Daikin Altherma erhq011-014-016ba How to use

Installer reference guide

Daikin Altherma – Low temperature split English

Installer reference guide

Daikin Altherma – Low temperature split

ERHQ011-014-016BA

ERLQ011-014-016CA

EHVZ16S18CB

Table of Contents

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

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 .................................................................. 4

1.2.4 Brine............................................................................ 5

1.2.5 Water .......................................................................... 5

1.2.6 Electrical ..................................................................... 5

2 About the documentation 6

2.1 About this document.................................................................. 6

2.2 Installer reference guide at a glance ......................................... 6

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

3.2.2 To handle the outdoor unit.......................................... 7

3.2.3 To remove the accessories from the outdoor unit....... 7

3.3 Indoor unit ................................................................................. 7

3.3.1 To unpack the indoor unit ........................................... 7

3.3.2 To remove the accessories from the indoor unit......... 7

4 About the units and options 8

4.1 Overview: About the units and options...................................... 8

4.2 Identification .............................................................................. 8

4.2.1 Identification label: Outdoor unit ................................. 8

4.2.2 Identification label: Indoor unit .................................... 8

4.3 Combining units and options ..................................................... 9

4.3.1 Possible options for the outdoor unit........................... 9

4.3.2 Possible options for the indoor unit............................. 9

4.3.3 Possible combinations of indoor unit and outdoor

unit .............................................................................. 10

5 Application guidelines 10

5.1 Overview: Application guidelines............................................... 10

5.2 Setting up the space heating system ........................................ 10

5.2.1 Multiple rooms – TwoLWT zones............................... 10

5.3 Setting up the domestic hot water tank ..................................... 11

5.3.1 System layout – Integrated DHW tank........................ 11

5.3.2 Selecting the volume and desired temperature for

the DHW tank.............................................................. 11

5.3.3 Setup and configuration – DHW tank.......................... 12

5.3.4 DHW pump for instant hot water................................. 12

5.3.5 DHW pump for disinfection ......................................... 12

5.4 Setting up the energy metering ................................................. 13

5.4.1 Produced heat............................................................. 13

5.4.2 Consumed energy....................................................... 13

5.4.3 Normal kWh rate power supply................................... 13

5.4.4 Preferential kWh rate power supply............................ 14

5.5 Setting up the power consumption control ................................ 14

5.5.1 Permanent power limitation ........................................ 14

5.5.2 Power limitation activated by digital inputs ................. 14

5.5.3 Power limitation process ............................................. 15

5.6 Setting up an external temperature sensor ............................... 15

6 Preparation 15

6.1 Overview: Preparation............................................................... 15

6.2 Preparing installation site .......................................................... 15

6.2.1 Installation site requirements of the outdoor unit ........ 16

6.2.2 Additional installation site requirements of the

outdoor unit in cold climates ....................................... 16

6.2.3 Installation site requirements of the indoor unit .......... 16

6.3 Preparing refrigerant piping....................................................... 17

6.3.1 Refrigerant piping requirements.................................. 17

6.3.2 Refrigerant piping insulation ........................................ 17

6.4 Preparing water piping ............................................................... 17

6.4.1 Water circuit requirements ........................................... 17

6.4.2 Formula to calculate the expansion vessel pre-

pressure ....................................................................... 18

6.4.3 To check the water volume and flow rate .................... 18

6.4.4 Changing the pre-pressure of the expansion vessel.... 19

6.4.5 To check the water volume: Examples ........................ 20

6.5 Preparing electrical wiring .......................................................... 20

6.5.1 About preparing electrical wiring.................................. 20

6.5.2 About preferential kWh rate power supply ................... 20

Overview of electrical connections except external

actuators ...................................................................... 21

