STIEBEL ELTRON CNS 50 Trend Wall Mounted Electric Panel Heater Instruction Manual

OPERATION AND INSTALLATION

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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 experience and know- ow, 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  ever 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 advised when children or vulnerable persons are present.
• In order to avoid  verheating, 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 disconnects all poles with at least 3 mm contact separation.

OPERATION

General information

• The power cable must only be replaced (for example if damaged) by a qualified contractor authorised by the manufacturer, using an  original spare part.
• Secure the appliance as described in chapter “Installation / Installation”.

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 appliance and retain them for future reference.  Pass on the instructions to a new user if required.

Safety instructions

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.

Symbols, type of risk

Keywords

death.
WARNING| Failure to observe this information may result in serious injury or death.
CAUTION| Failure to observe this information may result in non-serious or minor injury.

Other symbols in this documentation

Note
General information is identified by the adjacent symbol.
Read these texts carefully.

(appliance damage, consequential losses and environmental pollution)
| Appliance disposal

This symbol indicates that you have to do something. The action you need to take is described step by step.

Information on the appliance

Units of measurement

Note
All measurements are given in mm unless stated otherwise.

Safety

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-domestic 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 inappropriate. Observation of these instructions  and of the instructions for any accessories used is also part of the  correct use of this appliance.

General safety instructions

**WARNING Injury**

• 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 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 potential risks.
• Children must never play with the appliance. Children 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 flammable 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. Ventilate 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 appliance has fallen over or there is a fault.

WARNING Burns

• Never place any flammable, combustible or insulating 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 floor standing appliance. Only ever operate this appliance when mounted 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 appliance.
• Never stand on the appliance.
• Never operate the appliance in the open air.

Test symbols

See type plate on the appliance.

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.

Operation

1. Programming unit
2. ON/OFF switch

Programming unit

The programming unit is located at the top right of the appliance.

1. Display
2. User interface

User interface

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

Display
If no user action occurs for 20 seconds, the backlight switches off. Press any button to switch the background lighting on again.

Symbols

Indication of the current time or a programmed start time
Timer mode:
The appliance heats in accordance with the enabled time program.
| 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 temperature 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 adjusted 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”).
| 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” symbol flashes. After venting, frost protection mode can be terminated manually by pressing “+”. The appliance then heats to the set room temperature again. Conditions: Window open detection is enabled (see chapter “Settings / Standard menu”).
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| 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 “–”.
| External input (FP):
CNS Trend U series appliances can be connected to an external control unit. Depending on the setting of the control unit, the appliance heats in comfort, setback or frost protection mode at specific times of the day.
| Days of the week:
1 = Monday, 2 = Tuesday … 7 = Sunday

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 interruption 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.

Standby mode

Material losses
In standby mode, the appliance will not switch on heating under any circumstances. There will be no frost protection.

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 “- – – -“.

Settings

Standard display

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.

Standard menu

To access the standard menu, briefly press “Menu”. You can now call up the following menu items:

The comfort temperature must be set at least 0.5 °C higher than the setback temperature.
| Select setback temperature
| Switch “Window open detection” function on and off
| Select time program (Pro1, Pro2, Pro3, off) or external input (FP)
| 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.

Configuration menu

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.

Actual values
The following actual values can be called up:

Note
The counter for relative heating time (I2) counts in complete hours how long the appliance heats for. When the appliance is switched off, any heating phase of less than 60 minutes is not recorded.

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 requirements.

• 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.

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 operates 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 required 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 comfort 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 parameter P4.

• Please note that activating parameter P4 resets all time programs (Pro1, Pro2, Pro3) to the factory setting.

Parameters
You can call up the following parameters:

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 difference between displayed actual temperature I1 and the room temperature you measure yourself. To
compensate for this difference, a room temperature offset of  ±3 °C can be set via parameter P1. Example: Theappliance  indicatesI1 = 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).

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 products. 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.

Troubleshooting

Room does not get warm enough. Appliance
does not get  hot.| Temperature set too low on the appliance.| Check the selected room temperature. Adjust if necessary.
No power supply.| Check position of the ON/OFF switch, RCD and fuse/MCB in your fuse box.
Room does not get warm enough although
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 appliance 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 necessary.
Detected room temperature does not match actual
room temperature.| Avoid obstructions to air change between appliance and indoor air.
Window open detection does not respond.| Appliance does not detect a pronounced temperature drop due to venting. (Window open
detection requires previously stable 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.
Window open detectionis not enabled.| Manually switch the appliance into standby mode for  the duration of venting.
Switch on window open detection in the  tandard menu.
“Adaptive start” function does not work as required.| This function is only effective in timer mode.| Use the timer mode for optimised heating
convenience.
Severely fluctuating room temperature or the appliance learning procedure  has not been completed.| Wait a few days for behaviour to stabilise.
“Adaptive start” function is not enabled.| Switch on the “Adaptive start” function in the standard menu.
Appliance is in “FP” program but does not
respond to external input.| When the appliance does not detect a signal at the
external input, it heats in comfort mode.| Check external control unit and its settings. Wiring must be installed correctly and with correct polarity.
“Err” or “E…” is displayed.| Internal fault detected.| Notify the qualified contractor.

