to atemperature a few degrees above the set point temperature, i.e. thebooster heater OFF temperature. These extra degrees are specifiedby the domestic hot water step length field setting. Correct settingprevents the booster heater from repeatedly turning on and off (i.e.chattering) to maintain the domestic hot water set point temperature.Note: the booster heater will turn back on when the domestic hotwater temperature drops [7-01] (field setting) below the boosterheater OFF temperature.

[7-00] Domestic hot water step length: temperaturedifference above the domestic hot water set pointtemperature before the booster heater is turned off.


THP MAX Maximum heat pump temperature at sensor in domestic hot water tank (50°C)(depending on TA)(a)

(a) 50°C = THP MAX at TA≤25°C.48°C = THP MAX at TA>25°C.

THP OFF Heat pump OFF temperature

THP ON Heat pump ON temperature

The maximum domestic hot water temperature that can bereached with the heat pump is 50°C. It is advised to selectTHP OFF not higher than 48°C in order to improveperformance of the heat pump during domestic waterheating mode.

When setting [4-03]=0 or 2 special attention to setting[6-00] is recommended. A good balance between therequired domestic hot water temperature and heat pumpON temperature (THP ON) is a must.

TU > THP MAX

T(°C)

70 TU

50 THP MAX48 THP OFF

41 THP ON

[6-01]

[6-00]

TU < THP MAX

T(°C)

45 TU = THP OFF

50 THP MAX

38 THP ON

[6-00]

TU = 45°C[6-01] = 2°C[6-00] = 7°C

TU = 70°C[6-01] = 2°C[6-00] = 7°C

If the schedule timer for booster heater (see the operationmanual) is active, the booster heater will only operate ifallowed by this schedule timer.

BH Booster heater

HP Heat pump. If heating up time by the heat pump takes too long, auxiliary heating by the booster heater can take place

TBH OFF Booster heater OFF temperature (TU + [7-00])

TBH ON Booster heater ON temperature (TBH OFF – [7-01])

THP MAX Maximum heat pump temperature at sensor in domestic hot water tank

THP OFF Heat pump OFF temperature (THP MAX – [6-01])

THP ON Heat pump ON temperature (THP OFF – [6-00])

TDHW Domestic hot water temperature


t Time

WARNING

Be aware that the domestic hot water temperature will beautomatically increased (always) with the value selected infield setting [7-00] compare to the user set point fordomestic hot water (TU). Refer to field setting [7-00] andthe operation manual to select preferable set point.

If this high water temperature can be a potential risk forhuman injuries, a mixing valve (field supply) shall beinstalled at the hot water outlet connection of the domestichot water tank. This mixing valve shall secure that the hotwater temperature at the hot water tap never rise above aset maximum value. This maximum allowable hot watertemperature shall be selected according to local andnational regulations.

If the booster heater operation is limited ([4-03]=0), thenset point of field setting parameter [7-00] has only meaningfor powerful domestic water heating.

t

TBH ON

TDHW

THP ON

THP OFF

THP MAX

TU

TBH OFF

[6-01]

[6-00]

[7-00] [7-01]

TU = 70°C[7-00] = 3°C[6-01] = 2°C[6-00] = 7°C

HP BH HP

5

10

20

30

4041

485060

7170

73


Installation manual

27

[7-01] Hysteresis value booster heater: temperaturedifference determining the booster heater ON temperature(TBH ON). TBH ON = TBH OFF – [7-01]

Dual set point control

Applies only to installations with different heat emitter which requiredifferent set points.

Dual set point control makes it possible to generate 2 different setpoints.

[7-02] Dual set point control status: defines whether the dualset point control is enabled (1) or disabled (0).

[7-03] Second set point heating: specifies the second setpoint temperature in heating operation.

[7-04] Second set point cooling: specifies the second setpoint temperature in cooling operation.

[8] Domestic water heating mode timer


The 'domestic water heating mode timer' field settings defines theminimum and maximum domestic water heating times, minimum timebetween two domestic water heating cycles by heat pump, andbooster heater delay time.

[8-00] Minimum running time: specifies the minimum timeperiod during which heat pump domestic water heating modeshould be activated, even when the target domestic hot watertemperature for heat pump (THP OFF) has already beenreached.

[8-01] Maximum running time: specifies the maximum timeperiod during which heat pump domestic water heating modecan be activated, even when the target domestic hot watertemperature for heat pump (THP OFF) has not yet beenreached.The actual maximum running time will automatically variatebetween [8-01] and [8-01]+[8-04] depending on the outdoortemperature. See figure in chapter "[8-04]" on page 29.

[8-02] Anti-recycling time: specifies the minimum requiredinterval between two heat pump domestic water heatingmode cycles.The actual anti-recycling time will automatically variatebetween [8-02] and 0 depending on the outdoor temperature.See figure in chapter "[8-04]" on page 29.

