Manual Niko XX-781 (page 7 of 8) (English, German, Dutch, French)

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nv Niko sa Industriepark West 40, BE-9100 Sint-Niklaas, Belgium — tel. +32 3 778 90 00 — fax +32 3 777 71 20 — e-mail: support@Niko.be — www.niko.be PMXXX-78100R08171

XXX-78100 SENSOR (XX-781)

1 2 3 4 5 6 7

Prog.

21:0°C

�

1. DESCRIPTION

ThissensorispartoftheNikosensor/actorproductrange.Thisrangeoffersanumberofcomfortfunctionsin

combination with different switch functions.

XXX-78100: clock thermostat 45 x 45mm (XX-781 + transition frame)

Attention:suitableonlyforindoormounting!

Sensor (A) = the visible electronic component, available in all Niko flush mounting designs and colours, which,

eitherautomaticallyoraftermanualoperation,sendsaswitchcommandtotheconnectedactor.

Actor (B) = the built-in component, which, upon receipt of a command from the connected sensor, switches

the connected load or transmits a Nikobus telegram.

2. TECHNICAL DATA

•Tobeusedincombinationwithactor420-0010X (09-7X1) or 420-0020X (09-7X2)

•Day/weekprogramming

•Settingprecision:±0.5°C

•30minpowerreserveincaseofpowercut,theprogramremainsinmemory

•Manualoperationpossible

•Max.settingof24switchmovements

•3typesoftemperaturelevels:day,night,andantifreezelevel

•Timeortemperaturedisplaycanbesetpermanently

•6speedselections:infunctionofthedimensionsofthelocation(RPvalue)

•Installationinstructions:

 -mountingheight:±1,5m

- free air circulation

- not in direct sunlight

 -notdirectlyexposedtoaheatingelement

•Ambienttemperature:0->40°C

•Storagetemperature:-25->75°C

Theactorsmayswitchupto1Awhenusedincombinationwithatemperaturesensor.Ifahigherpower

isswitched, the heating of the actorwilldisturbthe proper operation of the temperature sensor.The

thermostat is designed to control the control valves or an input contact of the central heating.

3. OPERATION

Thethermostathas aninternalPIcontroland

controls the heating system with pulse width

modulation(PWM).Thethermostatwilldistrib-

uteits controlover variouscycles. Depending

on the temperature measured, it can in the next

cyclecontrolthecontactfor10to100percent

ofthecycle.Thelengthofafullcycledepends

on the RP value (see setting RP value).

During installation, the following must be

taken into account:

•responsetimesofthecontrolvalves.Theseusuallyhavearesponsetimeof0-100%in3minutes.

•coolingperiodoftheboiler.Useabypassifnecessary.

4. DISPLAY AND OPERATING KEYS

Keys Function

 increasesettemperature(insteps:pressbriefly;scrolling:presslong)

 decreasesettemperature(insteps:pressbriefly;scrolling:presslong)

 selecttheweekday

 displayingandconfirmingcurrenttime

programming

 displayingcurrenttemperature

 RESET(Donotpressthispushbuttonwithsharp,metalobjects)

Thebuttons

and areintendedonlyforthefirstuseorfortheprogrammingoftheclockthermostat.

current weekday menu

1 = Monday programming

time setting

setting the temperature

level menu

heating

temperature level indication: memory location active

sun = day temperature level

moon = night temperature level manual operation

ice crystal = antifreeze temperature level active

5. CONFIGURATION

Ifnooperationiscarriedoutduring30s.,thethermostatwillreturnautomaticallytothestartingscreen.After

±10min,theclockthermostatdisplaysthecorrecttemperature.

Basic settings

ThebasicsettingsalwayshavetobesetwhenusingthethermostatforthefirsttimeorafteraRESET.The

basicsettingsare:currentweekdayandhour,theRPvaluewhichdependsonthespaceandtheregulation

valueforday,nightandantifreezetemperature.