6.5.3 Overview of electrical connections for external and

internal actuators ......................................................... 21

7 Installation 21

7.1 Overview: Installation ................................................................. 21

7.2 Opening the units ....................................................................... 22

7.2.1 About opening the units ............................................... 22

7.2.2 To open the outdoor unit.............................................. 22

7.2.3 To open the indoor unit ................................................ 22

7.2.4 To open the switch box cover of the indoor unit .......... 22

7.3 Mounting the outdoor unit........................................................... 22

7.3.1 About mounting the outdoor unit.................................. 22

7.3.2 Precautions when mounting the outdoor unit............... 23

7.3.3 To provide the installation structure ............................. 23

7.3.4 To install the outdoor unit............................................. 23

7.3.5 To provide drainage ..................................................... 23

7.3.6 To prevent the outdoor unit from falling over ............... 24

7.4 Mounting the indoor unit............................................................. 24

7.4.1 About mounting the indoor unit.................................... 24

7.4.2 Precautions when mounting the indoor unit................. 24

7.4.3 To install the indoor unit............................................... 24

7.5 Connecting the refrigerant piping ............................................... 24

7.5.1 About connecting the refrigerant piping ....................... 24

7.5.2 Precautions when connecting the refrigerant piping.... 25

7.5.3 Guidelines when connecting the refrigerant piping...... 25

7.5.4 Pipe bending guidelines............................................... 25

7.5.5 To flare the pipe end .................................................... 25

7.5.6 To braze the pipe end .................................................. 26

7.5.7 Using the stop valve and service port .......................... 26

7.5.8 To connect the refrigerant piping to the outdoor unit ... 27

7.5.9 To connect the refrigerant piping to the indoor unit ..... 28

7.5.10 To determine if oil traps are required ........................... 28

7.6 Checking the refrigerant piping .................................................. 28

7.6.1 About checking the refrigerant piping .......................... 28

7.6.2 Precautions when checking the refrigerant piping ....... 28

7.6.3 Checking refrigerant piping: Setup............................... 28

7.6.4 To check for leaks........................................................ 28

7.6.5 To perform vacuum drying ........................................... 29

7.7 Charging refrigerant ................................................................... 29

7.7.1 About charging refrigerant ........................................... 29

7.7.2 Precautions when charging refrigerant ........................ 29

7.7.3 To determine the additional refrigerant amount........... 29

7.7.4 To determine the complete recharge amount.............. 30

7.7.5 To charge refrigerant ................................................... 30

7.7.6 To fix the fluorinated greenhouse gases label ............. 30

7.8 Connecting the water piping....................................................... 30

7.8.1 About connecting the water piping............................... 30

7.8.2 Precautions when connecting the water piping............ 30

7.8.3 To connect the water piping......................................... 30

7.8.4 To connect the recirculation piping .............................. 31

7.8.5 To connect the pressure relief valve to the drain......... 31

7.8.6 To fill the water circuit .................................................. 31

7.8.7 To fill the domestic hot water tank ............................... 32

7.8.8 To insulate the water piping ......................................... 32

7.9 Connecting the electrical wiring.................................................. 32

7.9.1 About connecting the electrical wiring.......................... 32

7.9.2 About electrical compliance ......................................... 32

1 General safety precautions

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

7.9.3 Precautions when connecting the electrical wiring ..... 33

7.9.4 Guidelines when connecting the electrical wiring ....... 33

7.9.5 Specifications of standard wiring components............ 33

7.9.6 To connect the electrical wiring on the outdoor unit.... 33

7.9.7 To reposition the air thermistor on the outdoor unit .... 34

7.9.8 To connect the electrical wiring on the indoor unit...... 35

7.9.9 To connect the main power supply ............................. 36

7.9.10 To connect the backup heater power supply .............. 36

7.9.11 To connect the user interface ..................................... 37

7.9.12 To connect the shut-off valve...................................... 37

7.9.13 To connect the electrical meters ................................. 38

7.9.14 To connect the domestic hot water pump ................... 38

7.9.15 To connect the alarm output ....................................... 38

7.9.16 To connect the power consumption digital inputs ....... 38

7.9.17 To connect the safety thermostat (normal closed

contact) ....................................................................... 38

