STIEBEL ELTRON CNS 50 U Specification sheet

OPERATION AND INSTALLATION
Wall mounted convector
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CONTENTS | SPECIAL INFORMATION
SPECIAL INFORMATION
- Keep children under the age of3 away from
the appliance if constant supervision cannot be
guaranteed.
- Children from the age of 3 to 7 may switch the
appliance on and off, provided they are super-
vised or have been instructed in the safe oper-
ation of the appliance and understand any risks
that may result. This is subject to the appliance
having been installed as described. Children from
the age of 3 to 7 must not plug the power cable
into its socket nor regulate the appliance.
- The appliance may be used by children aged8
and older and persons with reduced physical,
sensory or mental capabilities or a lack of expe-
rience and know-how, provided that they are su-
pervised 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. Chil-
dren must never clean the appliance or perform
user maintenance unless they are supervised.
- Parts of the appliance can get very hot and may
cause burns. Particular caution is advised when
children or vulnerable persons are present.
- Never cover the appliance.
- Never install the appliance directly below a wall
socket.
- Install the appliance in such a way that the con-
trol equipment cannot be touched by a person in
the bath or shower.
- The connection to the power supply must be in
the form of a permanent connection. Ensure the
appliance can be separated from the power sup-
ply by an isolator that disconnects all poles with
at least 3mm contact separation.
- The power cable may only be replaced (for exam-
ple if damaged) by a qualified contractor author-
ised by the manufacturer, using an original spare
part.
- Secure the appliance as described in chapter "In-
stallation/ Installation".
SPECIAL INFORMATION
OPERATION
1. General information �����������������������������������������3
1.1 Safety instructions����������������������������������������������� 3
1.2 Other symbols in this documentation ����������������������� 3
1.3 Information on the appliance ��������������������������������� 3
1.4 Units of measurement ������������������������������������������ 3
2. Safety����������������������������������������������������������3
2.1 Intended use������������������������������������������������������ 3
2.2 General safety instructions ������������������������������������ 4
2.3 Test symbols ������������������������������������������������������ 4
3. Appliance description ���������������������������������������4
4. Operation �����������������������������������������������������4
4.1 CNS U��������������������������������������������������������������� 4
4.2 CNS UT ������������������������������������������������������������� 5
4.3 CNS UE ������������������������������������������������������������� 5
4.4 Limiting the temperature selector
(CNS U | CNS UE)������������������������������������������������� 6
5. Cleaning, care and maintenance ���������������������������6
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 Minimum clearances�������������������������������������������� 7
9.2 Installing the wall mounting bracket ������������������������ 7
9.3 Appliance installation������������������������������������������� 8
9.4 Removing the appliance���������������������������������������� 8
9.5 Power supply ����������������������������������������������������� 8
10. Troubleshooting ����������������������������������������������8
11. Appliance handover������������������������������������������8
12. Specification ��������������������������������������������������9
12.1 Dimensions and connections ���������������������������������� 9
12.2 Data table ��������������������������������������������������������� 9
GUARANTEE
ENVIRONMENT AND RECYCLING
OPERATION AND INSTALLATION
Wandkonvektor

OPERATION
General information
ENGLISH
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OPERATION
1. General information
The chapters "Special Information" and "Operation" are intended
for both the user and qualified contractors.
The chapter "Installation" is intended for qualified contractors.
Note
Read these instructions carefully before using the appli-
ance and retain them for future reference.
Pass on the instructions to any new user if required.
1.1 Safety instructions
1.1.1 Structure of safety instructions
!
KEYWORD Type of risk
Here, possible consequences are listed that may result
from failure to observe the safety instructions.
 Steps to prevent the risk are listed.
1.1.2 Symbols, type of risk
Symbol Type of risk
Injury
Electrocution
Burns
(burns, scalding)
1.1.3 Keywords
KEYWORD Meaning
DANGER Failure to observe this information will result in serious
injury or death.
WARNING Failure to observe this information may result in serious
injury or death.
CAUTION Failure to observe this information may result in non-seri-
ous or minor injury.
1.2 Other symbols in this documentation
Note
General information is identified by the adjacent symbol.
 Read these texts carefully.
Symbol Meaning
Material losses
(Appliance and consequential losses, environmental pol-
lution)
Appliance disposal
 This symbol indicates that you have to do something. The ac-
tion you need to take is described step by step.
1.3 Information on the appliance
Symbol Meaning
Never cover the appliance
1.4 Units of measurement
Note
All measurements are given in mm unless stated oth-
erwise.
2. Safety
2.1 Intended use
This appliance is designed to heat living areas.
This appliance is intended for domestic use. It can be used safely
by untrained persons. The appliance can also be used in a non-do-
mestic environment, e.g.in a small business, as long as it is used
in the same way.
Any other use beyond that described shall be deemed inappropri-
ate. Observation of these instructions and of instructions for any
accessories used is also part of the correct use of this appliance.
!
!

