Vaillant | ecoTEC pro 24 & 28 | Installation manual | Vaillant ecoTEC pro 24 & 28 Installation Manual

Vaillant ecoTEC pro 24 & 28 Installation Manual
Installation and maintenance instructions
ecoTEC pro
VUW ..6/5-3
GB, IE
Publisher/manufacturer
Vaillant GmbH
Berghauser Str. 40
D-42859 Remscheid
Tel. +49 21 91 18‑0
Fax +49 21 91 18‑2810
info@vaillant.de
www.vaillant.de
Contents
Contents
7.5
Preventing low water pressure ............................ 19
7.6
Flushing the heating installation for the first
time ("cold") ......................................................... 19
1
Safety .................................................................... 4
1.1
Action-related warnings ......................................... 4
7.7
Filling the heating installation .............................. 19
1.2
Intended use .......................................................... 4
7.8
Purging the heating installation ........................... 20
1.3
General safety information .................................... 4
7.9
Filling and purging the hot water system ............. 20
1.4
Related documents................................................ 6
7.10
Filling the condensate trap .................................. 20
1.5
Related documents................................................ 7
7.11
Gas inspection ..................................................... 20
2
Notes on the documentation .............................. 8
7.12
Checking leak-tightness ...................................... 22
2.1
Observing other applicable documents ................. 8
7.13
2.2
Storing documents................................................. 8
Thoroughly flushing the heating installation
("hot")................................................................... 22
2.3
Applicability of the instructions .............................. 8
8
2.4
Benchmark............................................................. 8
Adapting the unit to the heating
installation.......................................................... 23
3
Product description............................................. 8
8.1
Calling up diagnostics codes ............................... 23
3.1
Product design....................................................... 8
8.2
Burner anti-cycling time ....................................... 23
3.2
Information on the identification plate.................... 8
8.3
Setting the maintenance interval ......................... 23
3.3
Serial number ........................................................ 9
8.4
Setting the pump output....................................... 24
3.4
CE label ................................................................. 9
8.5
Setting the bypass valve...................................... 24
3.5
Energy Saving Trust Endorsed Products .............. 9
8.6
Handing the product over to the operator............ 24
3.6
Hot Water Association ........................................... 9
9
Troubleshooting ................................................ 25
4
Set-up.................................................................... 9
9.1
Checking service messages ................................ 25
4.1
Unpacking the product........................................... 9
9.2
Eliminating faults.................................................. 25
4.2
Checking the scope of delivery.............................. 9
9.3
Calling up and clearing the fault memory ............ 25
4.3
Transporting the product ..................................... 10
9.4
Resetting parameters to factory settings ............. 25
4.4
Dimensions .......................................................... 10
9.5
Preparing the repair work .................................... 25
4.5
Minimum clearances............................................ 11
9.6
Replacing defective components......................... 25
4.6
Using the installation template............................. 11
9.7
Completing repair work........................................ 27
4.7
Wall-mounting the product................................... 11
9.8
Checking the product for leak-tightness .............. 27
4.8
Removing the front casing ................................... 11
10
Inspection and maintenance ............................ 27
4.9
Removing the side section .................................. 12
10.1
Removing the compact thermal module .............. 28
5
Installation.......................................................... 12
10.2
Cleaning the heat exchanger............................... 28
5.1
Installation requirements ..................................... 12
10.3
Checking the burner ............................................ 29
5.2
Installing the gas connection ............................... 13
10.4
Cleaning the condensate trap.............................. 29
5.3
Checking the gas line for leak-tightness.............. 13
10.5
Cleaning the filter in the cold water inlet.............. 29
5.4
Installing the hot and cold water connection........ 13
10.6
Installing the compact thermal module ................ 29
5.5
Connecting the heating flow and heating
return ................................................................... 13
10.7
Draining the product ............................................ 30
10.8
5.6
Connecting the condensate drain pipework ........ 14
Checking the pre-charge pressure for the
internal expansion vessel .................................... 30
5.7
Installing the discharge pipe on the expansion
relief valve............................................................ 14
10.9
Completing inspection and maintenance work .... 30
10.10
Checking the product for leak-tightness .............. 30
5.8
Flue installation.................................................... 14
11
Decommissioning.............................................. 30
5.9
Electrical installation ............................................ 15
11.1
Temporarily decommissioning the product.......... 30
6
Operation............................................................ 17
11.2
Decommissioning the product ............................. 30
6.1
Operating concept ............................................... 17
12
Recycling and disposal..................................... 30
6.2
Installer level overview......................................... 17
13
Customer service............................................... 30
6.3
Calling up the installer level ................................. 17
6.4
Live Monitor (status codes) ................................. 17
6.5
Setting the hot water temperature ....................... 18
7
Start-up ............................................................... 18
7.1
Carrying out the initial start-up............................. 18
7.2
Switching the product on and off ......................... 18
7.3
Using check programmes .................................... 18
7.4
Checking and treating the heating water/filling
and supplementary water .................................... 18
2
Appendix ............................................................................ 31
A
Overview of diagnostics codes ........................ 31
B
Status codes – Overview .................................. 35
C
Overview of fault codes .................................... 36
D
Check programmes – Overview ....................... 38
E
Wiring diagrams................................................. 39
E.1
Product connection diagram with integrated
hot water generation ............................................ 39
F
Inspection and maintenance work ................... 40
Installation and maintenance instructions ecoTEC pro 0020244995_02
Contents
G
Commissioning Checklist................................. 41
H
Opening of the flue pipe.................................... 45
H.1
Positioning of the opening of a fan-supported
flue gas pipe ........................................................ 45
I
Horizontal terminal positioning........................ 46
J
Opening of the flue pipe below eaves and
balconies ............................................................ 46
K
Technical data.................................................... 47
Index ................................................................................... 50
0020244995_02 ecoTEC pro Installation and maintenance instructions
3
1 Safety
1
1.1
Safety
Action-related warnings
Classification of action-related warnings
The action-related warnings are classified in
accordance with the severity of the possible
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 environmental
damage
1.2
Intended use
There is a risk of injury or death to the user or
others, or of damage to the product and other
property in the event of improper use or use
for which it is not intended.
The product is intended as a heat generator
for closed heating installations and for hot
water generation.
Depending on the gas-fired boiler type, the
products referred to in these instructions
must only be installed and operated in conjunction with the air/flue pipe accessories listed in the other applicable documents.
Intended use includes the following:
– observance of accompanying operating,
installation and servicing instructions for
the product and any other system components
– installing and fitting the product in accordance with the product and system approval
– compliance with all inspection and maintenance conditions listed in the instructions.
Intended use also covers installation in accordance with the IP code.
Any other use that is not specified in these
instructions, or use beyond that specified in
4
this document shall be considered improper
use. Any direct commercial or industrial use
is also deemed to be improper.
Caution.
Improper use of any kind is prohibited.
1.3
General safety information
1.3.1 Risk caused by inadequate
qualifications
The following work must only be carried out
by competent persons who are sufficiently
qualified to do so:
–
–
–
–
–
–
–
Set-up
Dismantling
Installation
Start-up
Inspection and maintenance
Repair
Decommissioning
▶ Observe all instructions that are included
with the product.
▶ Proceed in accordance with current technology.
▶ Observe all applicable directives, standards, laws and other regulations.
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, doorbells, 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 isolator cock on
the product.
▶ Warn other occupants in the building by
yelling or banging on doors or walls.
▶ Leave the building immediately and ensure
that others do not enter the building.
▶ Notify the gas supply company or the National Grid +44 (0) 800 111999 by tele-
Installation and maintenance instructions ecoTEC pro 0020244995_02
Safety 1
phone once you are outside of the building.
1.3.3 Risk of death from leaks if the
product is installed below ground
level
▶ Ensure that the product is supplied with
sufficient combustion air.
1.3.8 Risk of poisoning caused by
insufficient combustion air supply
Conditions: Open-flued operation
Liquid gas accumulates at floor level. If the
product is installed below ground level, liquid
gas may accumulate at floor level if there
are any leaks. In this case, there is a risk of
explosion.
▶ Ensure that the air supply to the product's
installation room is permanently unobstructed and sufficient in accordance with the
relevant ventilation requirements.
▶ Make sure that liquid gas cannot escape
from the product or the gas line under any
circumstance.
1.3.9 Risk of death due to lack of safety
devices
1.3.4 Risk of death due to blocked or
leaking flue gas routes
The schematic drawings included in this document do not show all safety devices required for correct installation.
Installation errors, damage, tampering, unauthorised installation sites or similar can cause
flue gas to escape and result in a risk of poisoning.
▶ Install the necessary safety devices in the
system.
▶ Observe the applicable national and international laws, standards and guidelines.
What to do if you smell flue gas in the property:
1.3.10 Risk of death from electric shock
▶ Open all accessible doors and windows
fully to provide ventilation.
▶ Switch off the product.
▶ Check the flue gas routes in the product
and the flue gas diversions.
Before commencing work on the product:
1.3.5 Risk of poisoning and burns caused
by escaping hot flue gases
▶ Only operate the product if the air/flue pipe
has been completely installed.
▶ With the exception of short periods for
testing purposes, only operate the product
when the front casing is installed and
closed.
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 substances (such as petrol, paper or paint).
1.3.7 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.
0020244995_02 ecoTEC pro Installation and maintenance instructions
There is a risk of death from electric shock if
you touch live components.
▶ Disconnect the product from the power
supply by switching off all power supplies
at all poles (electrical partition with a contact gap of at least 3 mm, e.g. fuse or circuit breaker).
▶ Secure against being switched back on
again.
▶ Check that there is no voltage.
1.3.11 Risk of being burned or scalded by
hot components
▶ Only carry out work on these components
once they have cooled down.
1.3.12 Risk of death from escaping flue
gas
If you operate the product with an empty condensate trap / siphon, then flue gas may escape into the room air.
▶ In order to operate the product, ensure that
the condensate trap / siphon is always full.
5
1 Safety
1.3.13 Risk of material damage caused by
using an unsuitable tool
themselves and others with regard to manual
handling and working at height requirements.
▶ Use the correct tool to tighten or loosen
threaded connections.
During the appliance installation (and any
subsequent work, such as, the replacement
of major parts ) it will be necessary to employ caution. All installers and operatives involved from unloading the appliance until it is
fully mounted on the wall in its final installed
location must exercise full duty of care for
themselves and others with regard to safety.
When lifting and handling this appliance, operatives should employ assistance. In certain
situations it may be necessary to use mechanical handling aids. Take care to avoid trip
hazards, slippery or wet surfaces.
1.3.14 Risk of material damage caused by
frost
▶ Do not install the product in rooms prone
to frost.
1.3.15 Risk of corrosion damage due to
unsuitable combustion and room
air
Sprays, solvents, chlorinated cleaning
agents, paint, adhesives, ammonia compounds, dust or similar substances may lead
to corrosion on the product and in the flue
gas guiding.
▶ Ensure that the supply of combustion air is
always free of fluorine, chlorine, sulphur,
dust, etc.
▶ Ensure that no chemical substances are
stored at the installation site.
▶ If you are installing the product in
hairdressing salons, painter's or joiner's
workshops, cleaning businesses or similar
locations, choose a separate installation
room in which the room air is technically
free of chemical substances.
1.4
Related documents
Installation and maintenance of the boiler
must only be performed by a competent person with valid accreditation from the Health
and Safety Executive in accordance with the
"Gas Safety (Installation and Use) Regulations 1998" (hereinafter abbreviated to "competent person" or "heating specialist company"). The existing regulations, rules and
guidelines must be observed when doing so.
Any special requirements of Local Authorities, gas undertakings or insurers must be
complied with. The competent person is also
responsible for inspection, maintenance and
repairs to the boiler, and for checking gas
volume setting and flue gas analysis.
Installers shall carryout a full site risk assessment and put into place all necessary
steps and procedures to comply with Health
and safety at work act and ensure safety of
6
Employers and installers should refer
to the HSE web site for full advice and
manual handling assessment charts
(MAC) tool.
In addition where no specific instructions are
given then reference shall be made, but not
restricted to, all applicable and relevant British Standards and codes of practice such as
the following:
– Gas Safety (Installation and Use) regulations.
– All current Building Regulations for England, Northern Ireland and Wales, (as
amended). This includes Approved Codes
of Practice and approved documents and
guidance for building regulations. (A to P
and 7)
– The Building Standards, Scotland, and
any requirements determined by the local
authorities within.
– The Health and safety at work act
– COSHH Control of Substances Hazardous
to Health.
– BS 7671 Requirements for electrical installations. IEE Wiring Regulations
– The Electricity at Work Regulations.
– The Water supply (water fittings) regulations 1999.
– Water bylaws 2000 (Scotland)
– BS 5854 Code of practice for flues and flue
structures in buildings.
– BS EN 12828 Design of water-based heating systems.
– BS EN 806 Parts 1 - 5.
Installation and maintenance instructions ecoTEC pro 0020244995_02
Safety 1
– BS 8558 Guide to the design, installation,
testing and maintenance of services supplying water for domestic use within buildings and their curtilages.
– BS 6880 Code of practice for low temperature heating systems with outputs above
45 kW, Part 1, 2, and 3.
– BS 6891 Installation of low pressure gas
pipe work of up to 35mm in domestic
premises.
– BS 4814 Specification for: Expansion
vessels using an internal diaphragm, for
sealed hot water and heating systems.
– BS 7074 Application, selection and installation of expansion vessels and ancillary
equipment for sealed water systems., Part
1 and 2.
– BS 7593 Code of practice for treatment of
water in domestic hot water central heating
systems.
– BS 12831 Heating systems in buildings.
Method for calculating design heat load.
– BS EN 13831 Closed expansion vessels
with built in diaphragm.
– EN 14336 Heating systems in buildings.
Installation and commissioning of water
based heating systems.
– BS 5440 – 1 Installation of flues and ventilation for gas appliances of rated input not
exceeding 70kW*
– BS 5440 – 2 Flueing and ventilation for gas
appliances of rated input not exceeding
70kW*
* 1st 2nd and 3rd family gases.
– BS 5449 Forced circulation hot water systems up to 45kW.
– BS EN 6798 Installation & maintenance of
gas fired hot water boilers of rated input
not exceeding 70kW net.
– BS 5482 - Part 1 Domestic butane and
propane gas burning installations
– BS 6644 Installation of gas boilers
between 60 kW and 2 MW (2nd and 3rd
family gases)
– BS 5449
– IGE/UP/1 (Edition 2) Strength testing,
tightness testing and direct purging of industrial and commercial gas installations.
– IGE/UP/1A (Edition 2) Strength testing,
tightness testing and direct purging of
small, low pressure industrial and commercial natural gas installations.
– IGE/UP/10 Installation of gas appliances
in industrial and commercial premises.
Part 1 Flued appliances.
– The installation must comply with the current version of the Clean Air Act.
1.5
–
–
–
–
Related documents
I.S. 813 Domestic Gas Installations
I.S. 820 Non Domestic Gas Installations
Building Control Act 2007
ETCI Regulations for installing electrical
systems
Institute of Gas Engineers Publications:
– IGE/UP/1B (Edition 2) Tightness testing
and direct purging of small natural gas
installations.
– IGE/UP/ 7 (Edition 2) Gas in timber and
light steel framed buildings.
Additionally for gas boilers systems with outputs greater than 70KW.
0020244995_02 ecoTEC pro Installation and maintenance instructions
7
2 Notes on the documentation
2
2.1
▶
2.2
▶
Notes on the documentation
Observing other applicable documents
You must observe all the operating and installation instructions included with the system components.
3
Product description
3.1
Product design
3.1.1
Functional elements, product with
integrated hot water generation
Storing documents
5
4
Pass these instructions and all other applicable documents on to the system operator.
