STIEBEL ELTRON AUK 7 Instruction Manual

BEDIENUNG UND INSTALLATION
OPERATION AND INSTALLATION
UTILISATION ET INSTALLATION
KEZELÉS ÉS TELEPÍTÉS
KÄYTTÖ JA ASENNUS
GEBLÄSEKONVEKTOR | FAN CONVECTOR | VENTILO-CONVECTEUR | KLÍMAKONVEKTOR |
PUHALLINKONVEKTORI
» AUK 7
» AUK 14
» AUK 21
» AUK 28
» AUK 35

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CONTENTS | SPECIAL INFORMATION
SPECIAL INFORMATION
OPERATION
1. General information �����������������������������������������2
1.1 Document information������������������������������������������ 2
1.2 Key to symbols ��������������������������������������������������� 2
1.3 Other symbols in this documentation ����������������������� 2
OPERATION
2. Safety����������������������������������������������������������3
2.1 Intended use������������������������������������������������������ 3
2.2 Incorrect use ����������������������������������������������������� 3
2.3 Safety information����������������������������������������������� 3
2.4 CE designation ��������������������������������������������������� 3
2.5 Test symbols ������������������������������������������������������ 3
3. Appliance description ���������������������������������������3
4. Operation �����������������������������������������������������3
4.1 Controls������������������������������������������������������������ 3
4.2 Frost protection �������������������������������������������������� 4
4.3 Energy saving advice�������������������������������������������� 4
5. Cleaning, care and maintenance ���������������������������5
5.1 Cleaning the appliance casing �������������������������������� 5
5.2 Cleaning the fluff filter������������������������������������������ 5
6. What to do if ...�����������������������������������������������6
INSTALLATION
7. Safety����������������������������������������������������������7
7.1 General safety instructions ������������������������������������ 7
7.2 Instructions, standards and regulations �������������������� 7
8. Appliance description ���������������������������������������7
8.1 Standard delivery������������������������������������������������ 7
9. Installation����������������������������������������������������7
9.1 Installation location ��������������������������������������������� 7
9.2 Inspection on delivery ������������������������������������������ 8
9.3 Handling����������������������������������������������������������� 8
9.4 Installation �������������������������������������������������������� 8
10. Appliance handover���������������������������������������� 11
11. Troubleshooting �������������������������������������������� 11
12. Cleaning, maintenance and repair ����������������������� 11
12.1 Cleaning the heat exchanger ��������������������������������� 11
12.2 Shutting off the throughput ���������������������������������� 11
13. Specification ������������������������������������������������ 12
13.1 Dimensions and connections��������������������������������� 12
13.2 Wiring diagram for AUK 7������������������������������������� 13
13.3 Wiring diagram for AUK 14-35 ������������������������������� 14
13.4 Data table �������������������������������������������������������� 15
13.5 Output data ������������������������������������������������������ 16
WARRANTY
ENVIRONMENT AND RECYCLING
SPECIAL INFORMATION
- The appliance may be used by children aged8
and up and persons with reduced physical,
sensory or mental capabilities or a lack of
experience and know-how, provided that they are
supervised or they have been instructed on how
to use the appliance safely and have understood
the resulting risks. Children must never play with
the appliance. Children must never clean the
appliance or perform user maintenance unless
they are supervised.
- When permanently connected to the mains via an
appliance wall socket, ensure that the appliance
can be separated from the power supply with an
isolator that disconnects all poles with at least
3mm contact separation. For this, you can use
contactors, main isolators or fuses.
- The connection must be made via an RCD with a
tripping current of 30 mA.
- Fix the appliance in position as described in
chapter "Installation/ Installation/ Installation
location"
- Never place any flammable objects on top of the
appliance.
- Never operate this appliance if the minimum
clearances to adjacent objects are not maintained
(for minimum clearances see chapter "Installation
location").
- Before any cleaning and maintenance work,
isolate the appliance from the power supply.

OPERATION
GENERAL INFORMATION
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OPERATION
1. General information
1.1 Document information
The chapter "Operation" is intended for the equipment user and
the heating contractor.
The chapter "Installation" is intended for the heating contractor.
Read these instructions carefully before using the appliance and retain them for future reference.
If the appliance is passed on to a third party, please hand
these instructions to the new user.
1.2 Key to symbols
1.2.1 Layout of safety information
DANGER Electrocution Before any work on the appliance,
disconnect all poles from the power supply.
13
4
2
1 Symbol (see chapter "Symbols")
2 Keyword (see chapter "Keywords")
3 Symbol (see chapter "Symbols")
4 Information text
1.2.2 Symbols
Warning
symbol
Description
Injury
Electrocution
Burns or scalding
!
Other situations
Fire
Never cover the appliance
1.2.3 Keywords
KEYWORD
DANGER The keyword DANGER indicates information which must be
observed, otherwise serious injury or death will result.
WARNING The keyword WARNING indicates information that must be
observed, otherwise serious injury or death may result.
CAUTION The keyword CAUTION indicates information that must be
observed, otherwise relatively serious or light injuries may
result.
1.3 Other symbols in this documentation
Please read Text next to this symbol is particularly important.
»These passages and the "»" symbol indicates that you have to
do something. The action you need to take is described step
by step.
- Passages with the "–" symbol show you lists of items.
Symbol Description
Appliance disposal
1.3.1 Symbols on the appliance:
Disposal Appliances with this marking are not suitable for general
waste disposal, and should therefore be disposed of
separately.
1.3.2 Units of measurement in this documentation:
The measurements in this document are given in mm.
OPERATION

