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1. 3 s HEATING Temperature wondayFiday rena 2 a e s 6 Fsaturay sundey 1 2 3 s 6 COOLING 12 A oe ooh SET TINE I I tse TINE OP ih Sh Sh 15 X can ou SET TEMP f We 2 Se cC an 0 34 TEMP I OKP Aa SOC ER homexpert by Honeywell THR870CUK Programmable Thermostat To adjust program schedules To customise the program schedules first make sure the system you want to program heating or cooling is selected see page 10 Heating and cooling schedules must be programmed separately 1 Press lt then adjus shown at left the time and temperature for Period 1 as 2 Press OK to advance to the next step or press the gt button to advance to the nex time periods time period See page 14 to delete unwanted 3 After all Monday time periods are set press the DAY button to customise settings or Tuesday and other days of the week To stop programming at any time press any MODE button Auto Manual or Off see page 11 COPY SHORTCUT While programming press the COPY DAY button to copy DAY all settings for the current day and apply them to other days For example you can apply Monday settings to all other days of the week After copying press the DAY button to select a target day then press OK 13 Operation and Programming To add or remove program time periods tee Ey ee 5 You can elimin
2. See page 31 for important information LE Electric heat 0 Resistive loads lt 3 A Systemi setting 2r SENO TA CRH 1 Resistive loads 3 to 8 A Electric heating System setting 2 Cr Set to 12 CPH See page 31 for important information System setting 3 EH Set to 1 if load gt 3A Heating Cooling options 0 No central cooling system installed 1 Allows switching between heating and cooling systems Your cooling system Changes required Setting Options Thermostat cannot control cooling unless you select 1 Heat pump air conditioner System setting 1 Ot Set to 4 minutes Pump exercise 0 Off o System setting 2 Cr Set to 3 CPH 1 On turns on pump periodically to keep equipment System setting 4 HC Set to 1 functioning properly See page 27 to change these settings Always press OK after changing any setting Syse seting AHE Sete See page 27 to change these settings Always press OK after changing any setting 30 31 Appendix In case of difficult Thermostat screen is blank Heating or cooling system does not respond Desired temperature cannot be maintained Make sure two fresh AA alkaline batteries are properly installed see page 25 Check thermostat batteries see above Make sure heating and cooling systems have power Check fuses and circuit breakers and replace or reset as needed Check wiring pages 22 24 and system configuration pages 27 31 Run system test see page 26 If abov
3. 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 34 homexpert by Honeywell THR870CUK Programmable Thermostat 35 Need Help For assistance with this product please visit www homexpertbyhoneywell com or call Honeywell Customer Care at 0845 604 2893 recommended amp Honeywell The Arnold Centre Paycocke Road homexpert Basildon Essex by Honeywell SS14 3EA Technical Help Desk 0845 604 2893 50051984 001 Rev A www homexpertbyhoneywell com 2010 Honeywell International Inc
4. 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 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 User Manual About your new thermostat The THR870CUK is an easy to use thermostat designed to maintain a comfortable environment when you are at home and reduce energy costs when you are away Features Energy saving design Automatically adjusts indoor temperature up to six times per day to maintain optimum comfort when you re at home and reduce costs during working hours when you are away Each day of the week can be programmed separately see pages 12 13 One touch comfort control Allows you to override programmed settings at any time by setting the indoor temperature manually see page 15 Day Off button Sets the system to your preferred Sunday program on any day of the week to maintain a comfortable environment when you stay home from work see page 16 Party button Temporarily overrides the normal program schedule for 1 to 23 hours to maintain a comfortable temperature while you are entertaining guests see page 17 Holiday button Maintai
5. in other rooms You can set the thermostat to compensate for this by adjusting the offset see page 29 To cancel the Holiday mode at any time press the HOLIDAY button again e Proportional band width If your heating system is oversized for your home you can compensate by increasing the temperature band width up to 3 C see page 29 NOTE This feature works only when the thermostat is in Auto or e Cycle rate and minimum boiler off time Adjusting these features can help your climate control system Manual mode see page 11 work more efficiently for increased comfort and economy See page 31 to find recommended settings for your system PAN CHN NON 3011 US US Th 18 19 Installation and Setup System installation Installation procedure 1 2 1 2 1 5 m o Disconnect electric power Choose thermostat location and install wall bracket Connect system wiring Activate batteries and attach thermostat cover Restore electric power Test the thermostat Q NOTE If you are not experienced in equipment installation we recommend that these procedures be done by a professional installer A DISCONNECT ELECTRIC POWER BEFORE INSTALLATION Can cause electrical shock or equipment damage 20 Wall bracket installation homexpert by Honeywell THR870CUK Programmable Thermostat Location guidelines e Install the wall bracket about 1 2 to 1 5 metres above the floor where the
