STIEBEL ELTRON CNS 100 TREND Instruction Manual

OPERATION AND INSTALLATION
Wall mounted convector heater
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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
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 or 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 ex-
perience and know-how, provided that they
are supervised or they have been instructed
on how to use the appliance safely and have
understood the potential risks.
- Children must never play with the appliance.
Children 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 ad-
vised when children or vulnerable persons are
present.
- In order to avoid overheating, do not cover
the heater.
- Never install the appliance directly below a
wall socket.
- In the case of a permanent connection, the
appliance must be able to be separated from
the power supply by an isolator that discon-
nects all poles with at least 3mm contact
separation.
SPECIAL INFORMATION
OPERATION
1. General information ��������������������������������������� 16
1.1 Safety instructions���������������������������������������������� 16
1.2 Other symbols in this documentation ���������������������� 16
1.3 Information on the appliance �������������������������������� 16
1.4 Units of measurement ����������������������������������������� 16
2. Safety�������������������������������������������������������� 16
2.1 Intended use����������������������������������������������������� 16
2.2 General safety instructions ����������������������������������� 17
2.3 Test symbols ����������������������������������������������������� 17
3. Appliance description ������������������������������������� 17
4. Operation ��������������������������������������������������� 17
4.1 Programming unit ���������������������������������������������� 18
4.2 Switching the appliance on and off ������������������������� 18
4.3 Standby mode ��������������������������������������������������� 18
5. Settings ����������������������������������������������������� 19
5.1 Standard display ������������������������������������������������ 19
5.2 Standard menu�������������������������������������������������� 19
5.3 Configuration menu�������������������������������������������� 19
6. Cleaning, care and maintenance ������������������������� 20
7. Troubleshooting �������������������������������������������� 21
INSTALLATION
8. Safety�������������������������������������������������������� 21
8.1 General safety instructions ����������������������������������� 21
8.2 Instructions, standards and regulations ������������������� 21
9. Appliance description ������������������������������������� 21
9.1 Standard delivery����������������������������������������������� 21
10. Installation�������������������������������������������������� 21
10.1 Minimum clearances ������������������������������������������� 21
10.2 Installing the wall mounting bracket ����������������������� 22
10.3 Appliance installation������������������������������������������ 22
10.4 Removing the appliance��������������������������������������� 22
10.5 Electrical connection������������������������������������������� 23
11. Commissioning ��������������������������������������������� 23
12. Troubleshooting �������������������������������������������� 23
13. Appliance handover���������������������������������������� 23
14. Specification ������������������������������������������������ 24
14.1 Dimensions and connections��������������������������������� 24
14.2 Energy consumption data������������������������������������� 24
14.3 Data table �������������������������������������������������������� 25
GUARANTEE
ENVIRONMENT AND RECYCLING

OPERATION
General information
ENGLISH
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- The power cable must only be replaced (for
example if damaged) by a qualified contrac-
tor authorised by the manufacturer, using an
original spare part.
- Secure the appliance as described in chapter
"Installation/ Installation".
OPERATION
1. General information
The chapters "Special information" and "Operation" are intended
for both users 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 a 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 damage, consequential losses and environmen-
tal pollution)
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.
The 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 inappro-
priate. Observation of these instructions and of the 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
!
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 or
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 potential risks.
-Children must never play with the appliance. Chil-
dren must never clean the appliance or perform
user maintenance unless they are supervised.
!
WARNING Injury
In closed rooms, temperatures can rapidly reach high
values. Ensure constant supervision if the appliance is
operated in a small room and the persons within that
room cannot regulate the appliance or leave the room
on their own.
WARNING Burns
Never operate this appliance...
-if the distance from adjacent objects or other flam-
mable materials would be less than the minimum
permissible distance.
-in rooms where it is at risk of fire or explosion as a
result of chemicals, dust, gases or vapours. Venti-
late the room sufficiently before heating.
-in the direct proximity of pipes or receptacles that
carry or contain flammable or explosive materials.
-if an appliance component is damaged, the appli-
ance has fallen over or there is a fault.
WARNING Burns
-Never place any flammable, combustible or insulat-
ing objects or materials on the appliance or in direct
proximity to it.
-Ensure that the air intake and discharge are never
blocked.