OPERATION
SAFETY
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2. Safety
!This appliance is designed for internal installation.
However, it must never be installed in wet areas.
2.1 Intended use
This appliance is designed to heat living areas.
Any other use beyond that described shall be deemed inappropriate.
Observation of these instructions is also part of the correct use of
this appliance. Any modifications or conversions to the appliance
void all warranty rights.
2.2 Incorrect use
Never use the appliance in rooms exposed to oil vapours, such
as workshops.
Never sit or stand on the appliance.
2.3 Safety information
DANGER Risk of fire Never operate this appliance ...
—if the minimum clearances to adjacent objects
are not maintained (for minimum clearances see
chapter "Installation location").
—if an appliance component is damaged, the
appliance has fallen over or already had a fault.
DANGER Risk of fire Never place any flammable objects on top of the
appliance.
Untrained personnel must only carry out simple maintenance
tasks, such as cleaning the filter mat.
WARNING Risk of injury The appliance may be used by children aged8 and up
and persons with reduced physical, sensory or mental
capabilities or a lack of experience and know-how,
provided that they are supervised or they have been
instructed on how to use the appliance safely and have
understood the resulting risks. Children must never
play with the appliance. Children must never clean the
appliance or perform user maintenance unless they are
supervised.
Never insert any objects into the air inlet and outlet apertures.
2.4 CE designation
The CE designation shows that the appliance meets all essential
requirements:
- Electromagnetic Compatibility Directive
- Low Voltage Directive
2.5 Test symbols
See type plate on the appliance. See chapter "What to do if ..."
3. Appliance description
The appliance is a fan convector designed for wall mounting. A
heat exchanger draws heat from the heating circuit and transfers
it to the ambient air. The appliance operates with lower flow
temperatures than conventional radiators.
Air is drawn into the lower area at the front of the appliance.
Inside the appliance, the air is heated by the heat exchanger.
Once heated, the air is blown out forwards and diagonally at the
top of the appliance.
The fan constantly circulates the room air and ensures a pleasant
temperature distribution in the room. The integral filter cleans the
room air. The air volume transported by the fan can be selected
in three stages.
For reasons of comfort, the fan only switches ON at flow
temperatures above 25°C to prevent cold air from being blown
into the room. If the flow temperature drops below 18°C, the fan
switches OFF.
The maximum flow temperature must not exceed 55°C.
4. Operation
4.1 Controls
26�03�14�0032
1
2
3
1 Temperature selector
2 Fan stage selector
3 ON/OFF switch
Two rotary selectors are located at the top right of the appliance.
With these, you can select the room temperature and the fan
speed as required.
Use the ON/OFF switch to turn the appliance ON and OFF.
4.1.1 Temperature selector
You can adjust the room temperature with the temperature
selector on the left. Adjustments are made as with a thermostatic
valve on a conventional radiator.

OPERATION
OPERATION
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4.1.2 Fan stage selector
The right selector controls the air volume transported by the fan.
It is a four-stage switch.
These stages control the speed at which the appliance emits heat.
We recommend operating the fan at the lowest stage. Although
higher fan stages enable faster heat emission, they create louder
fan noise.
26�03�14�0032
12
3
4
1 Fan stage 1 (low)
2 Fan stage 2 (medium)
3 Fan stage 3 (high)
4 Fan stage 4 (extra high)
4.2 Frost protection
26�03�14�0032
1
2
1 Temperature selector in frost protection setting
2 ON/OFF switch ON
The appliance is in frost protection mode when the temperature
selector is in the frost protection setting. To protect the appliance
against frost, the ON/OFF switch must be ON.
4.3 Energy saving advice
In heating mode, do not open doors and windows too often and
prevent draughts.

