Daikin ERHQ011-014-016BA, ERLQ011-014-016CA, EHVZ16S18CB Installer reference guide

+

Installer reference guide

Daikin Altherma – Low temperature split

ERHQ011-014-016BA
ERLQ011-014-016CA
EHVZ16S18CB

Installer reference guide

Daikin Altherma – Low temperature split

English

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.............................. 3

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 ................................................................................. 8

3.3.1 To unpack the indoor unit ........................................... 8

3.3.2 To remove the accessories from the indoor unit......... 8

4 About the units and options 8

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

4.2 Identification .............................................................................. 9

4.2.1 Identification label: Outdoor unit ................................. 9

4.2.2 Identification label: Indoor unit .................................... 9

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 11

5.1 Overview: Application guidelines............................................... 11

5.2 Setting up the space heating system ........................................ 11

5.2.1 Multiple rooms – TwoLWT zones............................... 11

5.3 Setting up the domestic hot water tank ..................................... 12

5.3.1 System layout – Integrated DHW tank........................ 12

5.3.2 Selecting the volume and desired temperature for

the DHW tank.............................................................. 12

5.3.3 Setup and configuration – DHW tank.......................... 13

5.3.4 DHW pump for instant hot water................................. 13

5.3.5 DHW pump for disinfection ......................................... 13

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................................... 14

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 ................. 15

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

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

6 Preparation 16

6.1 Overview: Preparation............................................................... 16

6.2 Preparing installation site .......................................................... 16

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 ....................................... 17

6.2.3 Installation site requirements of the indoor unit .......... 17

6.3 Preparing refrigerant piping....................................................... 18

6.3.1 Refrigerant piping requirements.................................. 18

6.3.2 Refrigerant piping insulation ........................................ 18

6.4 Preparing water piping ............................................................... 18

6.4.1 Water circuit requirements ........................................... 18

6.4.2 Formula to calculate the expansion vessel pre-

pressure ....................................................................... 19

6.4.3 To check the water volume and flow rate .................... 19

6.4.4 Changing the pre-pressure of the expansion vessel.... 20

6.4.5 To check the water volume: Examples ........................ 21

6.5 Preparing electrical wiring .......................................................... 21

6.5.1 About preparing electrical wiring.................................. 21

6.5.2 About preferential kWh rate power supply ................... 21

6.5.3 Overview of electrical connections except external

actuators ...................................................................... 22

6.5.4 Overview of electrical connections for external and

internal actuators ......................................................... 22

7 Installation 23

7.1 Overview: Installation ................................................................. 23

7.2 Opening the units ....................................................................... 23

7.2.1 About opening the units ............................................... 23

7.2.2 To open the outdoor unit.............................................. 23

7.2.3 To open the indoor unit ................................................ 23

7.2.4 To open the switch box cover of the indoor unit .......... 23

7.3 Mounting the outdoor unit........................................................... 23

7.3.1 About mounting the outdoor unit.................................. 23

7.3.2 Precautions when mounting the outdoor unit............... 24

7.3.3 To provide the installation structure ............................. 24

7.3.4 To install the outdoor unit............................................. 24

7.3.5 To provide drainage ..................................................... 24

7.3.6 To prevent the outdoor unit from falling over ............... 25

7.4 Mounting the indoor unit............................................................. 25

7.4.1 About mounting the indoor unit.................................... 25

7.4.2 Precautions when mounting the indoor unit................. 25

7.4.3 To install the indoor unit............................................... 25

7.5 Connecting the refrigerant piping ............................................... 25

7.5.1 About connecting the refrigerant piping ....................... 25

7.5.2 Precautions when connecting the refrigerant piping.... 26

7.5.3 Guidelines when connecting the refrigerant piping...... 26

7.5.4 Pipe bending guidelines............................................... 26

7.5.5 To flare the pipe end .................................................... 26

7.5.6 To braze the pipe end .................................................. 27

7.5.7 Using the stop valve and service port .......................... 27

7.5.8 To connect the refrigerant piping to the outdoor unit ... 28

7.5.9 To connect the refrigerant piping to the indoor unit ..... 29

7.5.10 To determine if oil traps are required ........................... 29

7.6 Checking the refrigerant piping .................................................. 29

7.6.1 About checking the refrigerant piping .......................... 29

7.6.2 Precautions when checking the refrigerant piping ....... 29

7.6.3 Checking refrigerant piping: Setup............................... 29

7.6.4 To check for leaks........................................................ 29

7.6.5 To perform vacuum drying ........................................... 30

7.7 Charging refrigerant ................................................................... 30

7.7.1 About charging refrigerant ........................................... 30

7.7.2 Precautions when charging refrigerant ........................ 30

7.7.3 To determine the additional refrigerant amount........... 30

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

7.7.5 To charge additional refrigerant ................................... 31

7.7.6 To fix the fluorinated greenhouse gases label ............. 31

7.8 Connecting the water piping....................................................... 31

7.8.1 About connecting the water piping............................... 31

7.8.2 Precautions when connecting the water piping............ 31

7.8.3 To connect the water piping......................................... 31

7.8.4 To connect the recirculation piping .............................. 32

7.8.5 To connect the pressure relief valve to the drain......... 32

7.8.6 To fill the water circuit .................................................. 32

7.8.7 To fill the domestic hot water tank ............................... 33

7.8.8 To insulate the water piping ......................................... 33

7.9 Connecting the electrical wiring.................................................. 33

7.9.1 About connecting the electrical wiring.......................... 33

7.9.2 About electrical compliance ......................................... 33

Installer reference guide

2

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

1 General safety precautions

7.9.3 Precautions when connecting the electrical wiring ..... 34

7.9.4 Guidelines when connecting the electrical wiring ....... 34

7.9.5 Specifications of standard wiring components............ 34

7.9.6 To connect the electrical wiring on the outdoor unit.... 34

7.9.7 To reposition the air thermistor on the outdoor unit .... 35

7.9.8 To connect the electrical wiring on the indoor unit...... 36

7.9.9 To connect the main power supply ............................. 37

7.9.10 To connect the backup heater power supply .............. 37

7.9.11 To connect the user interface ..................................... 38

7.9.12 To connect the shut-off valve ...................................... 39

7.9.13 To connect the electrical meters ................................. 39

7.9.14 To connect the domestic hot water pump ................... 39

7.9.15 To connect the alarm output ....................................... 39

7.9.16 To connect the power consumption digital inputs ....... 40

7.9.17 To connect the safety thermostat (normal closed

contact) ....................................................................... 40

7.10 Finishing the outdoor unit installation ........................................ 40

7.10.1 To finish the outdoor unit installation .......................... 40

7.10.2 To close the outdoor unit ............................................ 41

7.11 Finishing the indoor unit installation .......................................... 41

7.11.1 To fix the user interface cover to the indoor unit ......... 41

7.11.2 To close the indoor unit............................................... 41

8 Configuration 41

8.1 Overview: Configuration ............................................................ 41

8.1.1 To connect the PC cable to the switch box................. 41

8.1.2 To access the most used commands ......................... 42

8.1.3 To copy the system settings from the first to the

second user interface.................................................. 42

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

user interface .............................................................. 43

8.1.5 Quick wizard: Set the system layout after first power

ON............................................................................... 43

8.2 Basic configuration .................................................................... 43

8.2.1 Quick wizard: Language / time and date..................... 43

8.2.2 Quick wizard: Standard............................................... 44

8.2.3 Quick wizard: Options ................................................. 45

8.2.4 Quick wizard: Capacities (energy metering) ............... 47

8.2.5 Space heating control ................................................. 48

8.2.6 Domestic hot water control ......................................... 50

8.2.7 Contact/helpdesk number........................................... 50

8.3 Advanced configuration/optimization......................................... 50

8.3.1 Space heating operation: advanced ........................... 50

8.3.2 Domestic hot water control: advanced........................ 53

8.3.3 Heat source settings ................................................... 56

8.3.4 System settings........................................................... 57

8.4 Menu structure: Overview user settings .................................... 61

8.5 Menu structure: Overview installer settings............................... 62

9 Commissioning 63

9.1 Overview: Commissioning......................................................... 63

9.2 Precautions when commissioning ............................................. 63

9.3 Checklist before commissioning................................................ 63

9.4 Checklist during commissioning ................................................ 63

9.4.1 To check the minimum flow rate ................................. 64

9.4.2 Air purge function........................................................ 64

9.4.3 To perform a test run .................................................. 65

9.4.4 To perform an actuator test run .................................. 65

9.4.5 Underfloor heating screed dryout................................ 66

10 Hand-over to the user 67

11 Maintenance and service 67

11.1 Overview: Maintenance and service ......................................... 67

11.2 Maintenance safety precautions................................................ 67

11.2.1 Opening the indoor unit............................................... 67

11.3 Checklist for yearly maintenance of the outdoor unit ................ 67

11.4 Checklist for yearly maintenance of the indoor unit................... 67

11.4.1 To drain the domestic hot water tank .......................... 68

12 Troubleshooting 69

12.1 Overview: Troubleshooting......................................................... 69

12.2 Precautions when troubleshooting ............................................. 69

12.3 Solving problems based on symptoms....................................... 69

12.3.1 Symptom: The unit is NOT heating as expected ......... 69

12.3.2 Symptom: The compressor does NOT start (space

heating or domestic water heating).............................. 69

12.3.3 Symptom: The pump is making noise (cavitation) ....... 70

12.3.4 Symptom: The pressure relief valve opens.................. 70

12.3.5 Symptom: The water pressure relief valve leaks ......... 70

12.3.6 Symptom: The space is NOT sufficiently heated at

low outdoor temperatures ............................................ 70

12.3.7 Symptom: The pressure at the tapping point is

temporarily unusually high ........................................... 71

12.3.8 Symptom: Decoration panels are pushed away due

to a swollen tank .......................................................... 71

12.3.9 Symptom: Tank disinfection function is NOT

completed correctly (AH-error)..................................... 71

12.4 Solving problems based on error codes ..................................... 71

12.4.1 Error codes: Overview ................................................. 71

13 Disposal 73

13.1 Overview: Disposal..................................................................... 73

13.2 About pump down ...................................................................... 73

13.3 To pump down............................................................................ 73

14 Technical data 74

14.1 Piping diagram: Outdoor unit...................................................... 74

14.2 Piping diagram: Indoor unit ........................................................ 75

14.3 Wiring diagram: Outdoor unit ..................................................... 76

14.4 Wiring diagram: Indoor unit ........................................................ 77

14.5 ESP curve: Indoor unit ............................................................... 79

15 Glossary 81

16 Field settings table 82

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.

1.1.1 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.

DANGER: RISK OF EXPLOSION

Indicates a situation that could result in explosion.

WARNING

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

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

3

1 General safety precautions

WARNING: FLAMMABLE MATERIAL

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.

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.

1.2 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 aluminium 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. Do NOT block any

ventilation openings.

▪ 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.

WARNING

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

Installer reference guide

4

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

1 General safety precautions

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.

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.

▪ 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.

A siphon tube is NOT present Charge with the cylinder upside

down.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

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, MUST be installed in the fixed wiring.

Installer reference guide

5

2 About the documentation

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

2.1 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, 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/product­information/

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).

2.2 Installer reference guide at a glance

Chapter Description

General safety
precautions

About the documentation What documentation exists for the

About the box How to unpack the units and remove

About the units and
options

Application guidelines Various installation setups of the system

Preparation What to do and know before going

Installation What to do and know to install the

Configuration What to do and know to configure the

Safety instructions that you must read
before installing

installer

their accessories

▪ How to identify the units

▪ Possible combinations of units and

options

on‑site

system

system after it is installed

Installer reference guide

6

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

3 About the box

21

102~114 kg

1×

2

1

a

1×

c

1×

b

2×

d

1×

e

1×

f

1×

g

1×

Chapter Description

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

3.1 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:

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

CAUTION

To avoid injury, do NOT touch the air inlet or aluminium
fins of the unit.

3.2.3 To remove the accessories from the outdoor unit

a Outdoor unit installation manual
b Cable tie
c Fluorinated greenhouse gases label
d Multilingual fluorinated greenhouse gases label
e Screw (only for ERLQ)

f Thermistor fixing plate (spare) (only for ERLQ)

g Thermistor fixture (only for ERLQ)

Installer reference guide

7

4 About the units and options

a~e+i

h

f+g

5

4

1

2

3

4

4×

2×

1×

1× 1× 1× 1×

2× 1×4×

a b c d

f

2×

g h ie

3.3 Indoor unit

3.3.1 To unpack the indoor unit

3.3.2 To remove the accessories from the indoor unit

1 Remove the screws at the top of the unit.

2 Remove the top panel.

3 Remove the screws at the front of the unit.

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

5 Remove 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.

6 Remove the accessories.

a General safety precautions
b Addendum book for optional equipment
c Indoor unit installation manual
d Operation manual
e Sealing ring for shut-off valve

f Shut-off valve with drain/fill point
g Shut-off valve
h User interface cover

i 2 screws for fixing the user interface.

7 Reinstall 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

Installer reference guide

8

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

4 About the units and 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

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.

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

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

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:

Installer reference guide

9

4 About the units and options

▪ 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38.

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:

▪ 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.

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41.

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.

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.

4.3.3 Possible combinations of indoor unit and outdoor unit

Outdoor unit Indoor unit

EHVZ16

ERHQ011+ERLQ011 O

ERHQ014+ERLQ014 O

ERHQ016+ERLQ016 O

Installer reference guide

10

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

5 Application guidelines

j

k

j

HPC1

FHL1 FHL2 FHL3

HPC2 HPC3

B

A

C

E

D

M

a b c

g hf

d e

i

i

hh

h

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41.

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.6.C] 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:

Living room (main zone) Underfloor heating: 35°C

Room (zone) Heat emitters: Design

temperature

Room (zone) Heat emitters: Design

temperature

Bed rooms (additional zone) Heat pump convectors: 45°C

Setup

A Additional leaving water temperature zone
B Room 1
C Room 2
D Main leaving water temperature zone
E Room 3

a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Motorised 3-way valve (mixing the main zone)

f Additional pump
g Main pump
h Shut-off valve

i Collector (field supply)

j Remote controller of the heat pump convectors (field

supply)

k User 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

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

11

5 Application guidelines

M

M

a b c d ge h ii

i

j

j

fki

HPC1

UI

FHL1 FHL2 FHL3

HPC2 HPC3

Setting Value

Number of water temperature
zones:

1 (2 LWT zones): Main +
additional

▪ #: [A.2.1.8]

▪ Code: [7-02]

In case of heatpump convectors:

External room thermostat for the
additional zone:

▪ #: [A.2.2.5]

1 (Thermo ON/OFF): When the
used external room thermostat or
heatpump convector can only
send a thermo ON/OFF
condition.

▪ Code: [C-06]

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

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).

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:

a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Motorised 3‑wave valve (switch between space heating

and domestic hot water)

f Motorised 3‑way valve (mixing the main zone)
g Main pump
h Additional pump

i Shut-off valve
j Collector (field supply)

k Domestic hot water tank

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

UI User interface (field supply)

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

Installer reference guide

12

Question Typical water volume

How many showers are needed
per day?

How many baths are needed per

1shower = 10min×10l/min =
100l

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

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

5 Application guidelines

c
f

a
b

g

h

i

c
a
b

d f

e g

h

i

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41.

5.3.4 DHW pump for instant hot water

Setup

a Indoor unit

b DHW tank

c DHW pump (field supply)

f Shower (field supply)

g Cold water
h Domestic hot water OUT

i Recirculation 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23.

Configuration

▪ For more information, see "8Configuration"on page41.

▪ 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

i Recirculation 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.

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41.

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

a Indoor unit

b DHW tank

c DHW pump (field supply)

d Heater element (field supply)

e Non‑return valve (field supply)

f Shower (field supply)

g Cold water
h Domestic hot water OUT

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

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.

Installer reference guide

13

5 Application guidelines

b

5

8

0

1

5

0

0

0

c c

fed

A B

a

b

5

8

0

1

5

0

0

0

gfe

A B

c d

a



P

i

t

DI

a

b

▪ 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: 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

Three-phase outdoor unit Three-phase

Example

Single-phase power meter Three-phase power meter

Single-phase

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 "5.4.4 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

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)

Installer reference guide

14

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)

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.

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

5 Application guidelines

a

b

A B

C

1

2

3

4

5

A8P

P

i

t

DI4

DI3

DI1

a

b

P

h

C

e

a

b

c

A B

PiPower input

t Time

DI Digital input (power limitation level)

a Power limitation active

b Actual power input

Setup and configuration

▪ No additional equipment needed.

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

user interface (for the description of all settings, see

"8Configuration"on page41):

▪ 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…).

b Actual power input

Setup

▪ Demand PCB (option EKRP1AHTA) needed.

▪ Maximum four digital inputs are used to activate the

corresponding power limitation level:

▪ DI1 = weakest limitation (highest energy consumption)

▪ DI4 = strongest limitation (lowest energy consumption)

▪ For the 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41):

▪ 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 Outdoor unit
B Indoor unit
C Energy management system

a Power limitation activation (4 digital inputs)

b Backup heater

PiPower input

t Time

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

DI Digital inputs (power limitation levels)

a Power limitation active

PhProduced heat
CeConsumed energy

A Outdoor unit
B Backup heater

a Limited outdoor unit operation
b Full outdoor unit operation
c Backup 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:

Installer reference guide

15

6 Preparation

b

c

a

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 41), 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

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.

▪ 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), 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.

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.

Installer reference guide

16

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

6 Preparation

a

b

c

d

c

d

a

b

c

b

a

b

c

c

d

>500

>10>10

(mm)

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.

a Sea wind

b Building

c Outdoor unit

d Windbreaker

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.

INFORMATION

You can use the optional snow cover (EK016SNC).

a Snow cover or shed
b Pedestal (minimum height=150mm)
c Prevailing wind direction
d Air 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:

Maximum refrigerant piping length between indoor
unit and outdoor unit

Minimum refrigerant piping length between indoor

ERHQ: 75m

ERLQ: 50m

(95m)

(70m)

(a)

(a)

3m

unit and outdoor unit

Maximum height difference between indoor unit and

30m

outdoor unit

(a) Parenthesised figure represents the equivalent length.

▪ Mind the following spacing installation guidelines:

a Baffle plate

b Prevailing wind direction

c Air 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.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

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.

Installer reference guide

17

6 Preparation

t

Ø

▪ 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.

6.3 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)

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

Temper grade Thickness (t)

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

≤30°C 75% to 80% RH 15mm

>30°C ≥80% RH 20mm

Humidity Minimum thickness

(a)

▪ 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74 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

▪ 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:

6.4 Preparing water piping

6.4.1 Water circuit requirements

INFORMATION

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

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.

Installer reference guide

18

INFORMATION

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

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

89°C

75°C

M

M

a b c d ge h ii

i

j

j

fki

HPC1

FHL1 FHL2 FHL3

HPC2 HPC3

a Outdoor unit

c
d

a b

b Indoor unit

c Heat exchanger

d Backup heater

e Motorised 3‑way valve (switch between space heating and

domestic hot water)

f Motorised 3‑way valve (mixing the main zone)
g Main pump
h Additional pump

i Shut-off valve
j Collector (field supply)

k Domestic 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32.

▪ 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.

6 Preparation

▪ 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53.

▪ 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 Recirculation connection
b Hot water connection
c Shower
d Recirculation 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.

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/cooling 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.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

19

6 Preparation

T1

M1

T1

M1

T2M2T3

M3

M

FHL1

FHL2

FHL3

M2 M3

T2 T3

HPC1 HPC2 HPC3

a b c

g hf

d e

i

i

hh

h

j

j

0.3

0.5

1

1.5

2

2.5

100500

20

150 200 250 300 350 400 450

a

b

a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Motorised 3‑way valve (mixing the main zone)

f Additional pump
g Main pump
h Shut-off valve

i Collector (field supply)
j By-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.

Installation

height

difference

(a)

≤280l >280l

>7m Do the following:

▪ Increase the pre-

pressure according to
the required
installation height
difference. The pre­pressure should

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.

increase by 0.1 bar for
each metre above 7 m.

▪ Check if the water

volume does NOT
exceed the maximum
allowed water volume.

(a) This is the height difference (m) between the highest point

of the water circuit and the indoor unit. If the indoor unit is
at the highest point of the installation, the installation height
is 0m.

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).

a Pre-pressure (bar)
b Maximum water volume (l)

Example: Maximum water volume and expansion vessel pre­pressure

Installation

height

difference

(a)

≤280l >280l

≤7m No pre-pressure

adjustment is required.

Water volume

Do the following:

▪ Decrease the pre-

pressure according to
the required installation
height difference. The
pre-pressure should
decrease by 0.1 bar for
each metre below 7 m.

▪ Check if the water

volume does NOT
exceed the maximum
allowed water volume.

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63.

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 Schrader
valve of the expansion vessel.

Installer reference guide

20

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

180 l

a

a Schrader 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 Preparation

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

ALWAYS use multicore cable for power supply cables.

6.5.2 About preferential kWh rate power supply

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34.

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.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

21

6 Preparation

1

5

8

0

1

5

0

0

0

2

a

3

1

4

5

8

0
1

5

0

0

0

2

b

3

5 3

a

b

14

5

8

0

1

5

0

0

0

5

8

0

1

5

0

0

0

2

M

a

16

21

22
19

15

20

24

23

12

6

13

17
18

6.5.3 Overview of electrical connections except external actuators

Normal power

supply

a Normal power supply
b Preferential 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)

Preferential kWh rate power supply

Power supply is
NOT interrupted

Power supply is

interrupted

During preferential
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.

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.

6.5.4 Overview 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.

Item Description Wires Maximum

running

current

3 Power supply for

See table below. —

backup heater

4 Preferential kWh rate

2

(d)

power supply (voltage
free contact)

5 Normal kWh rate power

2 6.3A

supply

User interface

6 User interface 2

(e)

Optional equipment

11 Power supply for

2

(b)

bottom plate heater

12 Room thermostat 2 or 3 100mA

13 Outdoor ambient

2

(b)

temperature sensor

14 Indoor ambient

2

(b)

temperature sensor

15 Heat pump convector 2 100mA

Field supplied components

16 Shut-off valve 2 100mA

17 Electricity meter 2 (per meter)

18 Domestic hot water

2

(b)

(b)

pump

19 Alarm output 2

20 Changeover to external

2

(b)

(b)

heat source control

21 Space heating

2

(b)

operation control

22 Power consumption

digital inputs

23 Safety thermostat for

2 (per input
signal)

2

(b)

(b)

the main zone

24 Safety thermostat for

2

(d)

the additional zone

(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.

(b)

(b)

(b)

a Indoor unit

Item Description Wires Maximum

Outdoor unit and indoor unit power supply

1 Power supply for

2 Power supply and

outdoor unit

interconnection cable to
indoor unit

Installer reference guide

22

2+GND or
3+GND

3

running

current

(a)

(c)

NOTICE

A safety thermostat (normal closed contact) MUST be
installed for the main zone. See "7.9.17 To connect the

safety thermostat (normal closed contact)"on page40.

Backup heater

type

Power supply Required number of

conductors

*3V 1× 230V 2+GND

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

7 Installation

3

45°~90°

(4)

2

1

1×

2

3

4

5

1

2

4×

2×

4×

7 Installation

7.1 Overview: 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:

1 Mounting the outdoor unit.

2 Mounting the indoor unit.

3 Connecting the refrigerant piping.

4 Checking the refrigerant piping.

5 Charging refrigerant.

6 Connecting the water piping.

7 Connecting the electrical wiring.

8 Finishing the outdoor installation.

9 Finishing the indoor installation.

INFORMATION

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

7.2 Opening the units

7.2.3 To open the indoor unit

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

2 Push 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.

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

5 Remove the top panel from the unit.

7.2.1 About 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.

7.2.2 To open the outdoor unit

DANGER: RISK OF ELECTROCUTION

DANGER: RISK OF BURNING

7.2.4 To open the switch box cover of the indoor unit

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

7.3 Mounting the outdoor unit

7.3.1 About mounting the outdoor unit

When

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

Installer reference guide

23

7 Installation

(mm)

>150

620

350

(345-355)

4× M12

a

20

a

4× M12

≥150 mm

58

16

16

71

11710270

45 376 191

a b

c

d (4×)

Typical workflow

Mounting the outdoor unit typically consists of the following stages:

1 Providing the installation structure.

2 Installing the outdoor unit.

3 Providing drainage.

4 Preventing the unit from falling over.

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

cover and baffle plates. See "Preparing installation site" in

"6Preparation"on page16.

7.3.2 Precautions when mounting the outdoor unit

INFORMATION

Also read the precautions and requirements in the
following chapters:

▪ General safety precautions

▪ Preparation

7.3.3 To 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.

Prepare 4 sets of anchor bolts, nuts and washers (field supply) as
follows:

7.3.4 To install the outdoor unit

7.3.5 To provide drainage

▪ Make sure that condensation water can be evacuated properly.

▪ Install the unit on a base to make sure that there is a proper

drainage in order to avoid ice accumulation.

▪ Prepare a water drainage channel around the foundation to drain

waste water surrounding the unit.

▪ Avoid drain water flowing over the footpath, so that it does not

become slippery in case of ambient freezing temperatures.

▪ If you install the unit on a frame, install a waterproof plate within

150 mm of the bottom side of the unit in order to prevent the
invasion of water in the unit and to avoid the drain water dripping
(see the following illustration).

Installer reference guide

24

a Make sure not to cover the drain holes of the bottom plate

of the unit.

INFORMATION

The recommended height of the upper protruding part of
the bolts is 20mm.

NOTICE

Fix the outdoor unit to the foundation bolts using nuts with
resin washers (a). If the coating on the fastening area is
stripped off, the nuts rust easily.

INFORMATION

You can use the optional drain plug kit (EKDK04) (only for
ERHQ).

NOTICE

If drain holes of the outdoor unit are covered by a mounting
base or by floor surface, raise the unit to provide a free
space of more than 150mm under the outdoor unit.

Drain holes

Model Bottom view (mm)

ERHQ_V3

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

7 Installation

45

43 378

10 60

58 16

71 16

191

117102

a b

c

d (4×)

35

36

61 99

1671

60 159154182

a b

c

d (4×)

135 kg

4×

≤1°

0°

1°1°

Model Bottom view (mm)

ERHQ_W1

ERLQ

a Discharge side

b Drain holes

c Knockout hole (piping intake - downwards route)

d Anchor points

7.3.6 To prevent the outdoor unit from falling over

In case the unit is installed in places where strong wind can tilt the
unit, take following measure:

1 Prepare 2 cables as indicated in the following illustration (field

supply).

2 Place the 2 cables over the outdoor unit.

3 Insert a rubber sheet between the cables and the outdoor unit

to prevent the cable from scratching the paint (field supply).

4 Attach the cable’s ends. Tighten those ends.

7.4.3 To install the indoor unit

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

2 Slide the indoor unit into position.

3 Adjust the height of the leveling feet to compensate for floor

irregularities. The maximum allowed deviation is 1°.

NOTICE

Do NOT tilt the unit backwards:

7.4 Mounting the indoor unit

7.4.1 About mounting the indoor unit

When

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

Typical workflow

Mounting the indoor unit typically consists of the following stages:

1 Installing the indoor unit.

7.4.2 Precautions when mounting the indoor unit

INFORMATION

Also read the precautions and requirements in the
following chapters:

▪ General safety precautions

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

▪ Preparation

7.5 Connecting the refrigerant piping

7.5.1 About connecting the refrigerant piping

Before connecting the refrigerant piping

Make sure the outdoor and indoor unit are mounted.

