Vaillant VED User manual

Operating and installation instructions
EXP
VED

For the operator
Instructions for use
VED
Electric instantaneous water heater

Table of contents
2Operating instructions for VED electric instantaneous water heater 0020149586_00
Table of contents
1 Notes on the documentation ................................3
1.1 Storing documents.....................................................3
1.3 Applicability of the instructions..............................3
1.4 Identification plate .....................................................3
1.5 CE label .........................................................................3
2 Safety............................................................................4
2.1 Classification of action-related warnings .............4
2.2 Intended use ................................................................4
2.3 General safety information ......................................4
3 Functions and operation.........................................5
4 Energy-saving tips ...................................................6
5 Detecting and rectifying faults............................6
6 Care................................................................................6
7 Maintenance, guarantee and
customer service ......................................................6
8 Recycling and disposal............................................6

Operating instructions for VED electric instantaneous water heater 0020149586_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 documents
>When operating the VED heater, you must also
observe all operating instructions that are included
with other components of your system.
1.1 Storing documents
>Store the enclosed operating instructions and all
other applicable documents in such a way that they
are available whenever required and for any subse-
quent operators of the system.
1.3 Applicability of the instructions
These instructions apply for the following only:
Type designation Article number
VED H 12/7 0010007731
VED H 18/7 0010007732
VED H 21/7 0010007733
VED H 24/7 0010007734
VED H 27/7 0010007735
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 H 18/7
21093500200752100006000000N3
18 kW; 400 V 3~ 50Hz
1MPa (10bar); p 15 >= 900 Ohm cm; IP 25
Observe operating- and installation manual
Appliance 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

4Operating instructions for VED electric instantaneous water heater 0020149586_00
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
aDanger! Imminent danger to life
or risk of severe
personal injury
eDanger! Risk of death from
electric shock
aWarning. Risk of minor personal
injury
bCaution. Risk of material or environmen-
tal damage
Tab. 2.1 Meaning of warning symbols and signal words
2.2 Intended use
Vaillant VED electric instantaneous water heaters have
been constructed using state-of-the-art technology in
accordance with the recognised safety rules and regula-
tions. Nevertheless, there is still a risk of death or seri-
ous injury to the user or others or of damage 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.
The Vaillant VED electric instantaneous water heater
must only be used to heat up drinking water. The Vaillant
VED electric instantaneous water heaters are suitable
for use only in an enclosed, frost-free room in a domes-
tic environment. The Vaillant VED 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
Assembly and settings
All work involved in the installation, set-up, maintenance
and repair of the VED electric instantaneous water
heater must only be carried out by an approved heating
specialist company, who also assumes the responsibility
for installing the unit properly and commissioning it for
the first time.The VED electric instantaneous water
heater must be installed in strict compliance with these
installation 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 VED 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 a 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 a VED electric instantaneous water
heater, be aware of the risk of scalding from high out-
let temperatures.
>There is a particular risk of scalding whenever your
VED is set to stage II.
>In normal operating mode, set the output selector on
your VED to stage I to avoid scalding.
2 Safety

Operating instructions for VED electric instantaneous water heater 0020149586_00 5
Material damage inside the unit caused by poor
quality water
A VED electric instantaneous water heater must only be
used to heat up drinking water. This potable water must
meet the specific German or Austrian 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 a VED 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 VED electric instantaneous water
heater is installed in a permanently frost-free room.
Material damage to the unit caused by changes
No changes must be made to your VED.
In the event of a fault
>If your VED is not producing hot water or if any other
fault occurs, inform an approved heating specialist
company.
>If the VED ever malfunctions, inform your heating
specialist company.
>Do not carry out any repairs yourself.
>Do not open the unit cover under any circumstances.
3 Functions and operation
If you turn on the hot water at a draw-off point (mixer or
separate tap), your VED will automatically warm up the
drinking water.
aDanger!
Risk of being scalded by hot water.
The water temperature at the draw-off points
can reach 60°C.
>When using a VED electric instantaneous
water heater, be aware of the risk of scald-
ing from high outlet temperatures.
>There is a particular risk of scalding when-
ever your VED is set to stage II.
>In normal operating mode, set the output
selector on your VED to stage I to avoid
scalding
Fig. 3.1 Output selector
>Set the output selector to stage I or stage II.
– If the output selector is set to stage I, your VED is
in partial load operation. If the output selector is
set to stage II, your VED is in full load operation.
– For more information on the possible hot water
temperatures, refer to the "Technical Data" section
of the installation instructions.
Also take note of the following:
– The desired temperature may not be reached when
drawing large volumes in cold weather.
>If this occurs, briefly set the output selector to stage
II or reduce the water volume being drawn. In both
cases, the water temperature will increase very
quickly.
Safety 2
Function and operation 3

6Operating instructions for VED electric instantaneous water heater 0020149586_00
4 Energy-saving tips
You can help to save energy by following the tips and
advice below:
Appropriate hot water temperature
The 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:
>Set your VED to stage I in normal operating mode.
>Briefly set the output selector to stage II in special
cases where you need more hot water than stage I is
able to provide. After using the hot water, remember
to set the output selector back to stage I.
5 Detecting and rectifying faults
eDanger!
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 an
approved heating specialist company
immediately.
6 Care
There is no need to care for your Vaillant VED 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.
iDo 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 electric
instantaneous water heater require annual inspections
and maintenance work to be carried out by a competent
person.
aDanger!
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.
bCaution.
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
CaCO3mmol/l) or very hard water (more than
20 °dH = 3.6 CaCO3mmol/l), a significantly
more frequent maintenance interval may be
required.
>Have your VED 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.
4 Energy-saving tips, 5 Detecting and rectifying faults, 6 Care
7 Maintenance, guarantee and customer service 8 Recycling and disposal

VED
Electric instantaneous water heater
For the competent person
Installation instructions

Table of contents
2Installation instructions for VED electric instantaneous water heater 0020149586_00
Table of contents
1 Notes on the documentation ................................3
1.1 Observing other applicable documents............3
1.2 Storing documents.....................................................3
1.4 Applicability of the instructions..............................3
1.5 CE label .........................................................................3
2 Safety............................................................................4
2.1 Safety and warning information .............................4
2.2 Intended use ................................................................4
2.3 General safety information ......................................4
3 Equipment and functional description...............6
3.1 Overview .......................................................................6
3.2 Function.........................................................................6
4 Installation..................................................................6
4.1 Scope of delivery........................................................6
4.2 Installation site............................................................ 7
4.3 Required minimum clearances ................................ 7
4.4 Mounting the unit to the wall ..................................8
4.5 Connecting the hot and cold water...................... 10
4.6 Connecting the unit to the electricity supply.....12
5 Starting up/decommissioning..............................13
5.1 Purging the unit.........................................................13
5.2 Fitting the unit cladding...........................................13
5.3 Checking the system's functionality .....................14
5.4 Decommissioning.......................................................14
6 Handing over to the operator ..............................14
7 Replacement parts and accessories .................14
8 Detecting and rectifying faults...........................15
9 Inspection and maintenance................................16
10 Technical data ...........................................................17