STIEBEL ELTRON CNS 75-2 E, CNS 150-1 E, CNS 200-2 E, CNS 150-2 E, CNS 240-2 E Operation And Installation

OPERATION AND INSTALLATION
GUÍA DE OPERACIÓN E INSTALACIÓN
MODE D’EMPLOI ET MANUEL D’INSTALLATION

WALL MOUNTED CONVECTION HEATER
CONVECTOR DE PARED
APPAREIL DE CHAUFFAGE À CONVECTION MURAL

» CNS 50-2 E
» CNS 75-2 E
» CNS 100-1 E
» CNS 100-2 E
» CNS 150-1 E
» CNS 150-2 E
» CNS 200-2 E
» CNS 240-2 E

» CNS 150-2 24H
» CNS 200-2 24H
» CNS 240 -2 24H

STIEBEL ELTRON, Inc.

17 West Street | West Hatfield, MA 01088
Tel. [phone] | Fax [phone]
Email info

@

stiebel-eltron-usa.com

www.stiebel-eltron-usa.com

2 |CNS E / CNS 24H WWW.STIEBEL-ELTRON-USA.COM

CONTENTS | OPERATION

IMPORTANT INSTRUCTIONS

OPE RA TION

1. IMPORTANT INSTRUCTIONS

SAVE THESE INSTRUCTIONS

When using electrical appliances, basic precautions should always
be followed to reduce the risk of fire, electric shock, and injury to
persons, including the following:

1. Read all instructions before installing or using this heater.

2. This heater is hot when in use. To avoid burns, do not let bare
skin touch hot surfaces. Keep combustible materials, such as
furniture, pillows, bedding, papers, clothes, etc. and curtains at
least 3 feet (1 m) from the front of the heater and keep them at
least 3 feet (1 m) away from the sides and rear.

3. Extreme caution is necessary when any heater is used by or
near children or invalids and whenever the heater is left operating
and unattended.

4. Do not operate any heater after it malfunctions. Disconnect
power at service panel and have heater inspected by a reputable
electrician before reusing.

1.1 Document information

The chapter Operation is intended for users and heating
contractors.

The chapter Installation is intended for heating contractors.

Read these instructions carefully before using the
appliance and retain them for future reference. Pass
on the instructions to any new users.

1.2 Key to symbols

1.2.1 Layout of safety information

Safety information comprises a warning symbol, a keyword and
a text giving information. Safety information is printed on a grey
background.
Example:

DANGER: Electrocution
Install the appliance in such a way that control
equipment...

12 3

4

1 Symbol (see chapter on warning symbols/symbols)
2 Keyword (see chapter on keywords)
3 Description (see chapter on warning symbols/symbols)
4 Information text