6
7
2.3
Applicability of the instructions
3
These instructions apply only to:
8
9
Product article number
Article number
Gas Council
Number
VUW 246/5-3 (H-GB)
ecoTEC pro 24
0010021836
47-044-88
VUW 286/5-3 (H-GB)
ecoTEC pro 28
0010021837
47-044-89
VUW 286/5-3 (P-GB)
ecoTEC pro 28
0010021838
47-044-90
2.4
Benchmark
Vaillant is a licensed member of the Benchmark Scheme.
Benchmark places responsibilities on both manufacturers
and installers. The purpose is to ensure that customers are
provided with the correct equipment for their needs, that it is
installed, commissioned and serviced in accordance with the
manufacturer’s instructions by a competent person approved
at the time by the Health and Safety Executive and that it
meets the requirements of the appropriate Building Regulations. The Benchmark Checklist can be used to demonstrate compliance with Building Regulations and should be
provided to the customer for future reference.
Installers are required to carry out installation, commissioning and servicing work in accordance with the Benchmark
Code of Practice which is available from the Heating and
Hotwater Industry Council who manage and promote the
Scheme.
Benchmark is managed and promoted by the Heating and
Hotwater Industry Council.
10
11
2
12
1
13
14
19
15
18
17
16
1
Gas valve
11
Automatic air vent
2
Water pressure sensor
12
Pressure gauge
3
Heat exchanger
13
Internal pump
4
14
Diverter valve
5
Connection for the flue
pipe
Flue gas analysis point
15
Expansion relief valve
6
Expansion vessel
16
Electronics box
7
Air intake pipe
17
8
9
Compact thermal
module
Ignition electrode
Impeller sensor (hot
water)
Bypass valve
10
Fan
3.2
For more information visit www.centralheating.co.uk
18
19
Secondary heat exchanger
Information on the identification plate
The identification plate is mounted on the underside of the
product in the factory.
Information on the
data plate
Meaning
Read the instructions.
8
VUW…
Vaillant gas-fired wall-hung boiler for
heating and domestic hot water generation
..6/5-3
Gross calorific value power/product
generation equipment
Installation and maintenance instructions ecoTEC pro 0020244995_02
Set-up 4
Information on the
data plate
Meaning
ecoTEC pro
Product designation
2H, G20 – 20 mbar
(2.0 kPa)
Gas group and gas connection pressure
as set at the factory
ww/yyyy
Date of manufacture: Week/year
Cat.
Permissible gas categories
Types
Approved gas-fired units
PMS
Permissible total overpressure in heating
mode
PMW
Permissible total overpressure during
domestic hot water generation
Tmax.
Max. flow temperature
ED 92/42
Current efficiency directive fulfilled with
4* rating
V Hz
Mains voltage and mains frequency
W
Max. electrical power consumption
IP
IP rating
Heating mode
Domestic hot water generation
P
Nominal heat output range
Q
Heat input range
D
Nominal domestic hot water draw-off rate
3.5
Energy Saving Trust Endorsed Products
Only the most energy efficient products can carry the
‘Energy Saving Trust Endorsed Product’ brandmark making
it easy for consumers to choose products that have met strict
energy performance criteria.
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
3.6
Hot Water Association
Vaillant is a full member of the Hot Water Association and
promotes the scheme in association with its cylinder range.
Details are available on the web site www.vaillant.co.uk
Barcode with serial number,
7th to 16th digit = product article number
Note
Make absolutely sure that the product is compatible with the gas group at the installation site.
3.3
Serial number
The serial number can be found on a plastic label at the bottom of the front casing and on the identification plate.
3.4
CE label
4
Set-up
4.1
1.
2.
Unpacking the product
Remove the product from its box.
Remove the protective film from all parts of the product.
4.2
▶
Checking the scope of delivery
Check that the scope of delivery is complete and intact.
4.2.1
Scope of delivery
The CE label shows that the products comply with the basic
requirements of the applicable directives as stated on the
identification plate.
Number
1
Heat generator
The declaration of conformity can be viewed at the manufacturer's site.
1
Installation kit containing the following:
1
- Product retainer
1
- Expansion relief valve connector
1
- Hot water connector
4
- Service valve
3
- Bag with small parts
1
Installation template
0020244995_02 ecoTEC pro Installation and maintenance instructions
Description
1
Condensate drain hose
1
Enclosed documentation
9
4 Set-up
Transporting the product
4.3.1
General
▶
4.3.2
▶
▶
▶
▶
▶
▶
▶
▶
12
338
7
11
Unloading the box from the delivery van
10
440
It is recommended that two people lift the unit together.
Lift the box using the straps provided.
Use safe lifting techniques – keep your back straight and
bend your legs at the knee.
Hold the load as close as possible to your body.
If the unit is being lifted by two persons, ensure your
movements are coordinated during lifting.
If required, get somebody to assist you in this.
4.3.3
6
5
125
▶
4
A
▶
3
1
2
Transporting the box from the delivery
point to the installation site – ground floor
It is recommended that two people lift the unit together.
Use safe lifting techniques – keep your back straight and
bend your legs at the knee.
624
▶
Dimensions
Hold the load as close as possible to your body. Do not
twist your body – instead, reposition your feet.
If the unit is being lifted by two persons, ensure your
movements are coordinated during lifting.
Avoid bending your upper body – do not lean forwards or
to the side.
Wear appropriate cut-resistant and non-slip gloves to
protect yourself against sharp edges and maintain a safe
and secure grip.
If required, get somebody to assist you in this.
720
▶
4.4
180
4.3
35
35
100
160
20
3
4
5
6
7
100
8
125
188
9
1
Flue pipe wall duct
2
Product holder
3
Heating flow (22 × 1.5
diameter)
Hot water connection
(15 × 1.5 diameter)
Gas connection
(15 × 1.5 diameter)
Cold water connection
(15 × 1.5 diameter)
Heating return (22 × 1.5
diameter)
4
5
6
7
10
8
9
10
11
12
R1 tundish/condensate
trap connection
Flue pipe connection
Condensate discharge
connection, 19 mm
diameter
Condensate trap
Drain line/heating expansion relief valve
connection, 15 mm diameter
Installation and maintenance instructions ecoTEC pro 0020244995_02
Set-up 4
Consult the installation template that is supplied to find the
dimension A.
4.5
Conditions: The load-bearing capacity of the wall is sufficient, The fixing
material may be used for the wall
▶
▶
▶
Minimum clearances
Wall-mount the product as described.
Install the product bracket (1) on the wall.
Hang the product on the product bracket from above
using the suspension bracket.
Conditions: The load-bearing capacity of the wall is not sufficient
A
▶
C
C
D
▶
Ensure that wall-mounting apparatus on-site has a sufficient load-bearing capacity. Use individual stands or
primary walling, for example.
Do not wall-mount the product if you cannot provide
wall-mounting apparatus with a sufficient load-bearing
capacity.
Conditions: The fixing material may not be used for the wall
B
▶
4.8
Wall-mount the product as described using the permitted
fixing material provided on-site.
Removing the front casing
Minimum clearance
A
165 mm: Air/flue pipe, 60/100 mm diameter
275 mm: Air/flue pipe, 80/125 mm diameter
B
180 mm; optimum approx. 250 mm
C
5 mm; optimum approx. 50 mm
D
500 mm in front of the heat generator to enable
easy access for maintenance work (may be
provided by an opening door).
It is not necessary to maintain a clearance between the
product and components made of combustible materials that
go beyond the minimum clearances.
4.6
▶
4.7
Using the installation template
Use the installation template to ascertain the locations at
which you need to drill holes and make breakthroughs.
Wall-mounting the product
▶
Remove the front casing as shown in the illustration.
1
1.
2.
Check whether the wall has sufficient load-bearing capacity to bear the operational weight of the product.
Check if the supplied fixing material may be used for
the wall.
0020244995_02 ecoTEC pro Installation and maintenance instructions
11
5 Installation
4.9
▶
Removing the side section
▶
2x
▶
If, during gas leak-tightness tests, you
also place the gas lines and the gas valve
in the product under pressure, use a max.
test pressure of 11 kPa (110 mbar).
If you cannot limit the test pressure to
11 kPa (110 mbar), close any gas isolator
cocks that are installed upstream from the
product before you carry out the gas leaktightness test.
If, during gas leak-tightness tests, you
have closed the gas isolator cock that is
installed upstream of the product, relieve
the gas line pressure before you open this
gas isolator cock.
Caution.
Risk of material damage caused by corrosion
Due to non-diffusion-tight plastic pipes in the
heating installation, air gets into the heating
water. Air in the heating water causes corrosion in the heat generator circuit and in the
product.
▶
Caution.
Risk of material damage caused by mechanical deformation.
Caution.
Risk of material damage due to heat transfer during soldering.
Removing both side sections may cause
mechanical distortion in the product, which
may cause damage to the piping, for example, and potentially result in leaks.
▶
▶
5
Only solder connectors if the connectors
are not yet screwed to the service valves.
Caution.
Risk of material damage caused by
changes to the pipes that have already
been connected.
Remove the side section as shown in the illustration.
▶
Installation
Only bend connection pipes if they have
not yet been connected to the product.
5.1
Installation requirements
5.1.1
Information on liquefied petroleum gas
operation
Stresses in supply lines can cause leaks.
In the as-delivered condition, the product is preset for operation with the gas group indicated on the data plate.
▶
5.1.2
Install the supply lines without tension.
Caution.
Risk of material damage due to the gas
leak-tightness test.
At a test pressure of >11 kPa (110 mbar), gas
leak-tightness tests may cause damage to
the gas valve.
12
▶
Always only remove one side section –
never both side sections at the same time.
Danger!
Risk of scalding and/or risk of material
damage due to incorrect installation leading to escaping water.
If you use non-diffusion-tight plastic pipes
in the heating installation, ensure that no
air gets into the heat generator circuit.
Purging the liquid gas tank
If the liquid gas tank is not purged properly, this may result in
ignition problems.
▶
▶
Ensure that the liquid gas tank has been purged properly
before installing the product.
If required, contact the filler or the liquid gas supplier.
Installation and maintenance instructions ecoTEC pro 0020244995_02
Installation 5
5.1.3
Using the correct type of gas
Using the incorrect type of gas may cause fault shutdowns in
the product. Ignition and combustion noise may occur in the
product.
▶
Only use the gas type listed on the data plate.
5.1.4
1.
2.
3.
4.
Required preliminary work
Install a stop cock in the gas line.
Make sure that the existing gas meter is capable of
passing the rate of gas supply required.
Install a system separator (to be provided on-site) directly on the cold water connection for the combination
unit.
Check that the volumetric capacity of the expansion
vessel is sufficient for the system volume.
3.
4.
5.3
▶
5.4
Remove the residues from the gas line by blowing
through the gas line beforehand.
Purge the gas line before start-up.
Checking the gas line for leak-tightness
Check the entire gas line properly for leak-tightness.
Installing the hot and cold water connection
Conditions: The volume of the installed expansion vessel is insufficient
▶
Install an additional expansion vessel, connected as
close to the product as possible, in the heating return.
Conditions: External expansion vessel installed and warm start active
▶
5.
6.
5.2
Install a non-return valve in the product outlet (heating
flow) or decommission the internal expansion vessel
in order to prevent the warm start function from being
increasingly activated due to backflow.
Install a tundish with siphon for the condensate discharge and the exhaust pipe on the expansion relief
valve. Lay as short a drain line as possible, at a downward gradient away from the tundish.
Insulate bare pipes exposed to environmental influences to protect them from frost using suitable insulating material.
1.
2.
5.5
Installing the gas connection
▶
1.
2.
Make the water connections as shown in accordance
with the relevant standards.
Ensure correct water pressure and flow requirements
and that any expansion can be accommodated with the
cold supply pipe work.
Connecting the heating flow and heating
return
Make the heating connections as shown in accordance
with the relevant standards.
Install the gas pipe in accordance with the recognised
rules of technology.
Connect the product to the gas line as shown in accordance with the recognised rules of good engineering
practice.
0020244995_02 ecoTEC pro Installation and maintenance instructions
13
5 Installation
5.6
Connecting the condensate drain pipework
Danger!
Risk of death from escaping flue gases!
The condensate drain pipework for the siphon must not be connected tightly to wastewater piping because, otherwise, the internal
condensate trap may be drained fully and flue
gas may escape.
▶
▶
5.7
1.
Install the discharge pipe for the expansion relief valve
so that it does not interfere with the removal and fitting
of the lower section of the condensate trap.
2.
3.
4.
Install the discharge pipe as shown (do not shorten).
Make sure that the end of the pipe is visible.
Ensure that discharged water or steam cannot cause
injury to persons or damage to electronic components.
Ensure the discharge pipe work is installed, routed and
terminated correctly to minimise the risk of freezing up.
1
2
3
5.
Internal
discharge system
Gulley
Soakaway
The product is equipped with a condensate trap (2). (The
filling height is 145 mm). The condensate trap collects the
condensate that has formed in a vessel with a capacity of
approximately 200 ml, and intermittently releases the contents into the discharge pipe. This minimises the risk of the
discharge pipe freezing.
▶
▶
▶
▶
14
Installing the discharge pipe on the
expansion relief valve
Do not connect the condensate drain
pipework tightly to the waste-water piping.
min.
180
Internal
stackpipe
Leave an installation space of at least 180 mm beneath
the condensate trap.
Connect the condensate discharge (1) to condensate
drain pipework (3) which has a minimum internal diameter of 19 mm (22 mm outside diameter for all external
pipes) and is made from an acid-resistant material (e.g.
plastic overflow pipe).
– The condensate discharge pipework must have
a continuous fall (45 mm per metre) and should
whenever possible terminate at a suitable discharge
point within the heated envelope of the building
that will remain frost free under long periods of low
external temperatures.
During installation remove all burs from inside of cut pipe
work and avoid excessive adhesive which may trap small
pockets of water close to the pipe wall which can freeze
and build into a larger ice plug.
As with other pipe work insulate the condensate discharge pipe to minimise any risk of freezing and beware
when crossing cavities that the fall is maintained and the
pipe sleeved.
Ensure that the condensate drain pipework terminates in
a suitable location. Further information can be obtained
from BS 6798 Specification for installation of gas–fired
boilers of rated input not exceeding 70 kW net.
5.8
Flue installation
5.8.1
Installing and connecting the flue pipe
1.
2.
You can find out which flue pipes may be used by consulting the enclosed flue pipe installation manual.
Observe the information on positioning the opening
for the flue pipe. This information can be found in the
appendix.
Conditions: Installation in damp rooms
▶
You must connect the product to a room-sealed air/flue
gas installation. The combustion air must not be taken
from the installation site.
Caution.
Risk of poisoning due to escaping flue
gas.
Mineral-oil-based greases can damage the
seals.
▶
3.
Instead of grease, use only water or commercially available soft soap to aid installation.
Install the flue pipe using the installation manual.
Installation and maintenance instructions ecoTEC pro 0020244995_02
Installation 5
5.8.2
1.
2.
3.
3.
Replacing the connection piece for the
air/flue pipe as required
1
Replace the connection piece for the air/flue pipe as
required. The product-specific standard equipment is
listed under Technical data.
Remove the connection piece for the air/flue pipe – this
is installed at the factory. (→ Page 15)
65 mm
Alternatives 1 / 2
▶
If required, install the connection piece for the
air/flue pipe, 80/125 mm diameter. (→ Page 15)
Alternatives 2 / 2
▶
2.
If required, install the connection piece with
offset for the air/flue pipe, 60/100 mm diameter.
(→ Page 15)
5.8.2.1 Removing the connection piece for the
air/flue pipe
3.
Insert the alternative connection piece with offset towards the front.
Use two screws (1) to secure the connection piece to
the product.
5.9
Electrical installation
The electrical installation must only be carried out by a qualified electrician.
3.
Danger!
Risk of death from electric shock!
2.
1.
Since mains connection terminals L and N remain live even if the on/off button is switched
off:
▶
▶
1.
2.
3.
Insert a screwdriver into the slot between the measuring
stub pipes.
Press the screwdriver carefully down (1.).
