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Vaillant ecoFIT sustain system Installation Manual
Installation and maintenance instructions
ecoFIT sustain
615 - 630
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
7.10
Checking the gas flow rate .................................. 17
7.11
Checking and adjusting the gas settings ............. 17
1
Safety .................................................................... 3
7.12
Checking leak-tightness ...................................... 19
1.1
Action-related warnings ......................................... 3
8
1.2
Intended use .......................................................... 3
Adapting the unit to the heating
installation.......................................................... 19
1.3
General safety information .................................... 3
8.1
Burner anti-cycling time ....................................... 19
1.4
Regulations (directives, laws, standards) .............. 5
8.2
Setting the pump output....................................... 20
2
Notes on the documentation .............................. 6
8.3
Setting the bypass valve...................................... 21
2.1
Observing other applicable documents ................. 6
8.4
Setting the hot water temperature ....................... 21
2.2
Storing documents................................................. 6
9
Handing the product over to the end user ...... 21
2.3
Validity of the instructions ...................................... 6
10
Troubleshooting ................................................ 21
Benchmark............................................................. 6
10.1
Eliminating faults.................................................. 21
3
Product description............................................. 6
10.2
Procuring spare parts .......................................... 21
3.1
Compartment Ventilation ....................................... 6
10.3
Calling up and clearing the fault memory ............ 22
3.2
Information on the data plate ................................. 6
10.4
Resetting parameters to factory settings ............. 22
3.3
Functional elements: Pure boiler ........................... 7
10.5
Preparing the repair work .................................... 22
3.4
CE label ................................................................. 7
10.6
Replacing defective components......................... 22
4
Set-up.................................................................... 7
10.7
Checking the product for leak-tightness .............. 24
4.1
Transporting the unit.............................................. 7
11
Inspection and maintenance ............................ 24
4.2
Unpacking the product........................................... 7
11.1
Using original seals.............................................. 24
4.3
Checking the scope of delivery.............................. 7
11.2
4.4
Dimensions ............................................................ 8
Observing inspection and maintenance
intervals ............................................................... 24
4.5
Minimum clearances.............................................. 8
11.3
Checking the CO₂ content ................................... 24
4.6
Clearance from combustible components ............. 8
11.4
Setting the CO₂ content ....................................... 25
4.7
Using the mounting template ................................. 8
11.5
Removing the gas-air mixture unit....................... 25
4.8
Wall-mounting the product..................................... 8
11.6
Cleaning the heat exchanger............................... 26
4.9
Removing/installing the front casing...................... 9
11.7
Checking the burner ............................................ 26
4.10
Removing/installing the side section ..................... 9
11.8
Checking the ignition electrode ........................... 26
5
Installation.......................................................... 10
11.9
Cleaning the condensate trap.............................. 26
5.1
Checking the gas meter....................................... 10
11.10
Installing the gas-air mixture unit ......................... 27
5.2
Gas and water connections ................................. 10
11.11
Draining the product ............................................ 27
5.3
Connecting the drain pipework for the
expansion relief valve .......................................... 11
11.12
Checking the admission pressure of the
expansion vessel ................................................. 27
5.4
Connecting the condensate discharge pipe ........ 11
11.13
Completing inspection and maintenance work .... 27
5.5
Electrical installation ............................................ 12
11.14
Checking the product for leak-tightness .............. 27
6
Operation............................................................ 14
12
Decommissioning the product ......................... 27
6.1
Operating concept ............................................... 14
13
Customer service............................................... 27
6.2
Installer level overview......................................... 14
6.3
Calling up the installer level ................................. 14
6.4
Live Monitor (status codes) ................................. 14
6.5
Using check programmes .................................... 14
7
Start-up ............................................................... 15
7.1
Carrying out the initial start-up............................. 15
7.2
Checking the type of gas ..................................... 15
7.3
Checking the factory setting ................................ 15
7.4
Checking and treating the heating water/filling
and supplementary water .................................... 15
7.5
Avoiding danger arising from insufficient water
pressure............................................................... 16
7.6
2.4
Appendix ............................................................................ 28
A
Overview of diagnostics codes ........................ 28
B
Status codes – Overview .................................. 31
C
Overview of fault codes .................................... 32
D
Wiring diagram: Pure boiler.............................. 35
E
Wiring diagram: Pure boiler (30 kW)................ 36
F
Inspection and maintenance work ................... 37
G
Position of the opening in the air/flue pipe ..... 38
G.1
Positioning of the opening of a fan-supported
flue gas pipe ........................................................ 38
G.2
Horizontal terminal positioning ............................ 39
H
Commissioning Checklist................................. 40
Switching on the product ..................................... 16
I
Technical data.................................................... 44
7.7
Filling and purging the heating installation .......... 16
Index ................................................................................... 46
7.8
Filling the condensate trap .................................. 17
7.9
Filling the hot water circuit ................................... 17
2
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Safety 1
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
1.2
– 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 this
document shall be considered improper use.
Any direct use in industrial or commercial
processes is also deemed to be improper.
Caution.
Improper use of any kind is prohibited.
1.3
General safety information
Warning.
Risk of minor personal injury
1.3.1 Risk caused by inadequate
qualifications
Caution.
Risk of material or environmental
damage
The following work must only be carried out
by competent persons who are sufficiently
qualified to do so:
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 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.
The use of the product in vehicles, such as
mobile homes and caravans, is not classed
as intended use. Units that are not classed
as vehicles are those that are installed in
a fixed and permanent location (known as
"fixed installation").
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
–
–
–
–
–
–
–
Set-up
Dismantling
Installation
Start-up
Inspection and maintenance
Repair
Decommissioning
▶ Proceed in accordance with current technology.
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.
0020277252_00 ecoFIT sustain Installation and maintenance instructions
3
1 Safety
▶ 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 telephone once you are outside of the building.
1.3.7 Risk of death due to lack of safety
devices
The schematic drawings included in this document do not show all safety devices required for correct installation.
▶ Install the necessary safety devices in the
system.
1.3.3 Risk of death from escaping flue gas
▶ Observe the applicable national and interIf you operate the product with an empty connational laws, standards and guidelines.
densate trap / siphon, then flue gas may escape into the room air.
1.3.8 Risk of poisoning and burns caused
by escaping hot flue gases
▶ In order to operate the product, ensure that
the condensate trap / siphon is always full. ▶ Only operate the product if the air/flue pipe
has been completely installed.
1.3.4 Risk of death due to blocked or
▶ With the exception of short periods for
leaking flue gas routes
testing purposes, only operate the product
Installation errors, damage, tampering, unauwhen the front casing is installed and
thorised installation sites or similar can cause
closed.
flue gas to escape and result in a risk of poisoning.
1.3.9 Risk of being burned or scalded by
hot components
What to do if you smell flue gas in the property:
▶ Only carry out work on these components
once they have cooled down.
▶ Open all accessible doors and windows
fully to provide ventilation.
1.3.10 Risk of injury due to the heavy weight
▶ Switch off the product.
of the product
▶ Check the flue gas routes in the product
▶ Make sure that the product is transported
and the flue gas diversions.
by at least two people.
1.3.5 Risk of death due to explosive and
1.3.11 Risk of corrosion damage due to
flammable materials
unsuitable combustion and room air
▶ Do not use the product in storage rooms
Sprays, solvents, chlorinated cleaning
that contain explosive or flammable subagents, paint, adhesives, ammonia comstances (such as petrol, paper or paint).
pounds, dust or similar substances may lead
1.3.6 Risk of death from electric shock
to corrosion on the product and in the flue
system.
There is a risk of death from electric shock if
you touch live components.
Before commencing work on the product:
▶ Unplug the mains plug.
▶ Or disconnect the product from the power
supply by switching off all power supplies
(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 capacitors have discharged.
▶ Check that there is no voltage.
4
▶ 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.
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Safety 1
1.3.12 Risk of material damage caused by
frost
▶ Do not install the product in rooms prone
to frost.
1.3.13 Risk of material damage caused by
using an unsuitable tool
▶ Use the correct tool.
1.4
Regulations (directives, laws,
standards)
▶ Observe the national regulations, standards, directives, ordinances and laws.
0020277252_00 ecoFIT sustain Installation and maintenance instructions
5
2 Notes on the documentation
2
2.1
▶
2.2
▶
2.3
Notes on the documentation
3
Observing other applicable documents
3.1
You must observe all the operating and installation instructions included with the system components.
Compartment Ventilation
The boilers are very high efficiency appliances.
As a consequence the heat loss from the appliance casing
during operation is very low.
Storing documents
Compartment ventilation is not required as the products are
only certified, and can only be fitted with a concentric flue
system.
Pass these instructions and all other applicable documents on to the system operator.
Validity of the instructions
3.2
These instructions apply only to:
Information on the data plate
The data plate is mounted on the underside of the product at
the factory.
Product article number
Article number
Gas Council
Number
VU 156/6-3 (H-GB)
ecoFIT sustain 615
0010025271
41-694-30
VU 186/6-3 (H-GB)
ecoFIT sustain 618
0010025272
41-694-31
VU 306/6-3 (H-GB)
ecoFIT sustain 630
0010025273
41-694-32
2.4
Product description
The data plate keeps record of the country in which the
product is to be installed.
Information on the
data plate
Barcode with serial number
Serial number
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.
Meaning
For quality control purposes; 3rd and 4th
digits = year of production
For quality control purposes; 5th and 6th
digits = week of production
For identification purposes; 7th to 16th
digits = product article number
For quality control purposes; 17th to 20th
digits = place of manufacture
ecoFIT sustain
Product designation
2H, G20 – 2 kPa (20
mbar)
Factory setting for gas type and gas
connection pressure
Cat.
