Operating Instructions
Contents
1. is displayed for a short time AUTOMATI C The currently active operating mode is then shown flashing on the display Set the desired operating mode by turning the rotary pushbutton RED i MEA i LNG for example RED HEATING i a Tap the rotary pushbutton to confirm the setting 1 The operating mode Summer can not be selected when each heating circuit is set up separately 12 4 204 764 00 11 07 Heating system control Operating mode AUTOMATIC e SUMMER HEATING e RED HEATING i STANDBY Function Automatic control mode according to the heating times set in the 1 switching time program Factory setting Heating 06 00 22 00 Reduced heating 22 00 06 00 Domestic hot water 05 00 22 00 Only domestic hot water mode Domestic hot water is produced at the times set in the switching time program for showering etc Factory setting for domestic hot water Info 05 00 22 00 Operating mode Summer can not be Frost protection is active selected if each heating circuit is set up separately Continuous heating mode The room temperature is not reduced during the night DHW is produced at the times set in the time program Continuous reduced heating mode The rooms are continuously heated at the ROOM NIGHT temperature setting No heating mode Heating system is switched off There is no heating and no domestic hot water is produce2. con firm the settings and to open the basic display 4 204 764 00 11 07 Heating system control Reloading the standard switching time program Deleting the own time program With this function you can reload all the factory settings MO 16 AUG 04 1400 625 Basic display Press and hold the rotary pushbutton for 3 seconds I TN Ee h aai AM TIMEPROGRAMS is shown flashing on the display Tap to confirm TI MEPROGRAMS IIZ ne The note HC is also shown flashing on the display Keep turning until Default time appears l l DEFAULT TI ME Default time is shown flashing on the display Tap to confirm DEFAULT TI ME The note HC appears on the display N H Select the desired heating circuit by turning the rotary pushbutton 27 Heating system control 4 204 764 00 11 07 Tap to confirm RESET Reset HC appears on the display HC Press and hold the rotary pushbutton for 3 seconds RESET OK After completing all the changes tap the operating mode key to con firm the settings and open the basic display Reset OK is displayed to confirm 28 4 204 764 00 11 07 Heating system control Alarm messages FLOW Example for sensor alarm messages short circuit or interruption ERROR 12 0 Error c
3. selected hot water temperature is shown flashing on the display Tap the Domestic hot water temperature key to confirm the tempe rature setpoint Outside the time periods during which the domestic hot water mode is available the calorifier can be manu ally reloaded within the selected setting range The calorifier is reloaded once according to the set daytime domestic hot water temperature Reloading is limited by the set temperature for all other settings MO 16 AUG 04 1400 625 1 TIME DHW N 00min 1 TI ME DHW 1416 630 Basic display Press and hold the Domestic hot water temperature key for 3 se conds The domestic hot water reloading time is displayed the minute dis play flashes Set the desired additional reloading time by turning the rotary push button Setting range 0 240 min Tap to confirm The active reloading process is displayed until the reloading process has been completed 21 Heating system control 4 204 764 00 11 07 Domestic hot water economy temperature reduced temperature 22 MO 16 AUG 04 1400 625 TI MEPROGRAMS VT TZ DHW ZEEN DHW 1 1 Z7 ZY a NI GHT 400 DHW NI GHT 4 to Basic display Press and hold the rotary pushbutton for 3 seconds TIMEPROGRAM S is shown fl
4. the setting Confirmation for correct copying of day s Target range for the next copy process is shown flashing on the dis play Select the next copy range by turning the rotary pushbutton Target range for the copy process is shown again flashing on the display Use the same scheme to create any additional copies After completing all the changes tap the operating mode key to con firm the settings and open the basic display 4 204 764 00 11 07 Heating system control Heating curve heating characteristic The heating curve is normally preset by the installer during the commissioning of the heating system The heating curve should only be changed in small steps and over longer periods of time 3 50 3 25 3 00 2 75 2 50 110 Recommended settings 2 25 Floor heating 0 3 1 0 100 oi Radiator heating 1 2 2 0 Convector heating 1 5 2 0 175 80 70 60 1 00 m nD a Heating curve slope Heating flow temperature T CC 50 0 75 40 0 50 30 20 20 16 12 8 4 Oo 4 8 142 16 20 Ta C Outdoor temperature The slope of the heating characteristic curve generally describes the ratio between variations in the flow temperature and variations in the outdoor temperature MO 16 AUG 04 1400 625 A Tap the Heating curve key Heating curve display appears Basic display HEA
