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I N S T R U C T I O N S

© 2010 OJ Electronics A/S

1

67074A  10/10 - (MBC)

Typ OCC4/OCD4

English

The thermostat is an electronic on/off thermo-
stat for temperature control by means of an 
NTC sensor located either externally or inter-
nally within the thermostat.
The thermostat is for flush mounting in a wall 
socket. A baseplate for external wall mounting 
is available.

PRODUCT PROGRAMME

OCC4-1991   Clock-thermostat incl. floor sensor.
OCC4-1999   Clock-thermostat with built-in 

room sensor.

OCD4-1999   Clock-thermostat with 2 sensors. 

Floor sensor and built-in room 
sensor.

WARNING

 – Important Safety Instructions. 

Disconnect the power supply before carrying 
out any installation or maintenance work on this 
control unit and associated components. This 
control unit and associated components should 
only be installed by a competent person (i.e. a 
qualified electrician). Electrical installation must 
be in accordance with appropriate statutory 
regulations.

MOUNTING OF SENSOR

The floor sensor contains a safety extra-low 
voltage (SELV) circuit, allowing it to be placed 
as close to the floor surface as necessary with-
out having to take account of the risk of shock 
should the sensor cable become damaged. The 
two wires from the sensor to the mounting box, 
must be additionally insulated, e.g. shrink flex. 
To prevent loose cables from the fixed instal-
lation from coming into contact with the 
terminal block for the floor sensor, they must be 
restrained using cable ties. 

It is recommended that the cable and sensor be 
placed in a non-conductive installation pipe em-
bedded in the floor (fig. 3). The end of the pipe 
must be sealed and the pipe placed as high as 
possible in the concrete layer. Alternatively, the 
sensor can be embedded directly in the floor. 
The sensor cable must be led through a sepa-
rate pipe or segregated from power cables.
The floor sensor must be centred between the 
heating cable. 

The sensor cable may be extended up to 100 
m by means of a separate two-core cable. Two 
vacant wires in a multi-core cable used, for 
example, to supply current to the floor heating 
cable must not be used. The switching peaks of 
such current supply lines may create interfer-
ence signals that prevent optimum controller 
function. If a shielded cable is used, the shield 
must not be connected to earth (PE). The two-
core cable must be placed in a separate pipe or 
segregated from power cables.

MOUNTING OF THERMOSTAT 

WITH BUILT-IN SENSOR

The room sensor is used for comfort tempera-
ture regulation in rooms. The thermostat should 
be mounted on the wall approx. 1.6 m above 
the floor in such a way as to allow free air circu-

lation around it. Draughts and direct sunlight or 
other heat sources must be avoided (fig. 4). No 
external sensor is connected.

Mounting of thermostat 

1.  Slide the power button down to Off “0”.
2.  Release the front cover ONLY by inserting a 

small screwdriver into the hole on either side 
of the thermostat.

3.  Connect the wires in accordance with the 

diagram (fig. 2). 

4.  Mount the thermostat in the wall socket. 
5.  Fit the frame and carefully press the cover 

onto the thermostat. Ensure that both the 
power slide button on the cover and the 
power switch pin are down.

DO NOT

 open the thermostat by releasing the 

four fixing clips on the back.

First time settings:

The first time the thermostat is connected, push 
the power slide button to On “I”. Language, time 
and date must be set using the buttons:
1.  Set language
2.  Set time 
3.  Set date

PROGRAMMING

See user manual.

FAULT LOCATION

If the sensor is disconnected or short-circuited, 
the heating system is switched off. The sensor 
can be checked against the resistance table 
(fig. 5). 

ERROR CODES

E0:   Internal error. The thermostat must be 

replaced.

E1:  Built-in sensor short-circuited or  

disconnected.

E2:  External sensor short-circuited or  

disconnected.

E5:  Overheating, The temperature is too high in  
 

the thermostat and switch off the heating. 