Unit category
Condensing technology
Efficiency class of the boiler in accordance with EC Directive 92/42/EEC
Type: Xx3(x)
Permissible flue gas connections
PMS
Maximum water pressure in heating
mode
PMW
Maximum water pressure in domestic hot
water mode
V/Hz
Electric connection
W
Max. electrical power consumption
IP
IP rating
Heating mode
Domestic hot water generation
For more information visit www.centralheating.co.uk
6
Pn
Nominal heat output range in heating
mode
Pnc
Nominal heat output range in heating
mode (condensing technology)
P
Nominal heat output range in domestic
hot water mode
Qn
Nominal heat input range in heating
mode
Qnw
Nominal heat input range in domestic hot
water mode
Tmax.
Max. flow temperature
NOx
NOx class for the product
Code (DSN)
Specific product code
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Set-up 4
Information on the
data plate
3.4
Meaning
CE label
Read the instructions.
GC no.
3.3
10
Gas council number
The CE label shows that the products comply with the basic
requirements of the applicable directives as stated on the
identification plate.
Functional elements: Pure boiler
The declaration of conformity can be viewed at the manufacturer's site.
11
12
9
4
4.1
8
7
13
6
Transporting the unit
Important: With regard to the regulations of 1992 concerning the manual handling of loads, the unit exceeds the
weight that can be lifted by a single person.
4.1.1
14
5
▶
▶
4
▶
3
▶
15
▶
2
▶
▶
1
17
16
▶
1
Electronics box
10
Fan/gas-air mixture
4.2
2
11
3
Heating circuit expansion relief valve
Condensate siphon
1.
2.
4
Flue pipe
5
Pressure sensor
Supply air test point
(for the upper air/flue
connection)
Flue gas analysis point
(for the upper air/flue
connection)
Primary heat exchanger
12
7
Flue gas analysis point
(for the rear air/flue
connection)
Ignition transformer
13
15
Heating expansion
vessel
Purging hose
8
Gas valve assembly
16
Heating pump
9
Air intake pipe
17
Bypass
14
0020277252_00 ecoFIT sustain Installation and maintenance instructions
Unloading the box from the delivery van
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.
Unpacking the product
Remove the product from its box.
Remove the protective film from all of the product's
components.
4.3
▶
General
Hold the load as close as possible to your body. Avoid
rotational movements. 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 suitable non-slip protective gloves in order to protect your hands against sharp edges. Ensure that you are
carrying the load securely.
If required, get somebody to assist you in this.
4.1.2
▶
▶
▶
6
Set-up
Checking the scope of delivery
Check that the scope of delivery is complete and intact.
Quantity
Description
1
Heat generator
1
Hanging bracket
1
Flexible condensate drain pipework
4
3/4" seals
3
1/2" seals
2
Service valve
1
Gas isolator cock
2
Connection pipe (heating flow and return)
7
4 Set-up
4.4
4.5
Description
1
Gas pipe
1
Expansion relief valve discharge pipe
1
Installation template
1
Enclosed documentation
Minimum clearances
A
Quantity
Dimensions
C
2
D
3
B
1
C
121
96
295
Minimum clearance
123
185
123
76
390
150
4
4.6
A
150 mm (top air/flue gas connection)
20 mm (rear air/flue connection)
B
150 mm
C
5 mm
(70 mm, if the side sections have to be removed)
D
600 mm
Clearance from combustible components
It is not necessary to maintain a clearance between the
product and components made of combustible materials that
go beyond the minimum clearances .
4.7
700
▶
4.8
Using the mounting template
Use the mounting template to ascertain the locations at
which you need to drill holes.
Wall-mounting the product
34
Note
If you are using the rear air/flue connection, install the air/flue pipe before you wall-mount the
product.
150
220
1
Heating flow
2
Gas connection
3
Heating return
5
4
5
Connection on the back
of the air/flue pipe
Connection on the top
of the air/flue pipe
1.
2.
8
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.
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Set-up 4
Conditions: The load-bearing capacity of the wall is sufficient, The fixing
material may be used for the wall
▶
4.10
4.10.1 Removing the side section
Wall-mount the product as described.
Caution.
Risk of material damage caused by mechanical deformation.
Conditions: The load-bearing capacity of the wall is not sufficient
▶
▶
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.
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.
▶
Conditions: The fixing material may not be used for the wall
▶
Wall-mount the product as described using the permitted
fixing material provided on-site.
4.9
Removing/installing the front casing
4.9.1
Removing the front casing
Removing/installing the side section
Always remove only one side section –
never both side sections at the same time.
Note
If there is sufficient lateral clearance (at least
70 mm), you can remove the side section to facilitate maintenance or repair work.
C
C
1
A
B
2x
1
B
1.
2.
3.
4.
Undo the two screws (1).
Gently press the front casing backwards in the centre
so that the latching lug is released.
Pull the front casing forwards at the bottom edge.
Lift the front casing upwards from the bracket.
4.9.2
▶
Installing the front casing
Refit the components in the reverse order.
1
D
A
1.
2.
3.
Tilt the electronics box forward.
Hold on to the side section so that it cannot fall and
unscrew both screws (1), one from the top and one
from the bottom.
Tilt the side section to the outside and move it downwards and out.
4.10.2 Installing the side section
▶
0020277252_00 ecoFIT sustain Installation and maintenance instructions
Refit the components in the reverse order.
9
5 Installation
5
Installation
Note
Apply heat insulation to the water pipes to the
boiler outlet and to the installation.
Danger!
Risk of scalding and/or damage due to
incorrect installation leading to escaping
water.
Preliminary work
1. Check that the system volume and the volumetric capacity of the expansion vessel are compatible.
▽ If the volume of the expansion vessel is insufficient
for the installation.
▶ Install an additional expansion vessel in the heating return, as close to the product as possible.
▶ Install a non-return valve at the product's outlet
(heating flow).
2. Ensure that the installation has the following components:
Mechanical stresses in the connection pipes
may lead to leaks.
▶
Ensure that there is no mechanical stress
when installing the connection pipes.
Caution.
Risk of material damage caused by
residues in the pipelines.
Working materials
Welding remnants, sealing residues, dirt or
other residues in the pipelines may damage
the product.
▶
A cold water stopcock for the unit
A gas stopcock for the unit
A filling and draining device in the heating installation
Flush the heating installation thoroughly
before installing the product.
3
5.1
▶
5.2
Checking the gas meter
2
Make sure that the existing gas meter is capable of
passing the rate of gas supply required.
1
Gas and water connections
Caution.
Risk of damage caused by incorrect gas
connection installation.
Excess test pressure or operating pressure
may cause damage to the gas valve.
▶
Check the leak-tightness of the gas valve
using a maximum pressure of 11 kPa
(110 mbar).
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.
▶
1
2
If you use non-diffusion-tight plastic pipes
in the heating installation, ensure that no
air gets into the heat generator circuit.
Heating flow connection, G3/4
Gas connection, G1/2
3
Heating return connection, G3/4
1.
Connect the water and gas connections in accordance
with the applicable standards.
2.
3.
Purge the gas pipe before start-up.
Check whether the connections (→ Page 19) are leaktight.
Caution.
Risk of material damage due to heat transfer during soldering.
▶
10
Only solder connectors if the connectors
are not yet screwed to the service valves.
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Installation 5
5.3
Connecting the drain pipework for the
expansion relief valve
▶
▶
For any installation the condensate must be free flowing
and not be possible for air back-pressure to prevent water flow.
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.
You can find further information in specification "BS 6798"
for installing and maintaining gas-fired boilers with a nominal
heat input below 70 kW.
5.4.1
1
▶
▶
Condensate drainage systems
5.4.1.1 Internal soil and vent pipe
Ensure that the pipeline is visible.
The pipe must have a continuous fall and be routed to a
position so that any discharge of water, possibly boiling,
or steam cannot create any danger to persons, damage
to property or external electrical components and wiring.
◁ The piping must be installed in such a way that you
can see when water drips out.
5.4
Ø19mm
min
Connecting the condensate discharge pipe
5.4.1.2 External soil and vent pipe
1
L = 3m max
2
▶
▶
▶
Ø19mm
min
Follow the instructions listed here and observe the legal
and local regulations on condensate discharge.
Use PVC or any other material that is suitable for draining the non-neutralised condensate.
If you cannot guarantee that the materials from which the
drain pipework is made are suitable, install a system for
neutralising the condensate.
Ø30mm
5.4.1.3 External termination into a gulley or hopper
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.
▶
▶
▶
Connect the condensate traps (1). Use the supplied drain
hose (2) for this.
Connect a condensate discharge pipe (21.5 mm, not
included in the scope of delivery) to the drain hose (2).
During installation remove all burrs 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.
0020277252_00 ecoFIT sustain Installation and maintenance instructions
L = 3m max
Ø19mm
min
Ø30mm
11
5 Installation
5.4.1.4 Internal termination into combined sink
waste
5.4.1.7 External termination into rain water down
pipe
Ø19mm
min
Ø19mm
min
Ø30mm
Ø30mm
5.4.1.5 Internal termination downstream of sink
waste
5.5
Electrical installation
Danger!
Risk of death from electric shock!
Continuous voltage is present at power supply terminals L and N even when the unit is
switched off using the standby button.
Ø19mm
min
▶
▶
Ø30mm
Switch off the power supply.
Secure the power supply against being
switched on again.
Only qualified electricians may carry out the electrical installation.
5.5.1
Opening the electronics box
5.4.1.6 External termination into soakaway
A
L = 3m max
25mm
min
300mm
min
400mm min
Ø100mm
500mm min
Ø19mm
min
B
Ø30mm
B
▶
12
Follow the instructions in the specified sequence.
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Installation 5
5.5.2
▶
Closing the electronics box
4.
Follow the instructions in the reverse order.
Cable route
5.
6.
≤ 30 mm
5.5.3
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
Open the electronics box. (→ Page 12)
Observe the routing of the power supply cable (1) in the
electronics box in order to guarantee that there is no
strain.
1
L N
RT
2
1
230-V cable route
5.5.4
2
X1
230V~
24-V cable or eBUS
cable route
Carrying out the wiring
30 mm max.
1.
Shorten the connection cables to the appropriate
lengths to prevent them from causing damage inside
the electronics box.