OPERATION
Appliance description
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2.2 General safety instructions
Operate the appliance only when fully installed and with all safety
equipment fitted.
!
WARNING Injury
-Keep children under the age of3 away from the
appliance if constant supervision cannot be guar-
anteed.
-Children from the age of 3 to 7 may switch the ap-
pliance on and off, provided they are supervised
or have been instructed in the safe operation of
the appliance and understand any risks that may
result. This is subject to the appliance having been
installed as described. Children from the age of 3 to
7 must not plug the power cable into its socket nor
regulate the appliance.
-The appliance may be used by children aged8 and
older 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 appli-
ance safely and have understood the resulting risks.
-Children must never play with the appliance. Chil-
dren must never clean the appliance or perform
user maintenance unless they are supervised.
WARNING Burns
Never operate this appliance...
-in rooms where the appliance is at risk of fire or
explosion as a result of chemicals, dust, gases or
vapours.
-in the direct proximity of pipes or receptacles that
carry or contain flammable or explosive materials.
-if work such as laying cables, grinding or sealing is
carried out in the installation room.
-if sprays, floor polish or similar products containing
napsan are used. Ventilate the room sufficiently
before heating.
-if the minimum clearances to adjacent object sur-
faces are not maintained, for example to furniture,
net curtains, curtains, textiles or other flammable
materials.
-if an appliance component is damaged, the appli-
ance has fallen over or already had a fault.
WARNING Burns
Never place any flammable, combustible or insulating
objects or materials, such as laundry, blankets, maga-
zines, containers with floor polish or napsan, spray cans
or similar on the appliance or in direct proximity to it.
WARNING Burns
Parts of the appliance can get very hot and may cause
burns. Particular caution is advised when children or
vulnerable persons are present.
CAUTION Overheating Never cover the appliance.
!
Material losses
Never step on the appliance.
2.3 Test symbols
See type plate on the right on the exterior of the appliance.
3. Appliance description
The appliance is a wall mounted electric direct heater.
The appliance is suitable as a full heating system in bathrooms,
for example, or for use between seasons and as a booster heater
in smaller rooms, such as hobby and guest rooms.
The air in the appliance is heated by a heating element and ex-
pelled via natural convection through the air outlet grille at the
top. Cool room air flows in through the apertures at the bottom
of the appliance.
After mounting the appliance on the wall and making the electri-
cal connection using a permanent power supply via an appliance
socket, the appliance is ready for operation.
4. Operation
4.1 CNS U
26�07�31�0037
1
2
1 Temperature selector
2 ON/OFF switch
4.1.1 Switching the appliance on and off
 Switch the appliance on and off via the ON/OFF switch on the
right hand side of the appliance.
4.1.2 Temperature selector
 Set the required room temperature via the continuously
variable temperature selector (for setting range see chapter
“Specification/ Data table”).
As soon as the selected room temperature is reached, it is con-
stantly maintained at this selected temperature through periodic
heating. The output of the appliance must correspond at least to
the required heat demand of the room.
If several appliances are installed in a single room, the setting
at the temperature selector on each appliance can be different.
Note
To avoid excessive power consumption when windows
are open, switch the appliance off while airing.