OPERATION
CLEANING, CARE AND MAINTENANCE
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5. Cleaning, care and maintenance
WARNING Risk to life through electrocution!
Before any cleaning and maintenance work, isolate the
appliance from the power supply.
To ensure correct operation of the appliance, the following
inspections and maintenance steps should be carried out.
The frequency with which maintenance work needs to be carried
out depends on the installation location, for example on the level
of dust.
5.1 Cleaning the appliance casing
Use a dry cloth to clean the outside of the appliance. If it is very
dirty, slightly moisten the cloth. Ensure that no moisture enters
the inside of the appliance. Never use scouring or cleaning agents.
5.2 Cleaning the fluff filter
5.2.1 Normal cleaning
To protect the heat exchanger against dirt, a fluff filter is integrated
behind the inlet grille. Dirty fluff filters restrict the air flow and
reduce the appliance efficiency.
For normal use, it is sufficient to check and, if necessary, clean
the fluff filter once a month.
»Switch the appliance OFF.
»Wait until the fan has stopped.
26�03�14�0040
»Without removing the inlet grille, clean the inlet grille and
the fluff filter located behind it with a vacuum cleaner.
Only remove the inlet grille if there is dirt on the appliance which
cannot be removed by a vacuum cleaner. In that case, proceed
as follows:
5.2.2 Heavy duty cleaning
»Switch the appliance OFF.
»Wait until the fan has stopped.
26�03�14�0041
»Undo both screws on the inlet grille.
»Lift the inlet grille slightly and pull it forwards and away from
the appliance.
A safety switch ensures that the fan stops as soon as inlet grille
and fluff filter are removed.
»Remove the fluff filter carefully.
26�03�14�0042
»Clean the fluff filter with a brush and then rinse with
lukewarm water.
»Let the fluff filter dry.
»Reinsert the fluff filter.
»Re-attach the inlet grille using the two screws.
Never operate the appliance without a fluff filter.

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INSTALLATION
WHAT TO DO IF ...
6. What to do if ...
Symptom Cause » Remedy
The appliance is noisy Water circulating in the appliance can cause noise. The appliance is not faulty and no action is required.
Depending on the fan speed selected, noises can occur
at the air outlet.
The appliance is not faulty. Change the fan speed if necessary.
Unpleasant odours are emitted As the appliance draws air from the room, unpleasant
odours, caused for example by heaving smoking, can
build up in the appliance. The air that is subsequently
emitted can sometimes take on these odours.
Clean the fluff filter.
The appliance does not work The appliance is not switched on. Switch ON the appliance at the ON/OFF switch.
The fuse/MCB has tripped or the fuse is faulty. Check the fuse/MCB in your fuse box/distribution panel.
The thermostat has not enabled heating because the
room temperature is higher than the set temperature
selected.
No action is required. The appliance will start again when the room
temperature drops.
The flow temperature is lower than 25 °C. A thermostat
has switched the fan off.
This is not a fault. For reasons of comfort, the fan only switches ON at
flow temperatures above 25°C to prevent cold air from being blown into
the room. If the flow temperature drops below 18°C, the fan switches
OFF.
The internal safety temperature controller has
switched the appliance off.
The appliance has a safety temperature controller that switches the
appliance off if it overheats. After the cause has been removed (for
example air outlet or inlet apertures covered) and the appliance has
cooled down, operation starts again.
The output is too low Air cannot flow freely inside the appliance. Ensure that no objects (e.g. curtains) near the air outlet or air inlet
apertures are obstructing the air flow.
The filter is dirty and reduces the air volume that can
be transported.
Clean the fluff filter.
Windows and doors are open. Close all windows and doors to prevent heat from escaping.
Set temperature has been adjusted incorrectly. Adjust the room temperature with the left rotary selector.
The heating system flow temperature is too low. Increase the flow temperature at the control unit of your heating
system.
The heat demand of the room is too high. Select a higher fan stage.
The appliance does not heat up
immediately
After switching the appliance on, the fan does not start
until the appliance has been supplied with hot water.
No action is required. The appliance emits heat after two to three
minutes.
If you cannot remedy the fault, notify your heating contractor. To
facilitate and speed up your enquiry, please provide the appliance
number from the type plate.
AUK xx
Nr.: 22795x - xx/xx - 0000xx
Typ: xx kg
Made in Germany
287975 -35267
*22795xxxxxxxxxxxM*
26�03�14�0039
1
1 Appliance number

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INSTALLATION
SAFETY
INSTALLATION
7. Safety
Only qualified contractors should carry out installation,
commissioning, maintenance and repair of the appliance.
7.1 General safety instructions
WARNING Risk to life through electrocution! Electrical components are 'live'.
»Before any cleaning and maintenance work, isolate
the appliance from the power supply.
WARNING Risk of injury through moving parts. Fan motors can start automatically. Before opening
the casing, switch the appliance OFF and remove the
appliance fuse.
We guarantee trouble-free operation and operational reliability
only if the original accessories and spare parts intended for the
appliance are used.
7.2 Instructions, standards and regulations
Observe all applicable national and regional regulations and instructions.
8. Appliance description
The heating connections are located on the left and right side of
the appliance casing.
The electrical connections are located behind the swing door on
the right side of the appliance.
8.1 Standard delivery
- Fan convector
- Wall mounting bracket (hooked into the back of the appliance)
9. Installation
9.1 Installation location
When selecting the installation location, observe the critical
environmental factors that influence the use of the appliance.
Critical
environmental
factor
Examples Application
Air lightly or heavily
contaminated with dust.
The heat exchanger will
become clogged.
Factories producing
cement, lime or
gypsum
Usage only possible with
reduced maintenance
intervals
Warehouses Usage only possible with
reduced maintenance
intervals
Hairdressing salons Usage only possible with
reduced maintenance
intervals
Atmosphere containing
ammonia.
The heat exchanger will
corrode.
Sewage works
If handling faeces
Use of the appliance is not
permissible
Use of the appliance is not
permissible
Environments with
oil fog.
The heat exchanger will
become clogged.
Machinery rooms
(lathe or milling work)
Usage only possible with
reduced maintenance
intervals
- Only install the appliance in rooms free from the risk of frost.
- Only use the appliance in living spaces or similar areas.
- Only mount the appliance on vertical and load-bearing walls.
- Always install the appliance horizontally.
- Ensure that curtains, furniture and other objects do not cover
or restrict the air flow at the air inlet or air outlet grille.
- Do not install the appliance in wet areas.
- Observe the following minimum clearances during
installation:
*
26�03�14�0034
* We recommend a floor clearance of 100mm.
The back of the appliance must be fixed to the wall. Never install
the appliance on the floor.

