Vaillant ecoTEC plus VU GB 5-5 Series, ecoTEC plus VU GB 1006/5-5, ecoTEC plus VU GB 1206/5-5, ecoTEC plus VU GB 806/5-5 Installation And Maintenance Instructions Manual
Installation and maintenance instructions
Publisher/manufacturer
Vaillant GmbH
Berghauser Str. 40 D-42859 Remscheid
Tel. +492191 18 0 Fax +492191 18 2810
info@vaillant.de www.vaillant.de
ecoTEC plus
VU GB .../5‑5
GB, IE
Contents
Contents
1 Safety .................................................................... 4
1.1 Action-related warnings ......................................... 4
1.2 Intended use.......................................................... 4
1.3 General safety information .................................... 4
1.4 Regulations (directives, laws, standards) .............. 6
2 Notes on the documentation .............................. 7
2.1 Observing other applicable documents ................. 7
2.2 Storing documents................................................. 7
2.3 Validity of the instructions...................................... 7
2.4 Benchmark............................................................. 7
3 Product description............................................. 7
3.1 Design of the product............................................. 7
3.2 Information on the data plate................................. 8
3.3 CE marking ............................................................ 8
4 Set-up.................................................................... 8
4.1 Unpacking the product........................................... 8
4.2 Checking the scope of delivery.............................. 8
4.3 Product dimensions and connection
dimensions............................................................. 9
4.4 Minimum clearances and installation
clearances ............................................................. 9
4.5 Using the mounting template................................. 9
4.6 Wall-mounting the product..................................... 9
4.7 Removing/installing the front casing.................... 10
4.8 Removing/installing the upper casing.................. 10
4.9 Removing/installing the side section (as
required) .............................................................. 11
5 Installation.......................................................... 11
5.1 Gas installation .................................................... 11
5.2 Hydraulics installation.......................................... 12
5.3 Flue installation.................................................... 15
5.4 Electrical installation ............................................ 15
6 Operation............................................................ 18
6.1 Operating concept of the product ........................ 18
6.2 Live Monitor (status codes) ................................. 18
6.3 Test programmes................................................. 18
7 Start-up ............................................................... 18
7.1 Auxiliary service equipment................................. 18
7.2 Carrying out the initial start-up............................. 18
7.3 Checking and treating the heating water/filling
and supplementary water .................................... 18
7.4 Switching on the product ..................................... 19
7.5 Running the installation assistants ...................... 19
7.6 Restarting the installation assistants ................... 20
7.7 Calling up unit configuration and diagnostics
menu.................................................................... 20
7.8 Using check programmes.................................... 20
7.9 Reading off the filling pressure ............................ 20
7.10 Preventing low water pressure ............................ 20
7.11 Flushing the heating system for the first time
("cold") ................................................................. 21
7.12 Filling and purging the heating system ................ 21
7.13 Filling the condensate trap .................................. 21
7.14 Checking and adjusting the gas setting............... 22
7.15 Checking leak-tightness ...................................... 24
7.16 Thoroughly flushing the heating system
("hot")................................................................... 25
8 Adapting the unit to the heating
installation.......................................................... 25
8.1 Calling up diagnostics codes ............................... 25
8.2 Setting the partial heat load ................................. 25
8.3 Setting the pump overrun .................................... 25
8.4 Setting the maximum flow temperature ............... 25
8.5 Setting the return temperature control system .... 26
8.6 Burner anti-cycling time ....................................... 26
8.7 Setting the maintenance interval ......................... 26
8.8 Pump output (high-efficiency pump).................... 26
8.9 Handing the product over to the end user ........... 28
9 Inspection and maintenance ............................ 28
9.1 Observing inspection and maintenance
intervals ............................................................... 28
9.2 Procuring spare parts .......................................... 29
9.3 Using the function menu...................................... 29
9.4 Carrying out electronics self-tests ....................... 29
9.5 Removing the gas-air mixture unit....................... 29
9.6 Cleaning the heat exchanger............................... 31
9.7 Checking the burner ............................................ 31
9.8 Replacing the ignition and ionisation
electrodes ............................................................ 31
9.9 Cleaning the condensate trap.............................. 32
9.10 Installing the gas-air mixture unit......................... 32
9.11 Draining the product ............................................ 33
9.12 Completing inspection and maintenance work .... 33
10 Troubleshooting ................................................ 33