Typical workflow

Connecting the refrigerant piping involves:

▪ Connecting the refrigerant piping to the outdoor unit

▪ Connecting the refrigerant piping to the indoor unit

▪ Installing oil traps

▪ Insulating the refrigerant piping

Installer reference guide

25

7 Installation

a b

c

d

R=0.4~0.8

45°

±2

90°

±2

A

a b

A

▪ Keeping in mind the guidelines for:

▪ Pipe bending

▪ Flaring pipe ends

▪ Brazing

▪ Using the stop valves

7.5.2 Precautions when connecting the refrigerant piping

INFORMATION

Also read the precautions and requirements in the
following chapters:

▪ General safety precautions

▪ Preparation

DANGER: RISK OF BURNING

CAUTION

▪ Do NOT use mineral oil on flared part.

▪ Do NOT reuse piping from previous installations.

▪ NEVER install a drier to this R410A unit to guarantee

its lifetime. The drying material may dissolve and
damage the system.

NOTICE

Take the following precautions on refrigerant piping into
account:

▪ Avoid anything but the designated refrigerant to get

mixed into the refrigerant cycle (e.g. air).

▪ Only use R410A when adding refrigerant.

▪ Only use installation tools (e.g. manifold gauge set) that

are exclusively used for R410A installations to
withstand the pressure and to prevent foreign materials
(e.g. mineral oils and moisture) from mixing into the
system.

▪ Install the piping so that the flare is NOT subjected to

mechanical stress

▪ Protect the piping as described in the following table to

prevent dirt, liquid or dust from entering the piping.

▪ Use caution when passing copper tubes through walls

(see figure below).

Unit Installation period Protection method

Outdoor unit >1month Pinch the pipe

<1month Pinch or tape the pipe

Indoor unit Regardless of the

period

INFORMATION

Do NOT open the refrigerant stop valve before checking
the refrigerant piping. When you need to charge additional
refrigerant it is recommended to open the refrigerant stop
valve after charging.

7.5.3 Guidelines when connecting the refrigerant piping

Take the following guidelines into account when connecting pipes:

▪ Coat the flare inner surface with ether oil or ester oil when

connecting a flare nut. Tighten 3 or 4 turns by hand, before
tightening firmly.

▪ Always use 2 wrenches together when loosening a flare nut.

▪ Always use a spanner and torque wrench together to tighten the

flare nut when connecting the piping. This to prevent nut cracking
and leaks.

a Torque wrench
b Spanner
c Piping union
d Flare nut

Piping size

(mm)

Tightening

torque (N•m)

Flare

dimensions (A)

Flare shape

(mm)

(mm)

Ø9.5 33~39 12.8~13.2

Ø15.9 63~75 19.3~19.7

7.5.4 Pipe bending guidelines

Use a pipe bender for bending. All pipe bends should be as gentle
as possible (bending radius should be 30~40mm or larger).

7.5.5 To flare the pipe end

CAUTION

▪ Incomplete flaring may cause refrigerant gas leakage.

▪ Do NOT re-use flares. Use new flares to prevent

refrigerant gas leakage.

▪ Use flare nuts that are included with the unit. Using

different flare nuts may cause refrigerant gas leakage.

1 Cut the pipe end with a pipe cutter.

2 Remove burrs with the cut surface facing down so that the

chips do not enter the pipe.

a Cut exactly at right angles.
b Remove burrs.

3 Remove the flare nut from the stop valve and put the flare nut

on the pipe.

4 Flare the pipe. Set exactly at the position as shown in the

following illustration.

Installer reference guide

26

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

7 Installation

a b

c

a b c d e

f

f

c
d

a

b

a

b

Flare tool for

R410A (clutch

type)

Conventional flare tool

Clutch type

(Ridgid-type)

Wing nut type

(Imperial-type)

A 0~0.5mm 1.0~1.5mm 1.5~2.0mm

5 Check that the flaring is properly made.

a Flare’s inner surface must be flawless.

b The pipe end must be evenly flared in a perfect circle.

c Make sure the flare nut is fitted.

7.5.6 To braze the pipe end

The indoor unit and outdoor unit have flare connections. Connect
both ends without brazing. If brazing should be needed, take the
following into account:

▪ When brazing, blow through with nitrogen to prevent creation of

large quantities of oxidised film on the inside of the piping. This
film adversely affects valves and compressors in the refrigerating
system and prevents proper operation.

▪ Set the nitrogen pressure to 20kPa (0.2bar) (just enough so it

can be felt on the skin) with a pressure-reducing valve.

▪ Do NOT apply excessive force to the valve stem. Doing so may

break the valve body.

▪ Always make sure to secure the stop valve with a spanner, then

loosen or tighten the flare nut with a torque wrench. Do NOT place
the spanner on the stem cap, as this could cause a refrigerant
leak.

a Spanner
b Torque wrench

▪ When it is expected that the operating pressure will be low (e.g.

when cooling will be performed while the outside air temperature
is low), sufficiently seal the flare nut in the stop valve on the gas
line with silicon sealant to prevent freezing.

Silicon sealant, make sure there is no gap.

To open/close the stop valve

1 Remove the valve cover.

2 Insert a hexagon wrench (liquid side: 4mm, gas side: 6mm)

into the valve stem and turn the valve stem:

a Refrigerant piping

b Part to be brazed

c Taping

d Manual valve

e Pressure-reducing valve

f Nitrogen

▪ Do NOT use anti-oxidants when brazing pipe joints.

Residue can clog pipes and break equipment.

▪ Do NOT use flux when brazing copper-to-copper refrigerant

piping. Use phosphor copper brazing filler alloy (BCuP), which
does not require flux.
Flux has an extremely harmful influence on refrigerant piping
systems. For instance, if chlorine based flux is used, it will cause
pipe corrosion or, in particular, if the flux contains fluorine, it will
deteriorate the refrigerant oil.

7.5.7 Using the stop valve and service port

To handle the stop valve

Take the following guidelines into account:

▪ The stop valves are factory closed.

▪ The following illustration shows each part required in handling the

valve.

Counterclockwise to open.
Clockwise to close.

3 When the valve stem cannot be turned any further, stop turning.

The valve is now opened/closed.

To handle the stem cap

▪ The stem cap is sealed where indicated with the arrow. Do NOT

damage it.

▪ After handling the stop valve, tighten the stem cap, and check for

refrigerant leaks.

Item Tightening torque (N∙m)

Stem cap, liquid side 13.5~16.5

Stem cap, gas side 22.5~27.5

a Service port and service port cap

b Valve stem

c Field piping connection

d Stem cap

▪ Keep both stop valves open during operation.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

To handle the service cap

▪ Always use a charge hose equipped with a valve depressor pin,

since the service port is a Schrader type valve.

▪ After handling the service port, tighten the service port cap, and

check for refrigerant leaks.

Item Tightening torque (N∙m)

Service port cap 11.5~13.9

Installer reference guide

27

7 Installation

c

a

b
d

a

b

c

d

cc

ba

4× Ø6 mm

a

b

d

c

e

b
a

g

g

h
h

f

a

b

c

a

7.5.8 To connect the refrigerant piping to the outdoor unit

1 Do the following:

▪ Remove the service cover (a) with screw (b).
▪ Remove the piping intake plate (c) with screw (d).

2 Choose a piping route (a, b, c or d).

3 If you have chosen the downwards piping route:

▪ Drill (a, 4×) and remove the knockout hole (b).
▪ Cut out the slits (c) with a metal saw.

6 If the outdoor unit is installed above the indoor unit, cover the

stop valves (h, see above) with sealing material to prevent
condensed water on the stop valves from moving to the indoor
unit.

NOTICE

Any exposed piping might cause condensation.

7 Reattach the service cover and the piping intake plate.

8 Seal all gaps (example: a) to prevent snow and small animals

from entering the system.

4 Do the following:

▪ Connect the liquid pipe (a) to the liquid stop valve.
▪ Connect the gas pipe (b) to the gas stop valve.

5 Do the following:

▪ Insulate the liquid piping (a) and the gas piping (b).
▪ Make sure the piping and piping insulation do NOT touch the

compressor (c), the compressor terminal cover (d), and the
compressor bolts (e). If the liquid pipe insulation might touch
the compressor terminal cover, adjust the height of the
insulation (f=no insulation around the compressor terminal
cover (d)).

▪ Seal the insulation ends (sealant etc.) (g).

Installer reference guide

28

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.

NOTICE

Precautions when making knockout holes:

▪ Avoid damaging the casing.

▪ After making the knockout holes, we recommend you

remove the burrs and paint the edges and areas
around the edges using repair paint to prevent rusting.

▪ When passing electrical wiring through the knockout

holes, wrap the wiring with protective tape to prevent
damage.

a Knockout hole
b Burr
c Sealant etc.

NOTICE

Make sure to open the stop valves after installing the
refrigerant piping and performing vacuum drying. Running
the system with the stop valves closed may break the
compressor.

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

7 Installation

b a

a

b

10 m

R410A

a

b d e

f

c

7.5.9 To connect the refrigerant piping to the indoor unit

1 Connect the liquid stop valve from the outdoor unit to the

refrigerant liquid connection of the indoor unit.

a Refrigerant liquid connection

b Refrigerant gas connection

2 Connect the gas stop valve from the outdoor unit to the

refrigerant gas connection of the indoor unit.

NOTICE

It is recommended that the refrigerant piping between
indoor and outdoor unit is installed in a ducting or the
refrigerant piping is wrapped with finishing tape.

7.5.10 To determine if oil traps are required

If oil flows back into the outdoor unit's compressor, this might cause
liquid compression or deterioration of oil return. Oil traps in the rising
gas piping can prevent this.

If Then

The indoor unit is installed
higher than the outdoor
unit

Install an oil trap every 10m (height
difference).

Typical workflow

Checking the refrigerant piping typically consists of the following
stages:

1 Checking for leaks in the refrigerant piping.

2 Performing vacuum drying to remove all moisture, air or

nitrogen from the refrigerant piping.

If there is a possibility of moisture being present in the refrigerant
piping (for example, water may have entered the piping), first carry
out the vacuum drying procedure below until all moisture has been
removed.

7.6.2 Precautions when checking the refrigerant piping

INFORMATION

Also read the precautions and requirements in the
following chapters:

▪ General safety precautions

▪ Preparation

NOTICE

Use a 2-stage vacuum pump with a non-return valve that
can evacuate to a gauge pressure of −⁠100.7 kPa
(−⁠1.007 bar)(5 Torr absolute). Make sure the pump oil
does not flow oppositely into the system while the pump is
not working.

NOTICE

Use this vacuum pump for R410A exclusively. Using the
same pump for other refrigerants may damage the pump
and the unit.

7.6.3 Checking refrigerant piping: Setup

The outdoor unit is
installed higher than the
indoor unit

7.6 Checking the refrigerant piping

7.6.1 About checking the refrigerant piping

The outdoor unit's internal refrigerant piping has been factory tested
for leaks. You only have to check the outdoor unit's external
refrigerant piping.

Before checking the refrigerant piping

Make sure the refrigerant piping is connected between the outdoor
unit and the indoor unit.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

a Rising gas piping with oil trap

b Liquid piping

Oil traps are NOT required.

a Pressure gauge
b Nitrogen
c Refrigerant
d Weighing machine
e Vacuum pump

f Stop valve

7.6.4 To check for leaks

NOTICE

Do NOT exceed the unit's maximum working pressure (see
"PS High" on the unit name plate).

NOTICE

Make sure to use a recommended bubble test solution
from your wholesaler. Do not use soap water, which may
cause cracking of flare nuts (soap water may contain salt,
which absorbs moisture that will freeze when the piping
gets cold), and/or lead to corrosion of flared joints (soap
water may contain ammonia which causes a corrosive
effect between the brass flare nut and the copper flare).

Installer reference guide

29

7 Installation

1 Charge the system with nitrogen gas up to a gauge pressure of

at least 200 kPa (2 bar). It is recommended to pressurize to
3000kPa (30bar) in order to detect small leaks.

2 Check for leaks by applying the bubble test solution to all

connections.

3 Discharge all nitrogen gas.

7.6.5 To perform vacuum drying

1 Vacuum the system until the pressure on the manifold indicates

−0.1MPa (−1bar).

2 Leave as is for 4-5minutes and check the pressure:

If the pressure… Then…

Does not change There is no moisture in the

system. This procedure is
finished.

Increases There is moisture in the

system. Go to the next step.

3 Evacuate for at least 2 hours to a pressure on the manifold of

−0.1MPa (−1bar).

4 After turning OFF the pump, check the pressure for at least

1hour.

5 If you do NOT reach the target vacuum or cannot maintain the

vacuum for 1hour, do the following:

▪ Check for leaks again.
▪ Perform vacuum drying again.

NOTICE

Make sure to open the stop valves after installing the
refrigerant piping and performing vacuum drying. Running
the system with the stop valves closed may break the
compressor.

INFORMATION

After opening the stop valve, it is possible that the pressure
in the refrigerant piping does NOT increase. This might be
caused by e.g. the closed state of the expansion valve in
the outdoor unit circuit, but does NOT present any problem
for correct operation of the unit.

Typical workflow – Charging additional refrigerant typically consists
of the following stages:

1 Determining if and how much you have to charge additionally.

2 If necessary, charging additional refrigerant.

3 Filling in the fluorinated greenhouse gases label, and fixing it to

the inside of the outdoor unit.

Completely recharging refrigerant

Before completely recharging refrigerant, make sure the following is
done:

1 All refrigerant is recovered from the system.

2 The outdoor unit's external refrigerant piping is checked (leak

test, vacuum drying).

3 Vacuum drying on the outdoor unit's internal refrigerant piping is

performed.

NOTICE

Before completely recharging, perform vacuum drying on
the outdoor unit's internal refrigerant piping as well. To do
so, use the internal service port of the outdoor unit
(between the heat exchanger and the 4‑way valve). Do
NOT use the service ports of the stop valves, because
vacuum drying cannot be performed properly from these
ports.

Typical workflow – Completely recharging refrigerant typically
consists of the following stages:

1 Determining how much refrigerant to charge.

2 Charging refrigerant.

3 Filling in the fluorinated greenhouse gases label, and fixing it to

the inside of the outdoor unit.

7.7.2 Precautions when charging refrigerant

INFORMATION

Also read the precautions and requirements in the
following chapters:

▪ General safety precautions

▪ Preparation

7.7 Charging refrigerant

7.7.1 About charging refrigerant

The outdoor unit is factory charged with refrigerant, but in some
cases the following might be necessary:

What When

Charging additional refrigerant When the total liquid piping

length is more than specified
(see later).

Completely recharging refrigerant Example:

▪ When relocating the system.

▪ After a leak.

Charging additional refrigerant

Before charging additional refrigerant, make sure the outdoor unit's

external refrigerant piping is checked (leak test, vacuum drying).

INFORMATION

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

Installer reference guide

30

7.7.3 To determine the additional refrigerant amount

If the total liquid

piping length is…

≤10m Do NOT add additional refrigerant.

>10m R=(total length (m) of liquid

piping⁠–⁠10m)×0.054

R=Additional charge (kg)(rounded in units
of 0.1kg)

INFORMATION

Piping length is the one way length of liquid piping.

Then…

7.7.4 To determine the complete recharge amount

INFORMATION

If a complete recharge is necessary, the total refrigerant
charge is: the factory refrigerant charge (see unit name
plate) + the determined additional amount.

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

7 Installation

b

Contains fluorinated greenhouse gases

2

1

1

1

2

2

kg

tCO2eq

GWP × kg

1000

=
=

+

kg

=

kg

=

GWP: XXX

RXXX

a

f

c

d
e

fac e d b

7.7.5 To charge additional refrigerant

WARNING

▪ Only use R410A as refrigerant. Other substances may

cause explosions and accidents.

▪ R410A contains fluorinated greenhouse gases. Its

global warming potential (GWP) value is 2087.5. Do
NOT vent these gases into the atmosphere.

▪ When charging refrigerant, always use protective

gloves and safety glasses.

CAUTION

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

Prerequisite: Before charging refrigerant, make sure the refrigerant
piping is connected and checked (leak test and vacuum drying).

1 Connect the refrigerant cylinder to both the service port of the

gas stop valve and the service port of the liquid stop valve.

2 Charge the additional refrigerant amount.

3 Open the stop valves.

If pump down is needed in case of dismantling or relocating the
system, see "13.3To pump down"on page73 for more details.

7.7.6 To fix the fluorinated greenhouse gases label

1 Fill in the label as follows:

Typical workflow

Connecting the water piping typically consists of the following
stages:

1 Connecting the water piping to the indoor unit.

2 Connecting the recirculation piping.

3 Connecting the pressure relief valve to the drain.

4 Filling the water circuit.

5 Filling the domestic hot water tank.

6 Insulating the water piping.

7.8.2 Precautions when connecting the water piping

INFORMATION

Also read the precautions and requirements in the
following chapters:

▪ General safety precautions

▪ Preparation

7.8.3 To connect the water piping

NOTICE

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

To facilitate service and maintenance, 4 shut-off valves are provided.
Mount these valves on the space heating water inlets and space
heating water outlets. Mind their position. The orientation of the
integrated drain and fill valves is important for servicing.

a If a multilingual fluorinated greenhouse gases label is

delivered with the unit (see accessories), peel off the
applicable language and stick it on top of a.

b Factory refrigerant charge: see unit name plate

c Additional refrigerant amount charged

d Total refrigerant charge

e Greenhouse gas emissions of the total refrigerant charge

expressed as tonnes CO2-equivalent

f GWP = Global warming potential

NOTICE

In Europe, the greenhouse gas emissions of the total
refrigerant charge in the system (expressed as tonnes
CO2-equivalent) is used to determine the maintenance
intervals. Follow the applicable legislation.

Formula to calculate the greenhouse gas emissions:

GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000

2 Fix the label on the inside of the outdoor unit near the gas and

liquid stop valves.

7.8 Connecting the water piping

7.8.1 About connecting the water piping

Before connecting the water piping

Make sure the outdoor and indoor unit are mounted.

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.

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

a Space heating additional zone water out
b Space heating additional zone water in
c Domestic hot water out
d Domestic cold water in (cold water supply)
e Space heating main zone water out

f Space heating main zone water in

NOTICE

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

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

31

7 Installation

4×

b

a

c

a

ab

NOTICE

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

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

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

unit.

NOTICE

Install air purge valves at all local high points.

NOTICE

▪ A drain device and pressure relief device should be

installed on the cold water inlet connection of the
domestic hot water cylinder.

▪ To avoid back siphonage, it is recommended to install a

non-return valve on the water inlet of the domestic hot
water tank in accordance with the applicable legislation.

▪ It is recommended to install a pressure reducing valve

on the cold water inlet in accordance with the
applicable legislation.

▪ An expansion vessel should be installed on the cold

water inlet in accordance with the applicable legislation.

▪ It is recommended to install the pressure relief valve on

a higher position than the top of the domestic hot water
tank. Heating of the domestic hot water tank causes
water to expand and without pressure relief valve the
water pressure inside the tank can rise above the tank
design pressure. Also the field installation (piping,
tapping points, etc.) connected to the tank is subjected
to this high pressure. To prevent this, a pressure
relieve valve needs to be installed. The overpressure
prevention depends on the correct operation of the field
installed pressure relief valve. If this is NOT working
correctly, overpressure will deform the tank and water
leakage may occur. To confirm good operation, regular
maintenance is required.

6 Connect the recirculation piping to the recirculation connection

(b) and route the piping through the hole at the backside of the
unit (a).

a Piping intake hole
b Recirculation connection
c Cut-out location

7 Reattach the top insulation, expansion vessel, and casing.

7.8.5 To connect the pressure relief valve to the drain

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

7.8.4 To connect the recirculation piping

Prerequisite: Only required if you need recirculation in your system.

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

2 Remove the top panel from the unit.

a Pressure relief blow-out

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

7.8.6 To fill the water circuit

1 Connect the water supply hose to the fill valve.

3 Disconnect and remove the expansion vessel of the top

insulation.

4 Remove the top insulation.

5 Cut out part (c) on the left or right side from the top insulation.

Tank capacity Cut out position

180l Left OR right

Installer reference guide

32

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

7 Installation

INFORMATION

Please fill with water through connection a OR b. Both
circuits (main and additional) will be filled.

2 Open the fill valve.

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

turns).

4 Fill the circuit with water until the manometer indicates a

pressure of ±2.0bar.

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

6 Close the fill valve.

7 Disconnect the water supply hose from the fill valve.

NOTICE

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

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

7.8.7 To fill the domestic hot water tank

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

pipe work.

2 Open the cold water supply valve.

3 Close all water taps after all air is purged.

4 Check for water leaks.

5 Manually operate the field-installed pressure relief valve to

ensure a free water flow through the discharge pipe.

7.8.8 To insulate the water piping

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

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.

7.9 Connecting the electrical wiring

7.9.1 About connecting the electrical wiring

Before connecting the electrical wiring

Make sure:

▪ The refrigerant piping is connected and checked

▪ The water piping is connected

Typical workflow

Connecting the electrical wiring typically consists of the following
stages:

1 Making sure the power supply system complies with the

electrical specifications of the heat pump.

2 Connecting the electrical wiring to the outdoor unit.

3 Repositioning the air thermistor on the outdoor unit.

4 Connecting the electrical wiring to the indoor unit.

5 Connecting the main power supply.

6 Connecting the backup heater power supply.

7 Connecting the user interface.

8 Connecting the shut–off valves.

9 Connecting the electrical meters.

10 Connecting the domestic hot water pump.

11 Connecting the alarm output.

12 Connecting the changeover to an external heat source.

13 Connecting the power consumption digital inputs.

14 Connecting the safety thermostat.

7.9.2 About electrical compliance

ERHQ_V3

Equipment complying with EN/IEC 61000‑3‑12 (European/
International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage
systems with input current >16A and ≤75A per phase.).

ERLQ_V3

Equipment complying with:

▪ EN/IEC 61000‑3‑11 provided that the system impedance Z

less than or equal to Z

at the interface point between the user's

max

supply and the public system.

▪ EN/IEC 61000‑3‑11 = European/International Technical

Standard setting the limits for voltage changes, voltage
fluctuations and flicker in public low-voltage supply systems for
equipment with rated current ≤75A.

▪ It is the responsibility of the installer or user of the equipment to

ensure, by consultation with the distribution network operator if
necessary, that the equipment is connected only to a supply
with a system impedance Z

less than or equal to Z

sys

max

▪ EN/IEC 61000‑3‑12 provided that the short-circuit power Ssc is

greater than or equal to the minimum Ssc value at the interface
point between the user's supply and the public system.

▪ EN/IEC 61000‑3‑12 = European/International Technical

Standard setting the limits for harmonic currents produced by
equipment connected to public low-voltage systems with input
current >16A and ≤75A per phase.

▪ It is the responsibility of the installer or user of the equipment to

ensure, by consultation with the distribution network operator if
necessary, that the equipment is connected only to a supply
with a short-circuit power Ssc greater than or equal to the
minimum Ssc value.

is

sys

.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Model Z

max

Minimum S

sc

value

ERLQ011CAV3

0.22Ω 525kVA

ERLQ014CAV3

ERLQ016CAV3

ERLQ_W1

Equipment complying with EN/IEC 61000‑3‑12 (European/
International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage
systems with input current >16A and ≤75A per phase.).

Installer reference guide

33

7 Installation

b a

cb

c

aa

A

AA´

A´

c b ba c

a

B

B

a b

c

b

a

d

V3
1~ 50 Hz
230 V

W1

3N~ 50 Hz

400 V

L1 L3L2

L1 L3L2

Only for indoor units

See "7.9.10 To connect the backup heater power supply" on

page37.

7.9.3 Precautions when connecting the electrical wiring

INFORMATION

Also read the precautions and requirements in the
following chapters:

▪ General safety precautions

▪ Preparation

DANGER: RISK OF ELECTROCUTION

WARNING

ALWAYS use multicore cable for power supply cables.

7.9.4 Guidelines when connecting the electrical wiring

Keep the following in mind:

▪ If stranded conductor wires are being used, install a round crimp-

style terminal on the tip. Place the round crimp-style terminal on
the wire up to the covered part and fasten the terminal with the
appropriate tool.

a Stranded conductor wire

b Round crimp-style terminal

▪ Use the following methods for installing wires:

7.9.5 Specifications of standard wiring components

Component V3 W1

ERHQ ERLQ ERHQ ERLQ

Power supply
cable

(a)

MCA

31.9A 34.2A 13.5A 16.3A

Voltage 230V 400V

Phase 1~ 3N~

Frequency 50Hz

Wire sizes Must comply with applicable

legislation

Interconnection cable Minimum cable section of 2.5mm²

and applicable for 230V

Recommended field fuse 32A 40A 20A

Earth leakage circuit breaker Must comply with applicable

legislation

(a) MCA=Minimum circuit ampacity. Stated values are

maximum values (see electrical data of combination with
indoor units for exact values).

7.9.6 To connect the electrical wiring on the outdoor unit

NOTICE

▪ Follow the wiring diagram (delivered with the unit,

located at the inside of the service cover).

▪ Make sure the electrical wiring does NOT obstruct

proper reattachment of the service cover.

1 Remove the service cover. See "7.2.2 To open the outdoor

unit"on page23.

2 Strip insulation (20mm) from the wires.

Wire type Installation method

Single core wire

Stranded conductor
wire with round
crimp-style terminal

Tightening torques

M4 (X1M) 1.2~1.8

M5 (X1M) 2.0~3.0

M5 (earth) 3.0~4.0

34

Installer reference guide

a Curled single core wire

b Screw

c Flat washer

a Terminal

b Screw

c Flat washer

Item Tightening torque (N•m)

a Strip wire end to this point
b Excessive strip length may cause electrical shock or

leakage.

3 Connect the interconnection cable and power supply as follows:

a Interconnection cable
b Power supply cable
c Earth leakage circuit breaker
d Fuse

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

7 Installation

d

b

a

V3 W1

e

h
f

d

g

e

h
f

g

c

c

a

b

a

b

a

b

2

3

1

a b c d e

A B

1

3

2

4

5

a Switch box

b Stop valve attachment plate

c Earth

d Cable tie

e Interconnection cable

f Power supply cable

Only if bottom plate heater is installed (option for ERHQ):

g Bottom plate heater cable
h Power supply cable of the bottom plate heater (from the

indoor unit)

INFORMATION

ERLQ units control the bottom plate heater internally (field
wiring NOT required).

4 Fix the cables (power supply, interconnection cable and power

supply of the bottom plate heater (if applicable)) with a cable tie
to the stop valve attachment plate.

5 Route the wiring through the frame and connect it to it.

Connecting to the
frame

When cables are routed from the unit, a
protection sleeve for the conduits (PG
insertions) can be inserted at the knockout
hole.

When you do not use a wire conduit,
protect the wires with vinyl tubes to
prevent the edge of the knockout hole from
cutting the wires.

A Inside of the outdoor unit

B Outside of the outdoor unit

a Wire

b Bush

c Nut

d Frame

e Hose

6 Reattach the service cover. See "7.10.2To close the outdoor

unit"on page41.

7 Connect an earth leakage circuit breaker and fuse to the power

supply line.

7.9.7 To reposition the air thermistor on the outdoor unit

This task is only required for ERLQ.

Required accessories:

Thermistor fixture.

Use the one from the accessory bag.

Thermistor fixing plate.

Reuse the one attached to the unit. If necessary,
you can use the spare one from the accessory
bag.

Routing through
the frame

Choose one of the 3 possibilities:

a Power supply, earth wiring, and bottom
plate heater wire (if applicable)

b Interconnection cable

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

35

7 Installation

7

6

7

8

9

10

11

a b+c

a

b+c

3 Routing of the wiring inside the unit should be as follows:

7.9.8 To connect the electrical wiring on the indoor unit

1 To open the indoor unit, see "7.2.3To open the indoor unit"on

page23 and "7.2.4To open the switch box cover of the indoor
unit"on page23.

