Daikin ERHQ011BA, ERHQ014BA, ERHQ016BA, ERLQ011CA, ERLQ014CA Installer reference guide

...

0 (0)

INSTALLER

REFERENCE GUIDE

Daikin Altherma - Low Temperature Split

ERHQ011BA

ERHQ014BA

ERHQ016BA

ERLQ011CA

ERLQ014CA

ERLQ016CA

EHVH16S18CA

EHVH16S26CA

EHVX16S18CA

EHVX16S26CA

Table of contents					7	Installation			22
						7.1	Opening the units...........................................................................		22
1	About the documentation			2			7.1.1	To open the indoor unit and switch box cover ....................	22
1	About the documentation			2		7.2 Mounting the indoor unit ................................................................			23
	1.1	About this document		2			7.2.1	To install the indoor unit .....................................................	23
	1.1	About this document		2		7.3 Connecting the water piping			23
2	General safety precautions			2		7.3 Connecting the water piping			23
2	General safety precautions			2			7.3.1	To connect the water piping ...............................................	23
	2.1	About the documentation .................................................................		2			7.3.2	To connect the pressure relief valve to the drain................	23
		2.1.1 Meaning of warnings and symbols .......................................		2			7.3.3	To fill the water circuit.........................................................	24
	2.2	For the installer ................................................................................		3			7.3.4	To fill the domestic hot water tank ......................................	24
		2.2.1	General.................................................................................	3			7.3.5	To insulate the water piping................................................	24
		2.2.2	Installation site......................................................................	3		7.4 Connecting the electrical wiring .....................................................			24
		2.2.3	Refrigerant............................................................................	3			7.4.1	About electrical compliance ...............................................	24
		2.2.4	Water....................................................................................	3			7.4.2	To connect the electrical wiring on the indoor unit .............	25
		2.2.5	Electrical...............................................................................	4			7.4.3	To connect the main power supply.....................................	25
3	About the box			4			7.4.4	To connect the backup heater power supply......................	26
3	About the box			4			7.4.5	To connect the user interface	27
	3.1	Indoor unit		4			7.4.5	To connect the user interface	27
	3.1	Indoor unit		4			7.4.6	To connect the shut-off valve	28
		3.1.1 To unpack the indoor unit		4			7.4.6	To connect the shut-off valve	28
		3.1.1 To unpack the indoor unit		4			7.4.7	To connect the electrical meters	29
		3.1.2 To remove the accessories from the indoor unit		4			7.4.7	To connect the electrical meters	29
		3.1.2 To remove the accessories from the indoor unit		4			7.4.8	To connect the domestic hot water pump	29
4 About the units and options				5			7.4.8	To connect the domestic hot water pump	29
4 About the units and options				5			7.4.9	To connect the alarm output...............................................	29
	4.1	Identification.....................................................................................		5			7.4.10	To connect the space cooling/heating ON/OFF output ......	29
		4.1.1 Identification label: Indoor unit..............................................		5			7.4.11	To connect the changeover to external heat source ..........	29
	4.2 Possible combinations of units and options .....................................			5			7.4.12 To connect the power consumption digital inputs...............		29
		4.2.1 List of options for indoor unit ................................................		5		7.5 Finishing the indoor unit installation...............................................			30
		4.2.2 Possible combinations of indoor unit and outdoor unit.........		6			7.5.1	To fix the user interface cover to the indoor unit ................	30
5	Application guidelines			6			7.5.2	To close the indoor unit ......................................................	30
5	Application guidelines			6	8	Configuration			30
	5.1	Overview: Application guidelines .....................................................		6	8	Configuration			30
	5.2 Setting up the space heating/cooling system...................................			6		8.1	Overview: Configuration ................................................................		30
		5.2.1	Single room ..........................................................................	7			8.1.1	To connect the PC cable to the switch box ........................	30
		5.2.2 Multiple rooms – One LWT zone ..........................................		8			8.1.2	To access the most used commands .................................	30
		5.2.3 Multiple rooms – Two LWT zones ......................................		10			8.1.3	To copy the system settings from the first to the second user
	5.3 Setting up an auxiliary heat source for space heating ...................			11				interface .............................................................................	31
	5.4 Setting up the domestic hot water tank ..........................................			12			8.1.4	To copy the language set from the first to the second user
		5.4.1 System layout – Integrated DHW tank ...............................		12				interface .............................................................................	31
