User Manual
Contents
1. regulations Keep AC mains supply load cables separate from equipment wiring 2 This unit is for fixed wiring only 3 A switch with a minimum contact separation of 3mm in all poles must be incorporated in the fixed wiring as way to disconnect the supply 4 Install a fuse rated at no more than 3 Amps Installation and Setup Wiring diagrams Wired thermostats combi boiler homexpert by Honeywell THR850SUK 7 Day Timeswitch Wiring diagrams Wireless thermostats combi boiler 230 Vac connection Potential free connection THR840D Digital Thermostat THR830T Thermostat BOILER Note 2 This is a Class II device i e double insulated A parking terminal is available for earth wiring if required Note 1 If normal mains voltage is required link terminals L and 1 20 Connections are shown below for the THR822B Relay Box supplied with a THR842D wireless thermostat Potential free connection 230 Vac connection THR822B THR822B Relay Box Relay Box Receiver Unit Receiver Unit NJL TIJT2 BOILER BOILER Note 3 This is a Class II device i e double insulated A parking terminal is available for earth wiring if required Note 1 When connecting to a wireless relay box receiver unit the receiver MUST have permanent mains power from the fused spur to operate co2. unwanted time period set identical times for the On and Off periods 11 Special Functions Temporary schedule overrides Press to turn system on or off O 2 E ONCE OFF Green light shows system status on or off EXTRA HOUR C overrive The OVERRIDE button works like a simple on off switch If you press the button when the system is on it will turn off If off it will turn on This button works only when the MODE is set to Auto or Once see page 9 This change is temporary It does not change the daily programme schedule which will resume at the next programmed On or Off time period NOTE See also temporary overrides for extra hours or holidays see pages 13 14 12 homexpert by Honeywell THR850SUK 7 Day Timeswitch Temporary schedule overrides Extra Hour Press to add extra hour s A 3E OVERRIDE fes m d i CONT ONCE OFF Green light shows system status on or off o EXTRA HOUR O OVERRIDE The EXTRA HOUR button can extend the current heating period for 1 to 3 hours more or switch on the heating for a short period of time For example if you expect guests you may want heating on for longer than usual Press EXTRA HOUR once or more to extend heating times This button works only when the MODE is set to Off Auto or Once see page 9 This change is temporary It does not change the daily programme schedule which will resume after the n
3. Fd aaa Ea See page 8 3 Customise heating on off periods if necessary ssssssssseeees See pages 10 11 Quick reference Current time Daily programme periods see page 10 Press to programme next day see page 11 Press to copy a daily programme schedule see page 11 homexpert by Honeywell THR850SUK 7 Day Timeswitch Line of text Current area day Operating modes see page 9 Holiday button see page 14 leith ONCE on ove 3 Aura OFFI OFF2 OFF3 OFF PROGRAMME DAY TIME Press to change time Press to save changes and Mode button or advance in menus advance to next step see page 9 Press to extend heating time see page 13 Light is on when heating system is on Press to override heating programme see page 12 Slider set to RUN except during programming Remove cover to use controls e Operation and Programming Date time settings DAY TIME m PROGRAMME RUN m OK Set to DAY TIME gt SET THE GAY Press or to change fC py 3l Press OKto save A SET THE MONTH To change the date or time set the slider to DAY TIME Use the or buttons to set the correct day then press the OK button Follow the same procedure to set month year and time Date
4. User Manual homexpert by Honeywell THR850SUK One Channel 7 Day Timeswitch 50051986 001 Rev A WARNING This product must be correctly installed and configured to work properly see pages 16 24 If you are not experienced in electrical wiring we recommend professional installation to avoid possible personal injury or equipment damage TIP After installation see the QUICK START GUIDE on page 6 to customise and begin using your new timeswitch right away CE Copyright 2010 Honeywell International Inc homexpert by Honeywell is a trademark of Honeywell International Inc All rights reserved homexpert by Honeywell THR850SUK 7 Day Timeswitch About your new timeswitch Installation and setup What is a programmer ssss 4 System installation sssse 16 FANS C 5 Wall bracket installation 17 18 QUICK START GUIDE 6 System WINN Geess siuna vorne 19 22 Quick reference to controls incl Installer Setup itc 23 24 Date time settings ssssssss 8 Appendix Operation and programming Alternate programme schedules 25 Operating modes esseees In case of difficulty Cost saving programme schedules Disposal and recycling ii To adjust programme schedules Warranty information susssss Special functio