2 Wiring should enter the unit from the top:

Routing Possible cables (depending on unit type and installed options)

a

Low voltage

b

High voltage power supply

▪ Preferential power supply contact

▪ User interface

▪ Power consumption digital inputs (field supply)

▪ Outdoor ambient temperature sensor (option)

▪ Indoor ambient temperature sensor (option)

▪ Electrical meters (field supply)

▪ Safety thermostat for the main zone (field supply)

▪ Safety thermostat for the additional zone (field supply)

▪ Interconnection cable

▪ Normal kWh rate power supply

▪ Preferential kWh rate power supply

▪ Power supply for backup heater

▪ Power supply for bottom plate heater (option)

4 Fix the cable with cable ties to the cable tie mountings to

ensure strain relief and to make sure that it does NOT come in
contact with the piping and sharp edges.

INFORMATION

To access the domestic hot water temperature sensor, the
switch box can be tilted. The switch box should NOT be
removed from the unit.

Installer reference guide

36

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

Routing Possible cables (depending on unit type and installed options)

X2M

X5M

A5P

X1M

K3M

K2M

1 2 3

1 2 3

X6YB

X6YA

X6Y

3031

X1A

X6YA

X19A

a

X2M

X5M

A5P

X1M

K3M

K2M

1 2 3

1 2 3

X6YB

X6Y

X1A

L N

L N

30 31

S1S

3 4

X19A

abc

c

High voltage control signal

▪ Heat pump convector (option)

▪ Room thermostat (option)

▪ Shut-off valve (field supply)

▪ Domestic hot water pump (field supply)

▪ Alarm output

▪ Changeover to external heat source control

▪ Space heating operation control

7 Installation

CAUTION

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

7.9.9 To connect the main power supply

1 Connect the main power supply.

In case of normal kWh rate power supply

Legend: see illustration below.

INFORMATION

In case of preferential kWh rate power supply, connect
X6Y to X6YB. The necessity of separate normal kWh rate
power supply to indoor unit (b) X2M30/31 depends on the
type of preferential kWh rate power supply.

Separate connection to the indoor unit is required:

▪ if preferential kWh rate power supply is interrupted

when active, OR

▪ if no power consumption of the indoor unit is allowed at

the preferential kWh rate power supply when active.

INFORMATION

The preferential kWh rate power supply contact is
connected to the same terminals (X5M/3+4) as the safety
thermostat for the additional zone. It is only possible for the
system to have EITHER preferential kWh rate power
supply OR a safety thermostat for the additional zone.

7.9.10 To connect the backup heater power supply

CAUTION

To guarantee the unit is completely earthed, always
connect the backup heater power supply and the earth
cable.

Make sure that the power supply is in accordance with the backup
heater capacity, as listed in the table below.

In case of preferential kWh rate power supply

Connect X6Y to X6YB.

a Interconnection cable (=main power supply)

b Normal kWh rate power supply

c Preferential power supply contact

2 Fix the cable with cable ties to the cable tie mountings.

Backup

heater type

Backup

heater

capacity

Power

supply

Maximum

running

current

Z

(Ω)

max

*3V 3kW 1~230V 13A —

1 Connect the backup heater power supply. A double‑pole fuse is

used for F1B.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

37

7 Installation

X2M

F1B

X1M

L NL N

X5M

A5P

A2P A2P

a b

1 2

Backup heater type Connections to backup heater power

supply

3kW 1~ 230V (*3V)

2 Fix the cable with cable ties to the cable tie mountings.

7.9.11 To connect the user interface

▪ If you use 1 user interface, you can install it at the indoor unit (for

control close to the indoor unit), or in the room (when used as
room thermostat).

▪ If you use 2 user interfaces, you can install 1 user interface at the

indoor unit (for control close to the indoor unit) + 1 user interface
in the room (used as room thermostat).

# At the indoor unit In the room

1 Connect the user interface cable to the indoor unit.

Fix the cable with cable ties to the cable tie mountings.

a Main user interface

(a)

b Optional user interface

2 Insert a screwdriver into the slots underneath the user

interface and carefully separate the faceplate from the
wallplate.

The PCB is mounted in the faceplate of the user interface.
Be careful NOT to damage it.

INFORMATION

The user interface can only be used as room thermostat of
the main zone.

The procedure differs slightly depending on where you install the
user interface.

3 Use the 2 screws in the accessory

bag to fix the wallplate of the user
interface to the sheet metal of the

Fix the wallplate of
the user interface to
the wall.

unit.

Be careful NOT to distort the shape
of the backside of the user interface
by overtightening the mounting
screws.

4 Connect as shown in 4A. Connect as shown

in 4A, 4B, 4C or 4D.

5 Reinstall the faceplate onto the wallplate.

Be careful NOT to pinch the wiring when attaching the
frontplate to the unit.

(a) The main user interface is required for operation, but has to

be ordered separately (mandatory option).

Installer reference guide

38

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

7 Installation

b

a

PCB

1×

a

PCB

b

1×

a

b

PCB

b

1×

a

PCB

b

b

1×

X2M

X1M

K3M

K2M

X2M

X1M

K3M

K2M

5 6 7

M2S

5 6 7

M2S

NO NC

X5M

A5P

78910

S2S S3S

X2M

X1M

K3M

K2M

3534

1~

M

M2P

X2M

X5M

A5P

X1M

A4P

K3M

K2M

29

X1M

YC Y1 Y2 Y3 Y4

a

4A From the rear

4C From the top

a Notch this part for the wiring to pass through with nippers

b Secure the wiring to the front part of the casing using the

4B From the left

4D From the top centre

2 Fix the cable with cable ties to the cable tie mountings.

7.9.14 To connect the domestic hot water pump

1 Connect the domestic hot water pump cable to the appropriate

terminals as shown in the illustration below.

etc.

wiring retainer and clamp.

7.9.12 To connect the shut-off valve

1 Connect the valve control cable to the appropriate terminals as

shown in the illustration below.

NOTICE

Wiring is different for a NC (normal closed) valve and a NO
(normal open) valve.

2 Fix the cable with cable ties to the cable tie mountings.

7.9.15 To connect the alarm output

1 Connect the alarm output cable to the appropriate terminals as

shown in the illustration below.

2 Fix the cable with cable ties to the cable tie mountings.

7.9.13 To connect the electrical meters

INFORMATION

In case of an electrical meter with transistor output, check
the polarity. The positive polarity MUST be connected to
X5M/7 and X5M/9; the negative polarity to X5M/8 and
X5M/10.

1 Connect the electrical meters cable to the appropriate terminals

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

as shown in the illustration below.

a Installation of EKRP1HB is required.

2 Fix the cable with cable ties to the cable tie mountings.

Installer reference guide

39

7 Installation

X5M

A5P

A8P

1 2 3 4 5

X801M

S6S

S7S

S8S

S9S

a

X5M

A5P

1211

3 4

X5M

f

b

a

e

d

c

7.9.16 To connect the power consumption digital inputs

1 Connect the power consumption digital inputs cable to the

appropriate terminals as shown in the illustration below.

a Installation of EKRP1AHTA is required.

2 Fix the cable with cable ties to the cable tie mountings.

7.9.17 To connect the safety thermostat (normal closed contact)

Main zone

1 Connect the safety thermostat (normal closed) cable to the

appropriate terminals as shown in the illustration below.

4 Fix the cable with cable ties to the cable tie mountings.

NOTICE

Make sure to select and install the safety thermostat for the
additional zone according to the applicable legislation.

In any case, to prevent unnecessary tripping of the safety
thermostat, it is recommended that …

▪ … the safety thermostat is automatically resettable.

▪ … the safety thermostat has a maximum temperature

variation rate of 2°C/min.

▪ … there is a minimum distance of 2 m between the

safety thermostat and the 3‑way valve.

INFORMATION

After it is installed, do NOT forget to configure the safety
thermostat for the additional zone. Without configuration,
the indoor unit will ignore the safety thermostat contact.

INFORMATION

The preferential kWh rate power supply contact is
connected to the same terminals (X5M/3+4) as the safety
thermostat for the additional zone. It is only possible for the
system to have EITHER preferential kWh rate power
supply OR a safety thermostat for the additional zone.

7.10 Finishing the outdoor unit installation

7.10.1 To finish the outdoor unit installation

2 Fix the cable with cable ties to the cable tie mountings.

INFORMATION

Installation of a safety thermostat (field supply) is required
for the main zone, otherwise the unit will NOT operate.

NOTICE

A safety thermostat MUST be installed on the main zone to
avoid too high water temperatures in this zone. The safety
thermostat is typically a thermostatically controlled valve
with a normal closed contact. When the water temperature
in the main zone is too high, the contact will open and the
user interface will show a 8H‑02 error. ONLY the main
pump will stop.

Additional zone

3 Connect the safety thermostat (normal closed) cable to the

appropriate terminals as shown in the illustration below.

1 Insulate and fix the refrigerant piping and interconnection cable

as follows:

a Gas pipe
b Gas pipe insulation
c Interconnection cable
d Liquid pipe
e Liquid pipe insulation

f Finishing tape

2 Install the service cover.

Installer reference guide

40

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

8 Configuration

1

3

2

4

1×

A1P

X10A

7.10.2 To close the outdoor unit

NOTICE

When closing the outdoor unit cover, make sure that the
tightening torque does NOT exceed 4.1N•m.

7.11 Finishing the indoor unit installation

7.11.1 To fix the user interface cover to the indoor unit

1 Make sure that the front panel is removed from the indoor unit.

See "7.2.3To open the indoor unit"on page23.

2 Plug the user interface cover into the hinges.

8 Configuration

8.1 Overview: Configuration

This chapter describes what you have to do and know to configure
the system after it is installed.

Why

If you do NOT configure the system correctly, it might NOT work as
expected. The configuration influences the following:

▪ The calculations of the software

▪ What you can see on and do with the user interface

How

You can configure the system using two different methods.

Method Description

Configuring via the
user interface

Configuring via the
PC configurator

INFORMATION

When the installer settings are changed, the user interface
will request to confirm. When confirmed, the screen will
shortly turn OFF and "busy" will be displayed for several
seconds.

Accessing settings – Legend for tables

You can access the installer settings using two different methods.
However, NOT all settings are accessible via both methods. If so,
the corresponding table columns in this chapter are set to N/A (not
applicable).

First time – Quick wizard. When you turn
ON the user interface for the first time (via
the indoor unit), a quick wizard starts to help
you configure the system.

Afterwards. If necessary, you can make
changes to the configuration afterwards.

You can prepare the configuration off-site on
PC and afterwards upload the configuration
to the system with the PC configurator.

See also: "8.1.1To connect the PC cable to

the switch box"on page41.

3 Mount the front panel to the indoor unit.

7.11.2 To close the indoor unit

1 Close the switch box cover.

2 Reinstall the top plate.

3 Reinstall the front panel.

NOTICE

When closing the indoor unit cover, make sure that the
tightening torque does NOT exceed 4.1N•m.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Method Column in tables

Accessing settings via the breadcrumb in the
menu structure.

Accessing settings via the code in the
overview settings.

See also:

▪ "To access the installer settings"on page42

▪ "8.5Menu structure: Overview installer settings"on page62

#

Code

8.1.1 To connect the PC cable to the switch box

Prerequisite: The EKPCCAB kit is required.

1 Connect the cable with USB connection to your PC.

2 Connect the plug of the cable to X10A on A1P of the switch box

of the indoor unit.

Installer reference guide

41

8 Configuration

2

345

H JS T

01

02
06
0a
0e

00 03

07
0b
0f

0000

04
08
0c

00 01

05
09
0d

15

Overview settings

Confirm Adjust Scroll

01

02
06
0a
0e

00 03

07
0b
0f

0000

04
08
0c

00 01

05
09
0d

15

Overview settings

Confirm

Adjust

Scroll

01

02
06
0a
0e

00 03

07
0b
0f

0000

04
08
0c

00 01

05
09
0d

20

Overview settings

Confirm

Adjust

Scroll

Installer settings

The system will restart.

Confirm Adjust

Cancel

OK

15:10

Tue

U5:Auto address

Push 4 sec. to continue

3 Pay special attention to the position of the plug!

3 Go to the corresponding second part of the setting by using the

and button.

NOTICE

Another cable is already connected to X10A. To connect
the PC cable to X10A, therefore temporarily disconnect
this other cable. Do NOT forget to reconnect it afterwards.

8.1.2 To access the most used commands

To access the installer settings

1 Set the user permission level to Installer.

2 Go to [A]:

To access the overview settings

1 Set the user permission level to Installer.

2 Go to [A.8]:

To set the user permission level to Installer

1 Set the user permission level to Adv. end user.

2 Go to [6.4]:

3 Press

Result:

4 If you do NOT press any button for more than 1hour or press

again for more than 4seconds, the installer permission level

switches back to End user.

To set the user permission level to Advanced end user

1 Go to the main menu or any of its submenus:

2 Press

Result: The user permission level switches to Adv. end user.

Additional information is displayed and "+" is added to the menu title.
The user permission level will stay in Adv. end user until set
otherwise.

To set the user permission level to End user

1 Press

Result: The user permission level switches to End user. The user

interface will return to the default home screen.

To modify an overview setting

Example: Modify [1‑01] from 15 to 20.

1 Go to [A.8]:

2 Go to the corresponding screen of the first part of the setting by

using the

INFORMATION

An additional 0-digit is added to the first part of the setting
when you access the codes in the overview settings.

Example: [1‑01]: "1" will result in "01".

Installer reference guide

42

> Installer settings.

> Installer settings > Overview settings.

> Information > User permission level.

for more than 4seconds.

is displayed on the home pages.

for more than 4seconds.

for more than 4 seconds.

> Installer settings > Overview settings.

and button.

Result: The value to be modified is now highlighted.

4 Modify the value by using the

5 Repeat previous steps if you have to modify other settings.

6 Push

7 At installer settings menu, press

Result: The system will restart.

to confirm the modification of the parameter.

and button.

to confirm the settings.

8.1.3 To copy the system settings from the first to the second user interface

.

If a second user interface is connected, the installer must first
proceed below instructions for the proper configuration of the 2 user
interfaces.

This procedure offers you also the possibility to copy the language
set from one user interface to the other one: e.g. from EKRUCBL2 to
EKRUCBL1.

1 When power is turned on for the first time, both user interfaces

display:

2 Push for 4seconds on the user interface on which you want

to proceed to the quick wizard. This user interface is now the
main user interface.

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

8 Configuration

Synchronization

Data difference detected.
Please select action:

Send data

Confirm

Adjust

Start copy

Are you sure you want to
start the copy operation?

Cancel

OK

Confirm Adjust

Language

Select the desired language

Confirm Adjust

1 2013

Jan

Tue

Confirm Adjust Scroll

Date

What is the date today?

00 : 00

What is the current time?

Time

Confirm

Adjust

Scroll

A.2 1

Scroll

Select

System layout

Standard

Options
Capacities
Confirm layout

Confirm layout
Please confirm the system

layout. The system will
restart and will be ready for
first startup.

OK

Cancel

Confirm

Adjust

INFORMATION

During the quick wizard, the second user interface displays
Busy and will NOT be possible to operate.

3 The quick wizard will guide you.

4 For proper operation of the system, the local data on the two

user interfaces must be the same. If this is NOT the case, both
user interfaces will display:

5 Select the required action:

▪ Send data: the user interface you are operating contains the

correct data and the data on the other user interface will be
overwritten.

▪ Receive data: the user interface you are operating does

NOT contain the correct data and the data on the other user
interface will be used to overwrite.

6 The user interface requests confirmation if you are sure to

proceed.

1 At power ON, the quick wizard starts as long as the system

layout was NOT confirmed yet, by setting the language.

2 Set the current date and time.

3 Set the system layout settings: Standard, Options, Capacities.

For more details, see "8.2Basic configuration"on page43.

7 Confirm the selection on the screen by pushing and all data

(languages, schedules etc.) will be synchronised from the
selected source user interface to the other one.

INFORMATION

▪ During the copying, both controllers will NOT allow

operation.

▪ The copy operation can take up until 90 minutes.

▪ It is recommended to change installer settings, or the

configuration of the unit, on the main user interface. If
not, it can take up to 5 minutes before these changes
are visible in the menu structure.

8 Your system is now set to be operated by the 2 user interfaces.

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

See "8.1.3To copy the system settings from the first to the second

user interface"on page42.

8.1.5 Quick wizard: Set the system layout after first power ON

After first power ON of the system, you are guided on the user
interface to do initial settings:

▪ language,

▪ date,

▪ time,

▪ system layout.

By confirming the system layout, you can proceed with the
installation and commissioning of the system.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

4 After configuration, select Confirm layout and press .

5 The user interface re-initialises and you can proceed the

installation by setting the other applicable settings and
commissioning of the system.

When the installer settings are changed, the system will request to
confirm. When confirmation is complete, the screen will shortly turn
OFF and "busy" will be displayed for several seconds.

8.2 Basic configuration

8.2.1 Quick wizard: Language / time and date

# Code Description

[A.1] N/A Language

[1] N/A Time and date

Installer reference guide

43

8 Configuration

c

b

a

c

FHL1 FHL2 FHL3

M

HPC1 HPC2 HPC3

8.2.2 Quick wizard: Standard

Backup heater configuration (only for *9W model)

The backup heater in a *9W model is adapted to be connected to
most common European electricity grids. Besides hardware
configuration, the grid type and the relay setting must be set on the
user interface.

# Code Description

[A.2.1.5] [5-0D] BUH type:

▪ 1 (1P,(1/1+2)): 6kW 1~230V (*9W)

▪ 3 (3P,(1/1+2)): 6kW 3~230V (*9W)

▪ 4 (3PN,(1/2)): 6kW 3N~400V (*9W)

▪ 5 (3PN,(1/1+2)): 9 kW 3N~ 400 V

(*9W)

Relay setting

Relay setting Backup heater operation

If backup heater
step 1 is active:

1/1+2 Relay 1 ON Relays 1+2 ON

1/2 Relay 1 ON Relay 2 ON

Space heating settings

The system can heat up a space. Depending on the type of
application, the space heating settings must be made accordingly.

# Code Description

[A.2.1.7] [C-07] Unit control method:

▪ 0 (LWT control): Unit operation is

decided based on the leaving water
temperature regardless the actual
room temperature and/or heating
demand of the room. This is applicable
for both temperature zones.

▪ 1 (Ext RT control): Unit operation is

decided by the external thermostat or
equivalent (e.g. heat pump convector).
This is applicable for both temperature
zones.

▪ 2 (RT control): Unit operation for the

main temperature zone is decided
based on the ambient temperature of
the user interface. The additional
temperature zone is controlled by the
external thermostat.

If backup heater
step 2 is active:

# Code Description

[A.2.1.B] N/A Only if there are 2user interfaces (1

installed in the room, 1 installed at the
indoor unit):

▪ a: At unit

▪ b: In room as room thermostat

▪ c: Remote controller of the heat pump

convectors

User interface location:

▪ At unit: the other user interface is

automatically set to In room and if RT
control is selected act as room
thermostat.

▪ In room (default): the other user

interface is automatically set to At unit
and if RT control is selected to act as
room thermostat. Controlling the main
zone.

Installer reference guide

44

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

8 Configuration

M

FHL1 FHL2 FHL3

HPC1 HPC2 HPC3

a

b

a

b c

d

b c

a
b

d

e

f

c

g
b

c

a

d

e

b

b

c

b c

c

# Code Description

[A.2.1.8] [7-02] The system can supply leaving water to

up to 2 water temperature zones. During
configuration, the number of water zones
must be set.

Number of LWT zones: This unit is
designed for 2 leaving water temperature
zones. Do NOT change this setting.

▪ 0 (1 LWT zone): N/A.

▪ 1 (2 LWT zones)(default): 2 leaving

water temperature zones. The zone
with the lowest leaving water
temperature is called the main leaving
water temperature zone. The zone
with the highest leaving water
temperature is called the additional
leaving water temperature zone. In
practice, the main leaving water
temperature zone consists of
underfloor heating and the additional
water temperature zone consists of
radiators or heat pump convectors.

# Code Description

[A.2.1.9] [F-0D] << continuation

▪ 1 (Sample): The pump is ON when

there is heating demand and the
leaving water temperature has NOT
reached the desired temperature yet.
When thermo OFF condition occurs,
the pump runs every 5 minutes to
check the water temperature and
demand heating if necessary.
Remark: Sample is NOT available in
external room thermostat control or
room thermostat control.

▪ a: Space heating control (user

interface)

▪ b: OFF

▪ c: On

▪ d: LWT temperature

▪ e: Actual

▪ f: Desired

▪ g: Pump operation

continued >>

▪ a: Add LWT zone

▪ b: Main LWT zone

# Code Description

[A.2.1.9] [F-0D] When the space heating control is OFF

by the user interface, the pump is always
OFF. When the space heating control is
On, you can select the desired pump
operation mode (only applicable during
space heating). This is applicable for
both temperature zones.

Pump operation mode:

▪ 0 (Continuous): Continuous pump

operation, regardless of thermo ON or
OFF condition. Remark: continuous
pump operation requires more energy
than sample or request pump
operation.

▪ a: Space heating control (user

interface)

▪ b: OFF

▪ c: On

▪ d: Pump operation

continued >>

# Code Description

[A.2.1.9] [F-0D] << continuation

▪ 2 (Request)(default): Pump operation

based on request. Example: Using a
room thermostat creates thermo ON/
OFF condition. When there is no such
demand, the pump is OFF. Remark:
Request is NOT available in leaving
water temperature control.

▪ a: Space heating control (user

interface)

▪ b: OFF

▪ c: On

▪ d: Heating demand (by ext RT or

RT)

▪ e: Pump operation

8.2.3 Quick wizard: Options

Domestic hot water settings

Following settings must be made accordingly.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

45

8 Configuration

c
f

b

a

g

c

b

a

d f

e g

# Code Description

[A.2.2.1] [E-05] DHW operation:

Can the system prepare domestic hot
water?

▪ 0 (No): NOT installed.

▪ 1 (Yes)(default): Installed. Remark:

The domestic hot water tank is by
default installed. Do NOT change this
setting.

[A.2.2.A] [D-02] The indoor unit offers the possibility to

connect a field supplied domestic hot
water pump (On/OFF type). Depending
on the installation and configuration on
the user interface, we distinguish its
functionality.

DHW pump:

▪ 0 (No)(default): NOT installed.

▪ 1 (Secondary rtrn): Installed for instant

hot water when water is tapped. The
end-user sets the operation timing
(weekly schedule time) of the
domestic hot water pump when it
should run. Control of this pump is
possible through the indoor unit.

▪ 2 (Disinf. shunt): Installed for

disinfection. It runs when the
disinfection function of the domestic
hot water tank is running. No further
settings are needed.

See also illustrations below.

Domestic hot water pump installed for…

Instant hot water Disinfection

a Indoor unit

b Tank

c Domestic hot water pump (field supply)

d Heater element (field supply)

e Non‑return valve (field supply)

f Shower (field supply)

g Cold water

Thermostats and external sensors

Following combinations are possible to control the unit (not
applicable when [C‑07]=0):

When [C‑07]=2 (RT control)

User interface at

indoor unit

(1)

Room thermostat at

main zone

(2)

External room

thermostat at

additional zone

User interface at

indoor unit

External room

thermostat at main

zone

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.

See "5Application guidelines"on page11.

# Code Description

[A.2.2.4] [C-05] Contact type main

In external room thermostat control, the
contact type of the optional room
thermostat or heat pump convector for
the main leaving water temperature zone
must be set. See "5Application

guidelines"on page11.

▪ 1 (Thermo ON/OFF): The connected

external room thermostat or heat
pump convector sends the heating
demand to the indoor unit (X2M/1).
Select this value in case of a
connection to the heat pump
convector (FWXV).

▪ 2 (H/C request)(default): The

connected external room thermostat
sends a heating demand and is
connected to the digital input
(preserved for the main leaving water
temperature zone) on the indoor unit
(X2M/1). Select this value in case of
connection with the wired (EKRTWA)
or wireless (EKRTR1) room
thermostat.

[A.2.2.5] [C-06] Contact type add.

In external room thermostat control with
2 leaving water temperature zones, the
type of the optional room thermostat for
the additional leaving water temperature
zone must be set. See "5Application

guidelines"on page11.

▪ 1 (Thermo ON/OFF): See Contact

type main. Connected on the indoor
unit (X2M/1a).

▪ 2 (H/C request)(default): See Contact

type main. Connected on the indoor
unit (X2M/1a).

External room

thermostat at

additional zone

When [C‑07]=1 (Ext RT control)

(1)Not mandatory.
(2)When there is no user interface installed at the indoor unit, the user interface in the main zone will function as room thermostat AND user interface.

Installer reference guide

46

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

8 Configuration

# Code Description

[A.2.2.B] [C-08] External sensor

When an optional external ambient
sensor is connected, the type of the
sensor must be set. See "5Application

guidelines"on page11.

▪ 0 (No)(default): NOT installed. The

thermistor in the user interface and in
the outdoor unit are used for
measurement.

▪ 1 (Outdoor sensor): Installed. The

external outdoor sensor will be used to
measure the outdoor ambient
temperature. Remark: For some
functionality, the temperature sensor
in the outdoor unit is still used.

▪ 2 (Room sensor): Installed. The

temperature sensor in the user
interface is NOT used anymore.
Remark: This value has only meaning
in room thermostat control.

Digital I/O PCB

Modification of these settings is only needed when the optional
digital I/O PCB is installed. The digital I/O PCB has multiple
functionality which need to be configured. See "5 Application

guidelines"on page11.

# Code Description

[A.2.2.6.1] [C-02] Not applicable.

[A.2.2.6.2] [D-07] Not applicable (read only).

[A.2.2.6.3] [C-09] Alarm output

Indicates the logic of the alarm output on
the digital I/O PCB during
malfunctioning.

▪ 0 (Normally open): The alarm output

will be powered when an alarm
occurs. By setting this value, a
distinction is made between the
detection of an alarm, and the
detection of a power failure.

▪ 1 (Normally closed): The alarm output

will NOT be powered when an alarm
occurs.

See also table below (Alarm output
logic).

[A.2.2.6.4] [F-04] Bottom plate heater

Only applicable for EHVZ16. Indicates if
an optional bottom plate heater is
installed on the outdoor unit. The power
of the bottom plate heater is in this case
supplied by the indoor unit.

▪ 0 (No)(default): NOT installed.

▪ 1 (Yes): Installed. Remark: If this

value is set, the output on the digital I/
O PCB cannot be used for space
heating output. See "5 Application

guidelines"on page11.

Alarm output logic

[C-09] Alarm No alarm No power

supply to unit

0 (default) Closed output Open output Open output

1 Open output Closed output

Demand PCB

The demand PCB is used to enable the power consumption control
by digital inputs. See "5Application guidelines"on page11.

# Code Description

[A.2.2.7] [D-04] Demand PCB

Only applicable for EHVZ04+08.
Indicates if the optional demand PCB is
installed.

▪ 0 (No)(default)

▪ 1 (Pwr consmp ctrl)

Energy metering

When energy metering is performed by the use of external power
meters, configure the settings as described below. Select the pulse
frequency output of each power meter in accordance with the power
meter specifications. It is possible to connect (up to 2) power meters
with different pulse frequencies. When only 1 or no power meter is
used, select No to indicate the corresponding pulse input is NOT
used.

# Code Description

[A.2.2.8] [D‑08] Optional external kWh meter1:

▪ 0 (No): NOT installed

▪ 1: Installed (0.1pulse/kWh)

▪ 2: Installed (1pulse/kWh)

▪ 3: Installed (10pulse/kWh)

▪ 4: Installed (100pulse/kWh)

▪ 5: Installed (1000pulse/kWh)

[A.2.2.9] [D‑09] Optional external kWh meter2:

▪ 0 (No): NOT installed

▪ 1: Installed (0.1pulse/kWh)

▪ 2: Installed (1pulse/kWh)

▪ 3: Installed (10pulse/kWh)

▪ 4: Installed (100pulse/kWh)

▪ 5: Installed (1000pulse/kWh)

8.2.4 Quick wizard: Capacities (energy metering)

The capacities of all electrical heaters must be set for the energy
metering and/or power consumption control feature to work properly.
When measuring the resistance value of each heater, you can set
the exact heater capacity and this will lead to more accurate energy
data.