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

Safety

Only a qualified contractor should carry out installation, commissioning, maintenance and repair of the appliance.

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 objects.

Material losses

• Never install the appliance directly below a wall socket.
• Ensure that the power cable is not in contact with any appliance components.

Instructions, standards and regulations

Note
Observe all applicable national and regional regulations and instructions.

Appliance description

Standard delivery

The following are delivered with the appliance:

• Wall mounting bracket (hooked into the appliance)

Installation

Installation site

Installation in bathrooms
WARNING Electrocution
When installing the appliance in rooms with a bath and/ or shower, the appliance may only be connected to a standard socket outside safety zones 0, 1 and 2. The socket must be at least 600 mm away from a bath or shower. If in doubt, consult a qualified contractor.

Electrical safety zones in the bathroom

Minimum clearances

Installing the wall mounting bracket

The appliance is intended for wall mounting using the wall mouning bracket supplied. The appliance may only be installed horzontally.

Note

• The wall mounting bracket can be used as a template for wall mounting. This ensures sufficient clearance from the floor.

• Use a spirit level if the floor is uneven or sloping.

• 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 installation 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 materials (screws, rawl plugs). With the vertical slots, you can compensate for an offset fixing hole.

Appliance installation

1 Wall mounting bracket

• Hook the appliance onto the bottom tabs of the wall mounting 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.

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.

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.

Electrical connection

WARNING Electrocution
Carry out all electrical connection and installation work in accordance with national and regional regulations.

WARNING Electrocution

• In the case of a permanent connection, the appliance must be able to be separated from the power supply by an isolatorthat 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.

Note
In a non-domestic environment and in case of particularly high demands on the appliance, such as permanent continuous operation, we recommend installing the appliance as a permanent connection with a junction box.

Only an authorised electrician is allowed to make the permanent connection to a junction box.

WARNING Electrocution

• Provide appropriate strain relief when making the connection to a junction box.
• Ensure that the appliance is connected to the earth conductor.
• Seal the trimmed cable ends again correctly with wire ferrules.

CNS Trend series
The appliance is delivered fully wired. The following electrical connections are permissible:

| CNS 50-300 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.

CNS Trend U series
The appliance is delivered with a power cable without a plug.
When wiring the appliance in permanently, connect the 4-core cable to a connection socket as illustrated:

1. Neutral conductor = blue
2. Live = brown
3. Earth conductor = green/yellow
4. Control cable = black

There are 3 possible ways to connect the appliance:

• Appliance connection without control cable
  Unregulated appliance. The control cable is not connected. In this case, insulate the control cable.

• Temperature setback via control cable
  To reduce the temperature to the set setback temperature, the black control cable is activated via an external electronic contact (e.g. a time switch).

• Control cable connected to external control unit
  The appliance can be connected to any control unit that issues the following waveforms as control signals.

Instruction| Oscilloscope| Operating mode| Heating temperature
---|---|---|---
No electrical
power| | Comfort mode| Subject to set comfort
temperature
Complete oscillation 230 V| | Setback mode| Subject to set setback
temperature
Semi-oscillation negative -115 V| | Frost protection| Frost protection temperature
Semi-oscillationpositive +115 V| | Stop| None
Full oscillation 230 V for 3 seconds| | Comfort mode -1 °C| 1 °C less than the set
comfort temperature
Full oscillation 230 V for 7 seconds| | Comfort mode -2 °C| 2 °C less than the set
comfort temperature

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.

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.

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.

Specification

Dimensions and connections

Energy consumption data

The product data complies with EU regulations relating to the Directive on the ecodesign of energy related products (ErP).
Product information on electric individual room heaters to regulation (EU) 2015/1188

Data table

Guarantee
The guarantee conditions of our German companies do not apply to appliances acquired outside of Germany. In countries where our subsidiaries sell our products a guarantee can only be issued by those subsidiaries. Such guarantee is only granted if the subsidiary has issued its own terms of guarantee. No other guarantee willbe  granted.
We shall not provide any guarantee for appliances acquired in countries where we have no subsidiary to sell our products.  This will not affect arranties 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.

United Kingdom and Ireland
STIEBEL ELTRON UK Ltd.
Unit 12 Stadium Court
Stadium Road | CH62 3RP Bromborough
Tel. 0151 346-2300 | Fax 0151 334-2913
[email protected]
www.stiebel-eltron.co.uk

United States of America
STIEBEL ELTRON, Inc.
17 West Street | 01088 West Hatfield MA
Tel. 0413 247-3380 | Fax 0413 247-3369
[email protected]
www.stiebel-eltron-usa.com

Subject to errors and technical changes!

A 272253-43177-9647

Documents / Resources

| STIEBEL ELTRON CNS 50 Trend Wall Mounted Electric Panel Heater [pdf] Instruction Manual
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