Daikin ERHQ011-014-016BA, ERLQ011-014-016CA, EHBH/X16CA Installation manuals

Installer reference guide

Daikin Altherma - Low Temperature Split

+

ERHQ011-014-016BA ERLQ011-014-016CA EHBH/X16CA

	Installer reference guide	English
	Daikin Altherma - Low Temperature Split

Table of contents

		Table of contents							7.1.1	To open the indoor unit ..............................................	25
								7.2	7.1.2	To open the switch box cover of the indoor unit ........	25
									Mounting the indoor unit ...........................................................		25
									7.2.1	To install the indoor unit .............................................	25
1			About the documentation			3		7.3	7.2.2	To install the drain pan kit ..........................................	26
									Connecting the water piping .....................................................		26
			1.1	About this document .................................................................		3			7.3.1	To connect the water piping .......................................	26
2			General safety precautions			3			7.3.2	To fill the water circuit ................................................	27
									7.3.3	To fill the domestic hot water tank .............................	27
			2.1	About the documentation ..........................................................		3		7.4	7.3.4	To insulate the water piping .......................................	27
				2.1.1	Meaning of warnings and symbols ............................	3			Connecting the electrical wiring ................................................		27
			2.2	For the installer .........................................................................		3			7.4.1	About electrical compliance .......................................	27
				2.2.1	General ......................................................................	3			7.4.2	To connect the electrical wiring on the indoor unit .....	28
				2.2.2	Installation site ...........................................................	4			7.4.3	To connect the main power supply ............................	28
				2.2.3	Refrigerant .................................................................	4			7.4.4	To connect the backup heater power supply .............	29
				2.2.4	Water .........................................................................	4			7.4.5	To connect the user interface ....................................	30
				2.2.5	Electrical ....................................................................	4			7.4.6	To connect the shut-off valve .....................................	31
3			About the box			5			7.4.7	To connect the electrical meters ................................	32
									7.4.8	To connect the domestic hot water pump ..................	32
			3.1	Indoor unit .................................................................................		5			7.4.9	To connect the alarm output ......................................	32
				3.1.1	To unpack the indoor unit ..........................................	5			7.4.10	To connect the space cooling/heating ON/OFF
				3.1.2	To remove the accessories from the indoor unit ........	5				output .........................................................................	32
		4 About the units and options				6			7.4.11	To connect the changeover to external heat source ..	32
									7.4.12	To connect the power consumption digital inputs ......	33
			4.1	Identification ..............................................................................		6		7.5	Finishing the indoor unit installation ..........................................		33
			4.2	4.1.1	Identification label: Indoor unit ...................................	6			7.5.1	To fix the user interface cover to the indoor unit ........	33
				Possible combinations of units and options ..............................		6			7.5.2	To close the indoor unit .............................................	33
				4.2.1	List of options for indoor unit ......................................	6	8	Configuration			33
				4.2.2	Possible combinations of indoor unit and outdoor
					unit .............................................................................	7		8.1	Overview: Configuration ...........................................................		33
				4.2.3	Possible combinations of indoor unit and domestic				8.1.1	To connect the PC cable to the switch box ................	33
					hot water tank ............................................................	7			8.1.2	To access the most used commands ........................	34
5			Application guidelines			8			8.1.3	To copy the system settings from the first to the
										second user interface ................................................	34
			5.1	Overview: Application guidelines ..............................................		8			8.1.4	To copy the language set from the first to the second
			5.2	Setting up the space heating/cooling system ...........................		8				user interface .............................................................	34
				5.2.1	Single room ................................................................	8			8.1.5	Quick wizard: Set the system layout after first power
				5.2.2	Multiple rooms – One LWT zone ...............................	10		8.2		ON .............................................................................	34
			5.3	5.2.3	Multiple rooms – Two LWT zones .............................	11			Basic configuration ...................................................................		35
				Setting up an auxiliary heat source for space heating ..............		13			8.2.1	Quick wizard: Language / time and date ...................	35
			5.4	Setting up the domestic hot water tank .....................................		14			8.2.2	Quick wizard: Standard ..............................................	35
				5.4.1	System layout – Integrated DHW tank .......................	14			8.2.3	Quick wizard: Options ................................................	37
				5.4.2	System layout – Standalone DHW tank .....................	14			8.2.4	Quick wizard: Capacities (energy metering) ..............	39
				5.4.3	Selecting the volume and desired temperature for				8.2.5	Space heating/cooling control ....................................	39
					the DHW tank ............................................................	15			8.2.6	Domestic hot water control ........................................	42
				5.4.4	Setup and configuration – DHW tank ........................	15		8.3	8.2.7	Contact/helpdesk number ..........................................	43
				5.4.5	Combination: Standalone DHW tank + Solar panels .	16			Advanced configuration/optimization ........................................		44
				5.4.6	DHW pump for instant hot water ................................	16			8.3.1	Space heating/cooling operation: advanced ..............	44
			5.5	5.4.7	DHW pump for disinfection ........................................	16			8.3.2	Domestic hot water control: advanced .......................	47
				Setting up the energy metering .................................................		16			8.3.3	Heat source settings ..................................................	51
				5.5.1	Produced heat ...........................................................	16		8.4	8.3.4	System settings .........................................................	52
				5.5.2	Consumed energy .....................................................	17			Menu structure: Overview .........................................................		56
				5.5.3	Normal kWh rate power supply ..................................	17		8.5	Menu structure: Overview installer settings ..............................		57
			5.6	5.5.4	Preferential kWh rate power supply ...........................	17	9	Commissioning			58
				Setting up the power consumption control ................................		18
				5.6.1	Permanent power limitation .......................................	18		9.1	Overview: Commissioning ........................................................		58
				5.6.2	Power limitation activated by digital inputs ................	18		9.2	Checklist before test run ...........................................................		58
				5.6.3	Power limitation process ............................................	19		9.3	Air purge function ......................................................................		58
			5.7	Setting up an external temperature sensor ...............................		19			9.3.1	To perform a manual air purge ..................................	58
6			Preparation			20			9.3.2	To perform an automatic air purge ............................	59
									9.3.3	To interrupt air purge .................................................	59
			6.1	Preparing installation site ..........................................................		20		9.4	To perform a test run ................................................................		59
			6.2	6.1.1	Installation site requirements of the indoor unit .........	20		9.5	To perform an actuator test run ................................................		59
				Preparing water piping ..............................................................		20		9.6	9.5.1	Possible actuator test runs ........................................	59
				6.2.1	Water circuit requirements .........................................	20			Underfloor heating screed dryout .............................................		59
				6.2.2	Formula to calculate the expansion vessel pre-				9.6.1	To program an underfloor heating screed dryout
					pressure .....................................................................	22				schedule ....................................................................	60
				6.2.3	To check the water volume ........................................	22			9.6.2	To start an underfloor heating screed dryout .............	60
				6.2.4	Changing the pre-pressure of the expansion vessel .	22			9.6.3	To readout the status of an underfloor heating
			6.3	6.2.5	To check the water volume: Examples ......................	23				screed dryout .............................................................	60
				Preparing electrical wiring .........................................................		23			9.6.4	To interrupt an underfloor heating screed dryout .......	60
				6.3.1	About preparing electrical wiring ................................	23	10 Hand-over to the user				60
				6.3.2	About preferential kWh rate power supply .................	23
				6.3.3	Overview of electrical connections except external		11 Maintenance and service				60
					actuators ....................................................................	23
				6.3.4	Overview of electrical connections for external and			11.1	Maintenance safety precautions ...............................................		60
					internal actuators .......................................................	24		11.2	11.1.1	Opening the indoor unit .............................................	61
	7		Installation			25			Checklist for yearly maintenance for indoor unit .......................		61
							12 Troubleshooting				61
			7.1	Opening the units ......................................................................		25
								12.1	General guidelines ....................................................................		61
		Installer reference guide								ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA
2										Daikin Altherma - Low Temperature Split
										4P313776-1C – 2012.11

1 About the documentation

12.2 Solving problems based on symptoms .....................................

62

12.2.1Symptom: The unit is NOT heating or cooling as

expected ....................................................................

62

12.2.2Symptom: The compressor does NOT start (space

	heating or domestic water heating) ............................	62
12.2.3 Symptom: The pump is making noise (cavitation) .....		62
12.2.4	Symptom: The pressure relief valve opens ...............	62
12.2.5	Symptom: The water pressure relief valve leaks .......	63

12.2.6Symptom: The space is NOT sufficiently heated at

low outdoor temperatures ..........................................

63

12.2.7Symptom: The pressure at the tapping point is

temporarily unusual high ............................................

63

12.2.8Symptom: Decoration panels are pushed away due

		to a swollen tank ........................................................	63
	12.2.9 Symptom: Tank disinfection function is NOT
12.3		completed correctly (AH - error) ..................................	63
	Solving problems based on error codes ...................................		63
	12.3.1	Error codes: Overview ...............................................	64
13 Glossary		.............................................................	64
14 Technical ...................................................data			66
14.1	Dimensions .................................................and service space		66
14.2	14.1.1 ...............Dimensions and service space: Indoor unit		66
	Components .............................................................................		67
	14.2.1 ...........................................	Components: Indoor unit	67
14.3	14.2.2 .......................Components: Switch box (indoor unit)		67
	Functional .................................................................diagrams		68
14.4	14.3.1 .................................Functional diagram: Indoor unit		68
	Piping ..........................................................................diagram		69
14.5	14.4.1 ........................................Piping diagram: Indoor unit		69
	Wiring ..........................................................................diagram		70
14.6	14.5.1 ................Wiring diagram – components: Indoor unit		70
	Technical ............................................................specifications		76
14.7	14.6.1 ..........................Technical specifications: Indoor unit		76
	Operation ........................................................................range		78
	14.7.1 .......................Operation range: Heating and cooling		78
	14.7.2 ........................Operation range: Domestic hot water		79
14.8	14.7.3 ...................................................	Drain pan necessity	80
	Sound ........................................................................spectrum		81
14.9	14.8.1 ...................................Sound spectrum: Outdoor unit		81
	ESP curve .................................................................................		82
14.10	14.9.1 ...............................................ESP curve: Indoor unit		82
	Performance .............................................................................		83
14.11	Combination .....................................................................table		86

1About the documentation

1.1About this document

Target audience

Authorized installers

Documentation set

This document is part of a documentation set. The complete set consists of:

Document	Contains…	Format
General	Safety instructions that	Paper (in the box of the
safety	you must read before	indoor unit)
precautions	installing
Indoor unit	Installation instructions
installation
manual
Outdoor unit	Installation instructions	Paper (in the box of the
installation		outdoor unit)
manual

Document	Contains…	Format
Installer	Preparation of the	CD/DVD (in the box of the
reference	installation, technical	indoor unit)
guide	specifications, good
	practices, reference data,
	…
Addendum	Additional info about how	Paper (in the box of the
book for	to install optional	indoor unit)
optional	equipment	CD/DVD (in the box of the
equipment
		indoor unit)

Latest revisions of the supplied documentation may be available on the regional Daikin website or via your dealer.

