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I N S T R U C T I O N S

1

© 2017 OJ Electronics A/S

67096D 05/17 (LOA)

Type ETN4-1999

English

INTRODUCTION

The ETN4-1999 All-in-one is an electronic on/

off thermostat for 1 or 2 NTC sensors located 

externally. 

An All-in-one thermostat for many application 

types:

•  Electrical floor heating

•  Frost protection

•  Ice and snow melting

•  Cooling

The thermostat should be DIN rail mounted. 

This thermostat can be used as a controller for 

electric room heating pursuant to EN50559.

IMPORTANT SAFETY INSTRUCTIONS 

Warnings

  To avoid electric shock, disconnect 

the heating system power supply at 

the main panel before carrying out any 

work on this thermostat and associated 

components.

Installation must be carried out by qualified per-

sonnel in accordance with appropriate statutory 

regulations (where required by law).

Installation must comply with national and/or 

local electrical codes.

Cautions

 

This instruction must be observed, 

otherwise the liability of the manufac-

turer shall be voided.

Any changes or modifications made 

to this thermostat shall void the liability of the 

manufacturer.

Maximum product lifetime is achieved if the 

product is not turned off but set at the lowest 

possible set point / frost protection when heat is 

not required.

 

Notice 

 

The language used in the original 

documentation is English. 

Other language versions are a trans- 

lation of the original documentation.

The manufacturer cannot be held liable for any 

errors in the documentation. The manufacturer 

reserves the right to make alterations without 

prior notice.

Content may vary due to alternative software 

and/or configurations.

DISPOSAL AND RECYCLING

Environment and recycling

Protect the environment by disposing of the 

package in compliance with local regulations for 

waste processing.

Recycling of obsolete appliances

Equipment containing electrical 

components must not be disposed 

of along with domestic waste.

It must be separately collected to-

gether with electrical and electronic 

waste in accordance with current 

local regulations.

PRODUCT PROGRAMME

ETN4-1999  

Thermostat incl. floor sensor

SENSORS & ACCESSORIES

ETF-944/99-H  External room sensor

ETNK 

Wall box for DIN rail

MM-7595 

Electronic day/week timer 

FIG. 1 - INSTALLATION OF THERMOSTAT 

The thermostat should be DIN rail mounted. To 

cover the terminals, use ETNK wall box.

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.

Connections

Ensure that the main and load cables are con-

nected as shown in the figure.

Term. 1: 

  Line (L1) 230 V ±10%, 50/60 Hz 

Term. 2: 

  Neutral (L2/N) 

Term. 3: 

  Output for control, max. 100mA

Term. 4–5:    Load, max. 16 A / 3600 W

Term. 6: 

  Input, night setback (S)*

Term. 7: 

  Input, frost protection (   )

Term. 8-9:    External floor sensor (SELV)

Term. 10-11:   External room sensor (SELV)

Term. X:  

  Do not connect

Note: 

Use a Phillips PH2 or slotted 4x0.8 

mm screwdriver. Screws must be tightened 

to a torque of 0.5 Nm.

FIG. 1A+1B - NIGHT SETBACK / FROST 

PROTECTION

The thermostat  has 2 inputs for night setback 

and frost protection. 

Note: 

Do not use night setback and frost 

protection at the same time.

FIG. 2 - MOUNTING OF SENSORS

You can use the thermostat with external sen-

sors for room and/or floor.

The terminals for the sensor contain a safety 

extra-low voltage (SELV) circuit, allowing the 

sensor to be placed as close to the floor surface 

as necessary without the risk of electric shock, 

should the sensor cable become damaged.

Sensor cable recommendations

The following recommendations apply to all 

temperature sensor cables:

The sensor cable may be extended with ad-

ditional two-core cable (max. sensor extension, 

see technical specification).

The two wires from the sensor to the thermostat 

must be kept separate from high voltage wires/

cables.  

Place the sensor cable in a separate conduit or 

segregate it from power cables in some other 

way.  

Never use two vacant wires in a multi-core 

cable.

Shielded cable does not connect the shield to 

earth (PE).

Mounting of external floor sensor

The floor sensor is used for comfort tempera-

ture regulation in rooms on the basis of floor 

temperature.

Insert the cable and sensor into a non-conduc-

tive conduit embedded in the floor.

