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Nefit iRT 30 Instruction Manual

Programmable room thermostat
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Programmable roomthermostat
Instruction manual
iRT 30

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Summary of Contents for Nefit iRT 30

  • Page 1 Programmable roomthermostat Instruction manual iRT 30...
  • Page 3 temperature adjustment knob • Temperaturwahlschalter • bouton de réglage de la température • manopola di regolazione della temperatura • Temperatur indstillingsknap temporarily reduce the program-temperature • Programmtemperatur vorübergehend erniedrigen • abaisser temporairement la température du programme • riduzione temporanea della temperatura programmata •...
  • Page 4 Technical specifications EV-number 18127 EV-number optional outside sensor 18140 Power supply 2-core polarity-free low voltage connection with UBA-4000 Maximum wire thickness 1.5 mm Permissible ambient temperature: - in operation 0 °C - 50 °C - during storage - 20 °C - 60 °C Permissible relative humidity 0 - 90 %, non-condensing Electrical protection level...

  • Page 5: Table Of Contents

    6.2 CH menu Setting the hot water supply 7.1 Checking and/or changing the settings 7.2 Hot water menu Configuration and calibration of the IRT 30 thermostat 33 8.1 Adapting the configuration 8.2 Calibration Malfunctions and the display codes of the boiler 9.1 Malfunctions...

  • Page 6: Preface

    Also, an index is included.This enables you to easily find a specific subject in the manual. After reading the User Manual, you are able to use the IRT 30 clock thermostat.You can enter the desired program, so that you have the desired temperature at every moment of the day.This...

  • Page 7: Brief Description Of The Irt

    - supply the boiler with hot water at the right time, - save as much energy as possible. You can program the IRT 30 with a maximum of 70 switching points for one week. Furthermore, you can change the switching points, and remove or insert them.

  • Page 8: Selecting The Correct Kind Of Temperature Regulation

    3.2 Selecting the correct kind of temperature regulation In paragraph 3.1 the three kinds of temperature regulation for which the IRT 30 is suitable, are mentioned: - room temperature controlled regulation - weather dependent regulation - weather dependent regulation with room temperature compensation.
  • Page 9 - The measured temperature will be compared with the desired (set) temperature. - The IRT 30 determines how intensely the boiler has to burn to heat the CH-water, in order to achieve and maintain the desired temperature.
  • Page 10 What does the weather dependent regulation mean? - The heating intensity of the boiler is determined by the outside temperature and specific preset values on the IRT 30 clock thermostat. - When the outside temperature drops, the boiler will burn more intensely and heat the CH water to a higher temperature (up to a preset maximum temperature).
  • Page 11 - The CH water temperature will be determined, in first instance, by the outside temperature and the preset values in the IRT 30. - The IRT 30 also measures the temperature in the room where it is fitted.

  • Page 12: Operating Controls

    3.3 Operating controls The IRT 30 can be controlled on two levels (refer to the fold-out page, figure A and B): 1. With the flap closed (figure A); you now have access to: - The temperature adjustment knob, for manual adjustment of the temperature, - the + and –...
  • Page 13 0.5 °C lower/higher night setting (ECO-mode) vacation setting boiler display code, may indicate malfunction day number (Monday = 1,Tuesday = 2 ... Sunday = 7) time indication temperature indication Brief description of the IRT 30 English - 9...

  • Page 14: Operation

    - Ventilate well (briefly more ventilation takes less energy than ventilating a little for a long period). Clock - Set the clock of the IRT 30 to the correct time (if necessary), to ensure correct functioning of the clock thermostat (refer to paragraph 4.3: Setting the clock).

  • Page 15: Setting The Temperature

    Power supply - The IRT 30 does not use batteries but uses electric power. - The necessary electric power is supplied via a connection on the boiler. - During power failure or when switching off the power supply, the clock will continue for at least one hour.

  • Page 16: Setting The Clock1

    • Release the TIME key. – 4.4 Clock programs With the clock programs the IRT 30 can regulate the temperature automatically throughout the week.The clock program uses switching points.The program will switch over to your temperature settings on these points in time.
  • Page 17 As soon as you change a setting in the clock program, the clock symbol starts blinking. The IRT 30 is supplied with a standard clock program. This program looks like this:...