6. press OK after changing any setting 28 homexpert by Honeywell THR870CUK Programmable Thermostat Installer setup functions Thermostat settings Factory default setting 8 OP Optimum start O Off 1 On See page 19 for description 9 tS Telephone override 0 Disabled 1 Telephone override enabled 0 12 tO Temperature offset No offset Options 3 to 3 C see page 19 for description 13 Pb Proportional band width DERE Options 1 5 to 3 C see page 19 for description 19 FS RESET TO FACTORY DEFAULT 0 No change 1 Select 1 to restore default settings All customised settings will be lost See page 27 to change these settings Always press OK after changing any setting 29 Installation and Setup homexpert by Honeywell THR870CUK Programmable Thermostat Installer setup functions System settings Customised settings for your system Enter Installer Setup see page 27 then press gt for access to system settings Factory default setting Function Description Setting Options Your heating system Changes required Setting Options 1 Ot Minimum boiler on time 1 minute Standard gas boiler None No change Options 1 to 5 minutes lt 30kW See page 31 for important information Fone Valve nine No change Gycles per hour CRH ny elee per hour Oil boiler System setting 1 Ot Set to 4 minutes Options 3 6 9 or 12 gt System setting 2 Cr Set to 3 CPH
7. User Manual homexpert by Honeywell a rai THR870CUK Programmable Thermostat 50051984 001 Rev A WARNING This product must be correctly installed and configured to work properly see pages 20 31 If you are not experienced in wiring electrical equipment we recommend professional installation to avoid possible personal injury or equipment damage TIP After installation see the QUICK START GUIDE on page 7 to customise and begin using your new thermostat right away CE Copyright 2010 Honeywell International Inc homexpert by Honeywell is a trademark of Honeywell International Inc All rights reserved homexpert by Honeywell THR870CUK Programmable Thermostat About your new thermostat What is a programmable thermostat 4 5 FOALUINES iat ccandeadessuariedehedsnesussadastniinedenssnd 6 QUICK START GUIDE ccccccccceeteees 7 Quick reference to controls 8 Date time settings 0 cceeeeeeeeeeeeeeees 9 Operation and programming Heating and cooling control Operating MOdES ceeeeeeeeteeeeeeeee Cost saving program schedules To adjust program schedules To add or remove program time periods Special functions Temporary schedule overrides 00 15 Day Off mode Party mode Holiday mode is Advanced features 19 Installation and setup System installation s assassinio 20 Wall bracket installation cccccccceeeeeees 21 Syster
8. WINING suss iuiaissii iais iiai 22 24 BatterieS ANd COVEY riisisscsusissrriiiisscss 25 SYSISM TOSt s icdsrceiedene decide onsiedenedvatanes 26 Installer SOtUP sisi eteienencciecvn A 27 31 Appendix In case Of difficulty 0 ee ceeeeeeeeeeeeeee Warranty information is Disposal and recycling NOTE This symbol will flash on the screen when battery power is low Remove cover as shown on page 24 and replace batteries with two fresh AA alkaline batteries User Manual What is a programmable room thermostat an explanation 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 this set temperature has been reached approved by Plain English Campaign 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 e
9. ate any unwanted time periods 2 through 6 if you require fewer than six per day 1 Press the lt or gt buttons repeatedly to select a time period or press the DAY button to select a different day 2 Press and hold the button for at least two seconds to remove the selected time period The temperature will remain at the level set for the previous time period until the following period begins To restore a disabled time period follow the procedure above to select the disabled period then press and hold the button for at least two seconds to restore it 14 homexpert by Honeywell THR870CUK Programmable Thermostat Temporary schedule overrides Current temperature When idle the thermostat displays the current room temperature You 3 can press the button at any time to see the target temperature the thermostat is trying to maintain 12 34 Eas Press the A or W buttons to change the temperature temporarily ROOM TEMP In Auto mode the thermostat will maintain the temperature you AUTO y set until the next program time period begins It will then revert to the level programmed for that time period To maintain a constant temperature for longer periods of time switch to Manual mode see page 11 TARGET TEMP NOTE See also temporary program overrides for holidays parties or AUTO A days when you stay home from work see pages 16 18 TARGET TEMP AUTO H 15 Special Functions