The minimum value for booster heater ONtemperature (TBH ON) is 2°C (fixed) below heat pumpOFF temperature (THP OFF).

NOTE There is no indication available which set point isactive!

NOTE The first set point heating/cooling is the set pointselected on the user interface.- In heating mode the first set point can be a

fixed value or weather dependent.- In cooling mode the first set point is always a

fixed value.

The second set point heating [7-03] should belinked to the heat emitters which requires thehighest set point in heating mode. Example: fancoil unit.

The second set point cooling [7-04] should belinked to the heat emitters which requires thelowest set point in cooling mode. Example: faincoil unit.

The actual second set point heating valuedepends on the selected value of setting [7-03].- In case [7-03]=1~24, the actual second set

point will be first set point heating increased with [7-03] (the maximum is 55°C).In this way the second set point heating is linked to the first set point heating.

- In case [7-03]=25~55, the actual second set point heating is equal to [7-03].

The selection of second set point or first set pointis determined by the terminals (X2M: 1, 2, 4).The second set point has always priority on thefirst set point.

When dual set point control is enabled, heating/coolingselection always has to be done on the user interface.

NOTE It is the responsibility of the installer to make sure nounwanted situations can occur.

It is very important that the water temperature to thefloor heating loops never becomes too high in heatingmode or never too cold in cooling mode. Failure toobserve this rule can result in construction damage ordiscomfort. For example in cooling mode condensationon the floor can occur when water towards the floorheating loops is too cold (dew point).

X2M

1 2 3 4

SP1SP2

SP1 First set point contact

SP2 Second set point contact

Note that when the unit is configured to work with aroom thermostat (refer to "Room thermostatinstallation configuration" on page 21), themaximum running timer will only be taken intoaccount when there is a request for space coolingor space heating. When there is no request forspace cooling or space heating, domestic waterheating by the heat pump will continue until the'heat pump OFF temperature' (see field settings [6]on page 27) is reached. When no room thermostatis installed, the timer is always taken into account.

1 Heat pump domestic water heating mode (1 = active, 0 = not active)

2 Hot water request for heat pump (1 = request, 0 = no request)

t Time

If the outdoor temperature is higher than the field setting towhich parameter [4-02] is set, then field settings ofparameters [8-01], [8-02], and [8-04] are not considered.

t

1

0

1

0

[8-01] [8-02]

[8-00]

Installation manual

28EKHBH/X016BA


[8-03] Booster heater delay time: specifies the start-up timedelay of the booster heater operation when heat pumpdomestic water heating mode is active.

[8-04] Additional running time at [4-02]/[F-01]: specifies theadditional running time on the maximum running time atoutdoor temperature [4-02] or [F-01]. See figure below.

[9] Heating and cooling set point ranges

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

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

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

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

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

[9-04] Overshoot setting: defines how much the watertemperature may rise above the set point before thecompressor stops. This function is only applicable in heatingmode.

When heat pump is active in domestic waterheating mode, the delay time of boosterheater is [8-03].

When heat pump is not active in domesticwater heating mode, the delay time is 20 min.

The delay timer starts from booster heater ONtemperature (TBH ON)

1 Booster heater operation (1 = active, 0 = not active)

2 Heat pump domestic water heating mode (1 = active, 0 = not active)

3 Hot water request for booster heater (1 = request, 0 = no request)

4 Hot water request for heat pump (1 = request, 0 = no request)

t Time

By adapting the booster heater delay time versus themaximum running time, an optional balance can befound between the energy efficiency and the heat uptime.

However, if the booster heater delay time is set toohigh, it might take a long time before the domestic hotwater reaches its set temperature upon domestic hotwater mode request.

The purpose of [8-03] is to delay the booster heater inrelation with the heat pump operation time in domesticwater heating mode.

The setting [8-03] has only meaning if setting[4-03]=1. Setting [4-03]=0/2/3 limits the boosterheater automatically in relation to heat pumpoperation time in domestic water heating mode.

Take care that [8-03] is always in relation with themaximum running time [8-01].

Example: [4-03]=1

t

1

0

1

0

1

0

[8-03]

3

4

1

0

Energy saving settingsQuick heating settings (default)

[8-01] 20~60 min 30 min

[8-03] [8-01] + 20 min 20 min

Heating Cooling

t Time


anti-recycle time

maximum running time

The full advantage of [8-04] will be applicable if setting[4-03] is not 1.

CAUTION

In case of a floor heating application, it is important tolimit the maximum leaving water temperature atheating operation according to the specifications ofthe floor heating installation.

In case of a floor cooling application, it is important tolimit the minimum leaving water temperature atcooling operation (field setting of parameter [9-03]) to16~18°C to prevent condensation on the floor.

t

TA

t

TA

0

[8-01]

[5-03] [4-02]

[8-02]

[8-01]+[8-04]

0

[8-01]

[F-01] 35°C

[8-02]

[8-01]+[8-04]


Installation manual

29

[A] Quiet mode

This field setting allows to select the desired quiet mode. Two quietmodes are available: quiet mode A and quiet mode B.