		5.4.2 System layout – Standalone DHW tank .............................		13			8.1.5	Quick wizard: Set the system layout after first
		5.4.3 Selecting the volume and desired temperature for the DHW						power ON ...........................................................................	31
			tank.....................................................................................	13		8.2	Basic configuration ........................................................................		32
		5.4.4 Setup and configuration – DHW tank .................................		13			8.2.1	Quick wizard: Language / time and date............................	32
		5.4.5 Combination: Standalone DHW tank + Solar panels..........		14			8.2.2	Quick wizard: Standard ......................................................	32
		5.4.6 DHW pump for instant hot water ........................................		14			8.2.3	Quick wizard: Options ........................................................	34
		5.4.7 DHW pump for disinfection.................................................		14			8.2.4	Quick wizard: Capacities (energy metering) ......................	35
	5.5 Setting up the energy metering......................................................			14			8.2.5	Space heating/cooling control ............................................	36
		5.5.1	Produced heat ....................................................................	14			8.2.6	Domestic hot water control.................................................	39
		5.5.2	Consumed energy ..............................................................	15			8.2.7	Contact/helpdesk number ..................................................	40
		5.5.3 Normal kWh rate power supply ..........................................		15		8.3	Advanced configuration/optimization .............................................		40
		5.5.4 Preferential kWh rate power supply ...................................		15			8.3.1	Space heating/cooling operation: advanced ......................	40
	5.6 Setting up the power consumption control.....................................			16			8.3.2	Domestic hot water control: advanced ...............................	43
		5.6.1	Permanent power limitation................................................	16			8.3.3	Heat source settings ..........................................................	46
		5.6.2 Power limitation activated by digital inputs .........................		16			8.3.4	System settings..................................................................	48
		5.6.3	Power limitation process ....................................................	17		8.4	Menu structure: Overview..............................................................		51
	5.7 Setting up an external temperature sensor....................................			17		8.5 Menu structure: Overview installer settings ...................................			52
6	Preparation			18	9	Commissioning			53
	6.1	Preparing installation site ...............................................................		18		9.1	Overview: Commissioning .............................................................		53
		6.1.1 Installation site requirements of the indoor unit..................		18		9.2 Checklist before test run ................................................................			53
	6.2	Preparing water piping ...................................................................		18		9.3	Air purge function...........................................................................		53
		6.2.1	Water circuit requirements..................................................	18			9.3.1	To perform a manual air purge ...........................................	53
		6.2.2 Formula to calculate the expansion vessel pre-pressure ...		19			9.3.2	To perform an automatic air purge .....................................	54
		6.2.3 To check the water volume.................................................		19			9.3.3	To interrupt air purge ..........................................................	54
		6.2.4 Changing the pre-pressure of the expansion vessel ..........		20		9.4 To perform a test run......................................................................			54
		6.2.5 To check the water volume: Examples ...............................		20		9.5 To perform an actuator test run......................................................			54
	6.3	Preparing electrical wiring		20			9.5.1	Possible actuator test runs.................................................	54
	6.3	Preparing electrical wiring		20		9.6 Underfloor heating screed dryout			54
		6.3.1 About preparing electrical wiring ........................................		20		9.6 Underfloor heating screed dryout			54
		6.3.2 About preferential kWh rate power supply		21			9.6.1	To program an underfloor heating screed dryout
		6.3.2 About preferential kWh rate power supply		21				schedule	55
		6.3.3 Overview of electrical connections except						schedule	55
		6.3.3 Overview of electrical connections except					9.6.2	To start an underfloor heating screed dryout	55
			external actuators	21			9.6.2	To start an underfloor heating screed dryout	55
			external actuators	21			9.6.3	To readout the status of an underfloor heating
		6.3.4 Overview of electrical connections for external and internal					9.6.3	To readout the status of an underfloor heating
								screed dryout	55
			actuators	21				screed dryout	55
			actuators	21			9.6.4	To interrupt an underfloor heating screed dryout	55
							9.6.4	To interrupt an underfloor heating screed dryout	55
					10 Hand-over to the user				55

Installer reference guide	EHVH/X16
1	Daikin Altherma - Low Temperature Split
1	4P313777-1 – 2012.05

