Grasslin thermio eco C3 Operation Manual
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Grasslin thermio eco C3 Operation Manual

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Operating manual
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thermio™ eco C3

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  • Page 1 Operating manual thermio™ eco C3...
  • Page 2 This manual ensures safe and efficient use of the “thermio™ eco C3” thermostat (referred to as “device” in the following). This manual is a component of the device and must remain accessible at all times for everyone who uses the device. Everyone who uses the device must have read and understood this manual before commencing any work.
  • Page 3 © Grässlin GmbH Bundesstr. 36 78112 St. Georgen GERMANY Declaration of conformity and download instructions The declaration of conformity for the device described in this manual, and a download of this manual, www.graesslin.de . can be found at...

  • Page 4: Table Of Contents

    Overview....................6 Design and function......................6 Contents..........................15 Safety....................16 Installation.................... 21 On-wall mounting....................... 22 Inserting the battery......................31 Operation..................... 36 Prior to operation........................ 36 Setting the frost protection temperature................39 Setting the temperature setpoint..................40 Setting the date/time......................42 Programming periods......................
  • Page 5 Activating/deactivating the holiday function................. 47 Selecting the background lighting..................47 Replacing the battery................49 Disposal....................55 Technical data..................57 α λ Ω...

  • Page 6: Overview

    Overview Design and function Design Fig. 1: Front and side view...
  • Page 7 SELECT button MODE button Boost button RESET button ADV. button Selection switch for operation, time and Holiday button programming Plus/minus buttons Cover The “thermio™ eco C3” thermostat is used to regulate three heating circuits. Hot water or heating cir- cuits can be connected and regulated independently of each other. Individual regulation of, for example, two independent heating zones (living and sleeping areas) and hot water is implemented using three independent switching outputs.
  • Page 8 Fig. 2: Rear view (without mounting plate) and mounting plate Frost protection function (jumper) Programming mode Temperature regulation function (jumper) Mounting plate Battery compartment...
  • Page 9 Temperature regulation function (for heating systems only) If the temperature regulation function (Fig. 2/3) is activated, the device measures the room temperature and regulates to an individually adjustable temperature setpoint Ä Chapter "Prior to operation" on page 36. The temperature regulation function (Fig. 2/3) and the frost protection function (Fig. 2/1) are activated and deactivated by means of what are known as jumpers.
  • Page 10 24 h - Use the same programming for each day - Days are programmed independently of each other 5/2 d - Use two programs, one for weekdays (Monday to Friday) and one for the weekend (Saturday, Sunday) The following periods are pre-installed on delivery: P1 On P1 Off P2 On...
  • Page 11 On delivery, the 7 d programming for all seven days of the week is used. The active temperature regulation function takes the programmed periods into consideration, provided that the temperature setpoint is maintained. If the room temperature deviates from the temperature set- point, the temperature regulation function switches on and overrides the programmed periods once for the deviation.
  • Page 12 Info on display Function ON 3 2 1 OFF The device switches 2 periods each day. P1 and P3 are executed, P2 is ignored. ON 3 2 1 OFF The device switches 1 period each day, from the first on-period to the last off-period (P1 On – P3 Off).
  • Page 13 Pressing the Boost button once extends/activates the period for one hour. Additional function ADV. button (Fig. 1/3) inverts the active period. The programmed periods are not affected. • ADV. during on-period: switches the active period off until the next programmed on-period •...
  • Page 14 On delivery, the frost protection function is activated and set to a temperature of +10°C. The frost pro- tection function can be deactivated on the rear of the device. The temperature of the frost protection function can be set to between +5°C and +20°C Ä Chapter "Setting the frost protection temperature" on page 39.

  • Page 15: Contents

    Contents The following components are included in the contents: Number Designation Thermostat thermio™ eco C3 Screws (3.5 x 25 mm) Screws (3.5 x 20 mm) Wall-plugs (5 x 25 mm) Jumpers Lithium battery of type 3V CR2032...