2General safety precautions

2.1About the documentation

▪The original documentation is written in English. All other languages are translations.

▪The precautions described in this document cover very important topics, follow them carefully.

▪All activities described in the installation manual must be performed by an authorized installer.

2.1.1Meaning of warnings and symbols

DANGER

Indicates a situation that results in death or serious injury.

DANGER: RISK OF ELECTROCUTION

Indicates a situation that could result in electrocution.

DANGER: RISK OF BURNING

Indicates a situation that could result in burning because of extreme hot or cold temperatures.

WARNING

Indicates a situation that could result in death or serious injury.

CAUTION

Indicates a situation that could result in minor or moderate injury.

NOTICE

Indicates a situation that could result in equipment or property damage.

INFORMATION

Indicates useful tips or additional information.

2.2For the installer

2.2.1General

If you are not sure how to install or operate the unit, contact your dealer.

NOTICE

Improper installation or attachment of equipment or accessories could result in electric shock, short-circuit, leaks, fire or other damage to the equipment. Only use accessories, optional equipment and spare parts made or approved by Daikin.

ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA	Installer reference guide
Daikin Altherma - Low Temperature Split	3
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2 General safety precautions

WARNING

Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).

CAUTION

Wear adequate personal protective equipment (protective gloves, safety glasses,…) when installing, maintaining or servicing the system.

WARNING

Tear apart and throw away plastic packaging bags so that nobody, especially children, can play with them. Possible risk: suffocation.

DANGER: RISK OF BURNING

▪Do NOT touch the refrigerant piping, water piping or internal parts during and immediately after operation. It could be too hot or too cold. Give it time to return to normal temperature. If you must touch it, wear protective gloves.

▪Do NOT touch any accidental leaking refrigerant.

NOTICE

Provide adequate measures to prevent that the unit can be used as a shelter by small animals. Small animals that make contact with electrical parts can cause malfunctions, smoke or fire.

CAUTION

Do NOT touch the air inlet or aluminum fins of the unit.

NOTICE

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

▪ Do NOT sit, climb or stand on the unit.

In accordance with the applicable legislation, it might be necessary to provide a logbook with the product containing at least: information on maintenance, repair work, results of tests, stand-by periods,…

Also, at least, following information must be provided at an accessible place at the product:

▪Instructions for shutting down the system in case of an emergency

▪Name and address of fire department, police and hospital

▪Name, address and day and night telephone numbers for obtaining service

In Europe, EN378 provides the necessary guidance for this logbook.

2.2.2Installation site

▪Provide sufficient space around the unit for servicing and air circulation.

▪Make sure the installation site withstands the unit’s weight and vibration.

▪Make sure the area is well ventilated.

▪Make sure the unit is level.

Do NOT install the unit in the following places:

▪In potentially explosive atmospheres.

▪In places where there is machinery that emits electromagnetic waves. Electromagnetic waves may disturb the control system, and cause malfunction of the equipment.

▪In places where there is a risk of fire due to the leakage of flammable gases (example: thinner or gasoline), carbon fibre, ignitable dust.

▪In places where corrosive gas (example: sulphurous acid gas) is produced. Corrosion of copper pipes or soldered parts may cause the refrigerant to leak.

2.2.3Refrigerant

NOTICE

Make sure refrigerant piping installation complies with applicable legislation. In Europe, EN378 is the applicable standard.

NOTICE

Make sure the field piping and connections are not subjected to stress.

WARNING

During tests, NEVER pressurize the product with a pressure higher than the maximum allowable pressure (as indicated on the nameplate of the unit).

WARNING

Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks, ventilate the area immediately. Possible risks:

▪Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency.

▪Toxic gas may be produced if refrigerant gas comes into contact with fire.

WARNING

Always recover the refrigerants. Do NOT release them directly into the environment. Use a vacuum pump to evacuate the installation.

2.2.4Water

NOTICE

Make sure water quality complies with EU directive 98/83 EC.

2.2.5Electrical

DANGER: RISK OF ELECTROCUTION

▪Turn OFF all power supply before removing the switch box cover, connecting electrical wiring or touching electrical parts.

▪Disconnect the power supply for more than 1 minute, and measure the voltage at the terminals of main circuit capacitors or electrical components before servicing. The voltage must be less than 50 V DC before you can touch electrical components. For the location of the terminals, see the wiring diagram.

▪Do NOT touch electrical components with wet hands.

▪Do NOT leave the unit unattended when the service cover is removed.

WARNING

If not factory installed, a main switch or other means for disconnection, having a contact separation in all poles providing full disconnection under overvoltage category III condition, shall be installed in the fixed wiring.

Installer reference guide	ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA
4	Daikin Altherma - Low Temperature Split
	4P313776-1C – 2012.11

3 About the box

WARNING

▪Only use copper wires.

▪All field wiring must be performed in accordance with the wiring diagram supplied with the product.

▪NEVER squeeze bundled cables and make sure they do not come in contact with the piping and sharp edges. Make sure no external pressure is applied to the terminal connections.

▪Make sure to install earth wiring. Do NOT earth the unit to a utility pipe, surge absorber, or telephone earth. Incomplete earth may cause electrical shock.

▪Make sure to use a dedicated power circuit. NEVER use a power supply shared by another appliance.

▪Make sure to install the required fuses or circuit breakers.

▪Make sure to install an earth leakage protector. Failure to do so may cause electric shock or fire.

▪When installing the earth leakage protector, make sure it is compatible with the inverter (resistant to high frequency electric noise) to avoid unnecessary opening of the earth leakage protector.

Install power cables at least 1 meter away from televisions or radios to prevent interference. Depending on the radio waves, a distance of

1 meter may not be sufficient.

WARNING

▪After finishing the electrical work, confirm that each electrical component and terminal inside the electrical components box is connected securely.

▪Make sure all covers are closed before starting up the unit.

3About the box

▪At delivery, the unit must be checked for damage. Any damage must be reported immediately to the carrier’s claims agent.

▪Bring the packed unit as close as possible to its final installation position to prevent damage during transport.

3.1Indoor unit

3.1.1To unpack the indoor unit

A

A

a Installation manual, operation manual, CD/DVD

INFORMATION

Do NOT throw away the upper cardboard cover. On the inside of the cardboard cover, the installation pattern is printed.

3.1.2To remove the accessories from the indoor unit

The installation manual indoor unit, operation manual, and CD/DVD are located in the upper part of the box. Follow the procedure below to remove the other accessories.

1Remove the tape.

2Tilt the bottom side of the front panel upwards and remove it.

3Remove the accessories.

ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA	Installer reference guide
Daikin Altherma - Low Temperature Split	5
4P313776-1C – 2012.11

4 About the units and options

h

				j
		f
		g
a	b	c	d	e
1x	1x	1x	1x	1x

f				g		h		i		j
	1x				2x		1x		1x		2x
	k		l
		1x		4x

a General safety precautions

b Addendum book for optional equipment c Indoor unit installation manual

d Operation manual e CD/DVD

fUser interface kit: user interface, 4 fixing screws, 2 plugs

g Shut-off valve

h User interface cover

i Top plate of indoor unit j Screws

k Sound plate

l Screws for fixing sound plate

4Remove the accessories k+l. These accessories are located at the bottom of the packaging.

4About the units and options

4.1Identification

NOTICE

When installing or servicing several units at the same time, make sure NOT to switch the service panels between different models.

4.1.1Identification label: Indoor unit

Location

Model identification

Example: E HB H 04 CA 3V

	Code		Description
E		European model
HB		HB=Wall-mounted indoor unit
H		▪	H=Heating only
		▪	X=Heating/cooling
04		Capacity class:
		▪	04=4 kW
		▪	08=8 kW
		▪	16=16 kW
CA		Series
3V		Backup heater model
		▪	3V
		▪	9W

4.2Possible combinations of units and options

4.2.1List of options for indoor unit

User interface (EKRUCAL1, EKRUCAL2)

The user interface is delivered as an accessory with the unit. An additional user interface is optionally available.

The additional user interface can be connected:

▪To have both:

▪control close to the indoor unit

▪room thermostat functionality in the principal space to be heated

▪To have an interface containing other languages

The additional user interface EKRUCAL1 contains the 6 common languages: English, German, French, Dutch, Italian, Spanish.

The additional user interface EKRUCAL2 contains other languages: English, Swedish, Norwegian, Czech, Turkish, Portuguese.

Languages on the user interface can be uploaded by PC software or copied from an user interface to the other.

For installation instructions, see "7.4.5 To connect the user interface" on page 30.

Room thermostat (EKRTWA, EKRTR1)

You can connect an optional room thermostat to the indoor unit. This thermostat can either be wired (EKRTWA) or wireless (EKRTR1).

For installation instructions, see the installation manual of the room thermostat and addendum book for optional equipment.

Remote sensor for wireless thermostat (EKRTETS)

You can use a wireless indoor temperature sensor (EKRTETS) only in combination with the wireless thermostat (EKRTR1).

For installation intructions, see the installation manual of the room thermostat and addendum book for optional equipment.

Digital I/O PCB (EKRP1HB)

The digital I/O PCB is required to provide following signals:

▪Alarm output

▪Space heating/cooling On/OFF output

▪Changeover to external heat source

Installer reference guide	ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA
6	Daikin Altherma - Low Temperature Split
	4P313776-1C – 2012.11

4 About the units and options

▪Only for EHVH/X16 models: Control signal for bottom plate heater kit EKBPHTH16A.

For installation instructions, see the installation manual of the digital I/O PCB and addendum book for optional equipment.

Demand PCB (EKRP1AHTA)

To enable the power saving consumption control by digital inputs you must install the demand PCB.

For installation instructions, see the installation manual of the demand PCB and addendum book for optional equipment.

Remote indoor sensor (KRCS01-1)

By default the internal user interface sensor will be used as room temperature sensor.

As an option the remote indoor sensor can be installed to measure the room temperature on another location.

For installation instructions, see the installation manual of the remote indoor sensor and addendum book for optional equipment.

INFORMATION

▪The remote indoor sensor can only be used in case the user interface is configured with room thermostat functionality.

▪You can only connect either the remote indoor sensor or the remote outdoor sensor.

Remote outdoor sensor (EKRSCA1)

By default the sensor inside the outdoor unit will be used to measure the outdoor temperature.

