AURATON Libra R

User manual ver. 20220222
The document presents collected information on safety, assembly and use of Auraton Libra R.

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Weekly, wireless thermostat (transmitter)

AURATON Libra R (transmitter) is a weekly, wireless thermostat designed to work with the AURATON Aries and with the AURATON Fornax.

Description of the AURATON Libra R

weekly, wireless thermostat (transmitter)

There is a backlit LCD display, four function buttons and a temperature setting knob with an OK button on the front part of the thermostat’s casing.

1. LCD display
2. setting knob with integrated ( button
3. mode selection buttons:
   S – day mode – comfort,
   T – night mode – economic
4. selection button
5. date/time/day of week setting button
6. temperature setting button

Display

1. Day of the week (8) – Indicates what day of the week it is. Each day is assigned a number.
2. Temperature – AURATON Libra R displays the temperature of the room in which it is installed in normal operation mode.
3. Temperature unit – tells you that the temperature is displayed in Celsius degrees (°C).
4. Clock
   Time is displayed in a 24-hour system.
5. Timeline
   Program progress indicator. The timeline is divided into 24 segments, each of which corresponds to one hour. It shows how a given program is implemented. (see chapter “Timeline”)
6. Day mode indicator (S)
   Indicates that AURATON Libra R is operating in the day mode. (patrz rozdział: „Programowanie temperatur”)
7. Night mode indicator (T)
   Indicates that AURATON Libra R is operating in the night mode. (see chapter “Temperature programming”)
8. Anti-freezing mode indicator (U)
   Indicates that AURATON Libra R is operating in the anti-freezing mode. (see chapter “Anti-freeze mode”)
9. Manual control indicator (V)
   Appears when no program is used. (see chapter “Manual control mode”)
10. Broadcast symbol (W)
    Indicates communication with the receiver.
11. AURATON Libra R activation indicator (Y)
    Segment giving information about the operating status of AURATON Libra R. Visible when the regulator is turned on.
12. Program number
    Indicates the number of the currently running program. (see chapters “Factory programs” and “Weekly programming”)
13. Dead batteries (X)
    The indicator is visible when the minimum permissible battery voltage level is exceeded. The batteries need to be replaced as soon as possible.
    IMPORTANT:
    In order to maintain any programmed parameters, the battery replacement operation should not exceed 30 seconds.

Choosing the right location for AURATON Libra R

The correct operation of AURATON Libra R is largely influenced by its location. Using the device in a place with no air circulation or a place with direct sunlight may result in incorrect temperature control. AURATON Libra R should be installed on the internal wall of a building (a partition wall), in an environment with free air circulation. You should avoid proximity to heat-emitting devices (TV, heaters, refrigerators) or locations exposed to direct sunlight. The vicinity of doors and exposing AURATON Libra R to possible vibrations may also cause problems with proper operation of the device.

Battery replacement

The battery compartment is located inside AURATON Libra R in the front of the casing. To install the batteries, remove the casing of AURATON Libra R as shown in the figure below:

1. AAA 1.5 V battery socket

Insert two 1.5 V AAA batteries into the battery compartment, paying attention to the correct polarity of the batteries.

Mounting AURATON Libra R – the weekly, wired thermostat

In order to mount AURATON Libra R on the wall:

1. Remove the casing (as shown in the “Battery Replacement” section)
2. Drill two holes with a diameter of 6 mm in the wall (mark the spacing between the holes using the rear part of the AURATON Libra R casing).
3. Put wall plugs in the drilled holes.
4. Fix the rear part of the casing of AURATON Libra R to the wall using the screws included in the kit.
5. Put the casing on.

1. hole for fastening screw

Turning AURATON Libra R on for the first time

Setting the clock and day of the week

To set the clock:

1. Press the m button. The hour segment on the display will start flashing.

   

2. Turn the knob to the left or right to set the required hour and confirm with using the ( button.

3. Turn the knob to the left or right to set the correct value on the minute segment and confirm using the ( button.

   

4. A flashing symbol of the day of the week appears in the upper left corner. Turn the knob to the left or right to set the day and confirm the selection using the ( button.

   

   IMPORTANT:
   You can also switch by pressing the m button.

Default program setting

• Monday – Friday:
  The heating device maintains the day temperature (S) from 05:00 to 8:00 A.M. and from 3:00 to 11:00 P.M.
• Saturday – Sunday:
  The heating device maintains the day temperature (S) from 06:00 A.M. tp 11:00 P.M.
• default temperature settings:
  S day temperature – 21,0 °C
  T night temperature – 19,0 °C
  U anti-freeze temperature – 7,0 °C

Programming day and night temperatures

AURATON Libra R allows you to program 2 types of temperature:

• Day temperature (S) – from 5 to 30°C
• Night temperature (T) – from 5 to 30°C

To set one of the temperatures above:

1. Press the n button.

2. The display will show the currently set temperature with one of the two symbols:
   S – day temperature;
   T – night temperature.