1 About the documentation

11 Maintenance and service		56
11.1	Overview: Maintenance..................................................................	56
11.2	Maintenance safety precautions ....................................................	56
	11.2.1 Opening the indoor unit ......................................................	56
11.3	Checklist for yearly maintenance for indoor unit ............................	56
	11.3.1 To drain the domestic hot water tank..................................	57
12 Troubleshooting		57
12.1	Overview: Troubleshooting.............................................................	57
12.2	General guidelines .........................................................................	57
12.3	Solving problems based on symptoms ..........................................	57
	12.3.1 Symptom: The unit is NOT heating or cooling as
	expected.............................................................................	57
	12.3.2 Symptom: The compressor does NOT start (space heating
	or domestic water heating) .................................................	58
	12.3.3 Symptom: The pump is making noise (cavitation)..............	58
	12.3.4 Symptom: The pressure relief valve opens ........................	58
	12.3.5 Symptom: The water pressure relief valve leaks................	58
	12.3.6 Symptom: The space is NOT sufficiently heated at low
	outdoor temperatures .........................................................	58
	12.3.7 Symptom: The pressure at the tapping point is temporarily
	unusual high .......................................................................	59
	12.3.8 Symptom: Decoration panels are pushed away due to a
	swollen tank........................................................................	59
12.4	Solving problems based on error codes.........................................	59
	12.4.1 Error codes: Overview ........................................................	59
13 Glossary		60
14 Technical data		61
14.1	Dimensions and service space ......................................................	61
	14.1.1 Dimensions and service space: Indoor unit........................	61
14.2	Components...................................................................................	63
	14.2.1 Components: Indoor unit ....................................................	63
	14.2.2 Components: Switch box (indoor unit)................................	64
14.3	Functional diagrams.......................................................................	65
	14.3.1 Functional diagram: Indoor unit ..........................................	65
14.4	Piping diagram ...............................................................................	66
	14.4.1 Piping diagram: Indoor unit.................................................	66
14.5	Wiring diagram ...............................................................................	67
	14.5.1 Wiring diagram – components: Indoor unit.........................	67
14.6	Technical specifications..................................................................	73
	14.6.1 Technical specifications: Indoor unit ...................................	73
14.7	Operation range .............................................................................	75
	14.7.1 Operation range: Indoor unit...............................................	75
14.8	ESP curve ......................................................................................	78
	14.8.1 ESP curve: Indoor unit........................................................	78
14.9	Performance...................................................................................	79
14.10Combination table ..........................................................................		82

1 About 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
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.

2 General 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.

2.1.1 Meaning 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.

EHVH/X16	Installer reference guide
Daikin Altherma - Low Temperature Split	2
4P313777-1 – 2012.05	2

2 General safety precautions

2.2For the installer

2.2.1 General

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.

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.

2.2.2 Installation 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.

2.2.3 Refrigerant

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.

2.2.4 Water

NOTICE

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

Installer reference guide	EHVH/X16
3	Daikin Altherma - Low Temperature Split
3	4P313777-1 – 2012.05

3 About the box

2.2.5 Electrical

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.

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.

3 About 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

3.1.1 To unpack the indoor unit

3.1.2To remove the accessories from the indoor unit

1Remove the screws at the top of the unit.

2Remove the top panel.

3 Remove the accessories.

EHVH/X16	Installer reference guide
Daikin Altherma - Low Temperature Split	4
4P313777-1 – 2012.05	4

4 About the units and options

a		b		c		d		e
	1x		1x		1x		1x		1x

f		g		h		i
	1x		2x		1x		2x

aGeneral safety precautions

bAddendum book for optional equipment

cIndoor unit installation manual

dOperation manual

eCD

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

gShut-off valve

hUser interface cover

iHinges for user interface cover

4 Reinstall the top panel.

4 About 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.

4.1.1 Identification label: Indoor unit

Location

Model identification

Example: E HV H 04 S 18 CA 3V

Code	Description
E	European model

HV	HV=Floor-standing indoor unit with integrated tank

H	H=Heating only
	X=Heating/cooling

04	Capacity class:
	04=4.5 kW
	08=7.5 kW
	16=16 kW

S	Integrated tank material:
	S=Stainless steel

18	Integrated tank volume:
	18=180 l
	26=260 l

CA	Series

3V	Backup heater model
	3V
	9W

4.2Possible combinations of units and options

4.2.1 List 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 27.

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

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.

