Vemer KEO-B, KEO-A User Manual

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MKIS00745-010-EN

Mod. KEO-A

KEO-B

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

PACKAGE CONTENTS

thermostat

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

Covers

A mount

VI plastic elements

B mount

WIRING DIAGRAMS

Keo-A

1 2 3

Keo-B

1 2 3

COM

4 5

230V~

EXTERNAL

CONTACT

EXTERNAL

CONTACT

4 5

Setpoint = Programmed setpoint

4 5

Setpoint = - 3°C programmed setpoint

ADJUSTABLE PLATES

The adapters inside the box allow the mounting of the following plates:

ABB Chiara series ABB Mylos series Ave S44 series Bticino Axolute series Bticino Light series Bticino Light tech series

For information about the possibility to adapt the thermostat with different plates from those listed, contact the Technical Assistance Service.

* by mount you can buy on request (code VE470100)

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

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

INSTALL ATION

• 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 instrument 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 instrument and mount the cover and the white knob included in the package.

BM plastic

elements

ELECTRONIC THERMOSTATS

1 6

 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 (EN 6 0 730-1).

• Keo-B, with battery power supply and an input for the connection of an 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 instrument must be installed by a qualified person, in strict compliance with the connection diagrams.

2) Do not power or connect the instrument if any part of it is damaged.

3) After installation, inaccessibility to the connection terminals without appropriate tools must be guaranteed.

4) The instrument 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 mm – 2 terminals for 1.5 mm

• Terminals Keo-A:

– 3 terminals for 1.5 mm – 2 terminals for 1.5 mm

• 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

• Mechanism for instrument extraction of push-push type (batteries model only)

• Protection degree: IP40

• Insulation: reinforced among accessible parts (frontal) and all other terminals

• Mechanical locks on the knob to limit the setpoint

• Make the connections by respecting the diagrams described in this manual.

• Fix the instrument 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)

- 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 OF-ON-OFF type of the total duration of 3 seconds. Once finished the cycle the thermostat begins with the regulation.

cables for output relay 5A / 250 Vac

cables for digital input (3°C setpoint reduction)

cables for bistable output relay 5A / 250 Vac

cables for power supply

Regulation type setting

OPERATIONUser Manual

The choice of the operating logic occurs via selector switch placed on the front of the instrument. It’s possible to choose among 3 modes:

• cooling mode. Place the selector switch in position 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 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 is connected to a heating system. The output relay is activated when the environment temperature is lower than the set one.

The instrument 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 instrument. 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

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

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 instrument is on.

Change the position of the jumper when the instrument is supplied, as well as expose you to possible shock, so it is useless.

if the instrument

in case the system should be

if the instrument

(-0.3 +0.5) and 8 minutes time base

(-0.7 +0.8) and 15 minutes time base

Setpoint modificationOperating mode setting

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 instrument 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 MA X).

- 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.

Error probe signal

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.

Night reduction (for Keo-B only)

The Keo-B has an input to whom to connect an external contact (see wiring diagrams). With closed contact, the setpoint is reduced by 3°C than is set with the knob (in heating mode only).

Depleted batteries signal

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.

(for Keo-B only)

REFERENCE STANDARDS

Compliance with Community Directives 2006/95/EC (Low voltage) 2004/108/EC (E.M.C.) is declared with reference to the following harmonized standards:

• EN 60730-2-9

KEO-B BATTERY MOUNTING KEO-A MOUNTING

7 8

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

Vimar Eikon, Eikon Evo, Plana series

Ave S44 series – ABB Mylos series

ABB Chiara series Vimar Arké series

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

Vimar Eikon, Eikon Evo, Plana series

Ave S44 series – ABB Mylos series

ABB Chiara series Vimar Arké series

Remove the cogs

Gewiss Chorus series

Vimar Idea series

Remove the cogs

Bticino Matix series

AIR frame 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

Bticino Livinglight AIR series

AIR

Remove the cogs Remove the cogs