# Code Description

[A.2.3.2] [6-03] BUH: step 1: The capacity of the first

step of the backup heater at nominal
voltage. Nominal value 3kW. Default:
3kW.

Range: 0~10kW (in steps of 0.2kW)

[A.2.3.6] [6-07] Bottom plate heater: Only applies to an

optional bottom plate heater
(EKBPHTH16A). The capacity of the
optional bottom plate heater at nominal
voltage. Default: 0W.

Range: 0~200W (in steps of 10W)

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

47

8 Configuration

[1-03]

[1-02]

T

a

T

t

[1-00] [1-01]

8.2.5 Space heating control

The basic required settings in order to configure the space heating of
your system are described in this chapter. The weather-dependent
installer settings define the parameters for the weather-dependent
operation of the unit. When weather-dependent operation is active,
the water temperature is determined automatically depending on the
outdoor temperature. Low outdoor temperatures will result in warmer
water and vice versa. During weather-dependent operation, the user
has the possibility to shift up or down the target water temperature
by a maximum of 5°C.

See the user reference guide and/or operation manual for more
details about this function.

Leaving water temperature: Main zone

# Code Description

[A.3.1.1.1] N/A LWT setpoint mode:

▪ Fixed (default)

The desired leaving water
temperature is:

▪ NOT weather-dependent (i.e. does

NOT depend on the outdoor
ambient temperature)

▪ fixed in time (i.e., NOT scheduled)

▪ Weather dep.: The desired leaving

water temperature is:

▪ weather-dependent (i.e. depends

on the outdoor ambient
temperature)

▪ fixed in time (i.e., NOT scheduled)

continued >>

# Code Description

[A.3.1.1.1] N/A << continuation

▪ Fixed/scheduled: The desired leaving

water temperature is:

▪ NOT weather-dependent (i.e.,

does NOT depend on the outdoor
ambient temperature)

▪ according a schedule. The

scheduled actions consists of
desired shift actions, either preset
or custom.

Remark: This value can only be
set in leaving water temperature
control.

▪ WD/scheduled: The desired leaving

water temperature is:

▪ weather-dependent (i.e., does

depend on the outdoor ambient
temperature)

▪ according a schedule. The

scheduled actions consists of
desired leaving water
temperatures either preset or
custom.

Remark: This value can only be
set in leaving water temperature
control.

# Code Description

[7.7.1.1] [1-00]

Set weather-dependent heating:

[1-01]

[1-02]

[1-03]

▪ Tt: Target leaving water temperature

(main)

▪ Ta: Outdoor temperature

continued >>

# Code Description

[7.7.1.1] [1-00]

[1-01]

[1-02]

[1-03]

<< continuation

▪ [1-00]: Low outdoor ambient

temperature.–40°C~+5°C (default: –
10°C)

▪ [1-01]: High outdoor ambient

temperature. 10°C~25°C (default:
15°C)

▪ [1-02]: Desired leaving water

temperature when the outdoor
temperature equals or drops below
the low ambient temperature.
[9‑01]°C~[9‑00]°C (default: 35°C).
Note: This value should be higher
than [1-03] as for low outdoor
temperatures warmer water is
required.

▪ [1-03]: Desired leaving water

temperature when the outdoor
temperature equals or rises above
the high ambient temperature.
[9‑01]°C~min(45, [9‑00])°C (default:
25°C).
Note: This value should be lower
than [1-02] as for high outdoor
temperatures less warm water is
required.

Leaving water temperature: Additional zone

Only applicable if 2 leaving water temperature zones are present.

Installer reference guide

48

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

8 Configuration

[0-00]

[0-01]

T

a

T

t

[0-03] [0-02]

# Code Description

[A.3.1.2.1] N/A LWT setpoint mode:

▪ Fixed (default): The desired leaving

water temperature is:

▪ NOT weather-dependent (i.e. does

NOT depend on the outdoor
ambient temperature)

▪ fixed in time (i.e., NOT scheduled)

▪ Weather dep.: The desired leaving

water temperature is:

▪ weather-dependent (i.e. depends

on the outdoor ambient
temperature)

▪ fixed in time (i.e., NOT scheduled)

▪ Fixed/scheduled: The desired leaving

water temperature is:

▪ NOT weather-dependent (i.e.,

does NOT depend on the outdoor
ambient temperature)

▪ according a schedule. The

scheduled actions are On or OFF.

Remark: This value can only be
set in leaving water temperature
control.

▪ WD/scheduled: The desired leaving

water temperature is:

▪ weather-dependent (i.e., does

depend on the outdoor ambient
temperature)

▪ according a schedule. The

scheduled actions are On or OFF.

Remark: This value can only be
set in leaving water temperature
control.

# Code Description

[7.7.2.1] [0-00]

Set weather-dependent heating:

[0-01]

[0-02]

[0-03]

▪ Tt: Target leaving water temperature

(additional)

▪ Ta: Outdoor temperature

continued >>

# Code Description

[7.7.2.1] [0-00]

[0-01]

[0-02]

[0-03]

<< continuation

▪ [0-03]: Low outdoor ambient

temperature. –40°C~+5°C (default: –
10°C)

▪ [0-02]: High outdoor ambient

temperature. 10°C~25°C (default:
15°C)

▪ [0-01]: Desired leaving water

temperature when the outdoor
temperature equals or drops below
the low ambient temperature.
[9‑05]°C~[9‑06]°C (default: 45°C).
Note: This value should be higher
than [0-00] as for low outdoor
temperatures warmer water is
required.

▪ [0-00]: Desired leaving water

temperature when the outdoor
temperature equals or rises above
the high ambient temperature.
[9‑05]°C~min(45, [9‑06])°C (default:
35°C).
Note: This value should be lower
than [0-01] as for high outdoor
temperatures less warm water is
required.

Leaving water temperature: Delta T source

When both temperature zones have heating demand, both pumps
will operate at full speed. When only 1 temperature zone has heating
demand, only 1 pump will operate and the flow will be controlled to
realize a temperature difference between the entering and the
leaving water of [9‑09] on that zone. Only 1 temperature difference
[9‑09] can be selected, this is then applicable for both temperature
zones.

# Code Description

[A.3.1.3.1] [9-09] Heating: Required temperature

difference between entering and
leaving water. Range: 3°C~10°C (in
steps of 1°C; default value: 5°C).

Leaving water temperature: Modulation

Only applicable in case of room thermostat control. When using the
room thermostat functionality, the customer needs to set the desired
room temperature. The unit will supply hot water to the heat emitters
and the room will be heated. Additionally, also the desired leaving
water temperature must be configured: when turning on the
modulation, the desired leaving water temperature will be calculated
automatically by the unit (based on the preset temperatures, if
weather-dependent is selected, modulation will be done based on
the desired weather-dependent temperatures); when turning off the
modulation, you can set the desired leaving water temperature on
the user interface. Moreover, with the modulation turned on, the
desired leaving water temperature is lowered or raised in function of
the desired room temperature and the difference between the actual
and the desired room temperature. This results in:

▪ stable room temperatures exactly matching the desired

temperature (higher comfort level)

▪ less On/OFF cycles (lower noise level, higher comfort and higher

efficiency)

▪ water temperatures as low as possible to match the desired

temperature (higher efficiency)

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

49

8 Configuration

a

+[8-06]

−[8-06]

b

T

a

T

t

# Code Description

[A.3.1.1.5] [8-05] Modulated LWT:

▪ No (default): disabled.

Note: The desired leaving water
temperature needs to be set on the
user interface.

▪ Yes: enabled.

Note: The desired leaving water
temperature can only be read out on
the user interface

N/A [8-06] Leaving water temperature maximum

modulation:

0°C~10°C (default: 3°C)

Requires modulation to be enabled.

This is the value by which the desired
leaving water temperature is increased
or lowered.

INFORMATION

Only applicable for the main zone.

INFORMATION

When leaving water temperature modulation is enabled,
the weather‑dependent curve needs to be set to a higher
position than [8-06] plus the minimum leaving water
temperature setpoint required to reach a stable condition
on the comfort setpoint for the room. To increase
efficiency, modulation can lower the leaving water setpoint.
By setting the weather‑dependent curve to a higher
position, it cannot drop below the minimum setpoint. Refer
to the illustration below.

8.2.6 Domestic hot water control

Configuring the desired tank temperature

The domestic hot water can be prepared in 3 different ways. They
differ from each other by the way the desired tank temperature is set
and how the unit acts upon it.

# Code Description

[A.4.1] [6-0D] Domestic hot water Type:

▪ 0 (Reheat only): Only reheat operation

is allowed.

▪ 1 (Reheat + sched.): The domestic hot

water tank is heated according to a
schedule and between the scheduled
heatup cycles, reheat operation is
allowed.

▪ 2 (Scheduled only): The domestic hot

water tank can ONLY be heated
according to a schedule.

See "8.3.2 Domestic hot water control: advanced" on page 53 for
more details.

INFORMATION

There is a risk of space heating capacity shortage/comfort
problem (in case of frequent domestic hot water operation,
frequent and long space heating interruption will happen)
when selecting [6‑0D]=0 ([A.4.1] Domestic hot water
Type=Reheat only).

Maximum DHWtemperature setpoint

The maximum temperature that users can select for the domestic
hot water. You can use this setting to limit the temperatures at the
hot water taps.

a Weather-dependent curve

b Minimum leaving water temperature setpoint required to

reach a stable condition on the comfort setpoint for the
room.

Leaving water temperature: Emitter type

This setting only applies to the main zone. Only applicable in case of
room thermostat control. Depending on the system water volume
and the heat emitters type, the heat up of a space can take longer.
This setting can compensate for a slow or a quick heating system
during the heat up cycle.

Note: The setting of the emitter type will influence the maximum
modulation of the desired leaving water temperature.

Therefore it is important to set this correctly.

# Code Description

[A.3.1.1.7] [9-0B] Emitter type:

Set for the main temperature zone.

Reaction time of the system:

▪ Quick Example: Small water volume

and fan coils.

▪ Slow Example: Large water volume,

floor heating loops.

INFORMATION

During disinfection of the domestic hot water tank, the
DHWtemperature can exceed this maximum temperature.

INFORMATION

Limit the maximum hot water temperature according to the
applicable legislation.

# Code Description

[A.4.5] [6-0E] Maximum setpoint

The maximum temperature that users
can select for the domestic hot water.
You can use this setting to limit the
temperature at the hot water taps.
Range: 40°C~60°C (default: 60°C).

The maximum temperature is NOT
applicable during disinfection function.
See disinfection function.

8.2.7 Contact/helpdesk number

# Code Description

[6.3.2] N/A Number that users can call in case of

problems.

8.3 Advanced configuration/ optimization

8.3.1 Space heating operation: advanced

Preset leaving water temperature

You can define preset leaving water temperatures:

Installer reference guide

50

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

8 Configuration

T

t

T

A

R

L

0°C

T

t

T

A

R

L

0°C

a b

▪ economic (denotes the desired leaving water temperature which

results in the lowest energy consumption)

▪ comfort (denotes the desired leaving water temperature which

results in the highest energy consumption).

Preset values make it easy to use the same value in the schedule or
to adjust the desired leaving water temperature according to the
room temperature (see modulation). If you later want to change the
value, you ONLY have to do it in one place. Depending on whether
the desired leaving water temperature is weather dependent or NOT,
the desired shift values or the absolute desired leaving water
temperature should be specified.

NOTICE

The preset leaving water temperatures are ONLY
applicable for the main zone, as the schedule for the
additional zone consists of On/OFF actions.

NOTICE

Select preset leaving water temperatures in accordance
with the design and selected heat emitters to ensure the
balance between desired room and leaving water
temperatures.

# Code Description

Preset leaving water temperature for the main leaving water
temperature zone in case of NOT weather dependent

[7.4.2.1] [8-09] Comfort (heating)

[9‑01]°C~[9‑00]°C (default: 35°C)

[7.4.2.2] [8-0A] Eco (heating)

[9‑01]°C~[9‑00]°C (default: 33°C)

Preset leaving water temperature (shift value) for the main leaving
water temperature zone in case of weather dependent

[7.4.2.5] N/A Comfort (heating)

–10°C~+10°C (default: 0°C)

[7.4.2.6] N/A Eco (heating)

–10°C~+10°C (default: –2°C)

Temperature ranges (leaving water temperatures)

The purpose of this setting is to prevent selecting a wrong (i.e. too
hot or too cold) leaving water temperature. Therefore the available
desired heating temperature range can be configured.

NOTICE

In case of a floor heating application it is important to limit
the maximum leaving water temperature at heating
operation according to the specifications of the floor
heating installation.

Example: Set the minimum leaving water temperature to 28°C to
avoid NOT to be able to heat up the room: leaving water
temperatures MUST be sufficiently higher than the room
temperatures (in heating).

# Code Description

Leaving water temperature range for the main leaving water
temperature zone (= the leaving water temperature zone with the
lowest leaving water temperature)

[A.3.1.1.2.2] [9-00] Maximum temp (heating)

37°C~55°C (default: 55°C)

[A.3.1.1.2.1] [9-01] Minimum temp (heating)

15°C~37°C (default: 25°C)

Leaving water temperature range for the additional leaving water
temperature zone (= the leaving water temperature zone with the
highest leaving water temperature)

[A.3.1.2.2.2] [9-06] Maximum temp (heating)

37°C~55°C (default: 55°C)

[A.3.1.2.2.1] [9-05] Minimum temp (heating)

15°C~37°C (default: 25°C)

Leaving water temperature overshoot temperature

This function defines how much the water temperature may rise
above the desired leaving water temperature before the compressor
stops. The compressor will startup again when the leaving water
temperature drops below the desired leaving water temperature.

# Code Description

N/A [9-04] 1°C~4°C (default: 1°C)

Leaving water temperature compensation around 0°C

In heating operation, the desired leaving water temperature is locally
increased around an outdoor temperature of 0°C. This
compensation can be selected when using an absolute or a weather
dependent desired temperature (see illustration below). Use this
setting to compensate for possible heat losses of the building due to
the evaporation of melted ice or snow (e.g. in cold region countries).

NOTICE

▪ When adjusting the leaving water temperature ranges,

all desired leaving water temperatures are also
adjusted to guarantee they are between the limits.

▪ Always balance between the desired leaving water

temperature with the desired room temperature and/or
the capacity (according to the design and selection of
the heat emitters). The desired leaving water
temperature is the result of several settings (preset
values, shift values, weather dependent curves,
modulation). As a result, too high or too low leaving
water temperatures could occur which lead to
overtemperatures or capacity shortage. By limiting the
leaving water temperature range to adequate values
(depending on the heat emitter), such situations can be
avoided.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

a Absolute desired LWT
b Weather dependent desired LWT

TAAmbient temperature (°C)

TtDesired leaving water temperature

# Code Description

N/A [D-03] ▪ 0 (disabled) (default)

▪ 1 (enabled) L=2°C,

R=4°C (−2°C<TA<2°C)

▪ 2 (enabled) L=4°C,

R=4°C (−2°C<TA<2°C)

▪ 3 (enabled) L=2°C,

R=8°C (−4°C<TA<4°C)

▪ 4 (enabled) L=4°C,

R=8°C (−4°C<TA<4°C)

Installer reference guide

51

8 Configuration

[

9-0C

]

a

b

c

d

Leaving water temperature maximum modulation

ONLY applicable in room thermostat control and when modulation is
enabled. The maximum modulation (=variance) on the desired
leaving water temperature decided on the difference between the
actual and desired room temperature, e.g. 3°C modulation means
the desired leaving water temperature can be increased or lowered
by 3°C. Increasing the modulation results in better performance (less
On/OFF, faster heat up), but note that depending on the heat
emitter, there MUST ALWAYS be a balance (refer to the design and
selection of the heat emitters) between the desired leaving water
temperature and the desired room temperature.

# Code Description

N/A [8-06] 0°C~10°C (default: 3°C)

Temperature ranges (room temperature)

ONLY applicable in room thermostat control. In order to save energy
by preventing overheating the room, you can limit the range of the
room temperature.

NOTICE

When adjusting the room temperature ranges, all desired
room temperatures are also adjusted to guarantee they are
between the limits.

# Code Description

Room temp. range

[A.3.2.1.2] [3-06] Maximum temp (heating)

18°C~30°C (default: 30°C)

[A.3.2.1.1] [3-07] Minimum temp (heating)

12°C~18°C (default: 12°C)

Room temperature step

ONLY applicable in room thermostat control and when the
temperature is displayed in °C.

# Code Description

[A.3.2.4] N/A Room temp. step

▪ 1°C (default). The desired room

temperature on the user interface is
settable per 1°C.

▪ 0.5°C. The desired room temperature

on the user interface is settable per

0.5°C. The actual room temperature is
displayed with an accuracy of 0.1°C.

Room temperature hysteresis

ONLY applicable in case of room thermostat control. The hysteresis
band around the desired room temperature is settable. It is
recommended NOT to change the room temperature hysteresis as it
is set for an optimal use of the system.

interface or by the external room sensor. The settings can be used
to compensate for situations where the user interface or external
room sensor CANNOT be installed on the ideal installation location
(see installation manual and/or installer reference guide).

# Code Description

Room temp. offset: Offset on the actual room temperature
measured on the user interface sensor.

[A.3.2.2] [2-0A] –5°C~+5°C, step 0.5°C (default: 0°C)

Ext. room sensor offset: ONLY applicable if the external room
sensor option is installed and configured (see [C-08])

[A.3.2.3] [2-09] –5°C~+5°C, step 0.5°C (default: 0°C)

Room frost protection

Room frost protection prevents the room from getting too cold. This
setting behaves differently depending on the set unit control method
([C‑07]). Perform actions according to the table below:

Unit control method ([C‑07]) Room frost protection

Room thermostat control
([C‑07]=2)

Allow for the room thermostat to
take care of room frost
protection:

▪ Set [2‑06] to "1"

▪ Set the room antifrost

temperature ([2‑05]).

External room thermostat control
([C‑07]=1)

Allow for the external room
thermostat to take care of room
frost protection:

▪ Turn ON the leaving water

temperature home page.

Leaving water temperature
control ([C‑07]=0)

Room frost protection is NOT
guaranteed.

NOTICE

If the system does NOT contain a backup heater, do NOT
change the default room antifrost temperature.

INFORMATION

If a U4 error occurs, room frost protection is NOT
guaranteed.

Refer to the sections below for detailed information on room frost
protection in relation to the applicable unit control method.

[C‑07]=2: room thermostat control

Under room thermostat control, room frost protection is guaranteed,
even if the room temperature home page is OFF on the user
interface. When room frost protection ([2‑06]) is enabled and the
room temperature drops below the room antifrost temperature
([2‑05]), the unit will supply leaving water to the heat emitters to heat
up the room again.

a Room temperature

b Actual room temperature

c Desired room temperature

d Time

# Code Description

N/A [9-0C] 1°C~6°C (default: 1°C)

Room temperature offset

ONLY applicable in case of room thermostat control. You can
calibrate the (external) room temperature sensor. It is possible to
give an offset to the room thermistor value measured by the user

Installer reference guide

52

# Code Description

N/A [2-06] Room frost protection

▪ 0: disabled

▪ 1: enabled (default)

N/A [2-05] Room antifrost temperature

4°C~16°C (default: 12°C)

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

8 Configuration

INFORMATION

If a U5 error occurs:

▪ when 1 user interface is connected, room frost

protection is NOT guaranteed,

▪ when 2 user interfaces are connected and the second

user interface used for room temperature control is
disconnected (due to miswiring, damage of the cable),
then room frost protection is NOT guaranteed.

NOTICE

If Emergency is set to Manual ([A.6.C]=0), and the unit is
triggered to start emergency operation, the user interface
will ask confirmation before starting. Room frost protection
is active even if the user does NOT confirm emergency
operation.

[C‑07]=1: external room thermostat control

Under external room thermostat control, room frost protection is
guaranteed by the external room thermostat, provided that the
leaving water temperature home page is ON on the user interface,
and the auto emergency setting ([A.6.C]) is set to "1".

Additionally, limited frost protection by the unit is possible:

In case of… …then the following applies:

Two leaving water temperature
zones

[C‑07]=0: leaving water temperature control

Under leaving water temperature control, room frost protection is
NOT guaranteed. However, if [2‑06] is set to "1", limited frost
protection by the unit is possible:

▪ When the leaving water temperature home page is OFF and the

outdoor ambient temperature drops below 4°C, then the unit will
supply leaving water to the heat emitters to heat up the room
again, and the leaving water temperature setpoint will be lowered.

▪ When the leaving water temperature home page is ON, then the

unit will supply leaving water to the heat emitters to heat up the
room according to normal logic.

Shut-off valve

The following is only applicable in case of 2 leaving water
temperature zones. In case of 1 leaving water temperature zone,
connect the shut-off valve to the heating output.

The shut-off valve, which is in the main leaving water temperature
zone, output is configurable.

INFORMATION

During defrost operation, the shut-off valve is ALWAYS
opened.

▪ When the leaving water

temperature home page is
OFF, and the outdoor ambient
temperature drops below 4°C,
then the unit will supply
leaving water to the heat
emitters to heat up the room
again, and the leaving water
temperature setpoint will be
lowered.

▪ When the leaving water

temperature home page is ON,
the outdoor ambient
temperature drops below 4°C,
then the unit will supply
leaving water to the heat
emitters to heat up the room
again, and the leaving water
temperature setpoint will be
lowered.

Thermo On/OFF: the valve closes, depending on [F‑0B] when there
is no heating demand from the main zone.

# Code Description

[A.3.1.1.6.1] [F-0B] The shut-off valve:

▪ 0 (No)(default): is NOT influenced by

heating demand.

▪ 1 (Yes): closes when there is NO

heating demand.

INFORMATION

The setting [F‑0B] is only valid when there is a thermostat
or external room thermostat request setting (NOT in case
of leaving water temperature setting).

Operation range

Depending on the average outdoor temperature, the operation of the
unit in space heating is prohibited.

Space heating OFF temp: When the averaged outdoor temperature
raises above this value, space heating is turned OFF to avoid
overheating.

# Code Description

[A.3.3.1] [4-02] ▪ EHVZ04+08: 14°C~35°C (default:

25°C)

▪ EHVZ16: 14°C~35°C (default: 35°C)

8.3.2 Domestic hot water control: advanced

Preset tank temperatures

Only applicable when domestic hot water preparation is scheduled
or scheduled + reheat.

You can define preset tank temperatures:

▪ storage economic

▪ storage comfort

▪ reheat

▪ reheat hysteresis

Preset values make it easy to use the same value in the schedule. If
you later want to change the value, you only have to do it in 1 place
(see also operation manual and/or user reference guide).

Storage comfort

When programming the schedule, you can make use of the tank
temperatures set as preset values. The tank will then heat up until
these setpoint temperatures have been reached. Additionally, a
storage stop can be programmed. This feature puts a stop to tank
heating even if the setpoint has NOT been reached. Only program a
storage stop when tank heating is absolutely undesirable.

# Code Description

[7.4.3.1] [6-0A] 30°C~[6‑0E]°C (default: 60°C)

Storage eco

The storage economic temperature denotes the lower desired tank
temperature. It is the desired temperature when a storage economic
action is scheduled (preferably during day).

# Code Description

[7.4.3.2] [6-0B] 30°C~min(50, [6‑0E])°C (default: 45°C)

Reheat

The desired reheat tank temperature is used:

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

53

8 Configuration

T

DHW

T

a

[0-0C]

[0-0B]

[0-0E] [0-0D]

t

T

DHW

T

HP ON

T

HP OFF

T

HP MAX

T

U=TBUH OFF

[6-01]
[6-00]

TU= 60°C
T

HP MAX

= 50°C
[6-01] = 2°C
[6-00] = 2°C

HP

BUH

HP

5

10

20

30

40

46

48

50

60

▪ in reheat mode of scheduled + reheat mode: The guaranteed

minimum tank temperature is set by T

–[6‑08], which is either

HP OFF

[6‑0C] or the weather dependent setpoint, minus the reheat
hysteresis. If the tank temperature drops below this value, the tank
is heated up.

▪ during storage comfort, to prioritize the domestic hot water

preparation. When the tank temperature raises above this value,
domestic hot water preparation and space heating is executed
sequentially.

# Code Description

[7.4.3.3] [6-0C] 30°C~min(50, [6‑0E])°C (default: 45°C)

Reheat hysteresis

Only applicable when domestic hot water preparation is scheduled +
reheat.

# Code Description

N/A [6-08] 2°C~20°C (default: 10°C)

Weather dependent

The weather dependent installer settings define the parameters for
the weather dependent operation of the unit. When weather
dependent operation is active the desired tank temperature is
determined automatically depending on the averaged outdoor
temperature: low outdoor temperatures will result in higher desired
tank temperatures as the cold water tap is colder and vice versa. In
case of scheduled or scheduled+reheat domestic hot water
preparation, the storage comfort temperature is weather dependent
(according to the weather dependent curve), the storage economic
and reheat temperature are NOT weather dependent. In case of
reheat only domestic hot water preparation, the desired tank
temperature is weather dependent (according to the weather
dependent curve). During weather dependent operation, the end­user cannot adjust the desired tank temperature on the user
interface.

# Code Description

[A.4.6] N/A Weather dependent desired tank

temperature is:

▪ Fixed (default): disabled. All desired

tank temperature are NOT weather
dependent.

▪ Weather dep.: enabled. In scheduled

or scheduled+reheat mode, the
storage comfort temperature is
weather dependent. Storage economic
and reheat temperatures are NOT
weather dependent. In reheat mode,
the desired tank temperature is
weather dependent.
Note: When the displayed tank
temperature is weather dependent, it
cannot be adjusted on the user
interface.

# Code Description

[A.4.7] [0-0E]

Weather-dependent curve

[0-0D]

[0-0C]

[0-0B]

▪ T

: The desired tank temperature.

DHW

▪ Ta: The (averaged) outdoor ambient

temperature

▪ [0-0E]: low outdoor ambient

temperature: –40°C~5°C (default: –
10°C)

▪ [0-0D]: high outdoor ambient

temperature: 10°C~25°C (default:
15°C)

▪ [0-0C]: desired tank temperature when

the outdoor temperature equals or
drops below the low ambient
temperature: 45°C~[6‑0E]°C (default:
60°C)

▪ [0-0B]: desired tank temperature when

the outdoor temperature equals or
rises above the high ambient
temperature: 35°C~[6‑0E]°C (default:
55°C)

Limits on heat pump operation

In domestic hot water operation, following hysteresis values can be
set for the heat pump operation:

# Code Description

N/A [6-00] The temperature difference determining

the heat pump ON temperature.

Range: 2°C~20°C (default: 2°C)

N/A [6-01] The temperature difference determining

the heat pump OFF temperature.