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INSTALLATION
INSTALLATION
9.2 Inspection on delivery
»Upon receipt, immediately check that the delivery is complete
and without transport damage.
If you notice any transport damage, proceed as follows:
- Do not accept the delivery or only accept it with reservation.
- Note all damage on the delivery documentation or on the
delivery slip of the carrier.
- Initiate a claim.
!Initiate the claim for damages without delay.
Make a claim for any fault as soon as it is detected.
Claims for damages can only be made within the valid
claim period.
9.3 Handling
CAUTION Risk of injury through heavy loads
Observe the weight of the appliance. When handling, use
suitable transport aids or sufficient manpower.
!
Damage through incorrect handling Incorrect handling can lead to material losses. Observe
the information on the packaging. Only remove the
packaging shortly before the installation.
9.4 Installation
26�03�14�0035
Parts of the casing at the l.h. and r.h. side of the appliance can
be pivoted out. Both of these swing doors are secured with two
quarter turn locks.
»Turn the quarter turn lock by 90° with a screwdriver to release.
»Pivot the swing doors out to the side.
9.4.1 Pulling out the spring pin
The wall mounting bracket is fixed to the appliance with two spring
pins. This prevents the appliance from falling off the mounting
bracket after installation.
To fix the wall mounting bracket to the wall, it temporarily needs
to be taken off the appliance.
After opening the swing doors, you will see a spring pin located in
the upper part just in front of the back panel. There is one spring
pin on the l.h. and one spring on the r.h. side of the appliance.
26�03�14�0047
1
1 Spring pin
»Pull out the spring pins.
9.4.2 Removing the wall mounting brackets from the appliance
26�03�14�0048
1
1 Wall mounting bracket
»To remove the wall mounting bracket from the back panel
of the appliance, pull it downwards and then away from the
back panel.

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INSTALLATION
INSTALLATION
9.4.3 Drilling holes in the wall
You can use the mounting bracket as a template for the holes to
be drilled.
»Position the mounting bracket on the wall observing the
minimum clearances (see chapter "Installation/Installation
location") and mark the holes to be drilled.
»Ensure that the appliance can be mounted to the wall
horizontally. Level out any unevenness in the wall.
9.4.4 Fixing the mounting bracket to the wall
26�03�14�0044
Select fixing materials according to the load-bearing capacity of
the wall.
»Fix the mounting bracket to the wall with suitable rawl plugs
and screws.
9.4.5 Hooking the appliance into the mounting bracket
26�03�14�0045
Hook the appliance by its slots at the back onto the wall mounting
bracket tabs.
»Position the appliance on the lower wall mounting bracket
first. Insert the tabs of the wall mounting bracket into the
slots where the appliance back panel and the floor plate
meet.
»Tilt the appliance towards the wall until the upper hooks of
the mounting bracket click into the appliance.
9.4.6 Inserting the spring pins
26�03�14�0046
»Open the doors of the appliance.

