Vaillant ecoTEC sustain 24 User manual

Operating instructions
ecoTEC sustain
24, 28, 34
GB
Operating instructions
Publisher/manufacturer
Vaillant GmbH
Berghauser Str. 40 D-42859 Remscheid
Tel. [phone]‑0 Fax [phone]‑2810
[email protected] www.vaillant.de

Contents
2Operating instructions ecoTEC sustain 0020253095_01
Contents
1 Safety ............................................ 3
1.1 Action-related warnings ................. 3
1.2 Intended use .................................. 3
1.3 General safety information............. 4
2 Notes on the documentation ...... 7
2.1 Observing other applicable
documents ..................................... 7
2.2 Storing documents......................... 7
2.3 Validity of the instructions .............. 7
3 Product description..................... 7
3.1 Product design............................... 7
3.2 Control elements............................ 7
3.3 Description of the display............... 8
3.4 Information on the identification
plate ............................................... 8
3.5 Serial number ................................ 9
3.6 CE label ......................................... 9
3.7 Energy Saving Trust Endorsed
Products......................................... 9
4 Function...................................... 10
4.1 Operating concept ....................... 10
4.2 Opening the isolator devices ....... 11
4.3 Switching on the product ............. 11
4.4 Setting the heating flow
temperature ................................. 11
4.5 Setting the hot water
temperature ................................. 11
4.6 Switching off the product's
functions ...................................... 12
4.7 Guaranteeing the correct filling
pressure in the heating circuit...... 12
4.8 Switching the product to
standby mode .............................. 13
4.9 Protecting the heating
installation against frost ............... 14
5 Troubleshooting ........................ 14
5.1 Detecting and rectifying faults...... 14
5.2 Displaying the status codes ......... 14
6 Care and maintenance .............. 14
6.1 Maintenance ................................ 14
6.2 Caring for the product .................. 14
6.3 Reading maintenance
messages .................................... 15
6.4 Checking the condensate drain
pipework and tundish................... 15
7 Decommissioning...................... 15
7.1 Temporarily decommissioning
the product................................... 15
7.2 Permanently decommissioning
the product................................... 15
8 Recycling and disposal............. 15
9 Guarantee and customer
service ........................................ 16
9.1 Guarantee.................................... 16
9.2 Customer service......................... 16
Appendix ............................................... 17
A Operator level –overview ......... 17
B Status codes –Overview........... 17
C Troubleshooting and fault
elimination.................................. 18
C.1 Troubleshooting ........................... 18
C.2 Rectifying faults ........................... 18

Safety 1
0020253095_01 ecoTEC sustain Operating instructions 3
1 Safety
1.1 Action-related warnings
Classification of action-re-
lated warnings
The action-related warnings
are classified in accordance
with the severity of the pos-
sible danger using the following
warning signs and signal words:
Warning symbols and signal
words
Danger!
Imminent danger to life
or risk of severe personal
injury
Danger!
Risk of death from electric
shock
Warning.
Risk of minor personal
injury
Caution.
Risk of material or envir-
onmental damage
1.2 Intended use
There is a risk of injury or death
to the user or others, or of dam-
age to the product and other
property in the event of im-
proper use or use for which it
is not intended.
The product is intended as a
heat generator for closed heat-
ing installations and for hot wa-
ter generation.
Intended use includes the fol-
lowing:
–observance of the operating
instructions included for the
product and any other system
components
–compliance with all inspection
and maintenance conditions
listed in the instructions.
This product can be used by
children aged from 8 years
and above and persons with
reduced physical, sensory or
mental capabilities or lack of
experience and knowledge if
they have been given supervi-
sion or instruction concerning
use of the product in a safe way
and understand the hazards in-
volved. Children must not play
with the product. Cleaning and
user maintenance work must
not be carried out by children
unless they are supervised.
Any other use that is not spe-
cified in these instructions, or
use beyond that specified in this
document shall be considered
improper use. Any direct com-
mercial or industrial use is also
deemed to be improper.
Caution.
Improper use of any kind is
prohibited.

1 Safety
4Operating instructions ecoTEC sustain 0020253095_01
1.3 General safety
information
1.3.1 Danger caused by
improper operation
Improper operation may present
a danger to you and others, and
cause material damage.
▶Carefully read the enclosed
instructions and all other ap-
plicable documents, particu-
larly the "Safety" section and
the warnings.
▶Only carry out the activities
for which instructions are
provided in these operating
instructions.
1.3.2 Risk of death from
escaping gas
What to do if you smell gas in
the building:
▶Avoid rooms that smell of
gas.
▶If possible, open doors and
windows fully and ensure
adequate ventilation.
▶Do not use naked flames (e.g.
lighters, matches).
▶Do not smoke.
▶Do not use any electrical
switches, mains plugs, door-
bells, telephones or other
communication systems in
the building.
▶If it is safe to do so, close the
emergency control valve or
the main isolator.
▶If possible, close the gas isol-
ator cock on the product.
▶Warn other occupants in the
building by yelling or banging
on doors or walls.
▶Leave the building immedi-
ately and ensure that others
do not enter the building.
▶Notify the gas supply com-
pany or the National Grid
[phone] by tele-
phone once you are outside
of the building.
1.3.3 Risk of death due to a
blocked or leaking flue
gas pipe
What to do if you smell flue gas
in the property:
▶Open all accessible doors
and windows fully to provide
ventilation.
▶Switch off the product.
▶Inform a competent person.
1.3.4 Risk of death due to
explosive and flammable
materials
▶Do not use or store explosive
or flammable materials (e.g.
petrol, paper, paint) in the in-
stallation room of the product.