Range: 0°C~10°C (default: 2°C)

Example: setpoint (TU)>maximum heat pump temperature–[6‑01]
(T

–[6‑01])

HP MAX

Installer reference guide

54

BUH Backup heater

HP Heat pump. If heating up time by the heat pump takes too

T

long, auxiliary heating by the backup heater can take place
Backup heater OFF temperature (TU)

BUH OFF

T

Maximum heat pump temperature at sensor in domestic

HP MAX

hot water tank

T

Heat pump OFF temperature (T

HP OFF

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

−[6-01])

HP MAX

4P401677-1B – 2017.04

T

t

[6-00]

HP

5

10

20

30

40

43

45

TU=T

HP OFF

T

HP MAX

T

DHW

T

HP ON

50

t

1

0

1

0

[8-01] [8-02]

[8-00]

t

T

A

0

[8-01]

[5-03] [4-02]

[8-02]

[8-01]+

[8-04]

Heat pump ON temperature (T

HP ON

T

Domestic hot water temperature

DHW

TUUser set point temperature (as set on the user interface)

t Time

HP OFF

−[6-00])

Example: setpoint (TU)≤maximum heat pump temperature–[6‑01]
(T

–[6‑01])

HP MAX

8 Configuration

# Code Description

N/A [8-04] Additional running time for the maximum

running time depending on the outdoor
temperature [4‑02].

Range: 0~95 minutes (default: 95).

[8-02]: Anti-recycling time

Timers for simultaneous request space and domestic hot water
operation

N/A [8-00] Do not change. (default: 1)

N/A [8-01] Maximum running time for domestic hot

N/A [8-02] Anti-recycling time.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

HP Heat pump. If heating up time by the heat pump takes too

long, auxiliary heating by the booster heater can take place

T

Maximum heat pump temperature at sensor in domestic

HP MAX

hot water tank

T

Heat pump OFF temperature (T

HP OFF

T

Heat pump ON temperature (T

HP ON

T

Domestic hot water temperature

DHW

TUUser set point temperature (as set on the user interface)

t Time

HP MAX

HP OFF

−[6-01])

−[6-00])

INFORMATION

The maximum heat pump temperature depends on the
ambient temperature. For more information, see the
operation range.

# Code Description

water operation. Domestic hot water
heating stops even when the target
domestic hot water temperature is NOT
reached. The actual maximum running
time also depends on setting [8‑04].

▪ When system layout = Room

thermostat control: This preset value is
only taken into account if there is a
request for space heating. If there is
NO request for space heating, the tank
is heated until the setpoint has been
reached.

▪ When system layout ≠ Room

thermostat control: This preset value is
always taken into account.

Range: 5~95 minutes (default: 30)

Minimum time between two cycles for
domestic hot water. The actual anti­recycling time also depends on setting
[8‑04].

Range: 0~10 hours (default: 0.5) (step:

0.5 hour).

Remark: The minimum time is 1/2 hour
even when the selected value is 0.

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

active)

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

t Time

[8-04]: Additional running time at [4-02]/[F-01]

TAAmbient (outdoor) temperature

t Time

Anti-recycle time
Maximum running time domestic hot water

Disinfection

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

CAUTION

The disinfection function settings MUST be configured by
the installer according to the applicable legislation.

# Code Description

[A.4.4.2] [2‑00] Operation day:

▪ 0: Each day

▪ 1: Monday

▪ 2: Tuesday

▪ 3: Wednesday

▪ 4: Thursday

▪ 5: Friday

▪ 6: Saturday

▪ 7: Sunday

[A.4.4.1] [2‑01] Disinfection

▪ 0: No

▪ 1: Yes

[A.4.4.3] [2‑02] Start time: 00~23:00, step: 1:00.

[A.4.4.4] [2‑03] Temperature target: 60°C (fixed).

[A.4.4.5] [2‑04] Duration: 40~60 minutes, default: 40

minutes.

Installer reference guide

55

8 Configuration

00.00 22.00 24.0001.00 23.00 t

T

DHW

T

H

T

U

[2-02]

[2-03]

[2-04]

T

Domestic hot water temperature

DHW

TUUser set point temperature
THHigh set point temperature [2-03]

t Time

WARNING

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

When the high domestic hot water temperature can be a
potential risk for human injuries, a mixing valve (field
supply) shall be installed at the hot water outlet connection
of the domestic hot water tank. This mixing valve shall
secure that the hot water temperature at the hot water tap
never rise above a set maximum value. This maximum
allowable hot water temperature shall be selected
according to the applicable legislation.

CAUTION

Be sure that the disinfection function start time [A.4.4.3]
with defined duration [A.4.4.5] is NOT interrupted by
possible domestic hot water demand.

INFORMATION

In case of error code AH and no interruption of the
disinfection function occurred due to domestic hot water
tapping, following actions are recommended:

▪ When the Domestic hot water > Type > Reheat or

Reheat + sched. is selected, it is recommended to
program the start-up of the disinfection function at least
4 hours later than the last expected large hot water
tapping. This start-up can be set by installer settings
(disinfection function).

▪ When the Domestic hot water > Type > Scheduled only

is selected, it is recommended to program a Storage
eco 3 hours before the scheduled start-up of the
disinfection function to preheat the tank.

INFORMATION

Disinfection function is restarted in case the domestic hot
water temperature drops 5°C below the disinfection target
temperature within the duration time.

8.3.3 Heat source settings

Backup heater

Backup heater operation mode: defines when backup heater
operation is disabled or only allowed during domestic hot water
operation. This setting is only overruled when backup heating is
required during defrost operation or malfunctioning of the outdoor
unit (when [A.6.C] is enabled).

# Code Description

[A.5.1.1] [4‑00] Backup heater operation:

▪ 0: Disabled

▪ 1 (default): Enabled

N/A [5-00] Is backup heater operation allowed

[A.5.1.4] [5‑01] Equilibrium temperature.

INFORMATION

If backup heater operation during space heating needs to
be limited but can be allowed for domestic hot water
operation, then put [4‑00] on 1, [5‑00] on 1, and [5‑01] on –
15°C.

Auto emergency

When the heat pump fails to operate, the backup heater can serve
as an emergency heater and either automatically or non­automatically take over the heat load.

▪ When auto emergency is set to Automatic and a heat pump failure

occurs, the backup heater will automatically take over the heat
load.

▪ When auto emergency is set to Manual and a heat pump failure

occurs, the domestic hot water and space heating operations will
stop and need to be recovered manually. The user interface will
then ask you to confirm whether the backup heater can take over
the heat load or not.

When the heat pump fails,
house is unattended for longer periods, we recommend to set
[A.6.C] Emergency to Automatic.

# Code Description

[A.6.C] N/A Emergency:

above equilibrium temperature during
space heating operation?

▪ 1: NOT allowed (default)

▪ 0: Allowed

Outdoor temperature below which
operation of the backup heater is
allowed.

Range: –15°C~35°C (default: 0°C) (step:
1°C)

will appear on the user interface. If the

▪ 0: Manual (default)

▪ 1: Automatic

INFORMATION

An AH error occurs if you do the following during
disinfection:

▪ Set the user permission level to Installer.

▪ Go to the DHWtank temperature home page (Tank).

Installer reference guide

▪ Press

to interrupt the disinfection.

56

INFORMATION

The auto emergency setting can be set in the menu
structure of the user interface only.

INFORMATION

If a heat pump failure occurs and [A.6.C] is set to Manual,
the room frost protection function, the underfloor heating
screed dryout function, and the water pipe antifreeze
function will remain active even if the user does NOT
confirm emergency operation.

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

8 Configuration

T

A

[F-02]

[F-03]

a

b

YC Y1 Y2 Y3 Y4

X1 X2 X3 X4

OFF ON

X2M

SS1

X1M

Bottom plate heater

Applies only to installation with an outdoor unit ERHQ and the option
bottom plate heater kit is installed.

▪ [F-02] Bottom plate heater ON temperature: defines the outdoor

temperature below which the bottom plate heater will be activated
by indoor unit in order to prevent ice build-up in the bottom plate of
the outdoor unit at lower outdoor temperatures.

▪ [F-03] Bottom plate heater hysteresis: defines the temperature

difference between bottom plate heater ON temperature and the
bottom plate heater OFF temperature.

Bottom plate heater

TAOutdoor temperature

a On

b OFF

CAUTION

The bottom plate heater is controlled via EKRP1HB.

# Code Description

N/A [F-02] Bottom plate heater ON temperature:

3°C~10°C (default: 3°C)

N/A [F-03] Hysteresis: 2°C~5°C (default: 5°C)

INFORMATION

Depending on setting [F-04], contact Y2, located on digital
I/O PCB EKRP1HB, controls the optional bottom plate
heater. See the illustration below for the schematic location
of this contact. For the complete wiring, see the wiring
diagram.

8.3.4 System settings

Priorities

# Code Description

N/A [5‑02] Space heating priority.

Defines whether backup heater will
assist the heat pump during domestic
hot water operation.

Consequence: Shorter tank heating
operation time and shorter interruption
of the space heating cycle.

This setting MUST always be 1.

[5‑01] Equilibrium temperature and
[5‑03] Space heating priority
temperature are related to backup
heater. So, you must set [5‑03] equal or
a few degrees higher than [5‑01].

If the backup heater operation is limited
([4‑00]=0) and the outdoor temperature
is lower than setting [5‑03], the
domestic hot water will not be heated
with the backup heater.

N/A [5‑03] Space heating priority temperature.

Defines the outdoor temperature which
below the backup heater will assist
during domestic hot water heating.

Auto-restart

When power returns after a power supply failure, the auto restart
function reapplies the remote controller settings at the time of the
power failure. Therefore, it is recommended to always enable the
function.

If the preferential kWh rate power supply is of the type that power
supply is interrupted, always enable the auto restart function.
Continuous indoor unit control can be guaranteed independent of the
preferential kWh rate power supply status, by connecting the indoor
unit to a normal kWh rate power supply.

# Code Description

[A.6.1] [3‑00] Is the auto restart function of the unit

allowed?

▪ 0: No

▪ 1 (default): Yes

Preferential kWh rate power supply

INFORMATION

The preferential kWh rate power supply contact is
connected to the same terminals (X5M/3+4) as the safety
thermostat for the additional zone. It is only possible for the
system to have EITHER preferential kWh rate power
supply OR a safety thermostat for the additional zone.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

57

8 Configuration

3×

1 2 3

# Code Description

[A.2.1.6] [D‑01] Connection to a preferential kWh rate

power supply:

▪ 0 (default): The outdoor unit is

connected to a normal power supply.

▪ 1: The outdoor unit is connected to a

preferential kWh rate power supply.
When the preferential kWh rate signal
is sent by the electricity company, the
contact will open and the unit will go in
forced off mode. When the signal is
released again, the voltage-free
contact will close and the unit will
restart operation. Therefore, always
enable the auto restart function.

▪ 2: The outdoor unit is connected to a

preferential kWh rate power supply.
When the preferential kWh rate signal
is sent by the electricity company, the
contact will close and the unit will go in
forced off mode. When the signal is
released again, the voltage-free
contact will open and the unit will
restart operation. Therefore, always
enable the auto restart function.

Remark: 3 is related to safety
thermostat.

[A.6.2.1] [D‑00] Which heaters are allowed to operate

during preferential kWh rate power
supply?

▪ 0 (default): None

▪ 1: N/A

▪ 2: Backup heater only

▪ 3: N/A

INFORMATION

The preferential kWh rate power supply contact is
connected to the same terminals (X5M/3+4) as the safety
thermostat for the additional zone. It is only possible for the
system to have EITHER preferential kWh rate power
supply OR a safety thermostat for the additional zone.

Power saving function

INFORMATION

Only applicable for ERLQ004~008CAV3.

Defines whether the outdoor unit power supply can be interrupted
(internally by indoor unit control) during stand-still conditions (no
space heating nor domestic hot water demand). The final decision to
allow power interruption of the outdoor unit during standstill depends
on the ambient temperature, compressor conditions and minimum
internal timers.

To enable the power saving function setting, [E‑08] needs to be
enabled on the user interface in combination with the removal of the
power saving connector at the outdoor unit.

NOTICE

The power saving connector at the outdoor unit shall only
be removed when the main power supply to the application
is switched OFF.

In case of ERLQ004~008CAV3

See table below.

Setting 2 is only meaningful if the
preferential kWh rate power supply is of
type1 or indoor unit is connected to a
normal kWh rate power supply (via
X2M/30-31) and the backup heater is
NOT connected to the preferential kWh
rate power supply.

Do NOT use 1 or 3.

[D‑00] Backup heater Compressor

0 (default) Forced OFF Forced OFF

2 Allowed

Safety thermostat for the additional zone

The following setting is related to the safety thermostat for the
additional zone. For more information about the safety thermostat for
the main zone, see "7.9.17To connect the safety thermostat (normal

closed contact)"on page40.

# Code Description

[A.2.1.6] [D‑01] Connection to a safety thermostat

voltage free contact:

▪ 0 (default): No safety thermostat.

▪ 3: Safety thermostat normal closed

contact.

Remark: 1+2 are related to preferential
kWh rate power supply.

# Code Description

N/A [E‑08] Power saving function for outdoor unit:

▪ 0: Disabled

▪ 1 (default): Enabled

In case of ERHQ011~016BAV3, ERHQ011~016BAW1,
ERLQ011~016CAV3, and ERLQ011~016CAW1

Do NOT change the default setting.

# Code Description

N/A [E-08] Power saving function for outdoor unit:

▪ 0 (default): Disabled

▪ 1: Enabled

Installer reference guide

58

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

8 Configuration

Power consumption control

Only applicable for EHVZ04+08. See "5 Application guidelines" on

page11 for detailed information about this functionality.

Pwr consumpt. control

# Code Description

[A.6.3.1] [4-08] Mode:

▪ 0 (No limitation)(default): Disabled.

▪ 1 (Continuous): Enabled: You can

set one power limitation value (in A
or kW) to which the system power
consumption will be limited for all the
time.

▪ 2 (Digital inputs): Enabled: You can

set up to four different power
limitation values (in A or kW) to
which the system power
consumption will be limited when the
corresponding digital input asks.

[A.6.3.2] [4-09] Type:

▪ 0 (Current): The limitation values are

set in A.

▪ 1 (Power)(default): The limitation

values are set in kW.

[A.6.3.3] [5-05] Value: Only applicable in case of full

time power limitation mode.

0A~50A, step: 1A (default: 50A)

[A.6.3.4] [5-09] Value: Only applicable in case of full

time power limitation mode.

0kW~20kW, step: 0.5kW (default:
20kW)

Amp. limits for DI: Only applicable in case of power limitation mode
based on digital inputs and based on current values.

[A.6.3.5.1] [5-05] Limit DI1

0A~50A, step: 1A (default: 50A)

[A.6.3.5.2] [5-06] Limit DI2

0A~50A, step: 1A (default: 50A)

[A.6.3.5.3] [5-07] Limit DI3

0A~50A, step: 1A (default: 50A)

[A.6.3.5.4] [5-08] Limit DI4

0A~50A, step: 1A (default: 50A)

kW limits for DI: Only applicable in case of power limitation mode
based on digital inputs and based on power values.

[A.6.3.6.1] [5-09] Limit DI1

0kW~20kW, step: 0.5kW (default:
20kW)

[A.6.3.6.2] [5-0A] Limit DI2

0kW~20kW, step: 0.5kW (default:
20kW)

[A.6.3.6.3] [5-0B] Limit DI3

0kW~20kW, step: 0.5kW (default:
20kW)

[A.6.3.6.4] [5-0C] Limit DI4

0kW~20kW, step: 0.5kW (default:
20kW)

[A.6.3.7] [4-01] Priority: Not applicable.

The outdoor temperature is averaged over the selected time period.

# Code Description

[A.6.4] [1-0A] Outdoor average timer:

▪ 0: No averaging (default)

▪ 1: 12hours

▪ 2: 24hours

▪ 3: 48hours

▪ 4: 72hours

INFORMATION

If the power saving function is activated (see [E‑08]), the
average outdoor temperature calculation is only possible in
case the external outdoor temperature sensor is used. See

"5.6 Setting up an external temperature sensor" on
page15.

Offset temperature external outdoor ambient sensor

Only applicable in case of an external outdoor ambient sensor is
installed and configured.

You can calibrate the external outdoor ambient temperature sensor.
It is possible to give an offset to the thermistor value. The setting can
be used to compensate for situations where the external outdoor
ambient sensor cannot be installed on the ideal installation location
(see installation).

# Code Description

[A.6.5] [2‑0B] –5°C~5°C, step: 0.5°C (default: 0°C)

Forced defrost

You can manually start a defrost operation.

The decision to execute the manual defrost operation is made by the
outdoor unit and depends on ambient and heat exchanger
conditions. When the outdoor unit accepted the forced defrost
operation, will be displayed on the user interface. If is NOT
displayed within 6 minutes after forced defrost operation was
enabled, the outdoor unit ignored the forced defrost request.

# Code Description

[A.6.6] N/A Do you want to start a defrost operation?

Pump operation

When the pump operation function is disabled the pump will stop if
the outdoor temperature is higher than the value set by [4‑02]. When
the pump operation is enabled, the pump operation is possible at all
outdoor temperatures.

# Code Description

N/A [F‑00] Pump operation:

▪ 0 (default): Disabled if outdoor

temperature is higher than [4‑02].

▪ 1: Possible at all outdoor

temperatures.

Pump operation during flow abnormality [F‑09] defines whether the
pump stops at flow abnormality or allow to continue operation when
flow abnormality occurs. This functionality is only valid in specific
conditions where it is preferable to keep the pump active when
Ta<4°C (pump will be activated for 10 minutes and deactivated after
10 minutes). Daikin shall NOT be held liable for any damage
resulting this functionality.

Average timer

The average timer corrects the influence of ambient temperature
variations. The weather-dependent set point calculation is done on
the average outdoor temperature.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

59

8 Configuration

[9-0D]=0 [9-0D]=5

a (kPa)

b (l/min)

a (kPa)

b (l/min)

a (kPa)

b (l/min)

a (kPa)

b (l/min)

[9-0D]=6 [9-0D]=7

[9-0D]=8

a (kPa)

b (l/min)

# Code Description

N/A [F‑09] Pump continue operation when flow

abnormality:

▪ 0 (default): Pump will be deactivated.

▪ 1: Pump will be activated when

Ta<4°C (10 minutes ON – 10 minutes
OFF)

Pump speed limitation

Pump speed limitation main zone [9‑0E] and pump speed limitation
additional zone [9‑0D] define the maximum pump speed. In normal
conditions, the default setting should NOT be modified. The pump
speed limitation will be overruled when the flow rate is in the range
of the minimum flow (error 7H).

# Code Description

N/A [9‑0E] Pump speed limitation main zone

▪ 0: No limitation.

▪ 1~4: General limitation. There is

limitation in all conditions. The
required delta T control and comfort
are NOT guaranteed.

▪ 5~8 (default: 6): Limitation when no

actuators. When there is no heating
output, the pump speed limitation is
applicable. When there is heating
output, the pump speed is only
determined by delta T in relation to the
required capacity. With this limitation
range, delta T is possible and the
comfort is guaranteed.

N/A [9‑0D] Pump speed limitation additional zone

▪ 0: No limitation.

▪ 1~4: General limitation. There is

limitation in all conditions. The
required delta T control and comfort
are NOT guaranteed.

▪ 5~8 (default: 6): Limitation when no

actuators. When there is no heating
output, the pump speed limitation is
applicable. When there is heating
output, the pump speed is only
determined by delta T in relation to the
required capacity. With this limitation
range, delta T is possible and the
comfort is guaranteed.

The maximum values depend on the unit type:

a External static pressure
b Water flow rate

Installer reference guide

60

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

8.4 Menu structure: Overview user settings

< >

[1]

[2]

[5]

[6]

[7]

[2]

[6.2]

[6.3]

[6.8]

[7.1]

[7.4]

[7.3]

[3]

Set time/date

Date
Time
Daylight Saving Time
Clock type

Holiday

Holiday

Holiday

Holiday

Holiday mode

Holiday mode

Home

Away

From

Until

Until

From

Use day schedule

Operation mode
Heating

Quiet mode

Select schedules

Room temperature
LWT main
LWT additional
Tank temperature

Information

Sensor information
Energy metering
Error handling
User permission level
Actuators
Operation modes

Running hours
Version

Energy metering

Consumed elec.

Produced energy

Error information

Error history
Contact/helpdesk number

Version

User interface
Indoor unit
Outdoor unit

User settings

Display
Temperature lock

Set schedules
Preset values
Unit of measurement

Display

Contrast

Backlit LCD time
User profile
Available home pages

Set schedules

Room temp.
LWT main
LWT additional
DHW temp
Quiet mode

DHW pump

Preset values

Room temperature
LWT main
Tank temperature
Quiet level

DHW

Set weather dependent

Warning history

[7.7]

Set weather dependent

Main
Additional

[7.7.1]

Main

Set weather-dependent heating

[7.7.2]

Additional

Set weather-dependent heating

8 Configuration

INFORMATION

Depending on the selected installer settings, settings will
be visible/invisible.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

61

8 Configuration

[A]

[A.2]

[A.2.1]

[A.2.2]

[A.2.2.6]

[A.3]

[A.3.1]

[A.3.1.1]

[A.3.2]

[A.3.3]

[A.4]

[A.4.4]

[A.5]

[A.5.1]

[A.7]

[A.6]

[A.6.3]

[A.6.2]

Installer settings

Language
System layout
Space operation
Domestic hot water (DHW)
Heat sources
System operation
Commissioning
Overview settings

System layout

Standard
Options
Capacities
Confirm layout

Space operation

LWT settings
Room thermostat
Operation range

Domestic hot water

Type
Disinfection
Maximum setpoint
SP mode
Weather-dependent curve

Heat sources

Backup heater

System operation

Auto restart
Preferential kWh rate
Pwr consumpt. control
Averaging time
Ext amb. sensor offset

Commissioning

Test run
UFH screed dryout
Air purge
Actuator test run

Standard

Unit type
Compressor type
Indoor software type

BUH type

Backup heater steps

Forced off contact
Unit control method
Number of LWT zones
Pump operation mode
Power saving possible
User interface location

Options

DHW operation
DHW tank type
Contact type main
Contact type add.
Digital I/O PCB
Demand PCB
External kWh meter
External kWh meter
DHW pump
External sensor

Leaving water

Main
Additional
Delta T source

Room thermostat

Room temp. range
Room temp. offset

Operation range

Space heating OFF temp

Disinfection

Disinfection
Operation day
Start time
Temperature target
Duration

Backup heater

Operation mode
Enable BUH step 2

Prefer. kWh rate PS

Allowed heaters
Forced pump OFF

Pwr consmp ctrl

Mode
Type
Amp. value
kW value
Amp. limits for DI

Digital I/O PCB

Ext. backup heat src
Solar kit
Alarm output
Bottom plate heater

Main

LWT setpoint mode

Temperature range
Modulated LWT
Shut-off valve

Emitter type

[A.3.1.2]

Additional

LWT setpoint mode
Temperature range

Ext. room sensor offset

[A.3.1.3]

Delta T source

Heating

Forced defrost

Room temp. step

kW limits for DI
Priority

Emergency

Equilibrium temp.

LAN adapter

8.5 Menu structure: Overview installer settings

INFORMATION

Depending on the selected installer settings, settings will
be visible/invisible.

Installer reference guide

62

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

9 Commissioning

9 Commissioning

9.1 Overview: Commissioning

This chapter describes what you have to do and know to
commission the system after it is configured.

Typical workflow

Commissioning typically consists of the following stages:

1 Checking the "Checklist before commissioning".

2 Performing an air purge.

3 Performing a test run for the system.

4 If necessary, performing a test run for one or more actuators.

5 If necessary, performing an underfloor heating screed dryout.

9.2 Precautions when commissioning

INFORMATION

During the first running period of the unit, the required
power may be higher than stated on the nameplate of the
unit. This phenomenon is caused by the compressor, that
needs a continuous run time of 50 hours before reaching
smooth operation and stable power consumption.

NOTICE

Before starting up the system, the unit MUST be energised
for at least 6hours. The crankcase heater needs to heat
up the compressor oil to avoid oil shortage and
compressor breakdown during startup.

NOTICE

NEVER operate the unit without thermistors and/or
pressure sensors/switches. Burning of the compressor
might result.

NOTICE

Do NOT operate the unit until the refrigerant piping is
complete (when operated this way, the compressor will
break).

9.3 Checklist before commissioning

Do NOT operate the system before the following checks are OK:

You read the complete installation instructions, as
described in the installer reference guide.

The indoor unit is properly mounted.

The outdoor unit is properly mounted.

The following field wiring has been carried out according
to this document and the applicable legislation:

▪ Between the local supply panel and the outdoor unit

▪ Between indoor unit and outdoor unit

▪ Between the local supply panel and the indoor unit

▪ Between the indoor unit and the valves (if applicable)

▪ Between the indoor unit and the room thermostat (if

applicable)

There are NO missing phases or reversed phases.

The system is properly earthed and the earth terminals
are tightened.

The fuses or locally installed protection devices are
installed according to this document, and have not been
bypassed.

The power supply voltage matches the voltage on the
identification label of the unit.

There are NO loose connections or damaged electrical
components in the switchbox.

There are NO damaged components or squeezed

pipes on the inside of the indoor and outdoor units.

Backup heater circuit breaker F1B on the switchbox is

turned ON.

There are NO refrigerant leaks.

The refrigerant pipes (gas and liquid) are thermally
insulated.

The correct pipe size is installed and the pipes are
properly insulated.

There is NO water leak inside the indoor unit.

The shut-off valves are properly installed and fully open.

The stop valves (gas and liquid) on the outdoor unit are
fully open.

The air purge valve is open (at least 2 turns).

The pressure relief valve purges water when opened.

The minimum water volume is guaranteed in all
conditions. See "To check the water volume" in

"6.4Preparing water piping"on page18.

The safety thermostat is connected.

INFORMATION

The software is equipped with an "installer-on-site" mode
([4‑0E]), that disables automatic operation by the unit. At
first installation, setting [4‑0E] is by default set to "1",
meaning automatic operation is disabled. All protective
functions are then disabled. If the user interface home
pages are off, the unit will NOT operate automatically. To
enable automatic operation and the protective functions,
set [4‑0E] to "0".

36 hours after the first power-on, the unit will automatically
set [4‑0E] to "0", ending "installer-on-site" mode and
enabling the protective functions. If – after first
installation – the installer returns to the site, the installer
has to set [4‑0E] to "1" manually.

9.4 Checklist during commissioning

The minimum flow rate during backup heater/defrost
operation is guaranteed in all conditions. See "To check
the water volume and flow rate" in "6.4Preparing water

piping"on page18.

To perform an air purge.

To perform a test run.

To perform an actuator test run.

Underfloor screed dryout function

The underfloor screed dryout function is started (if
necessary).

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

63

9 Commissioning

9.4.1 To check the minimum flow rate

Recommended procedure for the additional zone

1 Confirm according to the hydraulic configuration which space

heating loops can be closed due to mechanical, electronic, or
other valves.

2 Close all space heating loops that can be closed (see previous

step).

3 Start the pump test run operation (see "9.4.4 To perform an

actuator test run"on page65).

4 Go to [6.1.8]: > Information > Sensor information > Flow rate

to check the flow rate. During pump test run operation, the unit
can operate below this minimum required flow rate that is
needed during defrost/backup heater operation.

Bypass valve foreseen?

Yes No

Modify the bypass valve setting
to reach the minimum required
flow rate + 2l/min

Recommended procedure for the main zone

5 Confirm according to the hydraulic configuration which space

heating loops can be closed due to mechanical, electronic, or
other valves.

6 Close all space heating loops that can be closed (see previous

step).

7 Create a thermo request on the main zone only.

8 Wait 1 minute until the unit is stabilized.

9 If the additional pump is still assisting (the green LED on the

right hand sided pump is ON), increase the flow until the
additional pump is NOT assisting anymore (LED is OFF).

10 Go to [6.1.8]: > Information > Sensor information > Flow rate

to check the flow rate.

Bypass valve foreseen?

Yes No

Modify the bypass valve setting
to reach the minimum required
flow rate + 2l/min

Minimum required flow rate during defrost/backup heater
operation

04+08 models 12l/min

16 model 15l/min

In case the actual flow rate is
below the minimum flow rate
(required during defrost/backup
heater operation), modifications
at hydraulic configuration are
required. Increase the space
heating loops that can NOT be
closed or install a pressure
controlled bypass valve.