10.1 Contacting your service partner........................... 33
10.2 Calling up service messages............................... 33
10.3 Reading off the fault codes .................................. 33
10.4 Querying the fault memory .................................. 33
10.5 Resetting the fault memory.................................. 34
10.6 Performing diagnostics ........................................ 34
10.7 Using check programmes.................................... 34
10.8 Resetting parameters to factory settings ............. 34
10.9 Preparing the repair work .................................... 34
10.10 Replacing defective components......................... 34
10.11 Completing repair work........................................ 36
11 Decommissioning.............................................. 36
11.1 Decommissioning the product ............................. 36
12 Recycling and disposal..................................... 36
13 Customer service............................................... 36
Appendix ............................................................................ 37
A Installer level menu structure – Overview....... 37
B Overview of diagnostics codes........................ 39
C Inspection and maintenance work –
Overview............................................................. 41
D Status codes – Overview .................................. 42
E Overview of fault codes .................................... 43
2 Installation and maintenance instructions ecoTEC plus 0020134823_07
F Wiring diagram................................................... 45
G Initial start-up checklist..................................... 46
G.1 Initial start-up checklist ........................................ 46
H Commissioning Checklist................................. 49
I Position of the opening in the air/flue pipe ..... 52
I.1 Notes ................................................................... 52
I.2 Positioning of the opening of a fan-supported
flue system........................................................... 52
I.3 Horizontal terminal positioning ............................ 53
J Treating the heating water................................ 54
K Technical data.................................................... 55
Index ................................................................................... 57
Contents
0020134823_07 ecoTEC plus Installation and maintenance instructions 3
1 Safety
1 Safety
1.1 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 domestic hot water generation.
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
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
▶ Proceed in accordance with current tech-
nology.
1.3.2 Risk of injury due to the heavy weight of the product
The product must only be installed in installations that have system separation (plate heat
exchanger).
Depending on the unit 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 maintenance instructions
for the product and any other system components
– installing and setting up the product in ac-
cordance with the product and system approval
– compliance with all inspection and main-
tenance conditions listed in the instructions.
The product weighs over 50 kg.
▶ Make sure that the product is carried by at
least two people.
▶ Use suitable transport and lifting equip-
ment, in accordance with your risk assessment.
▶ Use suitable personal protective equip-
ment: Gloves, safety footwear, protective
goggles, protective helmet.
1.3.3 Risk of death due to lack of safety devices
The basic diagrams included in this document do not show all safety devices required
for correct installation.
▶ Install the necessary safety devices in the
installation.
▶ Observe the applicable national and inter-
national laws, standards and directives.
4 Installation and maintenance instructions ecoTEC plus 0020134823_07
Safety 1
1.3.4 Risk of death due to cabinet-type casing
Cabinet-type casing can give rise to dangerous situations when used on a product which
is operated with an open flue.
▶ Ensure that the product is supplied with
sufficient combustion air.
1.3.5 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 stopcock 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 Na-
tional Grid +44 (0) 800 111999 by telephone once you are outside of the building.
1.3.6 Risk of damage to the flexible gas pipe
The corrugated gas pipe may become damaged if weight is placed on it.
▶ Do not suspend the compact thermal
module on the flexible gas pipe, for
example during maintenance work.
1.3.7 Risk of death from leaks if the product is installed below ground level
▶ Make sure that liquid gas cannot escape
from the product or the gas pipe under any
circumstances.
1.3.8 Risk of death due to blocked or leaking flue gas routes
Installation errors, damage, tampering, impermissible installation sites or similar can cause
flue gas to escape and result in a risk of poisoning.
What to do if you smell flue gas in the property:
▶ Open all accessible doors and windows
fully to provide ventilation.
▶ Switch off the product.
▶ Check the flue gas routes in the product
and the flue gas diversions.
1.3.9 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.
Condition: Permitted B23 or B23P unit
types with condensate siphon (third-party
accessory)
– Water seal level: ≥ 200 mm
1.3.10 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).
1.3.11 Risk of poisoning caused by
insufficient combustion air supply
Condition: Open-flued operation
▶ Ensure that the air supply to the product's
installation room is permanently unobstructed and sufficient in accordance with the
relevant ventilation requirements.
Liquid gas accumulates at floor level. If the
product is installed below ground level, liquid
1.3.12 Risk of corrosion damage due to
unsuitable combustion and room air
gas may accumulate at floor level if there
are any leaks. In this case, there is a risk of
explosion.
