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CHRONOS KEY Programmable Thermostat User Manual

BACKLIGHT MANAGEMENT

The programmable thermostats of the Chronos Key series have a LED backlit display
with led. There are some differences between battery powered models and mains
powered models.

Chronos Key battery models

In battery-powered models the backlighting display is normally OFF and it is actived
(blue color) just pressing a key or after the programming menu.

Chronos Key models 230 Vac

In the 230 Vac power supplied models the display backlighting is normally ON.

Backlighting switching OFF
If not desired the backlighting function can be disabled (for example in

bedrooms). Then the thermostat continues its normal operation and the the
backlighting is actived just pressing a key or after the programming menu.

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Summary of Contents for Chronos Key

Page 1: ...Cronotermostato Digitale CHRONOS KEY Manuale d Uso User Manual DIGITAL PROGRAMMABLE THERMOSTAT ...

Page 2: ...fication Page 12 Temperatures T1 T2 T3 modification Page 14 Timing setting Page 16 Advanced functions menu Page 17 Manual operation Page 21 Off operation Page 22 Backlight management Page 24 Minimum and maximum value Page 25 Summer time change Page 25 Regulation type Page 27 Timings what they are Page 29 Instrument reset Page 31 Battery replacement Page 31 Reference standards Page 32 Default value...

Page 3: ...S KEY Summer and winter operating mode Models available in white and black colours Battery or 230 V power supply 7 programs available for the heating mode 7 programs available for cooling mode Wall mounted or covered installation of box 503 Weekly programming with 3 different settable temperatures ...

Page 4: ...ey 230 Nero Chronos Key Bianco Chronos Key Nero Power supply 230Vac 50 60 Hz batteries 2 x 1 5V type AAA Display blue backlight can be switched off blue backlight activated with a key touch for 30 seconds Digital input Configurable as input for external probe or phone dialler Installation Wall mounting or to cover three module built in box ...

Page 5: ...CTION DIAGRAM COM NA NC N L 230V M NA NC CONTATTO ESTERNO COM NA NC N L 230V COM NA NC EXTERNAL CONTACT Thalos 230 Thalos With external contact closed Setpoint Setpoint programmed 3 C CONTATTO CESTERNO se contatto esterno chiuso Chronos spento Chronos Key 230 Chronos Key AUX ...

Page 6: ...s must be present for Chronos Key 230 models only Code Model Description VE725800 Chronos Key Bianco Programmable thermostat with battery in white VE726600 Chronos Key Nero Programmable thermostat with battery in black VE727400 Chronos Key 230 Bianco Programmable thermostat 230 V in white VE728200 Chronos Key 230 Nero Programmable thermostat 230 V in black SAFETY WARNINGS Electronic touch screen p...

Page 7: ...y 5A 250 Vac 2 terminals for 1 5 mm2 cable section for power supply Temperature regulation On off with hysteresis setting between 0 1 C and 1 C Proportional with settable band and period Summer winter operating mode Weekly programming 7 programs available for each operating mode Daily resolution 1 hour possibility to set delay activation of 15 30 45 minutes independent for each hour 5 settable tem...

Page 8: ...peratures setting T1 T2 T3 timing menu advanced programming menu not used not used Time and minutes Load activation in summer mode cooling Manual operation activation Load activation in winter mode heating Measured environment temperature Graphic of the active program for the current date in automatic operation Off operation Measured temperature of the external probe DISPLAY AND KEYPAD ...

Page 9: ...tep in this user manual Multipurpose keys are not built into the instrument that is to say contemporary pressures of 2 or more keys There are two types of pressure brief pressures long pressures with duration higher than 3 seconds During the press of a key the display is blue Cleaning the display To clean the display use a soft lint free cloth without using excess force ...

Page 10: ... keep away from direct sunlight far from doors windows heat sources locations with excess or total lack of ventilation Connect the wires to the terminal blocks of the base as shown in the connection diagram Fix the base on the wall using the screws supplied Only for battery power supply models only insert the batteries into the battery compartment on the back of the programmable thermostat respect...