Turn the connection piece anticlockwise (2.) as far as it
will go and then remove it by pulling it upwards (3.).
5.9.1
Switch off the power supply.
Secure the power supply against being
switched on again.
Opening the electronics box
5.8.2.2 Installing the connection piece for the
air/flue pipe, 80/125 mm diameter
1.
2.
3.
Remove the connection piece for the air/flue pipe – this
is installed at the factory. (→ Page 15)
Insert the alternative connection piece. In doing so, pay
attention to the latching lugs.
Turn the connection piece clockwise until it clicks into
position.
5.8.2.3 Installing the connection piece with offset
for the air/flue pipe, 60/100 mm diameter
1.
Remove the connection piece for the air/flue pipe – this
is installed at the factory. (→ Page 15)
▶
Open the electronics box as shown in the illustration.
5.9.2
Carrying out the wiring
Caution.
Risk of material damage caused by incorrect installation.
Mains voltage at incorrect terminals and plug
terminals may destroy the electronics.
▶
0020244995_02 ecoTEC pro Installation and maintenance instructions
Do not connect any mains voltage to the
eBUS terminals (+/-).
15
5 Installation
▶
1.
2.
3.
Only connect the mains connection cable
to the terminals marked for the purpose.
5.9.4
Danger!
Risk of death from electric shock!
Route the connection cables of the components to be
connected through the cable duct provided on the underside of the product on the left.
Use strain reliefs.
Shorten the connection cables as necessary.
If you install the product in a room with high
levels of moisture, e.g. a bathroom, observe
the nationally recognised technical standards
for electrical installations. If you use the factory-installed connection cable, if installed,
with an earthed plug, there is a risk of death
from electric shock.
30 mm max.
To prevent short circuits if a strand accidentally comes
loose, only strip the outer sheathing of flexible lines to a
maximum of 30 mm.
5. Ensure the inner conductor insulation is not damaged
when stripping the outer sheathing.
6. Only strip inner conductors just enough to establish
good, sound connections.
7. To avoid short circuits resulting from loose individual
wires, fit conductor end sleeves on the stripped ends of
the conductors.
8. Screw the respective plug to the connection cable.
9. Check whether all conductors are sitting mechanically
securely in the terminals of the plug. Remedy this if
necessary.
10. Plug the plug into the associated PCB slot; see the
connection diagram in the appendix.
▶
4.
5.9.3
Establishing the power supply
Caution.
Risk of material damage due to high connected voltage.
At mains voltages greater than 253 V, electronic components may be damaged.
▶
1.
2.
3.
4.
5.
6.
7.
8.
9.
16
Make sure that the rated voltage of the
mains is 230 V.
Make sure that the nominal mains voltage is 230 V.
Provide one common electricity supply for the boiler
and for the corresponding controller:
– Power supply: Single-phase, 230 V, 50 Hz
– Fuse protection: ≤ 3 A
Open the electronics box. (→ Page 15)
Connect the product using a fixed connection and an
electrical partition with a contact opening of at least 3
mm (e.g. fuses or power switches).
Route a three-core mains connection cable that complies with the relevant standards through the cable duct
and into the product.
– Mains connection line: Flexible line
Carry out the wiring. (→ Page 15)
Remove the supplied plug from the bracket in the electronics box and screw the plug onto the mains connection cable.
Close the electronics box.
Make sure that access to the mains connection is always available and is not covered or blocked.
Installing the product in a moist
environment
▶
▶
1.
2.
3.
4.
5.
6.
7.
Open the electronics box. (→ Page 15)
Detach the plug from the PCB slot for the power supply
(X1).
Unscrew the plug of the factory-installed power supply
cable, if installed.
Instead of the factory-installed power supply cable, if
installed, use a suitable three-core power supply cable
which complies with the relevant standards.
Carry out the wiring. (→ Page 15)
Close the electronics box.
Observe the flue-gas connection that is required on a
room-sealed air/flue gas installation. (→ Page 14)
5.9.5
1.
2.
3.
4.
Never use the factory-installed connection
cable with earthed plug when installing the
product in a moist environment.
Connect the product using a fixed connection and an electrical partition with a contact opening of at least 3 mm (e.g. fuses
or power switches).
Use a flexible line for the mains connection line, which is routed through the cable
duct into the product.
Connecting controllers to the electronic
system
Install the controller if necessary.
Open the electronics box. (→ Page 15)
Carry out the wiring. (→ Page 15)
Observe the connection diagram in the appendix.
Conditions: Connecting a weather compensator or a room temperature
controller via eBUS
▶
▶
Connect the controller to the eBUS connection.
Bridge the 24 V = RT connection (X100 or X106), if there
is not already a bridge.
Conditions: Connecting a low-voltage controller (24 V)
▶
Remove the bridge and connect the controller to the
24 V = RT connection (X100 or X106).
Conditions: Connecting 230 volt controller
▶
Connect the switched live supply with the terminal
marked RT at X1 (beside the LNPE connections) then
remove the link at X100 (do NOT connect 230 volt to
any other terminal than the RT connection).
Installation and maintenance instructions ecoTEC pro 0020244995_02
Operation 6
Conditions: Connecting a limit thermostat for underfloor heating
▶
5.
6.
Installer level overview
Remove the bridge and connect the limit thermostat to
the Burner off connection.
Close the electronics box.
For multi-circuit controllers, change D.018 from Eco (intermittently operating pump) to Comfort (continuously
operating pump). (→ Page 23)
5.9.6
1.
6.2
S.31
Code
Connecting additional components via
VR 40 ("2 in 7" multi-functional module)
Install the components in accordance with the respective instructions.
D.---
Conditions: Components connected to relay 1
▶
PF
Activate D.027. (→ Page 23)
Conditions: Components connected to relay 2
▶
5.9.7
1.
2.
3.
6
6.1
P.--
Activate D.028. (→ Page 23)
D F
Actuating the circulation pump according
to requirements
Carry out the wiring.
Connect the supply line for the external button using
terminals 1 (0) and 6 (functional drawing) on the X41
edge connector, which is supplied with the controller.
Plug the edge connector into the PCB slot X41.
Operation
Operating concept
--/-DP
6.3
1.
2.
Calling up the installer level
Only call up the installer level if you are a competent
person.
Press
and
("i") at the same time.
◁
The operating concept and the display and setting facilities
of the operator level are described in the operating instructions.
3.
An overview of the display and setting options in the installer
level can be found in the section "Overview of the installer
level". (→ Page 17)
4.
5.
Press
◁
6.
7.
8.
6.4
S.xx appears in the display (current unit status).
to access the installer level.
Code and -- appear in the display.
Set the value 17 (code) and confirm by pressing
.
Press
to access the check programmes (P) and the
fault codes (F) and to return to the diagnostics codes
(D).
Use
or
to set the required value and confirm by
pressing
.
Confirm by pressing ( ).
Press
to cancel a setting or exit the installer level.
Live Monitor (status codes)
Menu → Live monitor
Status codes in the display provide information on the product's current operating mode.
Status codes – Overview (→ Page 35)
0020244995_02 ecoTEC pro Installation and maintenance instructions
17
7 Start-up
6.5
Setting the hot water temperature
▶
Danger!
Risk of death from legionella.
▶
Legionella multiply at temperatures below
60 °C.
▶
▶
▶
▶
Ensure that the end user is familiar with
all of the Anti-legionella measures in order
to comply with the applicable regulations
regarding legionella prevention.
Set the hot water temperature.
Conditions: Water hardness: > 3.57 mol/m³
–
7
Water temperature: ≤ 50 ℃
Start-up
7.1
Carrying out the initial start-up
Initial start-up must be carried out by a customer service
technician or an authorised competent person using the
commissioning checklist. The commissioning checklist in the
appendix (→ Page 41) of the installation instructions must be
filled in and stored carefully along with the unit's documentation.
▶
▶
Carry out the start-up procedure using the commissioning
checklist in the appendix.
Fill in and sign the commissioning checklist.
7.2
▶
Switching the product on and off
Press the on/off button on the product.
◁
7.3
The basic display appears on the display.
Using check programmes
Call up the installer level + 1x
By activating various check programmes, you can trigger
special functions on the product.
Check programmes – Overview (→ Page 38)
7.4
▶
Checking the filling and supplementary water
▶
▶
You must treat the heating water in the following cases:
–
If the entire filling and supplementary water quantity during the operating life of the system exceeds three times
the nominal volume of the heating installation, or
If the guideline values listed in the following table are not
met, or
If the pH value of the heating water is less than 8.2 or
more than 10.0.
–
–
▶
▶
▶
18
Water hardness at specific system volume
> 20 l/kW
≤ 50 l/kW
≤ 20 l/kW
mol/
m³
ppm
CaCO₃
mol/
m³
> 50 l/kW
kW
ppm
CaCO₃
< 50
< 300
<3
200
2
2
0.02
> 50
to ≤ 200
200
2
150
1.5
2
0.02
> 200
to ≤ 600
150
1.5
2
0.02
2
0.02
> 600
ppm
CaCO₃
mol/
m³
2
0.02
2
0.02
2
0.02
1) Nominal capacity in litres/heating output; in the case of multiboiler systems, the smallest single heating output is to be used.
Caution.
Risk of material damage if the heating
water is treated with unsuitable additives.
Unsuitable additives may cause changes in
the components, noises in heating mode and
possibly subsequent damage.
▶
Before filling or topping up the installation, check the
quality of the heating water.
Remove a little water from the heating circuit.
Check the appearance of the heating water.
If you ascertain that it contains sedimentary materials,
you must desludge the installation.
1)
Total
heating
output
Ensure that the heating water is of sufficient quality.
Checking the quality of the heating water
Observe all applicable national regulations and technical
standards when treating the filling and supplementary
water.
Provided the national regulations and technical standards
do not stipulate more stringent requirements, the following
applies:
Caution.
Risk of material damage due to poor-quality heating water
▶
Before filling the installation, measure the hardness of the
filling and supplementary water.
Treating the filling and supplementary water
Checking and treating the heating
water/filling and supplementary water
▶
Use a magnetic rod to check whether it contains magnetite (iron oxide).
If you ascertain that it contains magnetite, clean the installation and apply suitable corrosion-protection measures, or fit a magnetic filter.
Check the pH value of the removed water at 25 °C.
If the value is below 8.2 or above 10.0, clean the installation and treat the heating water.
Ensure that oxygen cannot get into the heating water.
Do not use any unsuitable frost and corrosion protection agents, biocides or sealants.
No incompatibility with our products has been detected to
date with proper use of the following additives.
▶
When using additives, follow the manufacturer's instructions without exception.
We accept no liability for the compatibility of any additive or
its effectiveness in the rest of the heating system.
Installation and maintenance instructions ecoTEC pro 0020244995_02
Start-up 7
Additives for cleaning measures (subsequent
flushing required)
–
–
–
–
–
Adey MC3+
Adey MC5
Fernox F3
Sentinel X 300
Sentinel X 400
Additives intended to remain permanently in the
installation
–
–
–
–
–
4.
5.
6.
7.
8.
Close the drain cocks.
Refill the heating system with water.
Check that the expansion relief valve of the heating
system is functioning correctly by turning the handle
on the valve.
Check the pressure in the heating system and top up
with water if necessary.
Close the filling valve and the cold water valve.
7.7
Filling the heating installation
Adey MC1+
Fernox F1
Fernox F2
Sentinel X 100
Sentinel X 200
1
Additives for frost protection intended to remain
permanently in the installation
–
–
–
Adey MC ZERO
Fernox Antifreeze Alphi 11
Sentinel X 500
▶
If you have used the above-mentioned additives, inform
the end user about the measures that are required.
Inform the end user about the measures required for frost
protection.
▶
7.5
Preventing low water pressure
To ensure that the heating installation operates smoothly,
the indicator on the pressure gauge must point to the upper
half of the grey area or to the middle of the bar graph display
in the display (marked by the dashed limit values) when the
heating installation is cold. This corresponds to a filling pressure of between 0.1 MPa and 0.2 MPa (1.0 bar and 2.0 bar).
1.
Flush the heating installation through.
2.
Undo the cap of the automatic air vent (1) by one to two
rotations and leave it open, as the product purges itself
via the automatic air vent even in continuous mode.
Select the check programme P.06.
3.
◁
4.
5.
If the heating installation extends over several storeys,
higher filling pressures may be required to avoid air entering
the heating installation.
If the filling pressure falls below 0.08 MPa (0.8 bar), the
product indicates low pressure by displaying a flashing
pressure value. If the filling pressure falls below 0.05 MPa
(0.5 bar), the product switches off. The display shows F.22.
▶
Top up the heating water to start the product up again.
The pressure value flashes in the display until a pressure of
0.11 MPa (1.1 bar) or higher has been reached.
7.6
Flushing the heating installation for the first
time ("cold")
Note
The complete heating system must be flushed
at least twice: Once with cold water and once
with hot water in accordance with the following
instructions.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
1.
2.
3.
Check whether all thermostatic radiator valves and both
service valves on the product are open.
Connect a hose to the drain valve that is located at the
lowest position in the heating system.
Open the radiator valves and the drain valves so that
the water can drain quickly. Start at the next point in the
system and open the purging valves on the radiators so
that the contaminated water can completely drain.
0020244995_02 ecoTEC pro Installation and maintenance instructions
16.
The diverter valve moves to the mid-position, the
pumps do not run and the product does not switch
to heating mode.
Observe the information on treating heating water.
(→ Page 18)
Connect the filling and drainage tap in the heating installation to a heating water supply, if possible with the
cold water valve, in accordance with the relevant standards.
Open the heating water supply.
Open all radiator valves (thermostatic radiator valves) of
the heating installation.
If necessary, check that both service valves on the
product are open.
Slowly open the filling and drainage tap so that the water flows into the heating system.
Purge the lowest radiator until water flows out of the
purging valve without bubbles.
Purge all other radiators until the entire heating system
has been filled with water.
Close all purging valves.
Monitor the rising filling pressure in the heating installation.
Fill with water until the required filling pressure is
reached.
Close the filling and drainage tap and the cold water
valve.
Check all connections and the entire system for leaks.
19
7 Start-up
7.8
1.
Purging the heating installation
◁
3.
7.9
1.
2.
7.10
The product does not start up, the internal pump
operates intermittently and purges either the heating
circuit or the hot water circuit.
The display shows the filling pressure of the heating
installation.
Make sure that the filling pressure of the heating installation does not fall below the minimum filling pressure.
– ≥ 0.08 MPa (≥ 0.80 bar)
◁
Gas inspection
7.11.1 Checking the factory-set gas ratio setting
Select the check programme P.00.
◁
2.
7.11
At the end of the filling procedure, the filling pressure of the heating installation should be at least
0.02 MPa (0.2 bar) above the counter-pressure
of the expansion vessel ("Exp") (PInstallation ≥ PExp +
0.02 MPa (0.2 bar)).
If there is still too much air in the heating installation at
the end of the check programme P.00, repeat the check
programme.
Filling and purging the hot water system
Open the cold water stop valve on the product.
Fill the hot water system by opening all the hot water
draw-off valves until water escapes.
Caution.
Risk of material damage caused by making unauthorised settings.
▶
▶
Before you start up the product, compare the gas group
information on the identification plate with the gas group
available at the installation site.
Conditions: The product design is not compatible with the local gas group
Only Vaillant Service Solutions may perform a gas conversion.
If a gas conversion to liquid gas has been carried out, the
smallest possible partial load is higher than is shown on the
display. The correct values can be found in the Technical
data in the appendix.
▶
▶
Call Vaillant Service Solutions (0330 1003 143).
Do not start up the product.
Conditions: The product design is compatible with the local gas group
▶
Filling the condensate trap
Never modify the factory setting of the gas
pressure regulator of the gas valve.
Proceed as described below.
7.11.2 Checking the leak-tightness of the flue gas
installation and flue gas recirculation
1.
2.
3.
4.
5.
6.
1
7.