2.
3.
Screw the plug to the connection cable.
Plug the plug into the slot provided on the PCB.
5.5.5
Establishing the power supply
7.
8.
9.
Carry out the wiring. (→ Page 13)
Close the electronics box.
Make sure that access to the mains connection is always available and is not covered or blocked.
5.5.6
Connecting controls to the electronics
1
Burner
off
RT
24V =
RT
BUS
- +
BUS
X106
B.off
24 V BUS
1
Burner
off
24V=
RT
2
3
–
+
BUS
X2
X22
X41
4
1.
2.
3.
Observe all valid regulations.
Ensure that the rated mains voltage is 230 V.
Set up a fixed connection and install a partition with a
contact opening of at least 3 mm (e.g. fuses or power
switches).
1
2
1.
2.
0020277252_00 ecoFIT sustain Installation and maintenance instructions
Safety thermostat for
underfloor heating
24 V control
3
4
eBUS control or radio
receiver unit
Outdoor temperature
sensor, wired
Open the electronics box. (→ Page 12)
Carry out the wiring. (→ Page 13)
13
6 Operation
3.
6.3
Connect the individual components depending on the
installation type.
1.
Conditions: If installing a multi-circuit controller.
▶
2.
Change the pump's operating mode d.18 from Eco (intermittently operating pump) to Comfort (continuously
operating pump).
3.
Conditions: When connecting a control (230 V).
≤ 30 mm
4.
5.
L N
▶
▶
4.
RT
6.
7.
8.
X1
230V~
Calling up the installer level
Only call up the installer level if you are a competent
person.
Press
and
("i") at the same time.
◁ S.xx appears in the display (current unit status).
Press
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.
6.4
Live Monitor (status codes)
Menu → Live monitor
Connect the control to the main plug.
Remove the bridge from the plug 24V=RT.
Close the electronics box.
Status codes in the display provide information on the product's current operating status.
Status codes – Overview (→ Page 31)
6
6.1
Operation
6.5
Call up the installer level + 1 x
Operating concept
The operating concept and the display and setting facilities
of the operator level are described in the operating instructions.
Display
Meaning
P.00
Purging check programme:
The internal pump is cyclically actuated.
The heating circuit and the hot water circuit are
purged via the automatic air vent (the cap of the
automatic air vent must be released).
An overview of the display and setting options in the installer
level can be found in the section "Overview of the installer
level". (→ Page 14)
6.2
Using check programmes
1x
: Start heating circuit purging
2x
( →
purging
Installer level overview
3x
S.31
D.--P.--
P.01
Maximum load check programme:
After successful ignition, the product is operated at
maximum heat input.
P.02
Minimum load check programme:
After successful ignition, the product is operated at
minimum heat input.
P.06
Filling mode check programme:
The prioritising diverter valve is moved to the midposition. The burner and pump are switched off (to
fill or drain the product).
D F
--/--
→ ): Restart heating circuit purging
1x
(Cancel): End 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 sec. on,
20 sec. off. Display: Active heating circuit.
Purging the 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.
Code
PF
(
): Start domestic hot water circuit
DP
14
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Start-up 7
7
7.1
Start-up
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 firstcommissioning-checklist. The first-commissioning-checklist
in the appendix (→ Page 40) of the installation instructions
must be filled out and stored carefully along with the unit's
documentation.
▶
▶
7.2
Carry out the initial start-up using the first-commissioning-checklist in the appendix.
Fill out and sign the first-commissioning-checklist.
Checking the type of gas
Make sure that the product is set up correctly by checking
the type of gas. This ensures optimum combustion quality.
▶
7.3
Check the type of gas as part of routine product maintenance work when replacing components or carrying out
work on the gas route.
Checking the factory setting
▶
▶
Checking the filling and supplementary water
▶
▶
You must treat the heating water in the following cases:
–
–
–
Check the information about the type of gas indicated on
the identification plate and compare this with the type of
gas available at the installation location.
Conditions: The product design is not compatible with the local gas
group
Do not start up the product.
Conditions: The product design is compatible with the local gas group
▶
7.4
Proceed as described below.
Checking and treating the heating
water/filling and supplementary water
Caution.
Risk of material damage due to poor-quality 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:
The product is only authorised to be operated with natural
gas.
▶
Before filling the installation, measure the hardness of the
filling and supplementary water.
Treating the filling and supplementary water
The product's combustion has been factory tested and is
preset for operation with the gas group indicated on the identification plate.
▶
If the value is below 6.5 or above 8.5, clean the system
and treat the heating water.
Ensure that oxygen cannot get into the heating water.
Ensure that the heating water is of sufficient quality.
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 6.5 or
more than 8.5.
1)
Total
heating
output
Water hardness at specific system volume
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.
The use of unsuitable heating water may
cause aluminium corrosion and a resulting lack of leak-tightness.
In contrast to steel, grey cast iron or copper,
for example, aluminium reacts with alkaline
heating water (pH value > 8.5) to produce
substantial corrosion.
▶
Before filling or topping up the installation, check the
quality of the heating water.
> 20 l/kW
≤ 50 l/kW
≤ 20 l/kW
When using aluminium, make sure that
the pH value of the heating water is
between 6.5 and a maximum of 8.5.
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 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.
0020277252_00 ecoFIT sustain Installation and maintenance instructions
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.
15
7 Start-up
▶
Do not use any unsuitable frost and corrosion protection agents, biocides or sealants.
7.6
▶
No incompatibility with our products has been detected to
date with proper use of the following additives.
7.7
▶
▶
Switching on the product
Switch on the product via the main switch installed onsite.
Filling and purging the heating installation
Preliminary work
When using additives, follow the manufacturer's instructions without exception.
Flush the heating installation through.
1
We accept no liability for the compatibility of any additive or
its effectiveness in the rest of the heating system.
Additives for cleaning measures (subsequent
flushing required)
–
–
–
–
–
1
Adey MC3+
Adey MC5
Fernox F3
Sentinel X 300
Sentinel X 400
Additives intended to remain permanently in the
installation
–
–
–
–
–
Adey MC1+
Fernox F1
Fernox F2
Sentinel X 100
Sentinel X 200
1.
2.
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
Avoiding danger arising from insufficient
water pressure
3.
4.
Check the silicone hose connection (1) between the
pump's automatic air vent and the hydraulic console.
Fill with water until the required filling pressure is
reached.
– Recommended filling pressure: 1 … 1.5 bar
◁ The heating and hot water functions cannot be activated.
◁ The pressure value flashes in the display until a
pressure of 0.05 MPa (0.5 bar) or higher has been
reached.
◁ An automatic air vent function is activated if the
pressure exceeds 0.05 MPa (0.5 bar) for longer than
15 seconds.
Purge each radiator until the water escapes normally,
and then retighten the system's purging valves.
Check that all connections are leak-tight.
Conditions: If the noise persists in the boiler
The filling pressure must be between 0.10 and 0.15 MPa
(1.0 and 1.5 bar).
▶
If the heating installation extends over several storeys,
higher filling pressures may be required to avoid air entering
the heating installation.
Purge the product again by activating check programme
P.00.
If the water pressure falls below 0.05 MPa (0.5 bar), the
value flashes in the display.
If the water pressure falls below 0.03 MPa (0.3 bar), the
product switches off. The display shows 0.0 MPa (0.0 bar).
Fault F.22 is stored in the fault list.
▶
16
Top up the water in the heating installation to start up the
product again.
◁ The pressure value flashes in the display until a
pressure of 0.05 MPa (0.5 bar) or higher has been
reached.
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Start-up 7
7.8
Filling the condensate trap
Nom.
+5%
−10%
15.3
1.62
1.70
1.46
18.4
1.95
2.05
1.76
24.7
2.61
2.74
2.35
25.7
2.72
2.86
2.45
28.6
3.03
3.18
2.73
30.6
3.24
3.40
2.92
35.7
3.78
3.97
3.40
2
C
A
B
H gas in m³/h
Qnw from the data
plate
Conditions: Gas flow rate not in the permissible range
3
1
▶
▶
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 rate in the permissible range
1.
Unclip the lower section of the condensate trap (1) from
the upper section of the condensate trap (2).
Remove the float (3).
Fill the lower section of the condensate trap with water
up to 10 mm below the upper edge of the condensate
discharge pipe.
Re-insert the float (3).
2.
3.
4.
Note
Check that the float is present in the condensate trap.
5.
Clip the lower section of the condensate trap (1) into the
upper section of the condensate trap (2).
7.9
Open the water tap to fill the hot water circuit.
Close the water tap once the appropriate volume of
water has flowed out.
◁ The hot water circuit is filled.
Check all connections and the entire system for leaktightness.
3.
7.10
▶
▶
▶
7.11
Checking and adjusting the gas settings
Only a qualified competent person is authorised to implement the settings on the gas valve assembly.
Each destroyed tamper-proof seal must be replaced.
The CO₂ adjusting screw must be sealed.
Never modify the factory setting of the gas pressure regulator of the gas valve assembly.
7.11.1 Checking the gas connection pressure (gas
flow pressure)
2
1
1.
Checking the gas flow rate
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:
▶
▶
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.
Filling the hot water circuit
1.
2.
▶
▶
▶
▶
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.
2.
3.
4.
5.
6.
7.
8.
0020277252_00 ecoFIT sustain Installation and maintenance instructions
Ensure that the gas inlet working pressure can be
obtained with all other gas appliances in the property
working.
Close the gas stopcock (1).
Undo the sealing screw on the test nipple (2).
Connect a manometer to the test nipple (2).
Open the gas stopcock (1).
Start up the product with check programme P.01 (system with eBUS control) or P.03 (installation without
eBUS control).
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 (2)
complies with the requirements.
17
7 Start-up
Permissible connection pressure
Great Britain
9.
Natural
gas
G20
7.11.2 Checking the leak-tightness of the flue gas
installation and flue gas recirculation
1.7 … 2 kPa
(17.0
… 20 mbar)
1.
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.
