OJ ELECTRONICS MCD3 Digital Thermostat Instructions

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MCD3-1999-OJE6  

MCD3-1999-UAE6  

INSTRUCTIONS  

• English  

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General	Details
Name	OJ ELECTRONICS MCD3 Digital Thermostat Instructions
Make	OJ Electronics
Language	English
Filetype	PDF (Download)
File size	0.22 MB

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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• OJ Electronics

OJ ELECTRONICS MCD3 Digital Thermostat Instructions Overview

Summary of Contents

• Page 1: INSTRUCTIONS
• Page 2: Illustrations Instructions
• Page 3: Page 3
• Page 4: Page 4
• Page 5: MCD3-1999-UAE6 Max load 16A IP21 T25 Made in Denmark 2022 OJ Electronics A/S
• Page 6: Introduction The thermostat is an electronic PWM/PI thermostat for temperature control by means of an NTC sensor located either externally or internally within the thermostat. The thermostat is for flush mounting in a wall box. A baseplate for wall mounting is also available. This thermostat can be used as a controller for electric room heating pursuant to EN 50559. Important safety instructions 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. Installation must be carried out by qualified personnel in accordance with appropriate statutory regulations. Installation must comply with national and/or local electrical regulations. This instruction 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.
• Page 7: 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. The language used in the original documentation is English. The manufacturer cannot be held liable for any errors in the documentation. The manufacturer reserves the right to make alterations without prior notice. Insert the sensor cable 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 thermostat should be mounted on the wall approx. 1.5 m above the floor to allow free air circulation around it. Draughts and direct sunlight or other heat sources must be avoided. Switch off the thermostat before opening it.
• Page 8: Turn the handle of the screwdriver outwards while gently pulling the bottom left side a few millimetres towards you. When the bottom part of the front is loose, pull the front gently away from the rear part. Mount the thermostat in the wall box. Ensure that both the power slide button on the cover and the power switch pin in the thermostat are down. 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. Click the cover into place by applying light, even pressure. Do not apply pressure to the corners of the display cover or to the display itself. Ensure that the mains and load cables are connected as shown in the figure. Terminal 1: Neutral: (N / L2) Terminal 2: Phase: (L / L1)
• Page 9: Operating the thermostat To turn the thermostat ON, open the front cover, push the ON/OFF switch up. Press ”” for 3 seconds to enter the settings. Use ”” and ”” to navigate through the settings. Press ”” for 8 seconds to enter the factory reset menu. Press ”” and ”” simultaneously for 3 seconds to enter and change the weekly schedule. Press ”” and ”” simultaneously for 8 seconds to lock or unlock the buttons. To activate or deactivate manual override, quickly press and release ””. This is indicated with a hand symbol on the main screen when activated. ”” and ”” are used to adjust the temperature or to navigate through the menu. You can find the full user manual by scanning the QR code or entering the URL in a browser.
• Page 10: Menu structure for daily use settings. Entry point for daily use settings. Entry point for initial setup or installation.
• Page 11: Settings Options Factory setting Clock Day Schedule Remote controlled temperature Open window Adaptive start Power limit
• Page 12: Error and warning codes provide crucial information regarding the thermostat's functionality. E0 (C-5E): Internal compensation sensor error indicates an internal fault requiring thermostat replacement. E1 (I-5E): Internal sensor error suggests a defective or short-circuited built-in sensor, necessitating thermostat replacement or use of the floor sensor only. E2 (E-5E): External sensor error points to a disconnected, defective, or short-circuited external sensor, requiring reconnection or replacement. E5 (I-OH): Internal overheat indicates that the internal temperature limit has been exceeded, prompting an inspection of the installation. The thermostat is maintenance-free, but air vents must remain clean and unobstructed. The thermostat should only be cleaned with a dry cloth. The product conforms to directives of the European Parliament, including LVD, EMC, RoHS, WEEE, and ECO Design. Applied standards include CE: EN 60730-1, EN 60730-2-9 and UKCA: BS 60730-1, BS 60730-2-9. Protection from electric shock must be ensured through appropriate installation according to Class II requirements.
• Page 13: 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 along with domestic waste. Technical specifications Purpose of control Mounting method Supply voltage Electrical underfloor heating Flush or surface mounted 230-240VAC, 50/60 Hz Max. pre-fuse Built-in circuit breaker Enclosure rating 2-pole, 16 A Current ≤ 13 A - 1.5 mm², solid core wire Current > 13 A to 16 A - 2.5 mm², solid core wire Output relay Max. 16 A / AC 230V Max. 16 A / 3600 W Standby consumption ≤0.75 W Dimensions 84mm (H), 84mm (W), 40mm (D) Installation depth <20mm Weight ≤150 g Display 21 x 21mm LCD Control pollution degree Overvoltage category Type of action Software class Rated impulse voltage Ball pressure temperature (TB) EU registered design
• Page 14: The trademark is registered and belongs to OJ Electronics A/S. © 2022 OJ Electronics A/S.