Check the flue gas installation is intact in accordance
with the latest gas safe technical bulletin and information supplied in the installation instructions.
For extended flue gas installations check for flue gas
recirculation using the air analysis point.
Use a flue gas analyser.
If you discover CO or CO2 in the supply air, search for
the leak in the flue gas installation or for signs of flue
gas recirculation.
Eliminate the damage properly.
Check again whether the supply air contains any CO or
CO2.
If you cannot eliminate the damage, do not start up the
product.
7.11.3 Checking the gas flow rate
1.
Remove the lower section from the condensate trap (1).
2.
Fill the lower section with water up to 10 mm below the
upper edge.
Attach the lower section to the condensate trap.
3.
The gas flow rate has been set during production and does
not require adjustment. With the front casing fitted check the
gas flow rate of the boiler as follows:
▶
▶
▶
▶
▶
▶
20
Start up the product with the check programme P.01.
In addition, ensure that maximum heat can be dissipated
into the heating system by turning up the room thermostat.
Wait at least 5 minutes until the boiler has reached its
operating temperature.
Ensure that all other gas appliances in the property are
turned off.
Measure the gas flow rate at the gas meter.
Compare the measured values with the corresponding
values in the table.
Installation and maintenance instructions ecoTEC pro 0020244995_02
Start-up 7
H gas in m³/h
Qn,
DHW
nom.
HeatoutNom. +5%
put
DHW
P gas in kg/h
-10%
Nom. +5%
-10%
18.9
18.5
2.00
2.10
1.80
1.47
1.54
1.32
23.5
23.0
2.49
2.61
2.24
1.83
1.92
1.64
24.5
24.0
2.59
2.72
2.33
1.90
2.00
1.71
27.8
27.2
2.94
3.09
2.65
2.16
2.27
1.94
5.
6.
7.
8.
Conditions: Gas flow rate not in the permissible range
▶
▶
Check all of the piping and ensure that the gas flow rates
are correct.
Only put the product into operation once the gas flow
rates have been corrected.
Conditions: Gas flow pressure not in the permissible range
Conditions: Gas flow rate in the permissible range
▶
▶
▶
9.
Caution.
Risk of material damage and operating
faults caused by incorrect gas connection pressure.
If the gas connection pressure lies outside
the permissible range, this can cause operating faults in and damage to the product.
▶ Do not make any adjustments to the
product.
▶ Do not start up the product.
End the check programme P.01.
Allow the boiler to cool down by allowing pump overrun to
operate for a minimum of 2 minutes.
Record the boiler maximum gas flow rate onto the
Benchmark gas boiler commissioning checklist.
7.11.4 Checking the gas flow pressure
1.
2.
Open the gas isolator cock.
Start up the product with the check programme P.01.
In addition, ensure that maximum heat can be dissipated into the heating system by turning up the room
thermostat.
With the boiler operating at full load check that the gas
inlet working pressure at the reference test point complies with the requirements.
– Permissible gas flow pressure for operation with
G20 natural gas: 1.3 … 2.3 kPa (13.0 … 23.0 mbar)
– Permissible gas flow pressure for operation with
G31 liquid gas: 2.3 … 4.3 kPa (23.0 … 43.0 mbar)
Should the pressure recorded at the reference test point
in the boiler be lower than indicated check if there is
any blockage in the pipework or if the pipework is undersized.
Ensure that the gas inlet working pressure can be
obtained with all other gas appliances in the property
working.
Close the gas isolator cock.
▶
▶
▶
▶
▶
1
▶
▶
▶
▶
▶
▶
If you cannot correct the failure, notify the gas supply
company and proceed as follows:
End the check programme P.01.
Allow the boiler to cool down by allowing pump overrun
to operate for a minimum of two minutes.
Close the gas isolator cock.
Remove the pressure gauge and retighten the sealing
screw (1) for the measuring nipple.
Open the gas isolator cock.
Check the measuring nipple for gas tightness.
Close the gas isolator cock.
Install the front casing.
Disconnect the product from the power mains.
You must not start up the boiler.
Conditions: Gas flow pressure in the permissible range
▶
▶
▶
▶
2
3.
4.
Use a screwdriver to undo the measuring nipple screw
(1) (lower screw) at the gas valve.
Connect a pressure gauge (2) to the measuring nipple
(1).
0020244995_02 ecoTEC pro Installation and maintenance instructions
▶
▶
▶
▶
▶
End the check programme P.01.
Allow the boiler to cool down allowing pump overrun to
operate for a minimum of two minutes.
Close the gas isolator cock.
Remove the pressure gauge and retighten the sealing
screw (1) for the measuring nipple.
Open the gas isolator cock.
Check the measuring nipple for gas tightness.
Install the front casing.
Reset boiler controls for normal operation.
Record the appliance gas inlet working pressure (kPa
resp. mbar) in the Benchmark gas boiler commissioning
checklist.
21
7 Start-up
▶
7.11.5 Checking the CO₂ content and, if
necessary, adjusting it (air index setting)
1.
2.
3.
4.
Start up the product with the check programme P.01.
Wait at least five minutes until the product reaches its
operating temperature.
Measure the CO₂ and CO/CO₂ content at the flue gas
analysis point.
Compare the measured value with the corresponding
value in the table.
Settings
Unit
G20
natural
gas
G31 liquid
gas
CO₂ after 5 minutes
in full load mode with
front casing closed
Vol.–%
9.2 ± 1.0
10.4 ± 0.5
CO₂ after 5 minutes
in full load mode with
front casing removed
Vol.–%
9.0 ± 1.0
10.2 ± 0.5
Set for Wobbe index
W₀
kWh/m³
14.09
21.34
O₂ after 5 minutes in
full load mode with
front casing closed
Vol.–%
4.5 ± 1.8
5.1 ± 0.8
CO value with full load
ppm
≤ 250
≤ 250
≤ 0.0031
≤ 0.0026
CO/CO₂
▶
▶
▶
▶
▶
For liquid gas only: Only perform the adjustment in extremely small increments (approx. 1/16 turn), and wait
approx. one minute after each adjustment until the value
stabilises.
( ).
After you have implemented the settings, press
If an adjustment is not possible in the specified adjustment range, you must not start up the product.
If this is the case, inform Customer Service.
Refit the covering cap.
Install the front casing.
7.12
▶
▶
Checking leak-tightness
Check the gas pipe, the heating circuit and the domestic
hot water circuit for leak-tightness.
Check that the air/flue pipe has been installed correctly.
Conditions: Room-sealed operation
▶
Check whether the vacuum chamber has been closed
tightly.
7.12.1 Checking the heating mode
1.
2.
Make sure that there is a heat requirement.
Call up Live monitor.
◁
Conditions: The CO₂ content must be adjusted
If the product is working correctly, the display shows
S.04.
7.12.2 Checking the hot water generation
1.
2.
Open a hot water valve all the way.
Call up Live monitor.
◁
7.13
1.
1
2.
3.
4.
5.
6.
2
▶
▶
▶
▶
22
7.
If the hot water generation is working correctly, S.14
appears in the display.
Thoroughly flushing the heating installation
("hot")
Operate the appliance until the boiler and the heating
system are up to temperature.
Check the heating system for leaks.
Connect a hose to the drain valve located at the lowest
position of the heating system.
Shut off the boiler, open the drain valve and all purge
valves on the radiators and allow the water to flow out
of the heating system and the boiler quickly and fully.
Close the drain valve.
Fill the heating system again with water as described in
Filling the heating installation (→ Page 19) and Purging
the heating installation (→ Page 20).
Re-fill the system until the system design pressure of
0,1 MPa (1,0 bar) is attained.
Remove the yellow sticker.
Remove the covering cap (1).
Set the CO₂ content (value with front casing removed)
by turning the screw (2).
– Higher CO₂ content: Turn anti-clockwise
– Lower CO₂ content: Turn clockwise
For natural gas only: Only perform the adjustment
in small increments of a 1/8 turn and wait approx.
one minute after each adjustment until the value
stabilises.
Installation and maintenance instructions ecoTEC pro 0020244995_02
Adapting the unit to the heating installation 8
Note
The actual reading on the digital pressure
gauge should ideally be 0,05 MPa (0,5 bar)
plus an additional pressure corresponding
to the highest point of the system above the
base of the boiler – 10 m head equals an additional 1 bar reading on the pressure gauge.
The minimum pressure should not be less
than 0,1 MPa (1 bar) in any installation. If
the system is to be treated with an inhibitor it
should be applied at this stage in accordance
with the manufacturer’s instructions. Further
information can be obtained from Sentinel,
Betz Dearborn Ltd., Tel: 0151 420 9595, or
Fernox, Alpha– Fry technologies. Tel: 0870
8700362.
8.
Install the front casing.
8
8.2.2
▶
Adapting the unit to the heating
installation
8.1
8.3
1.
Calling up diagnostics codes
You can find the setting options in the diagnostics codes in
the installer level.
Overview of diagnostics codes (→ Page 31)
▶
Burner anti-cycling time
To prevent frequent switching on and off of the burner and
thus prevent energy losses, an electronic restart lockout
is activated for a specific period each time the burner is
switched off. The burner anti-cycling time is only active
for the heating mode. Hot water handling during a burner
anti-cycling time does not affect the time function element
(default setting: 20 mins).
8.2.1
2.
2.
Set maximum burner anti-cycling time
[min]
35
40
45
50
55
60
30
29.0
33.0
37.0
41.0
45.0
49.5
35
25.5
29.5
33.0
36.5
40.5
44.0
40
22.5
26.0
29.0
32.0
35.5
38.5
45
19.5
22.5
25.0
27.5
30.5
33.0
50
16.5
18.5
21.0
23.5
25.5
28.0
55
13.5
15.0
17.0
19.0
20.5
22.5
60
10.5
11.5
13.0
14.5
15.5
17.0
65
7.0
8.0
9.0
10.0
11.0
11.5
70
4.0
4.5
5.0
5.5
6.0
6.5
75
1.0
1.0
1.0
1.0
1.0
1.0
Resetting the remaining burner anti-cycling
time
Press
.
Setting the maintenance interval
Navigate to diagnostics code D.084 in the installer level
and confirm by pressing
.
Set the maintenance interval (operating hours) until the
next maintenance work is due and confirm by pressing
.
Number
of persons
Guideline value for burner
operating hours until the
next inspection/maintenance
work is due for an average
operating time of one year
(dependent upon the system
type)
1‑2
1050 h
2‑3
1150 h
1‑2
1500 h
2‑3
1600 h
2‑3
1800 h
3‑4
1900 h
3‑4
2600 h
4‑5
2700 h
3‑4
2800 h
4‑6
2900 h
3‑4
3000 h
4‑6
3000 h
Call up the installer level. (→ Page 17)
8.2
1.
TFlow
(target)
[°C]
Setting the burner anti-cycling time
5.0 kW
10.0 kW
15.0 kW
Navigate to diagnostics code D.002 in the installer level
and confirm by pressing
.
Set the burner anti-cycling time and confirm by pressing
.
TFlow
(target)
[°C]
Heat demand
Set maximum burner anti-cycling time [min]
1
5
10
15
20
25
30
30
2.0
4.0
8.5
12.5
16.5
20.5
25.0
35
2.0
4.0
7.5
11.0
15.0
18.5
22.0
40
2.0
3.5
6.5
10.0
13.0
16.5
19.5
45
2.0
3.0
6.0
8.5
11.5
14.0
17.0
50
2.0
3.0
5.0
7.5
9.5
12.0
14.0
55
2.0
2.5
4.5
6.0
8.0
10.0
11.5
60
2.0
2.0
3.5
5.0
6.0
7.5
9.0
65
2.0
1.5
2.5
3.5
4.5
5.5
6.5
70
2.0
1.5
2.0
2.5
2.5
3.0
3.5
75
2.0
1.0
1.0
1.0
1.0
1.0
1.0
0020244995_02 ecoTEC pro Installation and maintenance instructions
20.0 kW
25.0 kW
> 27.0 kW
23
8 Adapting the unit to the heating installation
8.4
Setting the pump output
1.
Navigate to diagnostics code D.014 in the installer level
and confirm by pressing
.
Set the required pump output.
2.
1
Conditions: Low loss header installed
▶
Switch off the speed regulation and set the pump output
to a fixed value.
8.4.1
Remaining feed head of the pump
Remaining feed head [hPa]
8.4.1.1 Pump characteristic line for VUW 246, VUW
286
400
100% PWM
80%
70%
60%
53%
350
300
250
200
▶
150
100
Regulate the pressure using the adjusting screw (1).
Position of the
adjusting screw
Pressure
in MPa
(mbar)
Notes/application
Right-hand stop
(turned all the
way down)
0.035
(350)
If the radiators do not heat
up sufficiently at the default
setting. In this case, you
must set the pump to the
maximum speed.
Mid-position
(5 turns to the
left)
0.025
(250)
Default setting
5 further turns to
the left from the
mid-position
0.017
(170)
If noises are produced in
the radiators or radiator
valves
50
0
0
200
400
600
800
1000 1200 1400
Flow rate [l/hr]
Remaining feed head [hPa]
8.4.1.2 Pump characteristic line for VUW 306
400
300
100% PWM
85%
70%
60%
53%
200
100
8.6
0
0
8.5
200
400
600
800
1000 1200 1400 1600 1800
Flow rate [l/hr]
Setting the bypass valve
Caution.
Risk of material damage caused by incorrect setting of the high-efficiency pump
If the pressure at the bypass valve is increased (by turning it clockwise) and the
pump output is set to less than 100%, the
product may not operate correctly.
▶
▶
▶
In this case, set the pump output to
5 = 100% using diagnostics code D.014.
▶
▶
▶
▶
▶
▶
▶
▶
Remove the front casing. (→ Page 11)
▶
▶
24
Install the front casing.
Handing the product over to the operator
When you have finished the installation, affix the enclosed sticker (which requests that the user reads the
instructions) to the front of the product in the operator's
language.
Explain to the operator how the safety devices work and
where they are located.
Inform the operator how to handle the product.
In particular, draw attention to the safety information
which the operator must follow.
Inform the operator that they must have the product
maintained in accordance with the specified intervals.
Pass all of the instructions and documentation for the
product to the operator for safe-keeping.
Inform the operator about measures taken to ensure the
supply of combustion air and flue gas guiding, and instruct the operator that he must not make any changes.
Inform the operator that they must not store or use explosive or highly flammable substances (such as petrol,
paper or paint) in the installation room of the product.
Complete and sign off the Benchmark commissioning
check list.
Complete and sign off the guarantee documentation.
Installation and maintenance instructions ecoTEC pro 0020244995_02
Troubleshooting 9
9
Troubleshooting
9.1
Checking service messages
appears if you have set a maintenance interval, for example, and this has passed or a service message is issued.
The product is not in fault mode.
▶
9.5
1.
2.
3.
4.
5.
Call up the Live Monitor. (→ Page 17)
Conditions: S.46 is displayed
6.
7.
The product is in Comfort protection mode. The product continues to run with restricted comfort after it has detected a
fault.
8.
▶
9.
To establish whether or not a component is defective,
read the fault memory. (→ Page 25)
Note
If no fault message is present, the product will
automatically switch back to normal operating
mode after a certain time.
9.2
▶
Eliminating faults
If fault messages are displayed (F.XX), eliminate the fault
after checking the table in the appendix.
Check programmes – Overview (→ Page 38)
Overview of fault codes (→ Page 36)
If several faults occur at the same time, the display shows
the corresponding fault messages for two seconds each in
alternation.
▶
▶
Press
(max. three times) to restart the product.
If you are unable to eliminate the fault and the fault recurs despite reset attempts, contact customer service.
9.3
Calling up and clearing the fault memory
Preparing the repair work
Decommission the product.
Disconnect the product from the power mains.
Remove the front casing. (→ Page 11)
Close the gas isolator cock.
Close the service valves in the heating flow and in the
heating return.
Close the service valve in the cold water pipe.
Drain the product if you want to replace water-bearing
components of the product.
