Daikin ERLQ004-006-008CA, EHVH04S18CBV, EHVH08S18 26CBV Installer reference guide

Installer reference guide

Daikin Altherma – Low temperature split

+

ERLQ004-006-008CA	Installer reference guide
EHVH04S18CBV		English
EHVH08S18+26CBV	Daikin Altherma – Low temperature split

Table of contents

Table of contents

1 General safety precautions			3
1.1	About the documentation ..........................................................		3
	1.1.1 Meaning of warnings and symbols..............................		4
1.2	For the installer..........................................................................		4
	1.2.1	General .......................................................................	4
	1.2.2	Installation site ............................................................	4
	1.2.3	Refrigerant ..................................................................	5
	1.2.4	Brine............................................................................	5
	1.2.5	Water ..........................................................................	5
	1.2.6	Electrical .....................................................................	6

2		About the documentation			6
		2.1	About this document..................................................................		6
		2.2	Installer reference guide at a glance .........................................		7
3		About the box			7
		3.1	Overview: About the box ...........................................................		7
		3.2	Outdoor unit...............................................................................		7
			3.2.1	To unpack the outdoor unit .........................................	7	7
			3.2.2	To remove the accessories from the outdoor unit.......	8
		3.3	Indoor unit .................................................................................		8
			3.3.1	To unpack the indoor unit ...........................................	8
			3.3.2	To remove the accessories from the indoor unit.........	8
		3.4	Backup heater ...........................................................................		9
			3.4.1	To unpack the backup heater .....................................	9
			3.4.2	To remove the accessories from the backup heater...	9
	4 About the units and options				9
		4.1	Overview: About the units and options......................................		9
		4.2	Identification ..............................................................................		9
			4.2.1	Identification label: Outdoor unit .................................	9
			4.2.2	Identification label: Indoor unit ....................................	9
			4.2.3	Identification label: Backup heater ..............................	10
		4.3	Combining units and options .....................................................		10
			4.3.1	Possible options for the outdoor unit...........................	10
			4.3.2	Possible options for the indoor unit.............................	10
			4.3.3	Possible combinations of indoor unit and outdoor
				unit ..............................................................................	11
5		Application guidelines			11
		5.1	Overview: Application guidelines...............................................		11
		5.2	Setting up the space heating system ........................................		12
			5.2.1	Single room.................................................................	12
			5.2.2	Multiple rooms – One LWT zone ................................	13
			5.2.3	Multiple rooms – Two LWT zones...............................	15
		5.3	Setting up an auxiliary heat source for space heating...............		16
		5.4	Setting up the domestic hot water tank .....................................		17
			5.4.1	System layout – Integrated DHW tank........................	17
			5.4.2	Selecting the volume and desired temperature for
				the DHW tank..............................................................	17
			5.4.3	Setup and configuration – DHW tank..........................	18
			5.4.4	DHW pump for instant hot water.................................	18
			5.4.5	DHW pump for disinfection .........................................	19
		5.5	Setting up the energy metering .................................................		19
			5.5.1	Produced heat.............................................................	19
			5.5.2	Consumed energy.......................................................	19
			5.5.3	Normal kWh rate power supply...................................	19
			5.5.4	Preferential kWh rate power supply ............................	20
		5.6	Setting up the power consumption control ................................		20
			5.6.1	Permanent power limitation ........................................	20
			5.6.2	Power limitation activated by digital inputs .................	21
			5.6.3	Power limitation process .............................................	21
		5.7	Setting up an external temperature sensor ...............................		22
		Preparation			22
	6
		6.1	Overview: Preparation...............................................................		22

6.2	Preparing installation site ...........................................................		22
	6.2.1	Installation site requirements of the outdoor unit .........	22

6.2.2Additional installation site requirements of the

		outdoor unit in cold climates ........................................	23
	6.2.3	Installation site requirements of the indoor unit ...........	23
	6.2.4	Installation site requirements of the backup heater .....	24
6.3	Preparing refrigerant piping........................................................		24
	6.3.1	Refrigerant piping requirements...................................	24
	6.3.2	Refrigerant piping insulation ........................................	24
6.4	Preparing water piping ...............................................................		24
	6.4.1	Water circuit requirements ...........................................	24

6.4.2Formula to calculate the expansion vessel pre-

		pressure .......................................................................	26
	6.4.3	To check the water volume and flow rate ....................	26
	6.4.4	Changing the pre-pressure of the expansion vessel....	27
	6.4.5	To check the water volume: Examples ........................	27
6.5	Preparing electrical wiring ..........................................................		27
	6.5.1	About preparing electrical wiring..................................	27
	6.5.2	About preferential kWh rate power supply ...................	27

6.5.3Overview of electrical connections except external

actuators ......................................................................

28

6.5.4Overview of electrical connections for external and

		internal actuators .........................................................	28
Installation			29
7.1	Overview: Installation .................................................................		29
7.2	Opening the units .......................................................................		29
	7.2.1	About opening the units ...............................................	29
	7.2.2	To open the outdoor unit..............................................	29
	7.2.3	To open the indoor unit ................................................	29
	7.2.4	To open the switch box cover of the indoor unit ..........	30
	7.2.5	To open the backup heater ..........................................	30
	7.2.6	To open the switch box cover of the backup heater ....	30
7.3	Mounting the outdoor unit...........................................................		30
	7.3.1	About mounting the outdoor unit..................................	30
	7.3.2	Precautions when mounting the outdoor unit...............	30
	7.3.3	To provide the installation structure .............................	30
	7.3.4	To install the outdoor unit.............................................	31
	7.3.5	To provide drainage .....................................................	32
	7.3.6	To prevent the outdoor unit from falling over ...............	32
7.4	Mounting the indoor unit.............................................................		33
	7.4.1	About mounting the indoor unit ....................................	33
	7.4.2	Precautions when mounting the indoor unit.................	33
	7.4.3	To install the indoor unit...............................................	33
7.5	Mounting the backup heater.......................................................		33
	7.5.1	Precautions when mounting the backup heater...........	33
	7.5.2	To install the backup heater.........................................	33
7.6	Connecting the refrigerant piping ...............................................		34
	7.6.1	About connecting the refrigerant piping .......................	34
	7.6.2	Precautions when connecting the refrigerant piping ....	34
	7.6.3	Guidelines when connecting the refrigerant piping ......	34
	7.6.4	Pipe bending guidelines...............................................	35
	7.6.5	To flare the pipe end ....................................................	35
	7.6.6	To braze the pipe end ..................................................	35
	7.6.7	Using the stop valve and service port ..........................	35
	7.6.8	To connect the refrigerant piping to the outdoor unit ...	36
	7.6.9	To connect the refrigerant piping to the indoor unit .....	36
7.7	Checking the refrigerant piping ..................................................		36
	7.7.1	About checking the refrigerant piping ..........................	36
	7.7.2	Precautions when checking the refrigerant piping .......	37
	7.7.3	To check for leaks........................................................	37
	7.7.4	To perform vacuum drying ...........................................	37
7.8	Charging refrigerant ...................................................................		37
	7.8.1	About charging refrigerant ...........................................	37
	7.8.2	Precautions when charging refrigerant ........................	38
	7.8.3	To determine the additional refrigerant amount ...........	38
	7.8.4	To determine the complete recharge amount ..............	38
	7.8.5	To charge refrigerant ...................................................	38
	7.8.6	To fix the fluorinated greenhouse gases label .............	38
7.9	Connecting the water piping.......................................................		38

Installer reference guide	ERLQ004~008CA + EHVH04+08S18+26CBV
2	Daikin Altherma – Low temperature split
	4P449975-1 – 2016.06

