Grasslin thermio essential BFT Operating Manual
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Grasslin thermio essential BFT Operating Manual

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Operating manual
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thermio™ essential BFT

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Summary of Contents for Grasslin thermio essential BFT

  • Page 1 Operating manual thermio™ essential BFT...
  • Page 2 This manual ensures safe and efficient use of the “thermio™ essential BFT” frost 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 Download www.graesslin.de : You can find the following information at • Declaration of conformity • Download instructions • Technical data...
  • Page 4 Overview....................5 Safety..................... 7 Installation....................8 Setting up the device......................9 Installation in a flush-mounted socket................. 14 On-wall mounting....................... 19 Operation..................... 21 Switching on the frost thermostat..................21 Setting the temperature setpoint..................21 Switching off the frost thermostat..................22 Disposal....................23...

  • Page 5: Overview

    Overview Design Fig. 1: Front and side view of the “thermio™ essential BFT”...
  • Page 6 Temperature adjustment knob for temperature setpoint Indicator marker Clearly marked dial Status lamp (lit when device is in operation) Manual switch for switching on and off (ON/OFF) Description of function The “thermio™ essential BFT” frost thermostat is an analogue thermostat. The device protects central boilers or pipes from freezing at low room temperatures by regulating to a set temperature setpoint.

  • Page 7: Safety

    Safety Intended use • The device may only be used for regulating the temperature (-5°C to +15°C) of indoor heating sys- tems. • The device has the following areas of application: Boilers, heating systems, water pipes and cylin- ders. Intended use also includes compliance with all the specifications in this manual. Any use other than the intended use is considered incorrect use.

  • Page 8: Installation

    Installation Installation location In order to ensure fault-free measurement by the device, choose the right installation location. Fig. 2: Installation location requirements...

  • Page 9: Setting Up The Device

    Setting up the device Personnel: • Qualified electrician Special tool: • Flat-head screwdriver Fig. 3: Removing the housing cover...
  • Page 10 Push down the engagement hook (Fig. 3/1) on the top of the device and pull the housing cover forward to remove. Setting the temperature setpoint Fig. 4: Marking of the recommended temperature setpoint...
  • Page 11 Recommended tem‐ Marking Number perature setpoint 4 °C (Fig. 4/1) ½ 5 °C (Fig. 4/2) 6 °C (Fig. 4/3) For the required temperature setpoint, turn the triangle on the temperature adjustment knob (Fig. 4/4) to the relevant marking (|, ½ or +). If you want to set a different temperature setpoint, put the housing cover back (but do not engage it) and set the temperature setpoint with the temperature adjustment knob and the clearly marked dial.
  • Page 12 Locking the temperature setpoint (optional) Fig. 5: Locking the temperature setpoint Bend the latch (Fig. 5/1) inwards with a flat-head screwdriver until it is stuck in an increment of the temperature adjustment knob.
  • Page 13 The recommended temperature setpoints correspond to the following increments: − 4 °C corresponds to 18 – 19 − 5 °C corresponds to 19 – 20 − 6 °C corresponds to 20 – 21 The temperature adjustment knob is locked. ð...

  • Page 14: Installation In A Flush-Mounted Socket

    Installation in a flush-mounted socket Personnel: • Qualified electrician Installing the mounting plate Fig. 6: Mounting plate of the thermio BFT Align the mounting plate so that the “separate” slot (Fig. 6/1) is at the top. Attach the mounting plate to the flush-mounted socket with the screws (3.5 x 20 mm).
  • Page 15 Electric connections Strip the connection wires to a length of 8 mm (cross-section between 1 mm² and 3.5 mm²). Fig. 7: Cable feed-through and terminal strip Cable feed-through Electrical connections Earth Thread the connection wires into the device through the cable feed-through (Fig. 7/1).
  • Page 16 To ensure that the wiring is correct, consult the operating manual for the heating system in use. The devices have protection class 1, so earthing is essential. Connect the earth correctly.
  • Page 17 Fig. 8: Wiring diagram On/off switch Neutral conductor NC (normally closed contact) NO (normally open contact) Live conductor Insert the connection wires into the corresponding terminal (Fig. 7/2) in accordance with the wiring diagram (Fig. 8) and tighten them with 0.6 Nm.
  • Page 18 Installing the housing base Fig. 9: Attaching the housing base Attach the housing base to the mounting plate with screws (3.0 x 15 mm) via the holes (Fig. 9/1). Closing the housing Place the housing cover on the housing base and engage the engagement hook.

  • Page 19: On-Wall Mounting

    On-wall mounting Personnel: • Qualified electrician Fig. 10: Transferring the hole pattern Mark the hole pattern of the housing base (Fig. 10/1) onto the wall and drill holes at the points you marked (5 mm diameter and at least 25 mm deep).
  • Page 20 Insert suitable wall-plugs into the holes. Electric connections Strip the connection wires to a length of 8 mm (cross-section between 1 mm² and 3.5 mm²). Thread the connection wires into the device through the cable feed-through (Fig. 7/1). To ensure that the wiring is correct, consult the operating manual for the heating system in use.

  • Page 21: Operation

    Operation Switching on the frost thermostat Personnel: • User To switch on the device, turn the manual switch (Fig. 1/5) to ON. Setting the temperature setpoint The temperature setpoint can only be adjusted or modified if the temperature adjustment knob was not locked during installation Ä Chapter "Setting up the device"...

  • Page 22: Switching Off The Frost Thermostat

    Switching off the frost thermostat Personnel: • User To switch off the device, turn the manual switch (Fig. 1/5) to OFF.

  • Page 23: 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. − Disposal must be environmentally responsible and must employ state- of-the-art environmental protection, recycling and disposal technology.
  • Page 24 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 80.10.1471.7/0417/V01...

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