Conditions: Gas flow pressure not in the permissible range
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.
▶
▶
▶
▶
▶
▶
▶
▶
▶
▶
▶
2.
3.
4.
5.
6.
7.
7.11.3 Thoroughly flushing the heating installation
("hot")
1.
2.
3.
If you cannot correct the failure, notify the gas supply
company and proceed as follows:
End 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 stopcock.
Remove the pressure gauge and retighten the sealing
screw (2) for the measuring nipple.
Open the gas stopcock (1).
Check the test nipple for gas tightness.
Close the gas stopcock (1).
Install the front casing. (→ Page 9)
Disconnect the product from the electrical installation.
You must not start up the boiler.
4.
5.
6.
7.
▶
▶
▶
▶
▶
▶
▶
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 stopcock (1).
Remove the pressure gauge and retighten the sealing
screw (2) for the measuring nipple.
Open the gas stopcock (1).
Check the test nipple for gas tightness.
Install the front casing. (→ Page 9)
Reset boiler controls for normal operation.
Record the appliance gas inlet working pressure (kPa
resp. mbar) in the Benchmark gas boiler commissioning
checklist.
8.
Install the front casing. (→ Page 9)
7.11.4 Checking the CO₂ content
1.
2.
18
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 and purge the heating installation. (→ Page 16)
Re-fill the system until the system design pressure of
0,1 MPa (1,0 bar) is attained.
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.
Conditions: Gas flow pressure in the permissible range
▶
▶
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.
Start up the product with check programme (P.01).
Wait until the value that is read is stable.
– Waiting period for reading a stable value: 5 min
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Adapting the unit to the heating installation 8
1
8.1
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 mode during a burner
anti-cycling time does not affect the time function element.
8.1.1
3.
4.
Unscrew the cover from the flue gas analysis point (1).
Measure the CO₂ content at the flue gas analysis point
(1).
Compare the measured value with the corresponding
value in the table.
5.
1.
2.
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]
Checking the CO₂ content
Great Britain
front casing on / front casing off
Natural gas
G20
9.2 ±1 %
◁
▽
7.12
▶
▶
The value is OK.
The value is not OK; you cannot start up the
product.
▶ Inform Customer Service.
Checking leak-tightness
Check the gas pipe, the heating circuit and the hot water
circuit for leak-tightness.
Check that the air/flue pipe has been installed correctly.
Check whether the vacuum chamber has been closed
tightly.
7.12.1 Checking the heating mode
1.
2.
3.
4.
5.
8
Activate the heating mode on the user interface.
Turn all thermostatic radiator valves on the radiators
until they are fully open.
Allow the product to operate for at least 15 minutes.
Fill and purge the heating installation. (→ Page 16)
Call up the status codes. (→ Page 14)
Status codes – Overview (→ Page 31)
◁ If the product is working correctly, the display shows
S.04.
Adapting the unit to the heating
installation
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
TFlow
(target)
[°C]
Conditions: Room-sealed operation
▶
Setting the burner anti-cycling time
8.1.2
▶
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
.
You can reset/change the system parameters.
Overview of diagnostics codes (→ Page 28)
0020277252_00 ecoFIT sustain Installation and maintenance instructions
19
8 Adapting the unit to the heating installation
8.2
Setting the pump output
B
The product is equipped with a speed-regulated high-efficiency pump, which adjusts independently to the hydraulic
conditions of the heating installation.
350
300
If you have installed a low loss header in the heating installation, you should switch off the speed regulation and set the
pump output to a fixed value.
▶
If required, change the setting of the pump speed, which
depends on the operating mode, under diagnostics code
d.14.
Overview of diagnostics codes (→ Page 28)
8.2.1
Pump diagrams
250
1
200
150
100
2
50
200
400
600
Remaining feed head
[mbar]
Flow rate [l/h]
B
100
2
50
0
0
200
400
600
Remaining feed head
[mbar]
Flow rate [l/h]
800
1000
1
Max. PWM
2
Min. PWM
1200
A
25s:
300
A
150
B
B
350
0
200
A
12s:
0
1
250
800
1
Max. PWM
2
Min. PWM
1000
A
B
450
400
350
300
250
200
150
100
50
0
0
A
15s:
2
200
400
Remaining feed head
[mbar]
Flow rate [l/h]
B
B
1
600
800
1000
1
Max. PWM
2
Min. PWM
1200
A
30s:
350
300
1
250
350
200
300
150
200
2
50
0
1
250
100
0
B
400
150
200
400
600
800
1000
1200 A
2
100
50
A
B
Remaining feed head
[mbar]
Flow rate [l/h]
1
Max. PWM
2
Min. PWM
0
A
18s:
20
B
0
500
Remaining feed head
[mbar]
Flow rate [l/h]
1000
1
Max. PWM
2
Min. PWM
1400
A
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Handing the product over to the end user 9
8.3
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 parameter
d.14.
Conditions: Water hardness: > 3.57 mol/m³
–
9
Handing the product over to the end
user
▶
When you have finished the installation, attach the sticker
supplied (in the end user's language) to the product
cover.
Explain to the end user how the safety devices work and
where they are located.
Inform the end user how to handle the product.
In particular, draw attention to the safety information
which the end user must follow.
Inform the end user that they must have the product
maintained in accordance with the specified intervals.
Instruct the end user about measures taken for routing
the combustion air supply and flue system.
▶
▶
▶
Conditions: d.14 is set to 0 = auto
▶
Do not change the factory settings.
▶
▶
▶
Conditions: d.14 is set to 1 - 5
Remove the front casing. (→ Page 9)
10
Troubleshooting
10.1
▶
1
▶
▶
8.4
Regulate the pressure using the adjusting screw (1).
Position of the adjusting
screw
Notes/application
Right-hand stop (screwed
all the way in)
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 (six anticlockwise rotations)
Default setting
Five further anti-clockwise
rotations starting from the
mid-position
If noises are produced in the
radiators or radiator valves.
Install the front casing. (→ Page 9)
Setting the hot water temperature
Danger!
Risk of death from legionella.
Legionella multiply at temperatures below
60 °C.
▶
▶
Hot water temperature: ≤ 50 ℃
Eliminating faults
If fault messages (F.xx) appear, eliminate the fault after
referring to the table in the appendix or using the check
programmes. (→ Page 14)
Overview of fault codes (→ Page 32)
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.
10.2
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.
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.
0020277252_00 ecoFIT sustain Installation and maintenance instructions
21
10 Troubleshooting
10.3
Calling up and clearing the fault memory
The last 10 fault messages are stored in the fault memory.
▶
▶
▶
▶
▶
Call up the installer level. (→ Page 14)
Navigate to the fault codes.
◁ 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.
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
.
10.4
1.
2.
10.5
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.6
1
A
B
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
.
3.
Remove the gas pipe (1).
1
Preparing the repair work
Switch off the product.
Disconnect the product from the electrical installation.
Remove the front casing.
Close the gas stopcock.
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.
Ensure that water does not drip on live components
(e.g. the electronics box).
Use only new seals and O-rings. Do not use any additional sealing materials.
Replacing defective components
A
2
4
2
B
3
4.
5.
6.
7.
Remove the temperature sensor (3).
Remove the upper clip (1).
Remove the lower clip (4).
Remove the supply pipe (2).
10.6.1 Replacing the burner
1.
2.
3.
4.
5.
6.
Remove the gas-air mixture unit. (→ Page 25)
Remove the two burner seals.
Remove the burner.
Insert the new burner.
Insert two new burner seals in the burner cover.
Install the gas-air mixture unit. (→ Page 27)
10.6.2 Replacing the gas-air mixture unit
1.
2.
Remove the gas-air mixture unit. (→ Page 25)
Install the new gas-air mixture (→ Page 27).
1
A
2
3
2
B
10.6.3 Replacing the heat exchanger
1.
2.
22
Remove the front casing. (→ Page 9)
Remove the gas-air mixture unit. (→ Page 25)
8. Remove the upper clip (1).
9. Remove the lower clip (3).
10. Remove the return pipe (2).
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Troubleshooting 10
10.6.5 Replacing the expansion vessel
1.
Drain the product. (→ Page 27)
B
1
1
C
A
2
2
D
A
3
11. Remove the clip underneath the condensate tray (1).
12. Undo the four screws (2).
2
1
C
A
2.
3.
4.
5.
6.
7.
8.
9.
B
Undo the nut (3).
Remove both screws on the support plate (1).
Remove the support plate.
Pull out the expansion vessel (2) towards the front.
Insert the new expansion vessel into the product.
Screw the new expansion vessel to the water connection. To do this, use a new seal.
Attach the support plate using both screws.
Fill and purge the product (→ Page 16) and, if required,
the heating installation.
10.6.6 Replacing the main PCB
C
13. Remove the ignition electrode (1).
14. Lift the heat exchanger up slightly and remove it together with the condensate tray.
15. Remove the ignition transformer (2).
16. Install the new heat exchanger in reverse order.
C
D
B
10.6.4 Replacing the pump head
A
A
1
2
1.
2.
3.
4.
5.
6.
Disconnect the pump cable from the electronics box.
Undo the four bolts (1).
Remove the pump head (2).
Replace the O-ring.
Use four screws to secure the new pump head.
Connect the pump cable to the electronics box.
1.
2.
3.
4.
5.
6.
7.
0020277252_00 ecoFIT sustain Installation and maintenance instructions
Open the electronics box. (→ Page 12)
Pull all of the plugs out from the PCB.
Undo the clips on the PCB.
Remove the PCB.
Install the new PCB in such a way that it clicks into the
groove at the bottom and into the clip at the top.
Plug in the PCB plugs.
Close the electronics box.
23
11 Inspection and maintenance
10.6.7 Replacing the PCB for the user interface
10.6.9 Replace the pressure sensor
1
D
C
C
B
2
A
1.
2.
3.
4.
5.
A
Pull out the plug.
Remove the clip (1).
Remove the pressure sensor (2).
Install the new pressure sensor.