In quiet mode A, priority is given to the outdoor unit operating quietlyunder all circumstances. Fan and compressor speed (and thusperformance) will be limited to a certain percentage of the speed atnormal operation. In certain cases, this might result in reducedperformance.

In quiet mode B, quiet operation might be overridden when higherperformance is required. In certain cases, this might result in lessquiet operation of the outdoor unit to meet the requestedperformance.

[A-00] Quiet mode type: defines whether quiet mode A (0) orquiet mode B (2) is selected.

[A-01] Parameter 01: do not change this setting. Leave it setto its default value.

[C] Setup on EKRP1HB digital I/O PCB

Solar priority mode

[C-00] Solar priority mode setting: for information concerningthe EKSOLHW solar kit, refer to the installation manual ofthat kit.

Alarm output logic

[C-01] Alarm output logic: defines the logic of the alarmoutput on the EKRP1HB digital I/O PCB.[C-01]=0, the alarm output will be powered when an alarmoccurs (default).[C-01]=1, the alarm output will not be powered when analarm occurs. This field setting allows for distinction betweendetection of an alarm and detection of a power failure to theunit.

Bivalent operation

Applies only to installations with an auxiliary boiler (alternatingoperation, parallel connected). The purpose of this function is todetermine —based on the outdoor temperature— which heatingsource can/will provide the space heating, either the Daikin indoorunit or an auxiliary boiler.

The field setting "bivalent operation" apply only the indoor unit spaceheating operation and the permission signal for the auxiliary boiler.

When the "bivalent operation" function is enabled, the indoor unit willstop automatically in space heating operation when the outdoortemperature drops below "bivalent ON temperature" and thepermission signal for the auxiliary boiler becomes active.

When the bivalent operation function is disabled, the space heatingby indoor unit is possible at all outdoor temperatures (see operationranges) and permission signal for auxiliary boiler is alwaysdisactivated.

[C-02] Bivalent operation status: defines whether bivalentoperation is enabled (1) or disabled (0).

[C-03] Bivalent ON temperature: defines the outdoortemperature below which the permission signal for theauxiliary boiler will be active (closed, KCR on EKRP1HB) andspace heating by indoor unit will be stopped.

[C-04] Bivalent hysteresis: defines the temperature differencebetween bivalent ON temperature and bivalent OFFtemperature.Permission signal X1–X2 (EKRP1HB)

NOTE Do not set other values than the ones mentioned.

[C-01] Alarm No alarmNo power supply to unit

0 (default)

Closed output Open output Open output

1 Open output Closed output Open output

TA Outdoor temperature

CAUTION

Make sure to observe all rules mentioned inapplication 5 when bivalent operation function isenabled.

Daikin shall not be held liable for any damageresulting from failure to observe this rule.

In case the outdoor unit is single phase, thecombination of setting [4-03]=0/2 with bivalentoperation at low outdoor temperature can resultin domestic hot water shortage.

The bivalent operation function has no impact onthe domestic water heating mode. The domestichot water is still and only heated by the indoorunit.

The permission signal for the auxiliary boiler islocated on the EKRP1HB (digital I/O PCB).When it is activated, the contact X1, X2 is closedand open when it is disactivated. See figure forthe schematic location of this contact.

TA[C-03]

[C-04]

closed

open

YC Y1 Y2 Y3 Y4

X1

X2

X3

X4

OFF ON

X2M

SS1

X1M

Installation manual

30EKHBH/X016BA


[D] Benefit kWh rate power supply/Local shift value weatherdependent

Benefit kWh rate power supply

[D-00] Switching off heaters: Defines which heaters areswitched off when the benefit kWh rate signal of theelectricity company is received.If [D-01]=1 or 2 and the benefit kWh rate signal of theelectricity company is received, following devices will beswitched off:

[D-01] Unit connection to benefit kWh rate power supply:Defines whether or not the outdoor unit is connected to abenefit kWh rate power supply.If [D-01]=0, the unit is connected to a normal power supply(default value).If [D-01]=1 or 2, the unit is connected to a benefit kWh ratepower supply. In this case the wiring requires specificinstallation like explained in "Connection to a benefit kWhrate power supply" on page 19. When parameter [D-01]=1 at the moment that the benefitkWh rate signal is sent by the electricity company, thatcontact will open and the unit will go in forced off mode(1).When parameter [D-01]=2 at the moment that the benefitkWh rate signal is sent by the electricity company, thatcontact will close and the unit will go in forced off mode(2).

Local shift value weather dependent

The local shift value weather dependent field setting is only relevantin case weather dependent set point (see field setting "[1] Weatherdependent set point (heating operation only)" on page 24) isselected.

