OJ Electronics MTD3 User manual

Thermostat MTD3
Instructions
67771A 07/20 (BCH)
© 2020 OJ Electronics A/S
• English
• Polski
• Русский

© 2020 OJ Electronics A/S © 2020 OJ Electronics A/S
2
INSTRUCTIONS
English.................................................................................. 3
Polski .................................................................................. 25
Русский.............................................................................. 47

© 2020 OJ Electronics A/S © 2020 OJ Electronics A/S 3
Thermostat MTD3
English
Instructions

© 2020 OJ Electronics A/S© 2020 OJ Electronics A/S
4
Instructions MTD3
TABLE OF CONTENTS
1 Technical Specifications...............................................................................5
2 Box Content .................................................................................................6
3 Important Safety Instructions.......................................................................8
4 Installing the Sensor ..................................................................................10
5 Placement of the Thermostat.....................................................................12
6 Preparing the Thermostat for Mounting.....................................................14
7 Connections...............................................................................................16
8 Mounting the Thermostat...........................................................................18
9 Using the Thermostat.................................................................................20
10 Menu Structure ..........................................................................................22
11 Error Codes................................................................................................23
OJ Electronics A/S hereby declares that the product conforms with the
following directives of the European Parliament:
LVD - Low Voltage Directive
EMC - Electromagnetic Compatibility
RoHS - Restriction of the Use of Certain Hazardous Substances
WEEE - Waste Electrical and Electronic Equipment
Applicable standards:
CE: EN 60730-1, EN 60730-2-9
This thermostat can be used as a controller for electric room heating pursuant
to EN 50559.

© 2020 OJ Electronics A/S© 2020 OJ Electronics A/S 5
MTD3 Instructions
1. TECHNICAL SPECIFICATIONS
Control pollution degree....................................................................................2
Software class.................................................................................................. A
Built-in circuit breaker .....................................................................2-pole, 16 A
Enclosure rating.......................................................................................... IP 21
Overvoltage category .......................................................................................III
Rated impulse voltage................................................................................. 4 kV
Ball pressure temperature (TB)..................................................................125°C
Voltage.......................................................................... 230 V AC ± 10%, 50 Hz
Max. prefuse................................................................................................ 16 A
Output ................................................................................................ Max. 16 A
Output relay............................................................. Make contact - SPST - NO
Output applications................................Resistive load 16 A Inductive load 1 A
Terminal wire size ..........................≤ 13 A - 1.5 mm2, > 13 A to 16 A - 2.5 mm2,
solid core wire
Method of mounting...................................................................Flush mounting
Dimensions............................................................................... 84 mm x 84 mm
Build-in depth.......................................................................................... 20 mm
Sensor type ..........................................................................NTC 12 kΩ @ 25°C
Max. sensor extension ............................................................................... 10 m
Temperature range .............................................................................. +0/+40°C
Control principle.................................................................................... ON/OFF
Purpose of control............................Thermostat for electric underfloor heating
Design of control ................................................................................... PWM/PI
Type of action................................................................................................ 1.B
Standby power....................................................................................... < 0.5 W
Display.................................................................................................. Segment

© 2020 OJ Electronics A/S© 2020 OJ Electronics A/S
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Instructions MTD3
BR1033A01a
BR1033A01a
© 2016 OJ Electronic A/S

© 2020 OJ Electronics A/S© 2020 OJ Electronics A/S 7
MTD3 Instructions
2. BOX CONTENT
• Thermostat
• Floor sensor

© 2020 OJ Electronics A/S © 2020 OJ Electronics A/S
8
Instructions MTD3
BR1033A02a
BR1017A02
© 2016 OJ Electronic A/S

© 2020 OJ Electronics A/S © 2020 OJ Electronics A/S 9
MTD3 Instructions
3. IMPORTANT SAFETY INSTRUCTIONS
Warning:
• 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.
• Protection against electric shock must be guaranteed by appropriate
mounting. The requirements of Class II are fulfilled after appropriate
mounting (reinforced insulation).
• Installation must be carried out by qualified personnel in accordance with
appropriate statutory regulations (where required by law).
• Installation must comply with national and/or local electrical codes.
Caution:
• These instructions must be observed, otherwise the liability of the
manufacturer 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 o - but
rather set at the lowest possible setpoint / frost protection when heat is not
required.
Notice:
• The language used in the original documentation is English. Other language
versions are a translation of the original documentation.
• OJ Electronics cannot be held liable for any errors in the documentation.
OJ Electronics reserves the right to make alterations without prior notice.