As an option the remote outdoor sensor can be installed to measure the outdoor temperature on another location (e.g. to avoid direct sunlight) to have an improved system behaviour.

For installation instructions, see the installation manual of the remote outdoor sensor.

INFORMATION

You can only connect either the remote indoor sensor or the remote outdoor sensor.

PC configurator (EKPCCAB*)

The PC cable makes a connection between the switch box of the indoor unit and a PC. It gives the possibility to upload different language files to the user interface and indoor parameters to the indoor unit. For the available language files, contact your local dealer.

The software and corresponding operating instructions are available on Daikin Extranet.

For installation instructions, see the installation manual of the PC cable.

Drain pan kit (EKHBDPCA2)

The drain pan is required to drain accumulated condensation from the indoor unit. It is required during low temperature cooling operation of the indoor unit and when the leaving water temperature is <18°C.

For installation of this option into the indoor unit, refer to the installation manual delivered with this option kit.

Solar kit (EKSOLHW)

The solar kit is required to connect the solar application with the domestic hot water tank.

For installation, see the installation manual of the solar kit and addendum book for optional equipment.

Domestic hot water tank

The domestic hot water tank can be connected to the indoor unit for providing domestic hot water.

The domestic hot water tank is available in 2 types:

▪Stainless steel tank (EKHWS and EKHWSU (only for UK)) There are 3 types available: 150, 200, and 300 liter.

▪Enamelled tank (EKHWE and EKHWET (wallmounted version)) There are 3 types of EKHWE: 150, 200, and 300 liter.

There is 1 type of EKHWET: 150 liter.

For installation instructions, see the installation manual of the domestic hot water tank and addendum book for optional equipment.

4.2.2Possible combinations of indoor unit and outdoor unit

Outdoor unit			Indoor unit
	EHBH16CA3V	EHBX16CA3V		EHBH16CA9W	EHBX16CA9W
ERHQ011BAV3	O	O		O	O
ERHQ014BAV3	O	O		O	O
ERHQ016BAV3	O	O		O	O
ERLQ011CAV3	O	O		O	O
ERLQ014CAV3	O	O		O	O
ERLQ016CAV3	O	O		O	O
ERHQ011BAW1	O	O		O	O
ERHQ014BAW1	O	O		O	O
ERHQ016BAW1	O	O		O	O
ERLQ011CAW1	O	O		O	O
ERLQ014CAW1	O	O		O	O
ERLQ016CAW1	O	O		O	O

4.2.3Possible combinations of indoor unit and domestic hot water tank

Indoor unit		Domestic hot water tank
	EKHWS	EKHWSU	EKHWE	EKHWET
EHBH16CA3V	O	O	O	O
EHBX16CA3V	O	O	O	O
EHBH16CA9W	O	O	O	O

ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA	Installer reference guide
Daikin Altherma - Low Temperature Split	7
4P313776-1C – 2012.11

5 Application guidelines

Indoor unit		Domestic hot water tank
	EKHWS	EKHWSU	EKHWE	EKHWET
EHBX16CA9W	O	O	O	O

5Application guidelines

5.1Overview: Application guidelines

The purpose of the application guidelines is to give a glance of the possibilities of the Daikin heat pump system.

NOTICE

▪ The illustrations in the application guidelines are meant for reference only, and are NOT to be used as detailed hydraulic diagrams. The detailed hydraulic dimensioning and balancing are NOT shown, and are the responsibility of the installer.

▪For more information about the configuration settings to optimize heat pump operation, see "8 Configuration" on page 33.

This chapter contains applications guidelines for:

▪Setting up the space heating/cooling system

▪Setting up an auxiliary heat source for space heating

▪Setting up the domestic hot water tank

▪Setting up the energy metering

▪Setting up the power consumption

▪Setting up an external temperature sensor

aUser interface used as room thermostat

▪The under floor heating or radiators are directly connected to the indoor unit.

▪The room temperature is controlled by the user interface, which is used as room thermostat. Possible installations:

▪User interface (standard equipment) installed in the room and used as room thermostat

▪User interface (standard equipment) installed at the indoor unit and used for control close to the indoor unit + user interface (optional equipment EKRUCAL) installed in the room and used as room thermostat

Configuration

		Setting	Value
	Unit temperature control:		2 (RT control): Unit operation is
	▪	#: [A.2.1.7]	decided based on the ambient
			temperature of the user interface.
	▪	Code: [C-07]
	Number of water temperature		0 (1 LWT zone): Main
	zones:
	▪	#: [A.2.1.8]
	▪	Code: [7-02]

Benefits

▪Cost effective. You do NOT need an additional external room thermostat.

5.2Setting up the space heating/cooling system

The Daikin heat pump system supplies leaving water to heat emitters in one or more rooms.

Because the system offers a wide flexibility to control the temperature in each room, you need to answer the following questions first:

▪How many rooms are heated (or cooled) by the Daikin heat pump system?

▪Which heat emitter types are used in each room and what is their design leaving water temperature?

Once the space heating/cooling requirements are clear, Daikin recommends to follow the setup guidelines below.

▪Highest comfort and efficiency. The smart room thermostat functionality can decrease or increase the desired leaving water temperature based on the actual room temperature (modulation). This results in:

▪Stable room temperature matching the desired temperature (higher comfort)

▪Less ON/OFF cycles (more quiet, higher comfort and higher efficiency)

▪Lowest possible leaving water temperature (higher efficiency)

▪Easy. You can easily set the desired room temperature via the user interface:

▪For your daily needs, you can use preset values and schedules.

▪To deviate from your daily needs, you can temporarily overrule the preset values and schedules, use the holiday mode…

5.2.1Single room

Under floor heating or radiators – Wired room thermostat

Setup

A

B

A

A Main leaving water temperature zone

B One single room

Under floor heating or radiators – Wireless room thermostat

Setup

A

B

A

B

A Main leaving water temperature zone B One single room

a Receiver for wireless external room thermostat b Wireless external room thermostat

Installer reference guide	ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA
8	Daikin Altherma - Low Temperature Split
	4P313776-1C – 2012.11

5 Application guidelines

▪The under floor heating or radiators are directly connected to the indoor unit.

▪The room temperature is controlled by the wireless external room thermostat (optional equipment EKRTR1).

Configuration

		Setting		Value
	Unit temperature control:		1 (Ext RT control): Unit operation
	▪	#: [A.2.1.7]	is decided by the external
			thermostat.
	▪	Code: [C-07]
	Number of water temperature		0 (1 LWT zone): Main
	zones:
	▪	#: [A.2.1.8]
	▪	Code: [7-02]
	External room thermostat for the		Configure according to the setup:
	main zone:		▪ 1 (Thermo ON/OFF): When
	▪	#: [A.2.2.4]	the used	external		room
	▪	Code: [C-05]	thermostat	or heat		pump
			convector can only send a
			thermo ON/OFF condition. No
			separation between heating or
			cooling demand.
			▪ 2 (C/H request): When the
			used external room thermostat
			can send a separate heating/
			cooling	thermo	ON/OFF
			condition.

Benefits

▪Wireless. The Daikin external room thermostat is available in a wireless version.

▪Efficiency. Although the external room thermostat only sends

ON/OFF signals, it is specifically designed for the heat pump system.

▪Comfort. In case of under floor heating, the wireless external room thermostat prevents condensation on the floor during cooling operation by measuring the room humidity.

Heat pump convectors

Setup

A

B

A

A Main leaving water temperature zone

B One single room

aRemote controller of the heat pump convectors

▪The heat pump convectors are directly connected to the indoor unit.

▪The desired room temperature is set via the remote controller of the heat pump convectors.

▪The space heating/cooling demand signal is sent to one digital input on the indoor unit (X2M/1 and X2M/4).

▪The space operation mode is sent to the heat pump convectors by one digital output on the indoor unit (X2M/33 and X2M/34).

INFORMATION

When using multiple heat pump convectors, make sure each one receives the infrared signal from the remote controller of the heat pump convectors.

Configuration

		Setting	Value
	Unit temperature control:		1 (Ext RT control): Unit operation
	▪	#: [A.2.1.7]	is decided by the external
			thermostat.
	▪	Code: [C-07]
	Number of water temperature		0 (1 LWT zone): Main
	zones:
	▪	#: [A.2.1.8]
	▪	Code: [7-02]
	External room thermostat for the		1 (Thermo ON/OFF): When the
	main zone:		used external room thermostat or
	▪	#: [A.2.2.4]	heat pump convector can only
			send a thermo ON/OFF
	▪	Code: [C-05]
			condition. No separation between
			heating or cooling demand.

Benefits

▪Cooling. The heat pump convector offers, besides heating capacity, also excellent cooling capacity.

▪Efficiency. Optimal energy efficiency because of the interlink function.

▪Stylish.

Combination: Under floor heating + Heat pump convectors

▪Space heating is provided by:

▪The under floor heating

▪The heat pump convectors

▪Space cooling is provided by the heat pump convectors only. The under floor heating is shut off by the shut-off valve.

Setup

A

B

M1

A

A Main leaving water temperature zone

B One single room

aRemote controller of the heat pump convectors

▪The heat pump convectors are directly connected to the indoor unit.

▪A shut-off valve (field supply) is installed before the under floor heating to prevent condensation on the floor during cooling operation.

▪The desired room temperature is set via the remote controller of the heat pump convectors.

▪The space heating/cooling demand signal is sent to one digital input on the indoor unit (X2M/1 and X2M/4)

ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA	Installer reference guide
Daikin Altherma - Low Temperature Split	9
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5 Application guidelines

▪The space operation mode is sent by one digital output (X2M/33 and X2M/34) on the indoor unit to:

▪The heat pump convectors

▪The shut-off valve

Configuration

		Setting	Value
	Unit temperature control:		1 (Ext RT control): Unit operation
	▪	#: [A.2.1.7]	is decided by the external
			thermostat.
	▪	Code: [C-07]
	Number of water temperature		0 (1 LWT zone): Main
	zones:
	▪	#: [A.2.1.8]
	▪	Code: [7-02]
	External room thermostat for the		1 (Thermo ON/OFF): When the
	main zone:		used external room thermostat or
	▪	#: [A.2.2.4]	heat pump convector can only
			send a thermo ON/OFF
	▪	Code: [C-05]
			condition. No separation between
			heating or cooling demand.

Benefits

▪Cooling. Heat pump convectors provide, besides heating capacity, also excellent cooling capacity.

▪Efficiency. Under floor heating has the best performance with Altherma LT.