Sprays, solvents, chlorinated cleaning
agents, paint, adhesives, ammonia compounds, dust or similar substances may lead
0020134823_07 ecoTEC plus Installation and maintenance instructions 5
1 Safety
to corrosion on the product and in the flue
system.
▶ 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.
1.3.13 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.
1.3.18 Risk of scalding from hot water
There is a risk of scalding at the domestic
hot water draw-off points if the domestic hot
water temperatures are greater than 60 °C.
Young children and elderly persons are particularly at risk, even at lower temperatures.
▶ Select a moderate set target temperature.
1.4 Regulations (directives, laws, standards)
▶ Observe the national regulations, stand-
ards, directives, ordinances and laws.
1.3.14 Risk of death from electric shock
There is a risk of death from electric shock if
you touch live components.
Before commencing work on the product:
▶ 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.
1.3.15 Risk of material damage caused by frost
▶ Do not install the product in rooms prone
to frost.
1.3.16 Risk of material damage caused by using an unsuitable tool
▶ Use the correct tool.
1.3.17 Risk of being burned or scalded by hot components
▶ Only carry out work on these components
once they have cooled down.
6 Installation and maintenance instructions ecoTEC plus 0020134823_07
Notes on the documentation 2
1
2
3
4
6
5
7
8
10
9
12
13
14
15
16
11
2 Notes on the documentation
2.1 Observing other applicable documents
▶ Always observe all the operating and installation instruc-
tions included with the system components.
2.2 Storing documents
▶ Pass these instructions and all other applicable docu-
ments on to the end user.
2.3 Validity of the instructions
These instructions apply only to:
Product article number
Article number
806 (VU GB 806/5‑5)
1006 (VU GB 1006/5‑5)
1206 (VU GB 1206/5‑5)
0010010767 41-044-68
0010010780 41-044-69
0010010791 41-044-70
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.
Gas Council
Number
3 Product description
3.1 Design of the product
3.1.1 Functional elements (806/5‑5)
1 Connection for the
air/flue pipe
2 Fan
3 Gas valve assembly
4 Connection for air in-
take pipe
5 Flue pressure switch
6 Return temperature
sensor
7 Safety cut-out (flue gas)
8 Water pressure sensor
9 Electronics box
10 Integral condensation
heat exchanger
11 Manometer
12 Flow temperature
sensor
13 Safety cut-out
14 Ignition electrode
15 Automatic air vent
16 Monitoring electrode
For more information visit www.centralheating.co.uk
0020134823_07 ecoTEC plus Installation and maintenance instructions 7
4 Set-up
1
2
3
6
7
5
4
8
10
9
12
13
14
15
16
11
3.1.2 Functional element (1006/5‑5 and 1206/5‑5)
Information on the
identification plate
IP (e.g. X4D) Level of protection
P Nominal heat output range
Q Heat input range
Meaning
Heating mode
Note
Make absolutely sure that the product is compatible with the gas group at the installation site.
3.3 CE marking
The CE marking shows that the products comply with the
basic requirements of the applicable directives as stated on
the data plate.
The declaration of conformity can be viewed at the manufacturer's site.
4 Set-up
For fault-free operation and a long service life for the
1 Connection for the
air/flue pipe
2 Fan
3 Gas pipe
4 Supply air connector
5 Flue pressure switch
6 Return temperature
sensor
7 Safety cut-out (flue gas)
8 Water pressure sensor
9 Electronics box
10 Integral condensation
heat exchanger
11 Manometer
12 Flow temperature
sensor
13 Safety cut-out
14 Ignition electrode
15 Automatic air vent
16 Monitoring electrode
3.2 Information on the data plate
The data plate is mounted on the underside of the product at
the factory.
Information on the
identification plate
Serial number for identification; 7th to 16th digits =
VU… Vaillant gas-fired wall-hung boiler for
ecoTEC plus Product designation
H, G20 – 20 mbar
(2.0 kPa)
Cat. (e.g. II
Types (e.g. C33) Gas-fired boiler types
PMS (e.g. 6 bar
(0.6 MPa))
T
(e.g. 85 °C) Max. flow temperature
max.
230 V 50 Hz Electric connection
(e.g. 260) W Max. electrical power consumption
) Unit category
2H3P
Meaning
product article number
heating
Gas group and gas connection pressure
as set at the factory
Permissible total overpressure
product, you must only install the product in installations with
system separation (plate heat exchanger).
