0020149585 00 expen 072012 - hotpoolmail.hotpool.com.hk/documents/ved/ved plus operating and... ·...

Operating and installation instructions

EXP

electronicVED plus

For the operator

Operating instructions

electronicVED plus

Electric instantaneous water heater

Table of contents

2 Operating instructions for the electronicVED plus electric instantaneous water heater 0020149585_00

Table of contents

1 Notes on the documentation ................................ 31.1 Storing documents ..................................................... 31.3 Applicability of the instructions .............................. 31.4 Identification plate ..................................................... 31.5 CE label ......................................................................... 3

2 Safety ............................................................................42.1 Classification of action-related warnings .............42.2 Intended use ................................................................42.3 General safety information ......................................4

3 Function and operation ...........................................63.1 Setting the display parameters ...............................63.1.1 Key combinations on the display ............................ 73.1.2 Setting the water temperature ................................ 73.1.3 Saved temperatures (MEMO 1 to 4) ...................... 73.1.4 Setting theeco function ............................................83.1.5 Activating/deactivating the key lock .....................83.1.6 Calling up the menu and going back to the

temperature display ...................................................83.1.7 Setting the maximum temperature

(to prevent scalding) ..................................................93.1.8 Setting/activating and deactivating the

comfort temperature (scald protection) ............. 103.1.9 Displaying and resetting the energy and

water consumption (Reset) ......................................113.1.10 Setting the display language ..................................123.1.11 Setting the display lighting .....................................123.1.12 Activating the power display ..................................133.1.13 Activating the flow rate indicator ..........................14

4 Energy-saving tips ..................................................15

5 Detecting and rectifying faults ...........................15

6 Care ...............................................................................15

7 Maintenance, guarantee and customer service .........................................................................15

8 Recycling and disposal ...........................................15

Operating instructions for the electronicVED plus electric instantaneous water heater 0020149585_00 3

1 Notes on the documentation

The following information is intended to help you throughout the entire documentation. Further docu-ments apply in combination with these instructions for use.We accept no liability for any damage caused by failure to observe these instructions.

Other applicable documentsWhen operating the electronicVED plus, you must also observe all operating instructions that are included with other components of your system.

1.1 Storing documents

> Store these operating instructions and all other docu-ments provided in such a way that they are available whenever required.

1.3 Applicability of the instructions

These instructions apply for the following only:

Type designation Article number

VED E 18/7 P 0010007723

VED E 21/7 P 0010007724

VED E 24/7 P 0010007725

VED E 27/7 P 0010007726

Tab. 1.1 Identifying the unit

1.4 Identification plate

The unit's article number is part of the serial number. To find out the serial and article numbers, refer to the iden-tification plate. The identification plate can be found to the right, next to the operator control panel, under the cover.

Vaillant GmbH Remscheid / Germany

Serial - No.

VED E 18/7 P

21093500200752100006000000N3

18 kW; 400 V 3~ 50Hz1MPa (10bar); p 15 >= 900 Ohm cm; IP 25Observe operating- and installation manualAppliance must be earthed

Fig. 1.1 Example of an identification plate

Explanation of the symbols on the identification plate

CE mark, see section 1.5

The VDE GS mark confirms that the unit complies with standards and has been tested for safety

Symbol confirming conformity with the electromagnetic compatibility standard

Ensure proper disposal at the end of its useful life (not household waste)

Read the operating and installation instructions

21093500200752100006000000N3

Serial number as a bar code and in plain text.The 7th to 16th digits of the serial number form the unit's article number

1.5 CE label

CE labelling shows that, based on the type overview, the units comply with the basic requirements of the applicable directives.

Notes on the documentation 1

2 Safety

2.1 Classification of action-related warnings

The action-related warnings are classified in accordance with the severity of the possible danger using the follow-ing warning signs and signal words:

Warning symbol

Signal word Explanation

a Danger!Imminent danger to life or risk of severe personal injury

e Danger!Risk of death from electric shock

a Warning.Risk of minor personal injury

b Caution.Risk of material or environ-mental damage

Tab. 2.1 Meaning of warning symbols and signal words

2.2 Intended use

Vaillant electronicVED plus electric instantaneous water heaters have been constructed using state-of-the-art technology in accordance with the recognised safety rules and regulations. Nevertheless, there is still a risk of death or serious injury to the user or others or of dam-age to the unit and other property in the event of improper use or use for which the unit is not intended.This unit is not designed to be used by persons (includ-ing children) with limited physical, mental or sensory capabilities or by persons who do not have enough expe-rience and/or knowledge, unless they are supervised by a person who is responsible for their safety or have been instructed by him/her about how to use the unit.Children must be supervised to ensure that they do not play with the unit. Vaillant electronicVED plus electric instantaneous water heaters must only be used to heat up drinking water. Vaillant electronicVED plus electric instantaneous water heaters are suitable for use only in an enclosed, frost-free room in a domestic environment. Vaillant electron-icVED plus electric instantaneous water heaters are not suitable for use in secondary returns.Any other use that is not specified in these instructions, or use beyond that specified in this document shall be considered improper use. Any direct commercial or industrial use is also deemed to be improper. The manu-

facturer/supplier is not liable for any damage resulting from such use. In this case, the user alone bears the risk.Intended use includes the following:– observance of the accompanying operating, instal-

lation and maintenance instructions for the Vaillant product and any other parts and components of the system

– compliance with all inspection and maintenance conditions listed in the instructions.

Caution!Improper use of any kind is prohibited.

2.3 General safety information

Installation, start-up, maintenance and repairAll work involved in the installation, initial start-up, main-tenance and repair of the electronicVED plus electric instantaneous water heater must only be carried out by an approved heating specialist company, who also assumes the responsibility for installing the unit prop-erly and commissioning it for the first time. The electronicVED plus electric instantaneous water heater must be installed in strict compliance with these installa-tion instructions.

Risk of death from electric shock from live lines and connections!During all work on the open unit, particularly on electri-cal lines and connections, there is a risk of death from electric shock.

> Do not carry out any work on the unit yourself. > Inform your heating specialist company if your

electronicVED plus is not working correctly.

Risk of death from electric shock from live lines and connections!The drinking water used must demonstrate resistance greater than or equal to 900 ohm at 15 °C. Otherwise the unit must not be used.

> Before installing the unit, ask the competent person at your local water company to inform you about the water resistance and conductivity.

> Consult your competent person if you have any doubt as to the requirements for water quality.

Risk of being scalded by hot water!The outlet temperatures at the draw-off points can be up to 60 °C.

> When using an electronicVED plus electric instantane-ous water heater, be aware of the risk of scalding from high outlet temperatures.

> Set your electronicVED plus to a maximum of 43 °C if you want to be protected from scalding.

