Vaillant atmoTEC exclusive User manual

Operating instructions
atmoTEC exclusive,
atmoTEC plus
VC, VCC, VCW
DE
Publisher/manufacturer
Vaillant GmbH
Berghauser Str. 40 D-42859 Remscheid
Tel. [phone]‑0 Fax [phone]‑2810
[email protected] www.vaillant.de

Contents
2Operating instructions atmoTEC exclusive, atmoTEC plus 0020214277_01
Contents
1 Safety .................................................................... 3
1.1 Action-related warnings ......................................... 3
1.2 Intended use .......................................................... 3
1.3 Danger caused by improper operation .................. 3
1.4 Risk of death from escaping gas ........................... 3
1.5 Risk of death due to blocked or leaking flue
pipework ................................................................ 4
1.6 Risk of death due to explosive and flammable
materials ................................................................ 4
1.7 Risk of death due to changes to the product or
the product environment........................................ 4
1.8 Risk of poisoning caused by insufficient
combustion air supply............................................ 4
1.9 Risk of being scalded by hot drinking water .......... 4
1.10 Risk of injury and material damage due to
maintenance and repairs carried out incorrectly
or not carried out at all........................................... 4
1.11 Risk of corrosion damage due to unsuitable
combustion and room air ....................................... 4
1.12 Risk of material damage caused by
calcification ............................................................ 5
1.13 Risk of material damage caused by frost .............. 5
2 Notes on the documentation .............................. 6
2.1 Observing other applicable documents ................. 6
2.2 Storing documents................................................. 6
2.3 Validity of the instructions...................................... 6
3 Product description............................................. 6
3.1 Overview of the control elements .......................... 6
3.2 Information on the data plate................................. 7
3.3 CE label ................................................................. 8
4 Operation.............................................................. 8
4.1 Opening the isolators............................................. 8
4.2 Checking the system pressure on the
manometer............................................................. 8
4.3 Starting up the product .......................................... 8
4.4 Switching on the product ....................................... 8
4.5 Switching off the product ....................................... 9
4.6 Checking the system pressure .............................. 9
4.7 Filling the heating installation ................................ 9
4.8 Setting the heating flow temperature (with
control)................................................................. 10
4.9 Setting the heating flow temperature (without
control)................................................................. 10
4.10 Setting the domestic hot water generation .......... 10
4.11 Switching off the functions of the product............ 12
4.12 Carrying out the flue gas analysis ....................... 12
5 Calling up status codes .................................... 12
6 Detecting and eliminating faults ...................... 13
7 Care and maintenance ...................................... 13
7.1 Maintenance ........................................................ 13
7.2 Caring for the product.......................................... 13
8 Decommissioning.............................................. 13
8.1 Temporarily decommissioning the product.......... 13
8.2 Permanently decommissioning the product......... 14
9 Recycling and disposal..................................... 14
10 Guarantee and customer service..................... 14
10.1 Guarantee............................................................ 14
10.2 Customer service................................................. 14
Appendix ............................................................................ 15
A Status codes –Overview .................................. 15
B Troubleshooting ................................................ 15