4.1 Unpacking the product
1. Remove the product from its box.
2. 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
Number
1
1
1
1 Condensate discharge hose
1
1
1
1
1
1
1
1
1
1
Designation
Unit mounting bracket
Heat generator
Condensate trap
Mounting template
Enclosed documentation
Enclosed unit fastening
Bag with small parts
Gas connector
Service valve (1 1/2 inches), red handle
Service valve (1 1/2 inches), blue handle
Bag with seals for service valves
Expansion relief valve, 6 bar
R 1 straight-through gas valve
8 Installation and maintenance instructions ecoTEC plus 0020134823_07
Set-up 4
287
190
673
603
480
175
138
172 172
70
22
482
Ø25
49
G 1 1/4
960
477
680,5
1
2
3
4
5
6
7
CC
AB
4.3 Product dimensions and connection dimensions
4.4 Minimum clearances and installation clearances
A 350 mm (110/160 mm
diameter flue pipe)
At least 450 mm for
cascade design
B 400 mm
C Optional approx. 200
mm
D Clearance of 600 mm
in front of the product
for easy access during
maintenance work
▶ When using the accessories, observe the minimum clear-
ances/installation clearances.
Note
A lateral clearance is not required, however
you can also remove the side sections if there
is sufficient space at the side (approx. 200
mm) in order to facilitate maintenance or repair work.
▶ Where units are installed in cascade, observe the gradi-
ent of the flue pipe (approx. 50 mm/m).
It is not necessary to maintain a clearance between the
product and components made of combustible materials that
go beyond the minimum clearances.
4.5 Using the mounting template
1. Position the mounting template vertically over the in-
stallation site.
2. Secure the template to the wall.
3. Mark on the wall all the points required for your installa-
tion.
4. Remove the mounting template from the wall.
5. Drill all the holes required.
6. Make any breakthroughs necessary.
4.6 Wall-mounting the product
Condition: The load-bearing capacity of the wall is sufficient, The fixing ma-
terial may be used for the wall
▶ Wall-mount the product as described.
1 Wall duct for flue pipe
2 Flue pipe connection
3 Hanging bracket
4 Heating flow
0020134823_07 ecoTEC plus Installation and maintenance instructions 9
5 Condensate trap con-
nection
6 Gas connection
7 Heating return
Condition: The load-bearing capacity of the wall is not sufficient
▶ Ensure that wall-mounting apparatus on-site has a suf-
ficient 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.
4 Set-up
1
2
1
2
1
Condition: The fixing material may not be used for the wall
▶ Wall-mount the product as described using the permitted
fixing material provided on-site.
1. Install the hanging bracket (1) on the wall.
2. Suspend the product on the hanging bracket from
above using the suspension bracket.
4.7 Removing/installing the front casing
4.7.1 Removing the front casing
4.8 Removing/installing the upper casing
4.8.1 Removing the upper casing
1. Unscrew the screws (2).
2. Pull out the upper casing (1) towards the front.
4.8.2 Installing the upper casing
1. From above, place the upper casing
2. Use the screws (2) to secure the upper casing (1).
(1) on the product.
1. Undo the bolt (1).
2. Push in both retaining clips (2) so that the front casing
is released.
3. Pull the front casing forwards at the bottom edge.
4. Lift the front casing upwards from the bracket.
4.7.2 Installing the front casing
1. Place the front casing on the upper brackets.
2. Push the front casing onto the product until both retaining clips (2) snap into place at the front casing.
3. Secure the front casing by tightening the screw (1).
10 Installation and maintenance instructions ecoTEC plus 0020134823_07
Installation 5
4.9 Removing/installing the side section (as required)
4.9.1 Removing the side section
5 Installation
Danger!
Risk of explosion or scalding caused by
incorrect installation.
Mechanical stresses in the connection pipes
may lead to leaks.
▶ Make sure that the connection pipes are
free from mechanical stress when they
are installed.
Caution.
Risk of material damage caused by
residues in the pipelines.
Welding remnants, sealing residues, dirt or
other residues in the pipelines may damage
the product.
▶ Flush the heating installation thoroughly
before installing the product.
Caution.
Risk of material damage caused by
changes to the pipes that have already
been connected.
Caution.
Risk of material damage caused by mech-
anical deformation.
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.
▶ Always only remove one side section –
never both side sections at the same time.
1. Hinge the electronics box forward.
2. Remove the upper casing. (→ Page 10)
3. Hold on to the side section so that it cannot fall, and
unscrew the lower front and upper central screws from
the side section.
4. Hinge the side section slightly to the side and pull it out
towards the front.