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INSTALLATION
INSTALLATION
»On both the r.h. and l.h. side of the appliance, push a spring
pin through the wall mounting bracket tabs that hook into
the appliance.
9.4.7 Water connection
When tightening the fittings, always counterhold with a tool.
26�03�14�0033
11
2
2
2
1 Heating flow connection
2 Heating return connection
There are heating system connections on both the l.h. and r.h. side
of the appliance. You can choose on which side you would like to
connect the flow and return. We recommend connecting the flow
and return on the l.h. side of the appliance.
In its delivered condition, the hydraulic connections are protected
with dummy plugs.
»Undo the dummy plugs from the chosen connection points.
»Connect the appliance to the flow and return of the heating
system.
Installing the appliance as a replacement:
If the appliance is being installed to replace an old radiator, the
radiator valve of the old radiator should be removed.
If you do not remove this radiator valve, you must open it fully. The
screw top of the radiator valve should also be removed.
9.4.8 Tightness test
»Carry out a tightness test.
WARNING Risk to life through electrocution!
Ensure that the appliance is isolated from the power
supply during the tightness test.
»Vent the appliance.
9.4.9 Electrical connection
The electrical connection must only be carried out by a qualified
electrician. The terminals are located behind the swing door on
the r.h. side of the appliance.
»Open the swing door as shown at the beginning of this
chapter.
26�03�14�0031
3
1
2
3
1 Mains terminals
2 Strain relief
3 Cable entry for electrical connection
»Route the power cable through one of the two cable entries
located on the side or back panel into the control panel of the
appliance.
»Route the power cable through the strain relief.
»Connect the appliance to the power supply according to the
wiring diagram.
WARNING Risk to life through electrocution!
When permanently connected to the mains via an
appliance wall socket, ensure that the appliance can
be separated from the power supply with an isolator
that disconnects all poles with at least 3mm contact
separation. For this, you can use contactors, main
isolators or fuses.
The connection must be made via an RCD with a tripping
current of 30 mA.
!Risk of damage
Observe the type plate. The specified voltage must match
the mains voltage.
WARNING Risk to life if installed without an earth conductor.
Ensure that the appliance is earthed!

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INSTALLATION
APPLIANCE HANDOVER
10. Appliance handover
»Explain the appliance function to users and familiarise them
with its operation.
»Make users aware of potential dangers.
»Hand these instructions to the user.
11. Troubleshooting
If the appliance does not become warm after commissioning, the
flow rate may be too low. If this is the case, check whether the
return fitting is open.
!If you open the return fitting, please note that it does not
have a fixed end stop.
There is therefore a risk that the plug will come out,
which could cause water damage.
26�03�14�0049
1
1 Return fitting
12. Cleaning, maintenance and repair
!WARNING
Risk to life through electrocution!
Before any work on the appliance, disconnect all poles
from the power supply.
12.1 Cleaning the heat exchanger
To ensure that the full output of the appliance is maintained, the
heat exchanger must be cleaned if it becomes very dirty.
WARNING Injury
The heat exchanger has many sharp-edged fins. Wear
protective clothing, especially protective gloves, and be
careful when cleaning.
Use a soft brush. Never use acidic or alkaline cleaning agents.
12.2 Shutting off the throughput
If the heat exchanger needs to be replaced, you can shut off the
heating circuit throughput using the return fitting. Switch OFF the
power supply. At zero volts, the actuator valve closes the heating
flow.
26�03�14�0049
1
2
1 Return fitting
2 Motorised actuator valve

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INSTALLATION
SPECIFICATION
13. Specification
13.1 Dimensions and connections
600
168
520
57
28
78
28
78
a20
487
96
18
112
e04
e01
e02
e03
e02
e01
e03
e04
b01
i13
D0000017262
AUK 7 AUK 14 AUK 21 AUK 28 AUK 35
AAppliance Width mm 690 890 1090 1290 1490
1Electrical cable entry
2Heating flow Male thread G 1/2 G 1/2 G 1/2 G 1/2 G 1/2
3Heating return Male thread G 1/2 G 1/2 G 1/2 G 1/2 G 1/2
4 Heating flow, opt. Male thread G 1/2 G 1/2 G 1/2 G 1/2 G 1/2
5 Heating return, opt. Male thread G 1/2 G 1/2 G 1/2 G 1/2 G 1/2
6Wall mounting Horizontal hole spacing mm 400 600 800 1000 1200

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INSTALLATION
SPECIFICATION
13.2 Wiring diagram for AUK 7
NL
∆
∆
ϑ
ϑ
S4
F2
S1
F1
PE
K2
9 8 L N 5 4 3 2 1
M1
S3
X1
X2
4
2
1
4
2
2
1
1
R
C
1
1
26�07�31�0027
F1 Room temperature controller
F2 25°C controller
K2 Hydraulic servomotor
M1 fan motor
S1 ON/OFF switch
S3 stage selector
S4 Microswitch
X1 Terminal
X2 Terminal

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INSTALLATION
SPECIFICATION
13.3 Wiring diagram for AUK 14-35
NL
∆
∆
ϑ
ϑ
S4
F2
S1
F1
PE
K2
9 8 L N 5 4 3 2 1
Z4
Z2
Z3
Hi
Ha
M1
S3
X1
X2
Z1
4
5
3
2
1
1
R
C
1
1
26�07�31�0028
F1 Room temperature controller
F2 25°C controller
K2 Hydraulic servomotor
M1 fan motor
S1 ON/OFF switch
S3 stage selector
S4 Microswitch
X1 Terminal
X2 Terminal
Z1 Capacitor 1.0 µF
Z2 Capacitor 1.0 µF
Z3 Capacitor 1.0 µF
Z4 Capacitor 1.5 µF