Page 11: ...e following seconds only synchronisation at value 00 minutes hours year month day Use the keys and to increase and decrease the values and the key to confirm and move to the next parameter Seconds synchronisation Minutes setting Time setting Year setting Month setting Day setting Once all values are set press the key for a long time to exit the menu of the clock synchronisation ...

Page 12: ...able thermostat requires the time and date insertion If once mains powered no value is set within about 30 seconds the programmable thermostat begins to operate in off mode displayed with the symbol The time lack is displayed with flashing dashes _ _ _ _ The programmable thermostat stays in off operation condition until the hour is not inserted ensuring the maintenance of the antifreeze temperatur...

Page 13: ...conds it is possible only the synchronisatin at value 00 4 Once all parameters are set to exit and to go back to the programming menu press the key for a short time To exit and to go back to the normal operation automatic manual press the key for a long time or wait for the time out expiration about 30 seconds Inside this menu it is also possible to modify the parameters for winter summer time cha...

Page 14: ...ification 3 The programs page is displayed the first day of the week DAY 1 flashing the current program for example P1 of the current operating mode or and the corresponded profile of the program 3 1 If the set program is good move to the next day with the keys and 3 2 If the set program is not good press the key The set program flashes choose a different program among the 7 available programs pre...

Page 15: ... with the keys and the delay and press the key to move to the next hour 4 When the program satisfies the user s needs go back to the day pressing twice the key and repeat the operation for the other days of the week When all modifications have been performed exit the programming menu pressing the key for a long time Temperatures T1 T2 T3 modification To modify the 3 temperatures of automatic opera...

Page 16: ...fication of T3 5 The value of the flashing T3 temperature is displayed Modify the value with the keys and and press the key to go back to the page of T1 temperature 6 Once all parameters are set to exit and go back to the programming menu press the key for a short time To exit and go back to the normal operation press press the key for a long time or wait for the time out expiration about 30 secon...

Page 17: ...until the symbol starts flashing on field 2 2 Press the key for a short time until the symbol flashes and press the key to enter the parameters modification 3 The value of the set timing currently flashes 00 no timing Enter the timing value from 1 to 99 with the keys and and press the key to move to the measurement unit change hours and days 4 The measurement unit starts flahing hour or day Press ...

Page 18: ... parameters operating mode heating or cooling regulation type on off or proportional parameters related to regulation type antifreeze temperature setting of an external supporting input selection of the control probe keypad lock by password system operation hours To enter the menu ADV 1 From the normal operation display press the key for a long time until the symbol starts flashing on field 2 2 Pr...

Page 19: ...about the operating mode see the chapter Regulation types on page 27 Regulation type only for heating mode For heating mode it is possible to choose between on off Reg 0 or proportional rEg P regulation For further information about regulation type see the chapter Regulation types on page 27 Regulation parameters In case of on off regulation the only parameter to set is the hysteresis dIF which ca...

Page 20: ...ermostat is switched off External supporting input settings only for battery powered models The programmable thermostat allows to connect a remote external temperature probe to display otherwise also to regulate the measured temperature where the probe is placed in or to connect a voltage free contact to the telephone activator connection in order to switch on off the remote programmable thermosta...

Page 21: ...ther probe Password for keypad lock It is possible to set a keypad lock if the programmable thermostat is installed in public places or however to prevent anyone from modifying the operation parameters To set a password enter on field PAs a value between 001 and 999 To deactivate the password press the key until ___ appears When the keypad is locked the thermostat performs all its functions using ...

Page 22: ...o move from the automatic to the manual operation 1 press the key for a short time In the field 7 the setpoint Tm currently set flashes 2 set the desired setpoint with the keys and and confirm with the key 3 now on field 7 the value of the environment temperature appears again and the instrument operates in manual mode To change the setpoint Tm press the key and repeat the points 2 and 3 To go bac...

Page 23: ...stems where the instrument is installed Toff can have values between 1 C and 10 C or it can be completely shut down in this case the maintenance of minimum temperature is not guaranteed The set default Toff is 6 C but it is possible to modify this value entering the ADV menu see Antifreeze temperature page 19 To switch the instrument off press the key until the symbol is displayed field 9 To react...