  • Page 18: Your Own Clock Program

    In the standard clock program for the weather dependent regulation you do not find temperatures, but scale points. One point of the scale corresponds with a temperature range of 0.5 °C to 2 °C.The calculation starts at 0, which corresponds with a standard room temperature (20 °C).
  • Page 19 4. Change the temperature as follows: - Press and hold the TEMPERATURE key. - Change the time using the program knob. - Release the TEMPERATURE key. – You have now changed a switching point. After a few seconds, the display shows the actual time and the measured room temperature (normal mode).
  • Page 20 8. Press and hold the TEMPERATURE key and select a time using the program knob. – 9. Release the TEMPERATURE key. You have inserted a switching point. Inserting a switching point at the current time You can also insert a switching point at the current time: 1.
  • Page 21 Copy the switching points of the previous day You can copy the switching points, set for a day, to the next day. For example, you can copy the switching points from Monday to Tuesday or from Sunday to Monday. Note: it is only possible to copy the switching points to the next day (for example, copying switching points from Friday to Monday is not possible).

  • Page 22: Special Functions

    4.6 Special functions Look at the current display codes of the boiler - Briefly press the HEATING key. The display codes of the boiler will be shown for 3 seconds on the temperature position. Also refer to paragraph 9.2 and the installation instructions of your boiler.
  • Page 23 On the display a suitcase symbol is shown to indicate the vacation setting is activated. Removing the vacation setting You can remove the vacation setting in two ways: - Press and hold the VACATION key. - Use the program knob to set the days to 0. –...
  • Page 24 3. Turn the program knob to change the setting.The boiler mode will change from ‘on’ to ‘off’ or the other way round. 4. Release the HEATING key. The display will show the current display code of the boiler for 3 seconds. •...
  • Page 25 Hot water If your boiler is also equipped with a hot water supply, or controls one, this hot water supply can be set to the ON, OFF or AUTO mode as desired: 1. Make sure the display is in normal mode (refer to figure 3-2). 2.

  • Page 26: Installation Of The Irt

    5.1 Mounting Check the contents of the package The package should contain the following: - 1 clock thermostat IRT 30 with mounting plate - 1 bag with 2 screws, 2 washers and 2 plugs - this manual. Find a suitable mounting position The thermostat should be mounted to an inside wall at a distance of approximately 150 cm above the floor.
  • Page 27 The mounting plate may not deform! (refer to figure 5-3). If you fix the mounting plate onto a standard terminal box, you only need to use the screws and the washers (refer to figure 5-4). figure 5-4 Installation of the IRT 30 English - 23...
  • Page 28 1. Hook the thermostat from the top onto the mounting plate. 2. Push the bottom side of the thermostat towards the wall until the thermostat clicks onto the mounting plate. figure 5-7 Installation of the IRT 30 24 - English...

  • Page 29: Testing The Thermostat

    Set the day number and the time to the correct value (refer to chapter 4). 5.3 Setting the thermostat Before you start using the IRT 30 thermostat, a few settings should be checked and, if necessary, changed: 1. Set the correct kind of temperature control; refer to chapter 6.

  • Page 30: Setting The Temperature Control

    6. Setting the temperature control 6.1 Selecting a temperature control The IRT 30 thermostat is suitable for 3 kinds of temperature control: - Room temperature controlled regulation (RR) - Weather dependent regulation (WD) - Weather dependent regulation with room temperature compensation (WD + RTC) Select one of these control before you continue.
  • Page 31 6. Check the temperature in the coldest room. 7. Set the firing characteristic using the CH menu when the temperature in the coldest room is too cold or too warm (refer to paragraph 6.2). For example, if it is too cold or too warm in a room during winter, the firing characteristic can be adjusted according to the following diagram.

  • Page 32: Ch Menu

    6.2 CH menu The CH menu appears on the display when you simultaneously press the keys MENU and CH.With the CH menu you can select the kind of temperature regulation and set all accompanying features. display desired CH water temperature 1.
  • Page 33 room temperature controlled regulation (RR) weather dependent regulation without room temperature compensation (WD) weather dependent regulation with room temperature compensation (WD + RTC) for WD and WD + RTC, the outside temperature will be displayed in the right bottom corner of the display as well. The settings described below are only applicable for weather dependent regulation (with or without room temperature compensation).

  • Page 34: Settings Of The Irt

    Minimum CH water temperature The thermostat takes care that the CH water temperature can never drop below this value. Standard, the minimum CH water temperature is set to 10 °C. If you release the CH key and wait for 5 seconds, the display returns to normal mode. Table 6-1 Standard firing characteristics for different types of installation Installation type Starting point End point Room influence...