7.10 Finishing the outdoor unit installation ........................................ 39

7.10.1 To finish the outdoor unit installation .......................... 39

7.10.2 To close the outdoor unit ............................................ 39

7.11 Finishing the indoor unit installation .......................................... 39

7.11.1 To fix the user interface cover to the indoor unit......... 39

7.11.2 To close the indoor unit............................................... 39

8 Configuration 39

8.1 Overview: Configuration ............................................................ 39

8.1.1 To connect the PC cable to the switch box................. 40

8.1.2 To access the most used commands ......................... 40

8.1.3 To copy the system settings from the first to the

second user interface.................................................. 41

8.1.4 To copy the language set from the first to the second

user interface .............................................................. 41

8.1.5 Quick wizard: Set the system layout after first power

ON............................................................................... 41

8.2 Basic configuration .................................................................... 42

8.2.1 Quick wizard: Language / time and date..................... 42

8.2.2 Quick wizard: Standard............................................... 42

8.2.3 Quick wizard: Options ................................................. 43

8.2.4 Quick wizard: Capacities (energy metering) ............... 45

8.2.5 Space heating control ................................................. 46

8.2.6 Domestic hot water control ......................................... 48

8.2.7 Contact/helpdesk number........................................... 48

8.3 Advanced configuration/optimization......................................... 48

8.3.1 Space heating operation: advanced ........................... 48

8.3.2 Domestic hot water control: advanced........................ 51

8.3.3 Heat source settings ................................................... 54

8.3.4 System settings........................................................... 55

8.4 Menu structure: Overview user settings .................................... 58

8.5 Menu structure: Overview installer settings............................... 59

9 Commissioning 60

9.1 Overview: Commissioning......................................................... 60

9.2 Precautions when commissioning ............................................. 60

9.3 Checklist before commissioning................................................ 60

9.4 Checklist during commissioning ................................................ 60

9.4.1 To check the minimum flow rate ................................. 61

9.4.2 Air purge function........................................................ 61

9.4.3 To perform a test run .................................................. 62

9.4.4 To perform an actuator test run .................................. 62

9.4.5 Underfloor heating screed dryout................................ 62

10 Hand-over to the user 64

11 Maintenance and service 64

11.1 Overview: Maintenance and service ......................................... 64

11.2 Maintenance safety precautions................................................ 64

11.2.1 Opening the indoor unit............................................... 64

11.3 Checklist for yearly maintenance of the outdoor unit ................ 64

11.4 Checklist for yearly maintenance of the indoor unit................... 64

11.4.1 To drain the domestic hot water tank.......................... 65

12 Troubleshooting 65

12.1 Overview: Troubleshooting......................................................... 65

12.2 Precautions when troubleshooting ............................................. 66

12.3 Solving problems based on symptoms....................................... 66

12.3.1 Symptom: The unit is NOT heating as expected ......... 66

12.3.2 Symptom: The compressor does NOT start (space

heating or domestic water heating).............................. 66

12.3.3 Symptom: The pump is making noise (cavitation) ....... 66

12.3.4 Symptom: The pressure relief valve opens.................. 66

12.3.5 Symptom: The water pressure relief valve leaks ......... 67

12.3.6 Symptom: The space is NOT sufficiently heated at

low outdoor temperatures ............................................ 67

12.3.7 Symptom: The pressure at the tapping point is

temporarily unusual high.............................................. 67

12.3.8 Symptom: Decoration panels are pushed away due

to a swollen tank .......................................................... 67

12.3.9 Symptom: Tank disinfection function is NOT

completed correctly (AH-error)..................................... 67

12.4 Solving problems based on error codes ..................................... 68

12.4.1 Error codes: Overview ................................................. 68

13 Disposal 70

13.1 Overview: Disposal..................................................................... 70

13.2 About pump down ...................................................................... 70

13.3 To pump down............................................................................ 70

14 Technical data 71

14.1 Overview: Technical data ........................................................... 71

14.2 Dimensions and service space................................................... 71

14.2.1 Dimensions: Outdoor unit ............................................ 71

14.2.2 Service space: Outdoor unit......................................... 75

14.2.3 Dimensions and service space: Indoor unit ................. 77

14.3 Center of gravity ......................................................................... 78

14.3.1 Center of gravity: Outdoor unit..................................... 78

14.4 Components ............................................................................... 79

14.4.1 Components: Outdoor unit........................................... 79

14.4.2 Components: Indoor unit.............................................. 81

14.4.3 Components: Switch box (indoor unit) ......................... 81

14.5 Piping diagram ........................................................................... 82

14.5.1 Piping diagram: Outdoor unit ....................................... 82

14.5.2 Piping diagram: Indoor unit .......................................... 83

14.6 Wiring diagram ........................................................................... 84

14.6.1 Wiring diagram: Outdoor unit ....................................... 84

14.6.2 Wiring diagram: Indoor unit.......................................... 92

14.7 Technical specifications ............................................................. 97

14.7.1 Technical specifications: Outdoor unit ......................... 97

14.7.2 Technical specifications: Indoor unit ............................111

14.8 Operation range .........................................................................114

14.8.1 Operation range: Heating and cooling .........................114

14.8.2 Operation range: Domestic hot water ..........................115

14.9 ESP curve ..................................................................................116

14.9.1 ESP curve: Indoor unit .................................................116

15 Glossary 117

16 Field settings table 118

1 General safety precautions

1.1 About 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.

1 General safety precautions

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

1.1.1 Meaning of warnings and symbols

DANGER

Indicates a situation that results in death or serious injury.

DANGER: RISK OF ELECTROCUTION

Indicates a situation that could result in electrocution.

DANGER: RISK OF BURNING

Indicates a situation that could result in burning because of

extreme hot or cold temperatures.

WARNING

Indicates a situation that could result in death or serious

injury.

CAUTION

Indicates a situation that could result in minor or moderate

injury.

NOTICE

Indicates a situation that could result in equipment or

property damage.

INFORMATION

Indicates useful tips or additional information.

1.2 For the installer

1.2.1 General

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

dealer.

NOTICE

Improper installation or attachment of equipment or

accessories could result in electric shock, short-circuit,

leaks, fire or other damage to the equipment. Only use

accessories, optional equipment and spare parts made or

approved by Daikin.

WARNING

Make sure installation, testing and applied materials

comply with applicable legislation (on top of the

instructions described in the Daikin documentation).

CAUTION

Wear adequate personal protective equipment (protective

gloves, safety glasses,…) when installing, maintaining or

servicing the system.

WARNING

Tear apart and throw away plastic packaging bags so that

nobody, especially children, can play with them. Possible

risk: suffocation.

DANGER: RISK OF BURNING

▪ Do NOT touch the refrigerant piping, water piping or

internal parts during and immediately after operation. It

could be too hot or too cold. Give it time to return to

normal temperature. If you must touch it, wear

protective gloves.

▪ Do NOT touch any accidental leaking refrigerant.

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 aluminum fins of the unit.

NOTICE

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

unit.

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

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.

1.2.2 Installation site

▪ Provide sufficient space around the unit for servicing and air

circulation.

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

vibration.

▪ Make sure the area is well ventilated.

▪ Make sure the unit is level.

Do NOT install the unit in the following places:

▪ In potentially explosive atmospheres.

▪ In places where there is machinery that emits electromagnetic

waves. Electromagnetic waves may disturb the control system,

and cause malfunction of the equipment.

▪ In places where there is a risk of fire due to the leakage of

flammable gases (example: thinner or gasoline), carbon fibre,

ignitable dust.

▪ In places where corrosive gas (example: sulphurous acid gas) is

produced. Corrosion of copper pipes or soldered parts may cause

the refrigerant to leak.

1.2.3 Refrigerant

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.

1 General safety precautions

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

WARNING

During tests, NEVER pressurize the product with a

pressure higher than the maximum allowable pressure (as

indicated on the nameplate of the unit).

WARNING

Take sufficient precautions in case of refrigerant leakage. If

refrigerant gas leaks, ventilate the area immediately.