36|AUK WWW.STIEBEL-ELTRON.COM
INSTALLATION
SPECIFICATION
13.4 Data table
AUK 7 AUK 14 AUK 21 AUK 28 AUK 35
227955 227956 227957 227958 227959
Outputs to EN 14511
Heating output, low kW 0,45 0,85 1,20 1,60 2,00
Heating output, medium kW 0,65 1,40 1,75 2,10 2,35
Heating output, high kW 0,65 1,65 2,00 2,30 2,90
Maximum output kW 0,80 1,85 2,10 2,80 3,50
Sound data
Sound pressure level low at a distance of 1 m dB(A) 36 34 34 34 34
Sound pressure level medium at a distance of 1 m dB(A) 45 40 37 38 37
Sound pressure level high at a distance of 1 m dB(A) 45 51 48 48 45
Max. sound pressure level at a distance of 1 m dB(A) 50 55 52 51 50
Application limits
Max. permissible pressure MPa 0,6 0,6 0,6 0,6 0,6
Hydraulic data
Flow capacity m³/h 1 1 1,6 2,5 2,5
Electrical details
Rated voltage V230 230 230 230 230
Phases 1/N/PE 1/N/PE 1/N/PE 1/N/PE 1/N/PE
Frequency Hz 50 50 50 50 50
Power consumption W32 48 48 50 50
Fuses A 10 10 10 10 10
Versions
IP-Rating IP20 IP20 IP20 IP20 IP20
Dimensions
Water capacity l0,45 0,8 1,44 2,59 4,66
Height mm 600 600 600 600 600
Width mm 690 890 1090 1290 1490
Depth mm 142 142 142 142 142
Weights
Weight kg 21 27 34 42 51
Connections
Heating connection G 1/2 G 1/2 G 1/2 G 1/2 G 1/2
Values
Air volume, low m³/h 70 150 190 190 220
Air volume, medium m³/h 100 180 230 260 300
Air volume, high m³/h 100 220 300 350 400
Air volume max. m³/h 120 240 320 380 440
Operating range min./max. °C 25-55 25-55 25-55 25-55 25-55
Pressure drop, heating kPa 3,5 18,28 6,65 14,01 25,17

ENGLISH
WWW.STIEBEL-ELTRON.COM AUK| 37
INSTALLATION
SPECIFICATION
13.5 Output data
Key to output output data
S1 Fan stage 1 (low))
S2 Fan stage 2 (medium)
S3 Fan stage 3 (high))
S4 Fan stage 4 (max.))
tv Heating flow temperature[°C]
tr Heating return temperature [°C]
tL1 Air inlet temperature [°C]
tL2 Air outlet temperature [°C]
Q Heating output [W]
13.5.1 AUK 7
S1 S1 S2 S2 S3 S3 S4 S4
tv / tr tL1 70 m³/h 70 m³/h 100 m³/h 100 m³/h 100 m³/h 100 m³/h 120 m³/h 120 m³/h
°C °C Q [W] tL2[°C] Q [W] tL2[°C] Q [W] tL2[°C] Q [W] tL2[°C]
55/50 15 888 52,9 1340 53,3 1340 53,3 1558 52,1
18 817 52,8 1232 53,2 1232 53,2 1433 52,1
20 770 52,8 1161 53,2 1161 53,2 1350 52,1
22 722 52,8 1090 53,1 1090 53,1 1267 52,2
24 675 52,8 1018 53,1 1018 53,1 1184 52,2
50/45 15 768 47,7 1159 48,1 1159 48,1 1347 47,1
18 697 47,7 1052 48,0 1052 48,0 1223 47,1
20 650 47,7 980 48,0 980 48,0 1140 47,1
22 603 47,7 909 48,0 909 48,0 1057 47,2
24 555 47,7 838 47,9 838 47,9 974 47,2
45/40 15 662 43,2 999 43,5 999 43,5 1161 42,6
18 590 43,1 890 43,4 890 43,4 1034 42,6
20 542 43,1 817 43,3 817 43,3 950 42,6
22 493 43,0 744 43,3 744 43,3 866 42,6
24 445 43,0 672 43,2 672 43,2 781 42,6
40/35 15 557 38,8 840 39,0 840 39,0 977 38,3
18 483 38,6 728 38,8 728 38,8 847 38,2
20 433 38,5 654 38,7 654 38,7 760 38,1
22 384 38,4 579 38,5 579 38,5 673 38,0
24 334 38,3 504 38,4 504 38,4 586 38,0
35/30 15 447 34,1 674 34,3 674 34,3 784 33,7
18 370 33,8 559 34,0 559 34,0 650 33,5
20 319 33,6 482 33,8 482 33,8 560 33,3
22 268 33,4 405 33,6 405 33,6 470 33,2
24 217 33,3 327 33,4 327 33,4 381 33,1