   

3. Turn the knob to the left or right to set the desired temperature value.
4. Pressing the n button will switch the edit mode between the day and night temperatures (S, T).
5. After setting the temperatures, confirm using the ( button.

Introduction to programming

Timeline

The timeline on the LCD display is divided into 24 sections. Each of them symbolizes 1 hour of the day.
Black rectangles above the timeline mean that the day temperature has been programmed for specific hours, and that there is no night temperature.

Example:

The figure above shows that from 6.00 A.M. to 11.00 P.M. Auraton Libra DS will control the heating device in such a way that the room temperature will be day temperature (S). AURATON Libra R will switch to night temperature from 11.00 P.M. to 6.00 A.M. (T).

Factory programs

In order for AURATON Libra R to know when to turn on the day and night temperatures, you should be set to an appropriate program for each day of the week. For this purpose, you can use one of the three factory programs (from 0 to 2):

Program no. 0 – anti-freezing U
Unmodifiable factory program. Designed for all-day anti-freezing temperature setting.

Program no. 1 – weekly
Unmodifiable factory program. Sets day temperature from 5:00 to 8:00 A.M. and from 3:00 to 11:00 P.M.

Program no. 2 – weekend
Unmodifiable factory program. Sets day temperature from 6:00 A.M. to 11:00 P.M.

Programs no. 3, 4,…., 8 – user-defined programs
Programs from 3 to 8 are user-defined programs. They can be freely modified and adapted to specific requirements.

Programming

Weekly programming

To program AURATON Libra R, set the day temperature intervals for
individual days of the week. At other time, night temperature will be
set.

Sample AURATON Libra R setting from Monday to Sunday. Outside the
intervals programmed, the night temperature will be set.

Day	Day temperature
Monday	5:00 – 8:00 A.M.; 3:00 – 11:00 P.M.
Tuesday	5:00 – 8:00 A.M.; 3:00 – 11:00 P.M.
Wednesday	5:00 – 8:00 A.M.; 3:00 – 11:00 P.M.
Thursday	5:00 – 8:00 A.M.; 3:00 – 11:00 P.M.
Friday	5:00 – 8:00 A.M.; 3:00 – 11:00 P.M.
Saturday	8:00 A.M. – 11:00 P.M.
Sunday	8:00 A.M. – 11:00 P.M.

Program selection

To set the program:

1. Press the h key. Program
   number segment will start blinking.

   

2. Press the m key as many times as
   required to set the day of the week for the program.

   

3. Press the h key several times and
   select the program number requested. Programs 0-2 are
   factory-set, programs 3-8 can be edited.

   

4. Confirm selection pressing the ( key.
5. Repeat the procedure for the following days of the week.

Modyfying user-defined programs

To set the program:

1. Press the h key. Program number segment will start blinking.

   

2. Press the m key as many times as required to set the day of the week for the program.

   

3. Press the h key several times to select the program number required. Programs 0-2 are factoryset,
   programs 3-8 can be edited.

   

4. All (24) black rectangles will appear on the timeline. Each of them
   symbolises 1 hour. A visible rectangle indicates day temperature set for the given time. If no rectangle is displayed, night temperature is set.

   Blinking rectangle indicates the point of the timeline which is modified.

   

5. Press the r key to select day (rectangle on) or night temperature (no rectangle). Then, select the time interval for the temperature selected with the knob.

   

6. By pressing the r key and selecting time interval the entire program is modified.

   

7. Confirm selection with the ( key.

Manual control

V

Option 1:
If, for some reason, you want to stop the current program at a given moment and extend the day or night temperature, you can do it manually, but for not longer than 24 hours. To do this you should:

Hold the r button for 3 seconds. Then, using the knob, select the number of hours of manual operation (24 hours at the most) and confirm the setting using the ( button.

AURATON Libra R will wait until you choose one of the two temperatures which it should maintain (day or night). The change is made by using the r button or the knob. Confirm the selection using the ( button.

Option 2:
If you want to suspend the execution of a given program, e.g. due to a party lasting longer than expected, but AURATON Libra R has already started lowering the temperature for the night (the T symbol has appeared on the display), you should:
Press the r button, the display will show the symbols of a V and the S. The day temperature will then be maintained until the next temperature change carried out by the program.
To withdraw the above-mentioned action press the ( button. The r symbol will disappear from the display.

Similarly, if the program is using the day temperature but you want it to implement the night temperature immediately, you should:
Press the r button. The display will show the symbols of a V and the T. The night temperature will then be maintained until the next temperature change carried out by the program. To withdraw the above-mentioned action press the ( button. The r symbol will disappear from the display.