OPERATION

1. Important Instructions _________________________________________2

1.1 Document information ____________________________________________ 2

1.2 Key to symbols ______________________________________________________ 2

2. Safety ____________________________________________________________3

2.1 Intended use _________________________________________________________ 3

2.2 Safety information _________________________________________________ 3

2.3 ETL / UL designation _______________________________________________ 4

2.4 Type label ____________________________________________________________ 4

3. Register your product __________________________________________4

4. Appliance description __________________________________________4

5. CNS E Operation ________________________________________________4

5.1 Description of the user interface ________________________________ 4

5.2 Frost protection _____________________________________________________ 4

5.3 Limiting the temperature controller ____________________________ 5

5.4 Shutting down ______________________________________________________ 5

6. CNS 24H Operation _____________________________________________5

6.1 Operating modes ___________________________________________________ 5

6.2 Timer switch _________________________________________________________ 5

6.3 Temperature selector ______________________________________________ 6

6.4 Frost protection _____________________________________________________ 6

6.5 Limiting the temperature controller ____________________________ 6

6.6 Shutting down ______________________________________________________ 6

7. Cleaning, care and maintenance ______________________________6

8. What to do if ... _________________________________________________6

INSTALLATION

9. Safety ____________________________________________________________7

9.1 General safety instructions _______________________________________ 7

9.2 Instructions, standards and regulations _______________________ 7

10. Appliance description __________________________________________7

10.1 Standard delivery ___________________________________________________ 7

11. Installation ______________________________________________________7

11.1 Installing the wall mounting bracket ___________________________ 7

11.2 Appliance installation _____________________________________________ 7

11.3 Dismounting the appliance _______________________________________ 8

11.4 Power supply ________________________________________________________ 8

11.5 Terminal block ______________________________________________________ 8

12. Troubleshooting_________________________________________________8

13. Appliance handover ____________________________________________8

14. Specifications ___________________________________________________9

14.1 Dimensions __________________________________________________________ 9

14.2 Minimum clearances to hard surfaces _________________________ 9

14.3 Specifications _______________________________________________________ 10

14.4 Wiring Diagram ____________________________________________________11

15. Warranty _______________________________________________________ 12

OPERATION

SAFETY

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1.2.2 Keywords

KEYWORD Description

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.

1.2.3 Warning symbols/symbols

Warning symbol

Description

Injury

Electrocution

Burns or scalding

!

Other situations

Fire

Never cover the appliance

Appliance disposal

1.2.4 Text symbols and layout in this documentation

Read the text next to this symbol carefully.

» The "»" symbol indicates that you should do something. The

action you need to take is described step by step.

— Passages with the "

–" symbol show you lists of items.

1.2.5 Information on the appliance

Never cover the appliance

1.2.6 Units of measurement

The dimensions in this document are given in in
/ mm. Any alternative units of measurements are
specified accordingly.

2. Safety

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 Safety information

Operate the appliance only when fully installed and with all safety
equipment fitted.

The heater must be properly installed before it is used.

DANGER: Electrocution
Before cleaning, make sure the power has been
turned off at the circuit breaker panel and that the
heating element of the heater is cool.

WARNING: Fire
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. Vent the room
sufficiently before heating.
...if the minimum clearances to adjacent object
surfaces are not maintained, for example to
furniture, net curtains, curtains, textiles or other
flammable materials (see 14.2, “Minimum clearances
to hard surfaces”, pg. 9).
...if an appliance component is damaged, the
appliance has fallen over or already had a fault.

WARNING: Injury
Where children or persons with limited physical,
sensory or mental capabilities are allowed to control
this appliance, ensure that this will only happen
under supervision or after appropriate instructions
by a person responsible for their safety.
Children must be supervised to ensure that they
never play with the appliance.

WARNING: Fire
Never place any flammable, combustible or
insulating objects or materials, such as laundry,
blankets, magazines, containers with floor polish or
napsan, spray cans or similar on the appliance or in
direct proximity to it.

WARNING Burns
The surfaces of the appliance casing and the
expelled air become hot during operation (more than
176 °F / 80 °C).

CAUTION: Overheating
Never cover the appliance

Never step on the appliance.

OPERATION

REGISTER YOUR PRODUCT

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2.3 ETL / UL designation

The ETL / UL designation shows that the appliance meets all
essential requirements according to UL standard 499.

2.4 Type label

The type label is located on the right on the exterior of the
appliance.

3. Register your product

You must register this product within 90 days of
purchase on our web site in order to activate the
standard warranty or to be eligible for the extended
warranty. Go to our web site at
www.stiebel-eltron-usa.com and click on register
your product.

Before beginning the registration process, we suggest that you
gather the necessary information which will be as follows:

Type, Example: CNS 50-2 E (from the white label that is on the
right side of the unit)

Number listed after “Nr.”
Place of Purchase
Purchase Date
First & Last Name
Email address
Physical Address
Phone Number

IF YOU HAVE ANY QUESTIONS CONCERNING THE REGISTRA­TION PROCESS OR WARRANTY OPTIONS, PLEASE CONTACT
STIEBEL ELTRON USA DIRECTLY AT (800)-582-8423.

4. Appliance description

The appliance is an electric direct heater only for installation on
a wall.

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
expelled 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
electrical connection to the main breaker, the appliance is ready
for operation.

5. CNS E Operation

The CNS E is a convection operated space heater with a thermostat
and an on/off switch.

5.1 Description of the user interface

» Switch the appliance ON via the switch on the right hand side

of the appliance.

» Set the required room temperature via the continuously variable

temperature selector (for temperatures see specification
chapter).