Possible risks:

▪ Excessive refrigerant concentrations in a closed room

can lead to oxygen deficiency.

▪ Toxic gas may be produced if refrigerant gas comes

into contact with fire.

WARNING

Always recover the 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.

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.

▪ 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

(i.e., the cylinder is marked with

"Liquid filling siphon attached")

Charge with the cylinder upright.

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.

1.2.4 Brine

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.

1.2.5 Water

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.

1.2.6 Electrical

DANGER: RISK OF ELECTROCUTION

▪ Turn OFF all power supply before removing the

switch box cover, connecting electrical wiring or

touching electrical parts.

▪ Disconnect the power supply for more than 1 minute,

and measure the voltage at the terminals of main circuit

capacitors or electrical components before servicing.

The voltage MUST be less than 50 V DC before you

can touch electrical components. For the location of the

terminals, see the wiring diagram.

▪ Do NOT touch electrical components with wet hands.

▪ Do NOT leave the unit unattended when the service

cover is removed.

WARNING

If NOT factory installed, a main switch or other means for

disconnection, having a contact separation in all poles

providing full disconnection under overvoltage category III

condition, shall be installed in the fixed wiring.

2 About the documentation

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

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.

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

2.1 About 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:

▪ Preparation of the installation, technical specifications, 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.

2.2 Installer reference guide at a

glance

Chapter Description

General safety

precautions

Safety instructions that you must read

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

options

▪ How to identify the units

▪ 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

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

3 About the box

3.1 Overview: 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.

3.2 Outdoor unit

3.2.1 To unpack the outdoor unit

3.2.2 To handle the outdoor unit

Carry the unit slowly as shown:

102~114 kg

CAUTION

To avoid injury, do NOT touch the air inlet or aluminum fins

of the unit.

3.2.3 To remove the accessories from the

outdoor unit

1×

a1× c1×

b2× d1×

e1× f1× g1×

aOutdoor unit installation manual

bCable tie

cFluorinated greenhouse gases label

dMultilingual fluorinated greenhouse gases label

eScrew (only for ERLQ)

fThermistor fixing plate (spare) (only for ERLQ)

gThermistor fixture (only for ERLQ)

3.3 Indoor unit

3.3.1 To unpack the indoor unit

3.3.2 To 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.

4 About the units and options

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

a~e

4×

2×

6Remove the accessories.

1× 1× 1× 1×

2× 1×4×

abcd

f2×

g he

aGeneral safety precautions

bAddendum book for optional equipment

cIndoor unit installation manual

dOperation manual

eSealing ring for shut-off valve

fShut-off valve with drain/fill point

gShut-off valve

hUser interface cover

7Reinstall the top panel and the front plate.

4 About the units and options

4.1 Overview: About the units and

options

This chapter contains information about:

▪ Identifying the outdoor unit

▪ Identifying the indoor unit

▪ Combining outdoor and indoor units

▪ Combining the outdoor unit with options

▪ Combining the indoor unit with options

4.2 Identification

NOTICE

When installing or servicing several units at the same time,

make sure NOT to switch the service panels between

different models.

4.2.1 Identification label: Outdoor unit

Location

Model identification

▪ ERLQ: Contains components (insulation, bottom plate heater,…)

to prevent freeze-up in areas with low ambient temperature and

high humidity.

▪ ERHQ: Does NOT contain these components.

Example: ERLQ011CAW1

Code Explanation

ER European split outdoor pair heat pump

L H=Low water temperature – ambient zone:

0⁠~⁠−⁠10°C

L=Low water temperature – ambient zone:

−⁠10⁠~⁠−⁠20°C

Q Refrigerant R410A

011 Capacity class

CA Model series

W1 Power supply

4.2.2 Identification label: Indoor unit

Location

Model identification

Example: EHVZ04S18CB3V

Code Description

E European model

HV Floor-standing indoor unit with integrated tank

Z Dual-zone model

04 Capacity class

4 About the units and options

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

Code Description

S Integrated tank material: Stainless steel

18 Integrated tank volume

CB Model series

3V Backup heater model

4.3 Combining units and options

4.3.1 Possible options for the outdoor unit

Demand PCB (KRP58M51) (only for ERLQ)

▪ Limits the maximum current. However, this also decreases the

heating/cooling capacity of the system.

▪ Only the "Setting of demand running" function of the demand PCB

is applicable.

▪ For installation instructions, see the installation manual of the

demand PCB.

Snow cover (EK016SNC) (only for ERLQ)

▪ Prevents the outdoor unit from being snowed up.

▪ Recommended in areas with low ambient temperatures or heavy

snowfall.

▪ For installation instructions, see the installation manual of the

snow cover.

Drain plug kit (EKDK04) (only for ERHQ)

▪ Gathers the condensate from the outdoor unit and guides it away

through 1 plug in the bottom plate.

▪ For ERLQ: Drain plug kit is not applicable.

▪ For ERHQ: Drain plug kit is option.

▪ Cannot be combined with bottom plate heater.

▪ For installation instructions, see the installation manual of the

drain plug kit.

Bottom plate heater (EKBPHTH16A) (only for ERHQ in

combination with C* indoor unit)

▪ Prevents freeze-up of the bottom plate.

▪ Recommended in areas with low ambient temperature and high

humidity.

▪ For ERLQ: Bottom plate heater is standard (factory-mounted).