5. 4 764 00 11 07 Heating system control Special symbols MO 16 AUG 04 Ice crystal symbol 14 625 Frost protection activated MO 16 AUG 04 Umbrella symbol A i Summer disconnection active 1400 625 heating switched off domestic hot water according to program 31 4 204 764 00 11 07 United Kingdom Switzerland Germany Austria Italy France 32 Hoval LTD Northgate Newark Nottinghamshire NG24 1JN Phone 01636 672 711 Fax 01636 673 532 Hoval Herzog AG General Wille Strasse 201 CH 8706 Feldmeilen Telefon 044 925 61 11 Telefax 044 923 11 39 Hoval Deutschland GmbH Karl Hammerschmidt Strasse 45 D 85609 Aschheim Dornach Telefon 089 92 20 97 0 Telefax 089 92 20 97 77 Hoval Gesellschaft mbH A 4614 Marchtrenk Hovalstrasse 11 Telefon 07243 550 400 Telefax 07243 550 17 Carival S r l Via Per Azzano S Paolo 26 28 24050 Grassobbio BG Tel 39 035 525069 Fax 39 035 525858 Carival SA F 91743 Massy Cedex 2 route de la Bonde T l 01 69 30 83 00 Fax 01 69 30 22 54 Responsibility for energy and the environment
6. EN Operating Instructions Room station RS T Hoval United Kingdom Hoval LTD Northgate Newark Nottinghamshire NG24 1JN Phone 44 1636 67 27 11 Fax 44 1636 67 35 32 Hoval Export Hovalwerk AG Austrasse 70 9490 Vaduz Principality of Liechtenstein Phone 423 399 24 00 Fax 423 399 26 18 4 204 764 00 11 07 Subject to modifications Table of contents 4 204 764 00 11 07 PIS ALINE system COME aise nnnisasadanassenaninndeidaastandaansacannaonsdeaunseusuanesdesinandussacedususishssdaniadenadesemennanns 3 31 Operating and display elements FIOOMMSHATIOM RSTn i o aE a E E a E vena aa naapa SEa a a 3 FUNCTION Of the Operating SlSMEMUS o ssriesisnesn sn a E E E a 4 What to QO IR eino anos a a aA a nies a ea a aaa a N 5 Control elememts Ofthe Doler Controles sosisini adsa a aE ai 6 7 Main settings Changing the room temperature surcienso a a a E EE aaaea 8 9 Holiday absent constant reduced heatiing cceeeceeeeececeeeeeeeeeeeeeeeeeeaaeeeeeeeeeeeeededaaaaaaaaaaeeeeeeeeeeeeeteneeeeniaaaeees 10 Setting the operating mode holiday absent party automatic summer heating reduced standby 11 13 Changing the switching times heating tiMES ceeceeceeeeeeneeeeeeeeeeeneeeeeeeeeeeeeeeeseaeeeeeeeeeseaaeeseeeeseaeeeneaeetes 14 16 Copying of SWITCHING tIMOS saisine Sedat dep egane caus she ane E sdlassidedeacie E E Eiai 17 18 Heating curve heating Characteristic cccceccceees
7. T CURVE HC flashes In case of several heating circuits you must first select II the relevant circuit by turning the rotary pushbutton see page 3 HE OFF Technical data Confirm HEAT CURVE The slope of the heating characteristic curve is shown flashing on the II7 display HC OFF Select the desired value for the slope of the heating characteristic curve by turning the rotary pushbutton HEAT CURVE The selected slope of the heating characteristic curve is shown on the display HC 15 19 Heating system control 4 204 764 00 11 07 m0 HEAT CURVE ear MC 100 Se Tap to confirm Turn the rotary pushbutton to set up further heating circuits if requir ed After completing all the changes tap the operating mode key to con firm the settings and open the basic display Adjusting the domestic hot water temperature MO 16 AUG 04 1400 625 20 Basic display Settings can be conducted at a room station if this is available Tap the Domestic hot water temperature key The current domestic hot water temperature setpoint is shown flashing on the display 4 204 764 00 11 07 Heating system control C DHW TE DAY 630 lt p Manual domestic hot water reloading Set the desired hot water temperature by turning the rotary pushbut ton Setting range 10 65 C Factory setting 60 C The
8. To be completed by the heating installer The room station RS T does not only serve for the remote controle your heating but also at the same time the temperature in the living room Settings e g room temperature can be both at the room station RS T and directly at the boiler control panel Heating installer Plumbing installer Electrical installer Information for the plant user Room station available X Number of heating circuits 1 2 Ll3 Heating circuits Adjusted heating curve value Heating circuit HC Heating circuit MC1 Heating circuit MC2 Switching time program P2 P3 released yes no Heating system control 4 204 764 00 11 07 Function of the operating elements The central rotary pushbutton and the labelled keys are designed for easy and straightforward operati on Function keys Function keys Rotary pushbutton Change and store values Basic procedure for changing settings An example Select the desired function Turn the rotary pushbutton to select or change the desired parameter flashing word or number Press the Info key at any time to go back to the basic display without storing the values set Press the rotary pushbutton to store the value set It is also possible to store the value using the se lected function key 4 204 764 00 11 07 Heating system control What to do if The fol