▪Comfort. The combination of the two heat emitter types provides:

▪The excellent heating comfort of the under floor heating

▪The excellent cooling comfort of the heat pump convectors

5.2.2Multiple rooms – One LWT zone

If only one leaving water temperature zone is needed because the design leaving water temperature of all heat emitters is the same, you do NOT need a mixing valve station (cost effective).

Example: If the heat pump system is used to heat up one floor where all the rooms have the same heat emitters.

Under floor heating or radiators – Thermostatic valves

If you are heating up rooms with under floor heating or radiators, a very common way is to control the temperature of the main room by using a thermostat (this can either be the user interface or an external room thermostat), while the other rooms are controlled by so-called thermostatic valves, which open or close depending on the room temperature.

Setup

A
B	C
	T
	A

A Main leaving water temperature zone B Room 1

C Room 2

a User interface

▪The under floor heating of the main room is directly connected to the indoor unit.

▪The room temperature of the main room is controlled by the user interface used as thermostat.

▪A thermostatic valve is installed before the under floor heating in each of the other rooms.

INFORMATION

Mind situations where the main room can be heated by another heating source. Example: Fireplaces.

Configuration

		Setting	Value
	Unit temperature control:		2 (RT control): Unit operation is
	▪	#: [A.2.1.7]	decided based on the ambient
			temperature of the user interface.
	▪	Code: [C-07]
	Number of water temperature		0 (1 LWT zone): Main
	zones:
	▪	#: [A.2.1.8]
	▪	Code: [7-02]

Benefits

▪Cost effective.

▪Easy. Same installation as for one room, but with thermostatic valves.

Under floor heating or radiators – Multiple external room thermostats

Setup

A

B	C
	B
M1	M2
A	A

A Main leaving water temperature zone B Room 1

C Room 2

a External room thermostat

bBypass valve

▪For each room, a shut-off valve (field supplied) is installed to avoid leaving water supply when there is no heating or cooling demand.

▪A bypass valve must be installed to make water recirculation possible when all shut-off valves are closed.

▪The user interface connected to the indoor unit decides the space operation mode. Mind that the operation mode on each room thermostat must be set to match the indoor unit.

▪The room thermostats are connected to the shut-off valves, but do NOT have to be connected to the indoor unit. The indoor unit will supply leaving water all the time, with the possibility to program a leaving water schedule.

Installer reference guide	ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA
10	Daikin Altherma - Low Temperature Split
	4P313776-1C – 2012.11

5 Application guidelines

Configuration

		Setting	Value
	Unit temperature control:		0 (LWT control): Unit operation is
	▪	#: [A.2.1.7]	decided based on the leaving
			water temperature.
	▪	Code: [C-07]
	Number of water temperature		0 (1 LWT zone): Main
	zones:
	▪	#: [A.2.1.8]
	▪	Code: [7-02]

Benefits

Compared with under floor heating or radiators for one room:

▪Comfort. You can set the desired room temperature, including schedules, for each room via the room thermostats.

Heat pump convectors

Setup

A

B C

A

A

A Main leaving water temperature zone

B Room 1

C Room 2

aRemote controller of the heat pump convectors

▪The desired room temperature is set via the remote controller of the heat pump convectors.

▪The user interface connected to the indoor unit decides the space operation mode.

▪The heating or cooling demand signals of each heat pump convector are connected in parallel to the digital input on the indoor unit (X2M/1 and X2M/4). The indoor unit will only supply leaving water temperature when there is an actual demand.

INFORMATION

To increase comfort and performance, Daikin recommends to install the valve kit option EKVKHPC on each heat pump convector.

Configuration

		Setting	Value
	Unit temperature control:		1 (Ext RT control): Unit operation
	▪	#: [A.2.1.7]	is decided by the external
			thermostat.
	▪	Code: [C-07]
	Number of water temperature		0 (1 LWT zone): Main
	zones:
	▪	#: [A.2.1.8]
	▪	Code: [7-02]

Benefits

Compared with heat pump convectors for one room:

▪ Comfort. You can set the desired room temperature, including schedules, for each room via the remote controller of the heat pump convectors.

Combination: Under floor heating + Heat pump convectors

Setup

A
B	C
M1
M1
	B
	A

A Main leaving water temperature zone B Room 1

C Room 2

a External room thermostat

bRemote controller of the heat pump convectors

▪For each room with heat pump convectors: The heat pump convectors are directly connected to the indoor unit.

▪For each room with under floor heating: Two shut-off valves (field supply) are installed before the under floor heating:

▪A shut-off valve to prevent hot water supply when the room has no heating demand

▪A shut-off valve to prevent condensation on the floor during cooling operation of the rooms with heat pump convectors

▪For each room with heat pump convectors: The desired room temperature is set via the remote controller of the heat pump convectors.

▪For each room with under floor heating: The desired room temperature is set via the external room thermostat (wired or wireless).

▪The user interface connected to the indoor unit decides the space operation mode. Mind that the operation mode on each external room thermostat and remote controller of the heat pump convectors must be set to match the indoor unit.

INFORMATION

To increase comfort and performance, Daikin recommends to install the valve kit option EKVKHPC on each heat pump convector.

Configuration

		Setting	Value
	Unit temperature control:		0 (LWT control): Unit operation is
	▪	#: [A.2.1.7]	decided based on the leaving
			water temperature.
	▪	Code: [C-07]
	Number of water temperature		0 (1 LWT zone): Main
	zones:
	▪	#: [A.2.1.8]
	▪	Code: [7-02]

5.2.3Multiple rooms – Two LWT zones

If the heat emitters selected for each room are designed for different leaving water temperatures, you can use different leaving water temperature zones (maximum 2).

In this document:

ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA	Installer reference guide
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5 Application guidelines

▪Main zone = Zone with the lowest design temperature in heating, and the highest design temperature in cooling

▪Additional zone = The other zone

CAUTION

When there is more than one leaving water zone, you must always install a mixing valve station in the main zone to decrease (in heating)/increase (in cooling) the leaving water temperature when the additional zone has demand.

Typical example:

Room (zone)			Heat emitters: Design
			temperature
Living room (main zone)	Under floor heating:
	▪	In heating: 35°C
	▪	In	cooling:	20°C	(only
		refreshment, no		real	cooling
		allowed)
Bed rooms (additional zone)	Heat pump convectors:
	▪	In heating: 45°C
	▪	In cooling: 12°C

Setup

A

B C

		A	A
		D
	C	E
D
			B

A Additional leaving water temperature zone B Room 1

C Room 2

D Main leaving water temperature zone E Room 3

a Remote controller of the heat pump convectors b User interface

c Mixing valve station

d Pressure regulating valve

INFORMATION

A pressure regulating valve should be implemented before the mixing valve station. This is to guarantee the correct water flow balance between the main leaving water temperature zone and the additional leaving water temperature zone in relation to the required capacity of both water temperature zones.

▪For the main zone:

▪A mixing valve station is installed before the under floor heating.

▪The pump of the mixing valve station is controlled by the ON/OFF signal on the indoor unit (X2M/5 and X2M/7; normal closed shut-off valve output).

▪The room temperature is controlled by the user interface, which is used as room thermostat.

▪For the additional zone:

▪The heat pump convectors are directly connected to the indoor unit.

▪The desired room temperature is set via the remote controller of the heat pump convectors for each room.

▪The heating or cooling demand signals of each heat pump convector are connected in parallel to the digital input on the indoor unit (X2M/1 and X2M/4). The indoor unit will only supply the desired additional leaving water temperature when there is an actual demand.

▪The user interface connected to the indoor unit decides the space operation mode. Mind that the operation mode on each remote controller of the heat pump convectors must be set to match the indoor unit.

Configuration

		Setting	Value
	Unit temperature control:		2 (RT control): Unit operation is
	▪	#: [A.2.1.7]	decided based on the ambient
			temperature of the user interface.
	▪	Code: [C-07]
			Note:
			▪ Main room = user interface
			used as room thermostat
			functionality
			▪ Other rooms = external room
			thermostat functionality
	Number of water temperature		1 (2 LWT zones): Main +
	zones:		additional
	▪	#: [A.2.1.8]
	▪	Code: [7-02]
	In case of heat pump convectors:		1 (Thermo ON/OFF): When the
	External room thermostat for the		used external room thermostat or
	additional zone:		heat pump convector can only
			send a thermo ON/OFF
	▪	#: [A.2.2.5]
			condition. No separation between
	▪	Code: [C-06]	heating or cooling demand.
	Shut-off valve output		Set to follow the thermo demand
			of the main zone.
	Shut-off valve		If the main zone must be shut off
			during cooling mode to prevent
			condensation on the floor, set it
			accordingly.
	At the mixing valve station		Set the desired main leaving
			water temperature for heating
			and/or cooling.

Benefits

▪Comfort.

▪The smart room thermostat functionality can decrease or increase the desired leaving water temperature based on the actual room temperature (modulation).

▪The combination of the two heat emitter systems provides the excellent heating comfort of the under floor heating, and the excellent cooling comfort of the heat pump convectors.

▪Efficiency.

▪Depending on the demand, the indoor unit supplies different leaving water temperature matching the design temperature of the different heat emitters.

▪Under floor heating has the best performance with Altherma LT.

Installer reference guide	ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA
12	Daikin Altherma - Low Temperature Split
	4P313776-1C – 2012.11

5 Application guidelines

5.3Setting up an auxiliary heat source for space heating

▪Space heating can be done by: ▪ The indoor unit

▪ An auxiliary boiler (field supply) connected to the system

▪When the room thermostat requests heating, the indoor unit or the auxiliary boiler starts operating depending on the outdoor temperature (status of the changeover to external heat source). When the permission is given to the auxiliary boiler, the space heating by the indoor unit is turned OFF.

▪Bivalent operation is only possible for space heating, NOT for domestic hot water production. Domestic hot water is always produced by the DHW tank connected to the indoor unit.

INFORMATION

▪ During heating operation of the heat pump, the heat pump operates to achieve the desired temperature set via the user interface. When weather-dependent operation is active, the water temperature is determined automatically depending on the outdoor temperature.

▪During heating operation of the auxiliary boiler, the auxiliary boiler operates to achieve the desired water temperature set via the auxiliary boiler controller.

Setup

▪Integrate the auxiliary boiler as follows: Only for EHBH/X

a	b	c	d e f	g	h	j
				M
					h
					i
			f		k
				l	i
				n
						FHL1
						FHL2
					m	FHL3
Only for EHVH/X
a	b	c	de g	f	h	j
			M
				f	h
					i
					k
				l	i
			n
						FHL1
						FHL2
				m		FHL3
	a	Outdoor unit
	b	Indoor unit
	c	Heat exchanger
	d	Backup heater
	e	Pump
	f	Shut-off valve
	g	Motorised 3 way valve (delivered with DHW tank)
	h	Non-return valve (field supply)
	i	Shut-off valve (field supply)
	j	Collector (field supply)
	k	Auxiliary boiler (field supply)
	l	Aquastat valve (field supply)
	m	DHW tank (EHBH/X: option)
	n	Heat exchanger coil
FHL1...3		Under floor heating

ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA	Installer reference guide
Daikin Altherma - Low Temperature Split	13
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5 Application guidelines

NOTICE

▪ Make sure the auxiliary boiler and its integration in the system complies with applicable legislation.