  • Page 16: Safety

    Safety Safety instructions Safety instructions are indicated in this manual by symbols. The safety instructions are introduced by signal words that express the extent of the danger. This combination of symbol and signal word indicates a potentially dangerous situation that may result in death or severe injuries if the situation is not avoided.
  • Page 17 This combination of symbol and signal word indicates potential dangers for the environment. ENVIRONMENT! Tips and recommendations This symbol highlights useful tips and recommendations, as well as informa- tion for efficient and fault-free operation. Intended use The thermostat may only be used for timer regulation (optionally for temperature regulation) of heating systems and hot water circuits in a temperature range from +5°C to +35°C.
  • Page 18 • Domestic heating technology for heating and water heating • Pump-controlled central heating systems • Gravity heating systems • The multi-channel capability enables compliance with Part L England, Part J Scotland and Part F Northern Ireland of the building regulations for homes exceeding 150 m². The intended use also includes compliance with all information specified in this manual.
  • Page 19 Residual risks The device is state-of-the art and designed in accordance with current safety requirements. However, residual risks remain that require caution when using the device. The residual risks, and the conduct and measures they require, are listed in the following. Danger to life due to electric shock! Improper assembly and installation of the device may result in life-threat- ening electrical voltages.
  • Page 20 Personnel requirements Qualified electrician Professional training, knowledge and experience, and knowledge of the relevant standards and regula- tions allows the qualified electrician to perform work on electrical systems and to identify, and avoid, potential dangers of their own accord. A qualified electrician is specifically trained for the work environment in which they work, and are familiar with the relevant standards and regulations.

  • Page 21: Installation

    Installation Installation location In order to ensure fault-free measurement by the room thermostat, choose the right installation location. Fig. 3: Installation location requirements...

  • Page 22: On-Wall Mounting

    On-wall mounting The device can be mounted on the wall or in a flush-mounted socket. If installed in a flush-mounted socket, no holes are drilled and the mounting plate is attached directly onto the flush-mounted socket with the screws. Danger to life due to electric shock! Improper assembly and installation of the device can lead to life-threatening electrical voltages.
  • Page 23 Danger of material damage to the wires in the wall! Selecting the wrong installation position can result in material damage to the wires in the wall. NOTICE! − Make sure that there are no wires in the wall at the installation position. Personnel: •...
  • Page 24 Prerequisite: • The terminals for the flexible wires must have a cross-section between 1 mm² and 2.5 mm². • If installing in a flush-mounted socket, make sure that the flush-mounted socket has been installed correctly and is dust-free.
  • Page 25 Installing the mounting plate Fig. 4: Removing the mounting plate from the housing Undo the screws (3.5 x 20 mm) on the housing.
  • Page 26 The screws in the housing are captive, in other words you can loosen them but you cannot remove them. Remove the mounting plate. Fig. 5: Cable feed-through...
  • Page 27 Mark the hole pattern from the mounting plate (Fig. 5/1 and 2) onto the wall. Drill holes at the points you marked (5 mm diameter and at least 25 mm deep). Insert the wall-plugs provided into the holes. Electric connections Strip the insulation from the connection wire.
  • Page 28 Fig. 6: Wiring diagram Heating circuit 2 Heating circuit 1 Hot water NC Normally closed contact NO Normally open contact Neutral conductor Live conductor To ensure wiring is correct, consult the operating manual for the heating system in use. Insert the connection wire into the corresponding terminal in accordance with the wiring diagram (Fig.
  • Page 29 Tightening torques To avoid damage and faulty contacts, tighten the terminals using a torque of 0.6 Nm. NOTICE! Tighten all terminals using the Phillips screwdriver. Fig. 7: On-wall mounting 10. Attach the mounting plate to the wall-plugs with screws (3.5 x 25 mm).
  • Page 30 The mounting plate is now installed. ð...

  • Page 31: Inserting The Battery

    Inserting the battery Handling batteries Risk of injury if batteries are handled incorrectly! Incorrect handling of batteries can result in a risk of batteries exploding or harmful liquids escaping from the batteries. WARNING! − Never attempt to charge batteries. − Never damage or deform batteries.
  • Page 32 − Make sure that batteries are inserted with the correct polarity.
  • Page 33 Inserting the battery Personnel: • User Special tool: • Flat-head screwdriver Materials: • 1 lithium battery of type 3V CR2032...
  • Page 34 Fig. 8: Lifting up the battery compartment On the rear of the device, carefully lift up the battery compartment with a flat-head screwdriver (Fig. 11/1). Pull the battery compartment out with your finger.
  • Page 35 Fig. 9: Inserting the battery Insert a battery with the correct polarity (Fig. 12). Re-insert the battery compartment.