[D-03] Local shift value weather dependent: determines theshift value of the weather dependent set point aroundoutdoor temperature of 0°C.

[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

[F] Option setup

Pump operation

The pump operation field setting apply to the pump operation logiconly when DIP switch SS2-3 is OFF.

When the pump operation function is disabled the pump will stop ifthe outdoor temperature is higher than the value set by [4-02] or if theoutdoor temperature drops below the value set by [F-01]. When thepump operation is enabled, the pump operation is possible at alloutdoor temperatures. Refer to "Pump operation configuration" onpage 22.

[F-00] Pump operation: specifies wether the pump operationfunction is enabled (1) or disabled (0).

Space cooling permission

[F-01] Space cooling permission temperature: defines theoutdoor temperature below which space cooling is turned off.

Bottom plate heater control

Applies only to installation with an outdoor unit ERLQ or in case theoption bottom plate heater kit is installed.

[F-02] Bottom plate heater ON temperature: defines theoutdoor temperature below which the bottom plate heater willbe activated by indoor unit in order to prevent ice build-up inthe bottom plate of the outdoor unit at lower outdoortemperatures.

[F-03] Bottom plate heater hysteresis: defines thetemperature difference between bottom plate heater ONtemperature and the bottom plate heater OFF temperature.Bottom plate heater

[D-00] Compressor Back up heater Booster heater

0 (default)

Forced off Forced off Forced off

1 Forced off Forced off Permitted

2 Forced off Permitted Forced off

3 Forced off Permitted Permitted

[D-00] settings 1, 2 and 3 are only meaningful if thebenefit kWh rate power supply is of the type thatpower supply is not interrupted,

(1) When the signal is released again, the voltage free contact will close and the unit will restart operation. It is therefore important to leave the auto restart function enabled. Refer to "[3] Auto restart" on page 25.

(2) When the signal is released again, the voltage free contact will open and the unit will restart operation. It is therefore important to leave the auto restart function enabled. Refer to "[3] Auto restart" on page 25.

Tt Target water temperature


range Range

local shift value

Local shift value

[1-00], [1-01], [1-02], [1-03]

Applicable field setting of the weather dependent set point [1]

TA

Tt

[1-03]

[1-00] 0°C [1-01]

[1-02]

local shift value

range

[D-03]Outdoor temperature range

(TA) Local shift value

0 — —

1–2°C~2°C

2

2 4

3–4°C~4°C

2

4 4

NOTE [E-03] and [E-04] readouts are not permanentlyrefreshed. Temperature readouts are updatedafter looping through the field setting first codesagain only.

This function is only valid for EKHBX when spacecooling is selected.


CAUTION

The bottom plate heater is controlled via X14A. Make sure[F-04] is correctly set.

TA[F-02]

[F-03]

ON

OFF


Installation manual

31

Functionality of X14A

[F-04] Functionality of X14A: specifies if the logic of X14Afollows the output signal for the solar kit model (EKSOLHW)EKHBH/X_AA/AB (0) or if the logic of X14A follows theoutput for the bottom plate heater (1).

NOTE Independent from field setting [F-04], the contactX3-X4 (EKRP1HB) follows the logic of the outputsignal for the solar kit model (EKSOLHW). See figurebelow for the schematic location of this contact.

YC Y1 Y2 Y3 Y4

X1

X2

X3

X4

OFF ON

X2M

SS1

X1M

Installation manual

32EKHBH/X016BA


Field settings table

First code

Second code Setting name

Installer setting at variance with default valueDefault value Range Step UnitDate Value Date Value

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

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 70 40~80 5 °C

04 Interval 10 5~60 5 min

3 Auto restart

00 Status 0 (ON) 0/1 — —

4 Backup/booster heater operation and space heating off temperature

00 Status 1 (ON) 0/1 — —

01 Priority 0 (OFF) 0/1/2 — —

02 Space heating off temperature 35 14~35 1 °C

03 Booster heater operation 3 0/1/2/3 — —

04 Not applicable 2 Read only — —

5 Equilibrium temperature and space heating priority temperature

00 Equilibrium temperature status 1 (ON) 0/1 — —

01 Equilibrium temperature 0 –15~35 1 °C

02 Space heating priority status 0 (OFF) 0/1 — —

03 Space heating priority temperature 0 –15~20 1 °C

04 Set point correction for domestic hot water temperature 10 0~20 1 °C

6 DT for heat pump domestic water heating mode

00 Start 2 2~20 1 °C

01 Stop 2 0~10 1 °C


7 DT for booster heater and dual set point control

00 Domestic hot water step length 0 0~4 1 °C

01 Hysteresis value booster heater 2 2~40 1 °C

02 Dual set point control status 0 0/1 — —

03 Second set point heating 10 1~24 / 25~55 1 °C

04 Second set point cooling 7 5~22 1 °C

8 Domestic water heating mode timer

00 Minimum running time 5 0~20 1 min

01 Maximum running time 30 5~60 5 min

02 Anti-recycling time 3 0~10 0.5 hour

03 Booster heater delay time 50 20~95 5 min

04 Additional running time at [4-02]/[F-01] 95 0~95 5 min


Installation manual

33

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 Overshoot setting(a) 1 1~4 1 °C