OPERATION
Operation
ENGLISH
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4.1.3 Frost protection
 Turn the temperature selector as far to the right as possible.
In this position, the temperature controller switches on the heating
element automatically if the room temperature drops below the
frost protection temperature.
4.2 CNS UT
12
13
14
26�07�31�0236�
1
3
4
2
1 Time switch
2 Temperature selector
3 ON/OFF switch
4 Arrow marking the time
4.2.1 Temperature selector
 Set the required room temperature via the continuously
variable temperature selector (for setting range see chapter
“Specification/ Data table”).
4.2.2 Operating modes
Heating with the time switch
 The appliance heats in accordance with the time switch set-
tings until the room temperature set with the temperature
selector is reached. Frost protection is only enabled during
the selected time.
 Set the time by turning the time switch clockwise until the
black arrow points to the current time.
 Push the tabs on the edge of the time switch outwards ac-
cording to the times when the appliance should heat. Every
tab corresponds to an ON or OFF period of 20minutes.
- Heating ON: Push the tabs outwards.
- Heating OFF: Push the tabs inwards.
Appliance off "0"
 To switch the appliance off, move the ON/OFF switch to "0".
In this operating mode, frost protection is also disabled.
Constant operation "I"
 Move the ON/OFF switch to "I".
The appliance heats with no time limit until the room tempera-
ture set with the temperature selector is reached. As soon as the
selected room temperature is reached, it is constantly maintained
at this selected temperature through periodic heating. The output
of the appliance must correspond at least to the required heat
demand of the room.
Frost protection is always enabled.
If several appliances are installed in a single room, the setting
at the temperature selector on each appliance can be different.
Note
To avoid excessive power consumption when windows
are open, switch the appliance off while airing.
4.3 CNS UE
26�07�31�0174
3
1
2
1 ON/OFF switch
2 Temperature selector
3 Operating mode switch
4.3.1 Switching the appliance on and off
 Switch the appliance on and off via the ON/OFF switch on the
right hand side of the appliance.
4.3.2 Temperature selector
 Set the required room temperature via the continuously
variable temperature selector (for setting range see chapter
“Specification/ Data table”).

OPERATION
Cleaning, care and maintenance
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4.3.3 Operating modes
Comfort mode
As soon as the selected room temperature is reached, it is con-
stantly maintained at this selected temperature through periodic
heating. The output of the appliance must correspond at least to
the required heat demand of the room.
If several appliances are installed in a single room, the setting
at the temperature selector on each appliance can be different.
Note
To avoid excessive power consumption when windows
are open, switch the appliance off while airing.
ECO mode (night setback)
On this setting the comfort temperature set at the temperature
selector is automatically reduced by 3 °C.
Frost protection
In this position, the temperature controller switches heating on
automatically if the room temperature drops below the frost pro-
tection temperature.
Automatic
If the appliance is connected to an optional control device, you
can use this to operate it. Depending on the setting of the control
device, the appliance heats at certain times of the day in comfort,
ECO or frost protection mode.
If the appliance is not connected to a control device, the appliance
heats in comfort mode.
4.4 Limiting the temperature selector
(CNS U | CNS UE)
Using the two pins fitted to the back of the control casing, you
can fix the temperature selector at a certain setting or limit the
temperature setting range.
 Break out the pins.
1
1
2
26�07�31�0038
1 Pin
2 Temperature selector
 To fix the selected temperature, push a pin into the hole op-
posite .
26�07�31�0171
1
1
2
1 Pin
2 Temperature selector
 To limit the temperature setting range, set the minimum and
maximum values at the temperature selector, and push a pin
for each into the slightly offset hole opposite.
5. Cleaning, care and maintenance
CAUTION Burns
-Never spray cleaning spray into the air slot.
-Ensure that no moisture can enter the appliance.
 If a pale brownish discolouration appears on the appliance
casing, wipe it off with a damp cloth.
 Clean the appliance when cold with ordinary cleaning prod-
ucts. Avoid abrasive or corrosive cleaning products.
Note
As part of regular maintenance, we recommend also
having the control components checked. The safety and
control components should be checked by a contractor
no more than ten years after commissioning.
6. What to do if...
... the appliance does not heat up:
 Check the temperature set at the appliance and the MCB/fuse
in your fuse box.
The appliance has a safety temperature controller that shuts the
appliance down if it overheats. After the cause has been removed
(for example air outlet or inlet apertures covered) and the appli-
ance has cooled down for a few minutes, operation starts again.
If you cannot remedy the fault, notify your qualified contractor.
To facilitate and speed up your enquiry, please provide the serial
number from the type plate (000000-0000-000000).