Reattach the clip (1).
10.7
▶
1.
2.
3.
4.
5.
6.
7.
Open the electronics box. (→ Page 12)
Pull the plug out of the PCB.
Undo the clips on the PCB.
Remove the PCB.
Install the new PCB in such a way that it clicks into the
groove at the bottom and into the clip at the top.
Plug in the PCB plug.
Close the electronics box.
Check that the product is leak-tight. (→ Page 19)
11
Inspection and maintenance
11.1
11.2
▶
1
Checking the CO₂ content
Start up the product with check programme (P.01).
Wait until the value that is read is stable.
– Waiting period for reading a stable value: 5 min
1
Remove the clip (2).
Remove the expansion relief valve.
Fit the new expansion relief valve with a new O-ring.
Reattach the clip (2).
3.
4.
5.
24
Observing inspection and maintenance
intervals
Comply with the minimum clearances for the inspection
and maintenance. Depending on the results of the inspection, it may be necessary to bring maintenance work
forward.
– Inspection and maintenance work (→ Appendix)
11.3
1.
2.
1.
2.
3.
4.
Using original seals
If you replace components, use only the enclosed original
seals; additional sealing materials are not required.
10.6.8 Replacing the expansion relief valve
2
Checking the product for leak-tightness
Unscrew the cover from the flue gas analysis point (1).
Measure the CO₂ content at the flue gas analysis point
(1).
Compare the measured value with the corresponding
value in the table.
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Inspection and maintenance 11
Checking the CO₂ content
11.5
Removing the gas-air mixture unit
Great Britain
Natural gas
Note
The gas-air mixture unit consists of three main
components:
G20
– Fan
9.2 ±1 %
– Gas valve,
front casing on / front casing off
◁
▽
11.4
– Burner cover
The value is OK.
The value is not OK; you cannot start up the
product.
▶ Set the CO₂ content. (→ Page 25)
1.
2.
3.
Setting the CO₂ content
Switch off the product via the main switch.
Close the gas isolator cock.
Remove the front casing. (→ Page 9)
1
Conditions: The CO₂ content must be adjusted
A
B
1
A
C
B
2
D
▶
▶
▶
▶
Remove the sticker.
Turn the screw (1) to set the CO₂ content (value with
front casing removed).
◁ To increase the CO₂ content: Turn anti-clockwise
◁ To decrease the CO₂ content: Turn clockwise
Only carry out the adjustment in increments of 1/8 turn
and wait approximately 1 minute after each adjustment
until the value has stabilised.
Compare the measured value with the corresponding
value in the table.
4.
5.
6.
Remove the screw (1).
Push the clip upwards.
Remove the flue gas pipe (2).
Setting the CO₂ value
Great Britain
5
front casing on / front casing off
4
Natural gas
G20
CO₂ at full load
9.2 ±0.2 %
Set for Wobbe index
W₀
14.09 kW⋅h/m³
O₂ at full load
4.5 ±1.8 vol. %
CO at full load
≤ 250 ppm
CO/CO₂
≤ 0.0027
▽
▶
▶
If the setting is not in the specified adjustment range,
you must not start up the product.
▶ Inform Customer Service.
Check whether the air-quality requirements with regard
to carbon monoxide are fulfilled.
Fit the front panel.
3
B
7.
8.
0020277252_00 ecoFIT sustain Installation and maintenance instructions
A
Remove the air intake pipe (3).
Remove the plugs from the gas valve (4) and from the
fan (5).
25
11 Inspection and maintenance
11.7
1.
2.
6
11.8
B
D
Checking the burner
Search the surface of the burner for possible damage. If
you see any damage, replace the burner.
Install the two new burner seals.
Checking the ignition electrode
3
5
2
C
1
A
9.
4
Remove the gas-air mixture unit (6).
7
1.
7
2.
3.
8
4.
5.
6.
10. Remove the burner seals (7) and the burner (8).
11. Check the burner and the heat exchanger for damage
and dirt.
12. If necessary, clean or replace the components according to the following sections.
13. Install the two new burner seals.
11.6
11.9
Disconnect the connection (2) and the earthing cable
(1).
Remove the fixing screws (3).
Carefully remove the electrode from the combustion
chamber.
Check that the electrode ends (4) are undamaged.
Check the electrode distance.
– Clearance for the ignition electrodes: 3.5 … 4.5 mm
Make sure that the seal (5) is free from damage.
▽ If necessary, replace the seal.
Cleaning the condensate trap
2
Cleaning the heat exchanger
1
C
A
B
3
1
1.
2.
Protect the folded down electronics box against sprayed
water.
Clean the ribs of the heat exchanger (1) with water.
The water runs out into the condensate tray.
◁
1.
2.
3.
4.
5.
26
Unclip the lower section of the condensate trap (1) from
the upper section of the condensate trap (2).
Remove the float (3).
Flush out the float and lower section of the condensate
trap with water.
Fill the lower section of the condensate trap with water
up to 10 mm below the upper edge of the condensate
discharge pipe.
Re-insert the float (3).
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Decommissioning the product 12
Note
Check whether the float is present in the
condensate trap.
6.
Clip the lower section of the condensate trap (1) into the
upper section of the condensate trap (2).
13
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
11.10 Installing the gas-air mixture unit
1.
2.
3.
4.
5.
6.
Install the burner.
Install two new burner seals in the burner hood.
Install the gas-air mixture unit.
Tighten the screws on the gas-air mixture unit.
– Ideally to 7 Nm if a torque spanner is available.
Install the flue pipe.
Install the air intake pipe.
11.11 Draining the product
1.
2.
3.
Close the service valves of the product.
Start check programme P.05.
Overview of the check programmes (→ Page 14)
Open the drain valves.
11.12 Checking the admission pressure of the
expansion vessel
1.
2.
Drain the product. (→ Page 27)
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.
Top up the expansion vessel in accordance with the
static height of the heating installation, ideally with nitrogen, otherwise 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 23).
Fill and purge the heating installation. (→ Page 16)
11.13 Completing inspection and maintenance
work
1.
2.
Check the gas connection pressure (gas flow pressure).
(→ Page 17)
Check the CO₂ content. (→ Page 18)
11.14 Checking the product for leak-tightness
▶
12
▶
▶
▶
▶
▶
Check that the product is leak-tight. (→ Page 19)
Decommissioning the product
Switch off the product.
Disconnect the product from the electrical installation.
Close the gas stopcock.
Close the cold-water isolation valve.
Drain the product. (→ Page 27)
0020277252_00 ecoFIT sustain Installation and maintenance instructions
27
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.
Diagnostics
code
Parameter
d.00
Values
Unit
Increment, select, explanation
–
kW
The maximum heating output
varies depending on the product.
→ Section "Technical data"
Automatic: Unit automatically
adjusts the maximum output to
the current system demand
1
60
min
2
60
Min.
Max.
Heating maximum output
–
d.01
Pump overrun in heating
mode
d.02
Maximum burner anticycling time in heating
mode
d.04
Water temperature in the
cylinder
d.05
Determined heating flow
set target temperature
d.06
Hot water set target temperature
d.07
Default setting
Own setting
→ Section
"Technical
data"
Adjustable
1
5
Adjustable
min
1
20
Adjustable
℃
–
–
Not
adjustable
℃
–
–
Not
adjustable
Current value
℃
(Combination unit only)
–
Not
adjustable
Set target temperature
for the domestic hot water cylinder
Current value
℃
–
–
Not
adjustable
d.08
Status of the 230 V thermostat
Current value
–
0 = Room thermostat open (no
heat requirement)
1 = Room thermostat closed
(heat requirement)
–
Not
adjustable
d.09
Heating flow set target
temperature that is set
on the eBUS room thermostat
Current value
℃
–
–
Not
adjustable
d.10
Status of the internal
pump in the heating circuit
Current value
–
off / on
–
Not
adjustable
d.11
Status of the heating
circuit's shunt pump
Current value
–
off / on
–
Not
adjustable
d.13
Status of the hot water
circuit's circulation pump
Current value
–
off / on
–
Not
adjustable
d.14
Operating mode of the
modulating pump
–
0 = variable rotational speed
(auto)
1; 2; 3; 4; 5 = Fixed rotational
speeds → Section "Setting the
pump output"
0
Adjustable
d.15
Pump speed
Current value
%
–
–
Not
adjustable
d.16
Status of the 24 V room
thermostat
Current value
–
off = Heating off
on = Heating on
–
Not
adjustable
d.17
Heating control
–
off = Flow temperature
on = Return temperature (adjustment for underfloor heating.
If you have activated the return
temperature control, the automatic heating output determination function is not active.)
0
Adjustable
28
Current value
Current value
0
–
5
–
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Appendix
Diagnostics
code
Values
Parameter
Min.
Max.
Unit
Increment, select, explanation
Default setting
Own setting
d.18
Pump overrun operating
mode
1
3
–
1 = Continuous (pump runs permanently)
3 = Eco (intermittent pump mode
– for the dissipation of the residual heat after hot water generation at an extremely low heat
demand)
1
Adjustable
d.19
Pump operating mode, 2
stage pump
0
3
–
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 = Stage 2
3
Adjustable
d.20
Maximum hot water set
target temperature
50
60
℃
1
60
Adjustable
d.21
Status of the warm start
for hot water
Current value
–
off = Function deactivated
on = Function activated and
available
–
Not
adjustable
d.22
Status of the hot water
request
Current value
–
off = No current requirement
on = Current requirement
–
Not
adjustable
d.23
Status of the heating
demand
Current value
–
off = Heating off (Summer mode)
on = Heating on
–
Not
adjustable
d.24
Status of the pressure
monitor
0
–
off = Not switched
on = Switched
–
Not
adjustable
d.25
Status of the requirement
to reheat the cylinder or
for the hot water warm
start from the eBUS thermostat
Current value
–
off = Function deactivated
on = Function activated
–
Not
adjustable
d.27
Function of relay 1
(multi-functional module)
1
10
–
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extractor hood
5 = External solenoid valve
6 = Fault display
7 = Solar pump (omitted)
8 = eBUS remote control
9 = Legionella protection pump
10 = Solar valve
1
Adjustable
d.28
Function of relay 2
(multi-functional module)
1
10
–
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extractor hood
5 = External solenoid valve
6 = Fault display
7 = Solar pump (omitted)
8 = eBUS remote control
9 = Legionella protection pump
10 = Solar valve
2
Adjustable
d.31
Automatic filling device
0
2
–
0 = Manual
1 = Semi-automatic
2 = Automatic
0
Adjustable
d.33
Fan speed target value
Current value
rpm
Fan speed = Display value x 100
–
Not
adjustable
d.34
Value for the fan speed
Current value
rpm
Fan speed = Display value x 100
–
Not
adjustable
1
0020277252_00 ecoFIT sustain Installation and maintenance instructions
29
Appendix
Diagnostics
code
Parameter
Values
Min.