4.9.2 Installing the side section
1. Push the side section into the bracket. When doing so,
and to prevent leaks, ensure that all straps on the side
section engage with the back panel.
2. Slide the side section to the rear.
3. Secure the side section using two screws in the front
lower area and in the upper central area.
4. Install the upper casing. (→ Page 10)
5. Hinge up the electronics box.
▶ Only bend connection pipes if they have
not yet been connected to the product.
Seals made of rubber-like materials may be subject to plastic
deformation, which can lead to pressure losses. We recommend using seals made of a paste-like fibre material.
5.1 Gas installation
5.1.1 Performing the gas installation
Caution.
Risk of material damage caused by incor-
rect gas installation.
Excessive test pressure may cause damage
to the gas valve.
▶ When checking the entire gas installation
for leak-tightness, the maximum permissible pressure at the gas valve is 7.5 kPa
(75 mbar).
Caution.
Risk of material damage caused by the
incorrect gas type.
Using the wrong gas type may cause a fault
shutdown of the product. Furthermore, ignition and combustion noise may occur in the
product.
▶ Only use the gas types in accordance with
the data plate.
0020134823_07 ecoTEC plus Installation and maintenance instructions 11
5 Installation
▶ Make sure that the existing gas meter is capable of
passing the rate of gas supply required.
▶ Remove the residues from the gas pipe by blowing
through the gas pipe beforehand.
▶ Make sure that the existing gas meter is capable of
passing the rate of gas supply required.
▶ Install an approved gas stopcock on the product using
the gas connector.
▶ Install the gas pipe on the gas stopcock such that it is
free from mechanical stress.
▶ Purge the gas pipe before start-up.
5.1.2 Checking the gas line for leak-tightness
▶ Check the entire gas line properly for leak-tightness.
5.1.3 Information on liquid gas operation
In the as-supplied condition, the product is preset for operation with the gas group indicated on the data plate.
5.1.4 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.
5.2 Hydraulics installation
Caution.
Risk of material damage due to high tem-
peratures.
Plastic pipes in the heating installation may
become damaged by overheating if a fault
occurs.
▶ When using plastic pipes, install a limit
thermostat on the heating flow.
Caution.
Risk of material damage due to heat trans-
fer during soldering.
▶ Only solder connectors if the connectors
are not yet screwed to the service valves.
▶ Please note that water above 150 mg/l CaCO₃ is classi-
fied as hard and the corresponding treatment is required
(→ Page 18).
The product should be connected using a Vaillant pump
group (accessories).
– High-efficiency pump
This pump group has a connection option for an expansion
vessel (right-hand connection) and an expansion relief valve
(left-hand connection). You can find information about available accessories from the Vaillant price list or from the contact address provided on the reverse of this document.
▶ When installing the pump group, observe the installa-
tion sequence for the insulation and the hydraulic pipes (
Pump group installation instructions).
▶ Note that the boiler pump must always be fitted in the
return line. Otherwise, this may lead to a malfunction in
the product.
When connecting several products in cascade operation, you
must install a non-return flap from the cascade connection
set in the flow line of each individual product.
A non-return flap from a third-party manufacturer must have
no more than 30 mbar pressure loss for a volume flow of
4.5 m³/h.
5.1.5 Using the correct gas type
Using the incorrect gas type 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.
12 Installation and maintenance instructions ecoTEC plus 0020134823_07
Installation 5
1
1
Ø 1 1/4"
5.2.1 Connecting the heating flow and heating return
1. In each case, insert a flat seal into the service valve
(Vaillant accessories).
2. Screw the service valves onto the flow and return con-
nection (1) of the pump group.
3. Screw the service valves to the customer's installation.
– Diameter of the heating line: 1 1/4″
5.2.2 Installing the expansion vessels
1. Install a sufficiently dimensioned expansion vessel at
the connection in the boiler circuit return (1) and in the
installation circuit.
– Connection to the pump group: 1/2″
– Large expansion vessel: ≥ 10 l
2. Check that the volumetric capacity of the expansion
vessel in the installation circuit is sufficient for the system volume.