1 General safety precautions

		7.9.1	About connecting the water piping..............................	38
		7.9.2	Precautions when connecting the water piping...........	39
		7.9.3	To connect the water piping........................................	39
		7.9.4	To connect the water piping to the backup heater ......	39
		7.9.5	To connect the recirculation piping .............................	39
		7.9.6	To connect the pressure relief valve to the drain ........	40
		7.9.7	To fill the water circuit .................................................	40
		7.9.8	To fill the domestic hot water tank ..............................	40
		7.9.9	To insulate the water piping ........................................	41
	7.10	Connecting the electrical wiring.................................................		41
		7.10.1	About connecting the electrical wiring.........................	41
		7.10.2	About electrical compliance ........................................	41
		7.10.3	Precautions when connecting the electrical wiring .....	41
		7.10.4	Guidelines when connecting the electrical wiring .......	41
		7.10.5	To connect the electrical wiring on the outdoor unit....	41
		7.10.6	To connect the electrical wiring on the indoor unit......	42
		7.10.7	To connect the main power supply .............................	43
		7.10.8	To connect the user interface .....................................	43
		7.10.9	To connect the shut-off valve......................................	44
		7.10.10	To connect the electrical meters .................................	44
		7.10.11	To connect the domestic hot water pump ...................	44
		7.10.12	To connect the alarm output .......................................	44
		7.10.13	To connect the space heating ON/OFF output ...........	45
		7.10.14	To connect the changeover to external heat source...	45
		7.10.15	To connect the power consumption digital inputs .......	45
		7.10.16	To connect the safety thermostat (normal closed
			contact) .......................................................................	45
		7.10.17	To connect the anti-legionella heater power supply....	45
		7.10.18	To connect the electrical wiring on the backup heater	46
		7.10.19	To connect the backup heater power supply ..............	46
		7.10.20	To connect the backup heater to the indoor unit.........	47
	7.11	Finishing the outdoor unit installation ........................................		47
		7.11.1	To finish the outdoor unit installation ..........................	47
		7.11.2	To close the outdoor unit ............................................	47
	7.12	Finishing the indoor unit installation ..........................................		47
		7.12.1	To fix the user interface cover to the indoor unit.........	47
		7.12.2	To close the indoor unit...............................................	48
	7.13	Finishing the backup heater installation ....................................		48
		7.13.1	To close the backup heater.........................................	48
8	Configuration			48
	8.1	Overview: Configuration ............................................................		48
		8.1.1	To connect the PC cable to the switch box.................	48
		8.1.2	To access the most used commands .........................	48
		8.1.3	To copy the system settings from the first to the
			second user interface..................................................	49
		8.1.4	To copy the language set from the first to the second
			user interface ..............................................................	50
		8.1.5	Quick wizard: Set the system layout after first power
			ON...............................................................................	50
	8.2	Basic configuration ....................................................................		50
		8.2.1	Quick wizard: Language / time and date.....................	50
		8.2.2	Quick wizard: Standard...............................................	50
		8.2.3	Quick wizard: Options .................................................	52
		8.2.4	Quick wizard: Capacities (energy metering) ...............	54
		8.2.5	Space heating control .................................................	54
		8.2.6	Domestic hot water control .........................................	57
		8.2.7	Contact/helpdesk number ...........................................	57
	8.3	Advanced configuration/optimization.........................................		58
		8.3.1	Space heating operation: advanced ...........................	58
		8.3.2	Domestic hot water control: advanced........................	61
		8.3.3	Heat source settings ...................................................	64
		8.3.4	System settings...........................................................	66
	8.4	Menu structure: Overview user settings ....................................		70
	8.5	Menu structure: Overview installer settings...............................		71
9	Commissioning			72
	9.1	Overview: Commissioning.........................................................		72
	9.2	Precautions when commissioning .............................................		72
	9.3	Checklist before commissioning................................................		72

9.4	Checklist during commissioning .................................................		72
	9.4.1	To check the minimum flow rate ..................................	73
	9.4.2	Air purge function.........................................................	73
	9.4.3	To perform a test run ...................................................	74
	9.4.4	To perform an actuator test run ...................................	74
	9.4.5	Underfloor heating screed dryout.................................	74
10 Hand-over to the user			76
11 Maintenance and service			76
11.1	Overview: Maintenance and service ..........................................		76
11.2	Maintenance safety precautions.................................................		76
	11.2.1	Opening the indoor unit................................................	76
	11.2.2	Opening the backup heater..........................................	76
11.3	Checklist for yearly maintenance of the outdoor unit .................		76
11.4	Checklist for yearly maintenance of the indoor unit....................		76
	11.4.1	To drain the domestic hot water tank...........................	77
12 Troubleshooting			77
12.1	Overview: Troubleshooting.........................................................		77
12.2	Precautions when troubleshooting .............................................		78
12.3	Solving problems based on symptoms.......................................		78
	12.3.1	Symptom: The unit is NOT heating as expected .........	78

12.3.2Symptom: The compressor does NOT start (space

	heating or domestic water heating)..............................	78
12.3.3 Symptom: The pump is making noise (cavitation) .......		79
12.3.4	Symptom: The pressure relief valve opens..................	79
12.3.5	Symptom: The water pressure relief valve leaks .........	79

12.3.6Symptom: The space is NOT sufficiently heated at

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

79

12.3.7Symptom: The pressure at the tapping point is

temporarily unusually high ...........................................

79

12.3.8Symptom: Decoration panels are pushed away due

		to a swollen tank ..........................................................	80
		12.3.9 Symptom: Tank disinfection function is NOT
		completed correctly (AH-error).....................................	80
	12.4	Solving problems based on error codes.....................................	80
		12.4.1 Error codes: Overview .................................................	80
13	Disposal		83
	13.1	Overview: Disposal.....................................................................	83
	13.2	To pump down............................................................................	83
	13.3	To start and stop forced cooling .................................................	83
14	Technical data		84
	14.1	Piping diagram: Outdoor unit......................................................	84
	14.2	Piping diagram: Indoor unit ........................................................	85
	14.3	Wiring diagram: Outdoor unit .....................................................	86
	14.4	Wiring diagram: Indoor unit ........................................................	87
	14.5	Wiring diagram: Backup heater ..................................................	90
	14.6	ESP curve: Indoor unit ...............................................................	91
15	Glossary		92
16	Field settings table		93

1 General safety precautions

1.1About 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.

▪The installation of the system, and all activities described in the installation manual and the installer reference guide must be performed by an authorized installer.

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	3
4P449975-1 – 2016.06

1 General safety precautions

1.1.1Meaning of warnings and symbols

DANGER

Indicates a situation that results in death or serious injury.

DANGER: RISK OF ELECTROCUTION

Indicates a situation that could result in electrocution.

DANGER: RISK OF BURNING

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

DANGER: RISK OF EXPLOSION

Indicates a situation that could result in explosion.

WARNING

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

WARNING: FLAMMABLE MATERIAL

CAUTION

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

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.

WARNING

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 aluminium fins of the unit.

NOTICE

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

NOTICE

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

INFORMATION

Indicates useful tips or additional information.

Symbol

Explanation

Before installation, read the installation and operation manual, and the wiring instruction sheet.

Before performing maintenance and service tasks, read the service manual.

For more information, see the installer and user reference guide.

1.2For the installer

1.2.1General

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

NOTICE

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

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

NOTICE

Works executed on the outdoor unit are best done under dry weather conditions to avoid water ingress.

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.

1.2.2Installation site

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

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

▪Make sure the area is well ventilated. Do NOT block any ventilation openings.

▪Make sure the unit is level.

Do NOT install the unit in the following places:

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.

▪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.

Installer reference guide	ERLQ004~008CA + EHVH04+08S18+26CBV
4	Daikin Altherma – Low temperature split
	4P449975-1 – 2016.06

1 General safety precautions

1.2.3Refrigerant

If applicable. See the installation manual or installer reference guide of your application for more information.

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.

DANGER: RISK OF EXPLOSION

Pump down – Refrigerant leakage. If you want to pump down the system, and there is a leakage in the refrigerant circuit:

▪Do NOT use the unit's automatic pump down function, with which you can collect all refrigerant from the system into the outdoor unit. Possible consequence:

Self-combustion and explosion of the compressor because of air going into the operating compressor.