Safety 1
0020253095_01 ecoTEC sustain Operating instructions 5
1.3.5 Risk of death due
to changes to the
product or the product
environment
▶Never remove, bridge or
block the safety devices.
▶Do not tamper with any of the
safety devices.
▶Do not damage or remove
any seals on components.
▶Do not make any changes:
–The product itself
–to the gas, air, water and
electricity supplies
–to the entire flue gas install-
ation
–to the entire condensate
drain system
–to the expansion relief valve
–to the drain pipework
–to constructional condi-
tions that may affect the
operational reliability of the
product
1.3.6 Risk of poisoning
caused by insufficient
supply of combustion air
Conditions: Open-flued opera-
tion
▶Ensure that there is a suffi-
cient supply of combustion
air.
1.3.7 Risk of corrosion
damage due to
unsuitable combustion
and room air
Sprays, solvents, chlorinated
cleaning agents, paint, adhes-
ives, ammonia compounds,
dust or similar substances may
lead to corrosion on the product
and in the air/flue pipe.
▶Ensure that the supply of
combustion air is always free
of fluorine, chlorine, sulphur,
dust, etc.
▶Ensure that no chemical sub-
stances are stored at the in-
stallation site.
1.3.8 Risk of material damage
caused by frost
▶Ensure that the heating in-
stallation always remains in
operation during freezing con-
ditions and that all rooms are
sufficiently heated.
▶If you cannot ensure the op-
eration, have a competent
person drain the heating in-
stallation.

1 Safety
6Operating instructions ecoTEC sustain 0020253095_01
1.3.9 Risk of injury and
material damage due to
maintenance and repairs
carried out incorrectly or
not carried out at all
▶Never attempt to carry out
maintenance work or repairs
on your product yourself.
▶Faults and damage should
be immediately rectified by a
competent person.
▶Adhere to the maintenance
intervals specified.

Notes on the documentation 2
0020253095_01 ecoTEC sustain Operating instructions 7
2 Notes on the
documentation
2.1 Observing other applicable
documents
▶You must observe all operating instruc-
tions enclosed with the system compon-
ents.
2.2 Storing documents
▶Keep this manual and all other applic-
able documents safe for future use.
2.3 Validity of the instructions
These instructions apply only to:
Product article number
ecoTEC
sustain 24
VUW 246/7-2
(H-GB) 0010019980
ecoTEC
sustain 28
VUW 286/7-2
(H-GB) 0010019981
ecoTEC
sustain 34
VUW 346/7-2
(H-GB) 0010019982
Gas Council Numbers
ecoTEC
sustain 24
VUW 246/7-2
(H-GB)
47-044-79
ecoTEC
sustain 28
VUW 286/7-2
(H-GB)
47-044-80
ecoTEC
sustain 34
VUW 346/7-2
(H-GB)
47-044-81
3 Product description
3.1 Product design
3
2
1
1 Product
2 Control elements
3 Plate with serial
number on the
rear
3.2 Control elements
3
4
6
5
7
1 2
1 Display
2 On/off button
and reset button
3 Right selection
button
4button
5button
6 Left selection
button
7 Access to the
menu for addi-
tional inform-
ation/installer
level

