Installation

& Operating

Instructions

THESE INSTRUCTIONSTO BE RETAINEDBY USER

OpenThermProgrammable room thermostat

This combined control RFT & OTR (trans-mitter & receiver) is for use only with the following Vokera appliances:

• Unica HE• Linea 28HE*,32HE*,36HE*• Mynute HE• Mynute VHE

*Requires wiring kit

This combined control must not be used orconnected to any other appliance. Thisapparatus must only be installed by a competent person.

This control is comprised of a battery opera-ted transmitter (RFT) and a wired receiver(OTR); the transmitter can be located withinany heated area* of the dwelling whilst thereceiver must be connected to the boiler**.

* The transmitter can be located up to 25-metres from the receiver and must be located in an area that is directly heated by the boiler

**The receiver must be connected to the boiler’s Open-therm connections (see installation booklet) and be sited no more than 1-metre from the boiler

These instructions must be read in conjunc-tion with the appliance installation booklet.

Isolate the appliance from the electrical sup-ply and remove the appliance casing. Locateand remove the PCB cover that contains theOpentherm terminals.

Remove the cover from the receiver andusing a suitable piece of 2-core flex, connectthe receiver to the Opentherm terminals ofthe appliance and refit the PCB cover andappliance casing.

NOTEThe receiver can be mounted on a wall adja-cent to the appliance.

The combined control (transmitter & recei-ver) are coded and paired during the finalproduction test; it’s therefore not necessaryto pair the unit at the point of installation orfirst-use. However if the transmitter/receiverhas been reset or either component (trans-mitter/receiver) is to be used with a replace-ment/different unit, it will be necessary to re-code and pair the new combination.

Ensure the transmitter has been set/left inthe coding mode (menu > service > coding> OK) and press button B on the receiver forapproximately 5-seconds, LED A will light upbriefly. Press ESC to escape from the co-ding mode.

SPECIFIED USE

WARNING

2.0 PAIRING/CODING OF THE RECEIVER WITH THE TRANSMITTER

1.0 INSTALLATION OF THE RECEIVER

A

C

B5 4 3 2 1

A. LEDB. Coding buttonC. Field strength indicator

iESCRES

PARTY · ECO

MENU

+

–

OK

3 4 5 6 721

Receiver

Transmitter

1

To check that the coding is active or hasbeen successful, go back into the codingmode for the transmitter (menu > service> coding), when you press OK the LED Awill light up briefly to confirm that the recei-ver is now paired with the transmitter.

To check that the receiver is picking up asignal from the transmitter, enter into themenu: Menu > Service > Test HF.

A test signal will be sent for a period of 15-minutes from the transmitter to the receiverevery 5-seconds. In turn, at least one signalstrength indicator LED should light up; thestrength of signal is indicated by the quantityof LED’s that are illuminated.

Place the transmitter in a room or locationthat enables optimum signalling.To cancel the signal strength test, pressESC at any time.

Should it be necessary to cancel or reset thecurrent coding/pairing of the receiver with arespective transmitter, press button B for

10-seconds. The LED will illuminate for 3-seconds before going out.

The transmitter (RFT) is powered by 2 x AAbatteries and these should last approximate-ly 1.5-years.

The transmitter can be wall-mounted or canleft on a desktop or table-top using the free-standing support (supplied).

Remove the battery compartment cover andinsert 2 x AA batteries within 10-minutes toensure any memorised program or setting ismaintained.

The transmitter (RFT) and receiver (OTR)have been coded and paired with each otherduring the final production test at the factory.However if either of the components havebeen reset or is a replacement unit it will benecessary to code and pair the RFT with theOTR (see section 2.0)

Hinged cover

Display of the day of week(1 = Monday, 2 = Tuesday etc.)

Multifunctional display, e.g.“Room temperature 20.0˚C”

Display PARTY- orECO program active

Display for batteries to be replaced

Display of the switch phases

RESET button

Icon bar for display of theprogramming level (rotary switchposition MENU)

Change buttons +/–

Rotary switch for program selection

Button OK (confirmation of setting/selection or programming)

Button ESC (cancellation of pro-gramming entries)

Info button for checking the set-tings

Battery compartementTo open, pull towards the front

Symbol appears during a radio transmission

2.1 SIGNAL STRENGTH TEST

2.2 CODING RESET

3.0 TRANSMITTER OVERVIEW AND SETUP

3.1 INSERTING/REPLACING BATERIES

3.2 INITIAL SETUP

2

Once the batteries have been inserted intothe battery compartment and the OTR hasbeen connected to the boiler, the transmittercan be mounted/located and programmedfor use.