Installer reference guide	EHVH/X16
5	Daikin Altherma - Low Temperature Split
5	4P313777-1 – 2012.05

5 Application guidelines

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 (EKPCCAB1)

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.

4.2.2 Possible combinations of indoor unit and outdoor unit

		Indoor unit
Outdoor unit
Outdoor unit	EHVH16S18CA3V	EHVX16S18CA3V	EHVH16S26CA9W	EHVX16S26CA9W
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

5 Application 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 the configuration chapter.

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

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.

EHVH/X16	Installer reference guide
Daikin Altherma - Low Temperature Split	6
4P313777-1 – 2012.05	6

5 Application guidelines

5.2.1 Single room

Under floor heating or radiators – Wired room thermostat

Setup

AMain leaving water temperature zone

BOne single room

a User 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
Code: [C-07]	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.

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…

Under floor heating or radiators – Wireless room thermostat

Setup

a b

AMain leaving water temperature zone

BOne single room

aReceiver for wireless external room thermostat

bWireless external room thermostat

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
Code: [C-07]	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.

Installer reference guide	EHVH/X16
7	Daikin Altherma - Low Temperature Split
7	4P313777-1 – 2012.05

5 Application guidelines

Heat pump convectors

Setup

AMain leaving water temperature zone

BOne single room

a Remote 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
	Code: [C-07]	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
	Code: [C-05]	send a thermo ON/OFF
	Code: [C-05]	condition. No separation
		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

AMain leaving water temperature zone

BOne single room

a Remote 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)

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
	Code: [C-07]	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
	Code: [C-05]	send a thermo ON/OFF
	Code: [C-05]	condition. No separation
		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

5.2.2 Multiple 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.

EHVH/X16	Installer reference guide
Daikin Altherma - Low Temperature Split	8
4P313777-1 – 2012.05	8

5 Application guidelines

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

AMain leaving water temperature zone

BRoom 1

CRoom 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.

NOTICE

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
Code: [C-07]	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

M1	b
	M2

a a

AMain leaving water temperature zone

BRoom 1

CRoom 2

aExternal 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.

Configuration

Setting	Value
Unit temperature control:	0 (LWT control): Unit operation is
#: [A.2.1.7]	decided based on the leaving
Code: [C-07]	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 a

AMain leaving water temperature zone

BRoom 1

B Room 2

a Remote controller of the heat pump convectors

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

Installer reference guide	EHVH/X16
9	Daikin Altherma - Low Temperature Split
9	4P313777-1 – 2012.05

5 Application guidelines

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.

NOTICE

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
Code: [C-07]	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

AMain leaving water temperature zone

BRoom 1

CRoom 2

aExternal 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.

NOTICE

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
Code: [C-07]	water temperature.
Code: [C-07]

Number of water temperature	0 (1 LWT zone): Main
zones:
#: [A.2.1.8]
Code: [7-02]

5.2.3 Multiple 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:

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:

	Heat emitters: Design
Room (zone)	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

B C

	a	a
c	D
c	E
		b

EHVH/X16	Installer reference guide
Daikin Altherma - Low Temperature Split	10
4P313777-1 – 2012.05	10

5 Application guidelines

AAdditional leaving water temperature zone

BRoom 1

CRoom 2

DMain leaving water temperature zone

ERoom 3

aRemote controller of the heat pump convectors

bUser interface

cMixing valve station

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
Code: [C-07]	temperature of the user interface.
Code: [C-07]	Note:
	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
#: [A.2.2.5]	send a thermo ON/OFF
Code: [C-06]	condition. No separation
Code: [C-06]	between heating or cooling
	between 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.

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 weatherdependent 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:

b c d e f g

h i

	FHL1
	FHL1
	FHL2

m		FHL3
m

Installer reference guide	EHVH/X16
11	Daikin Altherma - Low Temperature Split
11	4P313777-1 – 2012.05

5 Application guidelines

aOutdoor unit

bIndoor unit

cHeat exchanger

dBackup heater

ePump

fShut-off valve

gMotorised 3-way valve (delivered with DHW tank)(field supply)

hNon-return valve

iShut-off valve

jCollector (field supply)

kAuxiliary boiler (field supply)

lAquastat valve (field supply)

mDHW tank (option)

nHeat exchanger coil

FHL1...3 Under floor heating

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 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 setting up the space heating/cooling application guidelines).

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 setting up space heating/cooling application guideline).