Make sure that water does not drip on live components
(e.g. the electronics box).
Use only new seals.
9.5.1
Procuring spare parts
The original components of the product were also certified
by the manufacturer as part of the declaration of conformity.
If you use other, non-certified or unauthorised parts during
maintenance or repair work, this may void the conformity of
the product and it will therefore no longer comply with the
applicable standards.
We strongly recommend that you use original spare parts
from the manufacturer as this guarantees fault-free and safe
operation of the product. To receive information about the
available original spare parts, contact the contact address
provided on the reverse of these instructions.
▶
If you require spare parts for maintenance or repair
work, use only the spare parts that are permitted for the
product.
9.6
Replacing defective components
9.6.1
Replacing the burner
1.
Remove the compact thermal module. (→ Page 28)
The last 10 fault messages are stored in the fault memory.
▶
▶
Call up the installer level. (→ Page 17)
Navigate to the fault codes.
◁
▶
▶
▶
9.4
1.
2.
The number of faults that have occurred is shown in
the display and the faults that are currently called up
are displayed with their fault numbers F.xx.
1
Press
or
to call up individual fault messages.
To delete the entire fault list, navigate to diagnostics code
D.094 in the installer level.
Set the diagnostics code to 1, and confirm by pressing
.
Resetting parameters to factory settings
Navigate to diagnostics code D.096 in the installer level.
Set the diagnostics code to 1, and confirm by pressing
.
0020244995_02 ecoTEC pro Installation and maintenance instructions
2
2.
3.
4.
5.
Undo the four screws (1) on the burner.
Remove the burner.
Install a new seal (2) on the new burner.
Install the compact thermal module. (→ Page 29)
25
9 Troubleshooting
9.6.2
Replacing the fan or gas valve
1
2
3
15. Tighten the cap nut (2) on the gas valve and the cap
nut (8) between the gas pipes. In the process, secure
the gas pipe against twisting. Use new seals.
16. After you have completed this work, carry out a leaktightness test (function check). (→ Page 22)
17. If you have installed a new gas valve, adjust the gas
ratio setting. (→ Page 20)
4
9.6.3
5
1.
2.
3.
6
7
8
Replacing the heat exchanger
Drain the product. (→ Page 30)
Remove the compact thermal module. (→ Page 28)
Detach the condensate drain hose from the heat exchanger.
1
2
3
1.
Remove the air intake pipe.
2.
3.
Remove the plug from the gas valve (7).
Remove the plug from the fan motor (6) by pushing in
the latching lug.
Unscrew either the cap nut (2) on the gas valve or the
cap nut (8) between the gas pipes. Secure the gas pipe
against twisting.
Unscrew the three screws (2)-(4) between the mixture
pipe (1) and the fan flange.
4.
5.
4.
Remove the clamps (2) and (3) from the flow connection and the return connection.
5.
6.
7.
Detach the flow connection.
Detach the return connection.
Remove two screws (1) on each of the two retainers.
1
2
1
2
6.
7.
8.
9.
10.
11.
12.
13.
14.
26
Remove the entire fan/gas valve unit from the product.
If you want to replace the gas valve, unscrew the cap
nut (2) if the gas pipe is still secured to the gas valve.
Unscrew both fixing screws (1) on the gas valve and
remove the fan from the gas valve.
Replace the defective fan or the defective gas valve.
Install the gas valve and the fan in the same position as
before. Use new seals.
Screw the fan to the gas valve.
If you had removed the gas pipe, screw the cap nut
of the gas pipe (2) only loosely to the gas valve. Only
tighten the cap nut on the gas valve after the installation work has been completed.
Refit the entire fan/gas valve unit in reverse order. You
must use a new seal (5) for this.
Ensure that the order in which the three screws are
screwed in between the fan and the mixture pipe corresponds to the numbering (3), (2) and (4).
8.
Remove the lower three screws (2) on the rear section
of the retainer.
9. Swing the retainer to the side around the top screw (1).
10. Pull the heat exchanger downwards and to the right,
and remove it from the product.
11. Install the new heat exchanger in reverse order.
12. Replace the seals.
Installation and maintenance instructions ecoTEC pro 0020244995_02
Inspection and maintenance 10
Note
Instead of grease, use only water or commercially available soft soap to aid installation.
◁
5.
16. Fill and purge the product and, if necessary, the heating
installation. (→ Page 19)
1.
Drain the product. (→ Page 30)
6.
9.7
1.
2.
2
3.
4.
3
4
2.
3.
4.
5.
6.
7.
8.
9.
Undo the screwed connection (4).
Remove both screws (1) on the support plate (2).
Remove the support plate (2).
Pull out the expansion vessel (3) towards the front.
Insert the new expansion vessel into the product.
Screw the new expansion vessel to the water connection. Use a new seal for this.
Attach the support plate using both screws (1).
Fill and purge the product and, if necessary, the heating
installation. (→ Page 19)
9.6.5
Replacing the PCB or the display
Note
If you only replace one component, when the
product is switched on, the new component adopts the parameters that were previously set from
the component that was not replaced.
1.
2.
3.
Open the electronics box. (→ Page 15)
Replace the PCB or display according to the assembly
and installation instructions supplied.
Close the electronics box.
9.6.6
1.
2.
3.
4.
Replacing the PCB and the display
Open the electronics box. (→ Page 15)
Replace the PCB and display according to the
assembly and installation instructions supplied.
Close the electronics box.
Press the on/off button on the product. (→ Page 18)
0020244995_02 ecoTEC pro Installation and maintenance instructions
VUW 246/5-3 (H-GB) ecoTEC pro
24
7
VUW 286/5-3 (H-GB) ecoTEC pro
28
22
VUW 286/5-3 (P-GB) ecoTEC pro
28
22
◁
Replacing the expansion vessel
1
Set the correct value for the relevant product type in accordance with the table below and confirm by pressing
.
Product type number
13. Insert the flow and return connections into the heat
exchanger as far as they will go.
14. Make sure that the brackets are seated correctly on the
flow and return connections.
15. Install the compact thermal module. (→ Page 29)
9.6.4
You are automatically taken to D.093 to set the
device specific number.
9.8
▶
10
▶
The electronics are now set to the product type and
the parameters of all diagnostics codes are set to
default settings.
Make the system-specific settings.
Completing repair work
Establish the power supply.
Switch the product back on if this has not yet been
done. (→ Page 18)
Install the front casing.
Open all service valves and the gas isolator cock.
Checking the product for leak-tightness
Check that the product is leak-tight. (→ Page 22)
Inspection and maintenance
You must carry out an annual inspection of the product.
The annual inspection can be effectively performed
without removing components by requesting data from
the DIA system, carrying out the simple visual checks indicated in the table in the appendix and performing a flue
gas measurement. The maintenance intervals and their
scope are determined by the heating engineer based on
the condition of the boiler found during the inspection. All
inspection and maintenance work should be performed in
the order specified in the table in the appendix.
During any inspection and maintenance or after change
of parts of the combustion circuit, the following must be
checked:
–
–
–
–
–
–
–
–
▶
The boiler has been installed in accordance with the relevant installation instructions.
The integrity of the flue gas installation and flue seals is
in accordance with the relevant flue installation instructions enclosed.
Visual, the integrity of the boiler combustion circuit and
relevant seals (paying particular attention to the burner
door seal).
The gas inlet working pressure at maximum rate.
The gas flow rates.
Correctness of electrical, water and gas connections.
Correctness of the water pressure.
The condition of the whole system, in particular the condition of radiator valves, evidence of leakage from the
heating system and dripping taps.
Correct any faults before proceeding.
27
10 Inspection and maintenance
10.1
Removing the compact thermal module
1
Note
The compact thermal module consists of four
main components:
7
2
– Speed-regulated fan,
– Gas/air connection,
– Gas supply (mixture pipe) with burner flange,
3
– Premix burner.
6
Danger!
Risk of death and risk of material damage
caused by hot flue gas.
The seal, insulating mat and self-locking nuts
on the burner flange must not be damaged.
Otherwise, hot flue gases may escape and
cause personal injury and material damage.
▶
▶
▶
1.
2.
3.
4.
Replace the seal each time you open the
burner flange.
Replace the self-locking nuts on the
burner flange each time you open the
burner flange.
If the insulating mat on the burner flange
or on the back wall of the heat exchanger
shows signs of damage, replace the insulating mat.
5
4
7.
8.
9.
10.
11.
12.
13.
14.
15.
Switch off the product using the on/off button.
Close the gas isolator cock.
Remove the front casing.
Tilt the electronics box forward.
1
10.2
1.
2
3
Remove the ignition line plug (5) and the earth line plug
(6) from the ignition electrode.
Remove the plug (3) from the fan motor.
Remove the plug (4) from the gas valve.
Unscrew the four nuts (7).
Remove the entire compact thermal module (2) from
the heat exchanger (1).
Check the burner and the heat exchanger for damage
and dirt.
If necessary, clean or replace the components according to the following sections.
Fit a new burner flange seal.
Check the insulating mat on the burner flange and on
the back wall of the heat exchanger. If you notice any
signs of damage, replace the relevant insulating mat.
Cleaning the heat exchanger
Protect the folded down electronics box against sprayed
water.
2
3
4
1
2.
3.
5.
Unscrew the retaining screw (2) and remove the air
intake pipe (1) from the intake stub.
6.
Unscrew either the cap nut on the gas valve (3) or the
cap nut (4) between the gas pipes.
28
4.
4
Never undo the four nuts on the stud bolt (1) or tighten
them.
Clean the heating coil (3) of the heat exchanger (4) using water or, if required, vinegar (to a maximum of 5%
acid). Allow the vinegar to act on the heat exchanger for
20 minutes.
Rinse away any loose dirt with a sharp jet of water or
use a plastic brush. Do not point the water jet directly
at the insulating mat (2) on the back of the heat exchanger.
Installation and maintenance instructions ecoTEC pro 0020244995_02
Inspection and maintenance 10
◁
10.3
The water flows out of the heat exchanger through
the condensate siphon.
Checking the burner
1
2
1
4.
5.
6.
7.
2
3
1.
2.
3.
10.4
1.
2.
3.
4.
10.5
Check the surface of the burner (1) for damage. If you
see any damage, replace the burner.
Fit a new burner flange seal (3).
Check the insulating mat (2) on the burner flange. If you
notice any signs of damage, replace the insulating mat.
Tilt the electronics box forward.
Remove the clamp (2).
Remove the pipe (1) from the product.
Rinse the filter under a jet of water, holding it against
the direction of flow.
8. If the filter is damaged or it can no longer be cleaned
sufficiently, you must replace the filter.
9. Refit the pipe.
10. Reinsert the clamp.
11. Always use new seals and retighten the cap nuts and
the lock nut.
12. Open the cold water stop valve.
10.6
1
Cleaning the condensate trap
Remove the lower section of the condensate trap (1).
Flush out the lower section with water.
Fill the lower section with water up to about 10 mm below the upper edge.
Attach the lower section to the condensate trap.
7
2
3
Cleaning the filter in the cold water inlet
Applicability: Product with integrated hot water generation
Installing the compact thermal module
6
5
4
1.
1
2
1.
2.
3.
Close the cold water stop valve.
Drain the product on the hot water side.
Unscrew the cap nut (2) and the lock nut (1) from the
product's casing.
0020244995_02 ecoTEC pro Installation and maintenance instructions
Connect the compact thermal module (2) to the heat
exchanger (1).
2. Tighten the four new nuts (7) in a cross-wise pattern
until the burner flange fits closely and uniformly onto the
mating surfaces (if a torque spanner is available, set at
6 Nm).
3. Connect the plugs (3) to (6) again.
4. Connect the gas line using a new seal. In the process,
secure the gas pipe against twisting.
5. Open the gas isolator cock.
6. Make sure that there are no leaks.
7. Check that the sealing ring in the air intake pipe is positioned correctly in the seal seat.
8. Reconnect the air intake pipe to the intake nozzle.
9. Secure the air intake pipe with the retaining screw.
10. Check the gas flow pressure.
29
11 Decommissioning
10.7
1.
2.
Draining the product
Close the service valves of the product.
Start the check programme P.06 (diverter valve midposition).
Open the drain valves.
Make sure that the cap of the automatic air vent on
the internal pump is open so that the product can be
drained fully.
3.
4.
10.8
1.
2.
Checking the pre-charge pressure for the
internal expansion vessel
Close the service valves and drain the product.
Measure the pre-charge pressure of the expansion vessel at the vessel valve.
Conditions: Pre-charge pressure < 0.075 MPa (0.75 bar)
▶
3.
4.
5.
Ideally, you should top up the expansion vessel with
nitrogen. Otherwise, top it up with air. Ensure that the
drain valve is open when topping up.
If water escapes from the valve of the expansion
vessel, you must replace the expansion vessel.
(→ Page 27)
Fill the heating installation. (→ Page 19)
Purge the heating installation. (→ Page 20)
10.9
11.2
▶
Press the on/off button.
◁
▶
▶
▶
▶
12
Decommissioning the product
The display goes out.
Disconnect the product from the power mains.
Close the gas isolator cock.
Close the cold water stop valve.
Drain the product. (→ Page 30)
Recycling and disposal
Disposing of the packaging
▶
▶
13
Dispose of the packaging correctly.
Observe all relevant regulations.
Customer service
To ensure regular servicing, it is strongly recommended
that arrangements are made for a Maintenance Agreement.
Please contact Vaillant Service Solutions for further details:
Telephone: 0330 100 3461
Completing inspection and maintenance
work
Once you have completed all maintenance work:
▶
▶
▶
Check the gas flow pressure. (→ Page 21)
Check the CO₂ content and, if necessary, adjust it (air
index setting). (→ Page 22)
If required, reset the maintenance interval. (→ Page 23)
10.10 Checking the product for leak-tightness
▶
Check that the product is leak-tight. (→ Page 22)
11
Decommissioning
11.1
▶
Press the on/off button.
◁
▶
▶
30
Temporarily decommissioning the product
The display goes out.
Close the gas isolator cock.
On combination products and products with a connected
domestic hot water cylinder, you must also close the cold
water stop valve.
Installation and maintenance instructions ecoTEC pro 0020244995_02
Appendix
Appendix
A
Overview of diagnostics codes
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Code
Parameter
Values or explanations
Default
setting
Own setting
D.000 Heating partial load
Adjustable heating partial load in kW
Auto: Product automatically adjusts max. partial load to
current system demand
Auto
D.001 Pump overrun: Heating
1 … 60 min
5 min
D.002 Max. anti-cycl. time: Heating
2 … 60 min
20 min
D.003 Outlet temperature actual value
In °C
Not adjustable
D.004 Cylinder temperature actual value
In °C
Not adjustable
D.005 Heating target flow temperature
In °C; the maximum value that is set in D.071 and is
restricted by means of an eBUS control if such a control
is connected
Not adjustable
D.006 Outlet temperature target value
35 … 65 ℃
Not adjustable
D.007 Comfort mode target value
APC target value
Cylinder temperature target value
Product with integrated domestic hot water generation,
and product with integrated domestic hot water generation and shift-load cylinder
35 … 65 ℃
Product with heating mode only
Frost protection is at 15 °C, then 40 to 70 °C (max.
temperature can be adjusted under D.020)
Not adjustable
D.008 Controller 3-4
Room thermostat open (no heat requirement)
Room thermostat closed (heat requirement)
Not adjustable
D.009 eBUS controller target value
In °C
Not adjustable
D.010 Internal pump
On, Off
Not adjustable
D.011 External pump
On, Off
Not adjustable
D.012 Cyl. charging pump
On, Off
Not adjustable
D.013 Circulation pump
On, Off
Not adjustable
D.014 Pump speed target value
Target value of internal high-efficiency pump in %. Possible settings:
0 = Auto
1 = 53
2 = 60
3 = 70
4 = 85
5 = 100
D.015 Pump speed actual value
Actual value for internal high-efficiency pump in %
Not adjustable
D.016 Controller 24 V DC: Heating mode
Heating mode off/on
Not adjustable
D.017 Control type
Control type:
0 = Flow, 1 = Return
Return: Automatic detection function for heating output
inactive. Max. possible heating partial load when D.000
is on Auto.