  • Page 36: Operation

    Operation Prior to operation Prior to operation and programming, the following three functions must be preset: • Programming mode (Fig. 2/2) • Frost protection function (Fig. 2/1) • Temperature regulation function (Fig. 2/3) On delivery, the jumpers for the frost protection function and temperature regulation function are already inserted.
  • Page 37 Personnel: • Qualified electrician Special tool: • Phillips screwdriver Materials: • Jumper • Screws (3.5 x 20 mm) Deactivate frost protection (optional): Remove jumper from the opening for the frost protection function (Fig. 2/1). ð Frost protection function is deactivated. Deactivate frost protection (optional): Remove jumper from the opening for the temperature regulation function (Fig.
  • Page 38 Installing the housing Danger of material damage to the wires! When closing the housing, there is a risk of pinching wires. This results in material damage to the wires. NOTICE! − To avoid damage and faulty contacts, make sure that the wires are not pinched when the you close the housing.

  • Page 39: Setting The Frost Protection Temperature

    The device starts automatically. ð You have to reset the device with the RESET button each time you remove or insert a jumper. Depending on which jumpers are inserted, the frost protection temperature and the temperature of the temperature regulation function are set. For example, if the frost protection function is activated (jumper inserted) and the temperature regulation function is deactivated (jumper removed), only the temperature of the frost protection function is displayed for setting.

  • Page 40: Setting The Temperature Setpoint

    • Selection switch (Fig. 1/8) is set to RUN. • A jumper is inserted in the opening for the frost protection function (Fig. 2/1). Open the cover and fold it down. Press multiple times in succession until all the circuits are set to OFF.
  • Page 41 • Cover is open. • A jumper is inserted in the opening for the temperature regulation function (Fig. 2/3). Press multiples times in succession until one of the operating modes ON, 1, 2 or 3 is selected. Press and hold simultaneously for at least five seconds.

  • Page 42: Setting The Date/Time

    The temperature setpoint can be set to between +5°C and +35°C. Press to save the temperature setpoint. Setting the date/time For the device to execute the programming correctly, you first have to set the date and time. Personnel: • User Prerequisite: •...

  • Page 43: Programming Periods

    Set the day with and save it with Set the hour with and save it with Set the minutes with and save them with ð The date and time are now set. Slide the selection switch (Fig. 1/8) to to operate the device or slide it to PROG SET to pro- gram the device.
  • Page 44 The display turns on. ð Periods for water temperature Set the time for P1 ON with and save it with Set the time for P1 OFF with and save it with Repeat steps 2 and 3 for the following two periods. Three periods are programmed for regulating the water temperature.
  • Page 45 Checking the programming 11. Press the SELECT button for the relevant circuit. The periods for the relevant circuit are shown on the display. ð 12. Press to check the next period. 13. Slide the selection switch (Fig. 1/8) to RUN. ð...

  • Page 46: Selecting The Operating Mode

    Selecting the operating mode Personnel: • User Prerequisite: • Cover is open. Press the SELECT button for the circuit in question multiple times until the desired operating mode is selected on the display. Press the SELECT button once to switch to the next operating mode, e.g.: In operating mode ON 1 2 3 OFF ð...

  • Page 47: Activating/Deactivating The Holiday Function

    Activating/deactivating the holiday function Personnel: • User Prerequisite: • Cover is open. • Selection switch (Fig. 1/8) is set to RUN. Press Set the length of the holiday with and save it with The device is switched off for the specified period. ð...
  • Page 48 Personnel: • User Prerequisite: • Cover is open. • Selection switch (Fig. 1/8) is set to RUN. Press and hold for five seconds. Press to select the setting option. Press The selected background lighting is now activated. ð...