CE MARKING

According to the following standard: 
LVD/EMC: EN 60730-2-9

CLASSIFICATION

The product is a Class II device (enhanced 
insulation) and must be connected to in the 
following way: 
Term. 1: Neutral (N
Term. 2: Phase (L) 230 V ±10%, 50/60 Hz 
Term. 3–4: Load, max. 16 A / 3600 W
Term. X: Do not connect
Term. 5-6: External floor sensor

ENVIRONMENT AND RECYCLING

Please help us to protect the environment by 
disposing of the packaging in accordance with 
national regulations for waste processing.

RECYCLING OF OBSOLETE APPLIANCES

Appliances with this label must not 
be disposed of with general 
household waste. They must be 
collected separately and disposed 
of in compliance with local 
regulations.

 

TECHNICAL DATA

Voltage  ............................ 230 VAC ±10% 50 Hz
Max. pre-fuse .............................................. 16 A
Built-in circuit breaker ....................  2-pole, 16 A

Output relay ..................................
 .................................Make contact - SPST - NO
Output ................................  Max. 16 A / 3600 W
Control principle .................................... PWM/PI
Stand-by power .......................................  0.6 W 
Battery backup.......................................  5 years
Temperature range .............................. +5/+40°C
Limit sensor (OCD4) ............................ +5/+40°C
Ambient operating temperature .......... +0/+25°C
Energy monitor, accuracy ............................. 2%
Control pollution degree .................................. 2
Rated impulse voltage ................................ 4 kV
Enclosure rating ......................................... IP 21
Dimensions ..................... H/81, W/81, D/40 mm
Build-in depth ......................................... 20 mm
Display .......  100x64 pixel STN - white backlight
EU Registered Design  ........  001101349-0001/2

The thermostat is maintenance free.

OJ ELECTRONICS A/S

Stenager 13B · DK-6400 Sønderborg
Tel: +45 73 12 13 14 · Fax: +45 73 12 13 13
[email protected] · www.oj.dk

Español

El termostato de encendido y apagado es 
electrónico y controla la temperatura por medio 
de un sensor NTC ubicado en el exterior o en el 
interior del termostato.
El termostato es para montaje a ras en un re-
ceptáculo de pared. Se dispone de una placa de 
base para el montaje mural externo.

PROGRAMA DE PRODUCTOS

OCC4-1991   Termostato horario que incluye 

sensor de piso.

OCC4-1999   Termostato horario y sensor inte-

grado de temperatura ambiente.

OCD4-1999   Termostato horario y dos sensores. 

Sensor de piso y sensor incorpora-
do de temperatura ambiente.

ADVERTENCIA

 – Instrucciones de seguridad 

importantes. Desconecte la fuente de alimen-
tación eléctrica antes de realizar cualquier 
instalación o trabajo de mantenimiento en esta 
unidad de control y componentes relaciona-
dos. Solamente una persona competente (por 
ejemplo, un electricista cualificado) deberá 
instalar esta unidad de control y componentes 
relacionados. La instalación eléctrica debe reali-
zarse de acuerdo con las directivas estatutarias 
apropiadas.

MONTAJE DEL SENSOR

El sensor de piso contiene un circuito de segu-
ridad de voltaje extra bajo (SELV, por su sigla en 
inglés), que le permite ser colocado tan cerca 
de la superficie del piso como sea necesario 
sin tener que tomar en cuenta riesgo alguno de 
electrocución si el cable del sensor se dañase.  
Además, es preciso aislar con material termoen-
cogible (p.ej. Shrink Flex) los dos alambres que 
van del sensor a la caja de montaje. 
Para impedir que los cables sueltos de la insta-
lación fija entren en contacto con el bloque de 
terminales para el sensor de piso, será necesa-
rio sujetar dichos cables con amarras. 

Se recomienda colocar el cable y el sensor en 
un tubo de instalación no conductivo incrustado 

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