0020244995_02 ecoTEC pro Installation and maintenance instructions
0 = Auto
0 = Flow
31
Appendix
Code
Parameter
Values or explanations
Default
setting
Own setting
D.018 Pump operating mode
1 = Comfort (continuously operating pump)
Internal pump is switched on when the heating flow temperature is not at Heating off and the heat requirement
is enabled via an external controller
3 = Eco (intermittently operating pump)
Internal pump is switched on every 25 minutes for 5
minutes once the overrun time has elapsed
3 = Eco
D.019 Pump operating mode: 2-stage
pump
Setting for two-stage pump operating mode
0: Burner mode stage 2, pump flow/overrun stage 1
1: Heating mode and pump flow/overrun stage 1, hot
water handling mode stage 2
2: Automatic heating mode, pump flow/overrun stage 1,
hot water handling mode stage 2
3: Always stage 2
4: Automatic heating mode, pump flow/overrun stage 1,
hot water handling mode stage 1
2
D.020 Max. DHW temperature target
value
Adjustment range: 50-70 °C (actoSTOR 65 °C)
65 °C
D.022 DHW demand
On, Off
Not adjustable
D.023 Heating mode status
Heating on, heating off (summer mode)
Not adjustable
D.025 Ext. eBUS signal: Cylinder charging
On, Off
Not adjustable
D.026 Auxiliary relay
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extractor hood
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active)
9 = Legionella protection pump (not active)
10 = Solar valve (not active)
2 = External
pump
D.027 Accessory relay 1
Switching of relay 1 on the VR 40 "2 in 7" multi-functional module
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extractor hood
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active)
9 = Legionella protection pump (not active)
10 = Solar valve (not active)
2 = External
pump
D.028 Accessory relay 2
Switching of relay 2 on the VR 40 "2 in 7" multi-functional module
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extractor hood
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active)
9 = Legionella protection pump (not active)
10 = Solar valve (not active)
2 = External
pump
D.029 Water circulation vol. actual value
Actual value in m³/h
32
Not adjustable
Installation and maintenance instructions ecoTEC pro 0020244995_02
Appendix
Code
Parameter
Values or explanations
Default
setting
Own setting
D.033 Fan speed target value
In rpm
Not adjustable
D.034 Fan speed actual value
In rpm
Not adjustable
D.035 3-way valve position
Heating mode
Parallel operation (mid-position)
DHW mode
Not adjustable
D.036 DHW flow rate
In l/min
Not adjustable
D.039 Solar inlet temp. actual value
Actual value in °C
Not adjustable
D.040 Flow temperature actual value
Actual value in °C
Not adjustable
D.041 Return temperature actual value
Actual value in °C
Not adjustable
D.044 Ionisation value actual value
Display field 0 to 1020
> 800 no flame
< 400 good flame
Not adjustable
D.046 Pump mode
0 = Relay with disable facility
1 = PWM with disable facility
D.047 Current outside temperature
(with Vaillant weather compensator)
Actual value in °C
D.050 Offset min. speed
In rpm, setting range: 0 to 3000
Nominal
value set in
factory
D.051 Offset max. speed
In rpm, setting range: -990 to 0
Nominal
value set in
factory
D.058 Solar post-heating
0 = Solar post-heating deactivated
3 = DHW activation target value minimum 60 °C, thermostatic mixer valve required between product and draw-off
point
0 = Solar
post-heating
deactivated
D.060 Number of safety therm. shutdowns
Number of shutdowns
Not adjustable
D.061 No. of shut-downs in ign. flame
controller
Number of unsuccessful ignitions in the last attempt
Not adjustable
D.064 Avg. ignition time
In seconds
Not adjustable
D.065 Max. ignition time
In seconds
Not adjustable
D.067 Remaining anti-cycl. time for heating
In minutes
Not adjustable
D.068 Number of first start attempts
Number of unsuccessful ignitions
Not adjustable
D.069 Number of second start attempts
Number of unsuccessful ignitions
Not adjustable
D.070 3-way valve operation
0 = Normal operating mode
1 = Parallel operation (mid-position)
2 = Permanent heating mode position
0 = Normal
operating
mode
D.071 Max. heating target flow temp.
40 … 80 ℃
75 ℃
D.072 Pump overrun after cylinder charging
Adjustable from 0-10 minutes in increments of 1 minute
2 mins
D.073 Offset setting for comfort mode
Adjustable from -15 K to 5 K
0
D.074 Anti-legionella funct. with integrated cyl.
0 = Off
1 = On
1 = On
D.075 Max. cylinder charging time
20 - 90 min
45 mins
0020244995_02 ecoTEC pro Installation and maintenance instructions
0 = Relay
with disable
facility
Not adjustable
33
Appendix
Code
Parameter
Values or explanations
Default
setting
Own setting
D.076 Device Specific Number
Device specific number = DSN
7 = 24 (VUW GB 246/5-3 A); VUW 246/5-3 (H-GB)
ecoTEC pro 24
22 = 28 (VUW GB 286/5-3A); VUW 286/5-3 (H-GB)
ecoTEC pro 28; VUW 286/5-3 (P-GB) ecoTEC pro 28
26 = 30 (VUW GB 306/5-3)
D.077 DHW partial load
Adjustable cylinder charging output in kW
D.078 DHW max. flow temperature
Limit on cylinder charging temperature in °C
50 °C – 80 °C
Note
The chosen value must be at least 15 K or 15 °C above
the set cylinder target value.
75 °C
D.080 Heating operating hours
In hours (h)
Not adjustable
D.081 DHW operating hours
In hours (h)
Not adjustable
D.082 Heating burner starts
Number of burner start-ups
Not adjustable
D.083 DHW burner starts
Number of burner start-ups
Not adjustable
D.084 Maintenance in
Adjustment range: 0 to 3000 hrs and "---" for deactivated
„---”
D.088 Min. DHW flow rate
Start delay for hot water draw-off detection via impeller
(only products with integrated hot water generation)
0 = 1.5 l/min and no delay,
1 = 3.7 l/min and 2 sec. delay
1.5 l/min and
no delay
D.090 eBUS controller
Status of digital controller
Recognised, not recognised
Not adjustable
D.091 Status DCF77
Status of DCF with external temperature sensor connected
No reception
Reception
Synchronised
Valid
Not adjustable
D.092 actoSTOR communication status
actoSTOR module detection
0 = Not connected
1 = Connection error: No communication via PeBus,
actoSTOR module was previously detected
2 = Connection active
Not adjustable
D.093 Adjust Device Specific Number
Device Specific Number (DSN)
Setting range: 0 to 99
D.094 Clear fault history
Delete fault list
0 = No
1 = Yes
D.095 Software version: PeBUS participant
PCB (BMU)
Display (AI)
actoSTOR (APC)
HBI/VR34
D.096 Reset to factory settings?
Reset all adjustable parameters to factory setting
0 = No
1 = Yes
34
Not adjustable
Not adjustable
Installation and maintenance instructions ecoTEC pro 0020244995_02
Appendix
B
Status codes – Overview
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Statuscode
Meaning
S.00 Heating: No heat demand
Heating has no heat demand. The burner is off.
S.01 Heating mode: Fan startup
The fan start-up for heating mode is activated.
S.02 Heating mode: Pump
pre-run
The pump prerun for heating mode is activated.
S.03 Heating mode: Ignition
The ignition for heating mode is activated.
S.04 Heating mode: Burner
on
The burner for heating mode is activated.
S.05 Heating mode: Pump/fan
overrun
The pump/fan overrun for heating mode is activated.
S.06 Heating mode: Fan overrun
The fan overrun for heating mode is activated.
S.07 Heating mode: Pump
overrun
The pump overrun for heating mode is activated.
S.08 Heating mode: Anti-cycling time
The anti-cycling time for heating mode is activated.
S.10 DHW demand
The domestic hot water demand is activated.
S.11 DHW mode: Fan start-up
The fan start-up for domestic hot water mode is activated.
S.13 DHW mode: Ignition
The ignition for domestic hot water mode is activated.
S.14 DHW mode: Burner on
The burner for domestic hot water mode is activated.
S.15 DHW mode: Pump/fan
overrun
The pump/fan overrun for domestic hot water mode is activated.
S.16 DHW mode: Fan overrun
The fan overrun for domestic hot water mode is activated.
S.17 DHW mode: Pump overrun
The pump overrun for domestic hot water mode is activated.
S.20 DHW demand
The domestic hot water demand is activated.
S.21 DHW mode: Fan start-up
The fan start-up for domestic hot water mode is activated.
S.22 DHW mode: Pump prerun
The pump prerun for domestic hot water mode is activated.
S.23 DHW mode: Ignition
The ignition for domestic hot water mode is activated.
S.24 DHW mode: Burner on
The burner for domestic hot water mode is activated.
S.25 DHW mode: Pump/fan
overrun
The pump/fan overrun for domestic hot water mode is activated.
S.26 DHW mode: Fan overrun
The fan overrun for domestic hot water mode is activated.
S.27 DHW mode: Pump overrun
The pump overrun for domestic hot water mode is activated.
S.28 DHW anti-cycling time
The anti-cycling time for domestic hot water mode is activated.
S.30 No heat demand: Controller
Room thermostat blocks heating mode.
S.31 No heat demand: Summer mode
Summer mode is activated; there is no heat demand.
S.32 Waiting time deviation:
Fan speed
The waiting period for the fan start-up is activated.
S.34 Heating mode: Frost protection
The frost protection function for heating mode is activated.
S.39 Contact thermostat
triggered
The surface-mounted thermostat or the condensate pump has triggered.
S.40 Comfort protection active
The comfort protection mode is activated.
S.41 Water pressure too high
The system pressure is too high.
0020244995_02 ecoTEC pro Installation and maintenance instructions
35
Appendix
Statuscode
Meaning
S.42 Flue non-return flap
closed
Flue non-return flap return signal blocks burner operation (only in conjunction with the multi-functional
module) or condensate pump defective, heat demand is blocked.
S.46 Comfort protection: Minimum load, loss of flame
Comfort protection mode for flame loss at minimum load is activated.
S.53 Waiting time: Water
shortage
The product is within the waiting period of the modulation block/operating block function as a result of
a water deficiency (flow/return spread too large).
S.54 Waiting time: Water
shortage
Product is in the waiting period of the operation blocking function as a result of low water pressure
(temperature gradient).
S.57 Waiting time: Measuring
program
The product is within the waiting period as a result of the measuring programme.
S.58 Burner modulation limitation
The burner modulation limitation is activated.
S.61 Fault: Incorrect gas type
The coding resistor on the PCB does not match the entered gas group (see also F.92).
S.62 Adjust CO2
Set the CO2 content.
S.63 Fault: Check gas route
A fault message is activated. Check the gas route.
S.76 Service message: Check
water pressure
A service message is activated. Check the water pressure.
S.88 Purging programme is
running
The purge programme is activated.
S.92 Water circulation volume
self-test
The self-test for the water circulation volume is activated.
S.93 Flue gas measurement
not possible
Flue gas analysis is not currently possible.
S.96 Return temperature
sensor self-test
The self-test for the return temperature sensor is activated.
S.97 Water pressure sensor
self-test
The self-test for the water pressure sensor is activated.
S.98 Flow/return temperature
sensor self-test
The self-test for the flow/return temperature sensor is activated.
S.99 Vaillant self-test
The Vaillant self-test is activated.
C
Overview of fault codes
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Message
Possible cause
Measure
F.00 Interruption: Flow sensor
Flow temperature sensor defective or not connected
▶
Check: Flow temperature sensor, plug, cable harness, PCB.
F.01 Interruption: Return
sensor
Return temperature sensor defective or not connected
▶
Check: Return temperature sensor, plug, cable harness, PCB.
F.10 Short circuit: Flow
sensor
Flow temperature sensor defective or has short-circuited
▶
Check: NTC plug, cable harness, cable/housing, PCB, NTC
sensor.
F.11 Short circuit: Return
sensor
Return temperature sensor defective or has short-circuited
▶
Check: NTC plug, cable harness, housing, PCB, NTC sensor.
F.20 Safety switch-off: Temperature limiter
Maximum temperature at the
flow/return temperature sensor
is too high when the safety cutout function is operating using
the NTC
▶
Check: Flow temperature sensor (correct thermal connection),
cable harness, sufficient purging.
F.22 Safety switch-off: Low
water pressure
No/insufficient water in the
product or the water pressure is
too low
1.
Temperature spread too great.
Water circulation too low
▶
F.23 Safety switch-off:
Temp.spread too large
36
2.
Check: Plug, cable to heating pump or water pressure
sensor, water pressure sensor, heating pump.
Activate and purge check programme P.0.
Check: Plug, cable to heating pump/water pressure sensor,
air/insufficient water in the heating circuit, flow and return temperature sensor inverted, strainer in the hydraulic block, water
pressure sensor, heating pump (sufficient circulation, level 2:
D.19, D.14, non-return valve). Activate check programme P.0.
Installation and maintenance instructions ecoTEC pro 0020244995_02
Appendix
Message
Possible cause
Measure
F.24 Safety switch-off: Temp.
incr. too fast
Temperature increase too fast
▶
Check: Plug, cable to the heating pump, air/insufficient water
in the heating circuit, internal air vent (function), heating pump
(system pressure too low, temperature gradient too great on
heating flow, non-return valve). Activate check programme P.0.
F.25 Safety switch-off: Flue
temp. too high
flue gas temperature too high
▶
Check: Plug, safety cut-out plug, cable harness, cable to the
heating pump, internal air vent (function), flue gas route (blockage, adverse wind conditions, flue pipework too long), insufficient water in heating circuit, heating pump, activate check
programme P.0.
F.26 Fault: Fuel valve not
working
Gas valve assembly stepper
motor defective or not connected
▶
Check: Gas valve assembly stepper motor (plug, cable, passage for rinsing, voltage), multiple plug, cable harness.
F.27 Safety switch-off: Flame
simulation
Monitoring electrode reports an
incorrect flame
▶
Check: Gas pressure at upper test opening, monitoring electrode, PCB, gas solenoid valve.
F.28 Start-up failure: Ignit.
unsuccessful
Failure during start-up or ignition unsuccessful. Gas pressure
monitor or thermal cut-out has
been triggered.
▶
Check: Gas stopcock, gas flow pressure, gas valve assembly,
air intake pipe (blockage, loosened screw), condensate route
(blockage), multiple plug, cable harness, ignition transformer,
ignition cable, ignition plug, ignition electrode, monitoring electrode, electronics, earthing, CO₂ setting.
F.29 Operating failure: Ignit.
unsuccessful
Gas supply interrupted intermittently. Re-ignition failed.
▶
Check: Flue gas recirculation, condensate route (blockage),
earthing, cable to the gas valve assembly and electrode (loose
connection).
F.32 Fault: Fan
Fan defective or not connected
▶
Check: Plug, cable harness, fan (blockage, function, correct
speed), Hall sensor, PCB, flue gas route (blockage).
F.49 Fault: eBUS
Undervoltage on the eBUS
▶
Check: eBUS (overload, two power supplies with different polarities, short circuit).
F.61 Fault: Fuel valve actuation
The gas valve assembly cannot
be actuated
▶
Check: Cable harness, plug, gas valve assembly (rinse), PCB.
F.62 Fault: Fuel valve switchoff delay
Delayed switch-off sequence for
the gas valve after the flame is
extinguished
▶
Check: Gas valve, surface of the burner (dirt), plug, cable harness, PCB.
F.63 Fault: EEPROM
EEPROM faulty
Electronics, safety-relevant
sensor or cable defective
▶
▶
Replace: PCB.
F.64 Fault: Electronics/sensor
F.65 Fault: Electronics temp.