▪Use a separate recovery system so that the unit's compressor does NOT have to operate.

WARNING

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

NOTICE

After all the piping has been connected, make sure there is no gas leak. Use nitrogen to perform a gas leak detection.

NOTICE

▪To avoid compressor breakdown, do NOT charge more than the specified amount of refrigerant.

▪When the refrigerant system is to be opened, refrigerant must be treated according to the applicable legislation.

▪Only use tools exclusively for the refrigerant type used in the system, this to ensure pressure resistance and prevent foreign materials from entering into the system.

▪Charge the liquid refrigerant as follows:

If	Then
A siphon tube is present	Charge with the cylinder upright.
(i.e., the cylinder is marked with
"Liquid filling siphon attached")
A siphon tube is NOT present	Charge with the cylinder upside
	down.

▪Open refrigerant cylinders slowly.

▪Charge the refrigerant in liquid form. Adding it in gas form may prevent normal operation.

CAUTION

When the refrigerant charging procedure is done or when pausing, close the valve of the refrigerant tank immediately. If the valve is not closed immediately, remaining pressure might charge additional refrigerant.

Possible consequence: Incorrect refrigerant amount.

1.2.4Brine

If applicable. See the installation manual or installer reference guide of your application for more information.

WARNING

The selection of the brine MUST be in accordance with the applicable legislation.

WARNING

Take sufficient precautions in case of brine leakage. If brine leaks, ventilate the area immediately and contact your local dealer.

WARNING

The ambient temperature inside the unit can get much higher than that of the room, e.g. 70°C. In case of a brine leak, hot parts inside the unit can create a hazardous situation.

WARNING

The use and installation of the application MUST comply with the safety and environmental precautions specified in the applicable legislation.

1.2.5Water

WARNING

Make sure there is no oxygen in the system. Refrigerant may only be charged after performing the leak test and the vacuum drying.

▪In case re-charge is required, refer to the nameplate of the unit. It states the type of refrigerant and necessary amount.

▪The unit is factory charged with refrigerant and depending on pipe sizes and pipe lengths some systems require additional charging of refrigerant.

If applicable. See the installation manual or installer reference guide of your application for more information.

NOTICE

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

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	5
4P449975-1 – 2016.06

2 About the documentation

1.2.6Electrical

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.

▪Make sure the field wiring complies with the applicable legislation.

▪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.

NOTICE

Precautions when laying power wiring:

▪Do not connect wiring of different thicknesses to the power terminal block (slack in the power wiring may cause abnormal heat).

▪When connecting wiring which is the same thickness, do as shown in the figure below.

▪For wiring, use the designated power wire and connect firmly, then secure to prevent outside pressure being exerted on the terminal board.

▪Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small head will damage the head and make proper tightening impossible.

▪Over-tightening the terminal screws may break them.

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

NOTICE

Only applicable if the power supply is three phase, and the compressor has an ON/OFF starting method.

If there exists the possibility of reversed phase after a momentary black out and the power goes on and off while the product is operating, attach a reversed phase protection circuit locally. Running the product in reversed phase can break the compressor and other parts.

2 About the documentation

2.1About this document

Target audience

Authorised installers

Documentation set

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

▪General safety precautions:

▪Safety instructions that you must read before installing

▪Format: Paper (in the box of the indoor unit)

▪Indoor unit installation manual:

▪Installation instructions

▪Format: Paper (in the box of the indoor unit)

▪Outdoor unit installation manual:

▪Installation instructions

▪Format: Paper (in the box of the outdoor unit)

Installer reference guide	ERLQ004~008CA + EHVH04+08S18+26CBV
6	Daikin Altherma – Low temperature split
	4P449975-1 – 2016.06

3 About the box

▪Backup heater installation manual:

▪Installation instructions

▪Format: Paper (in the box of the backup heater)

▪Installer reference guide:

▪Preparation of the installation, good practices, reference data,…

▪Format: Digital files on http://www.daikineurope.com/support- and-manuals/product-information/

▪Addendum book for optional equipment:

▪Additional info about how to install optional equipment

▪Format: Paper (in the box of the indoor unit) + Digital files on http://www.daikineurope.com/support-and-manuals/product- information/

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

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

Technical engineering data

▪A subset of the latest technical data is available on the regional

Daikin website (publicly accessible).

▪The full set of latest technical data is available on the Daikin extranet (authentication required).

2.2Installer reference guide at a glance

Chapter	Description
General safety	Safety instructions that you must read
precautions	before installing
About the documentation	What documentation exists for the
	installer
About the box	How to unpack the units and remove
	their accessories
About the units and	▪ How to identify the units
options	▪ Possible combinations of units and
	options
Application guidelines	Various installation setups of the system
Preparation	What to do and know before going
	on site
Installation	What to do and know to install the
	system
Configuration	What to do and know to configure the
	system after it is installed
Commissioning	What to do and know to commission the
	system after it is configured
Hand over to the user	What to give and explain to the user
Maintenance and service	How to maintain and service the units
Troubleshooting	What to do in case of problems
Disposal	How to dispose of the system
Technical data	Specifications of the system
Glossary	Definition of terms
Field settings table	Table to be filled in by the installer, and
	kept for future reference
	Note: There is also an installer settings
	table in the user reference guide. This
	table has to be filled in by the installer
	and handed over to the user.

3 About the box

3.1Overview: About the box

This chapter describes what you have to do after the boxes with the outdoor and indoor unit are delivered on-site.

It contains information about:

▪Unpacking and handling the units

▪Removing the accessories from the units

Keep the following in mind:

▪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.

3.2Outdoor unit

3.2.1To unpack the outdoor unit

1

2

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	7
4P449975-1 – 2016.06

3 About the box

3.2.2To remove the accessories from the outdoor unit

1 Lift the outdoor unit.

CAUTION

Only handle the outdoor unit as follows:

57kg

2 Remove the accessories at the bottom of the package.

a	b	c	d
1×	1×	1×	2×

aOutdoor unit installation manual

bFluorinated greenhouse gases label

cMultilingual fluorinated greenhouse gases label

dUnit mounting plate

3.3Indoor unit

3.3.1To unpack the indoor unit

Installer reference guide

8

3.3.2To remove the accessories from the indoor unit

1Remove the screws at the top of the unit.

2Remove the top panel.

3Remove the screws at the front of the unit.

4Push on the button on the bottom of the front plate.

5Remove the front plate.

WARNING: Sharp edges

Take the front plate on the upper part instead of the lower part. Watch your fingers, there are sharp edges on the lower part of the front plate.

	a~e+h	1
		4×
	2

g

4

5

	4	2×
		3
6 Remove the accessories.
a	b	c	d
1×	1×	1×	1×
e	f	g	h
2×	2×	1×	1×

aGeneral safety precautions

bAddendum book for optional equipment

cIndoor unit installation manual

dOperation manual

eSealing ring for shut-off valve

fShut-off valve

gUser interface cover

h2 screws for fixing the user interface.

7 Reinstall the top panel and the front plate.

ERLQ004~008CA + EHVH04+08S18+26CBV Daikin Altherma – Low temperature split 4P449975-1 – 2016.06

4 About the units and options

3.4Backup heater

NOTICE

The backup heater is an option and can only be used in combination with EHBH_CBV and EHVH_S_CBV indoor units.

3.4.1To unpack the backup heater

1

2

3.4.2To remove the accessories from the backup heater

1 Remove the wall bracket from the box.

▪Identifying the backup heater (if applicable)

▪Combining outdoor and indoor units

▪Combining the outdoor unit with options

▪Combining the indoor unit with options

4.2Identification

NOTICE

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

4.2.1Identification label: Outdoor unit

Location

Model identification

Example: ER L Q 006 CA V3

Code	Explanation
ER	European split outdoor pair heat pump
L	Low water temperature – ambient zone: −10~
	−20°C
Q	Refrigerant R410A
006	Capacity class
CA	Model series
V3	Power supply

4.2.2Identification label: Indoor unit

Location

4 About the units and options

4.1Overview: About the units and options

This chapter contains information about:

▪Identifying the outdoor unit

▪Identifying the indoor unit

Model identification

Example: E HV H 04 S 18 CB V

Code	Description
E	European model
HV	Floor-standing indoor unit with integrated tank

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	9
4P449975-1 – 2016.06

4 About the units and options

Code	Description
H	Heating only
04	Capacity class
S	Integrated tank material: Stainless steel
18	Integrated tank volume
CB	Model series
V	Model with single phase anti-legionella heater in
	the domestic hot water tank. (Without backup
	heater in the space heating circuit.)