38|AUK WWW.STIEBEL-ELTRON.COM
INSTALLATION
SPECIFICATION
13.5.2 AUK 14
S1 S1 S2 S2 S3 S3 S4 S4
tv / tr tL1 150 m³/h 150 m³/h 180 m³/h 180 m³/h 220 m³/h 220 m³/h 240 m³/h 240 m³/h
°C °C Q [W] tL2[°C] Q [W] tL2[°C] Q [W] tL2[°C] Q [W] tL2[°C]
55/50 15 2009 53,3 2322 51,9 2887 52,5 3138 52,4
18 1848 53,2 2137 51,9 2656 52,5 2887 52,4
20 1741 53,2 2013 51,9 2502 52,5 2720 52,4
22 1634 53,1 1889 52,0 2348 52,5 2553 52,4
24 1527 53,1 1765 52,0 2194 52,5 2385 52,4
50/45 15 1740 48,1 2011 46,9 2501 47,5 2718 47,4
18 1579 48,1 1826 47,0 2270 47,5 2467 47,4
20 1472 48,0 1702 47,0 2116 47,5 2300 47,4
22 1365 48,0 1578 47,1 1962 47,5 2133 47,4
24 1258 48,0 1454 47,1 1808 47,5 1965 47,4
45/40 15 1502 43,6 1737 42,6 2159 43,0 2347 42,9
18 1338 43,5 1547 42,6 1923 43,0 2091 42,9
20 1229 43,4 1421 42,6 1766 42,9 1920 42,9
22 1120 43,3 1295 42,5 1609 42,9 1749 42,8
24 1010 43,2 1168 42,5 1452 42,9 1579 42,8
40/35 15 1259 39,0 1456 38,1 1810 38,5 1967 38,4
18 1091 38,8 1262 38,0 1568 38,4 1705 38,3
20 979 38,7 1132 38,0 1408 38,3 1530 38,2
22 867 38,5 1003 37,9 1247 38,2 1355 38,1
24 755 38,4 873 37,9 1086 38,1 1180 38,1
35/30 15 1012 34,3 1171 33,6 1455 33,9 1582 33,8
18 839 34,0 970 33,4 1455 35,8 1311 33,6
20 723 33,8 836 33,3 1455 35,8 1130 33,5
22 607 33,6 702 33,1 1455 35,8 949 33,3
24 492 33,4 569 33,0 1455 35,8 768 33,1
13.5.3 AUK 21
S1 S1 S2 S2 S3 S3 S4 S4
tv / tr tL1 190 m³/h 190 m³/h 230 m³/h 230 m³/h 300 m³/h 300 m³/h 320 m³/h 320 m³/h
°C °C Q [W] tL2[°C] Q [W] tL2[°C] Q [W] tL2[°C] Q [W] tL2[°C]
55/50 15 2492 52,5 3074 53,2 3822 51,4 4154 52,1
18 2293 52,5 2828 53,1 3516 51,5 3822 52,1
20 2160 52,5 2664 53,1 3312 51,5 3600 52,1
22 2027 52,5 2500 53,1 3108 51,6 3378 52,2
24 1894 52,5 2336 53,0 2904 51,7 3157 52,2
50/45 15 2156 47,4 2659 48,0 3305 46,5 3593 47,1
18 1957 47,4 2413 48,0 3000 46,6 3261 47,1
20 1824 47,4 2250 47,9 2797 46,6 3040 47,1
22 1691 47,4 2086 47,9 2593 46,7 2819 47,2
24 1559 47,4 1922 47,9 2390 46,8 2598 47,2
45/40 15 1863 43,0 2297 43,5 2856 42,2 3104 42,7
18 1659 43,0 2047 43,4 2545 42,2 2766 42,7
20 1524 42,9 1880 43,3 2337 42,3 2540 42,7
22 1389 42,9 1713 43,3 2129 42,3 2314 42,7
24 1253 42,8 1545 43,2 1921 42,3 2088 42,6
40/35 15 1566 38,5 1931 39,0 2401 37,9 2610 38,3
18 1357 38,4 1674 38,8 2081 37,8 2262 38,2
20 1218 38,3 1502 38,7 1868 37,8 2030 38,1
22 1079 38,2 1331 38,5 1654 37,8 1798 38,1
24 940 38,1 1159 38,4 1441 37,7 1566 38,0
35/30 15 1260 33,9 1554 34,3 1932 33,4 2100 33,8
18 1044 33,7 1288 34,0 1932 36,2 1740 33,5
20 900 33,5 1110 33,8 1932 36,2 1500 33,4
22 756 33,4 932 33,6 1932 36,2 1260 33,3
24 612 33,2 755 33,4 1932 36,2 1020 33,1