▪Daikin is NOT responsible for incorrect or unsafe situations in the auxiliary boiler system.

▪Make sure the return water to the heat pump does NOT exceed 55°C. To do so:

▪Set the desired water temperature via the auxiliary boiler controller to maximum 55°C.

▪ Install an aquastat valve in the return water flow of the heat pump.

▪Set the aquastat valve to close above 55°C and to open below 55°C.

▪Install non-return valves.

▪Make sure to only have one expansion vessel in the water circuit. An expansion vessel is already premounted in the indoor unit.

▪Install the digital I/O PCB (option EKRP1HB).

▪Connect X1 and X2 (changeover to external heat source) on the PCB to the auxiliary boiler thermostat.

▪To setup the heat emitters, see "5.2 Setting up the space heating/ cooling system" on page 8.

Configuration

Via the user interface (quick wizard):

▪Set the use of a bivalent system as external heat source.

▪Set the bivalent temperature and hysteresis.

NOTICE

▪ Make sure the bivalent hysteresis has enough differential to prevent frequent changeover between indoor unit and auxiliary boiler.

▪Because the outdoor temperature is measured by the outdoor unit air thermistor, install the outdoor unit in the shadow so that it is NOT influenced or turned ON/OFF by direct sunlight.

▪Frequent changeover may cause corrosion of the auxiliary boiler. Contact the manufacturer of the auxiliary boiler for more information.

Changeover to external heat source decided by an auxiliary contact

▪Only possible in external room thermostat control AND one leaving water temperature zone (see "5.2 Setting up the space heating/cooling system" on page 8).

▪The auxiliary contact can be:

▪An outdoor temperature thermostat

▪An electricity tariff contact

▪A manually operated contact

▪…

▪Setup: Connect the following field wiring:

L

H

COM

INDOOR

INDOOR/AUTO/BOILER

BTI

X2M

1

2

3

4

X

Y

A

K1A

K2A

N

K1A

K2A

BTI Boiler thermostat input

A Auxiliary contact (normal closed)

H Heating demand room thermostat (optional)

K1A	Auxiliary relay for activation of indoor unit (field
K2A	supply)
	Auxiliary relay for activation of boiler (field supply)
Indoor	Indoor unit
Auto	Automatic
Boiler	Boiler

NOTICE

▪ Make sure the auxiliary contact has enough differential or time delay to prevent frequent changeover between indoor unit and auxiliary boiler.

▪If the auxiliary contact is an outdoor temperature thermostat, install the thermostat in the shadow so that it is NOT influenced or turned ON/OFF by direct sunlight.

▪Frequent changeover may cause corrosion of the auxiliary boiler. Contact the manufacturer of the auxiliary boiler for more information.

5.4Setting up the domestic hot water tank

The DHW tank can be:

▪Integrated in the indoor unit

▪Installed standalone as option

5.4.1System layout – Integrated DHW tank

Only for EHVH/X.

						UI
a		b c d f				h h	i

M

e

FHL1

FHL2

FHL3

a

g

Outdoor unit

b

Indoor unit

c

Heat exchanger

d

Backup heater

e

Pump

f

Motorised 3 way valve

g

DHW tank

h

Shut-off valve

i

Collector (field supply)

FHL1...3

Under floor heating

UI

User interface

5.4.2System layout – Standalone DHW tank

Only for EHBH/X.

Installer reference guide	ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA
14	Daikin Altherma - Low Temperature Split
	4P313776-1C – 2012.11

5 Application guidelines

a

b c d e f

g

h

M

f

FHL1

i j

FHL2

FHL3

a	Outdoor unit
b	Indoor unit
c	Heat exchanger
d	Backup heater
e	Pump
f	Shut-off valve
g	Motorised 3 way valve
h	Collector (field supply)
i	DHW tank
j	Heat exchanger coil
FHL1...3	Under floor heating

5.4.3Selecting the volume and desired temperature for the DHW tank

People experience water as hot when its temperature is 40°C. Therefore, the DHW consumption is always expressed as equivalent hot water volume at 40°C. However, you can set the DHW tank temperature at a higher temperature (example: 53°C), which is then mixed with cold water (example: 15°C).

Selecting the volume and desired temperature for the DHW tank consists of:

1Determining the DHW consumption (equivalent hot water volume at 40°C).

2Determining the volume and desired temperature for the DHW tank.

Possible DHW tank volumes

Type		Possible volumes
Integrated DHW tank	▪	180 l
	▪	260 l
Standalone DHW tank	▪	150 l
	▪	200 l
	▪	300 l

Energy saving tips

▪If the DHW consumption differs from day to day, you can program a weekly schedule with different desired DHW tank temperatures for each day.

▪The lower the desired DHW tank temperature, the more cost effective. By selecting a larger DHW tank, you can lower the desired DHW tank temperature.

▪The heat pump itself can produce domestic hot water of maximum 55°C (50°C if outdoor temperature is low). The electrical resistance integrated in the heat pump can higher this temperature. However, this consumes more energy. Daikin recommends to set the desired DHW tank temperature below

55°C to avoid using the electrical resistance.

▪The higher the outdoor temperature, the better the performance of the heat pump.

▪If energy prices are the same during the day and the night, Daikin recommends to heat up the DHW tank during the day.

▪If energy prices are lower during the night, Daikin recommends to heat up the DHW tank during the night.

▪When the heat pump produces domestic hot water, it cannot heat up a space. When you need domestic hot water and space heating at the same, Daikin recommends to produce the domestic hot water during the night when there is lower space heating demand.

Determining the DHW consumption

Answer the following questions and calculate the DHW consumption (equivalent hot water volume at 40°C) using the typical water volumes:

Question	Typical water volume
How many showers are needed	1 shower = 10 min x 10 l/min =
per day?	100 l

How many baths are needed per 1 bath = 150 l day?

How much water is needed at the 1 sink = 2 min x 5 l/min = 10 l kitchen sink per day?

Are there any other domestic hot — water needs?

Example: If the DHW consumption of a family (4 persons) per day is as follows:

▪3 showers

▪1 bath

▪3 sink volumes

Then the DHW consumption = (3x100 l) + (1x150 l) + (3x10 l) = 480 l

Determining the volume and desired temperature for the DHW tank

Formula			Example
V1 = V2 + V2 x (T2−40) / (40−T1)	If:
	▪ V2 = 180 l
	▪	T2	= 54°C
	▪	T1	= 15°C
	Then V1 = 280 l
V2 = V1 x (40−T1) / (T2−T1)	If:
	▪ V1 = 480 l
	▪	T2	= 54°C
	▪	T1	= 15°C
	Then V2 = 307 l

V1: DHW consumption (equivalent hot water volume at 40°C)

V2: Required DHW tank volume if only heated once

T2: DHW tank temperature

T1: Cold water temperature

5.4.4Setup and configuration – DHW tank

▪For large DHW consumptions, you can heat up the DHW tank several times during the day.

▪To heat up the DHW tank to the desired DHW tank temperature, you can use the following energy sources:

▪ Thermodynamic cycle of the heat pump

▪ Electrical backup heater (for integrated DHW tank)

▪ Electrical booster heater (for standalone DHW tank)

▪ Solar panels

ERHQ011~016BA+ERLQ011~016CA + EHBH/X16CA	Installer reference guide
Daikin Altherma - Low Temperature Split	15
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5 Application guidelines

▪For more information about:

▪Optimizing the energy consumption for producing domestic hot water, see "8 Configuration" on page 33.

▪Connecting the electrical wiring of the standalone DHW tank to the indoor unit, see the installation manual of the DHW tank.

▪Connecting the water piping of the standalone DHW tank to the indoor unit, see the installation manual of the DHW tank.

5.4.5Combination: Standalone DHW tank + Solar panels

By connecting the DHW tank to solar panels, the DHW tank can be heated by solar energy.

For installation instructions, see the installation manual of the solar kit and addendum book for optional equipment.

		M
C.4	C		<![if ! IE]> <![endif]>≥0.5 m
			F
	C.3				E
A
					C.1
	C.2
	B	D
a	Solar panels
b	Solar pump station
c	Solar pump	station	controller	with	temperature
	sensors

c1 Tank temperature sensor

c2 Return temperature sensor to solar panels

c3 Supply temperature with flow meter from solar panels

c4 Solar panel temperature sensor d Solar kit

e DHW temperature sensor of the unit

fSolenoid 2-way valve (only for UK). Obligatory for compliance to UK building regulation G3.

Heating system Example of unit

5.4.6DHW pump for instant hot water

Setup

	h
		c
a	i	f
b
		g
a	Indoor unit
b	DHW tank
c	DHW pump
f	Shower
g	Cold water
h	Domestic hot water OUT

iRecirculation connection

▪By connecting a DHW pump, instant hot water can be available at the tap.

▪The DHW pump and the installation are field supply and the responsibility of the installer.

▪For more information about connecting the recirculation connection:

▪for integrated DHW tank, see "7 Installation" on page 25,

▪for separate DHW tank, see installation manual of DHW tank.

Configuration

▪For more information, see "8 Configuration" on page 33.

▪You can program a schedule to control the DHW pump via the user interface. For more information, see the user reference guide.

5.4.7DHW pump for disinfection

Setup

	h
		c
a	i	d	f
b
		e	g
a	Indoor unit
b	DHW tank
c	DHW pump
d	Heater element
e	Non return valve
f	Shower
g	Cold water
h	Domestic hot water OUT

iRecirculation connection

▪The DHW pump and the installation are field supply and the responsibility of the installer.

▪For the integrated DHW tank, the temperature of the DHW tank can be set to maximum 60°C. If applicable legislation requires higher temperature for disinfection, you can connect a DHW pump and heater element as shown above.

▪If applicable legislation requires disinfection of the water piping until the tapping point, you can connect a DHW pump and heater element (if needed) as shown above.

Configuration

The indoor unit can control DHW pump operation. For more information, see "8 Configuration" on page 33.

5.5Setting up the energy metering

▪Via the user interface, you can read out the following energy data: ▪ Produced heat

▪ Consumed energy

▪You can read out the energy data:

▪ For space heating ▪ For space cooling

▪ For domestic hot water production

▪You can read out the energy data: ▪ Per month

▪ Per year

INFORMATION

The calculated produced heat and consumed energy are an estimation, the accuracy cannot be guaranteed.