3 Product description
8Operating instructions ecoTEC sustain 0020253095_01
3.3 Description of the display
1
2
3
1 Operating in-
formation
2 Operating mode,
selecting and
confirming the
operating mode
3 Display showing
the current heat-
ing flow temper-
ature, the filling
pressure in the
heating install-
ation, the oper-
ating mode or a
fault code
Symbol Meaning
Burner operating correctly
–Burner on
Heating installation filling
pressure
–Permanently on: Filling
pressure in the permitted
range
–Flashing: Filling pres-
sure outside the permitted
range, purging function
activated
DHW mode
–Permanently on: Hot wa-
ter activated
–Flashing: Burner on in
draw-off mode
Heating mode
–Permanently on: Heating
mode activated
–Flashing: Burner on in
heating mode
Maintenance required
Information on maintenance
messages in the event of
faults
Setting to be confirmed
Navigating through various
menus
Symbol Meaning
/ / Fault in the product
–Appears instead of the
basic display.
S.XX
Status code
OFF –Heating mode is switched
off (summer mode)
–Hot water handling mode
is switched off (product
with integrated hot water
generation)
–Appears when the
product goes into standby
mode.
3.4 Information on the
identification plate
The identification plate is mounted on the
underside of the product in the factory.
The identification plate keeps record of
the country in which the product is to be
installed.
Information
on the identi-
fication plate
Meaning
Condensing
technology
Efficiency class of the boiler
in accordance with EC Dir-
ective 92/42/EEC
Serial number For quality control purposes;
3rd and 4th digits = year of
production
For quality control purposes;
5th and 6th digits = week of
production
For identification purposes;
7th to 16th digits = product
article number
For quality control purposes;
17th to 20th digits = place of
manufacture
... ecoTEC ... Product designation
Cat. Approved gas category
Type: Xx3(x) Permissible flue gas connec-
tions
2H/2E/3P/
2K...
Gas group and gas connec-
tion pressure as set at the
factory

Product description 3
0020253095_01 ecoTEC sustain Operating instructions 9
Information
on the identi-
fication plate
Meaning
Tmax Max. flow temperature
PMS Maximum water pressure in
heating mode
NOx NOx class for the product
V
Hz
Electric connection
W Max. electrical power con-
sumption
IP Protection class
Code (DSN) Specific product code
Heating mode
Qn Nominal heating load range
in heating mode
Pn Nominal heat output range
in heating mode
Pnc Nominal heat output range
in heating mode (condensing
technology)
Hot water generation
Qnw Nominal heating load range
in hot water handling mode
Pnw Nominal heat output range
in hot water handling mode
D Specific flow rate
PMW Maximum water pressure in
hot water handling mode
Barcode with serial number
GC No. Gas council number
Note
Make absolutely sure that the
product is compatible with the gas
group at the installation site.
3.5 Serial number
The serial number can be found on the
rear of a plastic plate at the bottom of the
front casing and on the identification plate.
3.6 CE label
The CE label shows that the products
comply with the basic requirements of the
applicable directives as stated on the iden-
tification plate.
The declaration of conformity can be
viewed at the manufacturer's site.
3.7 Energy Saving Trust Endorsed
Products
Only the most energy efficient products
can carry the ‘Energy Saving Trust En-
dorsed Product’ brandmark making it easy
for consumers to choose products that
have met strict energy performance cri-
teria.
Available for: Boilers, Heating controls and
chemical inhibitors, the Energy Saving
Trust endorsed product brandmark gives
consumers confidence that a product will
cost less to run, help lower energy bills
and reduce carbon emissions.
About the Energy Saving Trust
Energy Saving Trust is an independent
and impartial organisation that provides
trusted energy saving advice to empower
millions of people to lead affordable, low
energy lifestyles. For more information visit
energysavingtrust.org.uk

4 Function
10 Operating instructions ecoTEC sustain 0020253095_01
4 Function
4.1 Operating concept
The display switches on when you switch
on the product or press a button. You can
now configure settings by pressing the
buttons again.
When you switch the product off using the
on/off button, the display goes out (the
frost protection function is active for as
long as power is supplied).
Button Meaning
–Setting the hot water temperat-
ure
–Cancelling the change to a set
value or activating an operating
mode
–Calling up a higher selection
level in the menu
–Setting the heating flow tem-
perature, filling pressure of the
heating system or activating the
heating mode
–Confirming a set value or activ-
ating an operating mode
–Calling up a lower selection
level in the menu
–Read the system pressure
(press twice)
+–Calling up the additional func-
tions
or –Navigating between individual
menu items
–Increasing or decreasing the
chosen set value
–On/off button (press and hold
the button for < 3 s)
–Reset button (press and hold
the button for > 3 s)
Both selection buttons have a soft key
function, i.e. their function can change.
If, for example, you press the left-hand
selection button in the basic display,
the current function switches from (Do-
mestic hot water temperature) to (Back).
Adjustable values are always displayed as
flashing.
You must always confirm a change to a
value. Only then is the new setting saved.
You can press to cancel a procedure at
any time. If you do not press any buttons
for longer 15 minutes, the display returns
to the basic display.
4.1.1 Basic display
The basic display shows the current
product status.
To return to the basic display, press the
button. If you do not press any buttons
within three minutes, the display becomes
dark and automatically switches back to
the basic display.
If an error message appears, the error
code will be shown on the basic display.
The available functions vary depending on
whether:
–A room thermostat is connected to the
product or not
–A domestic hot water cylinder with tem-
perature sensor is connected to the
product or not
4.1.2 Operating levels
The product has two operating levels:
–The operator level shows the most im-
portant information and offers set-up
options which do not require any special
prior knowledge.
–Specialised knowledge is required in or-
der to use the installer level (access for
competent persons). This is therefore
protected by an access code.