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CentaurStat 7 User Operating Instructions

1. a HORSTMANN CentaurStat 7 User Operating Instructions Central Heating Programmable Room Thermostat i p bake ise The Centaurstat 7 is a programmable room thermostat that provides precise temperature control from a single point with up to 6 different temperature settings possible every 24 hours on a 7 day weekly cycle Temporary temperature adjustments can be made by means of the temperature override buttons on the front of the unit The CentaurStat 7 Programmable ThermoStat The simple instructions contained in this user guide are designed to help with the programming and operation of the unit HORSTMANN SET indicator SET positions SET button OVERRIDE MINUS button OVERRIDE PLUS button ENTER button Time or current temperature display Target temperature System ON symbol 10 Day of week indicator 11 PM indicator no display for AM 12 Temperature lock symbol CON A WU BhWN O Manual Overrides Target Temperature Override The CentaurStat will operate on this new setting until the next time period Use the PLUS and Ensure the SET MINUS buttons indicator is in the normal RUN position to increase or decrease settings Where an override temperature has been set this altered setting will remain until the next time and temperature setting is reached Target Temperature Lock The temperature lock facility allows you to lock in the target or override tem
2. air to sense the temperature so they must not be covered by curtains or blocked by furniture Nearby electric fires televisions wall or table lamps may prevent the thermostat from working properly HORSTMANN Email sales horstmann co uk Website www horstmann co uk Horstmann Controls Limited Bristol BS4 1UP C Leaflet number P82162 Issue 3
3. by gently pulling on the right Remove the old batteries with the batteries removed your CentaurStat will retain its programme for approximately five minutes and replace them with three new AA size alkaline batteries ensure they are fitted correctly as shown on the label positioned between the battery terminals see diagram Once batteries have been fitted offer the left hand side of the unit up to the mounting plate ensuring that the two guide lugs are fitted into the corresponding slots in the side of the mounting plate Now swing the right hand side of the CentaurStat up against the mounting plate until the release button clicks into place After a few seconds the display will automatically return to your CentaurStat PLEASE NOTE If the battery fitting time has exceeded five minutes some time and temperature adjustment may be necessary please refer to the relevant sections located on page 4 and 5 of this user guide Resetting the CentaurStat Electronic equipment can in some circumstances be affected by electrical interference If the programmer s display becomes frozen or scrambled or if you wish to revert back to the default time settings please use the following procedure Lower the flap and press the SET and ENTER buttons together release the buttons and the CentaurStat will return to preset factory default time settings Service and Repair This product is NOT user serviceable Please do not dismantle the unit In t
4. efault 1 6 00am 20 C 1 7 00am 20 C factory settings are shown 8 30am 18 C 10 00am 18 C opposite Should you want 11 30am 20 C 11 30am 21 C to alter these default times 1 30pm 18 C 1 30pm 18 C and temperatures proceed 5 00pm 21 C 5 00pm 21 C as per the instructions on i page 5 10 00pm 15 C 11 00pm 15 C Display Features The CentaurStat has two user displays by pressing the PLUS and MINUS buttons simultaneously the user can toggle between either Display 1 or Display 2 MIWTF SS MtTW TF 6 amp Display 1 Shows current time Display 2 Shows current and and target temperature target temperature Changing the Times and Target Temperatures Press the SET button Q The day setting indicator until the SET indicator is next to PROG position will now flash Use the PLUS and MINUS buttons to alter the day to be programmed me parget temperature The time setting for the setting for the 1st period f f 1st period will now flash will now flash Use the Use the PLUS and MINUS PLUS and MINUS buttons buttons to alter the start to alter the target E time if required temperature if required Repeat for remaining 5 time and temperature periods The copy indicator will now illuminate this will allow the complete programme to be duplicated into any or all of the remaining days Go to B to continue or go to C to finish If the copy feature is not required press ENTER and go to A to program
