Mod. KEO-A LCD
KEO-B LCD
User Manual

ELECTRONIC THERMOSTATS

Read all instructions carefully
Flush-mounting electronic thermostats for temperature control both in heating and cooling. They perform actions of type 1B and are intended for operating in environments with Pollution Degree 2 and Overvoltage Category III (EN60730-1).

• Keo-B LCD, with battery power supply and configurable auxiliary input for the connection of a temperature probe or an external contact with whom to reduce the setpoint of 3°C.
• Keo-A LCD with mains power supply.

SAFETY WARNINGS
During product installation and operation it is necessary to observe the following instructions:

1. 1) The device must be installed by a qualified person, in strict compliance with the connection diagrams.
2. Do not power or connect the device if any part of it is damaged.
3. After installation, inaccessibility to the connection terminals without appropriate tools must be guaranteed.
4. The device must be installed and activated in compliance with current electric systems standards.
5. Before accessing the connection terminals, verify that the leads are not live.
6. In the electrical system of the building where the device must be installed, a protection device from the overcurrents must be present (for KEO-A LCD only).

TECHNICAL SPECIFICATIONS

• Power supply Keo-B LCD:
  – 2 alkaline batteries 1.5V (AAA type)
  – battery life: 12 months
  – depleted batteries indication
• Power supply Keo-A LCD:
  — 230Vac (-15% + +10%) 50/60Hz
  – max absorption: 6 VA / 230Vac
• Installation on 3 modules box (503 type)
• Terminals Keo-B LCD:
  — 3terminals for 1.5 mm? cables for output relay 5A / 250 Vac
  — 2terminals for 1.5 mm? cables for digital input (3°C setpoint reduction)
• Terminals Keo-A LCD:
  – 3terminals for 1.5 mm? cables for bistable output relay 5A / 250 Vac
  – 2terminals for 1.5 mm? cables for power supply
• Operating mode: summer/winter/off (with antifreeze)
• Password protected lock keypad
• Regulation type:
  – on/off with settable differential (0.1 + 1°C)
  – P8 proportional with 0.8°C band (-0.3 + +0.5°C) and period 8 minutes
  – P15 proportional with 1.5°C band (-0.7 + +0.8°C) and period 15 minutes
• Measurement precision: + 0.5 °C
• Measurement temperature resolution: 0.1 °C
• Setpoint range: 2°C + +35°C
• Operating temperature: 0 °C = +50 °C
• Storage temperature: -10 °C + +65°C
• Operating humidity: 20-90% non condensing
• Protection degree: IP40
• Insulation: reinforced among accessible parts (frontal) and all other terminals

PACKAGE CONTENTS

WIRING DIAGRAMS

LEGEND

1. “Environment temperature” field
2. “Off” field
3. “Heating activation” field
4. “Cooling activation” field
5. “Active night reduction” field
6. Key “” Increases the selected fleid
7. Key “” decreases the selected fleid

BATTERY KEO – B LCD REMOVAL

ADJUSTABLE COVER PLATES

The adapters inside the box allow the monitoring of the following cover plates:

For information about the possibility to adapt the thermostat with different
cover plates from those listed, contact the Technical Service.
*through mount that you can buy on request code VE767500)

• Althe above rademarks are the property of their respective ovners.

INSTALLATION

• Install the thermostat at a height of about 1.5 m above the floor, away from direct sunlight, away from doors, windows, heat sources, locations with excess or total lack of ventilation.
• Install the white or anthracite grey frame according to your preferences by hooking it to the cogs of the device.
• Make the connections by respecting the diagrams described in this manual.
• Fix the device inside the 3 modules box in compliance with the assembly diagrams described on the back of this instruction sheet. The accessories for the installation included in the package allow the mounting of the plates described in the diagram “adjustable plates” and they are:
  – mountA
  – mount B (it could be necessary to remove the side cogs)
  – mountAIR
  – couple of side BM plastic elements (both of white colour and grey colour)
  – couple of side VI plastic elements (both of white colour and grey colour)
  – frames of white colour and anthracite grey.

OPERATION

During the standard operation the thermostat displays the detected temperature value and the relay status is identified by the symbol  (heating mode) or the symbol (cooling mode).
Setpoint modification

Depleted batteries signal
(Keo-B LCD only) Replace the batteries as soon as possible! Dispose of batteries in the appropriate recycling containers.
Switch off

Note: in heating mode (winter), the device if off, it regulates according to the antifreeze temperature Toff in order to prevent freezing of the system.
Toff can have values from 1 to 10° C or be excluded; in this case any minimum temperature is guaranteed.
Error messages

Occurs for the following values of measured temperature:
t<0°C
t>50°C (t > 60°C with external probe)
Oceurs In case of probe failure.
In this case the reguiation is inhibited and the relay contacts remain in position 2-3.
Reset

1. remove and restore power tothe device (Keo-A LCD) or remove “,fm”‘ the base and re-insert it (Keo-B LCD).
2. during the flashing of the backlighting press the keys and until will appear.
   The removal of the device occurs pulling on the convexity of the frame (box 5).