26_07_31_0037

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).

If several appliances are installed in a single room, the setting
at the temperature selector on each appliance can be different.

To avoid excessive power consumption when windows are open,
you should stop the appliance while venting.

5.2 Frost protection

To disable normal heating but maintain protection against
freezing, 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 (47 °F / 7 °C).

OPERATION

CNS 24H OPERATION

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5.3 Limiting the temperature controller

Using the two pins fitted to the back of the control casing, you
can fix the temperature controller at a certain setting or limit the
temperature setting range.

» Break out the pins.
» To prevent adjustment of the selected temperature, push a pin

into the hole opposite (see diagram).

1

1

2

26_07_31_0038

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 (see diagram).

26_07_31_0171

1

1

2

1 Pin
2 Temperature selector

5.4 Shutting down

» Move the switch on the right of the appliance to OFF.

6. CNS 24H Operation

The CNS 24H is a convection space heater with a 24-hour timer,
thermostat and an on/off switch.

To switch the appliance off, move the ON/OFF switch
to

6.1 Operating modes

12

13

14

2

1

3

3

2

1 Timer switch
2 ON/OFF switch
3 Arrow marking the time

Heating with the time switch

» To set the appliance into the timer mode, move the ON/OFF

switch to the

symbol. The appliance turns on in accordance

to the timer settings (see 6.2, “Timer switch”, pg. 5).

Appliance off

» Move the ON/OFF switch to to turn the appliance off. In this

mode, frost protection is disabled.

Constant operation

» Move the ON/OFF switch to to keep the appliance in continuous

operation. The appliance will operate until the set temperature
is reached. Frost protection is enabled in this mode.

6.2 Timer switch

In the timer and constant operation modes, the appliance heats
to the set temperature on the temperature selector.

When in timer mode, the appliance will only activate during the
desired time, in addition to the set temperature.

» Set the time by turning the timer switch clockwise until the black

arrow points to the current time.

» Push the tabs on the edge of the time switch outwards for the

time that 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.

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INSTALLATION

CLEANING, CARE AND MAINTENANCE

6.3 Temperature selector

» Set the required room temperature via the continuously variable

temperature selector (for temperatures see specification
chapter).

26_07_31_0037

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).

If several appliances are installed in a single room, the setting
at the temperature selector on each appliance can be different.

To avoid excessive power consumption when windows are open,
you should stop the appliance during this period.

6.4 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 (47 °F / 7 °C).

6.5 Limiting the temperature controller

Using the two pins fitted to the back of the control casing, you
can fix the temperature controller at a certain setting or limit the
temperature setting range.

» Break out the pins.
» To prevent adjustment of the selected temperature, push a pin

into the hole opposite (see diagram).

1

1

2

26_07_31_0038

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 (see diagram).

26_07_31_0171

1

1

2

1 Pin
2 Temperature selector

6.6 Shutting down

» Move the switch on the right of the appliance to .

7. Cleaning, care and maintenance

!

WARNING:
Before cleaning, make sure the power has been
turned off at the circuit breaker panel and that the
heating element of the heater is cool. Failure to do
so could result in serious burns, electrocution,
serious bodily injury, or death.

If a pale brownish discolouration appears on the appliance casing,
wipe this off as soon as possible with a damp cloth. Clean the
appliance when cold with ordinary cleaning products. Avoid
abrasive or corrosive cleaning products.

CAUTION: Fire
Never spray cleaning spray into the air slot. Ensure
that no moisture can enter the appliance.

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.

8. What to do if ...

... the appliance does not heat up:
Check the temperature set at the appliance and the circuit breaker

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 appliance has cooled down for a few minutes, operation starts
again.

If you cannot remedy the fault, contact your contractor. To facilitate
and speed up your enquiry, please provide the number on the type
plate (000000-0000-000000).

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INSTALLATION

SAFETY

INSTALLATION

9. Safety

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

9.1 General safety instructions

We guarantee trouble-free function and operational reliability
only if the original accessories and spare parts intended for the
appliance are used.

DANGER: Electrocution
If you mount the appliance on the wall, do so in such
a way that control equipment cannot be touched by
a person in the bath or shower.

!