▪ For ERHQ: Bottom plate heater is option.

▪ Cannot be combined with drain plug kit.

▪ If you install EKBPHTH16A, you also have to install the digital I/O

PCB (EKRP1HB).

▪ For installation instructions, see the installation manual of the

bottom plate heater and addendum book for optional equipment.

4.3.2 Possible 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 "7.9.11 To connect the user

interface"on page37.

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)

You can connect an optional room thermostat to the indoor unit. This

thermostat can either be wired (EKRTWA) or wireless (EKRTR1).

For installation instructions, see the installation manual of the room

thermostat and addendum book for optional equipment.

Remote sensor for wireless thermostat (EKRTETS)

You can use a wireless indoor temperature sensor (EKRTETS) only

in combination with the wireless thermostat (EKRTR1).

For installation intructions, see the installation manual of the room

thermostat and addendum book for optional equipment.

Digital I/O PCB (EKRP1HB)

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

▪ Alarm output

▪ Space heating On/OFF output

▪ Changeover to external heat source

▪ Only for EHVZ16S18 model: Control signal for bottom plate heater

kit EKBPHTH16A.

For installation instructions, see the installation manual of the digital

I/O PCB and addendum book for optional equipment.

Demand PCB (EKRP1AHTA)

To enable the power saving consumption control by digital inputs

you must install the demand PCB.

For installation instructions, see the installation manual of the

demand PCB and addendum book for optional equipment.

Remote indoor sensor (KRCS01-1)

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

temperature sensor.

As an option the remote indoor sensor can be installed to measure

the room temperature on another location.

For installation instructions, see the installation manual of the remote

indoor sensor and addendum book for optional equipment.

5 Application guidelines

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

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39.

Heat pump convector (FWXV)

For providing space heating/cooling, 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.

4.3.3 Possible combinations of indoor unit and

outdoor unit

Outdoor unit Indoor unit

EHVZ16

ERHQ011+ERLQ011 O

ERHQ014+ERLQ014 O

ERHQ016+ERLQ016 O

5 Application guidelines

5.1 Overview: 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39.

This chapter contains application guidelines for:

▪ Setting up the space heating system

▪ Setting up the domestic hot water tank

▪ Setting up the energy metering

▪ Setting up the power consumption

▪ Setting up an external temperature sensor

5.2 Setting 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.5.1.2] to 1.

5.2.1 Multiple rooms – TwoLWT zones

This unit is designed to deliver water at 2 different temperatures. A

typical installation consists of underfloor heating at a lower

temperature and radiators at a higher water temperature.

In this document:

▪ Main zone = Zone with the lowest design temperature

▪ Additional zone = Zone with the highest design temperature

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

5 Application guidelines

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

HPC1

FHL1 FHL2 FHL3

HPC2 HPC3

a b c

g hf

d e

AAdditional leaving water temperature zone

BRoom 1

CRoom 2

DMain leaving water temperature zone

ERoom 3

aOutdoor unit

bIndoor unit

cHeat exchanger

dBackup heater

eMotorised 3-way valve (mixing the main zone)

fAdditional pump

gMain pump

hShut-off valve

iCollector (field supply)

jRemote controller of the heat pump convectors (field

supply)

kUser interface (field supply)

HPC1...3 Heat pump convectors (field supply)

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

▪ For the main zone: the room temperature is controlled by the user

interface, which is used as room thermostat.

▪ For the additional zone:

▪ The external thermostat is directly connected to the indoor unit.

▪ The desired room temperature is set via the external thermostat

and the thermostatic valves of the radiators in each room.

▪ The heating demand signal from the external thermostat is

connected to the digital input on the indoor unit (X2M/1a and

X2M/4). The indoor unit will only supply the desired additional

leaving water temperature when there is an actual demand.

Configuration

Setting Value

Unit temperature control:

▪ #: [A.2.1.7]

▪ Code: [C-07]

2 (RT control): Unit operation is

decided based on the ambient

temperature of the user interface.

Note:

▪ Main room = user interface

used as room thermostat

functionality

▪ Other rooms = external room

thermostat functionality

Number of water temperature

zones:

▪ #: [A.2.1.8]

▪ Code: [7-02]

1 (2 LWT zones): Main +

additional

Setting Value

In case of heatpump convectors:

External room thermostat for the

additional zone:

▪ #: [A.2.2.5]

▪ Code: [C-06]

1 (Thermo ON/OFF): When the

used external room thermostat or

heatpump convector can only

send a thermo ON/OFF

condition.

Shut-off valve output Set to follow the thermo demand

of the main zone.

Benefits

▪Comfort. The smart room thermostat functionality can decrease

or increase the desired leaving water temperature based on the

actual room temperature (modulation).

▪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.

5.3 Setting up the domestic hot water

tank

5.3.1 System layout – Integrated DHW tank

a b c d ge h ii

HPC1

FHL1 FHL2 FHL3

HPC2 HPC3

aOutdoor unit

bIndoor unit

cHeat exchanger

dBackup heater

eMotorised 3‑wave valve (switch between space heating

and domestic hot water)

fMotorised 3‑way valve (mixing the main zone)

gMain pump

hAdditional pump

iShut-off valve

jCollector (field supply)

kDomestic hot water tank

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

UI User interface (field supply)

HPC1...3 Heat pump convectors (field supply)

5.3.2 Selecting 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).

5 Application guidelines

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

Selecting the desired temperature for the DHW tank consists of:

1 Determining the DHW consumption (equivalent hot water

volume at 40°C).