In case the actual flow rate is
below the minimum flow rate
(required during defrost/backup
heater operation), modifications
at hydraulic configuration are
required. Increase the space
heating loops that can NOT be
closed or install a pressure
controlled bypass valve.

9.4.2 Air purge function

When commissioning and installing the unit, it is very important to
remove all air in the water circuit. When the air purge function is
running, the pumps operate without actual operation of the unit and
the removal of air in the water circuit will start.

NOTICE

Before starting the air purge, open the safety valve and
check if the circuit is sufficiently filled with water. Only if
water escapes the valve after opening it, you can start the
air purge procedure.

There are 2 modes for purging air:

▪ Manually: the unit will operate with a custom pump speed and in a

custom position of the 3-way valve (space heating/domestic hot
water). The custom position of the 3-way valve is a helpful feature
to remove all air from the water circuit in the space heating or the
domestic hot water heating mode. The operation speed of the
pump (slow or quick) can also be set.

▪ Automatic: the unit automatically changes the pump speed and

the position of the 3-way valve (space heating/domestic hot water)
between the space heating or the domestic hot water heating
mode.

INFORMATION

For both manual and automatic air purge, 1 temperature
zone is purged with each air purge start. To purge the
other temperature zone, you have to restart the air purge
function. When performing an air purge for the first time,
the main temperature zone will be purged.

Typical workflow

Purging the air from the system should consist of:

1 Performing a manual air purge for both zones

2 Performing an automatic air purge for both zones

INFORMATION

Start by performing a manual air purge on both zones.
When almost all the air is removed, perform an automatic
air purge on both zones. If necessary, repeat performing
the automatic air purge until you are sure that all air is
removed from the system. During air purge function, pump
speed limitation [9‑0D] is NOT applicable.

Make sure that the leaving water temperature home page, room
temperature home page, and domestic hot water home page are
turned OFF.

To perform a manual air purge

INFORMATION

When purging the main zone, make sure the setpoint for
the main zone is at least 5°C higher than the actual water
temperature inside the unit.

Prerequisite: Make sure that the leaving water temperature home
page, room temperature home page, and domestic hot water home
page are turned OFF.

1 Set the user permission level to Installer. See "To set the user

permission level to Installer"on page42.

2 Set the air purge mode: go to [A.7.3.1] > Installer settings >

Commissioning > Air purge > Type.

3 Select Manual and press .

4 Go to [A.7.3.4] > Installer settings > Commissioning > Air

purge > Start air purge and press to start the air purge
function.

Result: The manual air purge starts and the following screen
appears.

Installer reference guide

64

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

01:18

Tue

Air purge

l/min
Low
SHC

0.5

Flow rate
Speed
Circuit

Stop

Adjust

Scroll

01:18

Tue

Air purge

l/min
Low
SHC

0.5

Flow rate
Speed
Circuit

Stop

Adjust

Scroll

5 Use the and buttons to scroll to Speed.

6 Use the and buttons to set the desired pump speed.

Result: Low

Result: High

7 If applicable, set the desired position of the 3-way valve (space

heating/domestic hot water). Use the and buttons to scroll to
Circuit.

8 Use the and buttons to set the desired position of the 3-way

valve (space heating/domestic hot water).

Result: SHC

Result: Tank

To perform an automatic air purge

INFORMATION

When purging the main zone, make sure the setpoint for
the main zone is at least 5°C higher than the actual water
temperature inside the unit.

Prerequisite: Make sure that the leaving water temperature home
page, room temperature home page, and domestic hot water home
page are turned OFF.

1 Set the user permission level to Installer. See "To set the user

permission level to Installer"on page42.

2 Set the air purge mode: go to [A.7.3.1] > Installer settings >

Commissioning > Air purge > Type.

3 Select Automatic and press .

4 Go to [A.7.3.4] > Installer settings > Commissioning > Air

purge > Start air purge and press to start the air purge
function.

Result: Air purging will start and the following screen will be
shown.

The automatic air purge function stops automatically after
30minutes, then the installer has to restart the automatic air purge
function for the second temperature zone. This function will also stop
automatically after 30minutes

To interrupt air purge

1 Press and press to confirm the interruption of the air

purge function. When you restart the air purge function, the
other zone will be air purged.

9.4.3 To perform a test run

INFORMATION

The test run only applies to the additional temperature
zone.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

9 Commissioning

Prerequisite: Make sure that the leaving water temperature home

page, room temperature home page, and domestic hot water home
page are turned OFF.

1 Set the user permission level to Installer. See "To set the user

permission level to Installer"on page42.

2 Go to [A.7.1]: > Installer settings > Commissioning > Test

run.

3 Select a test and press . Example: Heating.

4 Select OK and press .

Result: The test run starts. It stops automatically when done

(±30min). To stop it manually, press , select OK and press .

INFORMATION

If 2 user interfaces are present, you can start a test run
from both user interfaces.

▪ The user interface used to start the test run displays a

status screen.

▪ The other user interface displays a "busy" screen. You

cannot use the user interface as long as the "busy"
screen is shown.

If the installation of the unit has been done correctly, the unit will
start up during test operation. During the test mode, the correct
operation of the unit can be checked by monitoring leaving water
temperature (heating mode) and tank temperature (domestic hot
water mode).

To monitor the temperature, go to [A.6] and select the information
you want to check.

9.4.4 To perform an actuator test run

Purpose of the actuator test run is to confirm the operation of the
different actuators (e.g., when you select pump operation, a test run
of the pump will start).

Prerequisite: Make sure that the leaving water temperature home
page, room temperature home page, and domestic hot water home
page are turned OFF.

1 Set the user permission level to Installer. See "To set the user

permission level to Installer"on page42.

2 Make sure the room temperature control, the leaving water

temperature control and the domestic hot water control are
turned OFF via the user interface.

3 Go to [A.7.4]: > Installer settings > Commissioning >

Actuator test run.

4 Select an actuator and press . Example: Pump.

5 Select OK and press .

Result: The actuator test run starts. It automatically stops when

finished. To stop it manually, press , select OK and press .

Possible actuator test runs

▪ Backup heater (step 1) test

▪ Pump test (only the pump of the additional temperature zone)

INFORMATION

Make sure that all air is purged before executing the test
run. Also avoid disturbances in the water circuit during the
test run.

▪ 2-way valve test

▪ 3-way valve test (3-way valve for switching between space

heating and tank heating)

▪ Bottom plate heater test

▪ Bivalent signal test

▪ Alarm output test

Installer reference guide

65

9 Commissioning

t

T

A1

25°C (1) 35°C (2)

24h (1) 36h (2)

▪ Heating signal test

▪ Quick heat-up test

▪ Circulation pump test

9.4.5 Underfloor heating screed dryout

This function is used for drying out the screed of an underfloor
heating system very slowly during the construction of a house. It
allows the installer to program and execute this program.

Make sure that the leaving water temperature home page, room
temperature home page, and domestic hot water home page are
turned OFF.

This function can be executed without finishing the outdoor
installation. In this case, the backup heater will perform the screed
dryout and supply the leaving water without heat pump operation.

When no outdoor unit is installed yet, then connect the main power
supply cable to the indoor unit via X2M/30 and X2M/31. See

"7.9.9To connect the main power supply"on page37.

INFORMATION

NOTICE

The installer is responsible for:

NOTICE

To perform an underfloor heating screed dryout, room frost
protection needs to be disabled ([2‑06]=0). By default, it is
enabled ([2‑06]=1). However, due to the "installer-on-site"
mode (see "Checklist before commissioning"), room frost
protection will be automatically disabled for 36 hours after
the first power-on.

If the screed dryout still needs to be performed after the
first 36 hours of power-on, manually disable room frost
protection by setting [2‑06] to "0", and KEEP it disabled
until the screed dryout has finished. Ignoring this notice will
result in cracking of the screed.

NOTICE

For the underfloor heating screed dryout to be able to start,
make sure the following settings are met:

The installer can program up to 20 steps. For each step he needs to
enter:

▪ If Emergency is set to Manual ([A.6.C]=0), and the unit

is triggered to start emergency operation, the user
interface will ask confirmation before starting. The
underfloor heating screed dryout function is active even
if the user does NOT confirm emergency operation.

▪ During underfloor heating screed dryout, pump speed

limitation [9‑0D] is NOT applicable.

▪ contacting the screed manufacturer for the initial

heating instructions to avoid cracking the screed,

▪ programming the underfloor heating screed dryout

schedule according to the above instruction of the
screed manufacturer,

▪ checking the proper functioning of the setup on a

regular basis,

▪ selecting the correct program complying with the type

of the used screed of the floor.

▪ [4‑00]=1

▪ [C‑02]=0

▪ [D‑01]=0

▪ [4‑08]=0

▪ [4‑01]≠1

1 the duration in hours, up to 72hours,

2 the desired leaving water temperature.

Example:

T Desired leaving water temperature (15~55°C)

t Duration (1~72h)
(1) Action step 1
(2) Action step 2

To program an underfloor heating screed dryout schedule

1 Set the user permission level to Installer. See "To set the user

permission level to Installer"on page42.

2 Go to [A.7.2]:

screed dryout > Set dryout schedule.

3 Use the

▪ Use
▪ Use

If a time is selected, you can set the duration between 1 and
72hours.
If a temperature is selected, you can set the desired leaving
water temperature between 15°C and 55°C.

4 To add a new step, select "–h" or "–" on an empty line and

press

5 To delete a step, set the duration to "–" by pressing

6 Press

.

to save the schedule.

It is important that there is no empty step in the program.
The schedule will stop when a blank step is programmed
OR when 20 consecutive steps have been executed.

> Installer settings > Commissioning > UFH

, , , and to program the schedule.

and to scroll through the schedule.
and to adjust the selection.

.

To perform an underfloor heating screed dryout

INFORMATION

Preferential kWh rate power supply cannot be used in
combination with underfloor heating screed dryout.

Prerequisite: Make sure there is ONLY 1 user interface connected
to your system to perform an underfloor heating screed dryout.

Prerequisite: Make sure that the leaving water temperature home
page, room temperature home page, and domestic hot water home
page are turned OFF.

1 Go to [A.7.2]:

screed dryout.

2 Set a dryout program.

3 Select Start dryout and press

4 Select OK and press

Result: The underfloor heating screed dryout starts and following

screen will be shown. It stops automatically when done. To stop it
manually, press

> Installer settings > Commissioning > UFH

.

.

, select OK and press .

Installer reference guide

66

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

15:10

1
14d 12h
25°C

Tue

Screed dryout

Current step

Remaining
Desired LWT

Stop

To readout the status of an underfloor heating screed dryout

1 Press .

2 The current step of the program, the total remaining time, and

the current desired leaving water temperature will be displayed.

To interrupt an underfloor heating screed dryout

When the program is stopped by an error, an operation switch off, or
a power failure, the U3 error will be displayed on the user interface.
To resolve the error codes, see "12.4 Solving problems based on

error codes" on page 71. To reset the U3 error, your User

permission level needs to be Installer.

1 Go to the underfloor heating screed dryout screen.

2 Press .

3 Press to interrupt the program.

4 Select OK and press .

Result: The underfloor heating screed dryout program is stopped.

When the program is stopped due to an error, an operation switch­off, or a power failure, you can read out the underfloor heating
screed dryout status.

5 Go to [A.7.2]: > Installer settings > Commissioning > UFH

screed dryout > Dryout status > Stopped at and followed by the
last executed step.

6 Modify and restart the execution of the program.

10 Hand-over to the user

Once the test run is finished and the unit operates properly, please
make sure the following is clear for the user:

▪ Fill in the installer setting table (in the operation manual) with the

actual settings.

▪ Make sure that the user has the printed documentation and ask

him/her to keep it for future reference. Inform the user that he can
find the complete documentation on the url as earlier described in
this manual.

▪ Explain the user how to properly operate the system and what to

do in case of problems.

▪ Show the user what to do in relation to maintaining the unit.

▪ Explain the user about energy saving tips as described in the

operation manual.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

INFORMATION

There is limited access to the menu structure. Only the
following menus can be accessed:

▪ Information.

▪ Installer settings > Commissioning > UFH screed

dryout.

10 Hand-over to the user

11 Maintenance and service

NOTICE

Maintenance must be done by an authorised installer or

service agent.

We recommend to do maintenance at least once a year.

However, applicable legislation might require shorter

maintenance intervals.

NOTICE

In Europe, the greenhouse gas emissions of the total

refrigerant charge in the system (expressed as tonnes

CO2-equivalent) is used to determine the maintenance

intervals. Follow the applicable legislation.

Formula to calculate the greenhouse gas emissions:

GWP value of the refrigerant × Total refrigerant charge [in

kg] / 1000

11.1 Overview: Maintenance and service

This chapter contains information about:

▪ The yearly maintenance of the outdoor unit

▪ The yearly maintenance of the indoor unit

11.2 Maintenance safety precautions

DANGER: RISK OF ELECTROCUTION

DANGER: RISK OF BURNING

NOTICE:Risk of electrostatic discharge

Before performing any maintenance or service work, touch
a metal part of the unit in order to eliminate static electricity
and to protect the PCB.

11.2.1 Opening the indoor unit

CAUTION

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

You just need to remove the front panel of the unit to gain access to
most parts which need maintenance. In rare cases, you may also
need to remove the switch box.

11.3 Checklist for yearly maintenance of the outdoor unit

Check the following at least once a year:

▪ Outdoor unit heat exchanger.

The heat exchanger of the outdoor unit can get blocked up due to
dust, dirt, leaves, etc. It is recommended to clean the heat
exchanger yearly. A blocked heat exchanger can lead to too low
pressure or too high pressure leading to worse performance.

11.4 Checklist for yearly maintenance of the indoor unit

Check the following at least once a year:

▪ Water pressure

▪ Water filters

Installer reference guide

67

11 Maintenance and service

1 3

2

5

4

2

×

▪ Water pressure relief valve

▪ Relief valve hose

▪ Pressure relief valve of the domestic hot water tank

▪ Switch box

▪ Descaling

▪ Chemical disinfection

▪ Anode

Water pressure

Check whether the water pressure is above 1bar. If it is lower, add
water.

Water filters

Clean the water filters.

NOTICE

Handle the water filters with care. Do NOT use excessive
force when you reinsert the water filters so as NOT to
damage the water filters mesh.

Water pressure relief valve

Open the valve and check if it operates correctly. The water may be
very hot!

Checkpoints are:

▪ The water flow coming from the relief valve is high enough, no

blockage of the valve or in between piping is suspected.

▪ Dirty water coming out of the relief valve:

▪ open the valve until the discharged water does NOT contain dirt

anymore

▪ flush the system and install an additional water filter (a

magnetic cyclone filter is preferable).

To make sure this water originates from the tank, check after a tank
heat up cycle.

It is recommended to do this maintenance more frequently.

Pressure relief valve hose

Check whether the pressure relief valve hose is positioned
appropriately to drain the water. See "7.8.5To connect the pressure

relief valve to the drain"on page32.

Relief valve of the domestic hot water tank (field supply)

Open the valve and check the correct operation. Water may be very
hot!

Checkpoints are:

▪ The water flow coming from the relief valve is high enough, no

blockage of the valve or in between piping is suspected.

▪ Dirty water coming out of the relief valve:

▪ open the valve until the discharged water does not contain dirt

anymore

▪ flush and clean the complete tank, including the piping between

the relief valve and cold water inlet.

To make sure this water originates from the tank, check after a tank
heat up cycle.

It is recommended to do this maintenance more frequently.

Switch box

▪ Carry out a thorough visual inspection of the switchbox and look

for obvious defects such as loose connections or defective wiring.

▪ Using an ohmmeter, check if contactors K1M, K2M and K3M

operate correctly. All contacts of these contactors must be in open
position when the power is turned OFF.

WARNING

If the internal wiring is damaged, it has to be replaced by
the manufacturer, its service agent or similarly qualified
persons.

Descaling

Depending on water quality and set temperature, scale can deposit
on the heat exchanger inside the domestic hot water tank and can
restrict heat transfer. For this reason, descaling of the heat
exchanger may be required at certain intervals.

Chemical disinfection

If the applicable legislation requires a chemical disinfection in
specific situations, involving the domestic hot water tank, please be
aware that the domestic hot water tank is a stainless steel cylinder
containing an aluminium anode. We recommend to use a non­chloride based disinfectant approved for use with water intended for
human consumption.

NOTICE

When using means for descaling or chemical disinfection,
it must be ensured that the water quality remains compliant
with EU directive 98/83EC.

Anode

No maintenance or replacement required.

11.4.1 To drain the domestic hot water tank

Prerequisite: Switch OFF the power supply.

Prerequisite: Turn OFF the cold water supply.

1 Open the front panel.

2 Remove the 2 screws, unhook and put the switch box aside.

3 The drain hose is located at the right side of the unit. Cut the tie

wraps or tape and bring the flexible drain hose forward.

Installer reference guide

68

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

a

a Drain hose

INFORMATION

To drain the tank, all the hot water tapping points need to
be opened to allow air to enter the system.

4 Open the drain valve.

12 Troubleshooting

12.1 Overview: Troubleshooting

This chapter describes what you have to do in case of problems.

It contains information about:

▪ Solving problems based on symptoms

▪ Solving problems based on error codes

Before troubleshooting

Carry out a thorough visual inspection of the unit and look for
obvious defects such as loose connections or defective wiring.

12.2 Precautions when troubleshooting

WARNING

▪ When carrying out an inspection on the switch box of

the unit, always make sure that the unit is disconnected
from the mains. Turn off the respective circuit breaker.

▪ When a safety device was activated, stop the unit and

find out why the safety device was activated before
resetting it. NEVER bridge safety devices or change
their values to a value other than the factory default
setting. If you are unable to find the cause of the
problem, call your dealer.

DANGER: RISK OF ELECTROCUTION

WARNING

Prevent hazard due to the inadvertent resetting of the
thermal cut-out: this appliance must NOT be supplied
through an external switching device, such as a timer, or
connected to a circuit that is regularly turned ON and OFF
by the utility.

DANGER: RISK OF BURNING

12 Troubleshooting

12.3 Solving problems based on symptoms

12.3.1 Symptom: The unit is NOT heating as expected

Possible causes Corrective action

The temperature setting is NOT
correct

The water flow is too low Check and make sure that:

The water volume in the
installation is too low

12.3.2 Symptom: The compressor does NOT start (space heating or domestic water heating)

Possible causes Corrective action

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

Check the temperature setting on
the remote controller. Refer to
the operation manual.

▪ All shut-off valves of the water

circuit are completely open.

▪ The water filters are clean.

Clean if necessary.

▪ There is no air in the system.

Purge air if necessary. You
can purge air manually (see

"To perform a manual air
purge"on page64) or use the

automatic air purge function
(see "To perform an automatic

air purge"on page65).

▪ The water pressure is >1 bar.

▪ The expansion vessel is NOT

broken.

▪ The resistance in the water

circuit is NOT too high for the
pump (see the ESP curve in
the "Technical data" chapter).

If the problem persists after you
have conducted all of the above
checks, contact your dealer. In
some cases, it is normal that the
unit decides to use a low water
flow.

Make sure that the water volume
in the installation is above the
minimum required value (see

"6.4.3To check the water volume
and flow rate"on page19).

If the water temperature is too
low, the unit uses the backup
heater to reach the minimum
water temperature first (15°C).

Check and make sure that:

▪ The power supply to the

backup heater is correctly
wired.

▪ The backup heater thermal

protector is NOT activated.

▪ The backup heater contactor is

NOT broken.

If the problem persists after you
have conducted all of the above
checks, contact your dealer.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

69

12 Troubleshooting

Possible causes Corrective action

The preferential kWh rate power
supply settings and electrical
connections do NOT match

The preferential kWh rate signal
was sent by the electricity
company

This should match with the
connections as explained in

"6.5Preparing electrical
wiring"on page21 and "7.9.9To
connect the main power
supply"on page37.

Wait for the power to return (2
hours max.).

12.3.3 Symptom: The pump is making noise (cavitation)

Possible causes Corrective action

There is air in the system Purge air manually on both

zones (see "To perform a manual

air purge"on page64) or use the

automatic air purge function on
both zones (see "To perform an

automatic air purge"on page65).

The water pressure at the pump
inlet is too low

Check and make sure that:

▪ The water pressure is >1bar.

▪ The manometer is not broken.

▪ The expansion vessel is NOT

broken.

▪ The pre-pressure setting of the

expansion vessel is correct
(see "6.4.4 Changing the pre-

pressure of the expansion
vessel"on page20).

12.3.4 Symptom: The pressure relief valve opens

Possible causes Corrective action

The expansion vessel is broken Replace the expansion vessel.

The water volume in the
installation is too high

The water circuit head is too high The water circuit head is the

Make sure that the water volume
in the installation is below the
maximum allowed value (see

"6.4.3To check the water volume
and flow rate"on page19 and
"6.4.4Changing the pre-pressure
of the expansion vessel"on
page20).

difference in height between the
indoor unit and the highest point
of the water circuit. If the indoor
unit is located at the highest
point of the installation, the
installation height is considered
0m. The maximum water circuit
head is 10m.

Check the installation
requirements.

12.3.5 Symptom: The water pressure relief valve leaks

Possible causes Corrective action

Dirt is blocking the water
pressure relief valve outlet

Check whether the pressure
relief valve works correctly by
turning the red knob on the valve
counterclockwise:

▪ If you do NOT hear a clacking

sound, contact your dealer.

▪ If the water keeps running out

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

12.3.6 Symptom: The space is NOT sufficiently heated at low outdoor temperatures

Possible causes Corrective action

The backup heater operation is
not activated

The backup heater equilibrium
temperature has not been
configured correctly

There is air in the system. Purge air manually or

Check and make sure that:

▪ The backup heater operation

mode is enabled. Go to:

▪ [A.5.1.1] > Installer settings

> Heat sources > Backup
heater > Operation mode
[4‑00]

▪ The backup heater overcurrent

fuse has not been turned off. If
it has, check the fuse and turn
it back on.

▪ The thermal protector of the

backup heater has not been
activated. If it has, check the
following, and then press the
reset button in the switch box:

▪ The water pressure

▪ Whether there is air in the

system

▪ The air purge operation

Increase the "equilibrium
temperature" to activate the
backup heater operation at a
higher outdoor temperature. Go
to:

▪ [A.5.1.4] > Installer settings >

Heat sources > Backup heater
> Equilibrium temp. OR

▪ [A.8] > Installer settings >

Overview settings [5‑01]

automatically. See the air purge
function in the "Commissioning"
chapter.

Installer reference guide

70

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

12 Troubleshooting

Possible causes Corrective action

Too much heat pump capacity is
used for heating domestic hot
water

Check and make sure that the
"space heating priority" settings
have been configured
appropriately:

▪ Make sure that the "space

heating priority status" has
been enabled. Go to [A.8] >
Installer settings > Overview
settings [5‑02]

▪ Increase the "space heating

priority temperature" to
activate backup heater
operation at a higher outdoor
temperature. Go to [A.8] >
Installer settings > Overview
settings [5‑03]

12.3.7 Symptom: The pressure at the tapping point is temporarily unusually high

Possible causes Corrective action

Failing or blocked pressure relief
valve.

▪ Flush and clean the complete

tank including the piping
between pressure relief valve
and the cold water inlet.

▪ Replace the pressure relief

valve.

12.3.8 Symptom: Decoration panels are pushed away due to a swollen tank

Possible causes Corrective action

Failing or blocked pressure relief
valve.

Contact your local dealer.

12.3.9 Symptom: Tank disinfection function is NOT completed correctly (AH-error)

Possible causes Corrective action

The disinfection function was
interrupted by domestic hot water
tapping

Large domestic hot water tapping
happened recently before the
programmed start-up of the
disinfection function

Program the start-up of the
disinfection function when the
coming 4hours NO domestic hot
water tapping is expected.

When the Domestic hot water >
Type > Reheat or Reheat +
sched. is selected, it is
recommended to program the
start-up the disinfection function
at least 4hours later than the last
expected large hot water tapping.
This start-up can be set by
installer settings (disinfection
function).

When the Domestic hot water >
Type > Scheduled only is
selected, it is recommended to
program a Storage eco 3hours
before the scheduled start-up of
the disinfection function to
preheat the tank.

Possible causes Corrective action

The disinfection operation was
stopped manually: with the user
interface displaying the DHW
home page and its user
permission level set to Installer,
the button was pressed
during disinfection operation.

Do NOT press the button
while the disinfection function is
active.

12.4 Solving problems based on error codes

When a problem happens, an error code appears on the user
interface. It is important to understand the problem and to take
countermeasure before resetting the error code. This should be
done by a licensed installer or by your local dealer.

This chapter gives you an overview of all error codes and the
content of the error code as it appears on the user interface.

For a more detailed troubleshooting guideline for each error, please
see the service manual.

12.4.1 Error codes: Overview

Error codes of the indoor unit

Error code Detailed error

code

7H 01 Water flow problem.

7H 04 Water flow problem during

7H 05 Water flow problem during

7H 06 Water flow problem during

80 00 Returning water temperature

81 01 Mixed water thermistor

81 00 Leaving water temperature

89 01 Heat exchanger frozen.

Description

Auto restart.

domestic hot water production.

Manual reset.

Check the domestic hot water
circuit.

heating/sampling.

Manual reset.

Check the space heating circuit.

defrost.

Manual reset.

Check the plate heat exchanger.

sensor problem.

Please contact your dealer.

abnormality.

Auto reset.

sensor problem.

Please contact your dealer.

1

(1)

On the home screen of your user inter interface, the following information will be displayed:

Bi-zone kit abnormality

detection

Refer to bi-zone kit manual

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

71

12 Troubleshooting

Error code Detailed error

Description

code

89 02 Heat exchanger frozen.

89 03 Heat exchanger frozen.

8F 00 Abnormal increase outlet

water temperature (DHW).

8H 00 Abnormal increase outlet

water temperature.

8H 01 Overheating mixed water circuit.

Auto reset.

1

8H 02 Overheating mixed water circuit

(thermostat).

Auto reset.

1

8H 03 Overheating water circuit

(thermostat).

A1 00 Zero cross detection problem.

Power reset required.

Please contact your dealer.

A1 01 EEPROM reading error.

Error code Detailed error

Description

code

H1 00 External temperature

sensor problem.

Please contact your dealer.

HC 00 Tank temperature sensor

problem.

Please contact your dealer.

U3 00 Under floor heating screed

dryout function not completed

correctly.

U4 00 Indoor/outdoor unit

communication problem.

U5 00 User interface

communication problem.

U8 01 Connection with adapter lost

Please contact your dealer.

UA 00 Indoor unit, outdoor unit

matching problem.

Power reset required.

UA 16 Extension/hydro

communication problem.

AA 01 Backup heater overheated.

Power reset required.

Please contact your dealer.

AH 00 Tank disinfection function not

completed correctly.

AJ 03 Too long DHW heat-up time

required.

C0 00 Flow sensor malfunction.

Manual reset.

C4 00 Heat exchanger temperature

sensor problem.

Please contact your dealer.

CJ 02 Room temperature sensor

problem.

Please contact your dealer.

EC 00 Abnormal increase tank

temperature.

UA 17 Tank type problem

UA 21 Extension/hydro

mismatch problem.

INFORMATION

In case of error code AH and no interruption of the
disinfection function occurred due to domestic hot water
tapping, following actions are recommended:

▪ When the Domestic hot water > Type > Reheat or

Reheat + sched. is selected, it is recommended to
program the start-up of the disinfection function at least
4 hours later than the last expected large hot water
tapping. This start-up can be set by installer settings
(disinfection function).

▪ When the Domestic hot water > Type > Scheduled only

is selected, it is recommended to program a Storage
eco 3 hours before the scheduled start-up of the
disinfection function to preheat the tank.