The RFT can be mounted on any wall withinthe dwelling or can be table/desk locatedusing the stand provided.

To ensure optimum performance, it’s prefe-rable to carry out a signal strength test (sec-tion 2.1) before deciding on a final location.Ideally, for wall mounted applications, theunit should be positioned 1.5-metres fromthe floor level.

Avoid areas such as near or above firepla-ces, televisions, windows, or radiators thatprovide artificial room temperature conditi-ons.

For wall-mounting applications, detach theback-plate from the RFT by inserting a smallflat bladed screwdriver on the bottom under-side of the unit.

Use a combination of suitable mountingholes on the back-plate to secure the back-

plate to the wall at a height of 1.5-metresfrom the floor.

Once the unit is powered via the batteries,the display is active and the default settingsare enabled.

PROGRAMMING PROCEDURERotate the program selector to the MENUposition, using the �� buttons you canscroll through the main menu:• TARGET TEMP• SERVICE• HOLIDAY• PROGRAM P3• CLOCK/DATE

3.4.1 TARGET TEMP MENUUsing the programming procedure, scrollthrough the main menu until TARGET TEMPis displayed; press the OK button to selectthe sub menu:• COMFORT – temperature required when

the heating is ON• LOWER – temperature required when the

heating is OFF• FROST – setting level when the program

selector is in the frost protection mode or the HOLIDAY function has been enabled

Use the �� buttons to select the desiredtemperature/s and press OK to confirm orESC to cancel any changes.

3.4.2 SERVICE MENUUsing the programming procedure, scrollthrough the main menu until SERVICE isdisplayed; press the OK button to select thesub menu; use the �� buttons to select thedesired function:• HW IMMEDIATE• CODING• TEST RF• CONTROL• WALL COMP• OPTIMISATION• DISPLAY• HOT WATER• LANGUAGE

3.3 MOUNTING/LOCATION

3.4 MENUS AND SUB-MENUS

Wall mounting

Free-standing

3

See section 5.0 for more detailed informati-on on the SERVICE functions.

3.4.3 HOLIDAY MENUUsing the programming procedure, scrollthrough the main menu until HOLIDAY isdisplayed; press the OK button to select thesub menu; use the �� buttons to program:• START HOLIDAY – the date and time

when you want the holiday period to begin• END HOLIDAY – the date and time when

you want the holiday period to end• FROST SETTING – the operating tempera-

ture that is active during the holiday period • CHECK – used to check the above pro-

grammed details• CLEAR – used to clear or cancel the

holiday settings or activity.

3.4.4 PROGRAM P3 MENUUsing the programming procedure, scrollthrough the main menu until PROGRAM P3is displayed; press the OK button to selectthe sub menu; use the �� buttons to selectthe desired function:• HEATING – programme your own individual

ON/OFF times for the central heating• HOT WATER – programme your own in-

dividual ON/OFF times for hot water

See section 4.0 for more detailed informa-tion on the PROGRAM P3 functions.

3.4.5 CLOCK/DATE MENUUsing the programming procedure, scrollthrough the main menu until CLOCK/DATEis displayed; press the OK button to chan-ge/review; use the �� buttons to change/amend the date and time as follows:

The selector can be positioned to enable thevarious modes of operation as well as theMENU position.P3 – move the program selector to this posi-tion if you want to use your own specific pro-gramme for heating and hot water (see 4.0)P2 – is a fixed programme; comfort tempe-rature is active during Mon - Fri 6 - 8 am, 4 -10 pm, and Sat - Sun 7 am - 11 pm. Thelower temperature is active at all other timesP1 – is a fixed programme; comfort tempe-rature is active during Mon - Fri 6 am - 10pm, and Sat - Sun 7 am - 11 pm. The lowertemperature is active at all other times

- Comfort temperature setting: when theselector is in this position, the room tempe-rature is permanently maintained at thecomfort value

- Lower temperature setting: when theselector is in this position, the room tempe-rature is permanently maintained at thelower value

- Frost protection setting: when the se-lector is in this position, the room temperatu-re is permanently maintained at the frostprotection value

With the INFO button, you can check/displaythe following:• Current room temperature• Target room temperature• Required hot water temperature• Date and time• Current operating mode• Current display mode• Switching times of the current program

(only visible when the hinged cover is open)

1. The display shows the time setting.

2. Set the current time with the buttonsand :

Set the hour and confirm with the OKbutton.

Set the minutes and confirm with theOK button.

Hour

0:00

OKHour

15:00

OKMinute

15:34

With the ESC button you can always returnto the previous programmming step in orderto adjust a setting.