9. and you know the return date You leave home in the morning and come back late in the eve ning You are travelling for an indefi nite period of time and want the living area to be at the set red uced temperature on return You are away for an indefinite period of time during spring or autumn and you don t mind if your home is cool on return Operating mode System is off during holidays HOLIDAY TIL Heating interrupted temporarily ABSENT TIL C Continuous reduced heating mode RED HEATING System switched off Frost pro tection activated STANDBY Function Heating system OFF Calorifier frost protected 5 C Room temperature set to mini mum 10 C Setting range current date 250 days End of holiday Return date 0 00 o clock Early return Press and hold oo for 3 sec to return to AUTOMATIC mode Heating temporarily interrupted until set time Setting range 0 5 24h Continuous reduced heating and domestic hot water mode around the clock The entire heating system is swit ched off and frost protected No domestic hot water mode See following pages for a detailed description on how to set the operating modes You can return to the AUTOMATIC function normal heating mode at any time by pressing and holding 6 0 for 3 sec 10 4 204 764 00 11 07 Heating system control Setting the operating mode Procedure for activat
10. ashing on the display Turn the rotary pushbutton until DHW is shown flashing on the display Tap to confirm DHW flashes on the display The temperature shown defines the desired domestic hot water tem perature outside the time periods during which the domestic hot wa ter mode is available Tap to confirm The night time domestic hot water temperature flashes 4 204 764 00 11 07 Heating system control gt a Set the desired temperature value by turning the rotary pushbutton and tap to confirm the setting After completing all the changes tap the operating mode key to con firm the settings and open the basic display 23 Heating system control 4 204 764 00 11 07 Further settings Setting the clock MO 16 AUG 04 1400 625 l TI MEP ROGRAMS TI ME DATE P 7 No TI ME S 1400 TI ME 24 Basic display Press and hold the rotary pushbutton for 3 seconds TIMEPROGRAM is shown flashing on the display Turn the rotary pushbutton until Time date is shown flashing on the display Tap to confirm Time flashes Tap to confirm The time flashes 4 204 764 00 11 07 Heating system control Setting the date YEAR slal DAY MONTH KOGI ON Mo 2709 Turn the rotary pushbutton to set the desired time a
11. ating circuit by turning the rotary pushbutton Information on which heating circuit to select for your home can be found on page 3 of these instructions Select switching times program P1 P2 or P3 if required page 16 Tap the rotary pushbutton to confirm the selected heating circuit Use the rotary pushbutton to select the day for which the heating time has to be modified Note The 3rd heating cycle is omitted if the 2nd heating cycle does not contain any switching times Change Exit Every flashing setting can be corrected using the rotary button if required and ac cepted by tapping Use the key to go back one step Use the key or wait for approx 60 sec to go back to the basic display 15 Heating system control 4 204 764 00 11 07 Tap the rotary pushbutton to confirm the day The currently set heating start time is shown flashing on the display Set the desired heating start time by turning the rotary pushbutton Tap the rotary pushbutton to confirm the set start time Turn the rotary pushbutton to set the time setpoint for the end of the heating mode on the week day shown The week day is shown flashing on the display You can now set a second heating time Mo 2 for this day by turning the rotary push button or by going directly to Tuesday to set the desired heating time Instead of introducing each day separately you can also u