Max.
Default setting
Unit
Increment, select, explanation
Own setting
0 = Heating
40 = Mid-position (parallel operation)
100 = Domestic hot water
–
Not
adjustable
d.35
Position of the diverter
valve
Current value
–
d.36
Value for the hot water
flow
Current value
l/min
–
–
Not
adjustable
d.39
Water temperature in the
solar circuit
Current value
℃
–
–
Not
adjustable
d.40
Heating flow temperature
Current value
℃
–
–
Not
adjustable
d.41
Heating return temperature
Current value
℃
–
–
Not
adjustable
d.43
Heating curve
0.2
4
0.1
1.2
Adjustable
d.45
Value for the base point
of the heating curve
15
30
–
1
20
Adjustable
d.47
Outside temperature
℃
–
–
Not
adjustable
d.50
Correction of the minimum fan speed
0
3000
rpm
1
Fan speed = Display value x 10
600
Adjustable
d.51
Correction of the maximum fan speed
-2500
0
rpm
1
Fan speed = Display value x 10
-1000
Adjustable
d.58
Solar circuit reheating
0
3
–
0 = Boiler's Legionella protection
function deactivated
3 = Hot water activated (min.
target value 60 °C)
0
Adjustable
d.60
Number of blocks by the
temperature limiter
Current value
–
–
–
Not
adjustable
d.61
Number of unsuccessful
ignitions
Current value
–
–
–
Not
adjustable
d.62
Night set-back
–
1
0
Adjustable
d.64
Average burner ignition
time
Current value
s
–
–
Not
adjustable
d.65
Maximum burner ignition
time
Current value
s
–
–
Not
adjustable
d.66
Activation of the warm
start function for hot water
–
off = Function deactivated
on = Function activated
1
Adjustable
d.67
Remaining burner anticycling time (setting under d.02)
Current value
min
–
–
Not
adjustable
d.68
Number of unsuccessful
ignitions at 1st attempt
Current value
–
–
–
Not
adjustable
d.69
Number of unsuccessful
ignitions at 2nd attempt
Current value
–
–
–
Not
adjustable
d.70
Operation of the diverter
valve
0
2
–
0 = Normal operating mode
(DHW and heating mode)
1 = Mid-position (parallel operation)
2 = Permanent heating mode
position
0
Adjustable
d.71
Maximum heating flow
set target temperature
45
80
℃
1
→ Section
"Technical
data"
Adjustable
d.73
Correction of the hot water warm start temperature
-15
5
K
1
0
Adjustable
d.75
Maximum cylinder reheating time
20
90
min
1
45
Adjustable
d.77
Max. cylinder reheating
–
–
kW
1
→ Section "Technical data"
–
Adjustable
30
Current value
0
30
–
–
–
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Appendix
Diagnostics
code
Parameter
Values
Min.
Max.
Unit
Increment, select, explanation
Default setting
Own setting
d.80
Running time in heating
mode
Current value
h
Running time = Display value x
100
–
Not
adjustable
d.81
Running time in hot water handling mode
Current value
h
Running time = Display value x
100
–
Not
adjustable
d.82
Number of burner ignitions in heating mode
Current value
–
Number of ignitions = Display
value x 100
–
Not
adjustable
d.83
Number of burner ignitions in hot water handling mode
Current value
–
Number of ignitions = Display
value x 100
–
Not
adjustable
d.84
Maintenance in
0
3000
h
Number of hours = Display value
x 10
300
Not
adjustable
d.85
Increase in the min. output (heating and hot water handling mode)
–
–
kW
1
–
Adjustable
d.88
Flow rate limit value
for ignition in hot water
handling mode
0
1
–
0 = 1.7 l/min (no delay)
1 = 3.7 l/min (2 s delay)
0
Adjustable
d.90
Status of the eBUS room
thermostat
Current value
–
off = Not connected
on = Connected
–
Not
adjustable
d.91
Status DCF77
Current value
–
–
–
Not
adjustable
d.93
Setting the product code
0
99
–
1
The Device Specific Number
(DSN) can be found on the identification plate.
–
Adjustable
d.94
Delete fault list
0
1
–
off = No
on = Yes
–
Adjustable
d.95
Software versions
–
–
–
1 = Main PCB
2 = Interface PCB
–
Adjustable
d.96
Default setting (reset)
–
–
–
0 = No
1 = Yes
–
Adjustable
Status codes – Overview
B
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Status code
Meaning
Displays in heating mode
S.0
Heating mode: No requirement
S.01
Heating mode: Advance fan operation
S.02
Heating mode: Pump pre-run
S.03
Heating mode: Burner ignition
S.04
Heating mode: Burner on
S.05
Heating mode: Pump/fan overrun
S.06
Heating mode: Fan overrun
S.07
Heating mode: Pump overrun
S.08
Heating mode: Temporary shutdown after heating procedure
S.10
Hot water handling mode: Requirement
S.11
Hot water handling mode: Advance fan operation
S.13
Hot water handling mode: Burner ignition
S.14
DHW mode: Burner on
S.15
DHW mode: Pump/fan overrun
Displays in hot water handling mode
0020277252_00 ecoFIT sustain Installation and maintenance instructions
31
Appendix
Status code
Meaning
S.16
DHW mode: Fan overrun
S.17
DHW mode: Pump overrun
Display in Comfort mode with warm start or hot water handling mode with cylinder
S.20
Hot water handling mode: Requirement
S.21
Hot water handling mode: Advance fan operation
S.22
Hot water handling mode: Pump pre-run
S.23
Hot water handling mode: Burner ignition
S.24
DHW mode: Burner on
S.25
DHW mode: Pump/fan overrun
S.26
DHW mode: Fan overrun
S.27
DHW mode: Pump overrun
S.28
Hot water handling mode: Temporary shutdown of the burner
S.30
Room thermostat is blocking heating mode.
S.31
No heating demand: Summer mode, eBUS controller, waiting period
S.32
Fan waiting time: Fan speed outside of the tolerance values
S.33
Forced fan operation until the pressure monitor is switched
S.34
Frost protection active
S.39
Underfloor heating contact open
S.41
Water pressure too high
S.42
Flue non-return flap closed
S.46
Frost protection mode (Comfort): Minimum load
S.53
Product in waiting period/operation block function due to low water pressure (flow/return spread too large)
S.54
Waiting period: Low water pressure in the circuit (flow/return spread too large)
S.76
Maintenance message: Check the water pressure
S.88
Product purging active
S.91
Maintenance: Demo mode
S.96
Automatic test programme: Return temperature sensor, heating demands blocked.
S.97
Automatic test programme: Water pressure sensor, heating demands blocked.
S.98
Automatic test programme: Return temperature sensor, heating demands blocked.
S.99
Internal automatic test programmes
S.108
Purging the combustion chamber, fan in operation
S.109
Product's standby mode activated
Other displays
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.