5.2.3 Hydraulic connection
The manufacturer recommends installing the following components in addition to the specified plate heat exchanger for
the hydraulic system separation:
– A dirt filter installed on the installation side upstream of
the plate heat exchanger
– Heating-side cleaning connections for backwashing the
plate heat exchanger during maintenance work
To this end, various plate heat exchangers are available
as accessories, depending on the output of a product or
whether it is a cascade system. The pressure loss is adjusted to the pump groups that are offered as an accessory. The minimum circulation water volume in the unit circuit is only guaranteed if you use original accessories in the
unit circuit, provided that the maximum pressure losses in
the piping are not exceeded. The manufacturer therefore
urgently recommends that you only install original pump
groups.
Select the plate heat exchanger according to output.
Depending on the unit output, different remaining feed heads
(→ Page 26) are available at the boiler circuit's flow pipe.
Observe the following pressure losses (nominal volume flow
at ΔT=20 K):
Power Pressure loss
< 120 kW 86 mbar
(0.086 bar)
In conjunction with the hydraulic cascade
< 240 kW 96 mbar
(0.096 bar)
< 360 kW 76 mbar
(0.076 bar)
< 480 kW 82 mbar
(0.082 bar)
< 600 kW 87 mbar
(0.087 bar)
< 720 kW 92 mbar
(0.092 bar)
0020134823_07 ecoTEC plus Installation and maintenance instructions 13
5 Installation
min.
180
2
1
3
1
5.2.4 Connecting the condensate trap
Condensate forms in the product during combustion. The
condensate drain pipework routes the condensate to the
waste water connection.
The product is equipped with a condensate trap. The filling
height is 145 mm. The condensate trap collects any condensate that forms and feeds it into the condensate discharge pipe.
▶ Place the condensate trap on the underside of the
product on the condensate drain pipe and secure it using
the retaining clips.
▶ Leave installation space of at least 180 mm below the
condensate trap so that you can clean the condensate
trap in the event of maintenance work.
▶ Before you start up the product, fill the condensate trap
with water (→ Page 21).
▶ Check the connection point for leak-tightness
(→ Page 24).
5.2.5 Connecting the condensate discharge pipe
Note
The condensate drain pipework must have a
continuous fall (45 mm per metre) and should
whenever possible terminate at a suitable
drain point within the heated envelope of the
building that will remain frost free under long
periods of low external temperatures.
5.2.6 Connecting the expansion relief valve
Note
The product is delivered with a 6 bar expansion
relief valve, which must be installed on the
product and must be guided to a secure, but visible, point. The drain pipe on the expansion relief
valve must have a minimum diameter of 28 mm
and must only be used for this purpose.
1. Ensure that all components that are installed in the
heating installation are suitable for a max. operating
pressure of 6 bar.
▶ When making the condensate pipe connections ensure
that there is adequate branch ventilation and that there
can be no backflow of water into the boiler via the condensate pipe work.
▶ Check if a neutralising unit is required in accordance with
national regulations.
▶ Observe the local regulations on neutralising the con-
densate.
Note
You can obtain neutralisation with or without a
condensate pump as an accessory.
▶ If required, guide the drain hose (1) from the automatic
air vent into the tundish.
Danger!
Risk of scalding!
Heating water that leaks from the exit point of
the expansion relief valve may cause severe
scalds.
▶ Install the expansion relief valve drain to a
professional standard.
2. Connect the expansion relief valve (1).
Note
When selecting the expansion relief valve,
note the max. operating pressure of the heating installation.
14 Installation and maintenance instructions ecoTEC plus 0020134823_07
5.3 Flue installation
5.3.1 Air/flue pipes that can be connected
▶ When installing the air/flue pipe, observe the provisions
of the applicable national regulations.
Note
All products feature an 110/160 mm diameter
air/flue connection as standard.
You can find out which air/flue pipes may be used by consulting the enclosed set-up instructions for the air/flue system.
5.3.2 Installing the air/flue pipe
Caution.
Risk of poisoning due to escaping flue
gas.
Mineral-oil-based greases can damage the
seals.
▶ Instead of grease, use only water or com-
mercially available soft soap to aid installation.
Installation 5
Danger!
Risk of personal injury and material dam-
age due to unapproved air/flue pipes.
Vaillant boilers are certified only with Vaillant
original air/flue pipes. The use of other accessories may cause personal injury and material damage, as well as operating faults. For
installation type B23P, third-party accessories are also permitted (see the technical data
in the appendix).
▶ Only use Vaillant original air/flue pipes.
▶ If third-party accessories are permitted
for B23P, ensure that the flue pipe connections are properly routed, sealed and
secured against slipping out.
1. Install the flue pipe using the installation manual.
2. When installing the air/flue pipe, observe the provisions
of the applicable national regulations.