(1)

On the home screen of your user inter interface, the following information will be displayed:

Bi-zone kit abnormality

detection

Refer to bi-zone kit manual

Installer reference guide

72

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

13 Disposal

NOTICE

When the minimum water flow is lower than described in
the table below, the unit will temporarily stop operation and
the user interface will display error 7H‑01. After some time,
this error will reset automatically and the unit will resume
operation.

Minimum required flow during heat pump operation

04 models 6l/min

08 models 6l/min

16 models 10l/min

Minimum required flow during defrost operation

04+08 models 12l/min

16 models 15l/min

Minimum required flow during backup heater operation

All models 12l/min

If the 7H-01 error persists, the unit will stop operation and the user
interface will display an error code that needs to be reset manually.
Depending on the problem, this error code is different:

Error code Detailed error

code

7H 04 The water flow problems mainly

7H 05 The water flow problems mainly

7H 06 The water flow problems mainly

INFORMATION

Error AJ-03 is reset automatically from the moment there is
a normal tank heat-up.

INFORMATION

If the unit detects flow when the pump is not running, an
external device might be causing flow, or there might be
something wrong with the flow measuring devices (flow
sensor).

▪ If the flow sensor detects flow when the pump is not

running, the unit will stop operation and the user
interface will display error C0‑00. For the unit to resume
operation, this error needs to be reset manually.

Description

occurred during domestic hot
water operation. Check the
domestic hot water circuit.

occurred during space heating
operation. Check the space
heating circuit.

occurred during defrost
operation. Check the space
heating circuit.

Additionally, this error code might
be an indication of frost damage
to the plate heat exchanger. In
that case, contact your local
dealer.

13 Disposal

NOTICE

Do not try to dismantle the system yourself: the dismantling
of the system, treatment of the refrigerant, oil and other
parts must comply with applicable legislation. Units must
be treated at a specialised treatment facility for reuse,
recycling and recovery.

13.1 Overview: Disposal

Typical workflow

Disposing of the system typically consists of the following stages:

1 Pumping down the system.

2 Bringing the system to a specialized treatment facility.

INFORMATION

For more details, see the service manual.

13.2 About pump down

The unit is equipped with an automatic pump down function, with
which you can collect all refrigerant from the system into the outdoor
unit.

NOTICE

The outdoor unit is equipped with a low pressure switch or
a low pressure sensor to protect the compressor by turning
it OFF. NEVER short-circuit the low pressure switch during
pump down operation.

Before pumping down

NOTICE

Before you pump down, make sure the water temperature
(example: by performing a heating operation) and water
volume (example: by opening all heat emitters) are
sufficiently high. Pump down is done in cooling mode.

13.3 To pump down

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.

1 Turn ON the main power supply switch.

2 Make sure the liquid stop valve and the gas stop valve are

open.

3 Press the pump down button (BS4) for at least 8 seconds. BS4

is located on the PCB in the outdoor unit (see wiring diagram).

Result: The compressor and outdoor unit fan start
automatically.

4 Once operation stops (after 3~5 minutes), close the liquid stop

valve and the gas stop valve.

Result: The pump down operation is finished. The user
interface may display " " and the indoor pump may continue
operating. This is NOT a malfunction. Even if you press the ON
button on the user interface, the unit will NOT start. To restart
the unit, turn OFF the main power supply switch and turn it ON
again.

5 Turn OFF the main power supply switch.

NOTICE

Make sure to reopen both stop valves before restarting the
unit.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

73

14 Technical data

R2T

R4T

R6T

R1T

e

d

g

f

a

c

c

b

e

Y1E

Y1S

M1F-M2F

M1C

E1HC

S1NPH

S1PH

R5T

R3T

3TW57765-1A

R2T

R3T

R6T

e

d

g

f

h

a

c

c

b

e

Y1E

Y3S

Y1S

M1F-M2F

M1C

E1HC

S1NPH

S1PH

R1T

R4T

R5T

3TW57915-1A

R2T

R3T

R6T

e

d

g

f

a

c

c

b

e

Y1E

Y3S

Y3E

Y1S

M1F-M2F

M1C

E1HC

S1NPH

S1PH

h

R1T

R4T

R5T

3TW60335-1A

e

14 Technical 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).

14.1 Piping diagram: Outdoor unit

ERHQ_V3

a Field piping (liquid: Ø9.5 flare connection)
b Field piping (gas: Ø15.9 flare connection)
c Stop valve (with service port 5/16")
d Accumulator
e Filter

f Heat exchanger

g Internal service port 5/16"

E1HC Crankcase heater

M1C Motor (compressor)

M1F‑M2F Motor (upper and lower fan)

R1T Thermistor (air)
R2T Thermistor (discharge)
R3T Thermistor (suction)
R4T Thermistor (heat exchanger)
R5T Thermistor (heat exchanger middle)
R6T Thermistor (liquid)

S1NPH Pressure sensor

S1PH High pressure switch

Y1E Electronic expansion valve
Y1S Solenoid valve (4‑way valve)

Heating
Cooling

ERHQ_W1

a Field piping (liquid: Ø9.5 flare connection)
b Field piping (gas: Ø15.9 flare connection)
c Stop valve (with service port 5/16")
d Accumulator
e Filter

f Heat exchanger
g Internal service port 5/16"
h Capillary tube

E1HC Crankcase heater

M1C Motor (compressor)

M1F‑M2F Motor (upper and lower fan)

R1T Thermistor (air)
R2T Thermistor (discharge)
R3T Thermistor (suction)
R4T Thermistor (heat exchanger)
R5T Thermistor (heat exchanger middle)
R6T Thermistor (liquid)

S1NPH Pressure sensor

S1PH High pressure switch

Y1E Electronic expansion valve
Y1S Solenoid valve (4‑way valve)
Y3S Solenoid valve (injection)

Heating
Cooling

ERLQ

a Field piping (liquid: Ø9.5 flare connection)
b Field piping (gas: Ø15.9 flare connection)
c Stop valve (with service port 5/16")
d Accumulator
e Filter

f Heat exchanger
g Internal service port 5/16"
h Capillary tube

E1HC Crankcase heater

M1C Motor (compressor)

Installer reference guide

74

M1F‑M2F Motor (upper and lower fan)

R1T Thermistor (air)
R2T Thermistor (discharge)
R3T Thermistor (suction)
R4T Thermistor (heat exchanger)
R5T Thermistor (heat exchanger middle)
R6T Thermistor (liquid)

S1NPH Pressure sensor

S1PH High pressure switch

Y1E Electronic expansion valve (main)
Y3E Electronic expansion valve (injection)
Y1S Solenoid valve (4‑way valve)
Y3S Solenoid valve (hot gas pass)

Heating
Cooling

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

14.2 Piping diagram: Indoor unit

Field installed

M

M

3D096028-1A

R1T

R4T

R3T

R2T

R5T

R7T

A

A

1

7

7

26

12

14

18

9

21

2

5

6

4

3

13

27

16

19

20

17

10

28

22

23

8

8

29

15

11

24

28

Refrigerant inlet

Refrigerant outlet

Refrigerant side

Water side

Field installed

14 Technical data

1 Space heating – water OUT (additional/direct zone)
2 Space heating – water IN (additional/direct zone)
3 Space heating – water OUT (main/mixed zone)
4 Space heating – water IN (main/mixed zone)
5 Domestic hot water: hot water out
6 Domestic hot water: cold water in
7 Shut-off valve with drain/fill valve
8 Shut-off valve

9 Flow sensor
10 3-way valve (space heating/domestic hot water)
11 3-way valve (mixing valve for the main/mixed zone)
12 Water filter (additional/direct zone)
13 Water filter (main/mixed zone)
14 Pump (additional/direct zone)
15 Pump (main/mixed zone)
16 Backup heater
17 Safety valve
18 Plate heat exchanger
19 R1T – Outlet water heat exchanger thermistor
20 R2T – Outlet water backup heater thermistor
21 R3T – Thermistor (heat exchanger, liquid pipe)
22 R4T – Inlet water thermistor
23 R5T – Tank thermistor
24 R7T – Water outlet thermistor (main/mixed zone)
26 Expansion vessel
27 Air purge
28 Check valve
29 Capillary tube

Screw connection
Flare connection

Quick coupling

Brazed connection

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

75

14 Technical data

14.3 Wiring diagram: Outdoor unit

The wiring diagram is delivered with the unit, located at the inside of
the service cover.

Notes:

1 This wiring diagram applies only to the outdoor unit.

2 Symbols (see below).

3 Symbols (see below).

4 Refer to the option manual for connecting wiring to X6A and

X77A.

5 Refer to the wiring diagram sticker (on the back of the service

cover) for how to use the BS1~BS4 and DS1 switches.

6 When operating, do not short-circuit protective device S1PH.

7 Colours (see below).

8 Refer to the service manual for instructions on how to set the

selector switches (DS1). The factory setting of all switches is
OFF.

9 Symbols (see below).

Symbols:

L Live

N Neutral

Field wiring

Terminal strip

Connector

Connector

Connection

Protective earth (screw)

Noiseless earth

Terminal

Option

Wiring dependent on model

Colours:

BLK Black

BLU Blue

BRN Brown

GRN Green

ORG Orange

RED Red

WHT White

YLW Yellow

Legend:

A1P~A4P Printed circuit board

BS1~BS4 Push button switch

C1~C4 Capacitor

DS1 DIP switch

E1H Bottom plate heater

E1HC Crankcase heater

F1U~F8U

(ERHQ_V3 + ERLQ_V3)

▪ F1U, F3U, F4U: Fuse (T 6.3 A /

250V)

▪ F6U: Fuse (T 5.0A / 250V)

▪ F7U, F8U: Fuse (F 1.0A / 250V)

F1U~F9U

(ERHQ_W1 + ERLQ_W1)

H1P~H7P (A2P)

(ERHQ_V3 + ERLQ_V3)

H1P~H7P (A1P)

(ERHQ_W1 + ERLQ_W1)

HAP (A1P)

(ERHQ_V3 + ERLQ_V3)

HAP (A1P, A2P)

(ERHQ_W1 + ERLQ_W1)

K1M, K2M

(ERHQ_W1 + ERLQ_W1)

K1R~K4R Magnetic relay

K10R, K11R

(ERHQ_V3 + ERLQ_V3)

L1R~L4R Reactor

M1C Motor (compressor)

M1F Motor (upper fan)

M2F Motor (lower fan)

PS Switching power supply

Q1DI Earth leakage circuit breaker (field

R1~R4 Resistor

R1T Thermistor (air)

R2T Thermistor (discharge)

R3T Thermistor (suction)

R4T Thermistor (heat exchanger)

R5T Thermistor (heat exchanger middle)

R6T Thermistor (liquid)

R7T

(ERHQ_W1 + ERLQ_W1)

R10T

(ERHQ_V3 + ERLQ_V3)

RC

(ERHQ_V3 + ERLQ_V3)

S1NPH Pressure sensor

S1PH High pressure switch

TC

(ERHQ_V3 + ERLQ_V3)

V1R

(ERHQ_V3 + ERLQ_V3)

V1R, V2R

(ERHQ_W1 + ERLQ_W1)

V2R, V3R

(ERHQ_V3 + ERLQ_V3)

V3R

(ERHQ_W1 + ERLQ_W1)

▪ F1U, F2U: Fuse (31.5A / 500V)

▪ F3U~F6U: Fuse (T 6.3A / 250V)

▪ F7U: Fuse (T 5.0A / 250V)

▪ F8U, F9U: Fuse (F 1.0A / 250V)

Light‑emitting diode (service monitor
orange)

H2P:

▪ Prepare, test: Flickering

▪ Malfunction detection: Light up

Light‑emitting diode (service monitor
orange)

Light‑emitting diode (service monitor
green)

Light‑emitting diode (service monitor
green)

Magnetic contactor

Magnetic relay

supply)

Thermistor (fin)

Thermistor (fin)

Signal receiver circuit

Signal transmission circuit

Power module

Power module

Diode module

Diode module

Installer reference guide

76

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

14 Technical data

15

**

/12.2

1

V1T

(ERHQ_V3 + ERLQ_V3)

X1M Terminal strip (power supply)

X1Y Connector (option for ERHQ: bottom

X6A Connector (option)

X77A

(ERHQ_W1 + ERLQ_W1)

Y1E Expansion valve (main)

Insulated gate bipolar transistor (IGBT)

plate heater)

Connector (option)

Y3E

(ERLQ)

Y1S Solenoid valve (4‑way valve)

Y3S

(ERHQ_W1)

Y3S

(ERLQ)

Z1C~Z9C Noise filter

Z1F~Z4F Noise filter

Expansion valve (injection)

Solenoid valve (injection)

Solenoid valve (hot gas pass)

14.4 Wiring diagram: Indoor unit

See the internal wiring diagram supplied with the unit (on the inside of the indoor unit switch box cover). The abbreviations used are listed
below.

Notes to go through before starting the unit

English Translation

Notes to go through before
starting the unit

X1M Main terminal

X2M Field wiring terminal for AC

X5M Field wiring terminal for DC

User installed options User installed options

Domestic hot water tank Domestic hot water tank

Remote user interface Remote user interface

Ext. indoor thermistor External indoor thermistor

Ext outdoor thermistor External outdoor thermistor

Digital I/O PCB Digital I/O PCB

Demand PCB Demand PCB

Bottom plate heater Bottom plate heater

Main LWT Main leaving water temperature

On/OFF thermostat (wired) On/OFF thermostat (wired)

On/OFF thermostat (wireless) On/OFF thermostat (wireless)

Ext. thermistor External thermistor

Heat pump convector Heat pump convector

Safety thermostat Safety thermostat

Add LWT Additional leaving water

On/OFF thermostat (wired) On/OFF thermostat (wired)

On/OFF thermostat (wireless) On/OFF thermostat (wireless)

Ext. thermistor External thermistor

Heat pump convector Heat pump convector

Position in switch box

English Translation

Position in switch box Position in switch box

Notes to go through before
starting the unit

Earth wiring

Wire number 15

Field supply

Connection ** continues on page
12 column 2

Several wiring possibilities

Option

Not mounted in switch box

Wiring depending on model

PCB

temperature

Legend

A1P Main PCB

A2P User interface PCB

A3P * On/OFF thermostat (PC=power circuit)

A3P * Heat pump convector

A4P * Digital I/O PCB

A4P * Receiver PCB (Wireless On/OFF

thermostat)

A5P Bizone PCB

A6P Current loop PCB

A7P Anode driver PCB

A8P * Demand PCB

B1L Flow sensor

DS1 (A5P) DIP switch

DS1 (A8P) DIP switch

E1A Electrical anode

E3H Backup heater element (3kW)

F1B Overcurrent fuse backup heater

F1T Thermal fuse backup heater

F1U (A4P) * Fuse 5A 250V for digital I/O PCB

F2U (A4P) * Fuse 5A 250V for digital I/O PCB

F1U (A5P) Fuse T 2A 250V for PCB

F2U (A5P) Fuse T 2A 250V for PCB

FU1 (A1P) Fuse T 6.3A 250V for PCB

K1M Contactor backup heater

K2M Relay 3-way valve bypass

K3M Relay 3-way valve flow

K*R (A1P, A4P) Relay on PCB

M1P Additional zone pump

M2P # Domestic hot water pump

M3P Main zone pump

M1S Mixing 3-way valve

M2S # 2-way valve for cooling mode

M3S 3-way valve for space heating/domestic hot

water

PC (A4P) Power circuit

PHC1 (A4P) * Optocoupler input circuit

Q*DI # Earth leakage circuit breaker

Q1L Thermal protector backup heater

Q3L # Safety thermostat

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

77

14 Technical data

R1H (A3P) * Humidity sensor

R1T (A1P) Outlet water heat exchanger thermistor

R1T (A2P) Ambient sensor user interface

R1T (A3P) * Ambient sensor On/OFF thermostat

R2T (A1P) Outlet backup heater thermistor

R2T (A3P) * External sensor (floor or ambient)

R3T Refrigerant liquid side thermistor

R4T Inlet water thermistor

R5T Domestic hot water thermistor

R6T * External indoor or outdoor ambient

thermistor

R7T Mixed leaving water thermistor

S1S # Preferential kWh rate power supply contact

S2S # Electrical meter pulse input 1

S3S # Electrical meter pulse input 2

S4S # Safety thermostat

S6S~S9S # Digital power limitation inputs

SS1 (A4P) * Selector switch

TR1 Power supply transformer

CN1-2, X*A

X*H, X*Y

X*M Terminal strip

Translation of text on wiring diagram

English Translation

3 wire type SPST 3 wire type SPST

Add. LWT zone Additional leaving water

Alarm output Alarm output

Anode Anode

Continuous Continuous current

Demand PCB Demand PCB

DHW pump Domestic hot water pump

DHW pump output Domestic hot water pump output

Digital I/O PCB Digital I/O PCB

Electric pulse meter inputs: 12 V
DC pulse detection (voltage
supplied by PCB)

Ext. ambient sensor option
(indoor or outdoor)

Ext. heat source External heat source

For preferential kWh rate power
supply

For safety thermostat For safety thermostat

Heat pump convector Heat pump convector

Connector

* = Optional

# = Field supply

temperature zone

Electric pulse meter inputs: 12 V
DC pulse detection (voltage
supplied by PCB)

External ambient sensor option
(indoor or outdoor)

For preferential kWh rate power
supply

English Translation

Indoor unit supplied from outdoor Indoor unit supplied from outdoor

Inrush Inrush current

Main LWT zone Main leaving water temperature

zone

Max. load Maximum load

Min. load Minimum load

NC valve Normal closed valve

NO valve Normal open valve

Normal kWh rate power supply Normal kWh rate power supply

Only for *** Only for ***

Only for demand PCB option Only for demand PCB option

Only for digital I/O PCB option Only for digital I/O PCB option

Only for ext. sensor (floor or
ambient)

Only for normal power supply
(standard)

Only for preferential kWh rate
power supply (outdoor)

Only for wired On/OFF
thermostat

Only for wireless On/OFF
thermostat

Only if no *** Only if no ***

Options: boiler output, alarm
output

Options: bottom plate heater OR
On/OFF output

Outdoor unit Outdoor unit

Power limitation digital inputs: 12
V DC / 12 mA detection (voltage
supplied by PCB)

Preferential kWh rate power
supply contact: 16 V DC
detection (voltage supplied by
PCB)

Remote user interface Remote user interface

Safety thermostat Safety thermostat

Safety thermostat contact: 16 V
DC detection (voltage supplied
by PCB)

Shut-off valve Shut-off valve

Space C/H On/OFF output Space cooling/heating On/OFF

Switch box Switch box

To bottom plate heater To bottom plate heater

Use normal kWh rate power
supply for indoor unit

User interface User interface

Only for external sensor (floor or
ambient)

Only for normal power supply
(standard)

Only for preferential kWh rate
power supply (outdoor)

Only for wired On/OFF
thermostat

Only for wireless On/OFF
thermostat

Options: boiler output, alarm
output

Options: bottom plate heater OR
On/OFF output

Power limitation digital inputs:
12VDC / 12mA detection
(voltage supplied by PCB)

Preferential kWh rate power
supply contact: 16VDC
detection (voltage supplied by
PCB)

Safety thermostat contact:
16VDC detection (voltage
supplied by PCB)

output

Use normal kWh rate power
supply for indoor unit

Installer reference guide

78

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

Electrical connection diagram

X1Y: 1-2

X1M: 1-2-3

X1M: 1-2-3

A4P:Y2
X2M:29

2x0.75

X2M: 30-31

X5M: 3-4

1

1

A4P: Y1

X2M: 29

230 V

A4P: X1-X2

230 V

230 V

230 V

A4P: X1M: H-C-com
X2M: L-N

A3P: X1M: 1-3

R2T

230 V

X11M : 5-6

X5M: 1-2

2x0.75

2x0.75

X2M: 34-35

230 V

X5M: 5-6

X5M: 7-8

X5M: 9-10

A8P: X801M: 1-5

A8P: X801M: 2-5

A8P: X801M: 3-5

A8P: X801M: 4-5

230 V

A4P: Y2

X2M: 29

2

2

2

X5M: 11-12

2

2

4D096036A

A3P: X1M: C-com-H

Only for *KRP1HB*

Field supply

communication

External sensor
(floor or ambient)

external thermistor (indoor or outdoor)

Only for KRCS01-1 or EKRSCA1

2way valve

Bottom plate heater

Only for *KBPHT*
& depending on model

X1M: L1-L2-L3-N-earth
or L-N-earth

2 core

3 core

Indoor unit

Notes:

- In case of signal cable: keep minimum distance to power cables > 5 cm

Outdoor unit

Cooling/heating
On/OFF output

Electricity meter pulse input 2

Electricity meter pulse input 1

Circulation pump for DHW

M2S (*KHBX units) for cooling mode

Ext. heat source (eg boiler)

alarm indication

2 core

2 core
signal

2 core
signal

signal

2 core

2 core

2 core

signal

2 core

2 core

Only for *KRTW
(wired room thermostat)

External room thermostat / Heat pump convector
(main and/or additional zone)

Optional part

Only for *KRTR
(wireless room thermostat)

Only for *KRTETS

2 core
(3m included)

signal

2 core

2 core

4 core for H only operation

5 core for C/H operation

2 core for H only operation

3 core for C/H operation

Only for
(heat pump convector)

signal

2 core

signal

2 core

signal

2 core

signal

2 core

Power limitation
demand input 4

Power limitation
demand input 3

Power limitation
demand input 2

Power limitation
demand input 1

Field supply

Standard part

Optional part

A2P: P1-P2 user interface

A2P: P1-P2 user interface

Only for *KRUCBL*

communication

2 core

main: X2M: 1-4
add: X2M: 1a-4

main: X2M: 1-2-3-4

add: X2M: 1a-2a-3-4

main: X2M: 1-2-4

add: X2M: 1a-2a-4

NO valve: X2M: 6-7
NC valve: X2M: 5-7

Cooling/heating

On/OFF output

Changeover to

ext. heat source output

Alarm output

Only for *KRP1AHTA

F1B: L-N + earth

2 core
signal

Safety thermostat

Field supply

Field supply

3 core

backup heater power supply (3 kW): 230 V + earth

Safety thermostat

normal kWh rate power supply for indoor unit: 230 V

unit preferential kWh rate power supply:
400 V or 230 V + earth

Only for preferential kWh rate power supply installation

5 or 3 core

2x0.75

2 core

2 core

5 or 3 core

unit power supply: 400 V or 230 V + earth

Only for normal power supply installation

Standard part

Power supply

For more details, please check the unit wiring.

14 Technical data

14.5 ESP curve: Indoor unit

Note: A flow error will occur when the minimum water flow rate is not

reached.

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

79

14 Technical data

80

70

60

50

30

40

20

10

0

0 5 10 15 20 25 30 35 40

45

A

B

C

4D097421-1

EHVZ16S18CB

A External static pressure (kPa)
B Water flow rate (l/min)
C Operation range

Additional/direct zone
Main/mixed zone

Operation area is extended to lower flow rates only in case the unit
operates with heat pump only. (Not in startup, no backup heater
operation, no defrost operation).

ESP=External static pressure [kPa] in the space heating circuit.

Flow=Water flow through the unit in the space heating circuit.

Notes:

▪ Selecting a flow outside the area of operation can cause damage

or malfunction of the unit. See also the minimum and maximum
allowed water flow range in the technical specifications.

▪ Water quality MUST be according to EN directive EC98/83EC.

Installer reference guide

80

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

15 Glossary

Dealer

Sales distributor for the product.

Authorized installer

Technical skilled person who is qualified to install the
product.

User

Person who is owner of the product and/or operates the
product.

Applicable legislation

All international, European, national and local directives,
laws, regulations and/or codes that are relevant and
applicable for a certain product or domain.

Service company

Qualified company which can perform or coordinate the
required service to the product.

Installation manual

Instruction manual specified for a certain product or
application, explaining how to install, configure and maintain
it.

Operation manual

Instruction manual specified for a certain product or
application, explaining how to operate it.

Maintenance instructions

Instruction manual specified for a certain product or
application, which explains (if relevant) how to install,
configure, operate and/or maintain the product or
application.

Accessories

Labels, manuals, information sheets and equipment that are
delivered with the product and that need to be installed
according to the instructions in the accompanying
documentation.

Optional equipment

Equipment made or approved by Daikin that can be
combined with the product according to the instructions in
the accompanying documentation.

Field supply

Equipment not made by Daikin that can be combined with
the product according to the instructions in the
accompanying documentation.

15 Glossary

ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1B – 2017.04

Installer reference guide

81

1/8

Field settings table

[6.8.2] = .... ID66F2

Applicable indoor units

*HVZ04S18CB3V
*HVZ08S18CB3V
*HVZ16S18CB3V

Notes

(*5) *04/08*
(*6) *16*

4P401673-1A - 2017.04

2/8

3/8

Breadcrumb Field code Setting name Range, step

Default valu

e

Date Value

User settings

└─ Preset values

└─ Room temperature

7.4.1.1 R/W [3-07]~[3-06], step: A.3.2.4

21°C

7.4.1.2 R/W [3-07]~[3-06], step: A.3.2.4

19°C

└─ LWT main

7.4.2.1 [8-09] R/W [9-01]~[9-00], step: 1°C

35°C

7.4.2.2 [8-0A] R/W [9-01]~[9-00], step: 1°C

33°C

7.4.2.5 R/W -10~10°C, step: 1°C

0°C

7.4.2.6 R/W -10~10°C, step: 1°C

-2°C

└─ Tank temperature

7.4.3.1 [6-0A] R/W 30~[6-0E]°C, step: 1°C

60°C

7.4.3.2 [6-0B] R/W 30~min(50, [6-0E])°C, step: 1°C

45°C

7.4.3.3 [6-0C] R/W 30~min(50, [6-0E])°C, step: 1°C

45°C

└─ Quiet level

7.4.4 R/W

0: Level 1 (*6)
1: Level 2 (*5)

2: Level 3

└─ Electricity price

7.4.5.1 [C-0C]
[D-0C]

R/W 0,00~990/kWh

0/kWh

7.4.5.2 [C-0D]
[D-0D]

R/W 0,00~990/kWh

0/kWh

7.4.5.3 [C-0E]
[D-0E]

R/W 0,00~990/kWh

0/kWh

└─ Fuel price

7.4.6 R/W 0,00~990/kWh

0,00~290/MBtu

8,0/kWh

└─ Set weather dependent

└─ Main

└────────────────── Set weather-dependent heating

7.7.1.1 [1-00] Set weather-dependent heating Low ambient temp. for LWT main zone heating

WD curve.

R/W -40~5°C, step: 1°C

-10°C

7.7.1.1 [1-01] Set weather-dependent heating High ambient temp. for LWT main zone heating

WD curve.

R/W 10~25°C, step: 1°C

15°C

7.7.1.1 [1-02] Set weather-dependent heating Leaving water value for low ambient temp. for

LWT main zone heating WD curve.

R/W

[9-01]~[9-00]°C, step: 1°C

35°C

7.7.1.1 [1-03] Set weather-dependent heating Leaving water value for high ambient temp. for

LWT main zone heating WD curve.

R/W [9-01]~min(45, [9-00])°C , step: 1°C

25°C

└─ Additional

└────────────────── Set weather-dependent heating

7.7.2.1 [0-00] Set weather-dependent heating Leaving water value for high ambient temp. for

LWT add zone heating WD curve.

R/W [9-05]~min(45,[9-06])°C, step: 1°C

35°C

7.7.2.1 [0-01] Set weather-dependent heating Leaving water value for low ambient temp. for

LWT add zone heating WD curve.

R/W [9-05]~[9-06]°C, step: 1°C

45°C

7.7.2.1 [0-02] Set weather-dependent heating High ambient temp. for LWT add zone heating

WD curve.