2 Determining the desired temperature for the DHW tank.

Energy saving tips

▪ If the DHW consumption differs from day to day, you can program

a weekly schedule with different desired DHW tank temperatures

for each day.

▪ The lower the desired DHW tank temperature, the more cost

effective. By selecting a larger DHW tank, you can lower the

desired DHW tank temperature.

▪ The heatpump itself can produce domestic hot water of maximum

55°C (50°C if outdoor temperature is low). The electrical

resistance integrated in the heat pump can increase this

temperature. However, this consumes more energy. Daikin

recommends to set the desired DHW tank temperature below

55°C to avoid using the backup heater.

▪ 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

per day?

1shower = 10min×10l/min =

100l

How many baths are needed per

day?

1bath = 150l

How much water is needed at the

kitchen sink per day?

1sink = 2min×5l/min = 10l

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

V1DHW consumption (equivalent hot water volume at 40°C)

V2Required DHW tank volume if only heated once

T2DHW tank temperature

T1Cold water temperature

5.3.3 Setup and configuration – DHW tank

▪ For large DHW consumptions, you can heat up the DHW tank

several times during the day.

▪ To heat up the DHW tank to the desired DHW tank temperature,

you can use the following energy sources:

▪ Thermodynamic cycle of the heatpump

▪ Electrical backup heater

▪ For more information about optimizing the energy consumption for

producing domestic hot water, see "8Configuration"on page39.

5.3.4 DHW pump for instant hot water

Setup

aIndoor unit

bDHW tank

cDHW pump (field supply)

fShower (field supply)

gCold water

hDomestic hot water OUT

iRecirculation connection

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

the tap.

▪ The DHW pump and the installation are field supply and the

responsibility of the installer.

▪ For more information about connecting the recirculation

connection: see "7Installation"on page21.

Configuration

▪ For more information, see "8Configuration"on page39.

▪ You can program a schedule to control the DHW pump via the

user interface. For more information, see the user reference

guide.

5.3.5 DHW pump for disinfection

Setup

bd f

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

▪ 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 60°C. If

applicable legislation requires higher temperature for disinfection,

you can connect a DHW pump and heater element as shown

above.

▪ If applicable legislation requires disinfection of the water piping

until the tapping point, you can connect a DHW pump and heater

element (if needed) as shown above.

▪ To ensure a complete disinfection, you have to open the tapping

point.

5 Application guidelines

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

WARNING

When opening the tapping point, the water temperature

can be up to 55°C.

Configuration

The indoor unit can control DHW pump operation. For more

information, see "8Configuration"on page39.

5.4 Setting 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.

5.4.1 Produced heat

INFORMATION

The sensors used to calculate the produced heat are

calibrated automatically.

▪ The produced heat is calculated internally based on:

▪ The leaving and entering water temperature

▪ The flow rate

▪ Setup and configuration: No additional equipment needed.

5.4.2 Consumed energy

You can use the following methods to determine the consumed

energy:

▪ Calculating

▪ Measuring

INFORMATION

You cannot combine calculating the consumed energy

(example: for backup heater) and measuring the

consumed energy (example: for outdoor unit). If you do so,

the energy data will be invalid.

Calculating the consumed energy

▪ Only applicable for EHVZ04+08.

▪ The consumed energy is calculated internally based on:

▪ The actual power input of the outdoor unit

▪ The set capacity of the backup 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).

Measuring the consumed energy

▪ Applicable for all models.

▪ Preferred method because of higher accuracy.

▪ Requires external power meters.

▪ Setup and configuration:

▪ For the specifications of each type of meter, see "14Technical

data"on page71.

▪ When using electrical power meters, set the number of pulses/

kWh for each power meter via the user interface. Consumed

energy data for EHVZ16 model 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.

5.4.3 Normal kWh rate power supply

General rule

One power meter that covers the entire system is sufficient.

Setup

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

Power meter type

In case of… Use a… power meter

▪ Single-phase outdoor unit

▪ Backup heater supplied from a

single-phase grid

Single-phase

Three-phase outdoor unit Three-phase

Example

Single-phase power meter Three-phase power meter

580150

c c

fed

A B

A Outdoor unit

B Indoor unit

a Electrical cabinet (L1/N)

b Power meter (L1/N)

c Fuse (L1/N)

d Outdoor unit (L1/N)

e Indoor unit (L1/N)

f Backup heater (L1/N)

580150

gfe

A B

c d



A Outdoor unit

B Indoor unit

a Electrical cabinet (L1/L2/L3/N)

b Power meter (L1/L2/L3/N)

c Fuse (L1/L2/L3/N)

d Fuse (L1/N)

e Outdoor unit (L1/L2/L3/N)

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

g Backup 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.

5 Application guidelines

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

▪ 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 "5.4.4 Preferential kWh rate power supply" on page 14 for

an example with two power meters.

5.4.4 Preferential kWh rate power supply

General rule

▪ Power meter1: Measures the outdoor unit.

▪ Power meter 2: Measures the rest (i.e. indoor unit and backup

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: Single- or three-phase power meter according to

the power supply of the outdoor unit.

▪ Power meter2: Use a single-phase power meter.