INSTALLATION
Safety
ENGLISH
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INSTALLATION
7. Safety
Only a qualified contractor should carry out installation, commis-
sioning, maintenance and repair of the appliance.
7.1 General safety instructions
We guarantee trouble-free function and operational reliability only
if original accessories and spare parts intended for the appliance
are used.
WARNING Electrocution
Install the appliance in such a way that control equipment
cannot be touched by a person in the bath or shower.
CAUTION Burns
-Only fit the wall mounted appliance to a vertical
wall that is temperature-resistant to at least 85 °C.
-Maintain the minimum clearances to adjacent object
surfaces.
!
Material losses
- Never install the appliance directly below a wall
socket.
- Ensure that the power cable is not in contact with
any appliance components.
7.2 Instructions, standards and regulations
Note
Observe all applicable national and regional regulations
and instructions.
8. Appliance description
8.1 Standard delivery
The following are delivered with the appliance:
- Wall mounting bracket (hooked into the appliance)
9. Installation
9.1 Minimum clearances
≥20
≥100 ≥500≥100
≥100 ≥150
D0000019283
9.2 Installing the wall mounting bracket
Note
You can also use the wall mounting bracket as a tem-
plate for wall mounting; this ensures the required floor
clearance.
aaa
26�07�31�0124
1
3
2
4
 Unhook the wall mounting bracket.
 Place the centred wall mounting bracket level on the ground
and mark holes 1 and 2.
 Lift up the wall mounting bracket so that its lower holes
match up with the markings you have just made on the in-
stallation wall.
 Mark holes 3 and 4 on the installation wall.
 Drill holes at all four markings.
 Secure the wall mounting bracket with suitable materials
(screws, rawl plugs) depending on the type of wall. With the
vertical slots, you can compensate for an offset fixing hole.

INSTALLATION
Troubleshooting
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9.3 Appliance installation
 Hook the appliance by its slots in the back of the appliance on
to all four tabs of the wall mounting bracket simultaneously.
 Push the appliance to latch it in position.
26�07�31�0035
1
2
1 Locking bolt
2 Wall mounting bracket
 Turn the locking bolt in the wall mounting bracket fully clock-
wise; this locks the appliance in place.
26�07�31�0127
12
3
1 Appliance
2 Safety cap
3 Locking bolt
 Push the safety cap onto the locking bolt to prevent it from
loosening.
9.4 Removing the appliance
26�07�31�0128
12
3
1 Appliance
2 Safety cap
3 Locking bolt
 Remove the safety cap from the locking bolt.
 Undo the locking bolt on the wall mounting bracket.
 Lift the appliance up slightly and pull it forwards and away
from the wall mounting bracket.
9.5 Power supply
 Ensure the on-site supply cable has an adequate
cross-section.
 When connecting the appliance via a standard socket, ensure
that the socket is easily accessible once the appliance has
been installed.
WARNING Electrocution
-Carry out all electrical connection and installation
work in accordance with relevant regulations.
-Ensure the appliance can be separated from the
power supply by an isolator that disconnects all
poles with at least 3mm contact separation.
-Do not install the appliance with a fixed power
cable.
-Never install the appliance directly below a wall
socket.
Note
Observe the type plate. The specified voltage must match
the mains voltage.
9.5.1 CNS-UE
 With a permanent connection, connect the three-core cable
to a junction box as follows.
1
2
1
2
3 3
26�07�31�0175
1 Neutral = blue
2 Live = brown
3 Control cable = black
10. Troubleshooting
The power cable must only be replaced by a qualified contractor
using original spare parts supplied by us.
11. Appliance handover
Explain the functions of the appliance to the user. Draw special
attention to the safety instructions. Hand over the operating and
installation instructions to the user.