2 Safety


a

a

Material damage inside the unit caused by poor quality waterAn electronicVED plus electric instantaneous water heater must only be used to heat up drinking water. This drinking water must meet the specific German or Aus-trian legal requirements for quality. Otherwise, it is not possible to rule out the risk of corrosion inside the unit.

> Consult a competent person if you have any doubt as to the requirements for water quality.

Risk of frost.If an electronicVED plus electric instantaneous water heater is placed out of operation for a relatively long period of time in an unheated room in cold weather, the water in the unit and pipes may freeze.

> Consult a competent person if you have any doubt as to requirements.

> Ensure that your electronicVED plus electric instanta-neous water heater is installed in a permanently frost-free room.

Material damage to the appliance caused by changesNo changes must be made to your electronicVED plus.

In the event of a fault > If your electronicVED plus is not producing hot water

or if any other fault occurs, inform your approved heating specialist company.

> If the electronicVED plus ever malfunctions, inform your approved heating specialist company.

> Do not carry out any repairs yourself. > Do not open the unit cover under any circumstances.

Safety 2


a

a


3 Function and operation

If you turn on the hot water at a draw-off point (mixer or separate tap), your electronicVED plus will automatically heat up the drinking water.

a Danger!Risk of being scalded by hot water.The water temperature at the draw-off points can reach up to 60 °C.

> When using an electronicVED plus electric instantaneous water heater, be aware of the risk of scalding from high outlet tem-peratures.


> Section 3.1.7 "Setting the maximum temper-ature" contains all relevant information on the "scald protection" function, which can be configured on your electronicVED plus.

- + Memo eco

°C38,5- +

2 1

Fig. 3.1 Display

> Press the + button (1) until the desired temperature is reached. The hot water that you can now take from the draw-off point will be at the desired temperature.

> If the temperature is too high, press the — button (2). The water drawn will be cooler.

> Choose a temperature of between 20 °C and 60 °C to see what suits you best.

i All important display set-up options for

your electronicVED plus are described in section 3.1.

i Your electronicVED plus controls the water

temperature but not the volume you take from the draw-off point. Therefore, the desired temperature may not be reached when drawing large volumes, especially in cold weather. If this occurs, briefly reduce the water volume being drawn. The water temper-ature will increase very quickly.

3.1 Setting the display parameters

i The electronicVED plus display can be, but

does not have to be, set up before checking the function. It is sensible to first only set the desired hot water temperature.

The current performance features of the electronicVED plus are displayed as soon as the unit is connected and configured. When in operation, the display shows the selected water temperature. Furthermore, the maximum water temperature that can be set will be displayed on the uppermost display line. This maximum temperature can be set freely and can be between 30 °C and 60 °C. The following display is an example of this.

max. 42 °C

42.0 °C- + MEMO eco

The set target temperature is factory-set to 42 °C.

The setting and display options for your VED display are described in the following excerpts in the order that they appear in the menus.

To access the current temperature setting quickly, you always have two options:

> Set the current hot water temperature directly by using the +/— buttons.

or > Set the current hot water temperature using the MEMO button.



3.1.1 Key combinations on the display

Key combination Result

Briefly press MEMO and eco simultaneously

Main menu for setting basic func-tions, such as the scald protection function, language settings and energy consumption.

Press MEMO for longer than 3 seconds Installer level menu to call up unit

parameters.

Press — and + simultaneously for longer than 3 seconds

Key lock is activated. To cancel the lock once more, press — and + for longer than 3 seconds.

Tab. 3.1 Display key combinations

3.1.2 Setting the water temperature

> Press the + button to increase the water temperature. > Press the — button to decrease the water tempera-

ture.

i The water temperature can be increased or

decreased in increments of half a degree Cel-sius. The range of temperatures that can be selected is between 20 °C and 60 °C.

3.1.3 Saved temperatures (MEMO 1 to 4)

The MEMO memo function allows the current hot water temperature to be changed quickly. By pressing the but-ton twice you can set the desired temperature to one of 4 preset temperatures.

i You can change the preset temperatures at

any time. However, note that you cannot set a higher temperature than the maximum tem-perature set in the Scald protection menu; see section 3.1.7.

> Briefly press the MEMO button once. You will see the following display screen:

35 °C 38 °C 42 °C 50 °C

M1 M2 M3 M4

> Briefly press the button that corresponds to your desired temperature, e.g. M3.

You will see the following display screen:

max. 42 °C eco

42.0 °C

- + MEMO eco

The desired preset temperature is selected.

> If you want to change the desired preset temperature, press the M3 button for 3 seconds.

You will see the following display screen:

Memory 3

42.0 °C- + save

The current saved temperature and the memory location (here: Memory 3) are displayed.

> Use the + and — buttons to change the Memory tem-perature that is displayed.

> Briefly press the save button once to save this tem-perature.

Function and operation 3


> Press the button to quit the Memory function. If you previously changed the temperature without pressing the save button, this change will not be remembered.

3.1.4 Setting the eco function

The eco function is a function that saves water and energy. If the eco function is activated, the unit output is reduced.

> Press the eco button to activate the function. > Press the eco button again to deactivate the function.

max. 42 °C eco

38.0 °C

- + MEMO eco

If the eco function is activated, it will be shown on the top-right of the display.

3.1.5 Activating/deactivating the key lock

> Press and hold both the + and — buttons at the same time for longer than 3 seconds.

> Press and hold both the + and — buttons at the same time for longer than 3 seconds again to deactivate the key lock.

i When the key lock is activated, pressing any

display button will not have any effect; all functions are locked.

3.1.6 Calling up the menu and going back to the temperature display

> Briefly press the MEMO and eco buttons simultane-ously to reach the Menu.

> Briefly press the button to return to the tempera-ture display.

Menu

Display settings

Scald protection

Consumption

Select language

ok

All the basic VED settings will be carried out from this menu.

i Use the button to go back through the

menus one step at a time.

> Continuously press the button until the initial dis-play screen is shown again.

max. 42 °C

42.0 °C

- + MEMO eco



3.1.7 Setting the maximum temperature (to prevent scalding)

a Danger!Risk of being scalded by hot water.The water temperature at the draw-off points can reach up to 60 °C.

> When using an electronicVED plus electric instantaneous water heater, be aware of the risk of scalding from high outlet tem-peratures.


The scald protection function can only be deactivated at the factory.

> Press the MEMO and eco buttons simultaneously to reach the Menu.

Menu

Display settings

Scald protection

Consumption

Select language

ok

The cursor is next to the Display settings menu point.

> Press the button.The cursor is next to the Scald protection menu point.

> Press the ok button.

Scald protection

max. temperature

comfort temperature

ok

The cursor is next to the max. temperature menu point.