5.5.1Produced heat

▪Applicable for all models.

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5 Application guidelines

▪The produced heat is calculated internally based on:

▪The leaving and entering water temperature

▪The flow rate

▪The power consumption of the booster heater (if applicable) in the domestic hot water tank

▪Setup and configuration:

▪No additional equipment needed.

▪Only in case a booster heater is present in the system, measure its capacity (resistance measurement) and set the capacity via the user interface. Example: If you measure a booster heater resistance of 17.1 Ω, the capacity of the heater at 230 V is 3100 W.

5.5.2Consumed energy

You can use the following methods to determine the consumed energy:

▪Calculating

▪Measuring

INFORMATION

You cannot combine calculating the consumed energy (example: for backup heater) and measuring the consumed energy (example: for outdoor unit). If you do so, the energy data will be invalid.

Calculating the consumed energy

▪Only applicable for EHBH/X04+08 and EHVH/X04+08.

▪The consumed energy is calculated internally based on:

▪The actual power input of the outdoor unit

▪The set capacity of the backup heater and booster heater

▪The voltage

▪Setup and configuration: To get accurate energy data, measure the capacity (resistance measurement) and set the capacity via the user interface for:

▪The backup heater (step 1 and step 2)

▪The booster heater

Measuring the consumed energy

▪Applicable for all models.

▪Preferred method because of higher accuracy.

▪Requires external power meters.

▪Setup and configuration:

▪For the specifications of each type of meter, see "14 Technical data" on page 66.

▪When using electrical power meters, set the number of pulses/kWh for each power meter via the user interface. Consumed energy data for EHVH/X16 and EHBH/X16 models will only be available if this setting is configured.

INFORMATION

When measuring the electrical power consumption, make sure ALL power input of the system is covered by the electrical power meters.

5.5.3Normal kWh rate power supply

General rule

One power meter that covers the entire system is sufficient.

Setup

Connect the power meter to X5M/7 and X5M/8.

Power meter type

		In case of…		Use a… power meter
	▪	Single-phase outdoor unit		Single-phase
	▪	Backup heater supplied from a
		single-phase grid (i.e. the
		backup heater model is *3V or
		*9W connected to a single-
		phase grid)
	In other cases (i.e. a three-phase			Three-phase
	outdoor unit and/or a *9W
	backup heater model connected
	to a three-phase grid)
Example
		Single-phase power meter		Three-phase power meter

			a				a
		b					b
c		c		c		c	d
d	e	f	g	e	f	g	h
A		B	C	A		B	C

A Outdoor unit	A Outdoor unit
B Indoor unit	B Indoor unit
C DHW tank	C DHW tank
a Electrical cabinet (L1/N)	a Electrical cabinet (L1/L2/L3/N)
b Power meter (L1/N)	b Power meter (L1/L2/L3/N)
c Fuse (L1/N)	c Fuse (L1/L2/L3/N)
d Outdoor unit (L1/N)	d Fuse (L1/N)
e Indoor unit (L1/N)	e Outdoor unit (L1/L2/L3/N)
f Backup heater (L1/N)	f Indoor unit (L1/L2/L3/N)
g Booster heater (L1/N)	g Backup heater (L1/L2/L3/N)
	h Booster heater (L1/N)

Exception

▪You can use a second power meter if:

▪The power range of one meter is insufficient.

▪The electrical meter cannot easily be installed in the electrical cabinet.

▪230 V and 400 V three-phase grids are combined (very uncommon), because of technical limitations of power meters.

▪Connection and setup:

▪Connect the second power meter to X5M/9 and X5M/10.

▪In the software the power consumption data of both meters is added so you do NOT have to set which meter covers which power consumption. You only need to set the number of pulses of each power meter.

▪See "5.5.4 Preferential kWh rate power supply" on page 17 for an example with two power meters.

5.5.4Preferential kWh rate power supply

General rule

▪ Power meter 1: Measures the outdoor unit.

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5 Application guidelines

▪Power meter 2: Measures the rest (i.e. indoor unit, backup heater and optional booster heater).

Setup

▪Connect power meter 1 to X5M/7 and X5M/8.

▪Connect power meter 2 to X5M/9 and X5M/10.

Power meter types

▪Power meter 1: Singleor three-phase power meter according to the power supply of the outdoor unit.

▪Power meter 2:

▪In case of a single-phase backup heater configuration, use a single-phase power meter.

▪In other cases, use a three-phase power meter.

Example

Single-phase outdoor unit with a three-phase backup heater:

		a		b
		c		d
e		f	e
g	h	i	j
A		B	C

A Outdoor unit

B Indoor unit

C DHW tank

aElectrical cabinet (L1/N): Preferential kWh rate power supply

b Electrical cabinet (L1/L2/L3/N): Normal kWh rate power supply

c Power meter (L1/N)

d Power meter (L1/L2/L3/N) e Fuse (L1/N)

f Fuse (L1/L2/L3/N) g Outdoor unit (L1/N)

h Indoor unit (L1/L2/L3/N)

i Backup heater (L1/L2/L3/N)

jBooster heater (L1/N)

5.6Setting up the power consumption control

▪The power consumption control:

▪ Is only applicable for EHBH/X04+08 and EHVH/X04+08.

▪ Allows you to limit the power consumption of the entire system (sum of outdoor unit, indoor unit, backup heater and optional booster heater).

▪ Configuration: Set the power limitation level and how it has to be achieved via the user interface.

▪The power limitation level can be expressed as: ▪ Maximum running current (in A)

▪ Maximum power input (in kW)

▪The power limitation level can be activated: ▪ Permanently

▪ By digital inputs

INFORMATION

Power consumption control CANNOT be used in applications with booster heater.

5.6.1Permanent power limitation

Permanent power limitation is useful to assure a maximum power or current input of the system. In some countries, legislation limits the maximum power consumption for space heating and DHW production. Example: The maximum power input depends on the area of the house and an annual fee has to be paid to the electrical company according to the size of the installed field fuse. By permanently limiting the maximum power or current of the system, you can install smaller field fuses.

NOTICE

When the current control is intended to reduce the installed field fuse sizes, the field fuse will trip to protect the field wires in case of overcurrents caused by the unit. Make sure the selection of the field fuse complies with applicable legislation.

PI

A

DI

	B
	T
Pi	Power input
t	Time
DI	Digital input (power limitation level)
a	Power limitation active
b	Actual power input

Setup and configuration

▪No additional equipment needed.

▪Set the power consumption control settings in [A.6.3.1] via the

user interface (for the description of all settings, see "8 Configuration" on page 33):

▪Select full time limitation mode

▪Select the type of limitation (power in kW or current in A)

▪Set the desired power limitation level

NOTICE

Mind the following guidelines when selecting the desired power limitation level:

▪Set a minimum power consumption of ±3.6 kW to guarantee defrost operation. Otherwise, if defrosting is interrupted several times, the heat exchanger will freeze up.

▪Set a minimum power consumption of ±3 kW to guarantee space heating and DHW production by allowing at least one electrical heater (backup heater step 1 or booster heater).

5.6.2Power limitation activated by digital inputs

Power limitation is also useful in combination with an energy management system.

The power or current of the entire Daikin system is limited dynamically by digital inputs (maximum four steps). Each power limitation level is set via the user interface by limiting one of the following:

▪ Current (in A)

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5 Application guidelines

▪ Power input (in kW)

The energy management system (field supply) decides the activation of a certain power limitation level. Example: To limit the maximum power of the entire house (lighting, domestic appliances, space heating…).

		D
		A
		5
		4
		3
	A8P	2
		1
	B	C
A	B	C
	A	Outdoor unit
	B	Indoor unit
	C	DHW tank
	D	Energy management system
	a	Power limitation activation (4 digital inputs)
	b	Backup heater
	c	Booster heater

PI

	A
DI4
DI3
		B
DI1
	Pi	T
		Power input
	t	Time
	DI	Digital inputs (power limitation levels)
	a	Power limitation active
	b	Actual power input

Setup

▪Demand PCB (option EKRP1AHTA) needed.

▪Maximum four digital inputs are used to activate the corresponding power limitation level:

▪DI1 = weakest limitation (highest energy consumption)

▪DI4 = strongest limitation (lowest energy consumption)

▪For the specification and the connection of the digital inputs, see "14.5 Wiring diagram – components: Indoor unit" on page 70.

Configuration

Set the power consumption control settings in [A.6.3.1] via the user interface (for the description of all settings, see "8 Configuration" on page 33):

▪Select activation by digital inputs.

▪Select the type of limitation (power in kW or current in A).

▪Set the desired power limitation level corresponding to each digital input.

INFORMATION

In case more than 1 digital input is closed (at the same time), the digital input priority is fixed: DI4 priority>…>DI1.

5.6.3Power limitation process

The outdoor unit has better efficiency than the electrical heaters. Therefore, the electrical heaters are limited and turned OFF first. The system limits power consumption in the following order:

1Limits certain electrical heaters.

If… has priority	Then set the heater priority
	via the user interface to…
Domestic hot water production	Booster heater.
	Result: The backup heater will
	be turned OFF first.
Space heating	Backup heater.
	Result: The booster heater will
	be turned OFF first.

2 Turns OFF all electrical heaters.

3Limits the outdoor unit.

4Turns OFF the outdoor unit.

Example

If the configuration is as follows:

▪Power limitation level does NOT allow operation of both booster heater and backup heater (step 1 and step 2).

▪Heater priority = Booster heater.

Then power consumption is limited as follows:

PH

E

D

C

B

A
		CE
A	B	C
	Ph	Produced heat
	Ce	Consumed energy
	A	Outdoor unit
	B	Booster heater
	C	Backup heater
	a	Limited outdoor unit operation
	b	Full outdoor unit operation
	c	Booster heater turned ON
	d	Backup heater step 1 turned ON

eBackup heater step 2 turned ON

5.7Setting up an external temperature sensor

You can connect one external temperature sensor. It can measure the indoor or outdoor ambient temperature. Daikin recommends to use an external temperature sensor in the following cases:

Indoor ambient temperature

▪In room thermostat control, the user interface is used as room thermostat and it measures the indoor ambient temperature. Therefore, the user interface must be installed on a location:

▪Where the average temperature in the room can be detected

▪That is NOT exposed to direct sunlight

▪That is NOT near a heat source

▪That is NOT affected by outside air or air draught because of, for example, door opening/closing

▪If this is NOT possible, Daikin recommends to connect a remote indoor sensor (option KRCS01-1).