4.2.3Identification label: Backup heater

Location

Model identification

Example: EK L BUH CB 6 W1

Code	Explanation
EK	European kit
L	Kit compatible with EHBH_CBV and
	EHVH_S_CBV indoor units
BUH	Backup heater
CB	Model series
6	Capacity of heater kit (kW)
W1	Power supply

4.3Combining units and options

4.3.1Possible options for the outdoor unit

Drain pan (EKDP008CA)

The drain pan is required to gather the drain from the outdoor unit. The drain pan kit consists of:

▪Drain pan

▪Installation brackets

For installation instructions, see the installation manual of the drain pan.

Drain pan heater (EKDPH008CA)

The drain pan heater is required to avoid freezing-up of the drain pan.

It is recommended to install this option in colder regions with possible low ambient temperatures or heavy snowfall.

For installation instructions, see the installation manual of the drain pan heater.

INFORMATION

In case the drain pan heater is used, the jumper JP_DP on the service PCB on the outdoor unit MUST be cut.

After cutting the jumper, you MUST reset the outdoor unit to activate this function.

U-beams (EKFT008CA)

The U-beams are installation brackets on which the outdoor unit can be installed.

It is recommended to install this option in colder regions with possible low ambient temperatures or heavy snowfall.

For installation instructions, see the installation manual of the outdoor unit.

4.3.2Possible options for the indoor unit

User interface (EKRUCBL*)

The user interface and a possible additional user interface are available as an option.

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.

Following user interfaces are available:

▪EKRUCBL1 contains following languages: German, French, Dutch, Italian.

▪EKRUCBL2 contains following languages: English, Swedish, Norwegian, Finnish.

▪EKRUCBL3 contains following languages: English, Spanish, Greek, Portuguese.

▪EKRUCBL4 contains following languages: English, Turkish, Polish, Romanian.

▪EKRUCBL5 contains following languages: German, Czech, Slovenian, Slovakian.

▪EKRUCBL6 contains following languages: English, Croatian, Hungarian, Estonian.

▪EKRUCBL7 contains following languages: English, German, Russian, Danish.

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

For installation instructions, see "7.10.8 To connect the user interface" on page 43.

Simplified user interface (EKRUCBS)

▪The simplified user interface can only be used in combination with the main user interface.

▪The simplified user interface acts as room thermostat and needs to be installed in the room that you want it to control.

For installation instructions, see the installation and operation manual of the simplified user interface.

Room thermostat (EKRTWA, EKRTR1, RTRNETA)

You can connect an optional room thermostat to the indoor unit. This thermostat can either be wired (EKRTWA) or wireless (EKRTR1 and RTRNETA). Thermostat RTRNETA can only be used in heating-only systems.

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:

Installer reference guide	ERLQ004~008CA + EHVH04+08S18+26CBV
10	Daikin Altherma – Low temperature split
	4P449975-1 – 2016.06

5 Application guidelines

▪Alarm output

▪Space heating On/OFF output

▪Changeover to external heat source

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

Demand PCB (EKRP1AHTA)

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

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

Remote indoor sensor (KRCS01-1)

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

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

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

INFORMATION

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

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

Remote outdoor sensor (EKRSCA1)

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

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

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

INFORMATION

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

PC configurator (EKPCCAB)

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

The software and corresponding operating instructions are available on http://www.daikineurope.com/support-and-manuals/software- downloads/.

For installation instructions, see the installation manual of the PC cable and "8 Configuration" on page 48.

Heat pump convector (FWXV)

For providing space heating, it is possible to use heat pump convectors (FWXV).

For installation instructions, refer to the installation manual of the heat pump convectors, and the addendum book for optional equipment.

Backup heater (EKLBUHCB6W1)

You can install an optional backup heater.

For installation instructions, see the installation manual of the backup heater, or this installer reference guide.

LAN adapter for smartphone control + Smart Grid applications (BRP069A61)

You can install this LAN adapter to:

▪Control the system via a smartphone app.

▪Use the system in various Smart Grid applications.

For installation instructions, see the installation manual of the LAN adapter.

LAN adapter for smartphone control (BRP069A62)

You can install this LAN adapter to control the system via a smartphone app.

For installation instructions, see the installation manual of the LAN adapter.

4.3.3Possible combinations of indoor unit and outdoor unit

Indoor unit		Outdoor unit
	ERLQ004CAV3	ERLQ006CAV3	ERLQ008CAV3
EHVH04S18CBV	O	—	—
EHVH08S18CBV	—	O	O
EHVH08S26CBV	—	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 "8 Configuration" on page 48.

This chapter contains application guidelines for:

▪Setting up the space heating system

▪Setting up an auxiliary heat source for space heating

▪Setting up the domestic hot water tank

▪Setting up the energy metering

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	11
4P449975-1 – 2016.06

5 Application guidelines

▪Setting up the power consumption

▪Setting up an external temperature sensor

5.2Setting up the space heating 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 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 requirements are clear, Daikin recommends to follow the setup guidelines below.

NOTICE

If an external room thermostat is used, the external room thermostat will control the room frost protection. However, the room frost protection is only possible if the leaving water temperature control on the unit's user interface is turned ON.

INFORMATION

In case an external room thermostat is used and room frost protection needs to be guaranteed in all conditions, then you have to set auto emergency [A.6.C] to 1.

	Setting	Value
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

5.2.1Single room

Under floor heating or radiators – Wired room thermostat

Setup

A

B

a

A

B

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.

AMain leaving water temperature zone

BOne single room

a User interface used as room thermostat

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

Configuration

▪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 installed in the room and used as room thermostat

▪User interface installed at the indoor unit and used for control close to the indoor unit + user interface installed in the room and used as room thermostat

Configuration

			Setting	Value
		Unit temperature control:		2 (RT control): Unit operation is
		▪	#: [A.2.1.7]	decided based on the ambient
				temperature of the user interface.
		▪	Code: [C-07]

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

▪#: [A.2.1.8]

▪Code: [7-02]

	External room thermostat for the		1 (Thermo ON/OFF): When the
	main zone:		used external room thermostat or
	▪	#: [A.2.2.4]	heat pump convector can only
			send a thermo ON/OFF
	▪	Code: [C-05]
			condition.

Installer reference guide	ERLQ004~008CA + EHVH04+08S18+26CBV
12	Daikin Altherma – Low temperature split
	4P449975-1 – 2016.06

5 Application guidelines

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.

Heat pump convectors

Setup

A

B

a

AMain leaving water temperature zone

BOne single room

aRemote controller of the heat pump convectors

▪The under floor heating or radiators 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 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/32 and X2M/33).

INFORMATION

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

Configuration

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

▪#: [A.2.1.8]

▪Code: [7-02]

	External room thermostat for the		1 (Thermo ON/OFF): When the
	main zone:		used external room thermostat or
	▪	#: [A.2.2.4]	heat pump convector can only
			send a thermo ON/OFF
	▪	Code: [C-05]
			condition.

Benefits

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

Setup

A

B

a

AMain leaving water temperature zone

BOne single room

aRemote controller of the heat pump convectors

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

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

▪The space heating 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 (X2M/32 and X2M/33) on the indoor unit.

Configuration

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

▪#: [A.2.1.8]

▪Code: [7-02]

	External room thermostat for the		1 (Thermo ON/OFF): When the
	main zone:		used external room thermostat or
	▪	#: [A.2.2.4]	heat pump convector can only
			send a thermo ON/OFF
	▪	Code: [C-05]
			condition.