A. Setting the weekday and hour

WhenswitchingonthevoltageforthefirsttimeorafteraRESET,allsymbolsandsegmentsbrieflyappearon

thedisplay.Ifnohourisstored,theunitautomaticallydisplaysthesettingofthehourandweekdaymode.Time

andweekdayblink,youcanimmediatelygotostep2.

Step Action Result

Press for 3s

to activate mode for setting hour

andweekday.

Timeandweekdayblink.

Press

tosetweekday.

1=Monday,2=Tuesday…

Press

or to set the time.

•pressbriefly:settingoftheminutes

•presslong:phasesof5min,afterwardsbyhour

Press again

Return to starting screen

B. Setting the RP value

Notallheatinginstallationsreactatthesamespeed.Forthisreason,theswitchingon/offsequenceoftheinstal-

lationhastobeadaptedtothelocalcircumstances(regulationperiod).ThisisdonethroughtheRPvalue.

Theunit isprovided with6RP values,starting withRP1 forsmallareas (fastregulationperiod) upto and

includingRP6forlargeareas(slowregulationperiod).

RP value Minutes Application

 1 4 smallrooms,electricalheating4...6°C/hour

2 8

3 12

 4 16

5 20

 6 24 largerooms,underfloorheating1...2°C/hour

Step Action Result

Press

and simultaneously.

Unit switches to RP setting.

Press

or to set RP value.

RP1;RP2;…;RP6

Press

Return to starting screen

C. Setting the temperature levels

Thetemperaturelevelsbelowarethestandardsettings.

Temperature level Symbol Standard setting Setting range

Day Sun +20°C betweennightleveland+30°C

Night Moon +15°C between+7°Canddaylevel

Antifreeze Icecrystal +7°C Fix value, cannot be set

Thesettingsofthedayandnightlevelcanbemodifiedasfollows:

Step Action Result

Press for 3s

Unit switches to programming.

Press

toselectdayornighttemperaturelevel.

Sunormoonappearontheleftsideofthedisplay.

Press

or .

Increase/decreasetemperatureby0.5°C.

Press

Return to starting screen

D. Setting the offset value

Therearecertainfactorsthatcanaffectthetemperaturemeasurement.Therecanbeadifferencebetween

thetemperaturestatedonthethermostatandtheactualtemperatureintheroom.Tocorrectthisdifference,

proceed as follows:

Waitforatleast10min,sothetemperaturestatedontheclockthermostatissteady.Thenreadthetempera-

ture in the room from a thermometer. If the temperature stated on the thermostat is lower / higher than the

temperaturestatedonthetermometer,youhavetosetapositiveresp.negativeoffsetvalue.Thisway,youcan

adjustthetemperaturefrom-6°Cto+6°C.

NOTE:toguaranteeasteadytemperature,settheoffsetvaluewhentakingthethermostatintouse.Thefabric

setting is 0.

Step Action Result

Press

, and simultaneously.

Devicewillgototheoffsetsetting.(indicationonthescreen:POd)

Press

or .

Increase/decreaseoffsetby0,5°C.

Press

Return to starting screen

Theoffsetvaluecanbesettoavaluebetween-6°Cbelowand+6°Cabovethestandardsetting.

6. USAGE

A. Setting the temperature manually (manual mode)

Itisalwayspossibleto change the temperature manually ifyouwishto deviate from the set temperature

level.Amanualactionisindicatedbyablinking‘handsymbol’onthedisplay.Atthesametime,thesymbol

‘thermometer’fortheindicationofthetemperatureleveldisappears.Afterafewseconds,theactualroom

temperatureisagaindisplayed.

Step Action Result

Press

or to increase/decrease temperature.

Desired temperature blinks.

Press

to confirm.

Return to starting screen, the current temperature

isdisplayed.

T°

20°C

19°C

18°C

RELAY ON

100%

Cycle 1 Cycle 2 Cycle 3 Cycle 4 Cycle ...

100% 50% 30% 10% 10%

10A

R,L,C

420-0010X (09-7X1)

XXX-78100 (XX-781)

R,L

420-0020X (09-7X2)

EXT1

20 : 0° C

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Niko XX-781 Manual

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