Electronics defective or too hot
due to external influences
1.
2.
F.67 Fault: Electronics/flame
Implausible flame signal
Check: Cable harness, flame monitor, PCB.
F.68 Fault: Flame signal unstable
Flame monitor reports an unstable flame signal
▶
▶
F.70 Fault: Invalid Device
Specific Number
Incorrect/missing Device
Specific Number or
incorrect/missing coding resistor
▶
If the display and PCB have been replaced, change the Device
Specific Number under D.93.
F.71 Fault: Flow sensor
Flow temperature sensor returns implausible values
▶
Check: Flow temperature sensor (correct thermal connection).
F.72 Fault: Flow/return sensor
Temperature difference
between flow and return
temperature sensor is too great
▶
Check: Flow temperature sensor/return temperature sensor
(function, correct thermal connection).
F.73 Fault: Water press.
sensor (signal too weak)
Water pressure sensor reports
that the water pressure is too
low
▶
Check: Water pressure, earth connection, cable, plug, water
pressure sensor (short circuit to GDN).
F.74 Fault: Water press.
sensor (signal too strong)
Water pressure too high
▶
Check: Water pressure (heating side, when heating pump
is not active), drain water if required, cable, water pressure
sensor (short circuit to 24/5 V).
F.75 Fault: Pump/ water
shortage
Insufficient pressure jump detected when starting the pump
1.
2.
0020244995_02 ecoTEC pro Installation and maintenance instructions
Check: Flow sensor, cable to the sensor, flame recording
sensor (e.g. ionisation electrode) for an unstable signal,
electronics.
Check: PCB.
If required, reduce the environmental temperature.
Check: Air ratio, gas flow pressure, condensate route (blockage), gas injector, ionisation flow (cable, electrode), flue gas
recirculation.
Check: Water pressure sensor, heating pump (blockage),
heating circuit (air, sufficient water volume), adjustable bypass, external expansion vessel (must be connected at the
return). Activate check programme P.0.
If a low loss header or heating pipes with a diameter greater
than 1 1/2 inch are installed, replace the 3/4-inch seal in the
heating flow with a screen. If required, install the F.75 service
set.
37
Appendix
Message
Possible cause
Measure
F.77 Fault: Flue non-ret.
valve/condens. pump
No flue non-return flap feedback; condensate pump overflow
▶
Check: Cable to VR40 accessory, flue non-return flap (wiring,
feedback switch), condensate pump, bridge from the surfacemounted thermostat, 2 in 7 multi-functional module (bridge).
F.78 Interrupt.: DHW outlet
sensor on ext. contr.
UK link box is connected
without the domestic hot water
temperature sensor being
bridged
1.
2.
Check: Accessory (configuration/electrical connection).
The unit displays a fault, but the unit has not malfunctioned.
F.83 Fault: NTC temp. gradient
Temperature difference
between flow and return
temperature sensor is too small
▶
Check: Flow/return temperature sensor (function, correct
thermal connection), sufficient water volume.
F.84 Fault: NTC temp. diff.
implausible
Temperature difference is implausible
▶
Check: Flow/return temperature sensor (correct thermal connection, sensors are inverted).
F.85 Fault: NTCs fitted incorrectly
Flow/return temperature sensors returning
incorrect/implausible values
▶
Check: Flow/return temperature sensor (correct thermal connection).
Communication fault
Communication fault between
the display and the PCB in the
electronics box
▶
Check: Cable/plug between the display and the PCB.
D
Check programmes – Overview
Prüfprogramme
Meaning
P.00 Purging
The internal pump is cyclically actuated. The heating circuit and the domestic hot water circuit are adaptively purged by automatically switching the circuits using the automatic air vent (the automatic air
vent's flap must be loose). The active circuit is shown in the display. Press
once to start purging
the heating circuit. Press
once to end the purge programme. Note: The purge programme runs for
7.5 min per circuit and then terminates. Purging the heating circuit: Prioritising diverter valve in heating position, actuation of internal pump for 9 cycles: 30 seconds on, 20 seconds off. Display: Active
heating circuit. Purging the domestic hot water circuit: After the above-mentioned cycles have run or
the right-hand selection button has been pressed again: Prioritising diverter valve in the domestic hot
water position, actuation of the internal pump as above. Display: Active hot water circuit.
P.01 Maximum load
After successful ignition, the product is operated at maximum heat input.
P.02 Minimum load
After successful ignition, the product is operated at minimum heat input.
P.06 Filling mode
The prioritising diverter valve is moved to the mid-position. The burner and pump are switched off (to
fill or drain the product).
38
Installation and maintenance instructions ecoTEC pro 0020244995_02
Appendix
E
Wiring diagrams
E.1
Product connection diagram with integrated hot water generation
X22
4
2
X41
1
2
3
4
5
6
3
4
2
15
12
13
X51
2
6
8
X20
X106
1
B.off
X2
RT
10
11
1
3
4
6
14
13
11
M
1
3
4
3
2
6
BUS
X106
9
18
7
17
8
X41
X90
8
4 PWM
5 Masse
BUS
X22
X30
X2
1 +24V
2 Hallsignal
Burner Off RT 24V
X31
X20
X35
7
7
5
17
3
4
16
X51
X40 X51
5
1
2
3
13
14
15
24V
4
12
12
230V~
24V
Fuse
X18
L
N
16
CH Pump
X18
T2
230V~
X1
X1
*
RT
L
N
X12
1
2
17
1
Main PCB
10
24 V DC room thermostat
2
Operator control panel PCB
11
Bus connection (digital room thermostat/controller)
3
12
Diverter valve
4
Outside temperature sensor, flow temperature
sensor (optional, external), DCF receiver
Circulation pump remote control
13
Water pressure sensor
5
Gas valve
14
Impeller sensor
6
Return temperature sensor
15
Warm start sensor
7
Flow temperature sensor
16
Internal pump
8
Fan
17
Ignition electrode
09
Contact thermostat/burner off
*
Depending on product type
0020244995_02 ecoTEC pro Installation and maintenance instructions
39
Appendix
F
Inspection and maintenance work
The table below lists the manufacturer requirements with respect to minimum inspection and maintenance intervals. If national regulations and directives require shorter inspection and maintenance intervals, you should observe these instead of
the intervals listed. Each time inspection and maintenance work is carried out, carry out the required preparatory and completion work.
#
Maintenance work
Interval
1
Check the tightness of the air/flue pipe, make sure that it is not damaged
and has been attached correctly, and check that it has been set up correctly
Annually
2
Removing dirt from the product and the vacuum chamber
Annually
3
Visually check the heat cell to ascertain its condition and detect any corrosion, rust or damage, and carry out maintenance work, if required
Annually
4
Checking the gas connection pressure at maximum heat input
Annually
5
Checking the CO₂ content and, if necessary, adjusting it (air index setting)
Annually
6
Recording the CO2 content (the air ratio)
Annually
7
Check that the connections/electrical plug connections have been connected correctly/function correctly (product must be voltage-free)
Annually
8
Check that the gas stopcock and service valves function correctly
Annually
9
Checking the condensate trap for dirt and cleaning it
Annually
10
Checking the pre-charge pressure of the expansion vessel
If required, at least every
2 years
11
Checking the insulating mats in the combustion area and replacing damaged insulating mats
If required, at least every
2 years
12
Cleaning the heat exchanger
If required, at least every
2 years
13
Check the burner for damage
If required, at least every
2 years
14
If the water volume is insufficient (domestic hot water) or the outlet temperature is insufficient, check the secondary heat exchanger
If required, at least every
2 years
15
Cleaning the filter in the cold water inlet
If required, at least every
2 years
16
Check the impeller sensor for dirt/damage
If required, at least every
2 years
17
Filling the heating installation
If required, at least every
2 years
18
Run the test operation on the product/heating installation including
domestic hot water generation (if available) and, if required, purge the
product/heating installation
Annually
19
Visually check the ignition and burner behaviour
Annually
20
Re-checking the CO₂ content (the air ratio)
If required, at least every
2 years
21
Check the product for gas, flue gas and water leaks
Annually
22
Completing inspection and maintenance work
Annually
40
22
28
29
19
30
Installation and maintenance instructions ecoTEC pro 0020244995_02
Appendix
G
Commissioning Checklist
Benchmark Commissioning and
Servicing Section
It is a requirement that the boiler is installed and commissioned to the
completed in full.
www.centralheating.co.uk
© Heating and Hotwater Industry Council (HHIC)
0020244995_02 ecoTEC pro Installation and maintenance instructions
41
Appendix
GAS BOILER SYSTEM COMMISSIONING CHECKLIST
This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating
compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference.
CONTROLS
Optimum start control
Fitted
Fitted
Fitted
Fitted
ALL SYSTEMS
Yes
Yes
CENTRAL HEATING MODE
OR
mbar
mbar
OR
COMBINATION BOILERS ONLY
Yes
Yes
DOMESTIC HOT WATER MODE
OR
mbar OR
mbar
Yes
Temperature
CONDENSING BOILERS ONLY
Yes
ALL INSTALLATIONS
AND
²
Ratio
AND
²
Ratio
Yes
Yes
Yes
Yes
42
Installation and maintenance instructions ecoTEC pro 0020244995_02
Appendix
SERVICE RECORD
It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed.
Service Provider
SERVICE 01
SERVICE 02
AND
AND
²%
²%
SERVICE 03
AND
AND
²%
²%
SERVICE 04
AND
AND
²%
²%
SERVICE 05
AND
AND
²%
²%
SERVICE 06
AND
AND
²%
²%
SERVICE 07
AND
AND
²%
²%
SERVICE 08
AND
AND
²%
²%
SERVICE 09
AND
AND
²%
²%
SERVICE 10
AND
AND
²%
²%
0020244995_02 ecoTEC pro Installation and maintenance instructions
AND
AND
²%
²%
43
Appendix
PRIOR TO CO AND COMBUSTION RATIO CHECK
The boiler manufacturer’s installation instructions should have been followed, gas type verified and gas
supply pressure/rate checked as required prior to commissioning.
As part of the installation process, especially where a flue has been fitted by persons other than the
boiler installer, visually check the integrity of the whole flue system to confirm that all components are
correctly assembled, fixed and supported. Check that manufacturer’s max. flue lengths have not been
exceeded and all guidance has been followed (e.g. Gas Safe Technical Bulletin TB008).
The flue gas analyser should be of the correct type, as specified by BS 7967
Prior to its use, the flue gas analyser should have been maintained and calibrated as specified by the
manufacturer. The installer must have the relevant competence for use of the analyser.
Check and zero the analyser IN FRESH AIR as per analyser manufacturer’s instructions.
NOTE
THE AIR GAS RATIO VALVE IS FACTORY
SET AND MUST NOT BE ADJUSTED
DURING COMMISSIONING UNLESS THIS
ACTION IS RECOMMENDED FOLLOWING
CONTACT WITH THE MANUFACTURER.
If any such adjustment is recommended and
further checking of the boiler is required the
installer/service engineer must be competent
to carry out this work and to use the flue gas
analyser accordingly.
If the boiler requires conversion to operate with
a different gas family (e.g. conversion from
natural gas to LPG) separate guidance will be
provided by the boiler manufacturer
SET BOILER TO MAXIMUM RATE
In accordance with boiler instructions, set boiler to operate at max. rate
(full load condition). Allow sufficient time for combustion to stabilise.
NOTE - Do not insert analyser probe during this period to avoid
possible “flooding” of sensor.
CARRY OUT FLUE INTEGRITY CHECK USING ANALYSER
Insert analyser probe into air inlet test point and allow readings to stabilise.
NOTE - where no air inlet test point is provided then a flue integrity check
with the analyser is not possible. The installer should verify that flue
integrity has been visually checked in accordance with the “Prior to
CO and combustion ratio check” box above before proceeding to the
“Check CO and combustion ratio at maximum rate” stage below.
VERIFY FLUE INTEGRITY
Analyser readings indicate that combustion products
and inlet air must be mixing. Further investigation of
the flue is therefore required.
Check that flue components are assembled, fixed
and supported as per boiler/flue manufacturer’s
instructions.
Check that flue and flue terminal are not obstructed.
NO
Is
O2 • 20.6%
and
CO2 < 0.2%
YES
Is
O2 • 20.6%
and
CO2 < 0.2%
YES
NO
TURN OFF APPLIANCE AND CALL
MANUFACTURER’S TECHNICAL HELPLINE
FOR ADVICE.
THE APPLIANCE MUST NOT BE
COMMISSIONED UNTIL PROBLEMS ARE
IDENTIFIED AND RESOLVED.
CHECK CO AND COMBUSTION RATIO AT MAX. RATE
With boiler still set at maximum rate, insert analyser probe into flue gas
sampling point. Allow readings to stabilise before recording.
NOTE - If no flue gas sampling point is present and the correct procedure is
not specified in the manual, consult boiler manufacturer for guidance.
NO
Check all seals around the appliance burner,
internal flue seals, door and case seals.
Rectify where necessary.
Is
CO less than
335ppm
and
CO/CO2 ratio less
than 0.004
Is
CO less than
350ppm and
CO/CO2 ratio
less than 0.004
YES
YES
SET BOILER TO MINIMUM RATE
In accordance with boiler instructions, set boiler to operate at minimum rate (to
minimum load condition). Allow sufficient time for combustion to stabilise.
NOTE - If manufacturer’s instructions do not specify how to set boiler to minimum
rate contact Technical Helpline for advice.
NO
CHECK CO AND COMBUSTION RATIO AT MINIMUM RATE
With boiler still set at minimum rate, insert analyser probe into flue gas sampling
point. Allow readings to stabilise before recording.
NOTE - If no flue gas sampling point is present and the correct procedure is not
specified in the manual, consult boiler manufacturer for guidance.
TURN OFF APPLIANCE AND CALL
MANUFACTURER’S TECHNICAL HELPLINE
FOR ADVICE.
THE APPLIANCE MUST NOT BE
COMMISSIONED UNTIL PROBLEMS ARE
IDENTIFIED AND RESOLVED. IF
COMMISSIONING CANNOT BE FULLY
COMPLETED, THE APPLIANCE MUST BE
DISCONNECTED FROM THE GAS SUPPLY IN
ACCORDANCE WITH THE GSIUR.
NOTE: Check and record CO and combustion ratio
at both max. and min. rate before contacting the
manufacturer.
44
NO
Is
CO less than
350ppm and
CO/CO2 ratio
less than 0.004
YES
BOILER IS OPERATING SATISFACTORILY
no further actions required.
Ensure test points are capped, boiler case is correctly replaced and
all other commissioning procedures are completed.
Complete Benchmark Checklist, recording CO and combustion ratio
readings as required.
Installation and maintenance instructions ecoTEC pro 0020244995_02
Appendix
H
Opening of the flue pipe
P
I
Q
Q
T
Q
S
Q
R
F
Q
D, E
G
O
C
A
I
M
B
L
N
N
H
H
M
J
K
H.1
Positioning of the opening of a fan-supported flue gas pipe
Installation site
Minimum dimensions
A
Directly below an opening, air bricks, opening windows, etc., that can be opened.
300 mm
B
Above an opening, air bricks, opening windows, etc., that can be opened.
300 mm
C
Horizontally to an opening, air bricks, opening windows, etc., that can be opened.