Benefits

▪Efficiency. Under floor heating has the best performance with

Altherma LT.

▪Comfort. The combination of the two heat emitter types provides excellent heating comfort of the under floor heating.

5.2.2Multiple rooms – One LWT zone

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

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

Under floor heating or radiators – Thermostatic

▪ Stylish.

valves

Combination: Under floor heating + Heat pump convectors

▪Space heating is provided by:

▪The under floor heating

▪The heat pump convectors

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.

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	13
4P449975-1 – 2016.06

5 Application guidelines

Setup

A
B	C
	T
	a

AMain leaving water temperature zone

BRoom 1

CRoom 2

aUser interface

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

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

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

INFORMATION

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

Configuration

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

▪#: [A.2.1.8]

▪Code: [7-02]

Benefits

▪Cost effective.

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

Under floor heating or radiators – Multiple external room thermostats

Setup

A

B C

b

M1 M2

a a

AMain leaving water temperature zone

BRoom 1

CRoom 2

aExternal room thermostat

bBypass valve

▪A bypass valve must be installed to make water recirculation possible when all shut-off valves are closed. To guarantee reliable operation, provide a minimum water flow as described in table "To check the water volume and flow rate" in "6.4 Preparing water piping" on page 24.

▪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
			water temperature.
	▪	Code: [C-07]
	Number of water temperature		0 (1 LWT zone): Main
	zones:
	▪	#: [A.2.1.8]
	▪	Code: [7-02]

Benefits

Compared with under floor heating or radiators for one room:

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

Heat pump convectors

Setup

A

B C

a a

AMain leaving water temperature zone

BRoom 1

CRoom 2

aRemote controller of the heat pump convectors

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

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

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

INFORMATION

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

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

Installer reference guide	ERLQ004~008CA + EHVH04+08S18+26CBV
14	Daikin Altherma – Low temperature split
	4P449975-1 – 2016.06

5 Application guidelines

Configuration

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

▪#: [A.2.1.8]

▪Code: [7-02]

Benefits

Compared with heat pump convectors for one room:

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

Combination: Under floor heating + Heat pump convectors

Setup

A
B	C
M1
	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: A shut-off valve (field supply) is installed before the under floor heating. It prevents hot water supply when the room has no heating demand.

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

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

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

INFORMATION

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

Configuration

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

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

5.2.3Multiple rooms – Two LWT zones

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

In this document:

▪Main zone = Zone with the lowest design temperature

▪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) the leaving water temperature when the additional zone has demand.

Typical example:

Room (zone)	Heat emitters: Design
	temperature
Living room (main zone)	Under floor heating: 35°C
Bed rooms (additional zone)	Heat pump convectors: 45°C

Setup

A

B C

		a	a
	c	D
d		E
			b

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

dPressure regulating valve

INFORMATION

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

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	15
4P449975-1 – 2016.06

5 Application guidelines

▪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 demand signals of each heat pump convector are connected in parallel to the digital input on the indoor unit

(X2M/1 and X2M/4). The indoor unit will only supply the desired additional leaving water temperature when there is an actual demand.

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

Configuration

		Setting	Value
	Unit temperature control:		2 (RT control): Unit operation is
	▪	#: [A.2.1.7]	decided based on the ambient
			temperature of the user interface.
	▪	Code: [C-07]
			Note:
			▪ Main room = user interface
			used as room thermostat
			functionality
			▪ Other rooms = external room
			thermostat functionality
	Number of water temperature		1 (2 LWT zones): Main +
	zones:		additional
	▪	#: [A.2.1.8]
	▪	Code: [7-02]
	In case of heat pump convectors:		1 (Thermo ON/OFF): When the
	External room thermostat for the		used external room thermostat or
	additional zone:		heat pump convector can only
			send a thermo ON/OFF
	▪	#: [A.2.2.5]
			condition.
	▪	Code: [C-06]
	Shut-off valve output		Set to follow the thermo demand
			of the main zone.
	At the mixing valve station		Set the desired main leaving
			water temperature.

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 rapid air heat up of the heat pump convectors (e.g., living room=under floor heating and the bedroom=convector (no continuous heating)).

▪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:

a	b c	e g	f	h	j
		M
			f	h
				i
				k
			l	i
	d	n
					FHL1
			m		FHL2
					FHL3

aOutdoor unit

bIndoor unit

cHeat exchanger

dAnti-legionella heater

ePump

fShut-off valve

gMotorised 3 way valve (delivered with DHW tank)

hNon-return valve (field supply)

iShut-off valve (field supply)

jCollector (field supply)

kAuxiliary boiler (field supply)

lAquastat valve (field supply)

mDHW tank

Installer reference guide	ERLQ004~008CA + EHVH04+08S18+26CBV
16	Daikin Altherma – Low temperature split
	4P449975-1 – 2016.06

5 Application guidelines

n Heat 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 premounted in the indoor unit.

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

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

▪To setup the heat emitters, see "5.2 Setting up the space heating system" on page 12.

Configuration

Via the user interface (quick wizard):

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

▪Set the bivalent temperature and hysteresis.

NOTICE

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

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

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

Changeover to external heat source decided by an auxiliary contact

▪Only possible in external room thermostat control AND one leaving water temperature zone (see "5.2 Setting up the space heating system" on page 12).

▪The auxiliary contact can be:

▪An outdoor temperature thermostat

▪An electricity tariff contact

▪A manually operated contact

▪…

▪Setup: Connect the following field wiring:

L

H

Com

Indoor

Indoor/Auto/Boiler

BTI

X2M

1

2

3

4

X

Y

A

K1A

K2A

N

K1A

K2A

BTI Boiler thermostat input

A Auxiliary contact (normal closed)

H Heating demand room thermostat (optional)

K1A Auxiliary relay for activation of indoor unit (field supply) K2A Auxiliary relay for activation of boiler (field supply)

Indoor Indoor unit Auto Automatic

Boiler Boiler

NOTICE

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

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

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

5.4Setting up the domestic hot water tank

The DHW tank is integrated in the indoor unit, and contains a 2.4 kW anti-legionella heater. The anti-legionella heater contains 2 safeties: a thermal cut-out and a thermal fuse. If a certain temperature is exceeded, the safeties deactivate the anti-legionella heater.

5.4.1System layout – Integrated DHW tank

a	b c	f	UI h h	i
		M

e

d FHL1 FHL2

FHL3

g

aOutdoor unit

bIndoor unit

cHeat exchanger

dAnti-legionella heater

ePump

fMotorised 3 way valve

gDHW tank

hShut-off valve

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

UI User interface

5.4.2Selecting 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.

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	17
4P449975-1 – 2016.06

5 Application guidelines

Possible DHW tank volumes

Type		Possible volumes
Integrated DHW tank	▪	180 l
	▪	260 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 DHW tank (anti-legionella heater) can increase 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 anti-legionella heater:

▪Is used as emergency heater.

▪Is used when the disinfection function for the DHW tank is active.

▪Can assist during defrost operation for the outdoor unit.

▪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×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×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 = (3×100 l)+(1×150 l)+(3×10 l)=480 l

Determining the volume and desired temperature for the DHW tank

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

5.4.3Setup 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

▪Anti-legionella heater

▪For more information about optimizing the energy consumption for producing domestic hot water, see "8 Configuration" on page 48.

5.4.4DHW pump for instant hot water

	Setup
	j	h
			c
	a	i	f
	b
			g

aIndoor unit

bDHW tank

cDHW pump (field supply)

fShower (field supply)

gCold water

hDomestic hot water OUT

iRecirculation connection

jAnti-legionella heater

▪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: see "7 Installation" on page 29.

Configuration

▪For more information, see "8 Configuration" on page 48.