▪Setup: For installation instructions, see the installation manual of the remote indoor sensor.

▪Configuration: Select room sensor [A.2.2.B].

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6 Preparation

Outdoor ambient temperature

▪In the outdoor unit, the outdoor ambient temperature is measured. Therefore, the outdoor unit must be installed on a location:

▪At the north side of the house or at the side of the house where the most heat emitters are located

▪That is NOT exposed to direct sunlight

▪If this is NOT possible, Daikin recommends to connect a remote outdoor sensor (option EKRSCA1).

▪Setup: For installation instructions, see the installation manual of the remote indoor sensor.

▪Configuration: Select outdoor sensor [A.2.2.B].

▪During suspend (see "8 Configuration" on page 33), the outdoor unit is turned down to reduce the standby energy losses. As a result, the outdoor ambient temperature is NOT read out.

▪If the desired leaving water temperature is weather dependent, the full time outdoor temperature measurement is important. This is another reason to install the optional outdoor ambient temperature sensor.

INFORMATION

The external outdoor ambient sensor data (either averaged or instantaneous) is used in the weather-dependent control curves and in the automatic heating/cooling changeover logic. To protect the outdoor unit, the internal sensor of the outdoor unit is always used.

6Preparation

6.1Preparing installation site

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

Choose the installation location with sufficient place for carrying the unit in and out of the site.

6.1.1Installation site requirements of the indoor unit

▪Mind the measurement guidelines:

Maximum refrigerant piping length between indoor	75 m(a)
unit and outdoor unit
Minimum refrigerant piping length between indoor	3 m(b)
unit and outdoor unit
Maximum height difference between indoor unit and	30 m
outdoor unit
Maximum distance between the 3 way valve and	3 m
the indoor unit (for installations with domestic hot
water tank)
Maximum distance between the domestic hot water	10 m
tank and the indoor unit (for installations with
domestic hot water tank)

(a)Check the outdoor unit installation manual.

(b)When <5 m, you need to recharge the outdoor unit (check the outdoor unit installation manual).

▪Mind the following spacing installation guidelines:

<![if ! IE]> <![endif]>200				<![if ! IE]> <![endif]>200

10			10			500

<![if ! IE]>

<![endif]>≥1150

(mm)

Do NOT install the unit in places such as:

▪Where there is mist of mineral oil, oil spray or vapour.

Plastic parts may deteriorate, and cause them to fall out or water to leak.

▪Do NOT install the unit in sound sensitive areas (e.g. near a bedroom and the like), so that the operation noise will cause no trouble.

Note: If the sound is measured under actual installation conditions, the measured value will be higher than the sound pressure level mentioned in "14.8 Sound spectrum" on page 81 due to environmental noise and sound reflections.

▪The foundation must be strong enough to bear the weight of the unit. Take the weight of the unit with a domestic hot water tank full of water into account.

Make sure, in the event of a water leak, water cannot cause any damage to the installation space and surroundings.

▪In places with high humidity (max. RH=85%), for example a bathroom.

▪In places where frost is possible. Ambient temperature around the indoor unit should be >5°C.

▪The indoor unit is designed for indoor installation only and for ambient temperatures ranging 5~35°C in cooling mode and 5~30°C in heating mode.

6.2Preparing water piping

6.2.1Water circuit requirements

▪Use the indoor unit only in a closed water system.

Using the system in an open water system will lead to excessive corrosion.

▪The maximum water pressure is 4 bar.

Provide adequate safeguards in the water circuit to ensure that the maximum pressure is NOT exceeded.

▪All installed piping and piping accessories (valve, connections,…) must withstand the following temperatures:

INFORMATION

The following illustration is an example and may NOT match your system layout.

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6 Preparation

65°C

T

a		b c		d e f	g

M

	i
	i
h	HPC1
		HPC2
	i	HPC3
M

		i
	f
		FHL1
	l k	FHL2
		FHL3

89°C

j

a Outdoor unit b Indoor unit

c Heat exchanger d Backup heater e Pump

f Shut-off valve

gMotorised 3-way valve (supplied with the domestic hot water tank)

h	Motorised 2-way valve (field supply)
i	Collector
j	Domestic hot water tank
k	Heat exchanger coil
l	Booster heater
HPC1...3	Heat pump convector (optional)
FHL1...3	Floor heating loop

TRoom thermostat (optional)

▪Make all water piping connections in accordance with the applicable legislation and the outlook diagram that is delivered with the unit, respecting the water inlet and outlet.

▪Do NOT use excessive force when connecting the piping. Deformation of the piping can cause malfunctioning of the unit.

▪Provide drain taps at all low points of the system in order to allow complete drainage of the water circuit.

▪Provide a proper drain for the pressure relief valve to avoid water coming into contact with electrical parts.

▪Provide air vents at all high points of the system, which must also be easily accessible for servicing. An automatic air purge is provided in the indoor unit. Check that the air purge is NOT tightened too much, so that automatic release of air in the water circuit is possible.

▪Only use materials that are compatible with water used in the system and with the materials used in the indoor unit.

▪Check that all components in the field piping can withstand the water pressure and water temperature.

▪When using non-brass metallic piping, insulate the brass and nonbrass properly so that they do NOT make contact with each other.

This to prevent galvanic corrosion.

▪Never use Zn-coated parts in the water circuit. Because the unit's internal water circuit uses copper piping, excessive corrosion may occur.

▪Only use appropriate tooling to handle brass, which is a soft material. If NOT, pipes will get damaged.

▪	Select the water piping diameter in relation to the required water
	flow and the available external static pressure of the pump. See
	"14 Technical data" on page 66 for the external static pressure
	curves of the indoor unit.
▪	You can find the minimum required water flow for the indoor unit
	operation in the following table. When the water flow is lower, flow
	error 7H will be displayed and the indoor unit will be stopped.
Model			Minimum water flow (l/min)
04			5
08+16			11
▪	When using a 3-way valve in the water circuit make sure that the
	domestic hot water circuit and the floor heating circuit is fully
	separated.
▪	When using a 2-way valve or a 3-way valve in the water circuit,
	the maximum change-over time of the valve must be 60 seconds.
▪	It is strongly recommended to install an additional filter on the
	heating water circuit. Especially to remove metallic particles from
	the filed heating piping, it is advised to use a magnetic or cyclone
	filter, which can remove small particles. Small particles may
	damage the unit and will NOT be removed by the standard filter of
	the heat pump system.
▪	If air, moisture or dust gets into the water circuit, problems may
	occur. To prevent this:
	▪ Only use clean pipes
	▪ Hold the pipe end downwards when removing burrs.
	▪ Cover the pipe end when inserting it through a wall, to prevent
	dust and/or particles entering the pipe.
	▪ Use a decent thread sealant to seal connections.
▪	For safety reasons, it is NOT allowed to add any kind of glycol to
	the water circuit.
▪ To avoid stagnation of		water, it is important that the storage
	capacity of the domestic hot water tank meets the daily
	consumption of domestic hot water.
	In cases where during longer periods of time there is no
	consumption of hot water, the equipment must be flushed with
	fresh water before usage.
	The disinfection function provided on the equipment is specified in
	the operation manual of the indoor unit.
▪ It is recommended to		avoid long runs of piping between the
	domestic hot water tank and the hot water end point (shower,
	bath,…) and to avoid dead ends.
▪ The installation must		be in compliance with the applicable
	legislation and may require additional hygienic installation
	measures.
▪	In accordance with the applicable legislation, it may be necessary
	to install thermostatic mixing valves.

▪ Immediately after installation, the domestic hot water tank must be flushed with fresh water. This procedure must be repeated at least once a day the first 5 consecutive days after installation.

▪ In accordance with the applicable legislation, it may be required to connect a recirculation pump in between the hot water end point and the recirculation connection of the domestic hot water tank.

		C
A	B	D
	a	Recirculation connection
	b	Hot water connection
	c	Shower
	d	Recirculation pump

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6 Preparation

6.2.2Formula to calculate the expansion vessel pre-pressure

The pre-pressure (Pg) of the vessel depends on the installation height difference (H):

Pg=0.3+(H/10) (bar)

6.2.3To check the water volume

The indoor unit has an expansion vessel of 10 litre with a factory set pre-pressure of 1 bar.

To make sure that the unit operates properly:

▪You must check the minimum and maximum water volume.

▪You might need to adjust the pre-pressure of the expansion vessel.

Minimum water volume

Check that the total water volume in the installation is minimum 20 liter, the internal water volume of the indoor unit NOT included.

INFORMATION

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

NOTICE

When circulation in each space heating loop is controlled by remotely controlled valves, it is important that the minimum water volume is guaranteed, even if all of the valves are closed.

a	b c	d	f		g	h
			T1		T2	T3
			M1		M2	M3
		e	f	FHL1
					FHL2
						FHL3
	a	Outdoor unit
	b	Indoor unit
	c	Heat exchanger
	d	Backup heater
	e	Pump
	f	Shut-off valve
	g	Collector (field supply)
	h	By-pass valve (field supply)
	FHL1...3	Floor heating loop (field supply)
	T1...3	Individual room thermostat (optional)
	M1...3	Individual motorised valve to control loop FHL1...3
		(field supply)

Maximum water volume

Use the following graph to determine the maximum water volume for the calculated pre-pressure.

A
2.5
2
1.5
1
0.5
0.3
0	20	50	100	150	200	250	300	350	400	450	B

a Pre-pressure (bar)

b Maximum water volume (l)

Example: Maximum water volume and expansion vessel prepressure

Installation			Water volume
height	≤280 l				>280 l
difference(a)
≤7 m	No pre-pressure			Do the following:
	adjustment is required.			▪ Decrease		the	pre-
				pressure.
				▪ Check if the water
				volume	does		NOT
				exceed	the	maximum
				allowed water volume.
>7 m	Do the following:			The expansion vessel of
	▪ Increase	the	pre-	the indoor unit is too
	pressure.			small for the installation.
	▪ Check if the water
	volume	does	NOT
	exceed	the maximum
	allowed water volume.

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

6.2.4Changing the pre-pressure of the expansion vessel

NOTICE

Only a licensed installer may adjust the pre-pressure of the expansion vessel.

When changing the default pre-pressure of the expansion vessel (1 bar) is required, take following guidelines into account:

▪Only use dry nitrogen to set the expansion vessel pre-pressure.

▪Inappropriate setting of the expansion vessel pre-pressure will lead to malfunction of the system.

Changing the pre-pressure of the expansion vessel should be done by releasing or increasing nitrogen pressure through the schräder valve of the expansion vessel.

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6 Preparation

A

a Schräder valve

WARNING

▪All wiring must be performed by an authorized electrician and must comply with the applicable legislation.