Safety 1
0020214277_01 atmoTEC exclusive, atmoTEC plus Operating instructions 3
1 Safety
1.1 Action-related warnings
Classification of action-related warnings
The action-related warnings are classified in
accordance with the severity of the possible
danger using the following warning signs and
signal words:
Warning symbols and signal words
Danger!
Imminent danger to life or risk of
severe personal injury
Danger!
Risk of death from electric shock
Warning.
Risk of minor personal injury
Caution.
Risk of material or environmental
damage
1.2 Intended use
There is a risk of injury or death to the user or
others, or of damage to the product and other
property in the event of improper use or use
for which it is not intended.
The product is intended as a heat generator
for closed heating installations and for hot
water generation.
Applicability: B1 unit types
Dieser Heizkessel mit Naturzug ist für den
Anschluss ausschließlich in bestehenden Ge-
bäuden an eine von mehreren Wohnungen
belegte Abgasanlage bestimmt, die die Ver-
brennungsrückstände aus dem Aufstellraum
ins Freie ableitet. Er bezieht die Verbren-
nungsluft unmittelbar aus dem Aufstellraum
und ist mit einer Strömungssicherung ausge-
stattet. Wegen geringerer Effizienz ist jeder
andere Einsatz dieses Heizkessel zu vermei-
den —er würde zu einem höheren Energie-
verbrauch und höheren Betriebskosten füh-
ren.
Intended use includes the following:
–observance of the operating instructions
included for the product and any other
system components
–compliance with all inspection and main-
tenance conditions listed in the instruc-
tions.
This product can be used by children aged
from 8 years and above and persons with
reduced physical, sensory or mental capabil-
ities or lack of experience and knowledge if
they have been given supervision or instruc-
tion concerning use of the product in a safe
way and understand the hazards involved.
Children must not play with the product.
Cleaning and user maintenance work must
not be carried out by children unless they are
supervised.
Any other use that is not specified in these in-
structions, 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 Danger caused by improper
operation
Improper operation may present a danger to
you and others, and cause material damage.
▶Carefully read the enclosed instructions
and all other applicable documents, par-
ticularly the "Safety" section and the warn-
ings.
▶Only carry out the activities for which in-
structions are provided in these operating
instructions.
1.4 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 com-
munication systems in the building.
▶Close the emergency control valve or the
main isolator.
▶If possible, close the gas isolator cock on
the product.

1 Safety
4Operating instructions atmoTEC exclusive, atmoTEC plus 0020214277_01
▶Warn other occupants in the building by
yelling or banging on doors or walls.
▶Leave the building immediately and ensure
that others do not enter the building.
▶Alert the police and fire brigade as soon as
you are outside the building.
▶Use a telephone outside the building to
inform the emergency service department
of the gas supply company.
1.5 Risk of death due to blocked or
leaking flue pipework
What to do if you smell flue gas in the prop-
erty:
▶Open all accessible doors and windows
fully to provide ventilation.
▶Switch off the product.
▶Inform a competent person.
1.6 Risk of death due to explosive and
flammable materials
▶Do not use the product in storage rooms
that contain explosive or flammable sub-
stances (such as petrol, paper or paint).
1.7 Risk of death due to changes to the
product or the product environment
▶Never remove, bridge or block the safety
devices.
▶Do not tamper with any of the safety
devices.
▶Do not damage or remove any tamper-
proof seals on components.
▶Do not make any changes:
–The product itself
–to the gas, supply air, water and electri-
city supply lines
–to the entire flue system
–to the expansion relief valve
–to the drain pipework
–to constructional conditions that may
affect the operational reliability of the
product
1.8 Risk of poisoning caused by
insufficient combustion air supply
Conditions: Open-flued operation
▶Ensure that there is a sufficient combus-
tion air supply.
1.9 Risk of being scalded by hot drinking
water
There is a risk of scalding at the hot water
draw-off points if the hot water temperatures
are greater than 60 °C. Young children and
elderly persons are particularly at risk, even
at lower temperatures.
▶Select the temperature so that nobody is at
risk.
1.10 Risk of injury and material damage
due to maintenance and repairs
carried out incorrectly or not carried
out at all
▶Never attempt to carry out maintenance
work or repairs on your product yourself.
▶Faults and damage should be immediately
rectified by a competent person.
▶Adhere to the maintenance intervals spe-
cified.
1.11 Risk of corrosion damage due to
unsuitable combustion and room air
Sprays, solvents, chlorinated cleaning
agents, paint, adhesives, ammonia com-
pounds, dust or similar substances may lead
to corrosion on the product and in the air/flue
pipe.
▶Ensure that the combustion air supply is
always free of fluorine, chlorine, sulphur,
dust, etc.
▶Ensure that no chemical substances are
stored at the installation site.

Safety 1
0020214277_01 atmoTEC exclusive, atmoTEC plus Operating instructions 5
1.12 Risk of material damage caused by
calcification
If the water hardness is greater than 3.57
mol/m³, there is a risk of calcification in
products which generate hot water.
▶Set the hot water temperature to a max-
imum of 50 °C.
1.13 Risk of material damage caused by
frost
▶Ensure that the heating installation always
remains in operation during freezing con-
ditions and that all rooms are sufficiently
heated.
▶If you cannot ensure the operation, have a
competent person drain the heating install-
ation.

