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

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

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

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

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

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

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

3 About the box

102~114 kg

1×

2×

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

4 About the units and options

a~e+i

f+g

4×

2×

1×

1× 1× 1× 1×

2× 1×4×

a b c d

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

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

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

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

5 Application guidelines

HPC1

FHL1 FHL2 FHL3

HPC2 HPC3

a b c

g hf

d e

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

5 Application guidelines

a b c d ge h ii

fki

HPC1

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

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

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Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

5 Application guidelines

c f

a b

c a b

d f

e g

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

5 Application guidelines

c c

fed

A B

gfe

A B

c d



▪ 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

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.

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Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

5 Application guidelines

A B

A8P

DI4

DI3

DI1

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

6 Preparation

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

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

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

6 Preparation

>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)

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

6 Preparation

▪ 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

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

a b c d ge h ii

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

6 Preparation

T2M2T3

FHL1

FHL2

FHL3

M2 M3

T2 T3

HPC1 HPC2 HPC3

a b c

g hf

d e

0.3

0.5

1.5

2.5

100500

150 200 250 300 350 400 450

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

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

180 l

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

6 Preparation

0 1

5 3

22 19

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

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

(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

(b)

bottom plate heater

12 Room thermostat 2 or 3 100mA

13 Outdoor ambient

(b)

temperature sensor

14 Indoor ambient

(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

(b)

pump

19 Alarm output 2

20 Changeover to external

(b)

heat source control

21 Space heating

(b)

operation control

22 Power consumption

digital inputs

23 Safety thermostat for

2 (per input signal)

(b)

the main zone

24 Safety thermostat for

(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)

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

2+GND or 3+GND

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

45°~90°

(4)

1×

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

7 Installation

(mm)

>150

620

350

(345-355)

4× M12

≥150 mm

11710270

45 376 191

a b

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

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

43 378

10 60

58 16

71 16

191

117102

a b

d (4×)

61 99

1671

60 159154182

a b

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

7 Installation

a b

R=0.4~0.8

45°

±2

90°

±2

a b

▪ 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)

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

ERHQ+ERLQ011~016 + EHVZ16S18CB

Daikin Altherma – Low temperature split

4P401677-1B – 2017.04

7 Installation

a b

a b c d e

c d

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

7 Installation

b d

4× Ø6 mm

b a

h h

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

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

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