Page 24: ...mmable thermostat remotely by their own telephone The contact can have one of these two positions open à normal operation according to the settings closed à programmable thermostat in off mode Remote off status is displayed with the flash of the symbol on field 9 to differentiate it from the keypad off status fixed on field 9 Attention remote off status closed contact is more important than any ot...

Page 25: ...y powered models the backlighting display is normally OFF and it is actived blue color just pressing a key or after the programming menu Chronos Key models 230 Vac In the 230 Vac power supplied models the display backlighting is normally ON Backlighting switching OFF If not desired the backlighting function can be disabled for example in bedrooms Then the thermostat continues its normal operation ...

Page 26: ...ng the sunlight in the evening to the loss of the early morning In European countries summertime DST starts on the last Sunday of March and ends on the last Sunday of October The programmable thermostat manages the summer winter time change as follows increasing of one hour to move from winter time to summer time decreasing of one hour to move from summer time to winter time In off status the inst...

Page 27: ...r the passage to summer time is displayed indicated with the symbol For example a on Sunday 7 of the last week LA of March 03 at 2 AM 02 b if it is necessary change the parameters with the keys and and move to the next parameter with the key The sequence requires the insertion of i day 1 7 of the week ii week of the month first second third fourth last LA iii month 1 12 iv hour 5 press the key the...

Page 28: ...relay OFF Temperature increasing heating mode cooling mode where SET stands for the setpoint and DIFF stands for the hysteresis useful to avoid continuous switches on off dangerous for the system in proximity to the reaching of the setpoint Proportional regulation only for heating In heating mode the on off regulation is available and also the proportional regulation which in some systems allows a...

Page 29: ... it updates the activation and deactivation times for the new period The result of the proportional regulation is subordinated to the correct selection of the parameters Select the value of the regulation period as follows 10 for low thermal inertia systems fan coil 20 for medium thermal inertia systems aluminium radiators 30 for medium thermal inertia systems cast iron radiators Select the regula...

Page 30: ...g the temperature according to the antifreeze temperature if it has not been deactivated before Set again date time to go back to the normal operation programs modifications and settings are stored TIMINGS WHAT THEY ARE Timings allow to maintain the current operation automatic manual off for a certain period of time hours or days and after the programmable thermostat changes the operating mode as ...

Page 31: ...tion the timing is calculated in minutes for this reason if a timing of 3 days is set at 12 15 PM on Tuesday it will expire at 12 15 PM on Friday Attention timings can end before programmed expiration if one of these actions occur hour date modification modification of the summer time change included manual modification of the operating mode switching of digital input only for battery models chang...

Page 32: ...erve to avoid loosing date and hour settings On the contrary the performed programmings are stored even after this limit of time Attention after batteries replacement the display may switch on within 15 seconds at max Dispose of the used batteries observing the laws in force in relation to the disposal of hazardous waste INSTRUMENT RESET In case of erasing all performed settings and to turning bac...

Page 33: ...OS KEY Programmable Thermostat User Manual REFERENCE STANDARDS Compliance with Community Directives 2006 95 EC Low voltage 2004 108 EC E M C is declared in reference to the harmonized standard EN 60730 2 7 EN 60730 2 9 ...

Page 34: ...T3 summer T2 35 0 C 0 1 C 25 0 C antifreeze temperature 1 0 C 10 0 C 0 1 C 6 0 C operating mode winter summer winter regulation type ON OFF PROP ON OFF ON OFF hysteresis 0 1 C 1 0 C 0 1 C 0 3 C proportional band 0 5 C 5 0 C 0 1 C 0 5 C proportional period 10 30 10 10 password 0 999 1 000 deactivated winter hour meter 0 1 0 summer hour meter 0 1 0 summer hour meter enable ON OFF ON winter summer ti...

Page 35: ... 14 15 16 17 18 19 20 21 22 23 P3 T3 T2 T1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 P4 T3 T2 T1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 P5 T3 T2 T1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 P6 T3 T2 T1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 P7 T3 T2 T1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23...

Page 36: ... 14 15 16 17 18 19 20 21 22 23 P3 T3 T2 T1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 P4 T3 T2 T1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 P5 T3 T2 T1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 P6 T3 T2 T1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 P7 T3 T2 T1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23...

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Page 39: ...V3ISO0792 010 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 ...

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