5. ages 12 13 ort T mondana ow Goa ona tea ons tows Schedules __ 20a aoa 12000m nooo xanor 10800m IssudsySunday om onm one ona ons iomar OO enar en ioo tonem a 11669 TIP To review your schedule quickly move the slider to PROGRAMME then press OENE the OK button repeatedly to see each on off time period PROGRAMME RUN 10 homexpert by Honeywell THR850SUK 7 Day Timeswitch To adjust programme schedules DAYITIME PROGRAMME RUN OK t u o Set to PROGRAMME SET ON TIME I one 0N3 OFFI OFF2 OFFI p Press or to change time n ON THIE RP an Press OK wz SET DFF TINE I an To programme the heating system schedule 1 Move slider to PROGRAMME then press or to adjust the On time for Period 1 as shown at left 2 Press OK to save then press or to adjust the Off time for Period 1 Repeat for all time periods 3 After all Monday time periods are set press the NEXT DAY button to adjust settings for Tuesday Repeat for all other days To stop programming at any time move slider to RUN COPY Q SHORTCUT While programming press the COPY DAY button to copy ud settings for the current day and apply them to other days For example you can apply Monday settings to other days of the week After copying press the NEXT DAY button to select a target day then press OK o6 TIP To delete an
6. and time are set at the factory and should not need to be changed unless you turn off the automatic daylight savings feature see pages 23 24 TIP While setting the time press and hold the buttons to change the clock time more rapidly THU 30 12 2010 see CONT ONCE OFF EJ d Press to change heating system operating mode homexpert by Honeywell THR850SUK 7 Day Timeswitch Press the MODE button repeatedly to select an operating mode Cont Heating system remains on co Auto In this mode the timeswitch fol ntinuously ows a daily schedule for the heating system turning it on and off at preset times during the day see page 10 Once In this mode the heating is tur On time of the day and remains on time see page 10 ned on at the first programmed until the last programmed Off Off Heating system remains off at al times Operation and Programming Cost saving programme schedules The timeswitch is preset at the factory to turn off your home heating system when it s less likely to be needed The preset schedule is shown below To change it see pages 11 14 See also two alternate schedules on page 25 To run this schedule as shown below or as you ve modified it leave the MODE button set to Auto see page 9 and move the slider to RUN You can make temporary adjustments at any time without changing the schedule by pressing the EXTRA HOUR or OVERRIDE buttons see p
7. ectrical is blank power Check the timeswitch to make sure heating is set to be on The indicator light should be lit Make sure the room thermostat is switched on and set to an Radiators are cold appropriate temperature level e e Check to ensure the boiler is operational e Check wiring pages 19 22 and system configuration pages 23 24 Disposal and recycling Batteries and waste electrical products should not be disposed of with household waste Please recycle where these facilities exist Check with your local authority or retailer for recycling advice Please retain these instructions for future reference 26 homexpert by Honeywell THR850SUK 7 Day Timeswitch Limited Warrant Honeywell warrants this product for 1 year from date of purchase We undertake to replace or repair at our discretion products should they become defective within 1 year solely as a result of faulty materials and or workmanship Understandably if the product has not been installed or maintained in accordance with Honeywell s instructions has not been used appropriately or if any attempt has been made to rectify dismantle or alter the product in any way the warranty will be invalidated This product warranty states Honeywell s entire liability It does not extend to cover consequential loss or damage or installation costs arising from a defective product If the product is defective please return it together with a proof of p