Anti-freezing temperature

U

In the event of being away for a long time, it is possible to turn on the anti-freezing temperature mode. It allows you to avoid the unpleasant consequences of water freezing in the heating system by automatically setting the temperature to 7 °C. To set the anti-freezing program, simply select program 0 for the desired day of the week.

Pairing the AURATON Libra R weekly, wireless thermostat (transmitter) with the AURATON Fornax heating or air-conditioning device controller (receiver)

After connecting to the mains, switch the receiver on by briefly pressing the power button (F). When the device is switched on, the green power diode lights up and there is an audible single sound signal. To switch off the receiver e.g. outside the heating season, hold down the power button for 3 seconds until there is an audible double sound signal, and the green power diode switches off, which means that the heating device has also been switched off.

1. To initiate the pairing of AURATON Libra R (transmitter) with AURATON Fornax, press the right pairing button (D) – a single sound signal on the AURATON Fornax receiver, and hold it for at least 3 seconds, until the LED diode starts blinking green (double sound signal), then release the button.
   The AURATON Fornax receiver will wait 120 seconds for pairing. After this time elapses, it will automatically return to normal operation.
2. Press the h button on AURATON Libra R (transmitter) for 5 seconds until the broadcast symbol (W) ights up on the display. Release the button – AURATON Libra R transmits the pairing signal for 5 seconds.
3. Successful completion of pairing is signalled when the green LED diode on the AURATON Fornax receiver is no longer blinking, a single sound signal is heard, and the receiver returns to normal operation.

If there is a pairing error, please repeat steps 1 and 2. In case of further errors, unpair the device by RESETTING the AURATON Fornax receiver, see “RESET – Unpairing a device paired with AURATON Fornax – wireless heating or air-conditioning device controller (receiver)” and trying to pair the devices again.

Signalling the working status and data package reception

Each reception of radio transmission from a paired device is signalled by the AURATON Fornax receiver by a temporary alternating colour change of the LED diodes. When the relay is turned on, the LED diode is red and when the relay is turned off, the LED diode is green.

Unpairing AURATON Libra R – weekly, wireless thermostat paired with AURATON Fornax

1. To initiate the unpairing of AURATON Libra R (transmitter) paired with the AURATON Fornax receiver, press the left unpairing button (E) on the receiver and hold it for at least 3 seconds, until the LED diode starts blinking red, then release the button. The sound signals work in the same way as in the case of pairing, i.e. pressing a button is signalled by a short sound signal and after 3 seconds a double short sound signal is heard.
   The AURATON Fornax receiver waits for the device to be unpaired for 120 seconds. After this time elapses, it will automatically return to normal operation.
2. Press the h button on AURATON Libra R (transmitter) for 5 seconds until the broadcast symbol (W) lights up on the display. Release the button.
3. Successful completion of unpairing is signalled when the red LED diode on the AURATON Fornax receiver is no longer blinking, a single sound signal is heard, and the receiver returns to normal operation.

If there is an unpairing error, please repeat steps 1 and 2. In case of further errors, unpair the paired device, see “RESET – Unpairing a device paired with AURATON Fornax – wireless heating or air-conditioning device controller (receiver)”. patrz “RESET – Unpairing a device paired with AURATON Fornax – wireless heating or air-conditioning device controller (receiver)”.

RESET – Unpairing a device paired with AURATON Fornax – wireless heating or air-conditioning device (receiver)

In order to unpair a device (e.g. a thermostat) paired with AURATON Fornax, simultaneously press and hold both pairing and unpairing buttons (D and E) for at least 5 seconds, until the LED diode starts to alternate blinking green – red. Then release both buttons. Sound signals: pressing the button, a short sound signal – after 5 seconds, a double short sound signal.
Successful completion of device unpairing is signalled after about 2 seconds, when the signalling changes to green, and then fades out for a short time.

Resetting AURATON Libra R

To perform a reset, remove the battery and wait until the data on the display disappears.

Master reset of AURATON Libra R

MASTER RESET is performed by pressing and holding the ( button and at the same time installing the batteries. This causes AURATON Libra R to return to its factory settings.

Configuration settings

Configuration settings are set one after another:

To enter the edit mode of the configuration settings, hold the h and ( buttons simultaneously for 3 seconds until the settings menu is displayed.

Heating mode/air-conditioning mode

AURATON Libra R can work in two modes:

	Heating mode (preset) – set it if you want AURATON Libra R to cooperate with heating devices.
	Air-conditioning mode – set it if you want AURATON Libra R to cooperate with air-conditioning devices.

Turn the knob to the left or right to set the required mode. Confirm your choice by pressing the ( button. AURATON Libra R will proceed to change the next parameter.

Changes in hysteresis

The hysteresis change mode is signaled by a flashing HI. Turn the knob to the left or right to set the desired hysteresis.
HI 2 – ±0.2 °C (preset),
HI 4 – ±0.4 °C,
HI P – PWM operating mode (see chapter “PWM operating mode”).