CAUTION:

-Only fit the wall mounted appliance to a vertical
wall that is temperature-resistant to at least 185 °F
/ 85 °C.

-Observe the minimum clearances to adjacent object
surfaces (for minimum clearances see specification
chapter).

-Never install the appliance directly below a wall
socket.

-Ensure that the power cable is not in contact with
any appliance components.

9.2 Instructions, standards and regulations

Observe all applicable national and regional
regulations and instructions.

Observe the Building and Garage Regulations [or
local regulations].

10. Appliance description

10.1 Standard delivery

» Wall mounting bracket (hooked into the appliance)

11. Installation

11.1 Installing the wall mounting bracket

You can use the wall mounting bracket as a template for wall
mounting; this ensures the required floor clearance.

» 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 installation
wall.

» Mark holes 3 and 4 on the installation wall.

aaa

26_07_31_0124

1

3

2

4

» 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.

11.2 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.
» Turn the locking bolt in the wall mounting bracket fully clockwise;

this locks the appliance in place.

» Push the safety cap onto the locking bolt to prevent it from

loosening.

26_07_31_0035

1

2

1 Locking bolt
2 Wall mounting bracket

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INSTALLATION

TROUBLE S HOOTING

26_07_31_0127

1

2

3

1 Appliance
2 Safety cap
3 Locking bolt

11.3 Dismounting the appliance

» Remove the safety cap from the locking bolt.

26_07_31_0128

1

2

3

1 Appliance
2 Safety cap
3 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.

11.4 Power supply

» Ensure the on-site supply cable has an adequate cross-section.
» Ensure a socket or junction box for a permanent power supply

is installed at a distance of at least 4˝ / 10 cm from the side of
the appliance.

11.5 Terminal block

We recommend using stranded wire to connect to the terminal
block. Crimp a ferrule over stranded bare wire to ensure a good
connection.

Consult the chart below for the recommended torque amounts on
the terminal block screws.

Screw Diameter (mm) Torque (N•cm) Torque (lbf•in)

2.8 30-40 2.65-3.54

2.8-3 35-50 3.09-4.42
3-3.2 50-60 4.42-5.31

3.2-3.6 60-80 5.31-7.08

3.6-4.1 90-120 7.96-10.62

4.1-4.7 120-180 10.62-15.93

4.7-5.3 150-200 13.27-17.7

Using the proper torque specifications to secure wire to the wiring
block helps to avoid personal loss or property damage.

See 14, “Specifications”, pg. 9 for information on the proper
wire gauge size.

DANGER: Electrocution
Carry out all electrical connection and installation
work in accordance with all national, state and local
building code.

DANGER: Electrocution
Each heater must be wired directly to the circuit
breaker panel with the proper size breaker and wire
gauge.

DANGER: Electrocution
Do not plug the heater into a wall outlet.

The specified voltage on the nameplate must match
the voltage at the circuit breaker panel.

12. Troubleshooting

The power cable must only be replaced by a contractor using our
original spare parts.

If you cannot remedy the fault, notify the contractor who
installed the appliance. To facilitate and speed up your
enquiry, please provide the serial number from the type plate
(000000-0000-000000).

13. Appliance handover

Explain the functions of the appliance to the user. Draw special
attention to the safety information. Hand the operating and
installation instructions to the user.

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INSTALLATION

SPECIFICATIONS

14. Specifications

14.1 Dimensions

B01

A20

PLQLPXPÝ

(2 cm)

Ý (10 cm)

17.75Ý

(45 cm)

Ý

(16.3 cm)

Ý

(26.1 cm)

I13

D0000019277

CNS 50-2 E / CNS 75-2 E / CNS 100-1,-2 E / CNS 150-1,-2 E /

CNS 150-2 24H

CNS 200-2 E /
CNS 200-2 24H

CNS 240-2 E /
CNS 240-2 24H

A20 Appliance Width 14.5˝ / 37 cm 17.5˝ / 44.5 cm 17.5˝ / 445 cm 23.25 / 590 29.1 / 740 35.0 / 890
B01 Electrical cable entry
i13 Wall mounting bracket Hole spacing 4.75˝ / 121 cm 7.7˝ / 195 cm 7.7˝ / 195 cm 13.5˝ / 343 cm 19.3˝ / 491 cm 25.2˝ / 639 cm

14.2 Minimum clearances to hard surfaces

minimum. 10Ý

(25 cm)

minimum. 4Ý

(10 cm)

minimum. 4Ý

(10 cm)

minimum. 4Ý

(10 cm)

minimum. 20Ý

(50 cm)

minimum. 1Ý

(2 cm)

FLOOR

ANY HARD SURFACE

FLOOR

D0000019283_min

» The image above shows minimum allowed clearances between the installed appliance and any hard surfaces.