12. d Frost protection is active 13 Heating system control 4 204 764 00 11 07 Changing the switching times heating times In this menu the switching time programs can be set individually for the heating and domestic hot water modes After selecting the respective heating circuit the factory set standard program P1 is loaded and can then be edited individually The standard heating times preset by the manufacturer are e g All heating circuits HC MC 1 MC 2 Oe tee 00 Domestic hot wa ter circuit DHW 09109 a00 Table for recording individual switching times Switching times program for living area MC2 Day Cycle 1 Cycle 2 Cycle 3 Switching times program for calorifier DHW Further standard programs can be or could have been set up or enabled for programming by the instal ler P1 P3 see page 16 A maximum of 3 heating times per day are possible e g per day per day 1 heating cycle 2 heating cycles heating cycles 14 4 204 764 00 11 07 Heating system control MO 16 AUG 04 1400 625 TI MEPROGRAMS TI MEPROGRAMS lee Sooo TI MEPROGRAMS D Basic display Press the rotary pushbutton for at least 3 sec The note TIMEPROGRAM S appears flashing on the display Tap the rotary pushbutton to confirm The note HC also appears flashing on the display Select the he
13. eeeceneeeeeneeeeeaeeseeaeeeeaaeeeesaeeeesaeeesaeeseaeeeseeesseneeessnaeeesaes 19 20 Adjusting the domestic hot water Adjusting the domestic hot water temperature eect eeeeeee eee sence ee eeeaeeeeeteaeeeeeeneaeeeeeteeaeeeeenenaneeeeeee 20 21 Manual domestic hot water reloading escasu asda decay lade ahas Gis viseettens R hula seesendinayauehlen 21 Domestic hot water economy temperature esesrerssurissssriasiinsananni Ninik nnani ENAN ANENA ana EEN ENR NNa ENSAR ENER 22 23 Further settings Setting the Clockin a Wad enaa naaa bP Eae n Aaa i en he ease AR aeS EEEE aE 24 25 Setting the dates iira e i ee he ed eed ee 25 Changing between summer and winter time 0 ccceececeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaeeeceaeeeecaeeeseaeeseeaeeeseneeeseneeeeeeeeeee 25 Setting the language sareni cioinn heres enh deed ddan A a ee 26 Reloading the standard switching times program Deleting the own time program 27 28 Alarm MOSSAQES E E E sn eeneecbdvaenesvuent E ec cgsuettieey sever nena dusei ie ceeevatienenssares 29 System information Information key for system temperatures and heating circuit information cecceeeeeeeeeeeeeeeeeeneeeeeeeeeeeeees 30 Special SYMDOINSs zsscdeciccce sisted cceevevieees ds renders teste ee deere id ee reiedserccntine edeten iis dened aed avant EEEE ea cede a aiaa 31 4 204 764 00 11 07 Heating system control Room station RS T Important addresses and telephone numbers Technical data
14. h off heating page 11 Party Extended heating page 11 Automatic Automatic heating according to the preset heating times page 12 Summer Only DHW Heating off page 12 Heating Continous heating mode page 12 Reduced heating Constant reduced heating mode page 12 7 System switched off standby Frost protection activated page 12 8 Display The basic display shows the day of the week date and time of the day as well as the current room tempera ture room station 1 Possible readouts 1 Active heating time 24h 2 Weekday display 3 Display of the active operating mode and the clock programme Time of the day Selected operating mode Date Day Month Year Room temperature when activated NOOO Ff Heating system control 4 204 764 00 11 07 Main settings Changing the room temperature Setting the daytime room temperature MO 16 AUG 04 1400 625 Sw ROOM DAY ROOM DAY 220 Basic display Tap the Daytime room temperature key The daytime room temperature If MC1 is shown on the dis setpoint flashes play you need to select the heating circuit Information on which hea ting circuit to select for your home can be found on page 3 of these instructions Set the desired room temperature by turning the rotary pushbutton Setting range 5 30 C Factory setting 20 C The new Daytime room temperature se
15. ing the rotary pushbutton Information on which heating circuit to select for your home can be found on page 3 of these instructions Select switching times program P1 P2 or P3 if required page 16 TI MEPROGRAMS Sl MC 1 e g Tap the rotary pushbutton to confirm the selected heating circuit The first day of the week is shown flashing on the display Keep turning the rotary pushbutton until COPY DAY appears flashing on the display 17 Heating system control 4 204 764 00 11 07 COPY FROM M N Pai COPY DAY OK TO 5 COPY MO COPY M TO ip TO 6 COPY MO 18 Tap the rotary pushbutton to confirm the settings Change Exit Every flashing value can be corrected using the rotary button and accepted by tapping Use the key to go back one step Use the key or wait for approx 60 sec to go back to the basic display Select the day from which the heating time setting is to be copied by turning the rotary pushbutton Note The 3rd heating cycle is omitted if the 2nd heating cycle does not contain any switching times Tap the rotary pushbutton to confirm the desired day Select the target day s Days of the week MO SU whole week 1 7 working days only 1 5 weekend only 6 7 Tap the rotary pushbutton to confirm