2 Notes on the documentation
6Operating instructions atmoTEC exclusive, atmoTEC plus 0020214277_01
2 Notes on the documentation
2.1 Observing other applicable documents
▶You must observe all operating instructions enclosed with
the system components.
2.2 Storing documents
▶Keep this manual and all other applicable documents
safe for future use.
2.3 Validity of the instructions
These instructions apply only to:
Product article number
VC DE 104/4-7 A-P 0010018739
VC DE 104/4-7 A-L 0010018740
VC DE 104/4-7 A-H 0010018741
VCC 194/4-5 120 (E-DE), surface-
mounted
0010024478
VCC 194/4-5 120 (E-DE), concealed 0010024480
VCC 194/4-5 120 (LL-DE), surface-
mounted
0010024479
VCC 194/4-5 120 (LL-DE), concealed 0010024481
VCW DE 194/4-5 A-L 0010017844
VCW DE 194/4-5 A-H 0010017845
VCW DE 204/4-7 A-P 0010018745
VCW DE 204/4-7 A-L 0010018746
VCW DE 204/4-7 A-H 0010018747
VCW DE 244/4-5 A-L 0010017846
VCW DE 244/4-5 A-H 0010017847
VCW DE 254/4-7 A-P 0010018742
VCW DE 254/4-7 A-L 0010018743
VCW DE 254/4-7 A-H 0010018744
Applicability: VCC 194/4-5 120 (E-DE), surface-mounted, VCC 194/4-5
120 (E-DE), concealed, VCC 194/4-5 120 (LL-DE), surface-mounted, VCC
194/4-5 120 (LL-DE), concealed
These instructions are only valid in conjunction with the in-
structions for:
–VIH R 120/6 B
–Cylinder retrofitting set
–VRT 350
–Piping set
–Surface-mounted piping set for 120 l
–Concealed piping set for 120 l
3 Product description
3.1 Overview of the control elements
E
bar
3
1 2
45678
9
10
1 Display
2 i button
3 Control (accessory)
4 Manometer
5 Main switch
6 + button
7 - button
8 Reset button
9 Heating flow temperat-
ure rotary knob
10 Domestic hot water
rotary knob
The display shows the current heating flow temperature, the
system pressure of the heating installation, the operating
mode or certain additional information.
The ibutton is used to call up status information.
The control, which is available as an accessory, automatic-
ally controls the flow temperature depending on the outdoor
temperature.
The manometer is used to mechanically display the current
filling pressure of the heating installation.
The main switch is used to switch the product on and off.
The +button is used to switch on the chimney sweep func-
tion.
The −button is used to switch on the chimney sweep func-
tion and to display the filling pressure of the heating installa-
tion.
The Reset button is used to reset the product in the case of
certain faults.
The heating flow temperature rotary knob is used to set the
heating flow temperature if no control is connected. If a con-
trol is connected, the heating flow temperature rotary knob
should be turned clockwise as far as it will go.
VC/VCC: The domestic hot water rotary knob is used to set
the cylinder temperature if a domestic hot water cylinder is
connected.
VCW: The domestic hot water rotary knob is used to set the
domestic hot water outlet temperature.
If a control is connected, the domestic hot water rotary knob
should be turned clockwise as far as it will go. The control
then determines the cylinder temperature.