The auxiliary contact can be:

An outdoor temperature thermostat An electricity tariff contact

A manually operated contact

…

Setup: Connect the following field wiring:

Com

Indoor

Indoor/Auto/Boiler

BTI

X2M

K1A

K2A

K1A

K2A

BTI

Boiler thermostat input

Auxiliary contact (normal closed)

Heating demand room thermostat (optional)

K1A

Auxiliary relay for activation of indoor unit (field supply)

K2A

Auxiliary relay for activation of boiler (field supply)

Indoor

Indoor unit

Auto

Automatic

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

5.4.1 System layout – Integrated DHW tank

a	b c d f	UI	i
a	b c d f	h h	i

FHL1 FHL2 FHL3

aOutdoor unit

bIndoor unit

cHeat exchanger

dBackup heater

ePump

fMotorised 3-way valve

gDHW tank

hShut-off valve

iCollector (field supply) FHL1...3 Under floor heating

UI User interface

EHVH/X16	Installer reference guide
Daikin Altherma - Low Temperature Split	12
4P313777-1 – 2012.05	12

5 Application guidelines

5.4.2 System layout – Standalone DHW tank

b c d e f

FHL1

i j

FHL2

FHL3

aOutdoor unit

bIndoor unit

cHeat exchanger

dBackup heater

ePump

fShut-off valve

gMotorised 3-way valve

hCollector (field supply)

iDHW tank

jHeat 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

5.4.4 Setup 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

For more information about:

Optimizing the energy consumption for producing domestic hot water, see the configuration chapter.

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

Installer reference guide	EHVH/X16
13	Daikin Altherma - Low Temperature Split
13	4P313777-1 – 2012.05

5 Application guidelines

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.

c.4	c
a	c.3
a
	c.2
	b

<![if ! IE]>

<![endif]>m≥0.5

f e

c.1

aSolar panels

bSolar pump station

cSolar 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

dSolar kit

eDHW 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	i	f
b		g
		g

aIndoor unit

bDHW tank

cDHW pump

fShower

gCold water

hDomestic 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 the installation chapter.

Configuration

For more information, see the configuration chapter.

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

5.4.7 DHW pump for disinfection

Setup

	h
		c
a	i	d	f
b	i	d	f
b		e	g
		e	g

aIndoor unit

bDHW tank

cDHW pump

dHeater element

eNon-return valve

fShower

gCold water

hDomestic 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 the configuration chapter.

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

5.5.1 Produced heat

Applicable for all models.

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.

EHVH/X16	Installer reference guide
Daikin Altherma - Low Temperature Split	14
4P313777-1 – 2012.05	14

5 Application guidelines

5.5.2 Consumed energy

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

Calculating

Measuring

NOTICE

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 technical data.

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.

NOTICE

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

5.5.3 Normal 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
		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.

230V and 400V 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 preferential kWh rate power supply for an example with two power meters.

5.5.4 Preferential kWh rate power supply

General rule

Power meter 1: Measures the outdoor unit.

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.

Installer reference guide	EHVH/X16
15	Daikin Altherma - Low Temperature Split
15	4P313777-1 – 2012.05

Example

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

			a		b
		c			d
		c			d
e		f		e
g	h	i		j
A		B		C
		A		Outdoor unit
		B		Indoor unit
		C		DHW tank
		a		Electrical cabinet (L1/N): Preferential kWh rate power
				supply

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

cPower meter (L1/N)

dPower meter (L1/L2/L3/N)

eFuse (L1/N)

fFuse (L1/L2/L3/N)

gOutdoor unit (L1/N)

hIndoor unit (L1/L2/L3/N)

iBackup 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

5.6.1 Permanent 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.

5 Application guidelines

	b
	t
Pi	Power input
t	Time
DI	Digital input (power limitation level)

aPower limitation active

bActual power input

Setup and configuration

No additional equipment needed.

Set the power consumption control settings in [A.7.2] via the user interface (for the description of all settings, see configuration chapter):

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).

5.6.2 Power 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) 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 12
	b	c
A	B	C

AOutdoor unit

BIndoor unit

CDHW tank

DEnergy management system

aPower limitation activation (4 digital inputs)

bBackup heater

cBooster heater

EHVH/X16	Installer reference guide
Daikin Altherma - Low Temperature Split	16
4P313777-1 – 2012.05	16

5 Application guidelines

DI4

DI3

DI1

Pi	Power input
t	Time
DI	Digital inputs (power limitation levels)

aPower limitation active

bActual power input

Setup

Demand PCB (option EKRP1AHTA) needed.