▪Make electrical connections to the fixed wiring.

▪All components procured on the site and all electrical construction must comply with the applicable legislation.

WARNING

The backup heater should have a dedicated power supply.

WARNING

Always use multicore cable for power supply cables.

6.2.5To check the water volume: Examples

Example 1

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

No actions or adjustments are 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.

Actions:

▪Because the total water volume (350 l) is more than the default water volume (280 l), the pre-pressure must be decreased.

▪The required pre-pressure is:

Pg = (0.3+(H/10)) bar = (0.3+(0/10)) bar=0.3 bar.

▪The corresponding maximum water volume at 0.3 bar is 410 l. (See the graph in the chapter above).

▪Because 350 l is lower than 410 l, the expansion vessel is appropriate for the installation.

6.3Preparing electrical wiring

6.3.1About preparing electrical wiring

WARNING

▪If the power supply has a missing or wrong N-phase, equipment will break down.

▪Establish proper earthing. Do NOT earth the unit to a utility pipe, surge absorber, or telephone earth. Incomplete earthing may cause electrical shock.

▪Install the required fuses or circuit breakers.

▪Secure the electrical wiring with cable ties so that the cables do NOT come in contact with the piping or sharp edges, particularly on the high-pressure side

▪Do NOT use taped wires, stranded conductor wires, extension cords, or connections from a star system. They can cause overheating, electrical shock or fire.

▪Do NOT install a phase advancing capacitor, because this unit is equipped with an inverter. A phase advancing capacitor will reduce performance and may cause accidents.

6.3.2About preferential kWh rate power supply

Electricity companies throughout the world work hard to provide reliable electric service at competitive prices and are often authorized to 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 preferential kWh rate power supply delivery systems.

Consult with the electricity company acting as provider at the site where this equipment is to be installed to know whether it is appropriate to connect the equipment in one of the preferential kWh rate power supply delivery systems available, if any.

When the equipment is connected to such preferential kWh rate power supply, the electricity company is allowed to:

▪interrupt power supply to the equipment for certain periods of time;

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

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

Whether the power supply is interrupted or not, the wiring to the unit is different.

6.3.3Overview of electrical connections except external actuators

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6 Preparation

Normal power supply	Preferential kWh rate power supply
	Power supply is NOT interrupted	Power supply is interrupted
A	B	A	B

3	1		3	1		4		1
			4
	2		2				2
	During preferential kWh rate power supply During preferential kWh rate power supply
	activation,	power	supply is NOT interrupted. activation,			power supply		is	interrupted
	The outdoor unit is turned off by the control.				immediately	or after	some	time by the
	Remark: The electricity company must always electricity company. In						this case,		the indoor
	allow the	power	consumption	of the indoor unit must be powered by a separate normal
	unit.				power supply.

a Normal power supply

b Preferential kWh rate power supply 1 Power supply for outdoor unit

2Power supply and interconnection cable to indoor unit

3 Power supply for backup heater

4 Preferential kWh rate power supply (voltage free contact)

5Normal kWh rate power supply (to power the indoor unit PCB in the event of power supply interruption of the preferential kWh rate power supply)

6.3.4Overview of electrical connections for external and internal actuators

The following illustration shows the required field wiring.

INFORMATION

The following illustration is an example and may NOT match your system layout.

20	C
	12	6
15		7
			M
B		21
13
		16
14			M
17		14
18		8 10	D
9	19
			E

A

aSingle power supply for outdoor unit, backup heater and booster heater

			b	Backup heater
			c	Indoor unit
			d Domestic hot water tank
			e	Booster heater
		Item		Description		Wires	Maximum
							running
							current
		Outdoor unit and indoor unit power supply

Item	Description	Wires	Maximum
			running
			current
1	Power supply for	2+GND or	(a)
	outdoor unit	3+GND
2	Power supply and	3	(c)
	interconnection cable to
	indoor unit
3	Power supply for	See table below.	—
	backup heater
4	Preferential kWh rate	2	(e)
	power supply (voltage
	free contact)
5	Normal kWh rate power	2	6.3 A
	supply
User interface
6	User interface	2	(f)
Optional equipment
7	3 way valve	3	100 mA(b)
8	Power supply for	4+GND	(c)
	booster heater and
	thermal protection
	(from indoor unit)
9	Power supply for	2+GND	13 A
	booster heater (to
	indoor unit)
10	Domestic hot water	2	(d)
	tank thermistor
11	Power supply for	2	(b)
	bottom plate heater
12	Room thermostat	3 or 4	100 mA(b)
13	Outdoor ambient	2	(b)
	temperature sensor
14	Indoor ambient	2	(b)
	temperature sensor
15	Heat pump convector	4	100 mA(b)
Field supplied components
16	Shut-off valve	2	100 mA(b)
17	Electricity meter	2 (per meter)	(b)
18	Domestic hot water	2	(b)
	pump
19	Alarm output	2	(b)
20	Changeover to external	2	(b)
	heat source control

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7 Installation

Item	Description	Wires	Maximum
			running
			current
21	Space cool/heat	2	(b)
	operation control
22	Power consumption	2 (per input	(b)
	digital inputs	signal)

(a)Refer to name plate on outdoor unit.

(b)Minimum cable section 0.75 mm².

(c)Cable section 2.5 mm².

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

(e)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.

(f)Cable section 0.75 mm² till 1.25 mm²; maximum length: 500 m. Applicable for both single user interface and dual use interface connection.

7.1.2To open the switch box cover of the indoor unit

4X

NOTICE

More technical specifications of the different connections are indicated on:

▪Wiring diagram in the switch box of the unit

▪"14.5 Wiring diagram" on page 70

Backup heater	Power supply	Required number of
type		conductors
*3V	1x 230 V	2+GND
*9W	1x 230 V	2+GND + 2 bridges
	3x 230 V	3+GND + 1 bridge
	3x 400 V	4+GND

7Installation

7.1Opening the units

7.1.1To open the indoor unit

1Loosen and remove the 2 screws that fix the front panel.

2X

2Tilt the front panel towards you and remove the front panel.

7.2Mounting the indoor unit

7.2.1To install the indoor unit

CAUTION

Do NOT grasp the piping to lift the indoor unit.

1Lift the unit from the package.

1

60kg

2Remove the screws and sound plate at the bottom of the package.

3Remove the 4 screws from the bottom of the unit. Unhook and remove the side plates.

2

3

3

1 4X

4Put the installation pattern (see packing) on the wall and follow the steps as shown below.

1

2

	2X
3	4

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7 Installation

5Lift the unit.

2

1

6Tilt the top of the unit against the wall at the position of the 2 inserted screws.

7Hook the unit against the wall.

2X

2X

1

2

3

8Assemble the unit.

1

1	2

2

4X

3

7.2.2To install the drain pan kit

If a drain pan kit (EKHBDPCA2) is required, install it before connecting the refrigerant and water pipes and the electrical wiring.

To install, see the installation manual of the drain pan kit.

7.3Connecting the water piping

7.3.1To connect the water piping

NOTICE

Do NOT use excessive force when connecting the piping. Deformation of the piping can cause malfunctioning of the unit.

To facilitate service and maintenance, 2 shut-off valves are provided. Mount the valves on the water inlet and on the water outlet. Mind their the position. Orientation of the integrated drain valves is important for servicing.

1Install the shut-off valves on the water pipes.

B A

a Water inlet b Water outlet

NOTICE

To avoid damage to the surroundings in case of water leakage, it is recommended to close the cold water inlet stop valves during periods of absence.

2 Screw the indoor unit nuts on the shut-off valves.

3Connect the field piping on the shut-off valves

4In case of connection with the optional domestic hot water tank, see the installation manual of the domestic hot water tank.

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7 Installation

NOTICE

▪ A drain device and pressure relief device should be installed on the cold water inlet connection of the domestic hot water cylinder.

▪To avoid back siphonage, it is recommended to install a non-return valve on the water inlet of the domestic hot water tank in accordance with the applicable legislation.

▪It is recommended to install a pressure reducing valve on the cold water inlet in accordance with the applicable legislation.

▪An expansion vessel should be installed on the cold water inlet in accordance with the applicable legislation.

▪It is recommended to install the pressure relief valve on higher position as top of the domestic hot water tank. Heating of the domestic hot water tank causes water to expand and without pressure relief valve the water pressure inside the tank can rise above the tank design pressure. Also the field installation (piping, tapping points, etc.) connected to the tank is subjected to this high pressure. To prevent this, a pressure relieve valve needs to be installed.

The overpressure prevention depends on the correct operation of the field installed pressure relief valve. If this is NOT working correctly, overpressure will deform the tank and water leakage may occur. To confirm good operation, regular maintenance is required.

5Install the sound plate as shown in the figure below.

4X

1

2

3

7.3.2To fill the water circuit

1Connect the water supply hose to the drain and fill valve.

2Open the drain and fill valve.

3Make sure that the automatic air purge valve is open (at least 2 turns).

INFORMATION

For location of the air purge valve, see "14.2.1 Components: Indoor unit" on page 67.

4Fill the circuit with water until the manometer indicates a pressure of ±2.0 bar.

5Purge as much air as possible from the water circuit.

NOTICE

▪ Air in the water circuit can cause malfunctioning of the backup heater. During filling, it may not be possible to remove all the air from the circuit. Remaining air will be removed through the automatic air purge valves during the initial operating hours of the system. Additional filling with water afterwards may be required.

▪To purge the system, use the special function as described in the chapter "9 Commissioning" on page 58. This function should be used to purge the heat exchanger coil of the domestic hot water tank.

6Close the drain and fill valve.

7Disconnect the water supply hose from the drain and fill valve.

NOTICE

The water pressure indicated on the manometer will vary depending on the water temperature (higher pressure at higher water temperature).

However, at all times water pressure shall remain above 1 bar to avoid air entering the circuit.

7.3.3To fill the domestic hot water tank

For installation instructions, see the installation manual of the domestic hot water tank.

7.3.4To insulate the water piping

The piping in the complete water circuit must be insulated to prevent condensation during cooling operation and reduction of the heating and cooling capacity.

If the temperature is higher than 30°C and the humidity is higher than RH 80%, the thickness of the sealing materials should be at least 20 mm to prevent condensation on the surface of the sealing.

7.4Connecting the electrical wiring

DANGER: RISK OF ELECTROCUTION

INFORMATION

More information about the legend and the location of the wiring diagram of the unit can be found in "14.5 Wiring diagram" on page 70.

WARNING

Always use multicore cable for power supply cables.

7.4.1About electrical compliance

Only for ERLQ006CAV3+ERLQ008CAV3

Equipment complying with EN/IEC 61000 3 12 (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.).

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