Vaillant ecoTEC plus SERIES User manual

Operating instructions
ecoTEC plus
VU 446/5-5 (H-GB)
VU 606/5-5 (H-GB)
GB, IE, NZ
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 plus 0020261390_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 ...... 8
2.1 Observing other applicable
documents ..................................... 8
2.2 Storing documents......................... 8
2.3 Validity of the instructions .............. 8
2.4 Benchmark..................................... 8
3 Product description..................... 9
3.1 Product design............................... 9
3.2 Displayed symbols......................... 9
3.3 Display ........................................... 9
3.4 Protecting the heating
installation against frost ............... 10
3.5 Data plate .................................... 11
3.6 CE label ....................................... 11
3.7 Energy Saving Trust Endorsed
Products....................................... 11
4 Operation.................................... 12
4.1 Operating concept ....................... 12
4.2 Adjustment and display levels ..... 12
4.3 Basic display................................ 12
4.4 Menu display................................ 13
4.5 Starting up the product ................ 13
4.6 Setting the language.................... 13
4.7 Opening the isolator devices ....... 13
4.8 Setting the heating flow
temperature ................................. 13
4.9 Setting the domestic hot water
temperature ................................. 13
4.10 Switching off the product's
functions ...................................... 14
5 Care and maintenance .............. 14
5.1 Caring for the product .................. 14
5.2 Maintenance ................................ 14
5.3 Draining the heating
installation.................................... 14
5.4 Guaranteeing the correct filling
pressure in the heating circuit...... 14
5.5 Checking the condensate
discharge pipe and tundish.......... 16
6 Troubleshooting ........................ 16
6.1 Reading maintenance
messages .................................... 16
6.2 Eliminating faults.......................... 16
6.3 Eliminating an ignition fault .......... 16
6.4 Displaying the status codes
(Live Monitor)............................... 16
7 Decommissioning...................... 16
7.1 Temporarily decommissioning
the product................................... 16
7.2 Permanently decommissioning
the product................................... 16
8 Recycling and disposal............. 16
9 Guarantee and customer
service ........................................ 17
9.1 Guarantee.................................... 17
9.2 Customer service......................... 17
Appendix ............................................... 18
A End user level –overview ......... 18
B Status codes –Overview........... 18
C Fault codes................................. 19
D Troubleshooting ........................ 19

Safety 1
0020261390_01 ecoTEC plus 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.
This product is a heat gener-
ator that has been specially de-
signed for closed heating in-
stallations.
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 plus 0020261390_01
1.3 General safety
information
1.3.1 Installation by
competent persons only
The installation, inspection,
maintenance and repair of the
product, as well as the gas ratio
settings, must only be carried
out by a competent person.
1.3.2 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.
1.3.3 Risk of death from
escaping gas
Applicability: Except Great
Britain, Except Ireland
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.
▶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.
▶Alert the police and fire bri-
gade as soon as you are out-
side the building.
▶Use a telephone outside the
building to inform the emer-
gency service department of
the gas supply company.
1.3.4 Risk of death from
escaping gas
Applicability: Great Britain
OR Ireland
What to do if you smell gas in
the building:
▶Avoid rooms that smell of
gas.

Safety 1
0020261390_01 ecoTEC plus Operating instructions 5
▶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.
1.3.5 Risk of death due to
blocked or leaking flue
pipework
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.
1.3.6 Risk of death due to
explosive and flammable
materials
▶Do not use the product in
storage rooms that contain
explosive or flammable sub-
stances (such as petrol, pa-
per or paint).
1.3.7 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 Safety
6Operating instructions ecoTEC plus 0020261390_01
1.3.8 Risk of death due to
cabinet-type casing
Cabinet-type casing can give
rise to dangerous situations
when used on a product which
is operated with an open flue.
▶Ensure that the product is
supplied with sufficient com-
bustion air.
1.3.9 Risk of poisoning
caused by insufficient
combustion air supply
Conditions: Open-flued opera-
tion
▶Ensure that there is a suffi-
cient combustion air supply.
1.3.10 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.
1.3.11 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.
1.3.12 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.
1.3.13 Starting up the product
▶Only start up the product
once the casing has been
completely closed.
1.3.14 Risk of material
damage
The product's casing is not
designed to withstand loads.
There is a risk that it will be-

Safety 1
0020261390_01 ecoTEC plus Operating instructions 7
come deformed due to the ef-
fect of bearing weight.
▶Do not place any objects on
the product.