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

DI1 = strongest limitation (lowest energy consumption) DI4 = weakest limitation (highest energy consumption)

For the specification and the connection of the digital inputs, see technical data > wiring diagram.

Configuration

Set the power consumption control settings in [A.7.2] via the user interface (for the description of all settings, see configuration chapter):

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.

5.6.3 Power 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:

1 Limits certain electrical heaters.

	Then set the heater priority
If… has 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.

2Turns 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:

e d

A B C

Ph Produced heat

Ce Consumed energy

AOutdoor unit

BBooster heater

CBackup heater

aLimited outdoor unit operation

bFull outdoor unit operation

cBooster heater turned ON

dBackup 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 outdoor sensor.

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

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 outdoor sensor.

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

During suspend (see configuration), 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.

Installer reference guide	EHVH/X16
17	Daikin Altherma - Low Temperature Split
17	4P313777-1 – 2012.05

6 Preparation

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

(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:

>10 >10

<![if ! IE]>

<![endif]>>500

(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 Sound spectrum 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

6.2.1 Water 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.

65°C

a	c d	g	f
	e	M	f

	i
h	FCU1
h	FCU2	FCU3
M	i	FCU3
M

FHL1

FHL2

FHL3

aOutdoor unit

bIndoor unit

cHeat exchanger

dBackup heater

ePump

fStop valve

gMotorised 3-way valve

hMotorised 2-way valve (field supply)

iCollector

jDomestic hot water tank

kHeat exchanger coil

FCU1...3 Fan coil unit (optional) FHL1...3 Floor heating loop

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 dripping out of the unit. See "7.3.2 To connect the pressure relief valve to the drain" on page 23.

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.

EHVH/X16	Installer reference guide
Daikin Altherma - Low Temperature Split	18
4P313777-1 – 2012.05	18

6 Preparation

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 non-brass 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 61 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 2-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.

a	b	c
		d

aRecirculation connection

bHot water connection

cShower

dRecirculation pump

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)

6.2.3 To 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
			FHL1
				FHL2
					FHL3

aOutdoor unit

bIndoor unit

cHeat exchanger

dBackup heater

ePump

fShut-off valve

gCollector (field supply)

hBy-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)

Installer reference guide	EHVH/X16
19	Daikin Altherma - Low Temperature Split
19	4P313777-1 – 2012.05

6 Preparation

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	20	50	100	150	200	250	300	350	400	450	b
0	20	50	100	150	200	250	300	350	400	450	b

aPre-pressure (bar)

bMaximum water volume (l)

Example: Maximum water volume and expansion vessel prepressure

Installation				Water volume
height
difference(a)	≤280 l				>280 l
≤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.

aSchräder valve

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

6.3.1 About 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.

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.

EHVH/X16	Installer reference guide
Daikin Altherma - Low Temperature Split	20
4P313777-1 – 2012.05	20

6 Preparation

WARNING

The backup heater should have a dedicated power supply.

6.3.2 About 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.

6.3.3 Overview of electrical connections except external actuators

	Preferential kWh rate power supply
Normal power supply	Power supply is NOT interrupted	Power supply is interrupted
a	b	a	b

3	1	3	4	1	4	1
	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. unit must be powered by a separate normal
					power supply.

aNormal power supply

bPreferential kWh rate power supply 1 Power supply for outdoor unit

2 Power supply and interconnection cable to indoor unit

3 Power supply for backup heater

4 Preferential kWh rate power supply (voltage free contact)

5 Normal 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.

		a
	20	6
	15	12
	13	21
	13	16
	14	16
	14	M
	17	M
	17	14
	18	19
	a	Indoor unit

Installer reference guide	EHVH/X16
21	Daikin Altherma - Low Temperature Split
21	4P313777-1 – 2012.05

				Maximum
				running
Item	Description		Wires	current
Outdoor	unit and indoor unit power supply
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		(d)
	power supply (voltage
	free contact)

5	Normal kWh rate power	2		6.3 A
	supply

User interface
6	User interface	2		(e)

Optional	equipment
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		(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

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)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.