-Never place any objects between the appliance and
the wall.
WARNING Burns
The appliance is unsuitable for use as a floorstanding
appliance. Only ever operate this appliance when mount-
ed on the wall mounting bracket supplied (see chapter
"Installation/ Installation").
CAUTION Burns
Parts of the appliance can get very hot and may cause
burns. Particular caution is advised when children or
vulnerable persons are present.
WARNING Overheating
In order to avoid overheating, do not cover the heater.
!
Material losses
- Ensure that the power cable is not touching the ap-
pliance.
- Never stand on the appliance.
- Never operate the appliance in the open air.
2.3 Test symbols
See type plate on the appliance.
3. Appliance description
The appliance is a wall mounted electric direct heater.
The appliance is suitable for use as a standalone heating system,
or can be used in spring and autumn and as a booster heater in
smaller rooms.
The air inside the appliance is heated by a heating element and
expelled via natural convection through the air discharge at the
top. Cool indoor air is drawn in through the air intake on the
underside of the appliance.
When the set room temperature is reached, it is maintained by
periodic heating.
4. Operation
D0000068097
1
2
1 Programming unit
2 ON/OFF switch

OPERATION
Operation
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4.1 Programming unit
The programming unit is located at the top right of the appliance.
D0000069706
2
1
1 Display
2 User interface
4.1.1 User interface
Button Designation Description
"Standby" key Switch on the programming unit;
Put programming unit and heating appliance
into standby mode
"OK" button Selection;
Confirm settings
"Menu" key Call up and exit menu
"+" key Call up menu items;
Change settings
"–" key Call up menu items;
Change settings
4.1.2 Display
If no user action occurs for 20seconds, the backlight switches
off. Press any button to switch the background lighting on again.
Symbols
Symbol Description
Time display:
Indication of the current time or a programmed start time
Timer mode:
The appliance heats in accordance with the enabled time pro-
gram.
Comfort mode:
The appliance maintains the set comfort temperature.
Standard setting: 21.0°C. Use this setting for comfortable room
temperatures when someone is present.
Setback mode:
The appliance maintains the set setback temperature.
Standard setting: 18.0°C. Use this setting e.g. at night or when
absent for several hours.
Frost protection:
The frost protection symbol is displayed if the set room tempera-
ture is set to 7.0°C.
Use this setting to protect an unused room from frost damage.
Adaptive start:
In timer mode, the heating appliance switching times are adjust-
ed to ensure that, at the programmed start time, the respective
set room temperature is already reached.
Conditions: The "adaptive start" function is enabled (see chapter
"Settings/ Standard menu").
Symbol Description
Window open detection:
To avoid unnecessary energy consumption while venting, the
appliance automatically switches to frost protection mode for one
hour when a window is open. The "window open detection" sym-
bol flashes. After venting, frost protection mode can be terminat-
ed manually by pressing "+", "–" or "OK". The appliance then heats
to the set room temperature again.
Conditions: Window open detection is enabled (see chapter "Set-
tings/ Standard menu").
User interface lock:
To lock or unlock the user interface, press and hold "+" and "–"
simultaneously for 5seconds.
Heating enabled:
The appliance is heating to maintain the set room temperature.
Room temperature display
Editable parameter:
The parameter shown can be changed using "+" and "–".
Days of the week:
1=Monday, 2=Tuesday … 7=Sunday
4.2 Switching the appliance on and off
Note
For a short time after initial start-up and after longer
breaks in use, a smell may develop.
The appliance is ready for operation as soon as it has been fixed
to the wall and plugged into the mains.
 Switch the appliance on or off using the ON/OFF switch on
the right-hand side of the appliance.
 Switch the appliance off when not in use for longer periods
(e.g. during the summer months).
All settings remain intact after switching off or after an interrup-
tion to the power supply. This appliance is equipped with a power
reserve that ensures the day of the week and the time are saved
for several hours.
Note
If the appliance was in timer mode before being switched
off for a longer period of time, you will be prompted to set
the day and time after switching it on. Until this setting
is made, the appliance will operate in comfort mode.
4.3 Standby mode
!
Material losses
In standby mode, the appliance will not switch on heating
under any circumstances. There will be no frost protec-
tion.
 To switch on the programming unit, press "Standby". The
standard display appears.