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

		Installer reference guide	ERLQ004~008CA + EHVH04+08S18+26CBV
18			Daikin Altherma – Low temperature split
			4P449975-1 – 2016.06

5 Application guidelines

5.4.5DHW pump for disinfection

	Setup
	j	h
			c
	a	i	d	f
	b
			e	g

aIndoor unit

bDHW tank

cDHW pump (field supply)

dHeater element (field supply)

eNon return valve (field supply)

fShower (field supply)

gCold water

hDomestic hot water OUT

iRecirculation connection

jAnti-legionella heater

▪The DHW pump is field-supplied and its installation is the responsibility of the installer.

▪The temperature of the DHW tank can be set to maximum 65°C. If applicable legislation requires higher temperature for disinfection, you can connect a DHW pump and heater element as shown above.

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

Configuration

The indoor unit can control DHW pump operation. For more information, see "8 Configuration" on page 48.

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 domestic hot water production

▪You can read out the energy data:

▪Per month

▪Per year

INFORMATION

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

5.5.1Produced heat

INFORMATION

The sensors used to calculate the produced heat are calibrated automatically.

▪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 anti-legionella heater in the domestic hot water tank

▪Setup and configuration:

▪No additional equipment needed.

▪Measure the capacity (resistance measurement) of the antilegionella heater and set the capacity via the user interface.

Example: If you measure an anti-legionella heater resistance of

24Ω, the capacity of the heater at 230 V is 2200 W.

5.5.2Consumed energy

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

▪Calculating

▪Measuring

INFORMATION

You cannot combine calculating the consumed energy

(example: for backup heater (if applicable)) 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 EHVH04+08.

▪The consumed energy is calculated internally based on:

▪The actual power input of the outdoor unit

▪The set capacity of the backup heater (if applicable) and antilegionella 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) (if applicable)

▪The anti-legionella heater

Measuring the consumed energy

▪Applicable for all models.

▪Preferred method because of higher accuracy.

▪Requires external power meters.

▪Setup and configuration: When using electrical power meters, set the number of pulses/kWh for each power meter via the user interface. Consumed energy data for EHVH11+16 models will only be available if this setting is configured.

INFORMATION

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

5.5.3Normal kWh rate power supply

General rule

One power meter that covers the entire system is sufficient.

Setup

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

Power meter type

	In case of…	Use a… power meter
▪	Single-phase outdoor unit	Single-phase
▪	No backup heater or backup
	heater supplied from a single-
	phase grid

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	19
4P449975-1 – 2016.06

5 Application guidelines

In case of…

Use a… power meter

In other cases (i.e. a three-phase Three-phase outdoor unit and/or a backup

heater connected to a threephase grid)

Example

Single-phase power meter

Three-phase power meter

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

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

Exception

▪You can use a second power meter if:

▪The power range of one meter is insufficient.

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

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

▪Connection and setup:

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

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

▪See "5.5.4 Preferential kWh rate power supply" on page 20 for an example with two power meters.

5.5.4Preferential kWh rate power supply

General rule

▪Power meter 1: Measures the outdoor unit.

▪Power meter 2: Measures the rest (i.e. indoor unit, optional backup heater, and anti-legionella 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 no backup heater or a single-phase backup heater configuration, use a single-phase power meter.

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

Example

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

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

AOutdoor unit

BIndoor unit

CDHW tank

aElectrical 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/N)

iBackup heater (L1/L2/L3/N)

jAnti-legionella heater (L1/N)

5.6Setting up the power consumption control

▪The power consumption control:

▪Is only applicable for EHVH04+08.

▪Allows you to limit the power consumption of the entire system

(sum of outdoor unit, indoor unit, anti-legionella heater, and optional backup 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

5.6.1Permanent power limitation

Permanent power limitation is useful to assure a maximum power or current input of the system. In some countries, legislation limits the maximum power consumption for space heating and DHW production.

Installer reference guide	ERLQ004~008CA + EHVH04+08S18+26CBV
20	Daikin Altherma – Low temperature split
	4P449975-1 – 2016.06

5 Application guidelines

Pi

a

DI

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.6.3.1] via the

user interface (for the description of all settings, see

"8 Configuration" on page 48):

▪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.

5.6.2Power limitation activated by digital inputs

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

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

▪Current (in A)

▪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 21

b

A B C

AOutdoor unit

BIndoor unit

CDHW tank

DEnergy management system

aPower limitation activation (4 digital inputs)

bAnti-legionella heater

Pi

a

DI1

DI3

b

DI4

t

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 = weakest limitation (highest energy consumption)

▪DI4 = strongest limitation (lowest energy consumption)

▪For the specifications of the digital inputs, and for where to connect them, refer to the wiring diagram.

Configuration

Set the power consumption control settings in [A.6.3.1] via the user interface (for the description of all settings, see "8 Configuration" on page 48):

▪Select activation by digital inputs.

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

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

INFORMATION

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

5.6.3Power limitation process

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

1 Limits certain electrical heaters.

If… has priority

Then set the heater priority

via the user interface to…

Domestic hot water production Anti-legionella heater.

	Result: The backup heater (if
	applicable) will be turned OFF
	first.
Space heating	Backup heater (if applicable).
	Result: The anti-legionella
	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 antilegionella heater and backup heater (step 1 and step 2).

▪Heater priority = Anti-legionella heater.

Then power consumption is limited as follows:

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	21
4P449975-1 – 2016.06

6 Preparation

Ph

							e
					d
				c
		b
a							Ce
A			B		C
			Ph		Produced heat
			Ce		Consumed energy

AOutdoor unit

BAnti-legionella heater

CBackup heater

aLimited outdoor unit operation

bFull outdoor unit operation

cAnti-legionella 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 indoor 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 "8 Configuration" on page 48), 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. To protect the outdoor unit, the internal sensor of the outdoor unit is always used.

Installer reference guide

22

6 Preparation

6.1Overview: Preparation

This chapter describes what you have to do and know before going on-site.

It contains information about:

▪Preparing the installation site

▪Preparing the refrigerant piping

▪Preparing the water piping

▪Preparing the electrical wiring

6.2Preparing 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.

6.2.1Installation site requirements of the outdoor unit

INFORMATION

Also read the following requirements:

▪General installation site requirements. See the

"General safety precautions" chapter.

▪Refrigerant piping requirements (length, height difference). See further in this "Preparation" chapter.

Mind the following spacing guidelines:

	>250	>350
<![if ! IE]> <![endif]>≤1200	b
		a
	(mm)
	a	Air outlet
	b	Air inlet

	b
>250	a
	(mm)

NOTICE

▪Do NOT stack the units on each other.

▪Do NOT hang the unit on a ceiling.

Strong winds (≥18 km/h) blowing against the outdoor unit’s air outlet causes short circuit (suction of discharge air). This may result in:

▪deterioration of the operational capacity;

▪frequent frost acceleration in heating operation;

▪disruption of operation due to decrease of low pressure or increase of high pressure;

▪a broken fan (if a strong wind blows continuously on the fan, it may start rotating very fast, until it breaks).

It is recommended to install a baffle plate when the air outlet is exposed to wind.

It is recommended to install the outdoor unit with the air inlet facing the wall and NOT directly exposed to the wind.

ERLQ004~008CA + EHVH04+08S18+26CBV Daikin Altherma – Low temperature split 4P449975-1 – 2016.06

b

a

c

b

aBaffle plate

bPrevailing wind direction

cAir outlet

Do NOT install the unit in the following places:

▪Sound sensitive areas (e.g. near a bedroom), so that the operation noise will cause no trouble.

Note: If the sound is measured under actual installation conditions, the measured value might be higher than the sound pressure level mentioned in Sound spectrum in the data book due to environmental noise and sound reflections.

▪In places where a mineral oil mist, spray or vapour may be present in the atmosphere. Plastic parts may deteriorate and fall off or cause water leakage.

It is NOT recommended to install the unit in the following places because it may shorten the life of the unit:

▪Where the voltage fluctuates a lot

▪In vehicles or vessels

▪Where acidic or alkaline vapour is present

Seaside installation. Make sure the outdoor unit is NOT directly exposed to sea winds. This is to prevent corrosion caused by high levels of salt in the air, which might shorten the life of the unit.