Product description 3
0020214277_01 atmoTEC exclusive, atmoTEC plus Operating instructions 7
3.1.1 Digital Information and Analysis System
(DIA)
1
2
1 Display showing the
current heating flow
temperature, the filling
pressure in the heating
installation, or a status
or fault code
2 Plain text display (for
atmoTEC exclusive
only)
Symbol Meaning Explanation
Flue gas route Symbol permanently
visible: Fault in the flue
gas route
VR 920 The heating flow and
domestic hot water tem-
perature are specified
via the VR 920 commu-
nications system. The
product works at temper-
atures other than those
set at the rotary knob.
This operating mode can
only be terminated by:
–VR 920
–Changing the tem-
perature at the rotary
knobs by more than
±5 K
This operating mode
cannot be terminated
by:
–Pressing the Reset
button.
–Switching the
product off and on
again
Heating mode –Symbol perman-
ently on: Product is
in heating mode op-
erating mode
–Symbol flashing:
Burner anti-cycling
time is active
Symbol Meaning Explanation
Domestic hot water gen-
eration
VC/VCC*:
–Symbol perman-
ently visible: Char-
ging mode for the
domestic hot water
cylinder is enabled
by the control and
floor-standing boiler
control system
–Symbol flashes: Do-
mestic hot water cyl-
inder is being heated
VCW:
–Symbol permanently
visible: Domestic hot
water is being drawn
off
–Symbol off: No do-
mestic hot water is
being drawn off
Warm start VCW:
–Symbol permanently
visible: Warm start
function is in standby
–Symbol flashes:
Warm start function
is in standby, burner
is switched on
Heating pump operating
Solenoid valve is actu-
ated
Gas supply to the burner
is open
Current energy demand Display of the current
burner modulation rate
(only bar graph display
for atmoTEC exclusive)
Fault during burner oper-
ation
Burner is switched off
Burner operating cor-
rectly
Burner is switched on
* Only when a domestic hot water cylinder is connected
Press the "-" button for approx. five seconds to switch from the
flow temperature display to the system pressure display or vice-
versa.
3.2 Information on the data plate
The data plate is mounted on the underside of the product at
the factory.
Information on the data
plate
Meaning
VC, VCC, VCW Type designation
10, 19, 20, 24, 25 Unit output
/4 Unit generation
-5 = plus, -7 = exclusive Unit type
V Mains voltage
W Power consumption
Hz Mains frequency
MPa Max. line pressure
IP IP rating/protection class
Cat. (e.g. II 2H3P ) Unit category

4 Operation
8Operating instructions atmoTEC exclusive, atmoTEC plus 0020214277_01
Information on the data
plate
Meaning
Type (e.g. B 11) Gas-fired boiler types
2E, G20 –20 mbar (2.0 kPa) Gas group and gas connection
pressure as set at the factory
ww/yyyy (e.g. 11/2014) Date of manufacture:
Week/year
PMW (e.g. 10 bar (1 MPa)) Permissible total excess pres-
sure during domestic hot wa-
ter generation
PMS (e.g. 3 bar (0.3 MPa)) Permissible total excess pres-
sure in heating mode
P Nominal heat output range
Tmax. (e.g. 85 °C) Max. flow temperature
Q Heat input range
D Nominal domestic hot water
draw-off rate
Heating mode
Domestic hot water generation
Barcode with serial number,
The 7th to 16th digits of the
serial number form the article
number
3.3 CE label
The CE label shows that the products comply with the basic
requirements of the applicable directives as stated on the
identification plate.
The declaration of conformity can be viewed at the manufac-
turer's site.
4 Operation
4.1 Opening the isolators
1. Ask the competent person who installed the product to
explain to you where these isolators are located and
how to handle them.
2. Open the gas stopcock installed on-site.
3. Open the gas stopcock on the product.
4. Open the service valves in the heating installation's flow
and return.
Applicability: Product with integrated domestic hot water generation
OR Product with connected domestic hot water cylinder
▶Open the cold-water isolation valve.
4.2 Checking the system pressure on the
manometer
E
bar
1
▶Before starting up the unit, check the installation's filling
pressure on the manometer (1). To ensure that the heat-
ing installation works correctly, a filling pressure between
1.0 and 2.0 bar should be displayed when the installation
is cold (the indicator on the manometer is then located in
the light-grey area). If the filling pressure is lower than 0.8
bar (the indicator on the manometer is then in the dark-
grey area), it must be filled with water before start-up (→
section "Filling the heating installation").
Note
If the heating installation extends over several
storeys, a higher filling pressure may be re-
quired. Ask your competent person for details.
4.3 Starting up the product
▶Only start up the product once the casing has been com-
pletely closed.
4.4 Switching on the product
E
bar
1
1. Use the main switch (1) to switch on the product.
◁1: "ON"
◁When the main switch is in position 1, the product is
switched on and the standard display for the Digital
Information and Analysis System is shown in the
display .
2. Set up your product according to your needs.