A Quiet mode

00 Quiet mode type 0 0/2 — —

01 Parameter 01 3 — — —




b Not applicable






C Setup on EKRP1HB digital I/O PCB

00 Solar priority mode setting 0 0/1 1 —

01 Alarm output logic 0 0/1 — —

02 Bivalent operation status 0 0/1 — —

03 Bivalent ON temperature 0 –25~25 1 °C

04 Bivalent hysteresis 3 2~10 1 °C

D Benefit kWh rate power supply/local shift value weather dependent

00 Switching off heaters 0 0/1/2/3 — —

01 Unit connection to benefit kWh rate power supply 0 (OFF) 0/1/2 — —

02 Not applicable. Do not change the default value. 0 — — —

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

E Unit information readout

00 Software version Read only — — —

01 EEPROM version Read only — — —

02 Unit model identification Read only — — —

03 Liquid refrigerant temperature Read only — — °C

04 Inlet water temperature Read only — — °C

F Option setup

00 Pump operation 0 0/1 — —

01 Space cooling permission temperature 20 10~35 1 °C

02 Bottom plate heater ON temperature 3 3~10 1 °C

03 Bottom plate heater hysteresis 5 2~5 1 °C

04 Functionality of X14A. 1 0/1 — —

(a) Only possible to modify the first 3 minutes after power ON.

First code

Second code Setting name

Installer setting at variance with default valueDefault value Range Step UnitDate Value Date Value

Installation manual

34EKHBH/X016BA


TEST RUN AND FINAL CHECK

The installer is obliged to verify correct operation of the indoor andoutdoor unit after installation.

Final check

Before switching on the unit, read following recommendations:

When the complete installation and all necessary settings havebeen carried out, close all front panels of the unit and refit theindoor unit cover.

The service panel of the switch box may only be opened by alicensed electrician for maintenance purposes.

Automatic test run

When the unit is put into operation (by pressing the y button) forthe first time, the system will automatically perform a test run incooling mode. The test run will take up to 3 minutes, during which nospecific indication is given on the user interface.

During the automatic test run, it is important to ensure that the watertemperature does not drop below 10°C, which might activate thefreeze-up protection and thereby prevent the test run to finish.Should the water temperature drop below 10°C, press the h/cbutton so the h icon is displayed. This will activate the backup heaterduring the automatic test run and raise the water temperaturesufficiently.

If the automatic test run has ended successfully, the system willautomatically resume normal operation.

If there are misconnections or malfunctions, an error code will bedisplayed on the user interface. To resolve the error codes, see "Errorcodes" on page 38.

Test run operation (manual)

If required, the installer can perform a manual test run operation atany time to check correct operation of cooling, heating and domesticwater heating.

Procedure

1 Push the z button 4 times so the t icon will be displayed.

2 Depending on the indoor unit model, heating operation, coolingoperation or both must be tested as follows (when no action isperformed, the user interface will return to normal mode after 10seconds or by pressing the z button once):

• To test the heating operation push the h/c button so the hicon is displayed. To start the test run operation press they button.

• To test the cooling operation push the h/c button so the cicon is displayed. To start the test run operation press they button.

• To test the domestic water heating operation push the v

button. The test run operation will start without pressing they button.

3 The test run operation will end automatically after 30 minutes orwhen reaching the set temperature. The test run operation canbe stopped manually by pressing the z button once. If there aremisconnections or malfunctions, an error code will be displayedon the user interface. Otherwise, the user interface will return tonormal operation.

4 To resolve the error codes, see "Error codes" on page 38.

MAINTENANCE AND SERVICE

In order to ensure optimal availability of the unit, a number of checksand inspections on the unit and the field wiring have to be carried outat regular intervals.

This maintenance should be carried out by your local technician.

To execute the maintenance activities as mentioned below, it is onlyrequired to remove the indoor unit cover. See "Opening the indoorunit" on page 9.

Maintenance activities

NOTE When the outdoor unit is put into pump down operation(see the outdoor unit installation manual), theautomatic test run flag will be cleared. The next timethe system is put into operation, the automatic test runwill be executed again.

After finishing automatic test run or power ON/OFF, thecompressor will operate in the selected operationmode and continue for certain time (set point on theremote controller is overruled during this operation).

To display the last resolved error code, push the z button1 time. Push the z button again 4 times to return tonormal mode.

NOTE It is not possible to perform a test run if a forcedoperation from the outdoor unit is in progress. Shouldforced operation be started during a test run, the testrun will be aborted.