 To put the programming unit and the heating appliance into
standby mode, press "Standby". The display shows "----".

OPERATION
Settings
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5. Settings
5.1 Standard display
D0000072134
The default display is continuously displayed. If no user action
is performed for longer than 20seconds while in the menu, the
appliance automatically switches to the default display.
The default display shows the current set room temperature as
well as the "Editable parameter" symbol. You can use "+" and "–"
to change the set room temperature.
If the set room temperature corresponds to one of the values
set for the comfort or setback temperature, the symbol for the
corresponding operating mode (comfort mode, setback mode)
appears in the menu bar.
The set room temperature can also be changed manually when
in timer mode. The changed set room temperature is maintained
until the next programmed switching point is reached.
5.2 Standard menu
To access the standard menu, briefly press "Menu". You can now
call up the following menu items:
Display Description
Select day of the week and time
Select comfort temperature
The comfort temperature must be set at least 0.5°C higher
than the setback temperature.
Select setback temperature
The setback temperature must be set at least 0.5°C lower
than the comfort temperature.
Switch "Window open detection" function on and off
Select time program (Pro1, Pro2, Pro3) or deactivate (off)
Switch "Adaptive start" function on and off
To change the setting of a menu item, call it up by pressing "+"
and "–". Press the "OK" button.
As soon as the "Editable parameter" symbol appears, you can
change the setting of the menu item with "+" and "–". Press "OK"
to save the setting.
To exit the standard menu, briefly press "Menu". The standard
display appears.
5.3 Configuration menu
Display Description
I1-I2 Actual values
Pro1-Pro3 Time programs
P1-P5 Parameters
In the configuration menu, you can call up actual values, program
time programs for timer mode and set parameters.
To access the configuration menu, press and hold "Menu". After
approx.3seconds, actual valueI1 is displayed.
Use "+" and "–" to switch between the individual actual values,
time programs and parameters.
To exit the configuration menu, briefly press "Menu". The standard
display appears.
5.3.1 Actual values
The following actual values can be called up:
Display Description Unit
I1 Actual room temperature [°C] | [°F]
I2 Relative heating time
(The counter can be reset via parameter P5.)
[h]
Note
The counter for relative heating time(I2) counts in com-
plete hours how long the appliance heats for. When the
appliance is switched off, any heating phase of less than
60minutes is not recorded.
5.3.2 Time programs
There are three time programs available for using the appliance
in timer mode. Time programs Pro1 and Pro2 are factory-set.
Time program Pro3 can be set according to your individual re-
quirements.
Display Description
Pro1 Time program "Daily"
- Repeated: Monday to Sunday
Pro2 Time program "Weekdays"
- Repeated: Monday to Friday
Pro3 Time program "User defined"
- up to 14comfort phases, freely configurable
Note
To use timer mode, select the required time program
in the standard menu (see chapter "Settings/ Standard
menu").
Note
Ensure the day of the week and the time are set correctly
when setting the time programs.

OPERATION
Settings
ENGLISH
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Note
The following applies to all time programs (Pro1, Pro2,
Pro3):
If the end time is later than 23:59h, the end time will
automatically be moved to the next day of the week. The
comfort phase is maintained past midnight and will end
on the next day at the set end time.
Time programs Pro1 and Pro2
You can specify the comfort mode start and end times with time
programsPro1 and Pro2. During this time period, the appliance
heats to the set comfort temperature. Outside this specified time
period, the appliance operates in setback mode. This results in
a comfort and a setback phase that are repeated daily(Pro1) or
every weekday(Pro2).
Theses phases are factory-set as follows:
- 08:00 h - 22:00 h: Comfort mode
- 22:00 h - 08:00 h: Setback mode
Note
When time programPro2 is enabled, the appliance op-
erates exclusively in setback mode during the weekend.
To adapt time programsPro1 and Pro2 according to your needs,
proceed as follows:
 In the configuration menu, use "+" and "–" to call up the re-
quired time program.
 Press the "OK" button.
The start time for comfort mode is displayed.
 Use "+" and "–" to set the required start time.
 Press the "OK" button.
The end time for comfort mode is displayed.
 Use "+" and "–" to set the required end time.
 Press "OK" to save.