3. Route the flue pipe with a downward gradient so that
the condensate that accumulates can easily flow into
the condensate trap provided for it.
5.4 Electrical installation
Only qualified electricians may carry out the electrical installation.
Danger!
Risk of death from electric shock!
Power supply terminals L and N remain live
even if the on/off button is switched off:
▶ 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.
▶ Wait for at least 3 minutes until the capa-
citors have discharged.
▶ Check that there is no voltage.
0020134823_07 ecoTEC plus Installation and maintenance instructions 15
5 Installation
2
1
3
5.4.1 Opening/closing the electronics box
5.4.1.1 Opening the electronics box
1. Remove the front casing. (→ Page 10)
2. Hinge the electronics box (1) forward.
3. Undo the clips (3) from the brackets.
4. Hinge up the cover (2).
5.4.1.2 Closing the electronics box
1. Close the cover (2) by pushing downwards on the electronics box (1).
2. Ensure that all the clips (3) audibly click into the brackets.
3. Hinge the electronics box upwards.
5.4.2 Establishing the power supply
Caution.
Risk of material damage due to high con-
nected voltage.
At mains voltages greater than 253 V, electronic components may be damaged.
▶ Ensure that the nominal voltage of the
mains is 230 V (+10%/-15%) ~ 50 Hz.
5.4.3 Carrying out the wiring
Caution.
Risk of material damage caused by incor-
rect installation.
Mains voltage at the incorrect plug terminals
on the ProE system may destroy the electronics.
▶ Do not connect any mains voltage to the
eBUS terminals (+/-).
▶ Only connect the power supply cable to
the terminals marked for the purpose.
1. Route the supply lines of the components to be connected through the cable duct provided on the underside of
the product.
2. Use the strain reliefs provided.
3. Shorten the supply lines as necessary.
4. 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 ProE plug to the supply line.
9. Check whether all conductors are sitting mechanically
securely in the terminals of the ProE plug. Remedy this
if necessary.
10. Plug the ProE plug into the associated PCB slot.
11. Secure the cable in the electronics box using the strain
reliefs.
1. Observe all valid regulations.
2. Open the electronics box. (→ Page 16)
3. 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
4. Connect the product using a fixed connection and a
partition with a contact opening of at least 3 mm (e.g.
fuses or power switches).
5. Use a flexible line for the mains feed line, which is
routed through the cable duct into the product.
6. Carry out the wiring. (→ Page 16)
7. Observe the connection diagram (→ Page 45).
8. Screw the supplied ProE plug to a suitable, flexible
three-core mains connection cable which complies with
the relevant standards.
9. Close the electronics box. (→ Page 16)
10. Make sure that access to the mains connection is al-
ways available and is not covered or blocked.
16 Installation and maintenance instructions ecoTEC plus 0020134823_07
Installation 5
X18
230 V
X22
5.4.4 Connecting the pump group
1. Open the electronics box. (→ Page 16)
2. Carry out the wiring. (→ Page 16)
3. Use the strain reliefs provided.
4. Plug the ProE plug for the power supply cable into slot
X18.
5. Plug the ProE plug for the control cable into slot X22.
6. Close the electronics box. (→ Page 16)
5.4.5 Installing the control
▶ Install the control if necessary.
5.4.6 Connecting controls to the electronics
1. Open the electronics box. (→ Page 16)
2. Carry out the wiring. (→ Page 16)
3. If you connect a weather-compensated control or room
thermostat to the product via eBUS, bridge the input
24 V = RT (X100 or X106) if no bridge exists.
4. If you use a low-voltage control (24 V), connect this
instead of the bridge 24 V = RT (X100 or X106).
5. When connecting a limit thermostat (surface-mounted
thermostat) for underfloor heating, connect this instead
of the bridge (Burner off) at the ProE plug.
6. Close the electronics box. (→ Page 16)
Note
Due to the installed system separation, leave
the pump in the factory setting: Comfort
D.018
– Circulation pump
– External pump
– Cylinder charging pump
– Extraction hood
– External solenoid valve
– External fault signal
– Solar pump (not active)
– eBUS remote control (not active)
– Anti-legionella pump (not active)
– Solar valve (not active).
5.4.7.1 Using the VR 40 (2 in 7 multi-functional module)
1. Install the components in accordance with the respect-
ive instructions.
2. Select D.027 (→ Page 25) to actuate relay 1 on the
multi-functional module.
3. Select D.028 (→ Page 25) to actuate relay 2 on the
multi-functional module.
