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Operating manual
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thermio™ eco C2

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Summary of Contents for Intermatic Grasslin thermio eco C2

  • Page 1 Operating manual thermio™ eco C2...
  • Page 2 This manual ensures safe and efficient use of the “thermio™ eco C2” 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.................... 20 On-wall mounting....................... 21 Inserting the battery......................31 Operation..................... 36 Prior to operation........................ 36 Setting the frost protection temperature................40 Setting the temperature setpoint..................41 Setting the date/time......................42 Programming periods......................
  • Page 5 Activating/deactivating the holiday function................. 47 Selecting the background lighting..................48 Replacing the battery................50 Disposal....................57 Technical data..................59 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 C2” thermostat is used to regulate two heating circuits. Hot water or heating cir- cuits can be connected and regulated independently of each other. Individual regulation of, for example, central heating and hot water is implemented using two 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 40.
  • Page 15: Contents

    Contents The following components are included in the contents: Number Designation Thermostat thermio™ eco C2 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 intended use also includes compliance with all information specified in this manual. Any use other than the intended use is considered incorrect use. The legal warranty is voided by any interference with, or modifications to, the device.
  • Page 19 Danger to life due to electric shock! Improper assembly and installation of the device may result in life-threat- ening electrical voltages. WARNING! − Have assembly and connection performed by a qualified electrician only. 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.
  • Page 20: 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 21: 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 22 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 23 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 24 Installing the mounting plate Fig. 4: Removing the mounting plate from the housing...
  • Page 25 Undo the screws (3.5 x 20 mm) on the housing. The screws in the housing are captive, in other words you can loosen them but you cannot remove them.
  • Page 26 Remove the mounting plate. Fig. 5: Cable feed-through 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).
  • Page 27 Insert the wall-plugs provided into the holes. Electric connections Strip the insulation from the connection wire. • Stripping length: 8 mm Thread the connection wire into the device through the cable feed-through (Fig. 5/3). Fig. 6: Wiring diagram Heating circuit Hot water NC Normally closed contact NO Normally open contact...
  • Page 28 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. 6).
  • 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...
  • Page 30 10. Attach the mounting plate to the wall-plugs with screws (3.5 x 25 mm). ð The mounting plate is now installed.
  • 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 Activating the settings Do not use a pencil or similarly fragile object to press the RESET button. Use a thin, non-metallic blunt object to press the RESET button. The device starts automatically. ð You have to reset the device with the RESET button each time you remove or insert a jumper.
  • Page 40: Setting The Frost Protection Temperature

    Setting the frost protection temperature Personnel: • User Prerequisite: • 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 both circuits are set to OFF.
  • Page 41: Setting The Temperature Setpoint

    Setting the temperature setpoint Personnel: • User Prerequisite: • 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.
  • Page 42: Setting The Date/Time

    Set the desired frost protection temperature using The frost protection temperature can be set to between +5°C and +20°C. Press to save the frost protection temperature. Set the desired temperature setpoint using The temperature setpoint can be set to between +5°C and +35°C. Press to save the temperature setpoint.
  • Page 43 Personnel: • User Prerequisite: • Cover is open. Slide the selection switch (Fig. 1/8) to CLOCK SET. The display turns on. ð Set the year with and save it with Set the month with and save it with Set the day with and save it with Set the hour with and save it with...
  • Page 44: Programming Periods

    Programming periods To keep the water and room temperature at a constant level, the system is switched on and off for periods of time. There are a total of three periods available for each day, and each can be programmed individually.
  • Page 45 Periods for heating circuit Press to program periods for the heating circuit. Set the time for P1 ON with and save it with Set the time for P1 OFF with and save it with Repeat steps 6 and 7 for the following two periods. Three periods are programmed for regulating the heating circuit.
  • Page 46: Selecting The Operating Mode

    11. Slide the selection switch (Fig. 1/8) to RUN. The device regulates according to the times entered. ð If the temperature regulation function is active, the device regu- lates according to the temperature setpoint set by the user. If the room temperature deviates from the temperature setpoint, the temperature regulation function switches on and overrides the programmed periods once for the deviation.
  • Page 47: Activating/Deactivating The Holiday Function

    • 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 press the SELECT button twice to activate operating mode ON 1 2 3 OFF...
  • Page 48: Selecting The Background Lighting

    • 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 Selecting the background lighting There are two setting options for the background lighting. AUTO - Background lighting automatically switches on for ten seconds when any button is pressed.
  • Page 49 • 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 50: Replacing The Battery

    Replacing the battery...
  • Page 51 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 52 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. • When you replace the batteries, the data is temporarily stored for 10 minutes by gold foil capaci- tors.
  • Page 53 Personnel: • User Special tool: • Flat-head screwdriver Materials: • 1 lithium battery of type 3V CR2032...
  • Page 54 Fig. 10: Removing the housing from the mounting plate Undo the screws on the housing. Remove the housing from the mounting plate.
  • Page 55 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 56 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 57: 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 58 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 59: 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 60 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 61 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 62 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 63 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 64 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 65 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 66 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 80.10.1494.7/0517/V02...

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