© 2020 OJ Electronics A/S © 2020 OJ Electronics A/S
10
Instructions MTD3
BR1033A05a
BR1033A05a
© 2016 OJ Electronics A/S

© 2020 OJ Electronics A/S © 2020 OJ Electronics A/S 11
MTD3 Instructions
4. INSTALLING THE SENSOR
• Insert the cable and sensor into a non-conductive 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.
• The sensor cable may be extended with additional two-core cable (max.
sensor extension, see Technical Specifications).
• 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. Ensure that
the insulation on both electrical wiring and floor sensor inside the junction
box are not damaged. Never use two vacant wires in a multi-core cable.

© 2020 OJ Electronics A/S © 2020 OJ Electronics A/S
12
Instructions MTD3
BR1033A04a
BR1033A04a
140-160cm
© 2016 OJ Electronics A/S

© 2020 OJ Electronics A/S © 2020 OJ Electronics A/S 13
MTD3 Instructions
5. PLACEMENT OF THE THERMOSTAT
• The thermostat must be mounted on the wall 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.

© 2020 OJ Electronics A/S © 2020 OJ Electronics A/S
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Instructions MTD3
BR1033A03a2
BR1033A03a2
© 2016 OJ Electronics A/S
1
2
3
2
3
5
4

© 2020 OJ Electronics A/S © 2020 OJ Electronics A/S 15
MTD3 Instructions
6. PREPARING THE THERMOSTAT FOR MOUNTING
• Switch o the thermostat
• Grasp the thermostat with one hand, holding the (closed) front with your
thumb on one side and your index and middle finger on the other side. The
bottom of the thermostat should be facing you.
• Insert a small screwdriver into the hole to the right, in the bottom of the
thermostat.
• Turn the handle of the screwdriver outwards while gently pulling the right
side of the bottom a few millimetres towards you.
• Insert the small screwdriver into the hole to the left, in the bottom of the
thermostat.
• Turn the handle of the screwdriver outwards while gently pulling the left side
of the bottom a few millimetres towards you.
• When the bottom side of the front is loose, pull the front gently away from
the back part.

© 2020 OJ Electronics A/S© 2020 OJ Electronics A/S
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Instructions MTD3
BR1033A14
BR1033A14
© 2018 OJ Electronics A/S
S
L
N
12 34S56
L
L1
N
L2
230VAC
50 Hz
588526A
N
L2
L
L1
MAX LOAD
16A
SENSOR
L1/L3
T35 IP21
Made in Denmark
Stenager 13b DK-6400
© 2018 OJ Electronics A/S R

© 2020 OJ Electronics A/S© 2020 OJ Electronics A/S 17
MTD3 Instructions
7. CONNECTIONS
Ensure that the mains and load cables are connected as shown in the figure.
Terminal 1: Phase: (L / L1)
Terminal 2: Neutral: (N / L2)
Terminal 3: Load: (L / L1) Resistive load only
Terminal 4: Load: (N / L2) Resistive load only
Terminal S: Night setback (full-wave) / Frost protection (half-wave)
Terminal 5: Sensor (no polarity)
Terminal 6: Sensor (no polarity)

© 2020 OJ Electronics A/S© 2020 OJ Electronics A/S
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Instructions MTD3
BR1033A07a
BR1033A07a
© 2016 OJ Electronic A/S

© 2020 OJ Electronics A/S© 2020 OJ Electronics A/S 19
MTD3 Instructions
8. MOUNTING THE THERMOSTAT
• Mount the thermostat in the wall socket.
• Fit the frame and carefully press the cover onto the thermostat - starting
with the upper part of the cover, then the lower part of the cover.
• Ensure that both the power slide button on the cover and the power switch
pin in the thermostat are down.
• Click the cover into place by applying light, even pressure.
Warning! Do not apply pressure to the display itself.
• DO NOT attempt to open the thermostat.

© 2020 OJ Electronics A/S© 2020 OJ Electronics A/S
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Instructions MTD3
http://downloads.mythermostat.info/7C1jRQlM