Set temperaturecurrent: --°C

new --°C

- + ok

> Press the + button to increase the temperature. > Press the — button to decrease the temperature. > Press the ok button to confirm the chosen tempera-

ture. > Press the button twice to return to the "Scald pro-

tection" menu.The selected maximum temperature is displayed on the top line of the water temperature display screen.

i It is not possible to request a higher water

temperature than the temperature selected and confirmed using the ok button. Also note that the maximum temperature interacts with the comfort temperature function.



3.1.8 Setting/activating and deactivating the comfort temperature (scald protection)


Menu

Display settings

Scald protection

Consumption

Select language

ok

The cursor is next to the Display settings menu point. > Press the button.

The cursor is next to the Scald protection menu point. > Press the ok button.

Scald protection

max. temperature

comfort temperature

ok

The cursor is next to the max. temperature menu point. > Press the button once.

Scald protection

max. temperature

comfort temperature

ok

The cursor is next to the comfort temperature menu point.


Set temperaturecurrent: --°C

new -- °C- + ok

> Press the + button to increase the temperature. > Press the — button to decrease the temperature. > Press the ok button to confirm the chosen tempera-

ture. > Press the button to return to the "Scald protec-

tion" menu.The comfort temperature selected here can be altered by briefly pressing the +/- key combination. If water is drawn off within the next 30 seconds, the water will be heated to this temperature. If no water is drawn off in this time, or if the water stops being drawn off, the dis-play will return to the previous temperature setting.

To deactivate the comfort temperature function, go to the Set comfort temperature menu on the display as follows:

> Press the — button to decrease the displayed temper-ature to below 20 °C.

-- °C will then be displayed. The comfort temperatureis then deactivated.

i Also note the comfort temperature interacts

with the max. temperature function.



3.1.9 Displaying and resetting the energy and water consumption (Reset)

i Note that the electronicVED plus is not a cali-

brated measuring instrument. Due to toler-ances in the electronic semiconductor and sensors, the values displayed may deviate from the real values.

i The energy consumption data displayed can-

not be legally used to prepare or compare energy consumption calculations of any kind.


Menu

Display settings

Scald protection

Consumption

Select language

ok

The cursor is next to the Display settings menu point. > Press the button twice.

The cursor is next to the Consumption menu point. > Press the ok button.

Consumption

Energy consumption

Water consumption

ok

The cursor is next to the Energy consumption menu point. You can display the energy consumption in

kilowatt hours or water consumption in litres for a spe-cific period of time (select using the or button).

> After selection, press the ok button.

Energy consumption

since reset

the last 30 days

the last 365 days

ok

The cursor is next to the since reset menu point. The display screen illustrated above is an example of the Energy consumption sub-menu. Regardless of whether or not you wish to query the energy or water consump-tion, the time cycles remain identical. You can display the energy or water consumption data since the unit was last reset to its factory settings (Reset), or the last month (30 days) or the last year (365 days).

> Press the or the button to make a selection. > Confirm by pressing the ok button.

To reset the display of either the energy or water con-sumption data to 0, proceed as follows:

> Within the Consumption menu, select either Energy consumption or Water consumption.

> Press the ok button.The cursor is next to the since reset menu point.


Energy consumptionsince reset

13.4 kWh

Reset

The display screen illustrated above is an example of the Energy consumption sub-menu. Follow the same



procedure to reset the display of either the energy or water consumption data.

> Press the Reset button.The display will be reset to 0.

> Press the button to quit the display.

3.1.10 Setting the display language


Menu

Display settings

Scald protection

Consumption

Select language

ok

The cursor is next to the Display settings menu point. > Press the button three times.

The cursor is next to the Select language menu point. > Press the ok button.

German

English

Bulgarian

Croatian

Polish

Serbian

Slowenian

ok

The language marked with an arrow is the language used on the display.

> Press the or button to change the display lan-guage.

> Confirm this change by pressing the ok button.

3.1.11 Setting the display lighting


Menu

Display settings

Scald protection

Consumption

Select language

ok

The cursor is next to the Display settings menu point. > Press the ok button.

Display settings

Lighting

Output display

Volume flow display

ok

The cursor is next to the Lighting menu point. > Press the ok button.

Lighting is auto

on

off

auto

ok



The following settings are possible:

on The display lighting is perma-nently on.

off The display lighting is perma-nently off.

automatic

When drawing hot water, the dis-play lighting turns on. When oper-ating the display, e.g. setting the temperature, the display lighting also turns on. If nothing is hap-pening, the display lighting turns off.

3.1.12 Activating the power display


Menu

Display settings

Scald protection

Consumption

Select language

ok


Display settings

Backlight

Output display

Volume flow display

ok

The cursor is next to the Backlight menu point. > Press the button.

The cursor is next to the Output display menu point. > Press the ok button.

Output display is on

on

off

ok

> Press the or button to activate (on) or to deacti-vate (off) the power display.


i If the power display is activated, the current

energy consumption will be displayed in kilo-watts when drawing water.

Example:

max. 60 °C eco

41.0 °C 12.7 kW

- + MEMO eco



3.1.13 Activating the flow rate indicator


Menu

Display settings

Scald protection

Consumption

Select language

ok


Display settings

Backlight

Output display

Volume flow display

ok

The cursor is next to the Backlight menu point. > Press the button twice.

The cursor is next to the Volume flow display menu point.


Volume flow display is on

on

off

ok

> Press the or button to activate (on) or deacti-vate (off) the volume flow display.


i If the volume flow display is activated, the

current water flow will be displayed in litres per minute when drawing water.

Example:

max. 42 °C

41.0 °C 8 l/min

- + MEMO eco



4 Energy-saving tips

You can help to save energy by following the tips and advice below:

Appropriate hot water temperatureThe water should only be heated up to the extent that is necessary for use. Any further heating will result in unnecessary energy consumption. For you, this means that you should:

> Activate the eco function on your electronicVED plus (Press the eco button).

> Wherever possible, do not set the temperature higher than you actually require. Avoid unnecessarily mixing in cold water.

5 Detecting and rectifying faults

e Danger!Risk of death from electric shock.Live lines and connections may cause a potentially lethal electric shock!

> Do not attempt to repair the unit yourself under any circumstances.

> Under no circumstances should the unit cladding be removed.

> If the unit ever malfunctions, inform your heating specialist company immediately.

6 Care

There is no need to care for your Vaillant electronicVED plus electric instantaneous water heater because all internal parts are protected against dirt and moisture. You can clean the exterior of the unit with a damp cloth and a little soap.

i Do not use any abrasive scouring or cleaning

agents when cleaning the unit cladding.

