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AURATON Cetus User Manual
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AURATON Cetus User Manual

AURATON Cetus User Manual

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AURATON Cetus
User manual ver. 20211103
The document collects information concerning safety, assembly and use of the device AURATON
Cetus.
Daily hard-wired temperature thermostat (single-sensor)
AURATON Cetus is a daily, hard-wired thermostat designed to work with a gas or electric heating
device.
U
FrostGuard function
Protects against freezing of the room.
&
Possibility of temporarily lowering the programmed temperature
For a maximum of 12 hours.
Z
Holiday mode
Up to eight days independent of the programmed temperature.
Backlit LCD display
LCD
The backlit display allows you to supervise the operation of the device even in poorly lit
rooms.

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Summary of Contents for AURATON Cetus

  • Page 1 The document collects information concerning safety, assembly and use of the device AURATON Cetus. Daily hard-wired temperature thermostat (single-sensor) AURATON Cetus is a daily, hard-wired thermostat designed to work with a gas or electric heating device. FrostGuard function Protects against freezing of the room.
  • Page 2 Description of AURATON Cetus daily hard-wired temperature thermostat On the front part of the thermostat housing there is a backlit LCD display, four function buttons and a temperature setting knob with the button. LCD display Setting knob with integrated button Thermostat on/off...
  • Page 3 Display Temperature – In normal operation mode, AURATON Cetus displays the temperature of the room in which it is installed. Battery depletion ( Indicator visible when the minimum acceptable battery voltage is exceeded. Replace the batteries as soon as possible.
  • Page 4 Choosing the right location for AURATON Cetus The correct operation of AURATON Cetus is largely influenced by its location. The location in a place without air circulation or in direct sunlight may cause improper temperature control. AURATON Cetus should be installed on an internal wall of a building (partition wall) in an environment of free air circulation.
  • Page 5 Wire terminals are located on the rear panel of AURATON Cetus, under a plastic cover.

  • Page 6: Battery Replacement

    After connecting the wires, reinstall the plastic cover. Battery replacement The battery socket is located inside AURATON Cetus on the front part of the housing. To install the batteries, remove the thermostat housing as shown in section “Connecting the wires to AURATON Cetus”.
  • Page 7 Insert two AAA 1.5 V batteries into the battery socket, making sure the battery terminals are aligned correctly. NOTE: After replacing the battery and installing the cover, we recommend pressing the button twice to stabilise the relay operation. Mounting of AURATON Cetus – daily hard-wire thermostat...
  • Page 8 Drill two holes of 6 mm diameter in the wall (the spacing of the holes should be determined by the rear part of the AURATON Cetus housing). Insert the wall plugs into the drilled holes. Screw the rear part of the AURATON Cetus housing to the wall using the screws provided. Put on the AURATON Cetus housing. NOTE: In the case of a wooden wall, there is no need to use wall plugs.
  • Page 9 When assembling the housing, make sure that the connection “pins” are not bent and are in place on the relay board. This is critical to the proper operation of the thermostat. First start-up of AURATON Cetus When the batteries are properly inserted in the sockets, the LCD display will show all segments for a...
  • Page 10 After a moment, the current room temperature is automatically displayed. AURATON Cetus is ready for operation.

  • Page 11: Temperature Setting

    The first press of any function key always turns on the backlighting, and only the next press calls up the key function. After a moment, the current room temperature is automatically displayed. AURATON Cetus is ready for operation. In order to set the desired temperature in the normal operation mode, one should: Press the .
  • Page 12 Setting the “temporary temperature lowering” mode & If, for various reasons, we would like to lower the temperature in the room at a certain time every day, it is possible to temporarily reduce it by up to 5 °C. In order to do that one should: &...
  • Page 13 For a selected number of hours, AURATON Cetus will be in the “temporary temperature lowering” mode, and will start it up every day at the same time. NOTE: After the set hour time, AURATON Cetus will return to the basic temperature setting. Instead of the moon ( ), the sun ( ) will appear on the screen.

  • Page 14: "Manual" Mode Setting

    Deactivating the “temporary temperature lowering” mode AURATON Cetus will perform the programmed mode of temporary temperature lowering every day at the same time until the temporary lowering is deactivated. To switch off, press the button again, and hold it for 3 seconds “Manual”...
  • Page 15 Turning the knob to the left or right sets the desired temperature value. Confirm the selection with...
  • Page 16 Earlier deactivation of “manual” mode AURATON Cetus will carry out the programmed manual mode until the programmed time expires. To deactivate “manual” mode earlier, press the button again.
  • Page 17 AURATON Cetus is equipped with a special FrostGuard function protecting the room against possible freezing. This function is activated when AURATON Cetus is switched off.. With AURATON Cetus switched off, when the temperature in the room drops to 2 °C, the symbols ( and ( ) appear on the display, and the relay switches on.
  • Page 18 (PWM) By changing the hysteresis settings (chapter “Configuration settings”) you can enable the PWM. mode. In this mode, AURATON Cetus cyclically switches on the heating device to minimize temperature fluctuations. AURATON Cetus checks the times of temperature rise and fall.
  • Page 19 Knowing these values, AURATON Cetus switches the heating device on and off in such cycles to maintain the temperature as close to the setpoint value as possible. Temperature Time Setpoint temperaturę Room temperature NOTE: In the PWM mode, AURATON Cetus can switch on the heating device despite the fact that the room temperature is higher than the setpoint temperature.
  • Page 20 If no button is pressed for 10 seconds during the programming of a function, it is equivalent to pressing the button. After the relay is switched off (heating function), it can be switched on again not earlier than after 90 seconds. Connection diagram of AURATON Cetus NOTE: Auraton Cetus can work with gas OR electric heating devices.

  • Page 21: Cleaning And Maintenance

    Heating device, e.g. gas furnace Electric heating device (MAX 230 V AC, 16 A) Cleaning and maintenance Clean the outside of the unit with a dry cloth. Do not use solvents (such as benzene, thinner or...

  • Page 22: Technical Specifications

    alcohol). Do not touch the unit with wet hands. Doing so may result in an electric shock or serious damage to the unit. Do not expose the unit to excessive smoke or dust. Do not touch the screen with a sharp object. Avoid contact of the device with liquids or moisture.
  • Page 23 Contact and address of the manufacturer LARS, ul. Świerkowa 14 64-320 Niepruszewo www.auraton.pl Download User manual Declaration of conformity...