Operation 4
0020214277_01 atmoTEC exclusive, atmoTEC plus Operating instructions 9
4.5 Switching off the product
E
bar
1
1. Use the main switch (1) to switch off the product.
–In order for the protection modes, such as frost pro-
tection, to remain activated, only activate and de-
activate the product using the control (you can find
information about this in the relevant operating in-
structions).
◁0: "OFF"
2. If no control is present, turn the adjuster anti-clockwise
as far as it will go to switch off the heating and domestic
hot water mode.
4.6 Checking the system pressure
E
bar
1
1−button
▶Check the heating installation's filling pressure at regular
intervals. Briefly press the −(1) button.
◁The display will show the filling pressure for approx-
imately 5 seconds.
◁The filling pressure must lie between 1.0 and 2.0 bar
when the heating installation is cold in order for the
heating installation to operate properly. If the pres-
sure is lower, you must add heating water before
starting up.
Note
You can permanently switch between the tem-
perature or pressure display in the display by
pressing and holding the –button for approx-
imately five seconds.
Note
To avoid operating the heating installation with
an insufficient water volume and to prevent
potential subsequent damage, the product is
fitted with a pressure sensor. The pressure
sensor signals the low pressure level if the
level falls below 0.6 bar. This is signalled by
the system pressure value in the display flash-
ing. If the level falls below 0.03 MPa (0.3 bar),
the system displays the fault message and
F.22 alternately, and the burner is blocked. If
the system pressure is lower than 0.06 MPa
(0.6 bar), fill the heating installation up again
as quickly as possible. As soon as the sys-
tem pressure rises above 0.6 bar, the product
starts up again without any further measures
being required.
Note
If the heating installation extends over several
floors, a higher system pressure for the heat-
ing installation may be necessary. Ask your
competent person for details.
4.7 Filling the heating installation
Caution.
Risk of material damage due to heating
water that is extremely calciferous or cor-
rosive or contaminated by chemicals.
Unsuitable tap water damages the seals
and diaphragms, blocks components in the
product and heating installation through
which the water flows and causes noise.
▶Only fill the heating installation with suit-
able heating water.
▶In case of doubt, ask a competent person
for details.
Note
The competent person is responsible for filling the
heating installation the first time.
1. Connect the filling tap to a cold water pipe, as explained
by the competent person.
2. Open all radiator valves (thermostatic valves) of the
heating installation.
3. Open the cold water pipe.
4. Turn the filling tap on slowly and allow water to flow in
until the required system pressure has been reached.
5. Close the cold water pipe.
6. Purge all radiators.
7. Check the filling pressure of the heating installation.
(→Page 9)
8. Top up with more water if required.
9. Close the filling tap.
10. Disconnect the filling tap from the cold water pipe.

4 Operation
10 Operating instructions atmoTEC exclusive, atmoTEC plus 0020214277_01
4.8 Setting the heating flow temperature (with
control)
E
bar
1
1. Set the rotary knob for the heating flow temperature (1)
to the clockwise end stop.
2. Set the required heating flow temperature on the control
(→Control operating instructions).
4.9 Setting the heating flow temperature
(without control)
E
bar
2
1
▶Set the target flow temperature on the rotary knob for
the heating flow temperature (1) in accordance with the
outdoor temperature.
Position Meaning Outdoor temperat-
ure
Fully left Frost protection
Anti-clockwise (but
not at the end stop) Transition Time
Approx.
10 … 20 ℃
(50.0 … 68.0 ℉)
Centre Moderate cold
Approx.
0 … 10 ℃
(32.0 … 50.0 ℉)
Clockwise Extreme cold Below
0℃(32.0 ℉)
◁After turning the rotary knob for the heating flow tem-
perature, the display shows the set target flow tem-
perature (2). After three seconds, this display goes
out and the default display reappears (current heating
flow temperature).
Note
The maximum heating flow temperature is set
in the factory at 75 °C. This can be defined by
the competent person to be between 40 °C
and 85 °C.
4.10 Setting the domestic hot water generation
4.10.1 Setting the domestic hot water temperature
Applicability: Product with integrated domestic hot water generation
E
bar
1
2
1. Switch on the product (→"Switching on the product"
section).
2. Set the rotary knob (1) for setting the domestic hot wa-
ter temperature to the required temperature.
–Domestic hot water temperature: Left-hand stop
approx. 35 °C, right-hand stop max. 65 °C.
–When setting the required temperature, the associ-
ated target value is shown in the display (2). After
approx. five seconds, this display goes out and the
normal default display reappears (current flow tem-
perature of the heating installation).
Applicability: Product with connected domestic hot water cylinder
Conditions: Control connected
E
bar
1
2
▶Switch on the product (→"Switching on the product"
section).
▶Set the domestic hot water rotary knob (1) as far as it
will go clockwise so that the control can work without
any faults occurring.
Danger!
Risk of death from legionella.
Legionella multiply at temperatures below
60 °C.