7 Maintenance, guarantee and customer service

The permanent operational readiness, safety, reliability and long service life of your electronic VED plus electric instantaneous water heater require annual inspections and maintenance work to be carried out by a competent person.

a Danger!

Risk of injury and material damage due to incorrect maintenance and repairs.If you fail to carry out maintenance, or if you carry this out incorrectly, this may adversely affect the operating reliability of the unit.

> Never attempt to perform maintenance or repairs on your VED electric instanta-neous water heater by yourself.

> You must employ an approved heating spe-cialist company to complete such work. We recommend making a maintenance agree-ment.

b Caution.Possible material damage to the unit.A lack of maintenance can affect the func-tional safety of the VED. E.g. unit defects caused by limescale formation. In areas of hard water (more than 14 °dH = 2.5 CaCO

3

mmol/l) or very hard water (more than 20 °dH = 3.6 CaCO

3 mmol/l), a significantly

more frequent maintenance interval may be required.

> Have your electronicVED plus inspected at least every 3 years by a competent person.

> If you live in an area with very hard water, Vaillant recommends that you have the maintenance service carried out once a year by a competent person.

8 Recycling and disposal

If your Vaillant unit is labelled with this symbol, it does not belong with your household waste at the end of its useful life.

> Instead, take the unit to a collection point for recycling electrical and electronic devices.

For more information on where to take your used electrical or electronic devices, contact your town or district authori-ties, waste disposal company, or the competent person who installed the unit.

Energy-saving tips 4, Detecting and rectifying faults 5, Care 6Maintenance, guarantee and customer service 7 Recycling and disposal 8

electronicVED plus

Electric instantaneous water heater

For the competent person

Installation instructions

Table of contents

2 Installation instructions for the electronicVED plus electric instantaneous water heater 0020149585_00

Table of contents

1 Notes on the documentation ................................ 31.1 Other applicable documents .................................... 31.2 Storing documents ..................................................... 31.3 Symbols used ............................................................... 31.4 Applicability of the instructions .............................. 31.5 CE label ......................................................................... 3

2 Safety ............................................................................42.1 Safety and warning information .............................42.1.1 Classification of action-related warnings .............42.2 Intended use ................................................................42.3 General safety information ......................................4

3 Equipment and functional description ...............63.1 Overview .......................................................................63.2 Function.........................................................................6

4 Installation .................................................................. 74.1 Scope of delivery ........................................................ 74.2 Installation site ............................................................ 74.3 Required minimum clearances ................................84.4 Mounting the unit to the wall ..................................84.4.1 Unit and connection dimensions ............................84.4.2 Removing the unit cladding .....................................94.4.3 Installing the unit ........................................................94.5 Connecting the hot and cold water ........................114.6 Connecting the unit to the electricity supply .....124.6.1 Electrical connection from above ..........................124.6.2 Electrical connection from below ..........................134.6.3 Optional load-shedding relay ..................................13

5 Starting up/decommissioning ..............................135.1 Purging the unit .........................................................135.2 Fitting the unit cladding ...........................................145.3 Setting the display parameters ..............................145.3.1 Calling up the installer menu ..................................155.3.2 Displaying unit parameters .....................................155.4 Checking the system's functionality .....................165.5 Decommissioning .......................................................165.5.1 Taking out of service temporarily ..........................165.5.2 Taking out of service permanently ........................16

6 Handing over to the operator ..............................16

7 Replacement parts and accessories .................17

8 Detecting and rectifying faults ...........................17

9 Inspection and maintenance ................................18

10 Technical data ...........................................................19

3Installation instructions for the electronicVED plus electric instantaneous water heater 0020149585_00

1 Notes on the documentation

The following information is intended to help you throughout the entire documentation. Other documents apply in addition to these installation instructions.We accept no liability for any damage caused by failure to observe these instructions.

1.1 Other applicable documents

> When installing the electronicVED plus, you must observe all the installation instructions for the assem-blies and components of the system.

These installation instructions are enclosed with the various system parts and supplementary components.

> Furthermore, observe all operating instructions enclosed with components of the system.

1.2 Storing documents

> Pass these installation instructions and all other appli-cable documents and, if necessary, any required tools to the system operator.

The system operator should retain these instructions and tools so that they are available when required.

1.3 Symbols used

The symbols used in the text are explained below:

i Symbol that denotes useful tips and information

> Symbol for a required action

1.4 Applicability of the instructions

These instructions apply for the following only:

Type designation Article number

VED E 18/7 P 0010007723

VED E 21/7 P 0010007724

VED E 24/7 P 0010007725

VED E 27/7 P 0010007726

Tab. 1.1 Identifying the unit

The unit's article number is part of the serial number. To find out the serial and article numbers, refer to the iden-tification plate. The identification plate can be found to the right, next to the operator control panel, under the cover.

1.5 CE label

CE labelling shows that, based on the type overview, the units comply with the basic requirements of the following directives:

– Electromagnetic compatibility directive (Council Direc-tive 2004/108/EC)

– Low voltage directive (Council Directive 2006/95/EC)

Notes on the documentation 1

2 Safety

2.1 Safety and warning information

When installing the electronicVED plus electric instanta-neous water heater, you must observe the general safety instructions and warning notes that appear before all of the actions.

2.1.1 Classification of action-related warnings

The action-related warnings are classified in accordance with the severity of the possible danger using the follow-ing warning signs and signal words:

Warning symbol

Signal word Explanation

a Danger!Imminent danger to life or risk of severe personal injury

e Danger!Risk of death from electric shock

a Warning.Risk of minor personal injury

b Caution.Risk of material or environ-mental damage

Tab. 2.1 Meaning of warning symbols and signal words

2.2 Intended use

Vaillant electronicVED plus electric instantaneous water heaters have been constructed using state-of-the-art technology in accordance with the recognised safety rules and regulations. Nevertheless, there is still a risk of death or serious injury to the user or others or of dam-age to the unit and other property in the event of improper use or use for which the unit is not intended.This unit is not designed to be used by persons (includ-ing children) with limited physical, mental or sensory capabilities or by persons who do not have enough expe-rience and/or knowledge, unless they are supervised by a person who is responsible for their safety or have been instructed by him/her about how to use the unit.Children must be supervised to ensure that they do not play with the unit. Vaillant electronicVED plus electric instantaneous water heaters must only be used to heat up drinking water. Vaillant electronicVED plus electric instantaneous water heaters are suitable for use only in an enclosed, frost-free room in a domestic environment. Vaillant electronicVED plus electric instantaneous water heaters are not suitable for use in secondary returns.Any other use, or use beyond that specified, shall be considered improper use. Any direct commercial or industrial use is also deemed to be improper. The manu-facturer/supplier is not liable for any claims or damage resulting from improper use. The user alone bears the risk. Intended use includes observance of the operating and installation instructions and all other applicable documents, as well as compliance with the maintenance and inspection conditions.