16. ing the operating modes HOLIDAY TIL ABSENT TIL or PARTY TIL Il lt a OP MODE AUTOMATI C 4 e l l HOLI DAY TIL i HOLI DAY TIL aal 2708 Tap the Operating mode key The note OP MODE is displayed for a short time The currently active operating mode is then shown flashing on the display An indicator bar at the lower part of the display points to the corresponding symbol Set the desired operating mode by turning the rotary pushbutton HOLIDAY TIL or ABSENT TIL or PARTY TIL The selected operating mode is shown flashing on the display Tap the rotary pushbutton to confirm the selected operating mode Today s date HOLIDAY TIL or the current time ABSENT TIL PARTY TIL is shown flashing on the display Turn the rotary pushbutton and select for HOLIDAY TIL the date of return from holiday for ABSENT TIL the expected return time within max 24h for PARTY TIL the time the party is expected to end Tap the rotary pushbutton to confirm the setting 11 Heating system control 4 204 764 00 11 07 Procedure for activating the operating modes AUTOMATIC SUMMER HEATING RED HEATING and STANDBY l EX o Tap the key Operating mode P MODE 2 j The note OP MODE
17. lowing information can be used as a first level support in frequently occurring situations Observation It is too cold It is too warm From now on equal day and night temperatures should be maintained continuously This evening the heating should remain on for longer A larger amount of hot water is required From now on hot water but no heating is required Suddenly there is no heating or hot water it is cold The room temperature setpoint requires frequent adjustments because it is too cold or too hot Today will be absent for sever al hours during the day am travelling for a short period of time e g 3 days I will be travelling for an indefi nite period of time In summer it is too cold or too warm Remedy Set a higher value for the room temperature with E gt and the rotary pushbutton see page 8 13 Set a lower value for the room temperature with E gt and the rotary pushbutton or set the operating mode to page 9 13 Set the operating mode with 6 0 to HEATING page 12 13 Set the operating mode with ey to PARTY and set the desired time page 11 Press ea for 3 seconds and set the additional loading time page 21 Set operating mode with to SUMMER heating off hot water only page 12 13 Check the control unit for alarm messages and consult a heating engineer if necessary Change the adjusted heating curve page 19 Set the operati
18. nd tap to con firm Turn the rotary pushbutton for further adjustments Year is shown flashing confirm Turn to change the year setting confirm Day Month is shown flashing confirm Turn to change the Day Month setting confirm Changing between summer and winter time ro CHANGE PSS SU WI ON 2 Change is shown flashing confirm Turn to change SU WI ON or OFF confirm After completing all the changes tap the operating mode key to con firm the settings and open the basic display 25 Heating system control 4 204 764 00 11 07 Setting the language 1400 MO 16 AUG 04 625 l TI MEPROGRAMS SYSTEM SYST XN LANGUAGE Bons sa 26 You will be prompted for the desired language when switching on the control system for the first time Changing the language is also possi ble during normal operation Basic display Press and hold the rotary pushbutton for 3 seconds TIMEPROGRAMS is shown flashing on the display Turn the rotary pushbutton until System is shown on the display Tap to confirm Language appears on the display Abbreviations for the language are shown flashing D German GB English F French Italian Turn to select the desired language and tap to confirm After completing all the changes tap the operating mode key to