Fault code
Meaning
Possible cause
F.00
Fault: Flow temperature sensor
NTC plug not plugged in or has come loose, multiple plug on the PCB not
plugged in correctly, interruption in cable harness, NTC sensor defective
F.01
Fault: Return temperature sensor
NTC plug not plugged in or has come loose, multiple plug on the PCB not
plugged in correctly, interruption in cable harness, NTC sensor defective
F.10
Short circuit: Flow temperature sensor
NTC sensor defective, short circuit in the cable harness, cable/casing
F.11
Short circuit: Return temperature sensor
NTC sensor defective, short circuit in the cable harness, cable/casing
F.12 and
F.91
Short circuit: Cylinder temperature
sensor
NTC sensor defective, short circuit in the cable harness, cable/casing
F.13
Short circuit: Domestic hot water cylinder
temperature sensor
NTC sensor defective, short circuit in the cable harness, cable/casing
32
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Appendix
Fault code
Meaning
Possible cause
F.20
Safety switch-off: Overheating temperature reached
Incorrect earth connection between cable harness and product, flow or return
NTC defective (loose connection), stray spark via ignition cable, ignition plug
or ignition electrode
F.22
Safety switch-off: Low water pressure in
the boiler
No or insufficient water in the product, water pressure sensor defective, cable to the pump or to the water pressure sensor loose/not
connected/defective
F.23
Safety switch-off: Temperature difference
too great (NTC1/NTC2)
Pump blocked, insufficient pump output, air in product, flow and return NTC
sensors connected the wrong way round
F.24
Safety switch-off: Temperature rise too
fast
Pump blocked, insufficient pump output, air in product, system pressure too
low, non-return valve blocked/incorrectly installed
F.25
Safety switch-off: Flue gas temperature
too high
Break in plug connection for optional flue gas safety cut-out (STB), break in
cable harness
F.27
Safety switch-off: Fault in flame detection
Moisture on the electronics, electronics (flame monitor) defective, gas solenoid valve leaking
F.28
Fault: Ignition unsuccessful when starting
up
Gas meter defective or gas pressure monitor has triggered, air in gas, gas
flow pressure too low, thermal isolator device (TAE) has triggered, incorrect
gas restrictor, incorrect spare gas valve, fault on the gas valve, multiple plug
on PCB incorrectly plugged in, break in cable harness, ignition system (ignition transformer, ignition cable, ignition plug, ignition electrode) defective,
ionisation current interrupted (cable, electrode), incorrect earthing of product,
electronics defective
F.29
Fault: Flame loss
Gas supply temporarily stopped, flue gas recirculation, incorrect earthing of
product, ignition transformer has spark failure
F.32
Fan frost protection function active: Fan
speed outside the tolerance values
Plug on fan not correctly plugged in, multiple plug on PCB not correctly
plugged in, break in cable harness, fan blocked, Hall sensor defective, electronics defective
F.49
eBUS fault: Voltage too low
Short circuit on eBUS, eBUS overload or two power supplies with different
polarities on the eBUS
F.61
Fault: Gas valve control system
Short circuit/short to earth in cable harness for the gas valve, gas valve
defective (coils shorted to earth), electronics defective
F.62
Fault: Gas valve switch-off control
Delayed switch-off of gas valve, delayed extinguishing of flame signal, gas
valve leaking, electronics defective
F.63
Fault: EEPROM
Electronics defective
F.64
Fault: Electronics/sensor/analogue-todigital converter
Flow or return NTC short circuited, electronics defective
F.65
Fault: Electronics temperature too high
Electronics overheating due to external influences, electronics defective
F.67
Value sent back by ASIC is incorrect
(flame signal)
Implausible flame signal, electronics defective
F.68
Fault: Unstable flame (analogue input)
Air in gas, gas flow pressure too low, incorrect air ratio, incorrect gas restrictor, ionisation flow interruption (cable, electrode)
F.70
Invalid product code (DSN)
Display and PCB replaced at same time and Device Specific Number not
reset, wrong or missing output range coding resistance
F.71
Fault: Flow/return temperature sensor
Flow temperature sensor signalling constant value: Flow temperature sensor
incorrectly positioned on supply pipe, flow temperature sensor defective
F.72
Fault: Deviation in the water pressure
sensor/return temperature sensor
Flow/return NTC temperature difference too great → flow and/or return temperature sensor defective
F.73
Fault: Water pressure sensor not connected or has short-circuited
Interruption/short circuit of water pressure sensor, interruption/short circuit
to GND in supply line to water pressure sensor or water pressure sensor
defective
F.74
Fault: Electrical problem in the water
pressure sensor
Line to water pressure sensor has a short circuit to 5 V/24 V or internal fault
in the water pressure sensor
F.75
Fault: Pressure sensor
Pressure switch defective
F.76
The safety cut-out in the primary heat
exchanger is defective
Safety cut-out feedback does not match the gas valve feedback
F.77
Fault: Condensate or smoke
No response, flue non-return flap defective
F.78
Interruption to DHW outlet sensor at
external controller
UK link box is connected, but hot water NTC not bridged
F.83
Fault: Dry fire
When the burner starts, the temperature change registered at the flow or
return temperature sensor is non-existent or too small: Insufficient water
in the product, the flow or return temperature sensor is not in the correct
position on the pipe
0020277252_00 ecoFIT sustain Installation and maintenance instructions
33
Appendix
Fault code
Meaning
Possible cause
F.84
Fault: Flow/return temperature sensor
Values not consistent, difference < -6 K
Flow and return temperature sensors signalling implausible values: Flow and
return temperature sensors have been inverted, flow and return temperature
sensors have not been correctly installed
F.85
Fault: Temperature sensor
The flow and/or return temperature sensors have been installed on the same
pipe/incorrect pipe
Temperature sensor not connected or is connected incorrectly
F.86
Fault: Underfloor heating contact
Underfloor heating contact open, sensor disconnected or defective
F.87
Fault: Electrodes
Electrodes not connected or they are connected incorrectly, short circuit in
the cable harness
F.88
Fault: Gas valve
Gas valve not connected or it is connected incorrectly, short circuit in the
cable harness
F.89
Fault: Pump
Pump not connected or it is connected incorrectly, incorrect pump connected, short circuit in the cable harness
Connection
No communication between the PCB
and the user interface
Electronics defective
34
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Appendix
D
Wiring diagram: Pure boiler
Burner off
RT 24V
X106
X51
2
3
eBUS
6
5
X20
1
2
10
11
4
15
3
16
1
1
2
4
5
1
9
X51
4
1
2
13
X51
5
M
3
1
X32
X35
Burner
off
24V=
RT
X2
X90
–
8
17
7
18
+
BUS
X2
X22
X20
24V
X51
X41
X40
X106
6
7
14
11
13
1
4
3
4
2
16
20
10
19
8
X30
X21
X21
1
4
3
2
10
24V
230V~
X14
X1
FUS
L
N
3
2
1
X12
RT
230Vac
230V~
X14
L
N
RT 230Vac
X1
L
N
L
N
L
11
9
1
Main PCB
7
Pressure sensor
2
Interface PCB
8
External ignition transformer
3
Temperature sensor on the heating flow
9
Heating pump
4
Temperature sensor on the heating return
10
Ionisation and ignition electrode
5
Fan
11
Main power supply and connection for 230 V control
6
Gas valve assembly
0020277252_00 ecoFIT sustain Installation and maintenance instructions
35
Appendix
E
Wiring diagram: Pure boiler (30 kW)
Burner off
X106
3
2
4
eBUS
X51
6
5
X20
1
2
10
11
4
15
3
16
1
1
2
4
5
1
9
X51
5
1
2
13
X51
6
M
3
1
X32
X35
Burner
off
24V=
RT
X2
X90
–
8
17
7
18
+
BUS
X2
X22
X20
24V
X51
X41
X40
X106
7
8
14
11
13
1
4
3
4
2
16
20
10
19
3
2
1
24V
X30
X21
X14
L
N
X12
L
N
X21
X12
RT
230Vac
230V~
X1
FUS
L
N
X14
230V~
10
9
L
N
RT 230Vac
X1
L
N
L
N
L
12
11
1
Main PCB
7
Gas valve assembly
2
Interface PCB
8
Pressure sensor
3
Control system
9
Ionisation electrode
4
Temperature sensor on the heating flow
10
Heating pump
5
Temperature sensor on the heating return
11
Ignition electrode
6
Fan
12
Main power supply and connection for 230 V control
36
Installation and maintenance instructions ecoFIT sustain 0020277252_00
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.
Note
Note: For products that are not part of the annual service agreement, maintenance must be carried out at least
once every five years.
#
Maintenance work
Interval
1
Ask the end user whether any significant problems occur when operating
the product
Annually
2
Use the diagnostics system to check the product's fault history
Annually
3
Visually inspect whether the air/flue pipe and its opening have been installed correctly in accordance with the set-up instructions
Annually
4
Check that the unit has been installed correctly and the connections have
been secured
Annually
5
Check all of the connections for tightness
Annually
6
Check that the condensate pipe is in good condition, that it is leak-tight
and that the drain is correct
Annually
7
Check whether all of the externally routed condensate pipes are dimensioned correctly and have been insulated sufficiently (frost protection)
Annually
8
Check whether the gas flow rate corresponds with the specifications on
the data plate and lies within the tolerances specified in these instructions
Annually
9
If the gas flow rate lies outside of the tolerances specified in these instructions, eliminate the fault in accordance with the regulations and the
current technology
Annually
10
Check the general condition of the product and, if required, eliminate any
faults that are found
Annually
11
Carry out the combustion analysis: Measure the CO content, CO₂ content
and the CO/CO₂ ratio. For products with a rear air/flue connection: The
combustion analysis can only be carried out when the unit casing has
been removed; it is not necessary to test these products for flue gas recirculation
Annually
12
Check the product's recirculation at the supply air test point on the air/flue
pipe. If required, inspect the entire air/flue system and, if necessary, correct the fault
Annually
13
Disconnect the product from the electrical installation
Annually
14
Check and, if required, correct the electrical installation
Annually
15
Remove the unit casing, check the condition of all of the functional components, in particular for leaks, corrosion, rust, etc. and, if required, repair
any damage
Annually
16
Visual inspection of the heat exchanger and burner seals
Annually
17
Carefully clean the inside of the product: The air passages to the burner
must be clear and clean
Annually
18
Close the installation's gas stopcock and, if required, service valves
Annually
19
Check the quality of the heating water: Clarity (clouding), correct inhibitor
and pH value
Annually
20
Checking the admission pressure of the expansion vessel
If required, at least every
5 years
27
21
Removing the gas-air mixture unit
If required, at least every
5 years
25
22
Checking the burner
If required, at least every
5 years
26
23
Cleaning the condensate trap
Annually
26
24
Filling the condensate trap
Annually
17
25
Cleaning the heat exchanger
If required, at least every
5 years
26
0020277252_00 ecoFIT sustain Installation and maintenance instructions
37
Appendix
#
Maintenance work
Interval
26
Check and, if required, replace the insulating mat in the burner area
If required, at least every
5 years
27
Installing the gas-air mixture unit
If required, at least every
5 years
28
Reassemble the product
After each time maintenance
work is carried out
29
Open the service valves, carry out the required leak-tightness test
Annually
30
Fill the product/heating installation to the filling pressure specified for the
system
Annually
31
Connect the product to the electrical installation
Annually
32
Run the test operation on the product/heating installation including hot
water generation (if available) and, if required, purge the product/heating
installation
Annually
33
Record all of the analysis results in the Benchmark service record in
these instructions
Annually
G
27
Position of the opening in the air/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
G.1
Positioning of the opening of a fan-supported flue gas pipe
Installation site
Minimum dimensions
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
1,200 mm
L
From an opening in the car port (e.g. door, window) which leads into the dwelling
1,200 mm
A
38
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Appendix
Installation site
Minimum dimensions
M
Vertical from a terminal on the same wall
1,500 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
300 mm
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
2,000 mm
G.2
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.