2.3 General safety information

Installation, start-up, maintenance and repairAll work involved in the installation, initial start-up, main-tenance and repair of the electronicVED plus electric instantaneous water heater must only be carried out by an approved heating specialist company, who also assumes the responsibility for installing the unit prop-erly and commissioning it for the first time. The electronicVED plus electric instantaneous water heater must be installed in strict compliance with these installa-tion instructions.

Risk of death from electric shock from live lines and connections!During all work on the open unit, particularly on electri-cal lines and connections, there is a risk of death from electric shock.

> When working on the open unit, interrupt the power supply. The unit must be de-energised.

> Check that the unit is de-energised. > Ensure that the power cannot be restored inadvert-

ently to the unit while you are working on it.

2 Safety


a

a

Risk of death from electric shock from live lines and connections!The drinking water used must demonstrate resistance greater than or equal to 900 ohm at 15 °C. Otherwise the unit must not be used.

> Before installing the unit, ask your water company to inform you about the water resistance and conductivity.

Risk of being scalded by hot water!If the VED is connected to a solar thermal system, the intake temperature must be limited to a maximum of 60 °C by fitting structural precautions (e.g. a mixer valve). When using the unit in conjunction with a solar thermal system, we recommend setting the intake tem-perature to between 38 °C and 40 °C.

> Set the scald protection function on your electronicVED plus to a maximum of 43 °C if you want to be protected from scalding.

> Inform the operator that there is a risk of scalding when the water temperature exceeds 43 °C.

Material damage inside the unit caused by poor quality waterAn electronicVED plus electric instantaneous water heater must only be used to heat up drinking water. This drinking water must meet the specific German or Aus-trian legal requirements for quality. Otherwise, it is not possible to rule out the risk of corrosion inside the unit.

Material damage due to improper use and/or unsuitable toolsImproper use and/or the use of unsuitable tools may result in material damage (e.g. water leaks).

> Always use a suitable open-end spanner to tighten or undo threaded connections.

> Do not use pipe wrenches, extensions, etc.

Risk of frost.If an electronicVED plus electric instantaneous water heater is placed out of operation for a relatively long period of time in an unheated room in cold weather, the water in the unit and pipes may freeze.

> Install the electronicVED plus electric instantaneous water heater in a permanently frost-free room.

> Store the electronicVED plus electric instantaneous water heater in a permanently frost-free area.

Material damage to the appliance caused by changesNo changes must be made to the electronicVED plus.

> Do not make any changes to the unit yourself. > Inform the operator that they must not make any

changes to the unit or to the electricity lines or water pipes.

In the event of a fault > Read the "Detecting and rectifying faults" section to

find out what you must do in the case of fault. > Inform the operator that they must not attempt to

repair the unit under any circumstances. > Inform the operator that they must not remove the

unit cladding.

Safety 2

Installation instructions for the electronicVED plus electric instantaneous water heater 0020149585_00 5

a

a


3 Equipment and functional description

3.1 Overview

3

2

1

4

5

6

78

9

11

10

Fig. 3.1 Overview of the electronicVED plus

Position Component

1 Mains connection terminal

2 Upper anti-spray-water sleeve

3 Adjustment spindle

4 Safety switch

5 Electronics

6Optional space underneath for mains connection termi-nal

7 Cold water connection

8 Lower anti-spray-water sleeve

9 Hot water connection

10 Safety thermostat (STL)

11 Heating block

Tab. 3.1 electronicVED plus components

3.2 Function

Using bare wire heating in the unit's heating block, drinking water is heated and can then be drawn from one or more points. The electronics measure the tem-perature of the cold water supply and the water volume flow. The electrical performance required to heat the water to the required temperature is calculated using these two values. The unit's display temperature can be changed in increments of 0.5 °C. The volume and heat of the hot water is dependent on the electronicVED plus performance category and settings. The output of each VED unit is listed in section 11. In addition, the water and energy consumption data can be linked to the perform-ance data via the display. This means that the electronicVED plus can be configured in such a way that both the current and cumulative energy consumption can be displayed and called up. The built-in Memo func-tion allows 4 fixed temperatures to be saved and these can be called up by pressing a button.

3 Equipment and functional description


4 Installation

a Risk of death!Risk of death due to improper installation!All work involved in the installation, start-up, maintenance and repair of the electronicVED plus electric instantaneous water heater must only be carried out by a recognised compe-tent person, who also assumes the responsi-bility for installing the unit properly and commissioning it for the first time. The electronicVED plus electric instantaneous water heater must be installed in strict com-pliance with these installation instructions.

i Flush the cold water pipes thoroughly before

installation.

4.1 Scope of delivery

> Check that the scope of delivery is complete (see tab. 4.1).

62

17

34

5

390

322

Hot water connection Cold water connection

Bottomelectrical connection

As required:Additional fixing point for back wall

Installation templatefor VED

100

Top electrical connection

170

Mounting plate

Fixing points

Fig. 4.1 Scope of delivery

No. Quantity Name

1 1electronicVED plus electric instantaneous water heater

2 1 Operating and installation instructions

3 1Box containing fixings (2 bolts, 2 rawl plugs, 1 seal, 1 special fixing screw)

4 1Cold water connection piece R 1/2 with a cold water stop valve

5 1Hot water connection piece R 1/2 supplied in the box

6 1 Installation plate

7 1 Installation template

Tab. 4.1 Scope of delivery

The electronicVED plus electric instantaneous water heater is completely pre-assembled. Once the unit has been fitted to the wall, only the water and electrical installation needs to be completed.

4.2 Installation site

b Caution.Risk of frost damage to the unit.If an electronicVED plus electric instantane-ous water heater is placed out of operation for a relatively long period of time in an unheated room in cold weather, the water in the unit and pipes may freeze. This results in damage to the unit.

> Install the unit in a permanently frost-free room.

i The electronicVED plus electric instantaneous

water heater meets the current safety regula-tions for protected zone 1 and can therefore also be installed above the bath or in a shower area.

> Wherever possible, install the unit near the draw-off point that will be most used.

Installation 4


4.3 Required minimum clearances

D

E

B B

C

A

C

Fig. 4.2 Installation clearances

KeyA At least 50 mmB At least 50 mmC At least 120 mmD At least 130 mmE Maximum 22 mm

The bottom section of the unit (D) must be level with the unit's bearing area on the wall; to a height of at least 130 mm. Any possible wall offset (e.g. due to tiles) must not exceed 22 mm (E). The distance to the floor must be at least 120 mm (C). The distance above, to the left and to the right of the unit must be at least 50 mm.