Install the outdoor unit away from direct sea winds.

Example: Behind the building.

b

a

c

If the outdoor unit is exposed to direct sea winds, install a windbreaker.

▪Height of windbreaker≥1.5×height of outdoor unit

▪Mind the service space requirements when installing the windbreaker.

d c

b

a

d c

ERLQ004~008CA + EHVH04+08S18+26CBV Daikin Altherma – Low temperature split 4P449975-1 – 2016.06

6 Preparation

aSea wind

bBuilding

cOutdoor unit

dWindbreaker

The outdoor unit is designed for outdoor installation only, and for ambient temperatures ranging 10~43°C in cooling mode and –

25~25°C in heating mode.

6.2.2Additional installation site requirements of the outdoor unit in cold climates

Protect the outdoor unit against direct snowfall and take care that the outdoor unit is NEVER snowed up.

	a
	c
d	b

c

aSnow cover or shed

bPedestal

cPrevailing wind direction

dAir outlet

▪In any case, provide at least 300 mm of free space below the unit. Additionally, make sure the unit is positioned at least 100 mm above the maximum expected level of snow. See "7.3 Mounting the outdoor unit" on page 30 for more details.

In heavy snowfall areas it is very important to select an installation site where the snow will NOT affect the unit. If lateral snowfall is possible, make sure that the heat exchanger coil is NOT affected by the snow. If necessary, install a snow cover or shed and a pedestal.

6.2.3Installation site requirements of the indoor unit

INFORMATION

Also read the precautions and requirements in the "General safety precautions" chapter.

▪ Mind the following measurements guidelines:

Maximum refrigerant piping length between indoor	30 m
unit and outdoor unit
Minimum refrigerant piping length between indoor	3 m
unit and outdoor unit
Maximum height difference between indoor unit and	20 m
outdoor unit
▪ Mind the following spacing installation guidelines:

Installer reference guide

23

6 Preparation

>10 >10

<![if ! IE]>

<![endif]>>500

(mm)

Do NOT install the unit in places such as:

▪In places where a mineral oil mist, spray or vapour may be present in the atmosphere. Plastic parts may deteriorate and fall off or cause water leakage.

▪Sound sensitive areas (e.g. near a bedroom), so that the operation noise will cause no trouble.

▪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 from 5~35°C.

6.2.4Installation site requirements of the backup heater

INFORMATION

Also read the precautions and requirements in the

"General safety precautions" chapter.

▪	Mind the measurement guidelines:
Maximum distance between the backup heater and		10 m
the indoor unit
▪	Mind the following spacing installation guidelines:

	<![if ! IE]> <![endif]>>200
>50	>50
	<![if ! IE]> <![endif]>>350

>500

▪The backup heater is designed to be wall-mounted in indoor locations only. Make sure the installation surface is a flat and vertical non-combustible wall.

Installer reference guide

24

▪The backup heater is designed to operate in ambient temperatures ranging from 5~30°C.

Do NOT install the backup heater in the following places:

▪Sound sensitive areas (e.g. near a bedroom), so that the operation noise will cause no trouble.

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

▪In places where frost is possible.

6.3Preparing refrigerant piping

6.3.1Refrigerant piping requirements

INFORMATION

Also read the precautions and requirements in the "General safety precautions" chapter.

▪Piping material: Phosphoric acid deoxidised seamless copper.

▪Piping diameter:

Liquid piping	Ø6.4 mm (1/4")
Gas piping	Ø15.9 mm (5/8")

▪ Piping temper grade and thickness:

Outer diameter	Temper grade	Thickness (t)(a)
(Ø)
6.4 mm (1/4")	Annealed (O)	≥0.8 mm	Ø
15.9 mm (5/8")	Annealed (O)	≥1.0 mm	t

(a)Depending on the applicable legislation and the unit's maximum working pressure (see "PS High" on the unit name plate), larger piping thickness might be required.

6.3.2Refrigerant piping insulation

▪Use polyethylene foam as insulation material:

▪with a heat transfer rate between 0.041 and 0.052 W/mK (0.035 and 0.045 kcal/mh°C)

▪with a heat resistance of at least 120°C

▪Insulation thickness

Pipe outer diameter				Insulation inner	Insulation thickness
	(Øp)			diameter (Øi)	(t)
6.4 mm (1/4")				8~10 mm	10 mm
15.9 mm (5/8")				16~20 mm	13 mm
Øp	Øi
		t

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

6.4Preparing water piping

6.4.1Water circuit requirements

INFORMATION

Also read the precautions and requirements in the

"General safety precautions" chapter.

ERLQ004~008CA + EHVH04+08S18+26CBV Daikin Altherma – Low temperature split 4P449975-1 – 2016.06

6 Preparation

NOTICE

In case of plastic pipes, make sure they are fully oxygen diffusion tight according to DIN 4726. The diffusion of oxygen into the piping can lead to excessive corrosion.

▪Connecting piping – Legislation. Make all piping connections in accordance with the applicable legislation and the instructions in the "Installation" chapter, respecting the water inlet and outlet.

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

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

▪Connecting piping – Air, moisture, dust. If air, moisture or dust gets into the 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.

▪Closed circuit. Use the indoor unit ONLY in a closed water system. Using the system in an open water system will lead to excessive corrosion.

▪Glycol. For safety reasons, it is NOT allowed to add any kind of glycol to the water circuit.

▪Piping length. 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.

▪Piping diameter. 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 84 for the external static pressure curves of the indoor unit.

▪Water flow. You can find the minimum required water flow for indoor unit operation in the following table. In all cases, this flow needs to be guaranteed. When the flow is lower, the indoor unit will stop operation and display error 7H.

Minimum required flow rate

04+08 models	12 l/min
11+16 models	15 l/min

▪Field supply components – Water. Only use materials that are compatible with water used in the system and with the materials used in the indoor unit.

▪Field supply components – Water pressure and temperature.

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

▪Water pressure. The maximum water pressure is 4 bar. Provide adequate safeguards in the water circuit to ensure that the maximum pressure is NOT exceeded.

▪Water temperature. All installed piping and piping accessories (valve, connections,…) MUST withstand the following temperatures:

INFORMATION

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

89°C

b

j d k	i
75°C

a	c	g	f
	e M		f

	i
h	FCU1 FCU2	FCU3
M	i

i

FHL1

FHL2

FHL3

aOutdoor unit

bIndoor unit

cHeat exchanger

dAnti-legionella 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) (field supply)

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

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

▪Drainage – Pressure relief valve. Provide a proper drain for the pressure relief valve to avoid water dripping out of the unit. See "7.9.6 To connect the pressure relief valve to the drain" on page 40.

▪Air vents. 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.

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

▪Non-brass metallic piping. 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.

▪Valve – Separating circuits. When using a 3-way valve in the water circuit make sure that the domestic hot water circuit and the floor heating circuit is fully separated.

▪Valve – Change over time. When using a 2-way valve or a 3-way valve in the water circuit, the maximum change-over time of the valve must be 60 seconds.

▪Filter. It is strongly recommended to install an additional filter on the heating water circuit. Especially to remove metallic particles from foul heating piping, it is recommended 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.

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	25
4P449975-1 – 2016.06

6 Preparation

▪Domestic hot water tank – Capacity. 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.

▪Domestic hot water tank – After installation. 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.

▪Domestic hot water tank – Standstills. 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.

▪Domestic hot water tank – Disinfection. For the disinfection function of the domestic hot water tank, see "8.3.2 Domestic hot water control: advanced" on page 61.

▪Thermostatic mixing valves. In accordance with the applicable legislation, it may be necessary to install thermostatic mixing valves.

▪Hygienic measures. The installation must be in compliance with the applicable legislation and may require additional hygienic installation measures.