8. ly in an area where the ambient temperature is between O and 40 C Install the wall bracket as shown on page 18 Leave a minimum of 110 mm clear space above and below the wall bracket and at least 10 mm space on either side 17 Installation and Setup Mounting options Mount on existing switch box 18 Use appropriate wood screws or anchor screws to mount the wall bracket flush against the wall Use metal screws to mount on an existing junction box Pull wiring through the wall bracket and connect to screw terminals as shown on page 19 1 2 Make sure electrical power is off Install wall bracket as shown at left Connect system wiring as shown on pages 19 22 then replace timeswitch on wall bracket and secure with screws homexpert by Honeywell THR850SUK 7 Day Timeswitch Connect system wiring Terminal screws Insert stripped wires beneath terminal screws then tighten MAINS INPUT TIMED OUTPUTS 19 Connect wiring from your heating system to the timeswitch terminal screws as shown at left See wiring diagrams on pages 20 22 for details 1 Make sure electrical power is off 2 Strip insulation to expose about 7 mm of bare wire 3 Use a screwdriver to loosen terminal screws insert wires beneath terminal clamp then tighten securing screws 4 Replace timeswitch on wall bracket tighten Screws then restore electrical power Q NOTES 1 All wiring must comply with IEE
9. ns Temporary schedule overrides Extra FOUN cep eco s Holiday MOdS cca iic trina Advanced features User Manual What is a programmer an explanation for householders Programmers allow you to set On and Off time periods Some models switch the Se Crystal central heating and domestic hot water on and off at the same time while others allow Cy Mark the domestic hot water and heating to come on and go off at different times Set the On Clarity and Off time periods to suit your own lifestyle On some programmers you must also set whether you want the heating and hot water to run continuously run under the chosen On and Off heating periods or be permanently off 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 The heating will not work if the room thermostat has switched the heating off And if you have a hot water cylinder the water heating will not work if the cylinder thermostat detects that the hot water has reached the correct temperature approved by Plain English Campaign homexpert by Honeywell THR850SUK 7 Day Timeswitch About your new timeswitch The THR850SUK is designed to wo
10. rk with your existing thermostat and heating system It can work automatically or you can adjust it manually to maintain a comfortable indoor environment while minimising energy use and costs associated with heating your home Features Energy saving design Automatically activates or shuts down your heating system up to six times per day to fit your lifestyle while saving energy costs Each day of the week can be programmed separately see pages 10 14 e One touch comfort control Allows you to override programmed settings at any time by turning your heating system on or off or by extending an on period by up to three hours Holiday button Turns off your heating system for up to 99 days while you are away then resumes normal operation when you return see page 14 Seasonal clock change Automatically adjusts the clock for seasonal changes in the spring and autumn to adjust for standard time or daylight savings time Lifetime memory Saves your customised settings indefinitely even if the mains power supply fails User Manual QUICK START GUIDE Your new timeswitch is factory set and ready to go Just check the steps below and change settings if needed 1 Install and set up the timeswitch if this has not been done by a professional installer cccccccceecsseceeeesessssteeeeeeceeestsaeeees See pages 16 24 2 Check and reset daytime if nieCessary eee casses coena renean see arsi ha kk ea ao PER REY A apo
11. rrectly Note 2 If normal mains voltage is required link terminals L and 1 21 Installation and Setup Replacement wiring If you are using the THR850S to replace other Honeywell timeswitches the equivalent wiring terminations are shown below runsas terminas TN oe 41 e ST9100A ST9100C ST7000B If you are replacing the ST7000B a permanent mains supply must be provided for the THR850S timeswitch and terminal L must be linked to terminal 1 ME 22 homexpert by Honeywell THR850SUK 7 Day Timeswitch Installer setup Oe OK NEXT ee NEXT Press and hold both Press OK to begin Function Setting number Ze Press or to change setting Function Setting number Installer settings allow you to customise how your system works Check the table on page 24 to see if any settings need to be changed To change installer settings 1 2 Set slider to RUN Press and hold the OK and buttons together until the screen displays Set Installer OK Press OK to enter installer setup mode and continue Press OK repeatedly to scroll through functions until you find one you want to change see list on page 24 Press the or buttons to change any setting then press OK to save the new setting and advance to the next function To exit installer setup at any time move the slider switch up then back down to the RUN position See table on page 24 for comple