4.4 Mounting the unit to the wall

4.4.1 Unit and connection dimensions

240100

70

50

27

7

48

13

22 5

16

19

100

R 1

/2

35 35

1

2

3

5

6

4

Fig. 4.3 Unit dimensions

Key1 Upper anti-spray-water sleeve2 Central attachment3 Display4 Hot water connection R 1/25 Cold water connection R 1/26 Lower anti-spray-water sleeveR Outside thread R 1/2

39

0

32

28585

1

1

23

Fig. 4.4 Connection dimensions

Key1 Installation plate2 Cold water connection3 Hot water connection

4 Installation


4.4.2 Removing the unit cladding

1

3

4

2

5

Fig. 4.5 Removing the unit cladding

> Grip the two straps (1) on the panel (2). > Splay the two straps (pull them away from the unit). > Remove the panel (2). > Undo both bolts (3). > Fold up the cover (4). > Remove the display plug from the unit's electronics

(slot X7) (5). > Remove the cover (4) from the unit.

4.4.3 Installing the unit

i The electronicVED electric instantaneous

water heater must be hung on the wall vertically.

> Ensure the wall and all fixing elements are able to bear the load. An electronicVED plus weighs approx. 4.4 kilos when filled with water.

> Using figures 4.2 to 4.4, double check that the desired installation location meets the requirements.

39

0

32

2

85852

1

1

2

Fig. 4.6 Fitting the installation plate

> Hold the installation template against the wall and mark the fixing points.

> Fix the installation plate (1) to the fixing points (2) using the rawl plugs and bolts.

i When replacing a unit, you can use the previ-

ous drill holes as long as they are compatible with the additional holes on the installation plate.

Installation 4


e Danger!Risk of death from electric shock due to water penetration if the anti-spray-water sleeve is completely cut away.The anti-spray-water sleeve should prevent water penetrating the unit along the length of the mains connection cable. If the anti-spray-water sleeve is completely cut away, water can very easily penetrate and damage the unit and, in the worst case scenario, can cause a potentially lethal electric shock.

> Never cut off the anti-spray-water sleeve completely.

> Cut the end of the anti-spray-water sleeve in such a way that the sleeve tightly sur-rounds the mains connection cable.

Fig. 4.7 Cutting the anti-spray-water sleeve for the cable

routing

> Depending on the location of the mains connection cable in relation to the wall, fit the anti-spray-water sleeve at the top or the bottom (see fig. 4.7).

i Fit the anti-spray-water sleeve in such a way

that the sleeve tightly surrounds the mains connection cable. Water must not penetrate the unit's interior.

> Feed the cable through the anti-spray-water sleeve into the unit's interior.

4

1

2

3

Fig. 4.8 Fitting and adjusting the unit

> Fit the unit (2) to the retaining screw (1) on the instal-lation plate.

> Adjust the unit using the adjustment spindle (4). > Fix the unit using the fixing screw (3). > Align the unit (vertically and observing the clearances

detailed in fig. 4.2 to 4.4).

i As an option, the electronicVED plus can be

converted into an under-counter unit. To do this, the display must be rotated and screwed to the unit cladding. Then the cladding must be turned and attached to the unit in this rotated position.

Fig. 4.9 Optional under-counter conversion

4 Installation


4.5 Connecting the hot and cold water

i 18, 21 and 24 kW electronicVED plus units are

suitable for post-heating water that has already been pre-heated. It is possible to have inlet temperatures of up to 60 °C. The unit can thus be connected to existing solar and/or heat pump systems. 27 kW electronicVED plus units are not suitable as the water inlet temperature must not exceed 25 °C.

> Observe the following conditions in order to correctly fit the water connections: – All cold and hot water pipes can be made of steel,

copper or plastic. It is important to check with the manufacturer that pipes made of plastic can be used with temperatures of 65 °C in normal operat-ing mode. In addition, plastic pipes must be suitable for a significantly higher load in the short term.

– An expansion relief valve on the cold water pipe is not required.

– To simplify fitting the water connection, the bottom section of the unit can be folded up (see (1) in fig. 4.10). After fitting the connection, you must fold the bottom section of the unit back down until it is engaged again. The folding frame must not be removed.

1

Fig. 4.10 Unit's folding frame

b Caution.Risk of damage to the unit resulting from improper use and/or unsuitable tools.Improper use and/or the use of unsuitable tools may result in material damage (e.g. water leaks).

> Always use a suitable open-end spanner to tighten or undo threaded connections.

> Do not use pipe wrenches, extensions, etc.

b Caution.Possible damage caused by leaking water connections.Leaks may occur due to strains in the line material.

> Take care not to strain the lines as you tighten the water connections.

b Caution.Possible damage caused by unsuitable plastic pipes.Damage may be caused by unsuitable plastic pipes.

> When using plastic pipes, ensure that they withstand a maximum temperature of 95 °C and maximum pressure of 1 MPa (10 bar) for at least one hour (check manu-facturer's specifications).

> When using plastic pipes, ensure that they conform with DIN 16893 and DIN 16892 (check manufacturer's specifications).

Installation 4


1

2

34

5

6

7

Fig. 4.11 Water connections

> Put hemp on the two double nipples (2 and 6) and use the connections to screw the double nipples to the wall (1 and 7).

> Insert the seals (3) in the cap nuts of the cold (4) and hot water connections (5).

> Screw the cold water connection piece (4) to the cold water connection double nipple (2) in the wall (1).

> Screw the hot water connection piece (5) to the hot water connection double nipple (6) in the wall (7).

> Insert a seal in the cap nut of the unit-side hot water connection.

b Caution.Risk of damage due to pipes being blocked by foreign bodies in the water.A water filter that stops foreign bodies enter-ing the unit must be fitted to the cold water flow. The unit must not be used without a water filter. A water filter has been fitted inside the pipe at the factory.

> During installation, check that the water filter is present.

> Check that the cold water filter fitted at the factory is in the correct position in the unit-side cold water con-nection. The cold water filter is an additional seal on the cold water side.

4.6 Connecting the unit to the electricity supply

e Danger!Risk of death from electric shock from live lines and connections!

> Isolate all supplies from the power supply before carrying out electrical work.

> Check that there is no voltage in the supply lines and connections.

> Ensure that the power cannot be restored inadvertently to any of the supply lines and connections while you are working on the unit.

> When connecting the electricity supply, also observe the local regulations from the electricity supply com-pany as well as the specifications on the identification plate.

> Also note the following conditions: – The unit must be installed using a permanent con-

nection. – The permanent connection must be equipped with

a customer-supplied partition that has a contact separation of at least 3 mm on all lines. A line pro-tection switch, for example, is suitable for this purpose.

– The unit must be connected to the protective earth.