300 mm
D
Below temperature-sensitive building components, e.g. plastic gutters, down pipes or wastewater
pipes
75 mm
E
Below eaves
200 mm
F
Below balconies or car port roofs
200 mm
G
From vertical wastewater pipes or down pipes
150 mm
H
From external or internal corners
200 mm
I
Above floors, roofs or balconies
300 mm
J
From a surface facing a terminal
600 mm
K
From a terminal facing a terminal
1200 mm
L
From an opening in the car port (e.g. door, window) which leads into the dwelling
1200 mm
M
Vertical from a terminal on the same wall
1500 mm
N
Horizontal from a terminal on the same wall
300 mm
O
From the wall on which the terminal has been installed
0 mm
P
From a vertical structure on the roof
N/A
Q
Above the roof area
300 mm
R
Horizontal from adjacent windows on pitched or flat roofs
600 mm
S
Above adjacent windows on pitched or flat roofs
600 mm
T
Below adjacent windows on pitched or flat roofs
2000 mm
0020244995_02 ecoTEC pro Installation and maintenance instructions
45
Appendix
I
Horizontal terminal positioning
BS 5440-1 recommends that fanned flue chimney terminals should be positioned as follows:
a) at least 2 m from an opening in the building directly opposite, and
b) so that the products of combustion are not directed to discharge directly across a boundary if the products are likely to
cause a nuisance to a neighbour or discharge over a walkway or patio.
For IE see current issue of IS 813.
For boilers covered within this manual.
1) Dimensions D, E, F and G:
These clearances may be reduced to 25 mm without affecting the performance of the boiler. In order to ensure that the condensate plume does not affect adjacent surfaces the terminal should be extended as shown below.
Balcony/eaves
Gutter
Adequately secured
air/flue gas pipe
The flue pipe must
protrude beyond any overhang
2) Dimension H:
This clearance may be reduced to 25 mm without affecting the performance of the boiler. However, in order to ensure that
the condensate plume does not affect adjacent surfaces a clearance of 300 mm is preferred.
For 1 and 2 above you can use a flue gas management kit to enable the termination point to be positioned and directed away
from the building fabric.
J
Opening of the flue pipe below eaves and balconies
Balcony/eaves
Gutter
Adequately secured
air/flue gas pipe
46
The flue pipe must
protrude beyond any overhang
Installation and maintenance instructions ecoTEC pro 0020244995_02
Appendix
K
Technical data
Technical data – General
VUW 246/53 (H-GB)
ecoTEC pro
24
VUW 286/53 (H-GB)
ecoTEC pro
28
VUW 286/53 (P-GB)
ecoTEC pro
28
Designated country (designation in accordance
with ISO 3166)
GB (Great
Britain), IE
(Ireland)
GB (Great
Britain), IE
(Ireland)
GB (Great
Britain), IE
(Ireland)
Approved unit categories
II2H3P
II2H3P
II2H3P
Gas connection, boiler
side
15 mm
15 mm
15 mm
Flow/return heating connections, boiler side
22 mm
22 mm
22 mm
Hot and cold water connection, boiler side
G 3/4″
G 3/4″
G 3/4″
Expansion relief valve
connector (min.)
15 mm
15 mm
15 mm
Air/flue gas connection
60/100 mm
60/100 mm
60/100 mm
Condensate drain pipework (min.)
19 mm
19 mm
19 mm
G20 natural gas flow
pressure
2.0 kPa
(20.0 mbar)
2.0 kPa
(20.0 mbar)
G31 propane gas flow
pressure
Gas flow rate at 15 °C
and 1013 mbar (based on
hot water generation, if
applicable), G20
3.7 kPa
(37.0 mbar)
2.5 m³/h
2.9 m³/h
Gas flow rate at 15 °C
and 1013 mbar (based on
hot water generation, if
applicable), G31
Min. flue gas mass rate
(G20)
2.2 kg/h
2.47 g/s
2.47 g/s
Min. flue gas mass rate
(G31)
3.49 g/s
Max. flue gas mass rate
10.8 g/s
12.6 g/s
12.6 g/s
Min. flue gas temperature
40 ℃
40 ℃
40 ℃
Max. flue gas temperature
70 ℃
70 ℃
70 ℃
Approved gas-fired units
C13, C33,
C43, C53
C13, C33,
C43, C53
C13, C33,
C43, C53
30% efficiency
109.4 %
109.4 %
108 %
NOx class
6
6
6
SEDBUK (2005)
A
A
A
SEDBUK (2009)
(G20/G31)
89.3 %
89.3 %
89.3 %
Boiler dimension, width
440 mm
440 mm
440 mm
Boiler dimension, height
720 mm
720 mm
720 mm
Boiler dimension, depth
338 mm
338 mm
338 mm
Approx. net weight
38 kg
38 kg
38 kg
0020244995_02 ecoTEC pro Installation and maintenance instructions
47
Appendix
Technical data – G20 power/loading G20
VUW 246/53 (H-GB)
ecoTEC pro
24
VUW 286/53 (H-GB)
ecoTEC pro
28
Nominal heat output
range P at 50/30 °C
5.9
… 24.8 kW
6.9
… 25.9 kW
Nominal heat output
range P at 80/60 °C
5.2
… 23.0 kW
6.2
… 24.0 kW
Maximum heat output for
hot water generation
23.4 kW
27.2 kW
Maximum heat input for
hot water generation
23.7 kW
27.8 kW
Maximum heat input,
heating side
23.5 kW
24.5 kW
Minimum heat input
5.5 kW
6.6 kW
Heating adjustment range
5 … 19 kW
5 … 19 kW
Nominal heat input efficiency (stationary) at
40/30 °C
107.0 %
107.0 %
Nominal heat input efficiency (stationary) at
50/30 °C
106.0 %
106.0 %
Nominal heat input efficiency (stationary) at
60/40 °C
101.0 %
101.0 %
Nominal heat input efficiency (stationary) at
80/60 °C
98.0 %
98.0 %
Technical data – Power/loading G31
VUW 286/53 (P-GB)
ecoTEC pro
28
Nominal heat output
range P at 50/30 °C
9.0
… 25.3 kW
Nominal heat output
range P at 80/60 °C
8.2
… 24.0 kW
Maximum heat output for
hot water generation
27.2 kW
Maximum heat input for
hot water generation
27.8 kW
Maximum heat input,
heating side
24.5 kW
Minimum heat input
8.7 kW
Nominal heat input efficiency (stationary) at
40/30 °C
105.0 %
Nominal heat input efficiency (stationary) at
50/30 °C
103.0 %
Nominal heat input efficiency (stationary) at
60/40 °C
101.0 %
Nominal heat input efficiency (stationary) at
80/60 °C
98.0 %
48
Installation and maintenance instructions ecoTEC pro 0020244995_02
Appendix
Technical data – Heating
VUW 246/53 (H-GB)
ecoTEC pro
24
VUW 286/53 (H-GB)
ecoTEC pro
28
VUW 286/53 (P-GB)
ecoTEC pro
28
Maximum flow temperature
85 ℃
85 ℃
85 ℃
Max. flow temperature
adjustment range (default
setting: 75 °C)
30 … 80 ℃
30 … 80 ℃
30 … 80 ℃
Permissible total overpressure
0.3 MPa
(3.0 bar)
0.3 MPa
(3.0 bar)
0.3 MPa
(3.0 bar)
Minimum pressure for
full operation
0.08 MPa
(0.80 bar)
0.08 MPa
(0.80 bar)
0.08 MPa
(0.80 bar)
Expansion vessel capacity
10 l
10 l
10 l
Circulation water volume
(with reference to
ΔT= 20 K)
813 l/h
813 l/h
813 l/h
Approx. condensate rate
(pH value 3.5 to 4.0) in
50/30 °C heating mode
1.9 l/h
1.9 l/h
1.9 l/h
Remaining feed head of
pump (at nominal circulation water volume)
0.025 MPa
(0.250 bar)
0.025 MPa
(0.250 bar)
0.025 MPa
(0.250 bar)
Technical data – Hot water handling mode
VUW 246/53 (H-GB)
ecoTEC pro
24
VUW 286/53 (H-GB)
ecoTEC pro
28
VUW 286/53 (P-GB)
ecoTEC pro
28
Lowest water volume
2.0 l/min
2.0 l/min
2.0 l/min
Water volume (at
ΔT = 30 K)
11.0 l/min
13.4 l/min
13.4 l/min
Water volume (at
ΔT = 35 K)
9.6 l/min
11.1 l/min
11.1 l/min
Water volume (at
ΔT = 42 K)
8.0 l/min
9.3 l/min
9.3 l/min
Permitted overpressure
1.0 MPa
(10.0 bar)
1.0 MPa
(10.0 bar)
1.0 MPa
(10.0 bar)
Required connection
pressure
0.035 MPa
(0.350 bar)
0.035 MPa
(0.350 bar)
0.035 MPa
(0.350 bar)
Hot water output temperature range
35 … 65 ℃
35 … 65 ℃
35 … 65 ℃
VUW 246/53 (H-GB)
ecoTEC pro
24
VUW 286/53 (H-GB)
ecoTEC pro
28
VUW 286/53 (P-GB)
ecoTEC pro
28
Electric connection
230 V/50 Hz
230 V/50 Hz
230 V/50 Hz
Permissible connected
voltage
190 … 253 V
190 … 253 V
190 … 253 V
Built-in fuse (slow-blow)
2A
2A
2A
Min. electrical power consumption
35 W
35 W
35 W
Max. electrical power
consumption
50 W
80 W
80 W
Standby electrical power
consumption
<2W
<2W
<2W
Level of protection
IP X4 D
IP X4 D
IP X4 D
Technical data – Electrics
0020244995_02 ecoTEC pro Installation and maintenance instructions
49
Index
Index
6
60/100 mm diameter unit connection piece with offset,
installing .............................................................................. 15
8
80/125 mm diameter unit connection piece, installing ........ 15
A
Air index setting................................................................... 22
Air/flue pipe ......................................................................... 14
Air/flue pipe, installed ............................................................ 5
Article number ....................................................................... 9
Automatic air vent................................................................ 19
B
Burner anti-cycling time....................................................... 23
Burner anti-cycling time, resetting ....................................... 23
Burner anti-cycling time, setting .......................................... 23
Burner, checking ................................................................. 29
Burner, replacing ................................................................. 25
Bypass valve, setting........................................................... 24
C
Calling up, diagnostics codes ............................................. 23
Calling up, fault memory...................................................... 25
Carrying out, inspection work .............................................. 27
Carrying out, maintenance work.......................................... 27
CE label ................................................................................. 9
Check programmes ............................................................. 18
Checking, burner ................................................................. 29
Checking, CO₂ content ........................................................ 22
Checking, pre-charge pressure for the internal expansion
vessel .................................................................................. 30
Circulation pump ................................................................. 17
Cleaning, cold water inlet filter ............................................ 29
Cleaning, heat exchanger .................................................. 28
Clearing, fault memory ........................................................ 25
CO₂ content, checking......................................................... 22
CO₂ content, setting ............................................................ 22
Cold water connection......................................................... 13
Cold water inlet filter, cleaning ............................................ 29
Combustion air supply........................................................... 5
Comfort protection mode..................................................... 25
Compact thermal module, installing .................................... 29
Compact thermal module, removing ................................... 28
Competent person................................................................. 4
Completing, inspection work ............................................... 30
Completing, maintenance work ........................................... 30
Completing, repair work ...................................................... 27
Condensate drain pipework................................................. 14
Condensate siphon ................................................... 5, 20, 29
Condensate trap............................................................ 20, 29
Connecting, controller ......................................................... 16
Connection dimensions ....................................................... 10
Controller, connecting ......................................................... 16
Corrosion............................................................................... 6
D
Decommissioning ................................................................ 30
Decommissioning, temporarily ............................................ 30
Diagnostics codes, calling up .............................................. 23
Discharge pipe, expansion relief valve................................ 14
Display and setting options ................................................. 17
Disposal, packaging ............................................................ 30
Disposing of the packaging ................................................. 30
50
Documents ............................................................................ 8
Draining, product ................................................................. 30
E
Electricity ............................................................................... 5
Electronics box, closing....................................................... 15
Electronics box, opening ..................................................... 15
F
Fan, replacing...................................................................... 26
Fault codes.......................................................................... 25
Fault memory, calling up ..................................................... 25
Fault memory, deleting........................................................ 25
Fault messages ................................................................... 25
Filling ................................................................................... 19
Flue gas route ....................................................................... 5
Flue pipe equipment connection piece................................ 15
From the delivery point to the installation site ..................... 10
Front casing, closed .............................................................. 5
Frost ...................................................................................... 6
G
Gas connection value.......................................................... 20
Gas conversion ................................................................... 20
Gas ratio setting .................................................................. 20
Gas valve, replacing............................................................ 26
H
Handing over to the operator............................................... 24
Handling .............................................................................. 10
Heat exchanger, cleaning.................................................... 28
Heat exchanger, replacing .................................................. 26
Heating flow......................................................................... 13
Heating installation, purging ................................................ 20
Heating return...................................................................... 13
Hot water connection........................................................... 13
I
Identification plate ................................................................. 8
If you smell flue gas............................................................... 5
If you smell gas ..................................................................... 4
Inspection work, carrying out............................................... 27
Inspection work, completing ................................................ 30
Installation site................................................................... 5–6
Installer level ....................................................................... 17
Installer level, calling up ...................................................... 17
Installing, compact thermal module..................................... 29
Intended use.......................................................................... 4
Internal expansion vessel, replacing ................................... 27
Isolator devices ................................................................... 30
L
Leak-tightness ......................................................... 22, 27, 30
Liquefied petroleum gas ................................................ 12–13
Liquid gas ........................................................................ 5, 12
M
Mains connection ................................................................ 16
Maintenance interval, setting............................................... 23
Maintenance work, carrying out .......................................... 27
Maintenance work, completing............................................ 30
Minimum clearance ............................................................. 11
O
Open-flued operation............................................................. 5
Operating concept ............................................................... 17
P
PCB and display, replacing ................................................. 27
PCB or display, replacing .................................................... 27
Power supply....................................................................... 16
Installation and maintenance instructions ecoTEC pro 0020244995_02
Index
Pre-charge pressure for the internal expansion vessel,
checking .............................................................................. 30
Preparing, repair work ......................................................... 25
Pressure gauge ..................................................................... 8
Product dimensions............................................................. 10
Product, draining ................................................................. 30
Product, switching off .................................................... 18, 30
Product, switching on .......................................................... 18
Pump output, setting ........................................................... 24
Pump, remaining feed head ................................................ 24
Purging, heating installation ................................................ 20
Q
Qualification........................................................................... 4
R
Remaining feed head, pump ............................................... 24
Removing, compact thermal module................................... 28
Repair work, completing...................................................... 27
Repair work, preparing ........................................................ 25
Replacing the burner ........................................................... 25
Replacing, fan ..................................................................... 26
Replacing, gas valve ........................................................... 26
Replacing, heat exchanger.................................................. 26
Replacing, internal expansion vessel .................................. 27
Replacing, PCB and display................................................ 27
Replacing, PCB or display................................................... 27
S
Safety device......................................................................... 5
Schematic drawing ................................................................ 5
Scope of delivery................................................................... 9
Serial number ........................................................................ 9
Service message................................................................. 25
Setting, bypass valve .......................................................... 24
Setting, CO₂ content............................................................ 22
Setting, maintenance interval .............................................. 23
Setting, pump output ........................................................... 24
Side section, installing......................................................... 12
Side section, removing ........................................................ 12
Spare parts.......................................................................... 25
Status codes........................................................................ 17
Switching off ........................................................................ 30
Switching off, product .......................................................... 18
Switching on, product .......................................................... 18
T
Tool ....................................................................................... 6
Treating the heating water................................................... 18
Type of gas.......................................................................... 13
U
Unit connection piece for the air/flue pipe, 60/100 mm
diameter with offset ............................................................ 15
Unit connection piece for the air/flue pipe, 80/125 mm
diameter .............................................................................. 15
Unit connection piece, changing ......................................... 15
Unit connection piece, removing ......................................... 15
Unloading the box ............................................................... 10
V
Voltage .................................................................................. 5
W
Weight ................................................................................. 11
0020244995_02 ecoTEC pro Installation and maintenance instructions
51
0020244995_02
0020244995_02
28.03.2018
Supplier
Vaillant Ltd.
Belper
Derbyshire
Nottingham Road
Telephone 0330 100 3461
info@vaillant.co.uk
www.vaillant.co.uk
DE56 1JT
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