DANGER: ELECTRIC SHOCK

Before carrying out any maintenance or repair activity,always switch off the circuit breaker on the supplypanel, remove the fuses or open the protectiondevices of the unit.

Make sure that before starting any maintenance orrepair activity, also the power supply to the outdoorunit is switched off.

Do not touch live parts for 10 minutes after the powersupply is turned off because of high voltage risk.

The heater of the compressor may operate even instop mode.

Please note that some sections of the electriccomponent box are hot.

Make sure you do not touch a conductive section.

Do not rinse the indoor unit. This may cause electricshocks or fire.

When service panels are removed, live parts can beeasily touched by accident.Never leave the unit unattended during installation orservicing when service panel is removed.

Play it safe!

Touch a metal part by hand (such as the stop valve) inorder to eliminate static electricity and to protect the PCBbefore performing service.

DANGER

Do not touch water pipes during and immediately afteroperation as the pipes may be hot. Your hand may sufferburns. To avoid injury, give the piping time to return tonormal temperature or be sure to wear proper gloves.


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35

The described checks must be executed at least once a year.

1 Water pressure

Check if the water pressure is above 1 bar. If necessary addwater.

2 Water filter

Clean the water filter.

3 Water pressure relief valve

Check for correct operation of the pressure relief valve byturning the red knob on the valve counter-clockwise:

If you do not hear a clacking sound, contact your local dealer.

In case the water keeps running out of the unit, close boththe water inlet and outlet shut-off valves first and then contactyour local dealer.

4 Pressure relief valve hose

Check that the pressure relief valve hose is positionedappropriately to drain the water.If the (optional) drain pan kit is installed, make sure that thepressure relief valve hose end is positioned in the drain pan.

5 Backup heater vessel insulation cover

Check that the backup heater insulation cover is fastened tightlyaround the backup heater vessel.

6 Domestic hot water tank pressure relief valve (field supply)

Applies only to installations with a domestic hot water tank.Check for correct operation of the pressure relief valve on thedomestic hot water tank.

7 Domestic hot water tank booster heater


It is advisable to remove lime buildup on the booster heater toextend its life span, especially in regions with hard water. To doso, drain the domestic hot water tank, remove the booster heaterfrom the domestic hot water tank and immerse in a bucket (orsimilar) with lime-removing product for 24 hours.

8 Indoor unit switch box

Carry out a thorough visual inspection of the switch box andlook for obvious defects such as loose connections ordefective wiring.

Check for correct operation of contactors K1M, K2M, K3M,K5M (applications with domestic hot water tank only) andK4M by use of an ohmmeter. All contacts of these contactorsmust be in open position.

TROUBLESHOOTING

This section provides useful information for diagnosing andcorrecting certain troubles which may occur in the unit.

This troubleshooting and related corrective actions may only becarried out by your local technician.

General guidelines

Before starting the troubleshooting procedure, carry out a thoroughvisual inspection of the unit and look for obvious defects such asloose connections or defective wiring.

When a safety device was activated, stop the unit and find out whythe safety device was activated before resetting it. Under nocircumstances safety devices may be bridged or changed to a valueother than the factory setting. If the cause of the problem cannot befound, call your local dealer.

If the pressure relief valve is not working correctly and is to bereplaced, always reconnect the flexible hose attached to the pressurerelief valve, to avoid water dripping out of the unit!

WARNING




DANGER

When carrying out an inspection on the switch box of theunit, always make sure that the main switch of the unit isswitched off.

NOTE For problems related to the optional solar kit fordomestic water heating, refer to the troubleshooting inthe installation manual of that kit.

DANGER

Do not touch water pipes during and immediately afteroperation as the pipes may be hot. Your hand may sufferburns. To avoid injury, give the piping time to return tonormal temperature or be sure to wear proper gloves.

WARNING




Installation manual

36EKHBH/X016BA


General symptoms

Symptom 1: The unit is turned on (y LED is lit) but the unit is not heating or cooling as expected

Symptom 2: The unit is turned on but the compressor is not starting (space heating or domestic water heating)

Symptom 3: Pump is making noise (cavitation)

Symptom 4: The water pressure relief valve opens

Symptom 5: The water pressure relief valve leaks

Symptom 6: The user interface displays "nnnn" when pressing certain buttons

Symptom 7: Space heating capacity shortage at low outdoor temperatures

POSSIBLE CAUSES CORRECTIVE ACTION

The temperature setting is not correct.

Check the controller set point.

The water flow is too low. • Check that all shut off valves of the water circuit are completely open.

• Check if the water filter needs cleaning.

• Make sure there is no air in the system (purge air).

• Check on the manometer that there is sufficient water pressure. The water pressure must be >1 bar (water is cold)

• Check that the pump speed setting is on the highest speed.

• Make sure that the expansion vessel is not broken.

• Check that the resistance in the water circuit is not too high for the pump (refer to "Setting the pump speed" on page 23).