Confirm your choice by pressing the ( button. AURATON Libra R will proceed to change the next parameter.

Offset change

Offset allows you to calibrate temperature indications with a tolerance of ± 3 °C. AURATON Libra R may for example show that the temperature in the room is 23 °C, while a regular room thermometer next to it may show 24 °C. Changing the offset by +1 degree, will make AURATON Libra R show the same temperature as the room thermometer.

Clock calibration

This function is used to correct the clock indications in case of any deviations. If the clock is working incorrectly within a week, the extent of incorrect clock indications should be determined. This value should be entered in AURATON Libra R in the form of seconds.

Example 1:
After a week of operation, AURATON Libra R shows time accelerated by 1 minute and 20 seconds (60 + 20 = 80). In this case you should slow down the clock by setting C -80.

Example 2:
After a week of operation, the clock in AURATON Libra R is 2 minutes slow (2 x 60 = 120). In this case you should speed up the clock by setting C 120.

PWM operating mode

 (Pulse-Width Modulation)

By changing the hysteresis settings (chapter “Configuration settings”), you can turn on the PWM operating mode. In this mode, AURATON Libra R cyclically turns on the heating device in order to minimize temperature fluctuations. AURATON Libra R checks temperature rise times and temperature drop times.

Knowing these values makes AURATON Libra R turn on and off the heating device in appropriate cycles to maintain the temperature to the set value as close as possible.

Special cases

• When 3 consecutive transmissions are lost (after 15 minutes), AURATON Libra R (transmitter) will signal a malfunction on the AURATON Fornax receiver (the LED diode will alternate blinking red and green). Until the problem is resolved, the receiver will enter the stored on/off cycle from the last 24 hours.
• When the signal from AURATON Libra R returns, the error is cleared and the AURATON Fornax receiver returns to normal operation.

Additional remarks

• AURATON Libra R (transmitter) must be installed at least 1 metre away from the receiver (too strong a signal from the transmitter may cause interference).
• At least 30 seconds must elapse between switching the relay off and on again.
• Data from AURATON Libra R (transmitter) is transmitted to the AURATON Fornax receiver every time the ambient temperature changes by 0.2°C. If the temperature does not change, AURATON Libra R transmits control data every 5 minutes (this is signalled by a blinking orange diode on the receiver).
• In the event of a power failure, the AURATON Fornax receiver will switch off. After power is restored, the heating device will automatically switch on, and the AURATON Fornax receiver will wait for a signal from the paired AURATON Libra R (transmitter) no longer than 5 minutes after power is restored. After receiving the signal, the AURATON Fornax receiver will return to normal operation.
• Placing the AURATON Fornax receiver in a metal housing (e.g. mounting box, metal housing of a furnace) will cause interference with the operation of AURATON Libra R.
• You can turn control functions of AURATON Libra R (transmitter) on or off at any time (e.g. after the heating season) by briefly pressing the ( button (for about 5 seconds) (AURATON Libra R will only show the current time and temperature of the room – there will be no “timeline”).
• Pressing any function button for the first time always turns on the backlight, and then the function of a specific button. When using the knob, each step keeps the backlight on.
• When programming any function, not pressing any button for 10 seconds is equivalent to pressing the ( button.

Cleaning and maintenance

• The outside part the device should be cleaned with a dry cloth. Do not use solvents (such as benzene, thinner or alcohol).
• Do not touch the device when your hands are wet. It may cause electric shock or serious damage to the device.
• Do not expose the device to excessive smoke or dust.
• Do not touch the screen with a sharp object.
• Keep the device away from liquids or moisture.

Technical specifications

Power supply:	2 x AAA (2 x 1.5 V), alkaline
Working temperature range:	0 – 45 °C
Working status signaling:	LCD
Number of temperature levels:	2
Anti-freeze temperature:	7 °C
Temperature control range:	5 – 30 °C
Hysteresis:	±0.2 °C / ±0.4 °C / PWM
Working cycles:	Weekly programmable
Operation range:	in a typical building with standard wall construction – approx. 30 m; in open space – up to 300 m
Radio frequency:	868.850 MHz 869.000 MHz
Radio signal strength:	Up to 11 dBm
Level of security:	IP20
Dimensions [mm]:	90 x 90 x 36

Disposing of the devices

Hereby, LARS Andrzej Szymanski declares that the radio equipment type AURATON Libra R is in compliance with Directive 2014/53/EU and 2011/65/EU. The full text of the EU declaration of conformity is available below in the download area.

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Contact and address of the manufacturer:
LARS, ul. Świerkowa 14
64-320 Niepruszewo
www.auraton.pl

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Download

• User manual
• Declaration of conformity