10. e page 25 Press to change program schedules see page 13 OK button Press to change temperature see page 15 Press to check target temperature see page 15 Operating modes see page 11 Automatic Manual Off Remove cover to use controls homexpert by Honeywell THR870CUK Programmable Thermostat Date time settings Day Month Year DH aen Pe SET THE GAY x E BAY OKP L 30 7 AO 5 THE MONTH Press the DAY button to set the date and 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 On completion the screen will display Changes saved Date and time should not need to be changed if set properly during initial installation see page 24 NOTE To adjust only the time press the or button It is not necessary to press the DAY button Operation and Programming homexpert by Honeywell THR870CUK Programmable Thermostat Heating or cooling control Operating modes auto manual off Press and hold both buttons for 5 seconds The thermostat is pre set to control your heating system If installed Auto Program controls temperature Press the mode buttons to select how the thermostat operates and set up correctly it can also be used to control your cooling system AUTO Auto In this mode the thermostat follows a program schedule to maintain a comfortable temperature wh
11. e remedies cannot resolve the problem the thermostat may have to be moved Make sure it is not installed near sources of hot or cold air radiators windows heating or cooling ducts 32 homexpert by Honeywell THR870CUK Programmable Thermostat 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 purchase 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 Please retain these instructions for future reference 2010 Honeywell International Inc 33 Appendix Disposal and recycling Disposal
12. eier Press to change setting See tables on pages 28 31 for complete list of functions and settings Installer settings allow you to customise how your system works Check the tables on pages 28 31 to see if any settings need to be changed To change installer settings 1 2 o Press the thermostat OFF button Press and hold the i lt and gt buttons until the screen changes Press the or buttons to scroll through functions quickly until you find one you want to change Press the A or W buttons to change any setting then press OK to save the new setting To exit installer setup press any MODE button Auto anual or Off 27 Installation and Setup Installer setup functions Thermostat settings Factory default setting 1 CL Clock format 24 24 hour time format 12 AM PM 12 hour time format 2 rP Reset program schedule 0 Schedule customised by user 1 Reset schedule to factory default see page 12 3 tC Summer winter time change 0 No change 1 Automatically switch to from daylight savings time 4 LA Display screen language Default language varies by location of purchase Press the A or Y buttons to select an alternate language 5 bL Screen backlight 0 Off 1 Screen lit when button is pressed 6 uL Maximum temperature allowed 35 C Options 21 to 35 C TUE Minimum temperature allowed DOs Options 5 to 21 C See page 27 to change these settings Always
13. en you are home and reduce energy costs while you are away see pages 12 13 To switch between heating and cooling press and hold the A and Y buttons until the screen changes mAN Manual This mode turns off the program schedule to maintain a constant temperature Press the A or Y Manual Press A to set temperature buttons to set the temperature you want The temperature ay will remain at the level you set until you change it or until NOTE Program schedules for heating and cooling must be set THU 30 12 10 Q separately see page 13 MAN Ce you press AUTO to resume the program schedule i Q NOTE The thermostat will not switch to cooling control unless you enable this feature see page 30 i M OFF O Off When the thermostat is off the heating system runs only as needed to maintain a minimum temperature to protect your home This level is set at 5 C but you can change it if necessary see page 28 NOTE You can press any of these buttons Auto Manual or Off to cancel any programming task and exit without saving changes 10 11 Operation and Programming Default program schedules This thermostat is pre set to maintain a comfortable temperature when you are at home and energy saving levels when you are away or asleep The default program schedules are shown below To change them see pages 13 18 wondayFiday renar 2 a e J e 6 saturday sundey 1 2
14. f in Auto mode To cancel the Party mode at any time press the PARTY button again NOTE This feature works only when the thermostat is in Auto mode see page 11 NOTE This feature works only when the thermostat is in Auto or Manual mode see page 11 TEMP OKP 16 17 Special Functions homexpert by Honeywell THR870CUK Programmable Thermostat Temporary schedule overrides Holida Advanced features e Optimum Start This is an energy efficient feature that adjusts the start time of your heating system For The Holiday feature maintains a constant energy saving temperature example on cold days your heating system will start earlier to ensure that your home is warm when you HIE youi re away toran extended time Up t099 days wake in the morning On warmer days heating will begin later to save energy costs See page 29 to turn 1 Press the HOLIDAY button off this feature 2 Press or to select the number of days you will be away up to e Summer winter time change The thermostat automatically changes the clock time to correspond with 99 days then press OK to save changes to and from daylight savings time See page 28 to turn off this feature 3 Press the A or W buttons to set the temperature during your e Temperature offset In some cases the thermostat must be installed in a location that does not absence then press OK to save and exit accurately control temperature for optimum comfort