19. ng mode with o o to ABSENT TIL and set the return time page 10 11 Set the operating mode with cy to HOLIDAY TIL and set the return time page 19 Set the operating mode with 9 to RED HEATING When returning set the operating mode with to AUTO MATIC page 12 13 A indicates that the summer disconnection is active If it is too cold set the operating mode with to HEA TING page 12 Heating system control 4 204 764 00 11 07 Control elements of the boiler control 8 7 1 6 2 5 3 4 Key Designation Function 1 Daytime room temperature Set the daytime room temperature page 8 Set the room temperature in the reduced heating Reduced room temperature mode page 9 3 Set the domestic hot water temperature DFM temperaturer Manual DHW reloading page 21 4 Rotary pushbutton Change the values by turning Confirm the values by pressing Function selection by pressing and turning gt e Show the operating data on the display C Information key e Return to the basic display without saving the values page 30 6 Ce Heating curve set up Set the heating curve page 19 4 204 764 00 11 07 Heating system control Key Designation Function 7 TTS Operating mode selection key Select the operating modes Turn off the heating system during the holidays Holiday Frost protection page 11 Absence Tamporarily switc
20. ode 10 20 HEAT GENER Example for heat generator alarm messages switching status ERROR 30 2 Error code 30 40 DHW Example for logical alarm messages control functions ERROR 50 2 Error code 50 60 BUS Example for data bus alarm messages address errors on data bus ERROR 70 1 Error code 70 The controller comprises a comprehensive alarm logic which displays the fault type by means of the corresponding error code 29 Heating system control 4 204 764 00 11 07 System information Information key for system temperatures and heating circuit information i turn to left turn to right Actual values Vv Heat generator STARTS OUTSIDE Outdoor temperature Starts stage 1 0 ST 1 Fpargenarator OPER HOURS HEAT GENER Heat generator Hours of operation temperature stage 1 Oh ST 1 DHW Domestic hot water temperature FEDW Flow temperature In certain cases addi Back to the basic dis tional information can play Briefly press be displayed i only for 2 stage operation only in conjunction with room sensor Heat generation Room temperature direct HC Hours of operation stage 2 Room temperature MC 1 Heat generation Starts stage 2 Room temperature MC 2 All temperature values shown represent the current values Press and hold the rotary pushbutton to display the individual setpoints 30 4 20
21. se the b 246810 12 14 16 18 2022 24 copy function see page 17 0600 2200 This function allows you to copy the switching times from any days d of the week to other days Mo Su or to a whole week 1 7 or to day groups like working days 1 5 or weekends 6 7 1 Once you have completed all the changes tap the operating mode DRO l i Saa key to confirm the settings and open the basic display If P1 is displayed it means that further standard heating times programs are already enabled If not P2 and P3 can be enabled by the heating technician Factory setting Factory setting Switching times program P2 Switching times program P3 06 00 08 00 16 00 22 00 All heating circuits Mo Fr 07 00 18 00 All heating circuits 7 i HC MC 1 MC 2 HC MC 1 MC 2 06 00 08 00 13 00 22 00 Sa Su reduced 07 00 23 00 Hot water circuit Mo Fr 06 00 18 00 DHW 05 00 08 00 15 30 22 00 Sa Su reduced 05 00 08 00 12 30 22 00 Hot water circuit DHW 06 00 23 00 16 4 204 764 00 11 07 Heating system control MO 16 AUG 04 1400 625 Basic display Press the rotary pushbutton for at least 3 seconds The note TIMEPROGRAMS is shown flashing on the display Tap the rotary pushbutton to confirm the selected operating mode TI MEPROGRAMS VI LZ ue The note HC is also shown flashing on the display TI MEPROGRAMS Select the heating circuit by turn
22. tpoint appears on the dis play Tap the Daytime room temperature key to confirm the temperature setpoint 4 204 764 00 11 07 Heating system control Setting the reduced night time temperature MO 16 AUG 04 Basic display 1400 625 Tap the Reduced room temperature key ROOM NI GHT The night time room temperature If MC1 is shown on the dis yol A setpoint flashes play you need to select the 20 0 heating circuit Information on which hea ting circuit to select for your home can be found on page 3 of these instructions Set the desired room temperature by turning the rotary pushbutton Setting range 5 30 C Factory setting 16 C ROOM NI GHT The new Reduced room temperature setpoint appears on the dis 180 pan Tap the Reduced room temperature key to confirm the temperature setpoint Heating system control 4 204 764 00 11 07 Holiday absent constant reduced heating Depending on the duration of your absence and what your requirements are in regard to comfort there are different operating modes available for interrupting or reducing the heating In any case you will be able to save a lot of energy and money if the rooms are not heated or less heated during your absence The following table is intended as a guide for finding the best operating mode for each particular case Application You go on holiday for e g 1 week
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