12. s to 4 time settings if desired See page 24 Seasonal time change The clock automatically changes in spring and autumn to correspond with changes to and from daylight savings time See page 24 to turn off this feature Adjustable clock format The screen can display time in either AM PM format i e 2 pm or 24 hour format 14 00 See page 24 Adjustable backlight A bright continuous backlight makes the display screen easier to read You can change its operation so the backlight always remains off or is lit for only a few seconds after each button press See page 24 15 Installation and Setup System installation e Room Thermostat Installation procedure 1 2 3 4 5 Timeswitch Boiler a System wiring AM Disconnect electrical power Install timeswitch Connect system wiring Restore electrical power Configure system operation NOTE If you are not experienced in equipment installation and electrical wiring we recommend that these procedures be done by a professional installer DISCONNECT ELECTRIC POWER BEFORE INSTALLATION Can cause electrical shock or equipment damage 16 homexpert by Honeywell THR850SUK 7 Day Timeswitch Wall bracket installation Use a screwdriver to loosen screws and separate the timeswitch from the wall bracket as shown at left Select a mounting location about 1 2 to 1 5 metres from the floor where the display can be seen clear
13. te list of functions and settings 23 Installation and Setup homexpert by Honeywell THR850SUK 7 Day Timeswitch Installer setup functions and settings Alternate programme schedules Factory default setting Setting Options In addition to the default programme schedule shown on page 10 you can set the system to run either of the 19 AM PM 1 chou ime foimar schedules shown below Either schedule can be changed as described on pages 11 14 Clock format 24 24 hour time f t our time forma Schedule B Screen backlight 1 Screen lit when button is pressed 630am 9 30am 12 00pm 1 00pm 4 30pm 11 00pm inter ti 0 No change 630am 9 30am 12 00pm 1 00pm 4 30pm 11 00pm 1 1 day operation 5 5 2 day operation 7 7 day operation Dally time periods oo de qr t Economy Monday Friday ow emm ow wma ons Toms 6 30am 7 30am 12 00pm 12 00pm 5 00pm 10 00pm 6 30am saasa ow onm on2 rona one torar P nam ena 12009 room 5o 039 1 day or 5 2 day or 7 day operation A Standard see page 10 Preset time schedules B More comfort was page 25 C More economy see page 25 Reset all settings SH Dod ees 9 1 Reset to factory default settings See page 23 to change these settings Always press OK after changing any setting 24 25 Appendix In case of difficult Timeswitch screen e Check the heating system to make sure the timeswitch has el
14. umber of hours you choose 1 to 3 hours a NOTE See also temporary overrides for holidays see page 14 13 Special Functions Temporary schedule overrides Holida DAY TIME Set slider to RUN PROGRAMME RUN q P e N Press HOLIDAY Press or to change Press OK to start timeswitch ne 25 Screen displays days remaining The Holiday feature turns off your heating while you are away for an extended time up to 99 days After the designated time the system resumes normal operation 1 With slider set to RUN press the HOLIDAY button 2 Press or to select the number of days you will be away up to 99 days then press OK to save and exit The display shows the date you will return and counts down the number of holiday days remaining To cancel the Holiday mode at any time press HOLIDAY again 14 homexpert by Honeywell THR850SUK 7 Day Timeswitch Advanced features Preset programme schedules The timeswitch is preset to follow the schedule shown on page 10 Schedule A unless you change the settings However instead of changing the settings manually you can choose either of 2 other pre configured schedules Schedule B keeps heat on longer if you re often at home Schedule C keeps heat off longer to reduce energy costs See page 25 Adjustable time settings By default the timeswitch has 6 time settings per day 3 periods on 3 periods off You can reduce thi
15. urchase or receipt to the place of purchase This does not affect your statutory rights If you require further information about this product call the homexpert by Honeywell technical helpline on 0845 604 2893 For a full list of terms and conditions please visit www homexpertbyhonyewell com 2010 Honeywell International Inc 27 e Need Help For assistance with this product please visit www homexpertbyhoneywell com or call Honeywell Customer Care at 0845 604 2893 recommended G Honeywell The Arnold Centre Paycocke Road homexpert Basildon Essex by Honeywell S814 SEA Technical Help Desk 0845 604 2893 50051986 001 Rev A www homexpertbyhoneywell com 2010 Honeywell International Inc e
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