The water volume in the installation is too low.

Make sure that the water volume in the installation is above the minimum required value (refer to "Checking the water volume and expansion vessel pre-pressure" on page 14).


The unit must start up out of its operation range (the water temperature is too low).

In case of low water temperature, the system utilizes the backup heater to reach the minimum water temperature first (15°C).• Check that the backup heater power

supply is correct.• Check that the backup heater

thermal fuse is closed.• Check that the backup heater

thermal protector is not activated.• Check that the backup heater

contactors are not broken.

The benefit kWh rate power supply settings and electrical connections do not match.

If [D-01]=1 or 2, the wiring requires specific installation like illustrated in "Connection to a benefit kWh rate power supply" on page 19. Other correctly installed configurations are possible, but are to be specific for the type of benefit kWh rate power supply type at this specific site.

The benefit kWh rate signal was sent by the electricity company.

Wait for the power to return.


There is air in the system. Purge air.

Water pressure at pump inlet is too low.

• Check on the manometer that there is sufficient water pressure. The water pressure must be >1 bar (water is cold).

• Check that the manometer is not broken.

• Check that the expansion vessel is not broken.

• Check that the setting of the pre-pressure of the expansion vessel is correct (refer to "Setting the pre-pressure of the expansion vessel" on page 15).


The expansion vessel is broken. Replace the expansion vessel.

The water volume in the installation is too high.

Make sure that the water volume in the installation is under the maximum allowed value (refer to "Checking the water volume and expansion vessel pre-pressure" on page 14).


Dirt is blocking the water pressure relief valve outlet.

Check for correct operation of the pressure relief valve by turning the red knob on the valve counter clockwise:• If you do not hear a clacking sound,

contact your local dealer.• In case the water keeps running out

of the unit, close both the water inlet and outlet shut-off valves first and then contact your local dealer.


The current permission level is set to a level that prevents using the pressed button.

Change the "user permission level" field setting [0-00], see "Field settings" on page 24.


Backup heater operation is not activated.

Check that the "backup heater operation status" field setting [4-00] is turned on, see "Field settings" on page 24.Check whether or not the thermal protector of the backup heater has been activated (refer to Main components, "Backup heater thermal protector" on page 10 for location of the reset button).Check if booster heater and backup heater are configured to operate simultaneously (field setting [4-01], see "Field settings" on page 24)Check whether or not the thermal fuse of the backup heater is blown (refer to "Main components", "Backup heater thermal fuse" on page 10 for location of the reset button).

The backup heater equilibrium temperature has not been configured correctly.

Raise the 'equilibrium temperature' field setting [5-01] to activate backup heater operation at a higher outdoor temperature.

Too much heat pump capacity is used for heating domestic hot water (applies only to installations with a domestic hot water tank).

Check that the 'space heating priority temperature' field settings are configured appropriately:• Make sure that the 'space heating

priority status' field setting [5-02] is enabled.

• Raise the 'space heating priority temperature' field setting [5-03] to activate booster heater operation at a higher outdoor temperature.


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37

Error codes

When a safety device is activated, the user interface LED will beflashing, and an error code will be displayed.

A list of all errors and corrective actions can be found in the tablebelow.

Reset the safety by turning the unit OFF and back ON.

In case this procedure for resetting the safety is not successful,contact your local dealer.

Instruction to turn the unit OFF

User interface mode (heating/cooling =)

Domestic water heating mode (w)

Push the y button

Push the v button

ON ON 1 time 1 time

ON OFF 1 time —

OFF ON — 1 time

OFF OFF — —

Error code Failure cause Corrective action

80 Inlet water temperature thermistor failure (inlet water thermistor broken)

Contact your local dealer.

81 Outlet water temperature thermistor failure (outlet water temperature sensor broken)


89 Water heat exchanger freeze-up failure (due to water flow too low)

Refer to error code 7H.

Water heat exchanger freeze-up failure (due to refrigerant shortage)


7H Flow failure (water flow too low or no water flow at all, minimum required water flow is 16 l/min)

• Check that all shut off valves of the water circuit are completely open.

• Check if the water filter needs cleaning.

• Check that the unit is operating within its operating range (refer to "Technical specifications" on page 40).

• Also refer to "Charging water" on page 15.

• Make sure there is no air in the system (purge air).

• Check on the manometer that there is sufficient water pressure. The water pressure must be >1 bar (water is cold).

• Check that the pump speed setting is on the highest speed.

• Make sure that the expansion vessel is not broken.

• Check that the resistance in the water circuit is not too high for the pump (refer to "Setting the pump speed" on page 23).

• If this error occurs at defrost operation (during space heating or domestic water heating), make sure that the backup heater power supply is wired correctly and that fuses are not blown.

• If EKHWSU version of domestic hot water tank is installed, check if the setting of the additional thermostat in the tank switch box is correct (≥50°C).