ENGLISH
WWW.STIEBEL-ELTRON.COM AUK| 39
INSTALLATION
SPECIFICATION
13.5.4 AUK 28
S1 S1 S2 S2 S3 S3 S4 S4
tv / tr tL1 190 m³/h 190 m³/h 260 m³/h 260 m³/h 350 m³/h 350 m³/h 380 m³/h 380 m³/h
°C °C Q [W] tL2[°C] Q [W] tL2[°C] Q [W] tL2[°C] Q [W] tL2[°C]
55/50 15 2519 52,9 3362 51,9 4543 52,1 4938 52,1
18 2317 52,8 3093 52,0 4180 52,1 4543 52,2
20 2183 52,8 2914 52,0 3938 52,1 4280 52,2
22 2048 52,8 2735 52,0 3695 52,2 4017 52,2
24 1914 52,8 2555 52,1 3453 52,2 3753 52,2
50/45 15 2182 47,8 2913 47,0 3936 47,1 4278 47,2
18 1980 47,8 2644 47,1 3573 47,2 3883 47,2
20 1846 47,8 2464 47,1 3330 47,2 3620 47,2
22 1712 47,7 2285 47,1 3088 47,2 3357 47,2
24 1578 47,7 2106 47,1 2846 47,2 3093 47,3
45/40 15 1882 43,3 2513 42,6 3396 42,7 3691 42,8
18 1677 43,2 2239 42,6 3025 42,7 3288 42,7
20 1540 43,2 2056 42,6 2778 42,7 3020 42,7
22 1403 43,1 1873 42,6 2531 42,7 2752 42,7
24 1266 43,0 1691 42,6 2284 42,6 2483 42,7
40/35 15 1574 38,7 2101 38,1 2839 38,2 3086 38,2
18 1364 38,5 1821 38,0 2460 38,1 2674 38,1
20 1224 38,4 1634 38,0 2208 38,0 2400 38,0
22 1084 38,3 1447 37,9 1956 38,0 2126 38,0
24 944 38,2 1260 37,9 1703 37,9 1851 37,9
35/30 15 1271 34,1 1697 33,6 2293 33,7 2492 33,7
18 1053 33,8 1406 33,4 1900 33,5 2065 33,5
20 908 33,7 1212 33,3 1638 33,4 1780 33,4
22 763 33,5 1018 33,2 1376 33,2 1495 33,2
24 617 33,3 824 33,1 1114 33,1 1210 33,1
13.5.5 AUK 35
S1 S1 S2 S2 S3 S3 S4 S4
tv / tr tL1 220 m³/h 220 m³/h 300 m³/h 300 m³/h 400 m³/h 400 m³/h 440 m³/h 440 m³/h
°C °C Q [W] tL2[°C] Q [W] tL2[°C] Q [W] tL2[°C] Q [W] tL2[°C]
55/50 15 2931 53,1 3912 52,3 5286 52,8 5746 52,3
18 2696 53,0 3599 52,3 4864 52,7 5286 52,3
20 2540 53,0 3390 52,3 4582 52,7 4980 52,3
22 2384 53,0 3182 52,3 4300 52,7 4674 52,3
24 2227 52,9 2973 52,3 4018 52,7 4367 52,4
50/45 15 2544 48,0 3395 47,3 4588 47,8 4987 47,4
18 2309 48,0 3082 47,4 4165 47,7 4527 47,4
20 2152 48,0 2873 47,4 3882 47,7 4220 47,4
22 1996 47,9 2664 47,4 3600 47,7 3913 47,4
24 1839 47,9 2455 47,4 3318 47,7 3606 47,4
45/40 15 2194 43,5 2929 42,9 3958 43,3 4302 42,9
18 1955 43,4 2609 42,9 3526 43,2 3833 42,9
20 1795 43,3 2396 42,8 3238 43,1 3520 42,9
22 1636 43,2 2183 42,8 2951 43,1 3207 42,8
24 1476 43,2 1970 42,8 2663 43,0 2894 42,8
40/35 15 1843 38,9 2460 38,4 3324 38,7 3613 38,5
18 1597 38,7 2132 38,3 2881 38,6 3131 38,3
20 1433 38,6 1913 38,2 2585 38,5 2810 38,2
22 1269 38,5 1694 38,1 2290 38,4 2489 38,2
24 1106 38,4 1476 38,1 1994 38,2 2168 38,1
35/30 15 1478 34,2 1973 33,8 2666 34,0 2898 33,8
18 1225 33,9 1635 33,6 2209 33,8 2401 33,6
20 1056 33,7 1409 33,4 1904 33,6 2070 33,4
22 887 33,5 1184 33,3 1600 33,4 1739 33,3
24 718 33,3 958 33,1 1295 33,2 1408 33,1

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WARRANTY | ENVIRONMENT AND RECYCLING
Guarantee
The warranty conditions of our German companies do not
apply to appliances acquired outside of Germany. In countries
where our subsidiaries sell our products, it is increasingly the
case that warranties can only be issued by those subsidiaries.
Such warranties are only granted if the subsidiary has issued
its own terms of warranty. No other warranty will be granted.
We shall not provide any warranty for appliances acquired in
countries where we have no subsidiary to sell our products.
This will not aect warranties issued by any importers.
Environment and recycling
We would ask you to help protect the environment. After use,
dispose of the various materials in accordance with national
regulations.
WARRANTY
ENVIRONMENT AND RECYCLING