Vemer Keo-A Bedienungsanleitung

Vemer Thermostat Keo-A

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5ADJUSTABLE COVER PLATES

1 7 OPERATIONUser Manual

ELECTRONIC THERMOSTATS

 Read all instructions carefully

INSTALLATION

4KEO-B REMOVAL

3WIRING DIAGRAMS

PACKAGE CONTENTS

Setpoint modificationOperating mode setting

Depleted batteries signal

(for Keo-B only)

Error probe signal

Night reduction (for Keo-B only)

thermostat

Cover, knob and plastic elements are available in white and anthracite grey colours

Covers

VI plastic

elements BM plastic

elements

A mount

AIR mount

B mount

COM

NA NC

N L

230V~

EXTERNAL

CONTACT

Keo-A Keo-B

COM

NA NC

1 2 3 4 5 1 2 3 4 5

Regulation type setting

Vemer S.p.A.

I - 32032 Feltre (BL) • Via Camp Lonc, 16

Tel +39 0439 80638 • Fax +39 0439 80619

e-mail: info@vemer.it - web site: www.vemer.it

MKIS00745-012-EN Mod. KEO-A

KEO-B

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).

• , with battery power supply and an input for the connection of an Keo-B

external contact with whom to reduce the setpoint of 3°C.

• Keo-A with mains power supply.

Code Model Description

VN170700 Keo-B Battery thermostat with digital input

VN171500 Keo-A 230V Thermostat

SAFETY WARNINGS

During product installation and operation it is necessary to observe the

following instructions:

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 instrument must be installed,

a protection device from the overcurrents must be present (for Keo-A model

only).

TECHNICAL SPECIFICATIONS

• Power supply Keo-B: – 2 alkaline batteries 1.5V (AAA type)

– battery life: 12 months

– depleted batteries indication

• Power supply Keo-A: – 230Vac (-15% ÷ +10%) 50/60Hz

– max absorption: 6 VA / 230Vac

• Installation on 3 modules box (503 type)

• Terminals Keo-B:

– 3 terminals for 1.5 mm2 cables for output relay 5A / 250 Vac

– 2 terminals for 1.5 mm2 cables for digital input (3°C setpoint reduction)

• Terminals Keo-A:

– 3 terminals for 1.5 mm2 cables for bistable output relay 5A / 250 Vac

– 2 terminals for 1.5 mm2 cables for power supply

• Operating mode: summer/winter/off (with antifreeze)

• Regulation type:

– on/off with fixed differential (0.3°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

• Setpoint range: 5°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

• Mechanical locks on the knob to limit the setpoint

The thermostat signals the error probe condition by blinking the LED 2 times

per second.

In this case the regulation is inhibited and the relay contact is kept open.

Contact Vemer Technical Assistance.

The Keo-B has an input to whom to connect an external contact.

With closed contact, the setpoint is reduced by 3°C than is set with the knob

(in heating mode only).

• 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.

• The device is sold already mounted

with anthracite colour. To transform it

in the white version, remove the knob

and the cover, acting on the hooks

placed on the upper and lower side

of the device and mount the cover

and the white knob included in the

package.

• Make the connections by respecting

the diagrams described in this manual.

The choice of the operating logic occurs

via selector switch placed on the front

of the device. It’s possible to choose

among 3 modes:

• cooling mode. Place the selector

switch in position if the device is

connected to a cooling system. The

output relay is activated when the

environment temperature is higher

than the set one.

• off mode. Place the selector switch in position in case the system should be

turned off for long periods.

Note: In this condition, the thermostat activates the heating system if the

temperature falls below 2 °C (antifreeze temperature).

• heating mode. Place the selector switch in position if the device is

connected to a heating system. The output relay is activated when the

environment temperature is lower than the set one.

The device has a jumper with whom to

choose the type of regulation, between

on/off or proportional.

To access the jumper you need to remove

the cover after removing power supply

to the device. The position of the jumper

determines the type of regulation as

follows:

− jumper in position A: ON/OFF regulation

with fixed differential at 0.3°C

(default setting)