1. The display shows the time setting.

2. Set the current time with the buttons▲ and ▼:

Set the hour and confirm with the OK button.

Set the minutes and confirm with the OK button.

OKYear

2002

Month

04OK

Day

09.04OK

3. The display changes automatically to the date setting.Set the year, month and date one after the other. Confirm each set-ting with the OK button. The dis-play changes automatically.

3.5 PROGRAM SELECTOR

3.6 INFO BUTTON

4

By using the �� buttons, you can tempora-rily alter the target temperature (up or down)until the next temperature change, e.g. fromComfort to lower.• Press either of the �� buttons to display

the current target temperature• Continually press the � button to increase

the target temperature, or the � button to decrease the target temperature until the required temporary value is displayed

• After 3-seconds, the display will automati-cally return to its original state and the thermostat will regulate to the new tempo-rary value

• When the selector is in either of the perma-nent Comfort – Lower – Frost settings, the temporary target temperature is main-tained until the selector is moved or a new temporary value is chosen.

With the party/eco function you can tempo-rarily change the set temperature profile upto a maximum period of 23-hours and 50-minutes.• Press and hold both �� buttons simulta-

neously for 2-seconds• The display changes and shows PERIOD

and a flashing clock; within the 3-seconds press either �� button to move the dis-play to the required time period (increments of 10-minutes).

• After 3-seconds, the display changes and shows flashing text COMFORT or LOWER.

If necessary, use the �� buttons to chan-ge the display to show COMFORT or LOWER in order to select the preferred temperature regime for the set period.

• The display changes automatically after 3-seconds to show the desired temperature regime ECO (lower) or PARTY (comfort); the party/eco program is now active for the period selected.

• The party/eco function can be cancelled bypressing and holding both �� buttons simultaneously for 2-seconds and then waitfor 3-seconds; the display will revert to nor-mal and the party or eco function will be cancelled.

To program bespoke time settings for theheating and hot water proceed as follows:

STEP-1:Rotate the selector to the MENU setting andselect PROGRAM P3 and then select NEWfrom the sub-menu

MENU

TARGET TEMP

Service

Holiday

PROGRAM

Clock/Date OK

New

Check

Clear

End

5.3.2 Creating a new temperature profile P3

HOUR

16:00

MINUTE

16:30

New Free

21

Mo-Fr

Sa/Su

Daily

3 sec.

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

Lower

Comfort

END

Single day

Display of the freememory areas

OK

OKOKOKOK

OK

3 sec.

back to NEW

OK

STEP-2: Select the day or group of days that are to be programmed and then select the time periods

Display of the freememory areas

back to

3.8 PARTY/ECO PROGRAM

4.0 PROGRAMMING

3.7 TEMPORARY ADJUSTMENT OF THE TARGET TEMPERATURE

5

5.3.3 Checking the temperature profile P3

By pressing theOK or button, allswitch times of the day are dis-played one after the other. Oncethe last switch time is reached, theswitch times of the next day are dis-played etc.

CHECK

7654321

PROG

6 :000 3 6 9 12 15 18 21 24h

21 . 0 CEND

3 sec.

Emptyno program stored in memory

back toProgram

see 5.3.1

OK

OK

back toProgram

see 5.3.1

no program stored in memory

By pressing the OK or ▲ button, allswitch times of the day are displayedone after the other. Once the last switchtime is reached, the switch times of thenext day are displayed etc.

back to

back to

STEP-3: You can confirm time settings via the sub-menu

STEP-4: You can clear time settings via the sub-menu

5.3.4 Clearing the temperature profile

CLEAR Single All END back to Single

see5.3.5

see5.3.6

OK

back to

5.3.5 Displaying individual switch times and clearing them

5.3.6 Clearing all switch times

The switch times are dis-played one after the other.Display next switch timewith .

Single

Empty

7654321

PROG

6 :000 3 6 9 12 15 18 21 24h

21 . 0 C

no program stored in memory

7654321

PROG

6 :000 3 6 9 12 15 18 21 24h

Loeschen

END

The switch time iscleared and the nextswitch time is displayed.

3 sec.

Display of the switch time

In order to clear thedisplayed switch time,press the OK button.

OK

back toProgram

see 5.3.1

OKback toProgram

see 5.3.1

OK OK

1. Displaying the switchtimes

2. Clearing the desiredswitch times Clear

All

Emptyno program stored in memory

Confirm

In order to cancel theclearing process, pressthe ESC button.

back toProgram

see 5.3.1

OK OK

OK

back toProgram

see 5.3.1

Displaying individual switch times and clearing them

Displaying the switch times

Clearing the desiredswitch times

Clearing all switch times

no program stored in memory

In order to clear the dis-played switch time, pressthe OK button.