• Check that the pump fuse (FU2) and PCB fuse (FU1) are not blown.

8H Outlet water temperature of indoor unit too high (>65°C)

• Check that the contactor of the electric backup heater is not short circuited.

• Check that the outlet water thermistor is giving the correct read out.

A1 Indoor unit PCB defective Contact your local dealer.

A5 Too low (during cooling operation) or too high (during heating operation) refrigerant temperature (measured by R3T)


AA Backup heater thermal protector is open

Reset the thermal protector by pressing the reset button (refer to "Main components" on page 10 for location of the reset button)

Check the reset button of the thermal protector. If both the thermal protector and the controller are reset, but the AA error code persists, the backup heater thermal fuse has blown.


AC Booster heater thermal protector is open (applies only to installations with a domestic hot water tank)

Reset the thermal protector

Secondary thermal protector is open (applies only to units with a EKHWSU domestic hot water tank installed)

Reset the thermal protector

C0 Flow switch failure (flow switch remains closed while pump is stopped)

Check that the flow switch is not clogged with dirt.

C4 Heat exchanger thermistor failure (heat exchanger temperature sensor broken)


E1 Outdoor unit PCB defective Contact your local dealer.

E3 Abnormal high pressure Check that the unit is operating within its operating range (refer to "Technical specifications" on page 40).Contact your local dealer.

E4 Actuation of low pressure sensor Check that the unit is operating within its operating range (refer to "Technical specifications" on page 40).Contact your local dealer.

E5 Overload activation of compressor

Check that the unit is operating within its operating range (refer to "Technical specifications" on page 40).Contact your local dealer.

E7 Fan lock failure (fan is locked) Check if the fan is not obstructed by dirt. If the fan is not obstructed, contact your local dealer.

E9 Malfunction of electronic expansion valve


EC Domestic hot water temperature too high (>89°C)

• Check that the contactor of the electric booster heater is not short circuited.

• Check that the domestic hot water thermistor is giving the correct read out.

F3 Too high discharge temperature (e.g. due to outdoor coil blockage)

Clean the outdoor coil. If the coil is clean, contact your local dealer.

H3 Malfunctioning HPS system Contact your local dealer.

H9 Outdoor temperature thermistor failure (outdoor thermistor is broken)


HC Domestic hot water tank thermistor failure


J1 Malfunction of pressure sensor Contact your local dealer.

J3 Discharge pipe thermistor failure Contact your local dealer.

J5 Suction pipe outdoor unit thermistor failure


J6 Aircoil thermistor frost detection failure


J7 Aircoil thermistor mean temperature failure


J8 Liquid pipe outdoor unit thermistor failure


L4 Electric component failure Contact your local dealer.





Installation manual

38EKHBH/X016BA


LC Electric component failure Contact your local dealer.

P1 PCB failure Contact your local dealer.

P4 Electric component failure Contact your local dealer.

PJ Failure of capacity setting Contact your local dealer.

U0 Refrigerant failure (due to refrigerant leak)


U2 Main circuit voltage failure Contact your local dealer.

U4 Communication failure Contact your local dealer.



UA Communication failure Contact your local dealer.



Installation manual

39

TECHNICAL SPECIFICATIONS

General

Electrical specifications

Heating/cooling models (EKHBX) Heating only models (EKHBH)

Nominal capacity• cooling Refer to the Technical Data• heating Refer to the Technical DataDimensions H x W x D 922 x 502 x 361 922 x 502 x 361Weight• machine weight 48 kg 48 kg• operation weight 61 kg 61 kgConnections

• water inlet/outlet 1-1/4" MBSP(a) 1-1/4" MBSP(a)

• water drain hose nipple hose nipple• refrigerant liquid side Ø9.5 mm (3/8 inch) Ø9.5 mm (3/8 inch)• refrigerant gas side Ø15.9 mm (5/8 inch) Ø15.9 mm (5/8 inch)Expansion vessel• volume 10 l 10 l• maximum working pressure (MWP) 3 bar 3 barPump• type water cooled water cooled• no. of speed 3 3Sound pressure level Refer to technical data Refer to technical dataInternal water volume 5.5 l 5.5 lPressure relief valve water circuit 3 bar 3 barOperation range - water side• heating +15~+55°C +15~+55°C• cooling +5~+22°C —Operation range - air side• heating –20~+35°C –20~+35°C• cooling +10~+46°C —• domestic hot water by heat pump –20~+35°C –20~+35°C

(a) MBSP = Male British Standard Pipe

Heating/cooling models (EKHBX) Heating only models (EKHBH)

Standard unit (power supply via outdoor unit)• power supply 230 V 50 Hz 1PBackup heater• power supply See "Connection of the backup heater power supply" on page 18• maximum running current See "Connection of the backup heater power supply" on page 18

Installation manual

40EKHBH/X016BA


NOTES NOTES

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