5.5 Setting up the power consumption

control

▪ The power consumption control:

▪ Is only applicable for EHVZ04+08.

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

(sum of outdoor unit, indoor unit and 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

5.5.1 Permanent power limitation

Permanent power limitation is useful to assure a maximum power or

current input of the system. In some countries, legislation limits the

maximum power consumption for space heating and DHW

production.

DI a

PiPower input

tTime

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39):

▪ 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 the backup heater step1.

5.5.2 Power limitation activated by digital

inputs

Power limitation is also useful in combination with an energy

management system.

The power or current of the entire Daikin system is limited

dynamically by digital inputs (maximum four steps). Each power

limitation level is set via the user interface by limiting one of the

following:

▪ Current (in A)

▪ Power input (in kW)

The energy management system (field supply) decides the activation

of a certain power limitation level. Example: To limit the maximum

power of the entire house (lighting, domestic appliances, space

heating…).

A B

A8P

AOutdoor unit

BIndoor unit

CEnergy management system

aPower limitation activation (4 digital inputs)

bBackup heater

DI4

DI3

DI1 a

PiPower input

tTime

DI Digital inputs (power limitation levels)

aPower limitation active

bActual power input

Setup

▪ Demand PCB (option EKRP1AHTA) needed.

6 Preparation

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

▪ 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39):

▪ 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.

5.5.3 Power limitation process

The outdoor unit has better efficiency than the electrical heater.

Therefore, the electrical heater is limited and turned OFF first. The

system limits power consumption in the following order:

1 Turns OFF the backup heater.

2 Limits the outdoor unit.

3 Turns OFF the outdoor unit.

Example

If the configuration is as follows: Power limitation level does NOT

allow operation of backup heater (step1).

Then power consumption is limited as follows:

A B

PhProduced heat

CeConsumed energy

AOutdoor unit

BBackup heater

aLimited outdoor unit operation

bFull outdoor unit operation

cBackup heater step1 turned ON

5.6 Setting 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 39), 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.

6 Preparation

6.1 Overview: 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

6.2 Preparing 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 Preparation

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

NOTICE

This unit is designed for operation on 2 temperature zones:

▪ underfloor heating in the main zone (water

temperature 35°C), this is the zone with the lowest

water temperature,

▪ radiators in the additional zone (water temperature

45°C), this is the zone with the highest water

temperature.

6.2.1 Installation site requirements of the

outdoor unit

INFORMATION

Also read the following requirements:

▪ General installation site requirements. See the

"General safety precautions" chapter.

▪ Service space requirements. See the "Technical data"

chapter.

▪ Refrigerant piping requirements (length, height

difference). See further in this "Preparation" chapter.

See "14.2 Dimensions and service space" on page 71 for more

detailed information about spacing guidelines.

▪ Select a place where rain can be avoided as much as possible.

▪ Take care that in the event of a water leak, water cannot cause

any damage to the installation space and surroundings.

Do NOT install the unit in the following places:

▪ Sound sensitive areas (e.g. near a bedroom and the like), so that

the operation noise will cause no trouble.

Note: If the sound is measured under actual installation

conditions, the measured value 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:

▪ in coastal areas or other places where the air contains high levels

of salt. Corrosion may occur,

▪ where the voltage fluctuates a lot,

▪ in vehicles or vessels,

▪ where acidic or alkaline vapour is present.

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.

aBaffle plate

bPrevailing wind direction

cAir outlet

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.

6.2.2 Additional 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.

INFORMATION

You can use the optional snow cover (EK016SNC).

aSnow cover or shed

bPedestal (minimum height = 150mm)

cPrevailing wind direction

dAir outlet

6.2.3 Installation site requirements of the

indoor unit

INFORMATION

Also read the precautions and requirements in the

"General safety precautions" chapter.

▪ Mind the measurement guidelines:

6 Preparation

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

Maximum refrigerant piping length between indoor

unit and outdoor unit

ERHQ: 75m

(95m)(a)

ERLQ: 50m

(70m)(a)

Minimum refrigerant piping length between indoor

unit and outdoor unit

3m

Maximum height difference between indoor unit and

outdoor unit

30m

(a) Parenthesised figure represents the equivalent length.

▪ Mind the following spacing installation guidelines:

>500

>10>10

(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 and the like), 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.

6.3 Preparing refrigerant piping

6.3.1 Refrigerant 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 Ø9.5mm (3/8")

Gas piping Ø15.9mm (5/8")

▪Piping temper grade and thickness:

Outer diameter

(Ø)

Temper grade Thickness (t)(a)

9.5mm (3/8") Annealed (O) ≥0.8mm

15.9mm (5/8") Annealed (O) ≥1.0mm

(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.

6.3.2 Refrigerant 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

Ambient

temperature

Humidity Minimum thickness

≤30°C 75% to 80% RH 15mm

>30°C ≥80% RH 20mm

6.4 Preparing water piping

6.4.1 Water circuit requirements

INFORMATION

Also read the precautions and requirements in the

"General safety precautions" chapter.

▪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71 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 during defrost/backup heater

operation

04+08 models 12l/min

16 model 15l/min

6 Preparation

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

▪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.