5.4.7.2 Using the flue non-return flap
For cascade operation, you must provide a flue non-return
flap for each product. Either use only electrical flue non-return flaps or use only mechanical flue non-return flaps for all
products in a cascade.
The electrical flue non-return flap is actuated by the VR 40
multi-functional module. The installation instructions for the
VR 40 describe how the flue non-return flap is activated. The
mechanical flue non-return flap has an integrated siphon,
which must be filled with water before starting up the unit.
You can omit the flue non-return flap if you can ensure that
the flue system is operated completely under negative pressure.
Condition: Operating with natural gas
▶ For smooth operation with natural gas and a flue non-re-
turn flap, use diagnostics code D.050 (→ Page 25) to increase the offset for the minimum fan speed to the fixed
value of 1500 rpm.
Condition: Operating with liquefied petroleum gas
▶ You must never raise the speed under D.050
(→ Page 25) any higher because a higher speed is
already being used when operating with liquid gas.
5.4.8 Actuating the circulation pump according to requirements
1. Connect the wiring in the same way as described
in "Connecting controllers to the electronic system
(→ Page 17)".
2. 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.
3. Plug the edge connector into the PCB slot X41.
5.4.7 Connecting additional components
You can use the multi-functional module to actuate two additional components.
The following components can be actuated:
0020134823_07 ecoTEC plus Installation and maintenance instructions 17
6 Operation
6 Operation
6.1 Operating concept of the product
The operating concept and the read-out and setting options
of the end user level are described in the operating instructions.
An overview of the read-out and setting options of the installer level can be found in the section "Overview of the
menu structure – Installer level" (→ Page 37).
6.1.1 Calling up the installer level
Caution.
Risk of material damage caused by incor-
rect handling.
Incorrect settings at installer level may cause
damage and operating faults to the heating
installation.
▶ You must only access the installer level if
you are an approved competent person.
Note
The installer level is protected against unauthorised access using a password.
1. Press and ("i") simultaneously.
◁ The following menu appears in the display.
2. Scroll using the or button, until the menu item
Installer level appears.
3. Press (OK) to confirm your selection.
◁ In the display, the text Enter code appears along
with the value 00.
4. Use or to set the value 17 (code).
5. Press (OK) to confirm your selection.
◁ The installer level appears with a selection of menu
items.
6.2 Live Monitor (status codes)
7 Start-up
7.1 Auxiliary service equipment
The following test and measuring equipment is required for
start-up:
– CO2analyser
– Digital or U-tube manometer
– Flat-blade screwdriver, small
– 2.5 mm hex key
7.2 Carrying out the initial start-up
Note
The complete heating system must be flushed
at least twice: Once with cold water and once
with domestic hot water in accordance with the
following instructions (→ section "Flushing the
heating installation for the first time")
Initial start-up must be carried out by a customer service
technician or an authorised competent person using the firstcommissioning-checklist and the commissioning checklist.
The first-commissioning-checklist and the commissioning
checklist (→ Page 49) in the appendix for the installation instructions must be filled out and stored carefully along with
the product documentation.
Initial start-up checklist (→ Page 46)
▶ Carry out the initial start-up using the checklist and the
commissioning checklist in the appendix.
▶ Fill out and sign the checklists.
7.3 Checking and treating the heating water/filling and supplementary water
Caution.
Risk of material damage due to poor-qual-
ity heating water
▶ Ensure that the heating water is of suffi-
cient quality.
Menu → Live Monitor
Status codes in the display provide information on the product's current operating status.
Status codes – Overview (→ Page 42)
6.3 Test programmes
As well as the installation assistants, you can also call up the
test programmes for start-up, maintenance and troubleshooting.
Menu → Installer level Test programmes
There you will find the Check programmes (→ Page 20),
in addition to the Function menu, an Electronics self-test
and the Gas family check.
▶ Before filling or topping up the installation, check the
quality of the heating water.
Checking 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.
▶ Use a magnetic rod to check whether it contains mag-
netite (iron oxide).
▶ If you ascertain that it contains magnetite, clean the in-
stallation and apply suitable corrosion-protection measures, or fit a magnet 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 installa-
tion and treat the heating water.
▶
Ensure that oxygen cannot get into the heating water.
Checking the filling and supplementary water
▶ Before filling the installation, measure the hardness of the
filling and supplementary water.
18 Installation and maintenance instructions ecoTEC plus 0020134823_07
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