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

Backup heater		Required number of
type	Power supply	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

7 Installation

7.1Opening the units

7.1.1To open the indoor unit and switch box cover

1Loosen and remove the screws at the bottom of the unit.

2Slide the front panel of the unit downwards and remove it.

3Loosen and remove the 4 screws that fix the top panel.

4Remove the top panel from the unit.

1	2x

5Loosen and remove the 4 screws that fix the switch box cover.

6Remove the switch box cover.

EHVH/X16	Installer reference guide
Daikin Altherma - Low Temperature Split	22
4P313777-1 – 2012.05	22

Daikin ERHQ011BA, ERHQ014BA, ERHQ016BA, ERLQ011CA, ERLQ014CA Installer reference guide

7 Installation

7.2Mounting the indoor unit

7.2.1 To install the indoor unit

1 Lift the indoor unit from the pallet and place it on the floor.

3x	1
	2	120kg

2Slide the indoor unit into position.

3Adjust the height of the leveling feet to compensate for floor irregularities. The maximum allowed deviation is 1°.

≤1°

7.3Connecting the water piping

7.3.1 To 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 and fill valves is important for servicing.

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

a c

d b

aSpace heating/cooling water out

bSpace heating/cooling water in

cDomestic hot water out

dDomestic cold water in (cold water supply)

NOTICE

It is recommended to install shut-off valves to domestic cold water in and domestic hot water out connections. Shut-off valves are field supplied.

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.

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

3Connect the domestic hot water in and out pipes to the indoor unit.

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.

7.3.2To connect the pressure relief valve to the drain

The blow out of the pressure relief valve is coming out of the backside of the unit.

a Pressure relief blow-out

The blow out should be connected to an appropriate drain according to the applicable legislation. It is recommended to use a tundish.

Installer reference guide	EHVH/X16
23	Daikin Altherma - Low Temperature Split
23	4P313777-1 – 2012.05

7 Installation

7.3.3 To fill the water circuit

1 Connect the water supply hose to the fill valve.

2Open the 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 Components: Indoor unit.

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 To perform an air purge. This function should be used to purge the heat exchanger coil of the domestic hot water tank.

6Close the fill valve.

7Disconnect the water supply hose from the 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.

7.3.4 To fill the domestic hot water tank

1Open every hot water tap in turn to purge air from the system pipe work.

2Open the cold water supply valve.

3Close all water taps after all air is purged.

4Check for water leaks.

5Manually operate the field installed pressure relief valve to ensure that free water flow through the discharge pipe.

7.3.5 To 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 Wiring diagram.

7.4.1 About 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 lowvoltage systems with input current >16 A and ≤75 A per phase.).

Only for indoor units

See To connect the backup heater power supply.

EHVH/X16	Installer reference guide
Daikin Altherma - Low Temperature Split	24
4P313777-1 – 2012.05	24

7 Installation

7.4.2To connect the electrical wiring on the indoor unit

1To open the indoor unit, see To open the indoor unit.

2Wiring should enter the unit from the top:

ab+c

Routing	Possible cables (depending on unit type and installed options)
a	User interface
Low voltage	Power consumption digital inputs (field supply)
	Outdoor ambient temperature sensor (option)
	Indoor ambient temperature sensor (option)
	Electrical meters (field supply)

b	Interconnection cable
High voltage power supply	Normal kWh rate power supply

Preferential kWh rate power supply

Power supply for backup heater

Power supply for bottom plate heater (option)

c		Preferential power supply contact
High voltage control signal		Heat pump convector (option)
		Room thermostat (option)
		Shut-off valve (field supply)
		Domestic hot water pump (field supply)
		Alarm output
		Changeover to external heat source control
		Space cool/heat operation control
3	Routing of the wiring inside the unit should be as follows:		7.4.3 To connect the main power supply
a	b+c		1 Connect the main power supply.
a	b+c		In case of normal kWh rate power supply
			In case of normal kWh rate power supply
			X1A X19A
			X5M
			X2M
			3031

X6Y

X6YA

X1M

1 2 3

4Fix the cable with cable ties to the cable tie mountings to ensure strain relief and to make sure that it does NOT come in contact with the piping and sharp edges.

CAUTION

Do NOT push or place redundant cable length in the unit.

Installer reference guide	EHVH/X16
25	Daikin Altherma - Low Temperature Split
25	4P313777-1 – 2012.05

+ 58 hidden pages

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

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

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