INSTALLATION
Specication
ENGLISH
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12. Specification
12.1 Dimensions and connections
b01
a20
i13
D0000019277
CNS 50
U/UT
CNS 75
U/UT/UE
CNS 100
U/UT/UE
CNS 125 UT CNS 150
U/UT/UE
CNS 200
U/UT/UE
CNS 250
U/UT
CNS 300
U/UT/UE
a20 Appliance Width mm 370 445 445 590 590 740 890 1040
b01 Electrical cable entry
i13 Wall mounting
bracket
Hole spacing mm 121 195 195 343 343 491 639 787
12.2 Data table
CNS 50-300U
CNS 50 U CNS 75 U CNS 100 U CNS 150 U CNS 200 U CNS 250 U CNS 300 U
236276 236277 236278 236279 236280 236281 236282
Electrical data
Connected load kW 0.5 0.75 1.0 1.5 2.0 2.5 3.0
Power supply 1/N ~ 240 V 50 Hz 1/N ~ 240 V 50 Hz 1/N ~ 240 V 50 Hz 1/N ~ 240 V 50 Hz 1/N ~ 240 V 50 Hz 1/N ~ 240 V 50 Hz 1/N ~ 240 V 50 Hz
Dimensions
Height mm 450 450 450 450 450 450 450
Width mm 370 445 445 590 740 890 1040
Depth mm 100 100 100 100 100 100 100
Weights
Weight kg 3.3 4 4 5.2 6.3 7.7 8.9
Versions
IP rating IP24 IP24 IP24 IP24 IP24 IP24 IP24
Protection class II II II II II II II
Colour Alpine white Alpine white Alpine white Alpine white Alpine white Alpine white Alpine white

INSTALLATION
Specication
10 | CNS U | CNS UT | UE www.stiebel-eltron.com
CNS 50-300 UT
CNS 50 UT CNS 75 UT CNS 100 UT CNS 125 UT CNS 150 UT CNS 200 UT CNS 250 UT CNS 300 UT
231547 231548 231549 231550 231551 231552 231553 231574
Electrical data
Connected load kW 0.5 0.75 1.0 1.25 1.5 2.0 2.5 3.0
Power supply 1/N ~ 240 V
50 Hz
1/N ~ 240 V
50 Hz
1/N ~ 240 V
50 Hz
1/N ~ 240 V
50 Hz
1/N ~ 240 V
50 Hz
1/N ~ 240 V
50 Hz
1/N ~ 240 V
50 Hz
1/N ~ 240 V
50 Hz
Dimensions
Height mm 450 450 450 450 450 450 450 450
Width mm 370 445 445 590 590 740 890 1040
Depth mm 100 100 100 100 100 100 100 100
Weights
Weight kg 3.3 4 4 5.2 5.2 6.3 7.7 8.9
Versions
Version 24 h time switch 24 h time switch 24 h time switch 24 h time switch 24 h time switch 24 h time switch 24 h time switch 24 h time switch
IP rating IP24 IP24 IP24 IP24 IP24 IP24 IP24 IP24
Protection class II II II II II II II II
Colour Alpine white Alpine white Alpine white Alpine white Alpine white Alpine white Alpine white Alpine white
CNS 75-300 UE
CNS 75 UE CNS 100 UE CNS 150 UE CNS 200 UE CNS 300 UE
239296 236297 239298 236299 236300
Electrical data
Connected load kW 0.75 1.0 1.5 2.0 2.8
Power supply 1/N ~ 240 V 1/N ~ 240 V 1/N ~ 240 V 1/N ~ 240 V 1/N ~ 240 V
Dimensions
Height mm 450 450 450 450 450
Width mm 445 445 590 740 1040
Depth mm 100 100 100 100 100
Weights
Weight kg 4 4 5.2 6.3 8.9
Versions
IP rating IP24 IP24 IP24 IP24 IP24
Protection class II II II II II
Colour Alpine white Alpine white Alpine white Alpine white Alpine white