  • Page 35: Setting The Hot Water Supply

    - Check with the hot water menu whether the hot water stop delay is set correctly. Change the hot water stop delay if necessary. - Leave the hot water menu. The IRT 30 thermostat is now ready for use. Setting the hot water supply English - 31...

  • Page 36: Hot Water Menu

    7.2 Hot water menu The hot water menu appears on the display when you simultaneously press the MENU and HOT WATER keys.With the hot water menu you can set during which period of the day, hot water is available. display desired CH water temperature 1.

  • Page 37: Configuration And Calibration Of The Irt 30 Thermostat

    8.1 Adapting the configuration The IRT 30 thermostat can be adapted, with a few settings, to the speed and the capacity of the CH installation.These settings are included in the configuration menu. In this menu you can: 1.
  • Page 38 4. Release the INSERT key. Adjust the clock speed. The IRT 30 thermostat has a internal clock.This clock can lose or gain some time in the long term. You can adjust the speed of the clock.When you enter a correction of ‘+1’, the clock will run 1 minute per year faster.

  • Page 39: Calibration

    3. Release the INSERT key. – 8.2 Calibration Although the sensors of the IRT 30 thermostat are of high- quality, some irregularities can not be avoided in the long term. You can recalibrate the sensors then. Only recalibrate the sensors when the measurement deviation becomes clearly evident and irritating.
  • Page 40 Calibration of the temperature sensor of the thermostat The temperature sensor in the IRT 30 thermostat should be calibrated when the measured temperature, shown on the display, deviates from the actual temperature. It is no simple task to determine the actual temperature in the room.The position you are measuring and the accuracy of...
  • Page 41 3. Turn the program knob, while holding the MENU and – REMOVE keys, until the blinking temperature reflects the actual outside temperature. 4. Release all keys when you are finished. Configuration and calibration of the IRT 30 thermostat English - 37...

  • Page 42: Malfunctions And The Display Codes Of The Boiler

    9. Malfunctions and the display codes of the boiler In this chapter, some possible problems/malfunctions will be described. Furthermore, the possible solutions will be given.You can always contact your installer if the problems persist. For some items, the solution depends on the set kind of regulation.This will be reflected by the following abbreviations: - RR = room temperature controlled regulation...
  • Page 43 The room becomes too warm (warmer then the set temperature). 1. Is the IRT 30 thermostat able to measure the correct temperature (only for RR and WD + RTC)? Is the IRT 30 thermostat installed on a cold outside wall or in stream of draught? 2.
  • Page 44 CV menu not set too high? The display shows an incorrect temperature 1. Is the IRT 30 thermostat able to determine the correct temperature? Is the thermostat installed on a cold or warm...

  • Page 45: Display Codes Of The Boiler

    2. Contact your installer when the clock loses or gains time. Malfunction of the communication 1. Is the wiring of the IRT 30 thermostat connected to terminal 3 and 4 of the terminal block in the boiler? 2. (only for WD and WD + RTC) Has the correct wiring (preferably 0.75 mm...
  • Page 46 Other codes: - Malfunction of the sensors. On the display appears: - the symbol of the mechanic - three blinking dashes (on the position of the temperature indication). - the symbol of the room temperature, or the symbol of the outside temperature, indicating which sensor is malfunctioning (refer to figure 9-2 and 9-3).

  • Page 47: Glossary

    CH water temperature (and the intensity of burning of the boiler) is achieved by the outside temperature and a number of preset values in the IRT 30.With this, the desired temperature will be reached as close as possible.You can influence the temperature in the rooms by using radiators with thermostatic radiator valves.
  • Page 48 IRT 30. However, the thermostat also measures the temperature in the room where it is fitted.The temperature in the room where the thermostat is fitted is determined by the thermostat itself.This measured temperature is compared with the set...

  • Page 49: Index

    11. Index Advanced heat-up 27 Outside temperature Air heating 5 sensor 4, 36 Boiler display codes 18, 37,40 Power 11 Change switching point 14 Reference room 4 Connection wiring 23 Reset 33 Control principle 10 Room temperature Convectors 5 controlled regulation 4, 42 CV menu 27 Safety regulations 2 Display 8...
  • Page 50 Settings of the IRT 30 Min./Max. settings Standard setting Your settings (by installer) CV menu (refer to paragraph 6.2) ECO-temperature 10 / 25 16 °C Advanced heat-up YES / NO Kind of temperatur regelation RR / WD / WD+RTC Installation type...

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