Operation 4
0020214277_01 atmoTEC exclusive, atmoTEC plus Operating instructions 11
▶Have a competent person inform you
about the measures that should be
taken to protect against Legionella in
your installation.
▶Do not set any water temperatures
below 60 °C without consulting the
competent person first.
▶Set the required cylinder temperature on the control.
Conditions: No control connected
E
bar
1
2
Danger!
Risk of death from legionella.
Legionella multiply at temperatures below
60 °C.
▶Have a competent person inform you
about the measures that should be
taken to protect against Legionella in
your installation.
▶Do not set any water temperatures
below 60 °C without consulting the
competent person first.
▶Set the domestic hot water rotary knob (1) to the re-
quired cylinder temperature.
–The required temperature is shown in the display
(2). After three seconds, this display goes out and
the default display reappears (current heating flow
temperature)
4.10.2 Switching on the warm start function
Applicability: atmoTEC exclusive, Product with integrated domestic hot
water generation
b
a
1
▶To switch on the warm start function, turn the do-
mestic hot water rotary knob (1) clockwise as far as it
will go (setting (a)).
▶Set the rotary knob to the required domestic hot water
temperature (e.g. setting (b)).
–The keep-warm temperature is automatically ad-
justed to the set domestic hot water temperature.
The heated water is then immediately available
when you draw it off. The symbol flashes in the
display.
Applicability: atmoTEC plus, Product with integrated domestic hot water
generation
b
a
1
▶To switch on the warm start function, turn the do-
mestic hot water rotary knob (1) clockwise as far as it
will go (setting (a)).
–The keep-warm temperature is automatically ad-
justed to the set domestic hot water temperature.
The heated water is then immediately available
when you draw it off. The symbol flashes in the
display.
4.10.3 Switching off the warm start function
Applicability: atmoTEC exclusive, Product with integrated domestic hot
water generation
b
c
1
▶To switch off the warm start function, turn the do-
mestic hot water rotary knob (1) anti-clockwise as far
as it will go (setting (c)).
–The symbol goes out.
▶Set the rotary knob to the required domestic hot water
outlet temperature (e.g. setting (b)).
Applicability: atmoTEC plus, Product with integrated domestic hot water
generation
b
c
1
▶To switch off the warm start function, turn the do-
mestic hot water rotary knob (1) anti-clockwise as far
as it will go (setting (c)).