  • Page 49: Replacing The Battery

    Replacing the battery Handling batteries Risk of injury if batteries are handled incorrectly! Incorrect handling of batteries can result in a risk of batteries exploding or harmful liquids escaping from the batteries. WARNING! − Never attempt to charge batteries. − Never damage or deform batteries.
  • Page 50 − Make sure that batteries are inserted with the correct polarity. Replacing the battery If the batteries are flat, the battery symbol appears on the display. • Replace the batteries as soon as they are flat or after a longer period of non-use. •...
  • Page 51 Personnel: • User Special tool: • Flat-head screwdriver Materials: • 1 lithium battery of type 3V CR2032...
  • Page 52 Fig. 10: Removing the housing from the mounting plate Undo the screws on the housing. Remove the housing from the mounting plate.
  • Page 53 Fig. 11: Lifting up the battery compartment On the rear of the device, carefully lift up the battery compartment with a flat-head screwdriver (Fig. 11/1). Pull the battery compartment out with your finger. Remove used batteries and dispose of correctly.
  • Page 54 Fig. 12: Replacing the battery Insert a new battery with the correct polarity (Fig. 12). Re-insert the battery compartment. Place the housing on the mounting plate and screw it on tight.

  • Page 55: Disposal

    Disposal Improper disposal Incorrect disposal presents an environmental danger. Incorrect disposal could result in environmental dangers. − Electric scrap and electronic components must be disposed of correctly, ENVIRONMENT! i.e. the parts for disposal must be sorted into material groups. − Batteries/rechargeable batteries (Directive 2006/66/EC) and electrical or electronic scrap must under no circumstances be disposed of with gen- eral waste.
  • Page 56 Recycling If no agreement has been made covering return or disposal, ensure that the dismantled components are recycled: • Scrap metals. • Ensure plastic elements are recycled. • Dispose of other components after sorting them according to material properties.

  • Page 57: Technical Data

    α λ Ω Technical data Electrical data Supply voltage AC 230 V ±10% 50 – 60 Hz Battery replacement time (power reserve) > 30 days (programs saved in EEPROM) Switching output Changeover contact, potential-free Switching capacity – resistive load 3 A/ 250 V AC Switching capacity –...

  • Page 58: Electrical Connection

    α λ Ω Electrical data Control range +10°C (frost protection +5°C to +20°C) +5°C to +35°C Control accuracy ±0.5°C Sensor (thermistor) 100 K (at 25°C) NTC Rated impulse voltage strength (Uimp) 4 kV Electrical connection Device Screw terminals with wire protection, max. 2.5 mm²...

  • Page 59: Operating Data

    α λ Ω Operating data Operating mode RUN/AUTO Manual switch Boost time Channels Programs 7 days 5/2 days 1 – 7 days Advance Boost Holiday program Individual programming (max. 3 ON/OFF switching times)
  • Page 60 α λ Ω Operating data Daily program (ON/OFF) Weekly program (ON/OFF) Display and format Resolution Room temperature: 0.1°C Temperature setpoint: 1°C Time of day: 1 minute Display lighting Light blue Time display format 12 h format (AM/PM) 24 h format Shortest switching time Boost: 1, 2, 3 hours...

  • Page 61: Ambient Conditions

    α λ Ω Display and format ON/OFF: 10 minutes Programming time: 10 minutes Room temperature display +10°C to +50°C Summer/winter time Automatic summer/winter clock change Time Digital Status display Operating mode Status display for heating (lamp) Ambient conditions Humidity (in operation) 10% to 90% relative humidity, condensation-free Humidity (storage) 10% to 90% relative humidity, condensation-free...
  • Page 62 α λ Ω Ambient conditions Temperature (in operation) +0°C to +50°C Temperature (storage) -20°C to +50°C General data Colour White/grey Weight 330 g Material ABS plastic Size 125 x 89 x 35 mm Installation Wall-mounted or flush-mounted socket...
  • Page 63 α λ Ω Compliance with standards ErP class ErP function ON/OFF room thermostat ErP description Room thermostat that regulates the on/off state of a heating device ErP contribution to seasonal space heating energy efficiency IP code IP20 Protection class II, when installed accordingly Certification mark Energy Saving Trust...
  • Page 64 α λ Ω Compliance with standards Pollution degree Standards and directives Mode of operation and additional properties: Type...
  • Page 68 Grässlin GmbH Bundesstrasse 36 78112 St. Georgen GERMANY Telephone: +49 7724 933-0 Fax: +49 7724 933-240 Email: info@graesslin.de Internet: www.graesslin.de 80.10.1495.7/0217/V01...

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