Time program Pro3
You can use time programPro3 to specify up to 14 separate com-
fort phases which are repeated weekly.
To configure a comfort phase in time programPro3:
 In the configuration menu, use "+" and "–" to call up time
programPro3.
 Press the "OK" button.
The display shows "3---".
 Press the "OK" button.
A day of the week or a group of days is displayed.
 Use "+" and "–" to select the required day or group of days.
 Press the "OK" button.
The start time for comfort mode is displayed.
 Use "+" and "–" to set the required start time.
 Press the "OK" button.
The end time for comfort mode is displayed.
 Use "+" and "–" to set the required end time.
 Press the "OK" button.
Comfort phase "3-01" has been configured.
 To configure a further comfort phase, use "+" and "–" in time
programPro3 to select display"3---". Proceed as describe
above.
Note
To reset the selected comfort phases, activate parame-
terP4.
 Please note that activating parameterP4 resets all
time programs (Pro1, Pro2, Pro3) to the factory set-
ting.
5.3.3 Parameters
You can call up the following parameters:
Display Description Options
P1 Room temperature offset ±3°C | ±5°F
P2 Time format 12h | 24h
P3 Temperature display units °C | °F
P4 Reset time programs (timer mode). on | off
P5 Reset relative heating time on | off
To change the value of a parameter, use "+" and "–" to call up the
relevant parameter. Press the "OK" button.
As soon as the "Editable parameter" symbol appears, you can
change the parameter value with "+" and "–". Press "OK" to save
the selected value.
P1: Room temperature offset
Uneven temperature distribution in the room can result in a differ-
ence between displayed actual temperatureI1 and the room tem-
perature you measure yourself. To compensate for this difference,
a room temperature offset of ±3°C can be set via parameterP1.
Example: The appliance indicates I1=21.0°C. You have measured
a room temperature of 20.0°C. There is a difference of 1.0°C.
 To compensate for the difference, select an offset of P1=-1.0.
P2: Time format
ParameterP2 is used to specify whether to display the time in
12hour or 24 hour format.
P3: Temperature display units
ParameterP3 is used to specify whether the room temperature is
displayed in degrees Centigrade [°C] or in degrees Fahrenheit [°F].
P4: Reset time programs
Activating parameterP4 resets all time programs to the factory
setting.
P5: Reset relative heating time
Activating parameterP5 resets the counter for relative heating
time (I2).

8| CNS Trend www.stiebel-eltron.com
OPERATION | INSTALLATION
Cleaning, care and maintenance
6. Cleaning, care and maintenance
The appliance contains no user serviceable parts.
Material losses
- 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
We recommend having the control components checked
as part of regular maintenance.
 Have a qualified contractor check the safety and
control components no more than 10years after
commissioning.
7. Troubleshooting
Problem Cause Remedy
Room does not get
warm enough. Ap-
pliance does not get
hot.
Temperature set too low
on the appliance.
Check the selected room
temperature. Adjust if nec-
essary.
No power supply. Check position of the ON/OFF
switch, RCD and fuse/MCB in
your fuse box.
Room does not get
warm enough al-
though the appliance
is hot.
Overheating. High limit
safety cut-out limits
heating output.
Eliminate the cause (dirt or
obstructions at the air inlet
or outlet). Observe minimum
clearances.
The heat demand of the
room is higher than ap-
pliance output.
Remove heat losses (Close
windows and doors. Avoid
constant venting.)
Room gets too hot.
Temperature set too high
on the appliance.
Check the selected room
temperature. Adjust if nec-
essary.
Detected room tempera-
ture does not match actu-
al room temperature.
Avoid obstructions to air
change between appliance
and indoor air.
Window open de-
tection does not
respond.
Appliance does not detect
a pronounced tempera-
ture drop due to venting.
(Window open detection
requires previously sta-
ble room temperature.)
Wait a while after making
settings on the appliance,
until the room temperature
has fully stabilised.
Avoid obstructions to air
change between appliance
and indoor air.
Manually switch the appli-
ance into standby mode for
the duration of venting.
Window open detection
is not enabled.
Switch on window open
detection in the standard
menu.
"Adaptive start" func-
tion does not work as
required.
This function is only ef-
fective in timer mode.
Use the timer mode for opti-
mised heating convenience.