– The unit is delivered pre-assembled. When connect-ing the electricity supply, only the electricity line needs to be fed in to the unit and connected. This happens using one of the two anti-spray-water sleeves that prevent water penetrating the unit; see fig. 4.7, Cutting the anti-spray-water sleeve for the cable routing. The connection is fixed to the upper section of the unit at the factory. If required, it can be connected to the lower section of the unit but the electricity line must be fed through the lower anti-spray-water sleeve.

4.6.1 Electrical connection from above

The electricity line is fed through the upper anti-spray-water sleeve (see (2) in fig. 4.12). Figure 4.7 explains how the anti-spray-water sleeve must be prepared.

> Connect the individual conductors to L1, L2 and L3, and the protective earth to the mains connection ter-minal (1 in fig. 4.12).

4 Installation


3

3a

1

2

4

5

6

Fig. 4.12 Electrical connection from above or below

4.6.2 Electrical connection from below

The electricity line is fed through the lower anti-spray-water sleeve (5). Figure 4.7 explains how the anti-spray-water sleeve must be prepared.

> Unscrew the mains connection terminal (1) (see fig. 4.12).

> Move the mains connection terminal (6), including the internal cable, to the lower position (4) in the unit.

> Screw the mains connection terminal to the lower position (4).

> Pay particular attention to the internal protective earth (3) that is screwed to position 3a.

> Check again that the mains connection terminal cables are correctly positioned.

> Connect the individual conductors to L1, L2 and L3, and the protective earth to the mains connection ter-minal (1 in fig. 4.12).

4.6.3 Optional load-shedding relay

If required, a load-shedding relay that conforms with current standards can be connected to the electron-icVED plus. This relay will turn other power consumers off while hot water is being drawn off so that there is no overloading. The load-shedding relay must fulfil the fol-lowing criteria: – Input current < 15 A – Continuous current > 50 A > Install the optional load-shedding relay to the outer

conductor that is connected to the L2 mains connec-tion terminal of the electronicVED plus.

5 Starting up/decommissioning

5.1 Purging the unit

b Caution.Risk of damage from heating wire dry fire.The unit must be purged every time it is started up. Otherwise, there is a risk of dry fire and, as a consequence, damage to the unit.

> Ensure that the unit is de-energised every time the unit is started up or decommis-sioned.



To start up the unit, proceed as follows: > De-energise the unit. > Open the cold water stop valve. > Close and open the hot water draw-off valve several

times. The unit will then be purged. In normal operat-ing mode, the unit will not need to be purged again.

2

1

Fig. 5.1 Safety switch

> Push the safety switch (1) in, as shown in fig. 5.1.

i If the display cable is not plugged into the

electronics, the power cannot be regulated. The water temperature that the unit then provides will comply with the last value set.

Installation 4Starting up/decommissioning 5


5.2 Fitting the unit cladding

2

1

3

Fig. 5.2 Fitting the unit cladding

> Plug the display cable into slot X7 of the unit's elec-tronics, as illustrated in Figure 5.1, position (2).

> Put the unit cladding (3) on. > Tighten both bolts (2). > Grip the panel (1) using the two straps. > Splay the two straps (slightly pull the panel apart). > Put the panel (1) on. > Make sure that the hot water draw-off valve is closed. > Connect the unit to the electrical mains (switch on the

fuse).

5.3 Setting the display parameters

i The electronicVED plus display can be, but

does not have to be, set up before checking the function. It is sensible to first only set the desired hot water temperature.

The current performance features of the electronicVED plus are displayed as soon as the unit is connected and configured. When in operation, the display shows the desired water temperature. Furthermore, the maximum water temperature that your VED provides will be dis-played on the top display line. This maximum flow tem-perature can be set freely and can be between 30 °C and 60 °C. The following display is an example of this.

max. 42 °C

42.0 °C- + MEMO eco

The set target temperature is factory-set to 42 °C.

To access the current temperature setting quickly, you always have two options:

> Set the current hot water temperature directly by using the +/— buttons.

or > Set the current hot water temperature using the MEMO button.

i The settings for the installer menu on the

electronicVED plus display are described below. You can find a detailed description of all the display functions in the instructions for use included in this document.

5 Starting up/decommissioning


5.3.1 Calling up the installer menu

> Press and hold the MEMO button for longer than 3 seconds to reach the installer menu.

Appliance data

Remote control

ok

Using this menu, you have access to the current and cumulated Appliance data.

5.3.2 Displaying unit parameters

You are in the installer menu. The cursor is next to the Appliance data menu point.


Appliance data

current

cumulated

ok

The cursor is next to the current menu point. > Press the ok button.

Current appl. data

Inlet temp. 21 °C

Desired temp. 38 °C

Outlet temp. ---

Output 12.0 kW

Flow rate 8.0 l/min

ok

The following information is displayed:

Inlet temp.The current temperature of the drinking water, as measured at the unit's cold water inlet.

Desired temperature The target temperature set on the unit for the hot water output.

Outlet temp.The current temperature of the hot water, as measured at the hot water outlet.

Output The unit's current output, meas-ured in kilowatts.

Flow rate The current flow rate, measured in litres per minute.

Tab. 5.1 Current appliance data

> Press the button to return to the Appliance data menu.

The cursor is next to the current menu point. > Press the button.

The cursor is next to the cumulated menu point. > Press the ok button. The cumulated appliance data

will be displayed.

Appl. data history

Operated time 548 h

Period of use 112 h

Energy 107 kW

Water 2538 Litres

ok

Starting up/decommissioning 5


The following information is displayed:

Operated time The time in hours that the unit was connected to the power supply.

Period of use The time in hours that the unit has produced hot water.

EnergyEnergy consumption in kilowatt hours since the unit was con-nected to the power supply.

WaterWater consumption in litres since the unit was connected to the power supply.

Tab. 5.2 Cumulated appliance data

5.4 Checking the system's functionality

a Danger!Risk of being scalded by hot water!The outlet temperatures at the draw-off points can be up to 60 °C. and can cause scalding.

> Set the scald protection function on your electronicVED plus to a maximum of 43 °C if you want to be protected from scalding.


> Using the display buttons, test the unit's output by trying the running water at a draw-off point.

The water temperature on the electronicVED plus can be set in increments of 0.5 °C.

- + Memo eco

°C38,5- +

2 1

Fig. 5.3 Output selector switch

> Press the + button (1) or the — button (2) until the set target temperature is reached.

5.5 Decommissioning

5.5.1 Taking out of service temporarily

The VED can be taken out of service temporarily, e.g. for the purpose of maintenance work.

> De-energise the unit. > Close the cold water stop valve.

5.5.2 Taking out of service permanently

To shut down the VED permanently, proceed as follows: > De-energise the unit. > Close the cold water stop valve. > Carefully loosen the cold and hot water connections. > Capture the residual water (up to 0.4 litres) left inside

the unit using a suitable container. > Remove the unit from its mounting.