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INSTALLATION

SPECIFICATIONS

14.3 Specifications

CNS E

Model CNS 50-2 E CNS 75-2 E CNS 100-1 E CNS 100-2 E CNS 150-1 E CNS 150-2 E CNS 200-2 E CNS 240-2 E

Item No. 231542 232068 233586 231543 233587 231544 231545 231546

Voltage 240 V 208 V 240 V 208 V 120 240 V 208 V 120 240 V 208 V 240 V 208 V 240 V 208 V
Wattage 0.5 kW 0.38 kW 0.75 kW 0.56 kW 1.0 kW 1.0 kW 0.75 kW 1.5 kW 1.5 kW 1.13 kW 2.0 kW 1.5 kW 2.4 kW 1.8 kW
Amperage 2.1 A 1.8 A 3.1 A 2.7 A 8.3 A 4.2 A 3.6 A 12.5 A 6.3 A 5.4 A 8.3 A 7.2 A 10.0 A 8.7 A
Required circuit breaker 15 A
Required wire size 14 AWG
Temperature range 43-86 °F/ 6-30 °C
Frost protection setting 47 °F/ 7 °C
IP-Rating IP24
Protection class I
Color alpine white
Height 17.75˝ / 45 cm
Width 14.5˝ / 37 cm 17.5˝ / 44.5 cm 17.5˝ / 44.5 cm 17.5˝ / 44.5 cm 23.25˝ / 59 cm 23.25˝ / 59 cm 29.1˝ / 74 cm 35.0˝ / 89 cm
Depth 4.0˝ / 10 cm
Weight 8.4 lb/ 3.8 kg 9.7 lb/ 4.4 kg 9.7 lb/ 4.4 kg 9.7 lb/ 4.4 kg 12.6 lb/ 5.7 kg 12.6 lb/ 5.7 kg 15.0 lb/ 6.8 kg 17.9 lb/ 8.1 kg

CNS 24H

Model

CNS 150-2 24H CNS 200-2 24H CNS 240-2 24H

Item No. 272063 272061 272060

Voltage 240 V 208 V 240 V 208 V 240 V 208 V
Wattage 1.5 kW 1.13 kW 2.0 kW 1.5 kW 2.4 kW 1.8 kW
Amperage 6.3 A 5.4 A 8.3 A 7.2 A 10.0 A 8.7 A
Required circuit breaker 15 A
Required wire size 14 AWG
Temperature range 43-86 °F/ 6-30 °C
Frost protection setting 47 °F/ 7 °C
IP-Rating IP24
Protection class I
Color alpine white
Height 17.75˝ / 45 cm
Width 23.25˝ / 59 cm 29.1˝ / 74 cm 35.0˝ / 89 cm
Depth 4.0˝ / 100 mm
Weight 12.6 lb/ 5.7 kg 15.0 lb/ 6.8 kg 17.9 lb/ 8.1 kg

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INSTALLATION

SPECIFICATIONS

14.4 Wiring Diagram

14.4.1 CNS E Wiring Diagram

R1

N1

X1

220-240 V

120 V

F1

F2

L1 L2

L1 N

Label Description

F1 Thermal cut-out
F2 Thermostat
N1 On/off switch
R1 Heating element
X1 Terminal Block

14.4.2 CNS 24H Wiring Diagram

F2

R1

T1

1

2

3

4

5

F1

L1 L2

X1220-240 V

N1

Label Description

F1 Thermal cut-out
F2 Thermostat
N1 On/off switch
R1 Heating element
T1 24-hour timer
X1 Terminal Block