Daikin EKHWS 150D3V3 Series, Installation Manual

Table of contents

Installation manual

2

EKHWS150~300D3V3

Domestic hot water tank with option kit for air to water heat pump

system

4P510672-1C – 2023.02

Table of contents

1 General safety precautions

2

1.1

About the documentation ..........................................................

2

1.1.1

Meaning of warnings and symbols..............................

2

1.2

For the installer..........................................................................

3

1.2.1

General .......................................................................

3

1.2.2

Installation site ............................................................

3

1.2.3

Water ..........................................................................

3

1.2.4

Electrical .....................................................................

3

2 Specific installer safety instructions

4

3 About the documentation

5

3.1

About this document..................................................................

5

4 About the box

5

4.1

Domestic hot water tank ............................................................

5

4.1.1

To unpack the domestic hot water tank ......................

5

4.1.2

To remove the accessories from the domestic hot
water tank ...................................................................

6

5 About the units and options

6

5.1

Identification ..............................................................................

6

5.1.1

Identification label: Domestic hot water tank...............

6

6 Preparation

6

6.1

Overview: Preparation ...............................................................

6

6.2

Preparing the installation site ....................................................

6

6.2.1

Installation site requirements of the domestic hot
water tank ...................................................................

6

6.3

Preparing water piping ..............................................................

7

6.3.1

Water circuit requirements ..........................................

7

6.4

Preparing electrical wiring .........................................................

7

6.4.1

About preparing electrical wiring.................................

7

6.4.2

Safety device requirements ........................................

8

7 Installation

8

7.1

Overview: Installation ................................................................

8

7.2

Opening the units ......................................................................

8

7.2.1

To open the switch box cover of the domestic hot
water tank ...................................................................

8

7.3

Mounting the domestic hot water tank.......................................

8

7.3.1

Precautions when mounting the indoor unit................

8

7.3.2

To install the domestic hot water tank.........................

8

7.4

Connecting water piping ............................................................

8

7.4.1

About connecting the water piping..............................

8

7.4.2

Precautions when connecting the water piping...........

8

7.4.3

To connect the water piping........................................

8

7.4.4

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

9

7.4.5

To insulate the water piping ........................................

9

7.4.6

To connect the 3-way valve ........................................

9

7.5

Connecting the electrical wiring.................................................

10

7.5.1

About connecting the electrical wiring......................... 10

7.5.2

To connect the electrical wiring to the indoor unit....... 10

7.5.3

To connect the electrical wiring to the outdoor unit..... 11

7.5.4

To connect the electrical wiring on the domestic hot
water tank ................................................................... 12

7.6

Finishing the domestic hot water tank installation .....................

13

7.6.1

To close the domestic hot water tank ......................... 13

8 Commissioning

13

8.1

Checklist before commissioning ................................................

13

8.2

Checklist during commissioning ................................................

14

9 Hand-over to the user

14

10 Maintenance and service

14

10.1

Maintenance safety precautions................................................

14

10.2

Checklist for yearly maintenance of the domestic hot water
tank............................................................................................

14

11 Troubleshooting

15

11.1

Overview: Troubleshooting......................................................... 15

11.2

Precautions when troubleshooting ............................................. 15

11.3

Solving problems based on symptoms....................................... 15

11.3.1

Symptom: No water flow from hot taps ........................ 15

11.3.2

Symptom: The water from the hot taps is cold............. 15

11.3.3

Symptom: Intermittent water discharge ....................... 15

11.3.4

Symptom: Continuous water discharge ....................... 15

12 Disposal

16

13 Technical data

16

13.1

Components: Domestic hot water tank ...................................... 16

13.2

Wiring diagram: Domestic hot water tank................................... 16

14 Glossary

17

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  in  the  installer  reference  guide  MUST  be
performed by an authorised 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/SCALDING

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

DANGER: RISK OF EXPLOSION

Indicates a situation that could result in explosion.

WARNING

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

WARNING: FLAMMABLE MATERIAL

CAUTION

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

NOTICE

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

INFORMATION

Indicates useful tips or additional information.

Symbols used on the unit:

Symbol

Explanation

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