Default values

[Heating setpoint	21°C
Cooling setpoint	25°C
Minimum settable setpoint –	2°C
Maximum settable setpoint –	35°C
Operating mode	(heating)
Antifreeze temperature	6°C
Requlation type	On /0ff
Auiliary input	DIG
Password	– – – (desabled)

To enter menu Advanced programming keep simultaneously pressed for 3 seconds the keys and until will appear.
The items of the menu are displayed in succession. For each item is displayed an identi-fication abbreviation and its relative blinking value. Use the keys and to modify the value. The passage to the next parameter occurs after 3 seconds without pressing any key. Once all parameters are set the writing is displayed and the thermostat returns to normal operation saving the effected modifications.

	Minimum settable setpoint – It’s the minimum value settable as setpoint. Settable values: 2 / 35°C
	Maximum settable setpoint – It’s the maxlmum value settable as setpoint. Settable values: / 35 C
	Operating mode – if connected to the boller (heating) if connected to a cooling system
	Antifreeze temperature – (only in heating) Minimum temperature maintained with device off (see box «Switch off»). Settable values: 1 / 10 °C or — (excluded function)
	Regulation type – – (only i heating) = on/off wiith settable differential = proportional with band 0.8°C and period 8 minutes   = proportional with band 1.5°C and period 15 minutes
	Differential – – (only for on/off regulation) Differential (or nys(eresls) for temperature regulation. Settable values: 0.1 / 1°C
	Input eonflglnflon – Est – (only for Keo-B LCD) – for the connection of a temperature probe – for the connection of an externa contact to reduce the setpoint (see box “Auxiliary input cnfiguration”)
	Password for keypad lock – Set a value between 001 and 999 to activate the keypad lock. Set “– – 1to disable the lock. If the keypad lock is active, pressing one key appears and the password is required. If it’s properly inserted the keyboard is unlocked for the next 30 seconds.

Auxiliary input configuration (for Keo-B LCD only)
The Keo-B LCD has a configurable auxiliary input for the connection to alternative to:
– an external temperature probe
– an external contact for reducing the set temperature.
With closed contact, the setpoint is reduced by 3 °C than the set one and the symbol appears on the display.
To configure the auxiliary input, see “Advanced programming” in this manual.Backlighting management

• Keo-B LCD
  The keo-B LCD has a backlighting of blue colour that is normally off and turns on when you enter the menu: setpoint modification, advanced programming, pin enter.
• Keo-A LCD
  The Keo-A-LCD has a backlighting of blue colour which is on during normal operation.
  If the installation makes it necessary (for example bedrooms) you can turn off the bacKlighting. In this condition the thermostat continues to operate normally and the backlighting turns on when you enter setpoint modification menus, advanced programming, pin enter.

REFERENCE STANDARDS
Compliance with Community Directives
2014/35/EU (LVD)
2014/30/EU (EMCD)
is declared with reference to the following harmonized standards:

• CEI EN 60730-2-9

KEO-B LCD BATTERY MOUNTING

Bicino Living, I.igEM, Light Tech, Livinglight, Axolute series
Vimar Eikon, Eikon Evo, Plana series
Ave S44 series ~ ABB Mylos series*Note: only for installing the Vimar Idea series cover plate, use the side plastic elements VI.
ABB Chiara series
Vimar Arké, Idea seriesGewiss Chorus series

Bticion matix series

* Note: If the box extension is not present (adapter which increases the depth of the in-built box)
we recommend using the frame for installation Livinglight AIR.
Bticino Livinglight AIR series

AXO0 AIR mount not included in the package.
Bticino Axolute AIR series

KEO-A LCD MOUNTING

Bticino Living, Light, Light Tech, Livinglight, Axolute series imar Eikon, Eikon Evo, Plana series
Ave S44 series ~ ABB Mylos series

*Note: only for installing the Vimar Idea series cover plate, use the side plastic elements VI.
ABB Chiara series
Vimar Arké, Idea series

Gewiss Chorus series

Bticino Matix series

* Note: If the box extension is not present (adapter which increases the depth of the in-built box)
we recommend using the frame for installation
Livinglight AIR.
Bicino Livinglight AIR series

AXO0 AIR mount not included in the package.
Bticino Axolute AIR series

MKIS00744-022 EN
Vemer S.pA.
I – 32032 Feltre (BL) • Via Camp Lonc, 16
Tel +39 0439 80638 • Fax +39 0439 80619
e-mail: info@vemer.it
web site: www.vemerit

Documents / Resources

vemer VE267100 LCD Builtin Thermostat with Display [pdf] Instruction Manual VE267100, VE558300, VE267100 LCD Builtin Thermostat with Display, VE267100, LCD Builtin Thermostat with Display, Thermostat with Display, Display

References

• User Manual