0020277252_00 ecoFIT sustain Installation and maintenance instructions
39
Appendix
H
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)
40
Installation and maintenance instructions ecoFIT sustain 0020277252_00
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
OR
mbar
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
0020277252_00 ecoFIT sustain Installation and maintenance instructions
41
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
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
42
AND
²%
²%
AND
AND
²%
²%
Installation and maintenance instructions ecoFIT sustain 0020277252_00
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.
NO
0020277252_00 ecoFIT sustain Installation and maintenance instructions
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.
43
Appendix
I
Technical data
Technical data – Heating
VU 156/6-3 (H-GB)
VU 186/6-3 (H-GB)
VU 306/6-3 (H-GB)
Max. flow temperature adjustment
range (default setting: 75 °C)
10 … 80 ℃
10 … 80 ℃
10 … 80 ℃
Maximum permissible pressure
0.3 MPa
(3.0 bar)
0.3 MPa
(3.0 bar)
0.3 MPa
(3.0 bar)
Nominal water flow (ΔT = 20 K)
655 l/h
788 l/h
1,102 l/h
Nominal water flow (ΔT = 30 K)
436 l/h
525 l/h
876 l/h
Approximate value for the
condensate volume (pH value
between 3.5 and 4.0) at 50/30 °C
1.53 l/h
1.84 l/h
3.06 l/h
ΔP heating at nominal flow (ΔT =
20 K)
0.025 MPa
(0.250 bar)
0.025 MPa
(0.250 bar)
0.025 MPa
(0.250 bar)
Technical data – G20 power/loading G20
VU 156/6-3 (H-GB)
VU 186/6-3 (H-GB)
VU 306/6-3 (H-GB)
Maximum heat output
15 kW
18 kW
30 kW
Effective output range (P)
at 40/30 °C
4.8 … 16.2 kW
5.3 … 19.5 kW
7.6 … 32.4 kW
Effective output range (P)
at 50/30 °C
4.7 … 15.9 kW
5.2 … 19.1 kW
7.5 … 31.8 kW
Effective output range (P)
at 80/60 °C
4.5 … 15.2 kW
5.0 … 18.3 kW
7.2 … 30.5 kW
Domestic hot water heat
output (P)
4.4 … 18.0 kW
4.9 … 25.2 kW
7.1 … 35.0 kW
Maximum heat input –
heating (Q max.)
15.3 kW
18.4 kW
30.6 kW
Minimum heat input – heating (Q min.)
4.5 kW
5.0 kW
7.2 kW
Maximum heat input – hot
water (Q max.)
18.4 kW
25.7 kW
35.7 kW
Minimum heat input – hot
water (Q min.)
4.5 kW
5.0 kW
7.2 kW
Technical data – General
VU 156/6-3 (H-GB)
VU 186/6-3 (H-GB)
VU 306/6-3 (H-GB)
Diameter of the gas pipe
1/2 inch
1/2 inch
1/2 inch
Diameter of the heating connections
3/4 inch
3/4 inch
3/4 inch
Expansion relief valve connector
(min.)
15 mm
15 mm
15 mm
Condensate drain pipework (min.)
21.5 mm
21.5 mm
21.5 mm
G20 gas supply pressure
2.0 kPa
(20.0 mbar)
2.0 kPa
(20.0 mbar)
2.0 kPa
(20.0 mbar)
Gas flow at P max. – hot water
(G20)
1.9 m³/h
2.7 m³/h
3.8 m³/h
Gas flow at P max. – heating mode
(G20)
1.6 m³/h
1.9 m³/h
3.2 m³/h
Gas flow at P min. (G20)
0.480 m³/h
0.533 m³/h
0.762 m³/h
CE number (PIN)
CE-0063CP3646
CE-0063CP3646
CE-0063CP3646
Flue gas mass rate in heating
mode at P min.
2.08 g/s
2.31 g/s
3.30 g/s
Flue gas mass rate in heating
mode at P max.
6.9 g/s
8.3 g/s
13.8 g/s
Flue gas mass rate in hot water
handling mode at P max.
8.3 g/s
11.6 g/s
16.1 g/s
Flue gas temperature (80 °C/60 °C)
at P max.
55 ℃
60 ℃
82 ℃
44
Installation and maintenance instructions ecoFIT sustain 0020277252_00
Appendix
VU 156/6-3 (H-GB)
VU 186/6-3 (H-GB)
VU 306/6-3 (H-GB)
Flue gas temperature (80 °C/60 °C)
at P min.
55 ℃
55 ℃
56 ℃
Flue gas temperature (50 °C/30 °C)
at P max.
48 ℃
51 ℃
56 ℃
Flue gas temperature (50 °C/30 °C)
at P min.
32 ℃
34 ℃
37 ℃
Flue gas temperature in hot water
handling mode
71 ℃
69 ℃
75 ℃
Flue gas temperature when overheating
105 ℃
105 ℃
104 ℃
Released system types
C13, C33, C43, C53
C13, C33, C43, C53
C13, C33, C43, C53
Nominal efficiency at 80/60 °C
98.9 %
98.8 %
99.2 %
Nominal efficiency at 50/30 °C
104.0 %
104.0 %
104.0 %
Nominal efficiency at 40/30 °C
106.0 %
106.0 %
106.0 %
Nominal efficiency in partial load
operation (30%) at 40/30 °C
109.9 %
109.8 %
109.8 %
NOx class
5
5
5
Product dimensions, width
390 mm
390 mm
390 mm
Product dimensions, depth
295 mm
295 mm
295 mm
Product dimensions, height
702 mm
702 mm
702 mm
Net weight
31 kg
31 kg
32 kg
Weight when filled with water
35 kg
35 kg
36 kg
VU 156/6-3 (H-GB)
VU 186/6-3 (H-GB)
VU 306/6-3 (H-GB)
Technical data – Electrics
Electric connection
Built-in fuse (slow-blow)
230 V / 50 Hz
230 V / 50 Hz
230 V / 50 Hz
T2/2A, 250V
T2/2A, 250V
T2/2A, 250V
Max. electrical power consumption
81 W
87 W
104 W
Standby electrical power consumption
2W
2W
2W
IPX4D
IPX4D
IPX4D
Level of protection
0020277252_00 ecoFIT sustain Installation and maintenance instructions
45
Index
Index
A
Air/flue pipe, installed ............................................................ 4
B
Burner anti-cycling time....................................................... 19
Burner anti-cycling time, resetting ....................................... 19
Burner anti-cycling time, setting .......................................... 19
Bypass valve ....................................................................... 21
C
Calling up, fault memory...................................................... 22
CE label ................................................................................. 7
Check programmes ............................................................. 14
Checking the burner ............................................................ 26
Checking the pre-charge pressure of the expansion
vessel .................................................................................. 27
Cleaning the condensate trap ............................................. 26
Cleaning the heat exchanger .............................................. 26
Clearance .............................................................................. 8
Clearing, fault memory ........................................................ 22
CO₂ content
Checking.................................................................. 18, 24
Competent person................................................................. 3
Completing inspection work ................................................ 27
Completing maintenance work ............................................ 27
Condensate discharge pipe................................................. 11
Condensate trap
Filling ............................................................................. 17
Control ................................................................................. 13
Corrosion............................................................................... 4
D
Data plate .............................................................................. 6
Decommissioning ................................................................ 27
Decommissioning the product ............................................. 27
Display and setting options ................................................. 14
Documents ............................................................................ 6
Draining the product ............................................................ 27
E
Electricity ............................................................................... 4
Expansion relief valve ......................................................... 24
F
Fault codes.......................................................................... 21
Fault memory, calling up ..................................................... 22
Fault memory, deleting........................................................ 22
Fault messages ................................................................... 21
Flue gas route ....................................................................... 4
Front casing, closed .............................................................. 4
Frost ...................................................................................... 5
G
Gas family check ................................................................. 15
Gas flow rate ...................................................................... 17
H
Handing over to the end user .............................................. 21
High-efficiency pump........................................................... 20
High-efficiency pump output................................................ 20
I
If you smell flue gas............................................................... 4
If you smell gas ..................................................................... 3
Inspection work ................................................................... 24
Installation site....................................................................... 4
Installer level ....................................................................... 14
Installer level, calling up ...................................................... 14
46
Intended use.......................................................................... 3
L
Leak-tightness ......................................................... 19, 24, 27
M
Mains connection ................................................................ 13
Maintenance work ............................................................... 24
Minimum clearance ............................................................... 8
O
Operating concept ............................................................... 14
P
Power supply....................................................................... 13
Preparing the repair work .................................................... 22
Preparing, repair work ......................................................... 22
Pressure sensor .................................................................. 24
Pump head .......................................................................... 23
Q
Qualification........................................................................... 3
R
Regulations ........................................................................... 5
Removing the air intake pipe............................................... 25
Removing the burner........................................................... 25
Removing the flue gas pipe................................................. 25
Removing the front casing..................................................... 9
Removing the gas-air mixture unit....................................... 25
Removing the ignition transformer ...................................... 25
Removing the side section .................................................... 9
Replacing the burner ........................................................... 22
Replacing the expansion vessel.......................................... 23
Replacing the heat exchanger............................................. 22
Replacing the main PCB ..................................................... 23
Replacing, expansion vessel............................................... 23
S
Safety device......................................................................... 4
Schematic drawing ................................................................ 4
Spare parts.......................................................................... 21
Status codes........................................................................ 14
Switching on the product ..................................................... 16
T
Tool ....................................................................................... 5
Transport ............................................................................... 4
Transporting .......................................................................... 7
Treating the heating water .................................................. 15
U
Unloading the box ................................................................. 7
Unpacking the product .......................................................... 7
User interface, replacing the PCB ....................................... 24
V
Voltage .................................................................................. 4
W
Wall-mounting the product .................................................... 8
Weight ................................................................................... 8
Installation and maintenance instructions ecoFIT sustain 0020277252_00
0020277252_00
0020277252_00
12.04.2018
Supplier
Vaillant Ltd.
Nottingham Road
Belper
Derbyshire
Telephone 0330 100 3461
info@vaillant.co.uk
www.vaillant.co.uk
DE56 1JT
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