5 Calling up status codes
12 Operating instructions atmoTEC exclusive, atmoTEC plus 0020214277_01
–The symbol goes out.
▶Set the rotary knob to the required domestic hot water
outlet temperature (e.g. 45 °C).
4.11 Switching off the functions of the product
4.11.1 Switching off domestic hot water generation
Applicability: Product with connected domestic hot water cylinder
Conditions: Control connected
▶Use the control to switch off domestic hot water gen-
eration.
Conditions: No control connected
▶Turn the domestic hot water rotary knob anti-clock-
wise as far as it will go.
◁Cylinder charging mode is switched off.
◁The frost protection function is activated for the
domestic hot water cylinder.
◁The display shows the target cylinder temperature
of 15 °C for three seconds.
–15 ℃(59.0 ℉)
Note
The effect of the frost protection function
is that, at cylinder temperatures below
10 °C, the domestic hot water generation
is switched on until the water in the cylin-
der has reached 15 °C again.
4.11.2 Switching off heating mode (Summer mode)
Conditions: Control connected
E
bar
1
▶To switch off heating mode, use the control to switch off
heating mode and leave the heating flow temperature
rotary knob (1) at the clockwise end stop.
Conditions: No control connected
E
bar
1
▶To switch off heating mode, turn the heating flow tem-
perature rotary knob (1) anti-clockwise as far as it will
go.
–The product's internal frost protection is therefore
guaranteed whether there is a control or not.
4.12 Carrying out the flue gas analysis
Note
Measurement and inspection work must only be
carried out by the chimney sweep or competent
person.
E
bar
1 2
1−button 2 +button
1. Switch on the chimney sweep function by pressing the
−and +buttons for the DIA system at the same time.
◁Shown in the display (only for atmoTEC exclusive):
S.Fh = heating chimney sweep mode; S.Fb = do-
mestic hot water chimney sweep mode
◁The product now works at maximum load for 15
minutes. If you do not press any buttons for 15
minutes or if a flow temperature of 85 °C is reached,
the chimney sweep function is automatically
switched off.
2. Take the measurements at the earliest after three
minutes of the product operating.
3. Carry out the measurement in accordance with the core
current method.
5 Calling up status codes
E
bar
1
2
1 Display 2 ibutton
1. Call up the product status by pressing the ibutton.
2. Switch the display back to normal operating mode by
pressing theibutton.
Status codes –Overview (→Page 15)

Detecting and eliminating faults 6
0020214277_01 atmoTEC exclusive, atmoTEC plus Operating instructions 13
6 Detecting and eliminating faults
▶If faults or fault messages (F.XX) occur, proceed in ac-
cordance with the table in the appendix.
▶If the product is not functioning correctly, contact a com-
petent person.
7 Care and maintenance
7.1 Maintenance
Annual inspection and maintenance of the product by a com-
petent person is required to ensure that the product is per-
manently ready and safe for operation, reliable, and has a
long service life.
7.2 Caring for the product
▶Clean the casing with a damp cloth and a little solvent-
free soap.
▶Do not use sprays, scouring agents, detergents, solvents
or cleaning agents that contain chlorine.
8 Decommissioning
8.1 Temporarily decommissioning the product
Caution.
Risk of material damage due to frost
The frost protection and monitoring devices
are only active while the unit is connected
to the power grid, the product is switched on
via the main switch and the gas stopcock is
open.
▶You must use the control if you want to
activate and deactivate the product in
normal mode.
▶If no control is present when a main switch
has been switched on, set the rotary
knobs for the target heating flow and
cylinder values to the anti-clockwise end
stop.
▶Do not disconnect the product from the
power grid when it is in normal mode.
▶Leave the main switch in position 1 in
normal mode.
E
bar
3
2
1
1 Main switch
2 Heating flow temperat-
ure rotary knob
3 Domestic hot water
rotary knob
1. Turn the domestic hot water rotary knob (3) anti-clock-
wise as far as it will go.
2. Turn the rotary knob for the heating flow temperature
(2) anti-clockwise as far as it will go.
3. Turn the main switch (1) to position 0.
4. Close the gas stopcock and the cold-water isolation
valve.
–The isolators are not included in the scope of deliv-
ery for your product. They are installed on-site by
the competent person. Ask the competent person
to explain where the isolators are located and how
they are operated.
8.1.1 Preventing frost damage
The product is equipped with a frost protection function.
If the heating flow temperature falls below 8 °C when the
main switch is switched on, the product's pump starts up.
If the heating flow temperature falls below 5 °C when the
main switch is switched on, the product starts up and heats
the circulating water on both the heating side and the hot-
water side (if available) to approx. 30 °C.
Caution.
Risk of material damage due to frost.
The frost protection function cannot guaran-
tee flow through the entire heating installa-
tion, which means that parts of the heating
installation may freeze and therefore become
damaged.
▶During a period of frost, ensure that the
heating installation remains in operation
and that all rooms are sufficiently heated,
even when you are away.
▶Consult a competent person about this.
8.1.2 Draining the heating installation
Another way to protect the heating installation and the
product from frost for very long switch-off periods is to drain
them completely.
▶Consult a competent person about this.