− jumper in position B: proportional regulation with band 0.8 °C

(-0.3 +0.5) and 8 minutes time base

− jumper in position C: proportional regulation with band 1.5 °C

(-0.7 +0.8) and 15 minutes time base

Example of proportional operation with band 0.8°C and 8 minutes base

Tmis = Tset + 0.5 °C = relay OFF

Tmis = Tset + 0.4 °C = 1 minute ON ; 7 minutes OFF

Tmis = Tset + 0.3 °C = 2 minutes ON ; 6 minutes OFF

Tmis = Tset + 0.2 °C = 3 minutes ON ; 5 minutes OFF

Tmis = Tset + 0.1 °C = 4 minutes ON ; 4 minutes OFF

Tmis = Tset = 5 minutes ON ; 3 minutes OFF

Tmis = Tset - 0.1 °C = 6 minutes ON ; 2 minutes OFF

Tmis = Tset - 0.2 °C = 7 minutes ON ; 1 minute OFF

Tmis = Tset - 0.3 °C = relay ON

Example of proportional operation with band 1.5°C and 15 minutes base

Tmis = Tset + 0.8 °C = relay OFF

Tmis = Tset + 0.7 °C = 1 minute ON ; 14 minutes OFF

Tmis = Tset + 0.6 °C = 2 minutes ON ; 13 minutes OFF

Tmis = Tset + 0.5 °C = 3 minutes ON ; 12 minutes OFF

Tmis = Tset + 0.4 °C = 4 minutes ON ; 11 minutes OFF

Tmis = Tset + 0.3 °C = 5 minutes ON ; 10 minutes OFF

Tmis = Tset + 0.2 °C = 6 minutes ON ; 9 minutes OFF

Tmis = Tset + 0.1 °C = 7 minutes ON ; 8 minutes OFF

Tmis = Tset = 8 minutes ON ; 7 minutes OFF

Tmis = Tset - 0.1 °C = 9 minutes ON ; 6 minutes OFF

Tmis = Tset - 0.2 °C = 10 minutes ON ; 5 minutes OFF

Tmis = Tset - 0.3 °C = 11 minutes ON ; 4 minutes OFF

Tmis = Tset - 0.4 °C = 12 minutes ON ; 3 minutes OFF

Tmis = Tset - 0.5 °C = 13 minutes ON ; 2 minutes OFF

Tmis = Tset - 0.6 °C = 14 minutes ON ; 1 minute OFF

Tmis = Tset - 0.7 °C = relay ON

Note: The proportional regulation is available only for the heating operation.

Note: The position of the jumper is read only when the device is on.

Change the position of the jumper when the device is supplied, as well as

expose you to possible shock, so it is useless.

To change the setpoint, turn the knob. The range of settable values is from

5°C to 35°C.

On Keo-A the activation of the relay is signaled by the red LED.

On Keo-B the activation of the relay is not reported to limit battery

consumption.

The device has two ring nuts to

limit mechanically the range if the

thermostat is installed in public places

or in hotel rooms.

To limit the range, proceed as follows:

- Set the knob in an intermediate

value of the desired range (for

example if you want to limit the

range between 15°C and 25°C

turn the knob until the indicator is

in position 20°C).

- Remove the knob.

- Under the knob there are two ring nuts marked by the word “min” and

“MAX”, respectively for the lower and upper limit.

- Turn the “min” ring nut clockwise and “MAX” anticlockwise until the

desired position (in this case 15 for min and 25 for MAX).

- Replace the knob, making sure that the indicator of the setpoint on the

knob is in the same position when the knob has been removed (in this case

20°C).

To remove the limitation to the setpoint and reset the range 5÷35°C turn the

two ring nuts up to bring the locks of limitation in a position outside the range

5÷35°C.

• 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:

- mount A

- mount B (it could be necessary to remove the side cogs)

- mount AIR

- 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)

- covers and knobs of white colour and anthracite grey colour.

• When you turn on for the first time the thermostat is performed a cycle of switching

of the relay of OFF-ON-OFF type of the total duration of 3 seconds. Once finished the

cycle the thermostat begins with the regulation.

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)

• All the above trademarks are the property of their respective owners.

ABB Chiara series

ABB Mylos series

Ave S44 series

Bticino Axolute series

Bticino Axolute Air

Bticino Light series

Bticino Light tech series

Bticino Living series

Bticino Livinglight series

Bticino Livinglight Air series

Bticino Matix series

Gewiss Chorus series

Vimar Eikon series

Vimar Eikon Evo series

Vimar Idea series

Vimar Plana series

Vimar Arké series

REFERENCE STANDARDS

Compliance with Community Directives

2014/35/EU (LVD)

2014/30/EU (EMCD)

is declared with reference to the following harmonized standards:

• EN 60730-2-9

06-2017

4 5 4 5

Setpoint = programmed setpoint Setpoint = programmed setpont -3°C

When the battery is almost depleted, the yellow LED turns on for half a second

every 10 seconds. In this condition it is necessary to replace the batteries as

soon as possible.

Dispose of the batteries in the appropriate

recycling containers.

8 9

KEO-B BATTERY MOUNTING KEO-A MOUNTING

Bticino Living, Light, Light Tech, Livinglight, Axolute series

Vimar Eikon, Eikon Evo, Plana series

Ave S44 series – ABB Mylos series

Gewiss Chorus series

Bticino Livinglight AIR series

ABB Chiara series

Vimar Arké series

Bticino Matix series

Bticino Axolute AIR series

Remove the cogs Remove the cogs

Bticino Axolute AIR series

Bticino Matix series

ABB Chiara series

Vimar Arké series

Bticino Livinglight AIR series

Gewiss Chorus series

Bticino Living, Light, Light Tech, Livinglight, Axolute series

Vimar Eikon, Eikon Evo, Plana series

Ave S44 series – ABB Mylos series

Remove the cogs Remove the cogs

VI*

AIR

AXO AIR

VI*

* 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. AXO AIR mount not included in the package

* 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. AXO AIR mount not included in the package

*Note: only for installing the Vimar Idea series

cover plate, use the side plastic elements VI.

*Note: only for installing the Vimar Idea series

cover plate, use the side plastic elements VI.

Produktspezifikationen

Marke:	Vemer
Kategorie:	Thermostat
Modell:	Keo-A

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