5. emperature and saves energy The way to set and use your programmable room thermostat is to find the lowest temperature settings that you are comfortable with at the different times you have chosen and then leave it alone to do its job The best way to do this is to set low temperatures first say 18 C and then turn them up by one degree each day until you are comfortable with the temperatures You won t have to adjust the thermostat further Any adjustments above these settings will waste energy and cost you more money If your heating system is a boiler with radiators there will usually be only one programmable room thermostat to control the whole house But you can have different temperatures in individual rooms by installing thermostatic radiator valves TRVs on individual radiators If you don t have TRVs you should choose a temperature that is reasonable for the whole house If you do have TRVs you can chose a slightly higher setting to make sure that even the coldest room is comfortable then prevent any overheating in other rooms by adjusting the TRVs The time on the programmer must be correct Some types have to be adjusted in spring and autumn at the changes between Greenwich Mean Time and British Summer Time You may be able to temporarily adjust the heating programme for example Override Advance or Boost These are explained in the manufacturer s instructions Programmable room thermostats need a free flow of
6. he unlikely event of a fault developing please refer to the RESETTING THE CENTAURSTAT section of this user guide located above If this fails to resolve the problem please contact a local heating engineer or a qualified electrician Battery Replacement Diagrams Battery Terminals Back view of CentaurStat 8 What is a programmable room thermostat an explantion for householders A programmable room thermostat is both a programmer and a room thermostat A programmer allows you to set ON and OFF time periods to suit your own lifestyle A room thermostat works by sensing the air temperature switching on the heating when the air temperature falls below the thermostat setting and switching it off once the set temperature has been reached So a programmable room thermostat lets you choose what times you want the heating to be on and what temperature it should reach while it is on It will allow you to select different temperatures in your home at different times of the day and days of the week to meet your particular needs Turning a programmable room thermostat to a higher setting will not make the room heat up any faster How quickly the room heats up depends on the design of the heating system for example the size of the boiler and radiators Neither does the setting affect how quickly the room cools down Turning a programmable room thermostat to a lower setting will result in the room being controlled at a lower t
7. me the remaining days or go to C to finish Use the PLUS button O to select a day to copy the programme to Repeat for all days that require this programme The day indicator will remain illuminated for days which have already been copied to To programme the remaining Press the SET days if alteration to preset button until the SET times are required indicator is returned press ENTER and go to A to the RUN position or go to C to finish 5 Reducing the Number of Time and Temperature Settings To reduce the number of temperature settings available in a day from six to four proceed as follows Set the 3 and 4 period temperatures to the same temperature as set on period 2 Periods 1 and 2 will now operate as normal For two settings per day set the temperature on periods 2 3 4 and 5 to the same temperature as set on period 1 For one setting per day use the Target Temperature Lock procedure located on page 3 of this user guide Battery Replacement Your CentaurStat is battery operated The batteries supplied with the unit should last for approximately RUH two years cock When the batteries are nearing the end of their life jot a BATTERY LOW symbol will flash on the display see diagram opposite Isolate any external electricity supply to your CentaurStat before replacing the batteries Press the RELEASE BUTTON on the right hand side of the unit and swing the front cover away from the mounting plate
8. perature of the current heating period With the SET indicator in the RUN position press the ENTER button The temperature lock symbol will appear on the right hand side of the display All control buttons other than the ENTER button will be inoperative The locked temperature will now override all other temperature settings until the lock is cancelled To cancel the temperature lock and return to normal settings simply press the ENTER button If an override temperature had been re set before the lock was activated the clock altered setting will remain until the next procramme switching period is reached vee Setting the Time of Day Press the Press the SET button see the P Use the SET button until SET US an PLUS an until SET indicator is indicator next to clock buttons buttons is returned a to adjust to adjust t a display the day the time 10 ME RUN MINUS MINUS position When setting the time or altering the temperature settings if a period exceeding 65 seconds is allowed to elapse between button presses then the CentaurStat will automatically return to the run position Any alterations made since the last press of the ENTER button will not be recognised Time and Temperature Settings The Centaurstat 7 has DEFAULT SETTINGS SIX temperature settings per 24 hours These all have different Monday Friday Saturday Sunday start times and temperature Period Times Temps Period Times Temps settings The d

CentaurStat 7 User Operating Instructions

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