Severely fluctuating room
temperature or the appli-
ance learning procedure
has not been completed.
Wait a few days for behav-
iour to stabilise.
“Adaptive start” function
is not enabled.
Switch on the "Adaptive
start" function in the stand-
ard menu.
Problem Cause Remedy
"Err" or "E..." is dis-
played.
Internal fault detected. Notify the qualified con-
tractor.
If you cannot remedy the fault, contact your qualified contractor.
To facilitate and speed up your request, provide the number from
the type plate (000000-0000-000000).
INSTALLATION
8. Safety
Only a qualified contractor should carry out installation, commis-
sioning, maintenance and repair of the appliance.
8.1 General safety instructions
We guarantee trouble-free function and operational reliability only
if original accessories and spare parts intended for the appliance
are used.
CAUTION Burns
-Only mount the appliance on a vertical wall that is
temperature-resistant to at least 85°C.
-Maintain the minimum clearances to adjacent ob-
jects.
!
Material losses
- Never install the appliance directly below a wall
socket.
- Ensure that the power cable is not in contact with
any appliance components.
8.2 Instructions, standards and regulations
Note
Observe all applicable national and regional regulations
and instructions.
9. Appliance description
9.1 Standard delivery
The following are delivered with the appliance:
- Wall mounting bracket (hooked into the appliance)

INSTALLATION
Installation
ENGLISH
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10. Installation
10.1 Minimum clearances
≥150≥100
≥100 ≥100 ≥500
≥20
D0000068096
10.2 Installing the wall mounting bracket
The appliance is intended for wall mounting using the wall mount-
ing bracket supplied. The appliance may only be installed hori-
zontally.
Note
- The wall mounting bracket can be used as a tem-
plate for wall mounting. This ensures sufficient
clearance from the floor.
- Use a spirit level if the floor is uneven or sloping.
aaa
D0000072159
1
3
2
4
≥224 ≥224
D0000072312
 Unhook the wall mounting bracket from the appliance.
 Place the centred wall mounting bracket horizontally on the
floor. 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 the holes at the 4markings.
 Secure the wall mounting bracket with suitable fixing ma-
terials (screws, rawl plugs). With the vertical slots, you can
compensate for an offset fixing hole.
10.3 Appliance installation
D0000072157
1
1 Wall mounting bracket
 Hook the appliance onto the bottom tabs of the wall mount-
ing bracket by the slots in the back of the appliance.
 Place the appliance in an upright position.
 Secure the appliance by pushing it towards the wall until it
audibly snaps into place in the two upper springs on the wall
mounting bracket.
D0000072158
12
1 Appliance
2 Locking screw
 Secure the appliance against unintentional release using
the supplied locking screw on the left-hand side of the wall
mounting bracket.

INSTALLATION
Commissioning
10 | CNS Trend www.stiebel-eltron.com
10.4 Removing the appliance
 Undo and remove the locking screw from the wall mounting
bracket.
 To release the appliance, push down the springs at the top of
the wall mounting bracket.
 Tilt the appliance away from the wall and lift it off the bottom
tabs on the wall mounting bracket.
10.5 Electrical connection
WARNING Electrocution
-Carry out all electrical connection and installation
work in accordance with relevant regulations.
-In the case of a permanent connection, the appli-
ance must be able to 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.
Note
- Observe the type plate. The specified voltage must
match the mains voltage.
- Ensure the on-site supply cable has an adequate
cross-section.
The appliance is delivered fully wired. The following electrical
connections are permissible:
CNS 100-200 Trend
Connection to a freely accessible standard socket
with matching plug
X
Permanent connection to an appliance junction box
with earth conductor
X
- If connecting the appliance via a socket, ensure that this is
easily accessible once the appliance has been installed.
- If connecting the appliance permanently, trim the power
cable so that it leads directly to the appliance connection
socket. Ensure that, after trimming the power cable, the
appliance can still be removed from the wall without a
problem.
11. Commissioning
The appliance is ready for operation as soon as it has been fixed
to the installation wall and plugged into the mains.
 Remove the protective film from the programming unit.
12. Troubleshooting
The power cable must only be replaced (for example if damaged)
by a qualified contractor authorised by the manufacturer, using
an original spare part.
13. 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.