R/W 10~25°C, step: 1°C

15°C

7.7.2.1 [0-03] Set weather-dependent heating Low ambient temp. for LWT add zone heating

WD curve.

R/W -40~5°C, step: 1°C

-10°C

Installer settings

└─ System layout

└─ Standard

A.2.1.1 [E-00] R/O 0~5

0: LT s

p

lit

A.2.1.2 [E-01] R/O

0: 8 (*5)
1: 16

(*6)

A.2.1.3 [E-02] R/O

1: T

yp

e 2

A.2.1.4 [E-03] R/O

1: 1 ste

p

A.2.1.5 [5-0D] R/O

1: 1P,

(

1/1+2

)

A.2.1.6 [D-01] R/W

0: No

1: Open tariff
2: Closed tariff
3: Thermostat

A.2.1.7 [C-07] R/W 0: LWT control

1: Ext RT control

2: RT control

A.2.1.8 [7-02] R/W 0: 1 LWT zone

1: 2 LWT zones

A.2.1.9 [F-0D] R/W 0: Continuous

1: Sample

2: Re

q

ues

t

A.2.1.A [E-04] R/O

0: No (*6)
1: Yes

(*5)

A.2.1.B R/W 0: At unit

1: In room

└─ Options

A.2.2.1 [E-05] R/W

0: No

1: Yes

A.2.2.3 [E-07] R/O 0~6

1: T

yp

e 2

A.2.2.4 [C-05] R/W 1: Thermo ON/OFF

2: C/H re

q

ues

t

A.2.2.5 [C-06] R/W 1: Thermo ON/OFF

2: C/H re

q

ues

t

A.2.2.6.1 [C-02] Digital I/O PCB Ext. backup heat src R/W

0~3

0: No

1: Bivalent

A.2.2.6.2 [D-07] Digital I/O PCB Solar kit R/O

0~1

0: No

A.2.2.6.3 [C-09] Digital I/O PCB Alarm output R/W

0: Normally open

1: Normall

y

closed

A.2.2.6.4 [F-04] Digital I/O PCB Bottom plate heater R/W

0: No

1: Yes

A.2.2.7 [D-04] R/W

0: No

1: Pwr consm

p

ctrl

Forced off contact

Contact type add.

Demand PCB

Pump operation mode

Power saving possible

User interface location

DHW operation

DHW tank type

Contact type main

Indoor software type
Backup heater steps
BUH type

Unit control method

Number of LWT zones

High

Medium

Low

Unit type

Compressor type

Comfort (heating)

Eco (heating)

Storage comfort

Storage eco

Reheat

Field settings table

Installer setting at variance with
default value

Comfort (heating)

Eco (heating)

Comfort (heating)

Eco (heating)

(*5) *04/08*_
(*6) *16*

4P401673-1A - 2017.04

4/8

Breadcrumb Field code Setting name Range, step

Default valu

e

Date Value

Field settings table

Installer setting at variance with
default value

A.2.2.8 [D-08] R/W

0: No

1: 0,1 pulse/kWh
2: 1 pulse/kWh
3: 10 pulse/kWh
4: 100 pulse/kWh
5: 1000

p

ulse/kWh

A.2.2.9 [D-09] R/W

0: No

1: 0,1 pulse/kWh
2: 1 pulse/kWh
3: 10 pulse/kWh
4: 100 pulse/kWh
5: 1000

p

ulse/kWh

A.2.2.A [D-02] R/W

0~4

0: No

1: Secondary rtrn
2: Disinf. shunt

A.2.2.B [C-08] R/W

0: No

1: Outdoor sensor
2: Room sensor

└─ Capacities

A.2.3.2 [6-03] R/W 0~10 kW, step: 0,2 kW

3 kW

A.2.3.6 [6-07] R/W 0~200 W, step: 10 W

0 W

└─ Space operation

└─ LWT settings

└────────────────── Main

A.3.1.1.1 R/W 0: Fixed

1: Weather dep.

2: Fixed + scheduled
3: WD + scheduled

A.3.1.1.2.1 [9-01] Temperature range Minimum temp (heating) R/W 15~37°C, step: 1°C

25°C

A.3.1.1.2.2 [9-00] Temperature range Maximum temp (heating) R/W 37~55, step: 1°C

55°C

A.3.1.1.5 [8-05] R/W

0: No

1: Yes

A.3.1.1.6.1 [F-0B] Shut-off valve Thermo On/OFF R/W

0: No

1: Yes

A.3.1.1.7 [9-0B] R/W 0: Quick

1: Slo

w

└────────────────── Additional

A.3.1.2.1 R/W 0: Fixed

1: Weather dep.

2: Fixed + scheduled
3: WD + scheduled

A.3.1.2.2.1 [9-05] Temperature range Minimum temp (heating) R/W 15~37°C, step: 1°C

25°C

A.3.1.2.2.2 [9-06] Temperature range Maximum temp (heating) R/W 37~55, step: 1°C

55°C

└────────────────── Delta T source

A.3.1.3.1 [9-09] R/W 3~10°C, step: 1°C

5°C

└─ Room thermostat

A.3.2.1.1 [3-07] Room temp. range Minimum temp (heating) R/W 12~18°C, step: A.3.2.4

12°C

A.3.2.1.2 [3-06] Room temp. range Maximum temp (heating) R/W 18~30°C, step: A.3.2.4

30°C

A.3.2.2 [2-0A] R/W -5~5°C, step: 0,5°C

0°C

A.3.2.3 [2-09] R/W -5~5°C, step: 0,5°C

0°C

A.3.2.4 R/W 0: 0,5 °C

1: 1 °C

└─ Operation range

14~35°C, step: 1°C

25°C

(*5)

14~35°C, step: 1°C

35°C

(*6)

└─ Domestic hot water (DHW)

└─ Type

A.4.1 [6-0D] R/W 0: Reheat only

1: Reheat + sched.

2: Scheduled onl

y

└─ Disinfection

A.4.4.1 [2-01] R/W 0: No

1: Yes

A.4.4.2 [2-00] R/W 0: Each day

1: Monday
2: Tuesday
3: Wednesday
4: Thursday

5: Friday

6: Saturday
7: Sunda

y

A.4.4.3 [2-02] R/W 0~23 hour, step: 1 hour

23

A.4.4.4 [2-03] R/W

60°C

A.4.4.5 [2-04] R/W 40~60 min, step: 5 min

40 min

└─ Maximum setpoint

A.4.5 [6-0E] R/W 40~60°C, step: 1°C

60°C

└─ SP mode

A.4.6 R/W

0: Fixed

1: Weather de

p

.

└─ Weather dependent curve

A.4.7 [0-0B] Weather-dependent curve Leaving water value for high ambient temp. for

DHW WD curve.

R/W 35~[6-0E]°C, step: 1°C

55°C

A.4.7 [0-0C] Weather-dependent curve Leaving water value for low ambient temp. for

DHW WD curve.

R/W 45~[6-0E]°C, step: 1°C

60°C

A.4.7 [0-0D] Weather-dependent curve High ambient temp. for DHW WD curve. R/W 10~25°C, step: 1°C

15°C

A.4.7 [0-0E] Weather-dependent curve Low ambient temp. for DHW WD curve. R/W -40~5°C, step: 1°C

-10°C

Start time

Temperature target
Duration

R/W

Disinfection

Operation day

Heating

Room temp. offset

Ext. room sensor offset

Room temp. step

A.3.3.1 [4-02] Space heating OFF temp

BUH: step 1

Bottom plate heater

LWT setpoint mode

Modulated LWT

Emitter type

LWT setpoint mode

External kWh meter 1

External kWh meter 2

DHW pump

External sensor

4P401673-1A - 2017.04

(*5) *04/08*_

(*6) *16*

5/8

Breadcrumb Field code Setting name Range, step

Default valu

e

Date Value

Field settings table

Installer setting at variance with
default value

└─ Heat sources

└─ Backup heater

A.5.1.1 [4-00] R/W 0~2

0: Disabled

1: Enabled

A.5.1.4 [5-01] R/W -15~35°C, step: 1°C

0°C

└─ System operation

└─ Auto restart

A.6.1 [3-00] R/W 0: No

1: Yes

└─ Preferential kWh rate

A.6.2.1 [D-00] R/W

0~3

0: None

2: BUH onl

y

A.6.2.2 [D-05] R/W 0: Forced off

1: As normal

└─ Pwr consumpt. Control

A.6.3.1 [4-08] R/W

0: No limitation

1: Continuous
2: Di

g

ital inputs

A.6.3.2 [4-09] R/W 0: Current

1: Powe

r

A.6.3.3 [5-05] R/W 0~50 A, step: 1 A

50

A

A.6.3.4 [5-09] R/W 0~20 kW, step: 0,5 kW

20 kW

A.6.3.5.1 [5-05] Amp. limits for DI Limit DI1 R/W 0~50 A, step: 1 A

50

A

A.6.3.5.2 [5-06] Amp. limits for DI Limit DI2 R/W 0~50 A, step: 1 A

50

A

A.6.3.5.3 [5-07] Amp. limits for DI Limit DI3 R/W 0~50 A, step: 1 A

50

A

A.6.3.5.4 [5-08] Amp. limits for DI Limit DI4 R/W 0~50 A, step: 1 A

50

A

A.6.3.6.1 [5-09] kW limits for DI Limit DI1 R/W 0~20 kW, step: 0,5 kW

20 kW

A.6.3.6.2 [5-0A] kW limits for DI Limit DI2 R/W 0~20 kW, step: 0,5 kW

20 kW

A.6.3.6.3 [5-0B] kW limits for DI Limit DI3 R/W 0~20 kW, step: 0,5 kW

20 kW

A.6.3.6.4 [5-0C] kW limits for DI Limit DI4 R/W 0~20 kW, step: 0,5 kW

20 kW

A.6.3.7 [4-01] R/W

0~2

0: None

2: BUH

└─ Averaging time

A.6.4 [1-0A] R/W

0: No averaging

1: 12 hours
2: 24 hours
3: 48 hours
4: 72 hours

└─ Ext amb. sensor offset

A.6.5 [2-0B] R/W -5~5°C, step: 0,5°C

0°C

└─ Boiler efficiency

A.6.A [7-05] R/W

0: Very high

1: High
2: Medium
3: Low
4: Ver

y

low

└─ Emergency

A.6.C R/W

0: Manual

1: Automatic

└─ Overview settings

A.8 [0-00] R/W [9-05]~min(45,[9-06])°C, step: 1°C

35°C

A.8 [0-01] R/W [9-05]~[9-06]°C, step: 1°C

45°C

A.8 [0-02] R/W 10~25°C, step: 1°C

15°C

A.8 [0-03] R/W -40~5°C, step: 1°C

-10°C

A.8 [0-04] R/W

8

A.8 [0-05] R/W

12

A.8 [0-06] R/W

35

A.8 [0-07] R/W

20

A.8 [0-0B] R/W 35~[6-0E]°C, step: 1°C

55°C

A.8 [0-0C] R/W 45~[6-0E]°C, step: 1°C

60°C

A.8 [0-0D] R/W 10~25°C, step: 1°C

15°C

A.8 [0-0E] R/W -40~5°C, step: 1°C

-10°C

A.8 [1-00] R/W -40~5°C, step: 1°C

-10°C

A.8 [1-01] R/W 10~25°C, step: 1°C

15°C

A.8 [1-02] R/W

[9-01]~[9-00], step: 1°C

35°C

A.8 [1-03] R/W [9-01]~min(45, [9-00])°C , step: 1°C

25°C

A.8 [1-04] R/W

1

A.8 [1-05] R/W

1

A.8 [1-06] R/W

20

A.8 [1-07] R/W

35

A.8 [1-08] R/W

22

A.8 [1-09] R/W

18

A.8 [1-0A] R/W

0: No averaging

1: 12 hours
2: 24 hours
3: 48 hours
4: 72 hours

--

--

--

--

-­What is the averaging time for the outdoor temp?

Low ambient temp. for DHW WD curve.

Low ambient temp. for LWT main zone heating WD curve.

High ambient temp. for LWT main zone heating WD curve.

Leaving water value for low ambient temp. for LWT main zone heating WD curve.

Leaving water value for high ambient temp. for LWT main zone heating WD curve.

--

--

--

-­Leaving water value for high ambient temp. for DHW WD curve.

Leaving water value for low ambient temp. for DHW WD curve.

High ambient temp. for DHW WD curve.

Leaving water value for high ambient temp. for LWT add zone heating WD curve.

Leaving water value for low ambient temp. for LWT add zone heating WD curve.

High ambient temp. for LWT add zone heating WD curve.

Low ambient temp. for LWT add zone heating WD curve.

--

Type

Amp. value

kW value

Priority

Equilibrium temp.

Allowed heaters

Forced pump OFF

Mode

Operation mode

(*5) *04/08*_
(*6) *16*

4P401673-1A - 2017.04

6/8

Breadcrumb Field code Setting name Range, step

Default valu

e

Date Value

Field settings table

Installer setting at variance with
default value

A.8 [2-00] R/W 0: Each day

1: Monday
2: Tuesday
3: Wednesday
4: Thursday

5: Friday

6: Saturday
7: Sunda

y

A.8 [2-01] R/W 0: No

1: Yes

A.8 [2-02] R/W 0~23 hour, step: 1 hour

23

A.8 [2-03] R/W

60°C

A.8 [2-04] R/W 40~60 min, step: 5 min

40 min

A.8 [2-05] R/W 4~16°C, step: 1°C

12°C

A.8 [2-06] R/W 0: Disabled

1: Enabled

A.8 [2-09] R/W -5~5°C, step: 0,5°C

0°C

A.8 [2-0A] R/W -5~5°C, step: 0,5°C

0°C

A.8 [2-0B] R/W -5~5°C, step: 0,5°C

0°C

A.8 [3-00] R/W 0: No

1: Yes

A.8 [3-01]

0

A.8 [3-02]

1

A.8 [3-03]

4

A.8 [3-04]

2

A.8 [3-05]

1

A.8 [3-06] R/W 18~30°C, step: A.3.2.4

30°C

A.8 [3-07] R/W 12~18°C, step: A.3.2.4

12°C

A.8 [3-08] R/W

35°C

A.8 [3-09] R/W

15°C

A.8 [4-00] R/W 0: Disabled

1: Enabled

2: Onl

y

DHW

A.8 [4-01] R/W

0~2

0: None

2: BUH
14~35°C, step: 1°C

25°C

(*5)

14~35°C, step: 1°C

35°C

(*6)

A.8 [4-03] R/W

3

A.8 [4-04]

2

A.8 [4-05]

0

A.8 [4-06]

0/1

A.8 [4-07] R/W

1

A.8 [4-08] R/W

0: No limitation

1: Continuous
2: Di

g

ital inputs

A.8 [4-09] R/W 0: Current

1: Powe

r

A.8 [4-0A]

0

A.8 [4-0B] R/W

1

A.8 [4-0D] R/W

3

A.8 [4-0E] Is the installer on site? R/W

0: No

1: Yes

A.8 [5-00] R/W 0: Allowed

1: Not allowe

d

A.8 [5-01] R/W -15~35°C, step: 1°C

0°C

A.8 [5-02] R/W 0: Disabled

1: Enabled

A.8 [5-03] R/W -15~35°C, step: 1°C

0°C

A.8 [5-04] R/W 0~20°C, step: 1°C

10°C

A.8 [5-05] R/W 0~50 A, step: 1 A

50

A

A.8 [5-06] R/W 0~50 A, step: 1 A

50

A

A.8 [5-07] R/W 0~50 A, step: 1 A

50

A

A.8 [5-08] R/W 0~50 A, step: 1 A

50

A

A.8 [5-09] R/W 0~20 kW, step: 0,5 kW

20 kW

A.8 [5-0A] R/W 0~20 kW, step: 0,5 kW

20 kW

A.8 [5-0B] R/W 0~20 kW, step: 0,5 kW

20 kW

A.8 [5-0C] R/W 0~20 kW, step: 0,5 kW

20 kW

A.8 [5-0D] R/O 0~5

1: 1P,

(

1/1+2

)

A.8 [5-0E]

1

A.8 [6-00] R/W 2~20°C, step: 1°C

2°C

A.8 [6-01] R/W 0~10°C, step: 1°C

2°C

A.8 [6-02] R/W

0

A.8 [6-03] R/W 0~10 kW, step: 0,2 kW

3 kW

A.8 [6-04] R/W

0

A.8 [6-05]

0

A.8 [6-06]

0

A.8 [6-07] R/W 0~200 W, step: 10 W

0 W

-­What is the capacity of the backup heater step 1?

--

--

-­What is the capacity of the bottom plate heater?

What is the requested limit for DI3?

What is the requested limit for DI4?

What type of backup heater installation is used?

-­The temperature difference determining the heat pump ON temperature.

The temperature difference determining the heat pump OFF temperature.

What is the requested limit for DI1?

What is the requested limit for DI2?

What is the requested limit for DI3?

What is the requested limit for DI4?

What is the requested limit for DI1?

What is the requested limit for DI2?

--

Is backup heater operation allowed above equilibrium temperature during space
heating operation?
What is the equilibrium temperature for the building?

Space heating priority.

Space heating priority temperature.

Set point correction for domestic hot water temperature.

-- (Do not change this value)

-­Which power limitation mode is required on the system?

Which power limitation type is required?

--

--

R/W

--

--

--

--

-­What is the BUH operation mode?

Which electric heater has priority?

A.8 [4-02] Below which outdoor temperature is heating allowed?

--

--

--

-­What is the maximum desired room temperature in heating?

What is the mimimum desired room temperature in heating?

Room frost protection

Adjust the offset on the measured room temperature

Adjust the offset on the measured room temperature

What is the required offset on the measured outdoor temp.?

Is auto restart of the unit allowed?

--

When should the disinfection function be executed?

Should the disinfection function be executed?

When should the disinfection function start?

What is the disinfection target temperature?
How long must the tank temperature be maintained?

Room antifrost temperature

4P401673-1A - 2017.04

(*5) *04/08*_

(*6) *16*

7/8

Breadcrumb Field code Setting name Range, step

Default valu

e

Date Value

Field settings table

Installer setting at variance with
default value

A.8 [6-08] R/W

2~20°C, step: 1°C
10°C

A.8 [6-09]

0

A.8 [6-0A] R/W 30~[6-0E]°C, step: 1°C

60°C

A.8 [6-0B] R/W 30~min(50, [6-0E])°C, step: 1°C

45°C

A.8 [6-0C] R/W 30~min(50, [6-0E])°C, step: 1°C

45°C

A.8 [6-0D] R/W 0: Reheat only

1: Reheat + sched.

2: Scheduled onl

y

A.8 [6-0E] R/W 40~60°C, step: 1°C

60°C

A.8 [7-00] R/W

0

A.8 [7-01] R/W

2

A.8 [7-02] R/W 0: 1 LWT zone

1: 2 LWT zones

A.8 [7-03]

2,5

A.8 [7-04]

0

A.8 [7-05] R/W

0: Very high

1: High
2: Medium
3: Low
4: Ver

y

low

A.8 [8-00]

1 min

A.8 [8-01] R/W 5~95 min, step: 5 min

30 min

A.8 [8-02] R/W 0~10 hour, step: 0,5 hour

0,5 hour

A.8 [8-03] R/W

50

A.8 [8-04] R/W 0~95 min, step: 5 min

95 min

A.8 [8-05] R/W

0: No

1: Yes

A.8 [8-06] R/W 0~10°C, step: 1°C

3°C

A.8 [8-07] R/W

18

A.8 [8-08] R/W

20

A.8 [8-09] R/W [9-01]~[9-00], step: 1°C

35°C

A.8 [8-0A] R/W [9-01]~[9-00], step: 1°C

33°C

A.8 [8-0B]

13

A.8 [8-0C]

10

A.8 [8-0D]

16

A.8 [9-00] R/W 37~55, step: 1°C

55°C

A.8 [9-01] R/W 15~37°C, step: 1°C

25°C

A.8 [9-02] R/W

22

A.8 [9-03] R/W

5

A.8 [9-04] R/W 1~4°C, step: 1°C

1°C

A.8 [9-05] R/W 15~37°C, step: 1°C

25°C

A.8 [9-06] R/W 37~55, step: 1°C

55°C

A.8 [9-07] R/W

5

A.8 [9-08] R/W

22

A.8 [9-09] R/W 3~10°C, step: 1°C

5°C

A.8 [9-0A] R/W

5

A.8 [9-0B] R/W 0: Quick

1: Slo

w

A.8 [9-0C] R/W 1~6°C, step: 0,5°C

1 °C

A.8 [9-0D] R/W 0~8, step:1

0 : 100%
1~4 : 80~50%
5~8 : 80~50%

6

A.8 [9-0E]

6

A.8 [A-00]

0

A.8 [A-01]

0 (*5)
3

(*6)

A.8 [A-02]

0 (*5)
1

(*6)

A.8 [A-03]

0

A.8 [A-04]

0

A.8 [B-00]

0

A.8 [B-01]

0

A.8 [B-02]

0

A.8 [B-03]

0

A.8 [B-04]

0

A.8 [C-00] R/O 0~1

1: Heat

pump p

riorit

y

A.8 [C-01]

0

A.8 [C-02] R/W

0~3

0: No

1: Bivalent

A.8 [C-03] R/W -25~25°C, step: 1°C

0°C

A.8 [C-04] R/W 2~10°C, step: 1°C

3°C

A.8 [C-05] R/W 1: Thermo ON/OFF

2: C/H re

q

ues

t

A.8 [C-06] R/W 0: -

1: Thermo ON/OFF

2: C/H re

q

ues

t

A.8 [C-07] R/W 0: LWT control

1: Ext RT control

2: RT control

Is an external backup heat source connected?

Bivalent activation temperature.

Bivalent hysteresis temperature.

What is the thermo request contact type for the main zone?

What is the thermo request contact type for the add. zone?

What is the unit control method in space operation?

--

--

--

-­Domestic heating water priority.

--

--

--

--

--

--

--

What is the desired delta T in heating?

-­What emitter type is connected to the main LWT zone?

Room temperature hysteresis.

Pump speed limitation

--

-­Leaving water temperature overshoot temperature.

What is the mimimum desired LWT for add. zone in heating?

What is the maximum desired LWT for add. zone in heating?

--

--

--

--

-­What is the maximum desired LWT for main zone in heating?

What is the mimimum desired LWT for main zone in heating?

--

Allow modulation of the LWT to control the room temp?

Leaving water temperature maximum modulation.

--

-­What is the desired comfort main LWT in heating?

What is the desired eco main LWT in heating?

Boiler efficiency

-­Maximum running time for domestic hot water operation.

Anti-recycling time.

-­Additional running time for the maximum running time.

What is the maximum temperature setpoint?

--

-­How many leaving water temperature zones are there?

--

--

What is the hysteresis to be used in reheat mode?

-­What is the desired comfort storage temperature?

What is the desired eco storage temperature?

What is the desired reheat temperature?

What is the desired DHW production type?

(*5) *04/08*_
(*6) *16*

4P401673-1A - 2017.04

8/8

Breadcrumb Field code Setting name Range, step

Default valu

e

Date Value

Field settings table

Installer setting at variance with
default value

A.8 [C-08] R/W

0: No

1: Outdoor sensor
2: Room sensor

A.8 [C-09] R/W

0: Normally open

1: Normall

y

closed

A.8 [C-0A]

0

A.8 [C-0C] R/W 0~7

0

A.8 [C-0D] R/W 0~7

0

A.8 [C-0E] R/W 0~7

0

A.8 [D-00] R/W

0~3

0: None

2: BUH onl

y

A.8 [D-01] R/W

0: No

1: Open tariff
2: Closed tariff
3: Thermostat

A.8 [D-02] R/W

0~4

0: No

1: Secondary rtrn
2: Disinf. shunt

A.8 [D-03] R/W

0: Disabled

1: Enabled, shift 2°C (from -2 to 2°C)
2: Enabled, shift 4°C (from -2 to 2°C)
3: Enabled, shift 2°C (from -4 to 4°C)
4: Enabled, shift 4°C

(

from -4 to 4°C

)

A.8 [D-04] R/W

0: No

1: Pwr consm

p

ctrl

A.8 [D-05] R/W 0: Forced off

1: As normal

A.8 [D-07] R/O

0

A.8 [D-08] R/W

0: No

1: 0,1 pulse/kWh
2: 1 pulse/kWh
3: 10 pulse/kWh
4: 100 pulse/kWh
5: 1000

p

ulse/kWh

A.8 [D-09] R/W

0: No

1: 0,1 pulse/kWh
2: 1 pulse/kWh
3: 10 pulse/kWh
4: 100 pulse/kWh
5: 1000

p

ulse/kWh

A.8 [D-0A]

0

A.8 [D-0B]

2

A.8 [D-0C] R/W 0~49

0

A.8 [D-0D] R/W 0~49

0

A.8 [D-0E] R/W 0~49

0

A.8 [E-00] R/O

0~5

0: LT s

p

lit

A.8 [E-01] R/O

0: 8 (*5)
1: 16

(*6)

A.8 [E-02] R/O 0~1

1: T

yp

e 2

A.8 [E-03] R/O 0~2

1: 1 ste

p

A.8 [E-04] R/O

0: No (*6)
1: Yes

(*5)

A.8 [E-05] R/W

0: No

1: Yes

A.8 [E-06] R/O 0: No

1: Yes

A.8 [E-07] R/O 0~6

1: T

yp

e 2

A.8 [E-08] R/W

0: Disabled (*6)
1: Enabled

(*5)

A.8 [E-09]

0

A.8 [E-0A]

0

A.8 [E-0B] R/O

0~1

1: Yes

A.8 [E-0C]

0

A.8 [E-0D]

0

A.8 [F-00] R/W

0: Disabled

1: Enabled

A.8 [F-01] R/W

20

A.8 [F-02] R/W 3~10°C, step: 1°C

3°C

A.8 [F-03] R/W 2~5°C, step: 1°C

5°C

A.8 [F-04] R/W

0: No

1: Yes

A.8 [F-05]

0

A.8 [F-06]

0

A.8 [F-09] R/W

0: Disabled

1: Enabled

A.8 [F-0A]

0

A.8 [F-0B] R/W

0: No

1: Yes

A.8 [F-0C] R/W

1

A.8 [F-0D] R/W 0: Continuous

1: Sample

2: Re

q

ues

t

-­Close shut-off valve during thermo OFF?

-­What is the pump operation mode?

Forced off contact type

Bottom plate heater ON temperature.

Bottom plate heater hysteresis.

Is a bottom plate heater connected?

--

-­Pump operation during flow abnormality.

-­Is a bi-zone kit installed?

--

-­Pump operation allowed outside range.

--

Is the power saving function available on the outdoor unit?

Can the system prepare domestic hot water?

Is a DHW tank installed in the system?

What kind of DHW tank is installed?

Power saving function for outdoor unit.

--

What is the medium electricity price (Do not use)

What is the low electricity price (Do not use)

Which type of unit is installed?

Which type of compressor is installed?

What is the indoor unit software type?

What is the number of backup heater steps?

-­Is an external kWh meter used for power measurement?

Is an external kWh meter used for power measurement?

--

-­What is the high electricity price (Do not use)

Which heaters are permitted if prefer. kWh rate PS is cut?

Which type of DHW pump is installed?

Leaving water temperature compensation around 0°C.

Is a demand PCB connected?

Is the pump allowed to run if prefer. kWh rate PS is cut?

Which type of external sensor is installed?

What is the required alarm output contact type?

-­High electricity price decimal (Do not use)

Medium electricity price decimal (Do not use)

Low electricity price decimal (Do not use)

4P401673-1A - 2017.04

(*5) *04/08*_

(*6) *16*

4P401677-1B 2017.04

Copyright 2015 Daikin