2 Notes on the documentation
8Operating instructions ecoTEC plus 0020261390_01
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
VU 446/5-5 (H-GB)
ecoTEC plus 0010021520
VU 606/5-5 (H-GB)
ecoTEC plus 0010021521
Gas Council Number
VU 446/5-5 (H-GB)
ecoTEC plus 41-694-28
VU 606/5-5 (H-GB)
ecoTEC plus 41-694-29
2.4 Benchmark
Applicability: Great Britain
Vaillant is a licensed member of the
Benchmark Scheme which aims to im-
prove the standards of installation and
commissioning of domestic heating and
hot water systems in the UK and to en-
courage regular servicing to optimise
safety, efficiency and performance.
Benchmark is managed and promoted
by the Heating and Hotwater Industry
Council. For more information visit
www.benchmark.org.uk.
▶Please ensure that the installer has fully
completed the Benchmark Checklist on
the inside back pages of the installation
instructions supplied with the product
and that you have signed it to say that
you have received a full and clear ex-
planation of its operation. The installer
is legally required to complete a com-
missioning checklist as a means of
complying with the appropriate Build-
ing Regulations (England and Wales).
All installations must be notified to Local
Area Building Control either directly or
through a Competent Persons Scheme.
A Building Regulations Compliance Certi-
ficate will then be issued to the customer
who should, on receipt, write the Notifica-
tion Number on the Benchmark Checklist.
This product should be serviced regularly
to optimise its safety, efficiency and per-
formance. The service engineer should
complete the relevant Service Record on
the Benchmark Checklist after each ser-
vice.
The Benchmark Checklist will be required
in the event of any warranty.

Product description 3
0020261390_01 ecoTEC plus Operating instructions 9
3 Product description
3.1 Product design
1
2
3
4
1 Plate with serial
number on the
rear
2 On and off but-
ton
3 Operator control
element
4 Installation loca-
tion for the op-
tional control
system
3.2 Displayed symbols
50
F.01
3
4
1
2
3
4
5
6
7
8
1 Display
2 Access to the
menu for addi-
tional information
3 Right selection
button
4button
5 Reset button
6 Chimney sweep
mode (for chim-
ney sweeps)
7button
8 Left selection
button
3.3 Display
50
F.01 1
2
3
6
5
4
1 Heating installa-
tion filling pres-
sure
2 Current heating
flow temperat-
ure, additional
information
3 Current assign-
ment of the right-
hand selection
button

3 Product description
10 Operating instructions ecoTEC plus 0020261390_01
4 Current assign-
ment of the left-
hand selection
button
5 Active operating
mode
6 Burner informa-
tion
Sym-
bol
Meaning Explanation
Burner operating
correctly
Burner on
bar
Current filling
pressure of the
heating installa-
tion
The dashed lines
show the permit-
ted range.
–Permanently
on: Filling
pressure in
the permitted
range
–Flashing:
Filling pres-
sure outside
the permitted
range
Domestic hot wa-
ter generation
active
–Permanently
on: Draw-off
mode before
burner is on
–Flashing:
Burner on in
draw-off mode
Heating mode
active
–Permanently
on: Heat de-
mand in heat-
ing mode
–Flashing:
Burner on in
heating mode
Maintenance re-
quired
Information on
the maintenance
message in the
"Live Monitor"
Summer mode
active
Heating mode is
switched off
Burner anti-cyc-
ling time is active
To avoid the
need for frequent
switching on and
off (increases the
product's service
life).
Sym-
bol
Meaning Explanation
F. X X
Fault in the
product
Appears instead
of the basic
display, may be
an explanatory
plain text display.
3.4 Protecting the heating
installation against frost
3.4.1 Frost protection function
Caution.
Risk of material damage due
to frost.
The frost protection function
cannot guarantee circulation
through the entire heating in-
stallation. Under certain circum-
stances, there is therefore a risk
of frost to certain parts of the
heating installation, which may
cause damage.
▶During a period of frost, en-
sure that the heating installa-
tion remains in operation and
that all rooms are sufficiently
heated, even when you are
away.
Note
To ensure that the frost protection
devices remain ready for operation,
the boiler must be switched on.
If the heating flow temperature falls below
5 °C when the on/off button is switched
on, the product starts up and heats the
circulating water on the heating side to
approx. 30 °C.