The switch time is clearedand the next switch time is displayed.

The switch times are displayedone after the other. Displaynext switch time with ▲.

no program stored in memory

back to

back to

back to

back to

In order to cancel the clearingprocess, press the ESC button.

6

Using the programming procedure, scrollthrough the main menu until SERVICE isdisplayed; press the OK button to select thesub menu; use the �� buttons to select thedesired function:• HW IMMEDIATE• CODING• TEST RF• CONTROL• WALL COMP• OPTIMISATION• DISPLAY• HOT WATER• LANGUAGE

With this function, household water can beheated and enabled once, regardless of thetimes set in the program.

Setting with the buttons � or �. Confirmthe value with OK (cancel with ESC).

This function is used to ‘pair’ the transmitterwith the receiver. Transmitter and receiverare already ‘paired’ at the factory so duringnormal installation and use, it’s not necessa-ry to carry out this function; see section 2 formore detailed information.

See section 2.1

Characteristics of the PD controllerWith suitable heating systems the PD con-troller is characterized by a short settingtime, scarce maximum overshooting andtherefore a high control accuracy.Characteristics of a hysteresis controllerWith over or under engineered heating sys-tems a hysteresis controller is characterizedby scarce shift frequency and small tempe-rature deviations.

If required, the transmitter can be calibratedto account for temperature differentials bet-ween the mounting location (wall) and theambient room temperature, e.g. if the trans-mitter is located on a wall that is an externalwall of the dwelling.

Example: The difference between the mea-sured and the controlled temperature is 2 °C,i.e. the room temperature is regulated 2 °Ctoo high: Offset value –2 °C.

MENU

TARGET TEMP

Service

Holiday

PROGRAM

Clock/Date

OK

Display

Language

Wall comp

Control

End

see 5.4.2see 5.4.3see 5.4.4see 5.4.5

test hf

coding

Wall comp Wall comp

0.0oCOK OK

5.0 SERVICE MENU

5.1 HW IMMEDIATE

5.4 CONTROL

5.5 WALL COMP

5.2 CODING

5.3 TEST RF

WW-SOFORTOK

AUSEIN EINSTELLUNGENhw immediate settingsoffon

OK

Control Hyst control Pd control END

Amplitude

0.2oC

Period

10

Hysteresis

0.3oC

Offset

0.3oC

Set with buttonsor :

0.2°C ... 5.0°C

5 ... 30

0.1°C ... 0.2°C

END

or autom.after 6 sec.

OK

OK

OK

OK OK

OK

OK

OK

back toService

see 5.4.1

Set with buttonsor :

0.2°C ... 1.0°C

5 … 30

0.1 °C ...0.2 °C

Set with buttons▲ or ▼:0.2 °C ...5.0 °C

back to

or autom.after 6 sec.

see 5.4.1

Set with buttons▲ or ▼:0.2 °C ...1.0 °C

7

Offset value adjustable from –3 °C ... +3 °C.Setting with ▲ or ▼. Confirm the value withOK. Cancel with ESC.

The optimal start function – when enabled –starts the boiler (prior to the timed ON pe-riod) in order to have the room at the com-fort temperature level when the Timed ONperiod begins.

The optimal start function can be set from 0-minutes (optimisation is disabled) up to 60-minutes. The unit measures the temperaturedifferential between the actual (room) tem-perature and the target – comfort – tempera-ture and starts the boiler the set period ofminutes for each degree of differential thatexists.

Example:• Optimisation is set at 10-minutes• ON (comfort) period begins at 6:00 am• Temperature differential (between actual 18 °C and comfort setting 21 °C) is 3-degrees

• Therefore 3 x 10 = 30-minutes• Boiler is started at 5:30 am to ensure room

is at comfort level for 6:00 am

The normal display can be changed to showdifferent information.

Select the display type with the button ▲ or▼. Confirm with the OK button. Cancel with ESC.Note: The factory stetting is highlighted greyin the table.

You can choose to have the unit managethe timed settings of the hot water function,or both time settings and outlet temperature.

The following languages can be selected viathe LANGUAGE function:• English• German (Deutsch)• Italian (Italiano)• Portugese (Portugues)• Dutch (NL)• Spanish (Espanol)• French (Francais)

Rotary switch positionP1, P2 or P3

Rotary switch position

Display type Display type

1 2 3 4 5 1 2 3 4 5

Time T T N N

Target temp. N N T N N

Actual temp. N N T N N

Program name T T T T T

Table: Overview of the information shown in the display for differentdisplay types.