60°C

55°C

a b c d ge h ii

HPC1

FHL1 FHL2 FHL3

HPC2 HPC3

aOutdoor unit

bIndoor unit

cHeat exchanger

dBackup heater

eMotorised 3‑way valve (switch between space heating and

domestic hot water)

fMotorised 3‑way valve (mixing the main zone)

gMain pump

hAdditional pump

iShut-off valve

jCollector (field supply)

kDomestic hot water tank

HPC1...3 Heat pump convector (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

"7.8.5 To connect the pressure relief valve to the drain" on

page31.

▪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 – 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

both heating water circuits. 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.

▪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51.

▪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

aRecirculation connection

bHot water connection

cShower

dRecirculation pump

6.4.2 Formula 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)

6.4.3 To 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 for EHVZ04+08 and 20litre for EHVZ16, the internal water

volume of the indoor unit NOT included. Do NOT split up the

minimum water volume over the 2 temperature zones.

6 Preparation

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

It is sufficient to foresee the minimum water volume on the main

zone. In case of underfloor heating, this is easily done by 1 floor

heating loop that never will be closed by a (remotely) controlled

valve.

It is NOT required to foresee the minimum water volume on the

additional zone.

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.

FHL1 FHL2 FHL3

M2 M3

T2 T3

HPC1 HPC2 HPC3

a b c

g hf

d e

aOutdoor unit

bIndoor unit

cHeat exchanger

dBackup heater

eMotorised 3‑way valve (mixing the main zone)

fAdditional pump

gMain pump

hShut-off valve

iCollector (field supply)

jBy-pass valve (field supply)

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

HPC1...3 Heat pump convector (field supply)

T1...3 Individual room thermostat (optional)

M1...3 Individual motorised valve to control loop FHL1...3 and

HPC1...3 (field supply)

Maximum water volume

Use the following graph to determine the maximum water volume for

the calculated pre-pressure.

0.3

0.5

1.5

2.5

100500

150 200 250 300 350 400 450

aPre-pressure (bar)

bMaximum water volume (l)

Example: Maximum water volume and expansion vessel pre-

pressure

Installation

height

difference(a)

Water volume

≤280l >280l

≤7m No pre-pressure

adjustment is required.

Do the following:

▪ Decrease the pre-

pressure.

▪ Check if the water

volume does NOT

exceed the maximum

allowed water volume.

>7m Do the following:

▪ Increase the pre-

pressure.

▪ Check if the water

volume does NOT

exceed the maximum

allowed water volume.

The expansion vessel of

the indoor unit is too

small for the installation.

In this case, it is

recommended to install

an extra vessel outside

the unit.

(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.

Minimum flow rate

Check that the minimum flow rate (required during defrost/backup

heater operation) in the installation is guaranteed in all conditions on

each zone separately.

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 during defrost/backup heater

operation

04+08 models 12l/min

16 model 15l/min

See the recommended procedure as described in "9.4 Checklist

during commissioning"on page60.

6.4.4 Changing the pre-pressure of the

expansion vessel

NOTICE

Only a licensed installer may adjust the pre-pressure of the

expansion vessel.

When changing the default pre-pressure of the expansion vessel

(1bar) is required, take following guidelines into account:

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

▪ Inappropriate setting of the expansion vessel pre-pressure will

lead to malfunction of the system.

Changing the pre-pressure of the expansion vessel should be done

by releasing or increasing nitrogen pressure through the schräder

valve of the expansion vessel.

6 Preparation

Installer reference guide

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1 – 2015.02

aSchräder valve

6.4.5 To check the water volume: Examples

Example 1

The indoor unit is installed 5m below the highest point in the water

circuit. The total water volume in the water circuit is 100l.

No actions or adjustments are required.

Example 2

The indoor unit is installed at the highest point in the water circuit.

The total water volume in the water circuit is 350l.

Actions:

▪ Because the total water volume (350 l) is more than the default

water volume (280l), the pre-pressure must be decreased.

▪ The required pre-pressure is:

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

▪ The corresponding maximum water volume at 0.3 bar is 410 l.

(See the graph in the chapter above).

▪ Because 350 l is lower than 410 l, the expansion vessel is

appropriate for the installation.

6.5 Preparing electrical wiring

6.5.1 About preparing electrical wiring

INFORMATION

Also read the precautions and requirements in the

"General safety precautions" chapter.

INFORMATION

Also read "7.9.5 Specifications of standard wiring

components"on page33.

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 should have a dedicated power supply.

WARNING

ALWAYS use multicore cable for power supply cables.

6.5.2 About preferential kWh rate power supply

NOTICE

For applications with preferential kWh rate power supply:

The interruption of the outdoor unit power supply may not

be more than 2 hours to guarantee optimised startup

conditions for the compressor.

Electricity companies throughout the world work hard to provide

reliable electric service at competitive prices and are often

authorized to bill clients at benefit rates. E.g. time-of-use rates,

seasonal rates, Wärmepumpentarif in Germany and Austria, ...

This equipment allows for connection to such preferential kWh rate

power supply delivery systems.

Consult with the electricity company acting as provider at the site

where this equipment is to be installed to know whether it is

appropriate to connect the equipment in one of the preferential kWh

rate power supply delivery systems available, if any.

When the equipment is connected to such preferential kWh rate

power supply, the electricity company is allowed to:

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

▪ demand that the equipment only consumes a limited amount of

electricity during certain periods of time.

The indoor unit is designed to receive an input signal by which the

unit switches into forced off mode. At that moment, the outdoor unit

compressor will not operate.

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

is different.

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