The end of the conduit must be sealed and 

the conduit placed as high as possible in the 

concrete layer.

The floor sensor must be centred between 

loops of heating cable.

FIG. 3 - Mounting of external room sensor

The room sensor is used for comfort tempera-

ture regulation in rooms based of the room 

temperature.

The thermostat must be mounted on the wall 

approx. 1.4 - 1.6 m above the floor in such 

a way as to allow free air circulation around 

it. Draughts and direct sunlight or other heat 

sources must be avoided.

OPERATING THE THERMOSTAT 

To turn on the thermostat , push the power 

slide button up to On “I”. The backlit display will 

briefly show the application and then the set 

temperature.

Settings

To set parameter values, press and hold the 

centremost button for three seconds. SCA 

 Hi 

 40 will appear on the display

.

Application overview

 

 

 

 

 

 

 

Note.

* Room sensor not in use.

Programming

See user manual.

FIG. 4 - TROUBLESHOOTING

If the sensor is disconnected or short-circuited, 

the heating system is switched off. The sensor 

can be checked against the resistance table.

Error codes

E0:   Internal error. The thermostat must be 

replaced.

E1:   External room sensor short-circuited or  

disconnected (terminal 10-11).

E2:  External floor sensor short-circuited or  

disconnected (terminal 8-9).

E5:  Overheating. The temperature is too high in  

the thermostat and the heating is switched  

off. 

Factory reset

Allows factory settings to be restored. Your 

personal settings will be deleted from the 

thermostat.

Press and hold the centremost button for 10 

seconds. The display is switched off and then 

on again. Application is shown on the display 

(APp 

F) followed by the temperature setting.

MAINTENANCE

The thermostat is maintenance free.

Thermostat 

with  

sensor for:

APp

F

Floor

APp

A

Room

APp

Li

Limit

APp

AF

Room/

floor limit

APp

C

Regulator

Floor

x

x

x

Room

x

x

Room and 

Floor

x

x

x*

x

x

Without

x

• English
• Deutsch
• Русский

Summary of Contents for ETN4-1999

Page 1: ...0 5 Nm FIG 1A 1B NIGHT SETBACK FROST PROTECTION The thermostat has 2 inputs for night setback and frost protection Note Do not use night setback and frost protection at the same time FIG 2 MOUNTING O...

Page 2: ...s Die in der Original Dokumentation verwendete Sprache ist Englisch Andere Sprachversionen sind eine bersetzung der Original Dokumenta tion Der Hersteller bernimmt keine Haftung f r eventuelle Fehler...

Page 3: ...nts ist LVD Niederspannungsrichtlinie EMV Elektromagnetische Vertr glichkeit RoHS Beschr nkung der Verwendung be stimmter gef hrlicher Stoffe WEEE Elektro und Elektronik Altger te Angewandte Normen un...

Page 4: ...ips PH2 4 0 8 0 5 1A 1B 2 2 SELV PE 3 1 4 1 6 I 3 SCA Hi 40 4 E0 E1 10 11 E2 8 9 E5 10 APp F APp A APp LI APp AF APp C x x x x x x x x x x x APp F OJ Electronics A S LVD RoHS WEEE EN 60730 1 EN 60730...

Page 5: ...onics A S 5 III 1 B A 4 125 C 12 100 Please follow the Sensor cable recommendations OJ ELECTRONICS A S Stenager 13B DK 6400 S nderborg Tel 45 73 12 13 14 Fax 45 73 12 13 13 oj ojelectronics com www oj...

Page 6: ...ROOM SENSOR BR 0991 A04b L2 N Fig 1 Abb 1 1 BR991A04b Fig 2 Abb 2 2 BR991A01a Fig 1a Abb 1a 1a BR991A02b Fig 1b Abb 1b 1b BR991A03b BR929A04a BR929A08 Sensor Temp C Value ohm 10 0 10 20 30 64000 38000...

Page 7: ...2017 OJ Electronics A S 7...

Page 8: ...emark is registered and belongs to OJ Electronics A S 2017 OJ Electronics A S OJ ELECTRONICS A S Stenager 13B DK 6400 S nderborg Tel 45 73 12 13 14 Fax 45 73 12 13 13 oj ojelectronics com www ojelectr...

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