▪Recirculation pump. 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

6.4.2Formula 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)

6.4.3To check the water volume and flow rate

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

10 litre, 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	e e	f	g
		T1	T2	T3
		M1	M2	M3

FHL1

FHL2

FHL3

aOutdoor unit

bIndoor unit

cHeat exchanger

dPump

eShut-off valve

fCollector (field supply)

gBy-pass valve (field supply) FHL1...3 Floor heating loop (field supply)

T1...3 Individual room thermostat (optional)

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

supply)

Maximum water volume

Use the following graph to determine the maximum water volume for

the calculated pre-pressure.

a

2.5

2

1.5

1
0.5
0.30 10	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		≤280 l					>280 l
difference(a)
≤7 m	No pre-pressure					Do the following:
	adjustment is required.					▪ Decrease		the	pre-
						pressure.
						▪ Check if the water
						volume	does		NOT
						exceed	the	maximum
						allowed water volume.
>7 m	Do the following:					The expansion vessel of
	▪	Increase		the	pre-	the indoor unit is too
		pressure.				small for the installation.
						In this case, it is
	▪	Check	if	the	water
						recommended to install
		volume	does		NOT	an extra vessel outside
		exceed	the	maximum		the unit.
		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.

Installer reference guide	ERLQ004~008CA + EHVH04+08S18+26CBV
26	Daikin Altherma – Low temperature split
	4P449975-1 – 2016.06

6 Preparation

Minimum flow rate

Check that the minimum flow rate (required during defrost/backup heater operation (if applicable)) in the installation is guaranteed in all conditions.

NOTICE

When circulation in each or certain space heating loops is controlled by remotely controlled valves, it is important that the minimum flow rate is guaranteed, even if all valves are closed. In case the minimum flow rate cannot be reached, a flow error 7H will be generated (no heating/operation).

Minimum required flow rate

04+08 models	12 l/min
11+16 models	15 l/min

See the recommended procedure as described in "9.4 Checklist during commissioning" on page 72.

6.4.4Changing 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 Schrader valve of the expansion vessel.

260 l

180 l

a

a

aSchrader valve

6.4.5To 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.

▪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.

6.5Preparing electrical wiring

6.5.1About preparing electrical wiring

INFORMATION

Also read the precautions and requirements in the

"General safety precautions" chapter.

WARNING

▪If the power supply has a missing or wrong N-phase, equipment might 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 sharp edges or piping, 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.

WARNING

The backup heater MUST have a dedicated power supply and MUST be protected by the safety devices required by the applicable legislation.

WARNING

The anti-legionella heater MUST have a dedicated power supply and MUST be protected by the safety devices required by the applicable legislation.

WARNING

ALWAYS use multicore cable for power supply cables.

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.

6.5.2About preferential kWh rate power supply

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

This equipment allows for connection to such preferential kWh rate power supply delivery systems.

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

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	27
4P449975-1 – 2016.06

6 Preparation

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.

6.5.3Overview of electrical connections except external actuators

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

a

3 1

2

b

3 4 1

2

During preferential kWh rate power supply activation, power supply is NOT interrupted. The outdoor unit is turned off by the control.

Remark: The electricity company must always allow the power consumption of the indoor unit.

a b

005801 50

005801 50

4 1

2

During preferential kWh rate power supply activation, power supply is interrupted immediately or after some time by the electricity company. In this case, the indoor 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)

6.5.4Overview of electrical connections for external and internal actuators

The following illustration shows the required field wiring.

INFORMATION

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

		a	b 24
	20	25
	15	26 6
		12
	13
		21
	23
		16
			M
	17	22
	18	19
	a	Indoor unit

b Backup heater (option)

Item	Description		Wires	Maximum
				running
				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 anti-	2+GND		(c)
	legionella 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
15	Heat pump convector	4		100 mA(b)
Field supplied components
16	Shut-off valve	2		100 mA(b)
17	Electricity meter	2	(per meter)	(b)
18	Domestic hot water	2		(b)
	pump
19	Alarm output	2		(b)
20	Changeover to external	2		(b)
	heat source control
21	Space heating	2		(b)
	operation control
22	Power consumption	2	(per input	(b)
	digital inputs	signal)
23	Safety thermostat	2		(d)

(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 user interface connection.

			NOTICE
			More technical specifications of the different connections
			are indicated on the inside of the indoor unit.
		Installer reference guide	ERLQ004~008CA + EHVH04+08S18+26CBV
		28	Daikin Altherma – Low temperature split
			4P449975-1 – 2016.06

7 Installation

Backup heater

Item	Description	Wires	Maximum
			running
			current
Power supply
24	Backup heater power	See table below.	—
	supply
Interconnection cable
25	Backup heater	2	(a)
	thermistor
26	Backup heater thermal	2	(b)
	protector
	Backup heater	3
	connection

(a)Minimum cable section: 0.75 mm2; maximum length: 10 m.

(b)Minimum cable section: 1.50 mm2; maximum length: 10 m.

Backup heater	Power supply	Wires
*6W	1× 230 V	2+GND + 2 bridges
	3× 400 V	4+GND

NOTICE

More technical specifications of the different connections are indicated on the inside of the backup heater.

7 Installation

7.1Overview: Installation

This chapter describes what you have to do and know on-site to install the system.

Typical workflow

Installation typically consists of the following stages:

1Mounting the outdoor unit.

2Mounting the indoor unit.

3Mounting the backup heater (if applicable).

4Connecting the refrigerant piping.

5Checking the refrigerant piping.

6Charging refrigerant.

7Connecting the water piping.

8Connecting the electrical wiring.

9Finishing the outdoor installation.

10Finishing the indoor installation.

11Finishing the installation of the backup heater (if applicable).

INFORMATION

Depending on the units and/or the installation conditions, it might be necessary to connect electrical wiring before you can charge refrigerant.

7.2Opening the units

7.2.1About opening the units

At certain times, you have to open the unit. Example:

▪When connecting the refrigerant piping

▪When connecting the electrical wiring

▪When maintaining or servicing the unit

DANGER: RISK OF ELECTROCUTION

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

7.2.2To open the outdoor unit

DANGER: RISK OF ELECTROCUTION

DANGER: RISK OF BURNING

2	1×
2	1

7.2.3To open the indoor unit

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

2Push on the button at the bottom of the front plate.

WARNING: Sharp edges

Take the front plate on the upper part instead of the lower part. Watch your fingers, there are sharp edges on the lower part of the front plate.

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

CAUTION

The front panel is heavy. Be careful NOT to jam your fingers when opening or closing the unit.

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

5Remove the top panel from the unit.

ERLQ004~008CA + EHVH04+08S18+26CBV	Installer reference guide
Daikin Altherma – Low temperature split	29
4P449975-1 – 2016.06

7 Installation

	4
5	4×

2

3

2

2×

1

7.2.4To open the switch box cover of the indoor unit

4×

7.2.5To open the backup heater

2

1

2×

Installer reference guide

30

7.2.6To open the switch box cover of the backup heater

2

1	3×

7.3Mounting the outdoor unit

7.3.1About mounting the outdoor unit

When

You have to mount the outdoor and indoor unit before you can connect the refrigerant and water piping.

Typical workflow

Mounting the outdoor unit typically consists of the following stages:

1Providing the installation structure.

2Installing the outdoor unit.

3Providing drainage.

4Preventing the outdoor unit from falling over.

5Protecting the unit against snow and wind by installing a snow

cover and baffle plates. See "Preparing installation site" in "6 Preparation" on page 22.

7.3.2Precautions when mounting the outdoor unit

INFORMATION

Also read the precautions and requirements in the following chapters:

▪General safety precautions

▪Preparation

7.3.3To provide the installation structure

Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise.

Fix the unit securely by means of foundation bolts in accordance with the foundation drawing.

If the unit is installed directly on the floor, prepare 4 sets of M8 or

M10 anchor bolts, nuts and washers (field supply) as follows:

INFORMATION

The maximum height of the upper protruding part of the bolts is 15 mm.

ERLQ004~008CA + EHVH04+08S18+26CBV Daikin Altherma – Low temperature split 4P449975-1 – 2016.06