6 Handing over to the operator

a Danger!Risk of being scalded by hot water!Above a water temperature of 43 °C, there is a risk of scalding.


> Set the scald protection function on your electronicVED plus to a maximum of 43 °C if you want to be protected from scalding

The user must be trained in the handling and function of his electronicVED plus.

> Provide the operator with all relevant instructions and unit documentation for safe-keeping.

> Go through the instructions for use with the operator. > Answer any questions the operator may have. > Draw special attention to the safety information

which the operator must follow. > Inform the operator of the necessity to ensure that

the system is regularly inspected/maintained by a competent person (inspection and maintenance contract).

> Make the operator aware that the instructions should be kept near the electronicVED plus.

5 Starting up/decommissioning6 Handing over to the operator


7 Replacement parts and accessories

The original components of the unit were also certified as part of the CE declaration of conformity. If you do not use certified Vaillant genuine spare parts, this voids the CE conformity of the unit. We therefore strongly recom-mend that you fit Vaillant genuine spare parts.You can find information about available Vaillant genu-ine spare parts from the contact address provided on the reverse of this document.

> If you require spare parts for servicing or repair work, use only Vaillant genuine spare parts.

Fault/cause Procedure Testing/rectifying

No power. 1. Check the electrical con-nections

Ensure that the unit is supplied with the L1, L2 and L3 mains voltage.Check the protective devices.De-energise the unit and open the unit cladding.Check all the connection line connectors.

Resistance is outside the range of < 200 ohm.

2. Check the electrical func-tion of the heating ele-ment

Undo the connections 1 and 4 from the electronics. Measure the resistance value between the connections 1 and 4 on the electronics.The resistance must be < 200 ohm.

Water flow not adequate, water pressure is too low.

3. Check the minimum water flow rate

Ensure that there is an adequate water flow rate of more than 3 l/min. If the water volume is too low, check the water pressure, the fittings and the filter in the inlet. If the required water volume is not reached, check the motorised valve.

Nothing shown on the dis-play, no function can identi-fied. The safety switch has been triggered.

4. Check the safety switch Carry out the checks as described in points 1 - 5. Once you have found the fault, start the unit up again. If you have not found the fault, do not start the unit up. Inform Vaillant customer service.

No hot water or fluctuation in the outlet temperature.

5. Check the electronics Slowly open a draw-off point near the unit until approx. 3 l/min. Check whether a relay switch (a click) can be heard.No switch (click) can be heard:De-energise the unit and remove the unit cladding.· Check that the impeller moves freely by blowing hard on the inlet side; if necessary, clean or replace the impeller.· Otherwise, replace the electronics. Switch (click) can be heard:Check that the water temperature reaches the target temperature. Fluctuation in the outlet temperature:·Replace the electronics. Water temperature is not reached:·Check the motorised valve as described in point 6.· If the motorised valve functions correctly, change the electronics.

Flow rate cannot be set or the outlet temperature is not reached. Defective motorised valve.

6. Check the motorised valve The unit is ready for operation, the display electronics are connected, the unit cladding is closed. De-energise the unit for approx. 10 seconds. Switch the mains voltage on again. A motor noise must immediately be audible (the motorised valve is starting up). If you do not hear a motor noise, the valve is defective and must be replaced.If the motorised valve is working perfectly again, set the temperature to 60 °C. Quickly open a draw-off point with the highest flow rate possible (e.g. a bath). Then slowly reduce the flow rate and measure whether the selected outlet temperature is reached.

Tab. 8.1 Possible faults and remedial action

8 Detecting and rectifying faults

The faults listed here must only be rectified by an approved heating specialist company. When rectifying faults, note the following:

> Only use genuine spare parts for repairs. > Make sure the parts are correctly fitted and that their

original position and alignment are retained. > When removing water-carrying parts, capture the

residual water (up to 0.4 litres) left inside the unit using a suitable container.

i When diagnosing and rectifying faults, always

follow the order stated in tab. 8.1 for each individual point.

Replacement parts and accessories 7Detecting and rectifying faults 8


9 Inspection and maintenance

e Danger!Risk of death from electric shock from live lines and connections!

> Isolate all electrical supplies and connec-tions from the power supply before carry-ing out maintenance or repair work.



– A functional and visual inspection of the unit must be carried out every three years by a competent person.

– If the water is very hard, more regular de-scaling may be necessary.

– If the water has a large volume of suspended matter, the water filter in the cold water flow must be replaced more often. At the same time, the water fil-ter has a sealing function.

Carry out the following actions: > Replace the water filter in the cold water flow. > Check for deposits in the hot water pipe between the

heating block and the hot water connection. > When re-assembling the unit, insert a new flat seal

into the hot water connection. > Check whether the unit needs to be de-scaled and do

so if required.

i If the unit needs to be completely de-scaled,

attach a decalcification pump between the cold and hot water connection.

> After de-scaling the unit, flush it thoroughly with water.

> After de-scaling the unit, purge it (see section 5).

b Caution.Risk of damage caused by leaks.After changing the water filter in the cold water flow, leaks may occur due to the new filter being incorrectly fitted.

> When fitting a new water filter in the cold water flow, make sure that the filter is cor-rectly positioned in the pipe and that the connection is sealed.

9 Inspection and maintenance


10 Technical data

Unit type Art. no.

Unit VED E 18/7 P0010007723

VED E 21/7 P0010007724

VED E 24/7 P0010007725

VED E 27/7 P0010007726

For supplying one or more draw-off points 1)

Design Appliance for wall-mounted installation

Configuration Bare wire heating coil

Capacity l 0.4

Dimensions width Height Depth

mmmmmm

240481100

Weight when filled with water kg 4.4

Performance characteristics Electronically regulated output

Water inlet temperature °C 1...60 1...25

Switch-on water volume l/min 3

Switch-off water volume l/min 2.5

Switch-on flow pressure MPa 0.015

Max. water flow rate l/min 6 7 8 9

Rated overpressure MPa 1

Rated output* (T of max. 38 K) kW 15.7/18.0 18.5/21.0 21.0/24.0 23.7/27.0

Minimum water resistance at 15 °C cm 900

Measuring voltage 3/PE~ 380/400 V; 50 Hz

Safety Complies with German and Austrian safety regulations; radio-shielded; does not interact with the mains supply

Level of protection IP 25 = sprayed-water protection

Tab. 10.1 Technical data

1) = closed unit (pressure resistant)* at 380/400 V

Technical data 10

00

20

149

58

5_0

0 E

XP

en

07

20

12 –

Su

bje

ct t

o c

han

ge

Manufacturer

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