15. homexpert by Honeywell THR870CUK Programmable Thermostat Temporary schedule overrides Day Off Temporary schedule overrides Part gt The Party feature temporarily overrides the program schedule to maintain a comfortable temperature while you entertain guests You al k can also use it to set an energy saving temperature level if you will be away from home for several hours 1 Press the PARTY button days when you stay home The Sunday schedule should maintain a comfortable temperature all day long see page 12 1 Press the DAY OFF button In Day Off mode the system runs the Sunday program schedule on g GF Gl n wn f L aN no PARTY DURAT 2 Press or to select the number of days you will stay home up to 99 days then press OK to save 2 Press or to select the number of hours 1 to 23 hours then Set number of hours then press OK press OK to save After the last day off the temperature will resume the normal GD aaa ET gt program schedule To cancel the Day Off feature at any time press Tai af EAN 3 Press the A or W buttons to set the temporary temperature then the DAY OFF button again The day off symbol will disappear and ee press OK to save and exit the system will resume normal operation OJ ue clis fake When the timer expires the temperature will revert to the previous PARTY DURATION J p 3 level Set manually or by the program schedule i
16. ns a cost saving temperature level for up to 99 days while you are away then resumes normal operation when you return See page 18 Summer Winter time change Automatically adjusts the clock for standard time or daylight savings time Optimum Start Automatically turns on heating system as early as needed so indoor temperature reaches the level you want at the time you set homexpert by Honeywell THR870CUK Programmable Thermostat QUICK START GUIDE Your new thermostat is pre programmed and ready to go Just check the steps below and change settings if needed 1 Install and set up thermostat if this has not been done by a professional installer eee eee eeeeeeeeereeneees See pages 20 31 Select heating default Or cooling MOE eee eeeeeeceeeeeceeeeeeneeeteeteeeeeeaeeeseaaeeeteaaeessaeeeensaeeeseaaees See page 10 Customise heating and cooling program settings if NECESSALY ec ene tee tereeniees See page 13 a Display screen options To change the date time or display screen language see pages 9 and 28 User Manual Quick reference Press to set time Current Current see page 9 time day date Press to set day date see page 9 Press to copy a daily program schedule see page 13 Day Off button see page 16 Party button Heating system Low battery Currentroom Status text is on warning 4 temperature see page 17 Holiday button see page 18 Battery compartment se
17. rst time you do this you will be 230V U 230V AIBIC rompted to set the date time and preferred screen language 50 60He 50 60Hz oR p p O p d guag e L os a M WE NOTE This symbol will flash on the screen when battery N power is low Remove cover as shown at left and replace 3 i batteries with two fresh AA alkaline batteries Remove cover and discard plastic tab inside to activate batteries Place cover on thermostat and Ps press until it snaps in place Thermal actuator Electric actuator THR870C ev 230V U 24 230V U 50 60Hz 50 60Hz lt ga E on pee SH eo N N 4 J S versions only 24 25 Installation and Setup Press OFF check heating TARGET TEMP After installation you should check to make sure the system is working properly 1 Press the thermostat OFF button then verify that the heating system is on 2 Press the thermostat MAN button then press the A button to raise target temperature to maximum 35 C If the system is set up properly the heating symbol should appear on the thermostat display and the heating system should begin running after a short delay 3 To stop the test press AUTO to run the program schedule or MAN to reset the temperature manually 26 Installer setup homexpert by Honeywell THR870CUK Programmable Thermostat OFF Press and hold to enter installer mode 1 Press to scroll through functions Ce REL Eo 9 cock s
18. screen display is easily visible e Do not install near sources of hot or cold air radiators windows heating or cooling ducts e Install at least 1 metre away from other electronic devices TV sound system PC etc Installation and Setup homexpert by Honeywell THR870CUK Programmable Thermostat onnect system wiring ELECE 0 t t W d 4 0 2 5mme Connect wiring from your heating or cooling Combi Boiler Basic Boiler equipment to the thermostat as shown at left See wiring diagrams on pages 23 24 for details 24 230V U 6mm max A 1 Make sure electrical power is off 50 60Hz 2 Strip insulation to expose about 6 mm of bare wire 3 Use a screwdriver to loosen terminal screw insert wire into slot then tighten screw 4 Attach cover then restore electrical power Pump only Q NOTE All wiring must comply with IEE regulations Keep AC mains supply load cables 24 230V separate from equipment wiring Refer to boiler 50 60Hz allele instructions for information L eo about wiring connections m 5 22 23 Installation and Setup homexpert by Honeywell THR870CUK Programmable Thermostat Wiring diagrams Activate batteries and attach thermostat cover Zone valve Zone valve THR870C Remove battery compartment cover and discard the plastic tab TET inside to activate the batteries The fi
19. xample the size of 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 temperature 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 homexpert by Honeywell THR870CUK Programmable Thermostat 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 choose 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

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