9 Recycling and disposal
14 Operating instructions atmoTEC exclusive, atmoTEC plus 0020214277_01
8.2 Permanently decommissioning the product
▶Have a competent person permanently decommission
the product.
9 Recycling and disposal
▶The competent person who installed your product is re-
sponsible for the disposal of the packaging.
If the product is labelled with this mark:
▶In this case, do not dispose of the product with the
household waste.
▶Instead, hand in the product to a collection centre for
waste electrical or electronic equipment.
If the product contains batteries that are labelled with
this mark, these batteries may contain substances that are
hazardous to human health and the environment.
▶In this case, dispose of the batteries at a collection point
for batteries.
10 Guarantee and customer service
10.1 Guarantee
Herstellergarantie gewähren wir nur bei Installation durch
einen anerkannten Fachhandwerksbetrieb.
Dem Eigentümer des Geräts räumen wir diese Hersteller-
garantie entsprechend den Vaillant Garantiebedingungen
ein. Garantiearbeiten werden grundsätzlich nur von unserem
Kundendienst ausgeführt. Wir können Ihnen daher etwaige
Kosten, die Ihnen bei der Durchführung von Arbeiten an dem
Gerät während der Garantiezeit entstehen, nur dann erstat-
ten, falls wir Ihnen einen entsprechenden Auftrag erteilt ha-
ben und es sich um einen Garantiefall handelt.
10.2 Customer service
Auftragsannahme Vaillant Kundendienst: 021 91 5767901

Appendix
0020214277_01 atmoTEC exclusive, atmoTEC plus Operating instructions 15
Appendix
A Status codes –Overview
Status code Meaning
Displays in heating mode
S.0 Heating: No heat demand
S.2 Heating mode: Pump prerun
S.3 Heating mode: Ignition
S.4 Heating mode: Burner on
S.7 Heating mode: Pump overrun
S.8 Heating, remaining anti-cycling time xx mins
Displays in domestic hot water mode
S.10 Domestic hot water requirement
S.14 DHW mode: Burner on
Displays in Comfort mode with warm start or domestic hot water mode with cylinder
S.20 Domestic hot water requirement
S.24 DHW mode: Burner on
Other displays
S.31 Summer mode active or eBUS control is blocking heating mode
S.34 Boiler frost protection mode is active
S.39 The external safety switch is off
B Troubleshooting
Fault Cause Measure
Product does not start
up:
–No hot water
–Heating remains cold
The gas stopcock installed on-site and/or the gas stop-
cock on the product is closed.
Open both gas stopcocks.
The cold-water isolation valve is closed. Open the cold-water isolation valve.
The power supply in the building is disconnected. Check the fuse in the building. The product
switches on automatically when the power is
restored.
The product is switched off. Switch on the product (→"Switching on the
product" section).
The heating flow temperature is set too low or to the
Heating off position, and/or the domestic hot water tem-
perature is set too low.
Set the heating flow temperature and domestic
hot water temperature (→"Setting the heating
flow temperature" section/→"Setting the do-
mestic hot water temperature" section).
The system pressure is insufficient.
Water deficiency in the heating installation (fault mes-
sage: F.22,F.23,F.24)
Fill the heating installation (→"Filling the heating
installation" section).
There is air in the heating installation. Have your competent person purge the heating
installation.
After three unsuccessful ignition attempts, the product
switches to fault mode (fault message: F.28).
Press and hold the Reset button for one second.
The product makes another attempt to ignite the
flame.
If you have been unable to eliminate the ignition
fault after three reset attempts, consult a com-
petent person.
There is a fault in the flue gas route (fault message:
F.36).
Have your competent person rectify the fault.
Domestic hot water gen-
eration functioning cor-
rectly; heating does not
start up.
The external control is not set correctly. Set the external control correctly (→Control oper-
ating instructions).

0020214277_01 22.05.2018
Supplier
Vaillant Deutschland GmbH & Co.KG
Berghauser Str. 40 D-42859 Remscheid
Telefon [phone]‑0 Telefax 021 91 18‑2810
Auftragsannahme Vaillant Kundendienst 021 91 5767901
[email protected] www.vaillant.de
© These instructions, or parts thereof, are protected by copyright and may be reproduced or distributed only with
the manufacturer's written consent.
We reserve the right to make technical changes.
0020214277_01