7654321

PROG

6 :000 3 6 9 12 15 18 21 24h

21 . 0 C T = text line

N = numerical display

T = text line

N = numerical display

Table: Overview of the information shown in the display fordifferent displays types.

Language

Francais

English

Deutsch

NL

Espanol

Italiano

Select the language with the buttons or .Confirm with the OK button. Cancel with ESC.

OK

back toService

see 5.4.1OK

back to

Select the language with the buttons ▲ or ▼. Confirm with the OK button. Cancel with ESC.

hot

water hw time only

hw time/temp

Display Display

3OK OK

5.6 OPTIMISATION

5.8 HOT WATER

5.9 LANGUAGE

5.7 DISPLAY

8

See example below

Reset button >

Time: 12:00Date: reset Holiday program: clear (See 4.0 Step 4 to clear all programs)

Control type: RS type 1 acc. to EN 60730-1:1991

Accuracy: ± 1 sec. per day at 20 °CControl accuracy: ± 0.2 KTemperature meas. range:

O °C to 50 °C, resolution 0.1 °C

Temperature setting range: 6 °C to 30 °C in increments of 0.2 °C

Control period: 5 to 30 min. (PD control)

Control lock-in range: ± 0.2 K to ± 5 K (PD control)

Switching hysteresis: ± 0.2 K to ± 1 0 K (hysteresis control)

Memory spaces: 32 temperature changes, programmable for Mo-Fr, Sa-Su, each day or for individual days

Class of protection: III according to EN 60730-1

Type of enclosure: IP 20 according to EN 60529-1

Batteries: 2 x alkaline batteries 1.5 V, type AA

Power reserve during battery emplacement:10 minutes

5.5 Time/Date and Summer/Winter Time

OK

MENU

Service

TARGET TEMP

CLOCK/DATE

PROGRAM

HOLIDAY

Hour Day With s/w

OK

USA/CAN

SF/GR/TR

Gb/P

Europe

OK

OK

END

End

No su/wi

Free

OK

Setting the time and date:hour, minute, year, month, day.Description see page 18.

Month su

03:01 OK

Week su

03:02

Hour

02:00

Month wi

10:00OK OK

Week wi

10:02OK

OK

END

back toClock/Date

Start of summer time:

Month Weekend withinmonth

Hour for changeover:e.g. from 2 a.m. to3 a.m.

Start of winter time:

Month Weekend within month

OK

Note: Time for changeover to winter time is takenfrom summer time, e.g. back from 3 a.m. to 2 a.m.

OK

3 sec.

Time/Date and Summer/Winter Time

Setting the time and date:hour, minute, year, month, day.Description see chap. 4.3.

Start of summer time:Month Weekend within

monthWeekend within monthHour for changeover:

e.g. from 2 a.m. to 3 a. m.

Start of winter time:Month

Note: Time for changeover to winter time is taken from sum-mer time, e.g. back from 3 a.m. to 2 a.m.

back to

7.0 RESET

8.0 TECHNICAL SPECIFICATION

6.0 TIME – DATE – SUMMER/WINTER TIME

9

With the exception of a regular replacementof the batteries for the transmitter, the roomthermostats are maintenance-free.

Only clean the device with a dry or slightlydamp, soft and lint-free cloth. The interior ofthe device must remain free from water.Replace the two batteries at regular intervalsevery 1.5 years. Only use new 1.5 V batte-ries of the type AA, Alkaline. Never mix oldand new batteries, as old batteries can leak.

Disposal of Batteries

Used batteries must be disposed of accor-ding to the national regulations with regardto the environment (e.g. at special batterycollection outlets). Never throw used batte-ries out with your usual rubbish.

Disposal of the Device

At the end of its life, the room thermostatmust be dismounted professionally and dis-posed of according to the national regulati-ons with regard to the environment.

In case of doubts, please contact the manu-facturer’s representative in your country.

9.0 MAINTENANCE

10.0 DISPOSAL

10

Registered address:Vokèra Ltd

Borderlake HouseUnit 7 Riverside Industrial Estate

London ColneyHerts AL2 1HG

enquiries@vokera.co.uk

www.vokera.co.ukwww.vokera.ie

Sales, General EnquiresT 0844 391 099

F 0844 391 0998

Vokèra IrelandWest Court, Callan

Co KilkennyT 056 7755057F 056 7755060

Vokèra Limited reserve the right to changespecification without prior notice

Consumers statutory rights are not affected.

A Riello Group Company.Company Reg No: 1047779